WO2023040904A1 - 防抖驱动组件和摄像模组及防抖方法、用于驱动镜头的驱动组件及其组装方法和摄像模组 - Google Patents
防抖驱动组件和摄像模组及防抖方法、用于驱动镜头的驱动组件及其组装方法和摄像模组 Download PDFInfo
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- WO2023040904A1 WO2023040904A1 PCT/CN2022/118779 CN2022118779W WO2023040904A1 WO 2023040904 A1 WO2023040904 A1 WO 2023040904A1 CN 2022118779 W CN2022118779 W CN 2022118779W WO 2023040904 A1 WO2023040904 A1 WO 2023040904A1
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- the present application relates to the field of camera modules, and in particular to an anti-shake drive assembly and a camera module, wherein the anti-shake drive assembly can enable the optical movement of the camera module in multiple directions through one anti-shake drive unit. anti-shake.
- the present application also relates to an anti-shake method for a camera module, which uses a first piezoelectric actuator and a second piezoelectric actuator with special driving characteristics and cooperates with an anti-shake movable part to realize the camera module Optical image stabilization in multiple directions.
- the present application also relates to a driving assembly for driving the lens, an assembly method for the driving assembly for driving the lens, and a camera module.
- existing driving elements for driving optical components are electromagnetic motors, such as voice coil motors (Voice Coil Motor: VCM), shape memory alloy actuators (Shape of Memory Alloy Actuator: SMA) and the like.
- voice coil motors Voice Coil Motor: VCM
- shape memory alloy actuators Shape of Memory Alloy Actuator: SMA
- existing voice coil motors and shape memory alloy drivers are only suitable for driving optical components weighing less than 100mg, that is, if the weight of optical components exceeds 100mg, the existing drivers will not be able to meet the application requirements of camera modules .
- the existing voice coil motor is equipped with a coil and a magnet inside.
- the internal magnetic field will affect each other, resulting in displacement or vibration of the magnet, reducing the stability of its drive control. .
- terminal devices such as mobile phones and tablets. They not only require effects such as background blur and night shooting, but also demand telephoto. A terminal device that clearly captures pictures at different distances.
- an optical zoom lens is usually added to the camera module to form an optical zoom module.
- the optical zoom module changes the focal length of the lens by changing the distance between the lenses of the optical zoom lens to achieve the purpose of zooming. It can clearly shoot distant objects at different distances, and the imaging quality of the resulting image is also relatively high. higher. Zooming here refers to changing the focal length in order to shoot scenes at different distances.
- the parameters and specifications of the optical zoom module continue to increase, the size and weight of the lens continue to increase, and the thrust requirements for the motor that drives the lens to move are also getting higher and higher, so the volume of the motor is also increasing. Increase.
- the existing electromagnetic motor solution has a short stroke, a large volume, and electromagnetic interference, which makes it difficult to meet the needs of optical zoom for lens movement.
- an optical zoom lens is usually added to the camera module to form an optical zoom module.
- the optical zoom module changes the focal length of the lens by changing the distance between the lenses of the optical zoom lens to achieve the purpose of zooming. It can clearly shoot distant objects at different distances, and the imaging quality of the resulting image is also relatively high. higher. Zooming here refers to changing the focal length in order to shoot scenes at different distances.
- Existing drive motors for driving the optical variable camera module use Voice Coil Motor (Voice Coil Motor: VCM), Shape Memory Alloy Actuator (Shape of Memory Alloy Actuator: SMA), etc.
- VCM Voice Coil Motor
- SMA Shape of Memory Alloy Actuator
- With the improvement of the imaging performance requirements of the camera module higher requirements are put forward for each component of the camera module, especially the zoom component.
- the component design of the module also increases the size of the component, which further increases the weight of the component.
- conventional electromagnetic motors can no longer provide sufficient driving force.
- existing voice coil motor drivers can only drive optical lenses weighing less than 100 mg, while memory alloy motors require a larger travel space to be set.
- an anti-shake driving component and a camera module are proposed.
- An advantage of the present application is to provide an anti-shake drive assembly and a camera module, wherein the camera module uses a novel piezoelectric actuator as a drive element to not only provide a sufficient driving force, but also to The drive performance with higher precision and longer stroke is provided to meet the requirements for optical performance adjustment of the camera module, for example, the requirements for optical anti-shake.
- Another advantage of the present application is to provide an anti-shake drive assembly and a camera module, wherein the piezoelectric actuator is arranged in the camera module using a reasonable layout scheme to meet the needs of the camera module. Structural and dimensional requirements.
- Another advantage of the present application is to provide an anti-shake driving assembly and a camera module, wherein the anti-shake driving assembly is only equipped with one anti-shake movable part to realize the anti-shake of the camera module in the XOY plane , that is, the anti-shake driving assembly has a relatively simplified driving configuration.
- an anti-shake driving component which includes:
- An anti-shake movable part wherein a photosensitive component including a photosensitive chip is adapted to be mounted on the anti-shake movable part in a linked manner;
- An anti-shake driving part disposed between the anti-shake fixed part and the anti-shake movable part, the anti-shake driving part includes a first piezoelectric actuator frictionally coupled to the anti-shake movable part device and a second piezoelectric actuator;
- first piezoelectric actuator and the second piezoelectric actuator are arranged on opposite sides of the photosensitive assembly parallel to each other, and the first piezoelectric actuator and the second piezoelectric actuator
- the piezoelectric actuator is suitable for actuating the anti-shake movable part and the photosensitive assembly to move in the XOY plane set by the X axis and the Y axis or around the Z axis perpendicular to the X axis and the Y axis.
- the axis rotates in the XOY plane.
- the first piezoelectric actuator and the second piezoelectric actuator are symmetrical with respect to the photosensitive assembly with the X-axis or the Y-axis as a symmetric axis Arranged on opposite sides of the photosensitive assembly.
- the first piezoelectric actuator and the second piezoelectric actuator are traveling wave piezoelectric actuators, wherein the first piezoelectric actuator
- the device includes a first piezoelectric ceramic plate and a first friction driving part protruding from the first piezoelectric ceramic plate, and the first piezoelectric ceramic plate is adapted to be deformed after being electrically driven to drive the first friction The driving part performs unidirectional swinging and reciprocating motion;
- the second piezoelectric actuator includes a second piezoelectric ceramic plate and a second friction driving part protruding from the second piezoelectric ceramic plate, and the second The piezoelectric ceramic plate is adapted to be deformed after being electrically driven to drive the second friction driving part to perform unidirectional swinging and reciprocating motion.
- the first piezoelectric actuator is adapted to deform along the direction set by the X-axis to actuate the anti-shake movable part and the photosensitive assembly along the The X-axis moves in the direction set
- the second piezoelectric actuator is adapted to deform along the X-axis set direction to actuate the anti-shake movable part and the photosensitive component move along the direction set by the X-axis, so that the anti-shake movable part and the photosensitive component are moved along the moving in the direction set by the X-axis;
- the first piezoelectric actuator is adapted to deform along the direction set by the Y-axis to actuate the anti-shake movable part and the photosensitive assembly along the direction set by the Y-axis moving
- the second piezoelectric actuator is adapted to deform along the direction set by the Y-axis to actuate the anti-shake movable part and the photosensitive assembly set along the Y-axis to move in the direction set by the first piezoelectric actuator and the second piezoelectric actuator to actuate the anti-shake movable part and the photosensitive assembly along the direction set by the Y axis to move;
- the first piezoelectric actuator is adapted to deform along the first direction set along the X-axis to actuate the anti-shake movable part and the photosensitive assembly along the X-axis. to move in the first direction of the X-axis
- the second piezoelectric actuator is adapted to deform along the second direction opposite to the first direction set by the X-axis to actuate the anti-shake movable
- the part and the photosensitive assembly move along the second direction set by the X-axis, so that the photosensitive assembly is actuated by the first piezoelectric actuator and the second piezoelectric actuator to rotate around the The Z axis rotates in the XOY plane;
- the first piezoelectric actuator is adapted to deform along a first direction set along the Y-axis to actuate the anti-shake movable part and the photosensitive assembly along the Y-axis. to move in the first direction of the Y-axis
- the second piezoelectric actuator is adapted to deform along the second direction opposite to the first direction set by the Y-axis to actuate the anti-shake movable part and the photosensitive assembly move along the second direction set by the Y-axis, so that the photosensitive assembly is actuated by the first piezoelectric actuator and the second piezoelectric actuator to rotate around the The Z axis rotates within the XOY plane.
- the first piezoelectric actuator and the second piezoelectric actuator have a rectangular structure with two opposite long sides along the length direction and Two opposite short sides in the width direction.
- the length direction of the first piezoelectric actuator and the second piezoelectric actuator is the X-axis direction
- the first piezoelectric actuator and the The short-side direction of the second piezoelectric actuator is the Y-axis direction.
- the length direction of the first piezoelectric actuator and the second piezoelectric actuator is the Y-axis direction
- the first piezoelectric actuator and the The short-side direction of the second piezoelectric actuator is the X-axis direction
- the anti-shake movable part is smoothly supported by the first friction driving part of the first piezoelectric actuator and the first friction driving part of the second piezoelectric actuator. On the second friction drive part.
- the first piezoelectric ceramic plate is arranged on the anti-shake fixing part, the first friction driving part is frictionally coupled to the anti-shake movable part, the The second piezoelectric ceramic plate is disposed on the anti-shake fixed part, and the second friction driving part is frictionally coupled to the anti-shake movable part.
- the first piezoelectric actuator and the second piezoelectric actuator have the same height dimension.
- the height dimension of the first piezoelectric actuator and the second piezoelectric actuator is 0.7mm-0.9mm.
- the anti-shake fixing part has a receiving cavity, and the anti-shaking movable part is suspended in the receiving cavity of the anti-shaking fixing part.
- the anti-shake fixing part includes a base and an upper cover engaged with the base, and the accommodation cavity is formed between the upper cover and the base.
- the anti-shake drive assembly there is a gap between the anti-shake movable part and the base, and there is a gap between the anti-shake movable part and the upper cover. In this way, the The anti-shake movable part is suspended in the cavity of the anti-shake fixed part.
- the anti-shake movable part includes a carrier body and a carrier extension arm extending outward from the carrier body, wherein the first friction of the first piezoelectric actuator The drive portion and the second friction drive portion of the second piezoelectric actuator are frictionally coupled to the lower surface of the carrier extension arm.
- the carrier body has a seating groove lower than the carrier extension arm, wherein the photosensitive component is suitable to be installed in the seating groove.
- the anti-shake driving assembly there is an accommodation space between the carrier extension arm and the base, and the first piezoelectric actuator and the second piezoelectric actuator are accommodated in the within the storage space described above.
- the anti-shake movable part further includes a friction plate formed on the lower surface of the carrier extension arm, the first friction driving part of the first piezoelectric actuator and The second friction driving portion of the second piezoelectric actuator is frictionally coupled to the friction plate.
- the anti-shake drive assembly further includes a drive substrate disposed between the anti-shake movable part and the base, the drive substrate includes at least one conductive terminal and The connecting end extending outward from the conductive end, the first piezoelectric actuator and the second piezoelectric actuator are electrically connected to the at least one electrical connecting end.
- the at least one conductive end includes a first conductive end and a second conductive end
- the first piezoelectric actuator is electrically connected to the first conductive end
- the first conductive end Two piezoelectric actuators are electrically connected to the second conductive end.
- the anti-shake movable part has a slot formed on the side wall of the carrier body, and the slot is configured to allow the circuit board of the photosensitive assembly to pass through the opening.
- the groove protrudes from the seating groove.
- the base has an opening formed on a sidewall thereof, wherein the connecting end extends outward from the at least one conductive end and passes through the opening.
- the opening and the slot have a height difference.
- the anti-shake drive assembly further includes a pre-pressure device provided between the anti-shake driving part and the anti-shake fixing part, so as to provide The pre-pressure forces the anti-shake driving part to be frictionally coupled to the anti-shake movable part.
- the pre-pressing device includes a first elastic element arranged between the base and the first piezoelectric ceramic plate of the first piezoelectric actuator, so as to pass through the The elastic force of the first elastic element itself generates the pre-pressure to force the first friction driving part of the first piezoelectric actuator to touch the friction plate, so that the first piezoelectric actuator
- the first friction driving part of the actuator is frictionally coupled to the friction plate;
- the pre-pressure device further includes a first piezoelectric ceramic plate disposed between the base and the second piezoelectric ceramic plate of the second piezoelectric actuator.
- the thickness of the first elastic element and the second elastic element is 10um to 50um.
- the anti-shake drive assembly further includes a guide device arranged between the upper surface of the carrier extension arm and the upper cover, the guide device is suitable for guiding The anti-shake movable part moves in the XOY plane set by the X axis and the Y axis.
- a camera module which includes:
- a photosensitive component including a circuit board and a photosensitive component electrically connected to the circuit board, wherein the optical lens is held on the photosensitive path of the photosensitive component;
- An advantage of the present application is to provide an anti-shake drive assembly and a camera module, wherein the camera module uses a novel piezoelectric actuator as a drive element to not only provide a sufficient driving force, but also to The drive performance with higher precision and longer stroke is provided to meet the requirements for optical performance adjustment of the camera module, for example, the requirements for optical anti-shake.
- Another advantage of the present application is to provide an anti-shake drive assembly and a camera module, wherein the piezoelectric actuator is arranged in the camera module using a reasonable layout scheme to meet the needs of the camera module. Structural and dimensional requirements.
- Another advantage of the present application is to provide an anti-shake driving assembly and a camera module, wherein the anti-shake driving assembly is only equipped with one anti-shake movable part to realize the anti-shake of the camera module in the XOY plane , that is, the anti-shake driving assembly has a relatively simplified driving configuration.
- Another advantage of the present application is to provide an anti-shake drive assembly and a camera module, wherein the guide device and the anti-shake drive part of the anti-shake drive assembly are relatively arranged on the side of the anti-shake movable part. Both sides and the guide device, the anti-shake movable part and the anti-shake driving part are clamped and arranged in the accommodation cavity formed by the anti-shake fixed part, so that the guide device In addition to guiding the movement of the anti-shake movable part, the guide element also serves to provide a pre-pressure to keep the anti-shake driving part frictionally coupled to the anti-shake movable part.
- an anti-shake driving component which includes:
- the anti-shake movable part is suspended in the storage cavity of the anti-shake fixed part, so that the storage cavity is divided into an upper part and a lower part by the anti-shake movable part, wherein the anti-shake can be
- the moving part is suitable for installing photosensitive components on it;
- An anti-shake driving part disposed at the lower part of the housing cavity, wherein the anti-shake driving part includes a first piezoelectric actuator and a second piezoelectric actuator frictionally coupled to the anti-shake movable part
- the first piezoelectric actuator and the second piezoelectric actuator are suitable for actuating the anti-shake movable part to move in the XOY plane set by the X axis and the Y axis or around the vertical a Z-axis about the X-axis and the Y-axis rotates in the XOY plane;
- the anti-shake fixing part includes a base and an upper cover that is engaged with the base, and the upper part of the storage cavity is formed on the upper cover and the anti-shake movable Between the parts, the lower part of the accommodation cavity is formed between the base and the anti-shake movable part.
- the anti-shake drive assembly there is a gap between the anti-shake movable part and the base, and there is a gap between the anti-shake movable part and the upper cover. In this way, the The anti-shake movable part is suspended in the cavity of the anti-shake fixed part.
- the anti-shake movable part is sandwiched smoothly between the first piezoelectric actuator and the guide element and the second piezoelectric actuator between the device and the guide element.
- the anti-shake movable part includes a carrier body and a carrier extension arm extending outward from the carrier body, wherein the guide element is clamped to the upper cover Between the lower surface of the carrier extension arm and the upper surface of the carrier extension arm, the first piezoelectric actuator and the second piezoelectric actuator are frictionally coupled to the lower surface of the carrier extension arm.
- the anti-shake movable part further includes a friction plate formed on the lower surface of the carrier extension arm, the first piezoelectric actuator and the second piezoelectric actuator An actuator is frictionally coupled to the friction plate.
- the anti-shake drive assembly further includes a first guide groove recessedly formed on the upper surface of the carrier extension arm, and the guide element is accommodated in the first guide groove.
- the guide element and the first guide groove form a guide device for guiding the movement of the anti-shake movable part and the photosensitive assembly, wherein at least A portion protrudes from the groove and abuts against the lower surface of the upper cover, in such a way that the guide element is clamped between the lower surface of the upper cover and the upper surface of the carrier extension arm .
- the guide element is a ball.
- the guide element is a slider.
- the first guide groove extends along the direction set by the X-axis
- the guide device further includes a recess formed on the lower surface of the upper cover.
- a second guide groove, the second guide groove extends along the direction set by the Y-axis.
- the first guide groove extends along the direction set by the Y-axis
- the guide device further includes a recess formed on the lower surface of the upper cover.
- a second guide groove, the second guide groove extends along the direction set by the X-axis.
- the first guide section and the second guide groove are oppositely arranged and cross each other.
- the first piezoelectric actuator and the second piezoelectric actuator have the same height dimension.
- the height dimension of the first piezoelectric actuator and the second piezoelectric actuator is 0.7mm-0.9mm.
- the first piezoelectric actuator and the second piezoelectric actuator are traveling wave piezoelectric actuators, wherein the first piezoelectric actuator
- the device includes a first piezoelectric ceramic plate and a first friction driving part protruding from the first piezoelectric ceramic plate, and the first piezoelectric ceramic plate is adapted to be deformed after being electrically driven to drive the first friction The driving part performs unidirectional swinging and reciprocating motion;
- the second piezoelectric actuator includes a second piezoelectric ceramic plate and a second friction driving part protruding from the second piezoelectric ceramic plate, and the second The piezoelectric ceramic plate is adapted to be deformed after being electrically driven to drive the second friction driving part to perform unidirectional swinging and reciprocating motion.
- the first piezoelectric ceramic plate is arranged on the anti-shake fixing part, the first friction driving part is frictionally coupled to the anti-shake movable part, the The second piezoelectric ceramic plate is disposed on the anti-shake fixed part, and the second friction driving part is frictionally coupled to the anti-shake movable part.
- the first piezoelectric actuator and the second piezoelectric actuator are arranged in parallel on opposite sides of the photosensitive assembly.
- the first piezoelectric actuator and the second piezoelectric actuator are symmetrical with respect to the photosensitive assembly with the X-axis or the Y-axis as the symmetrical axis Arranged on opposite sides of the photosensitive component.
- the first piezoelectric actuator is adapted to deform along the direction set by the X-axis to actuate the anti-shake movable part and the photosensitive assembly along the The X-axis moves in the direction set
- the second piezoelectric actuator is adapted to deform along the X-axis set direction to actuate the anti-shake movable part and the photosensitive component move along the direction set by the X-axis, so that the anti-shake movable part and the photosensitive component are moved along the moving in the direction set by the X-axis;
- the first piezoelectric actuator is adapted to deform along the direction set by the Y-axis to actuate the anti-shake movable part and the photosensitive assembly along the direction set by the Y-axis moving
- the second piezoelectric actuator is adapted to deform along the direction set by the Y-axis to actuate the anti-shake movable part and the photosensitive assembly set along the Y-axis to move in the direction set by the first piezoelectric actuator and the second piezoelectric actuator to actuate the anti-shake movable part and the photosensitive assembly along the direction set by the Y axis to move;
- the first piezoelectric actuator is adapted to deform along the first direction set along the X-axis to actuate the anti-shake movable part and the photosensitive assembly along the X-axis. to move in the first direction of the X-axis
- the second piezoelectric actuator is adapted to deform along the second direction opposite to the first direction set by the X-axis to actuate the anti-shake movable
- the part and the photosensitive assembly move along the second direction set by the X-axis, so that the photosensitive assembly is actuated by the first piezoelectric actuator and the second piezoelectric actuator to rotate around the The Z axis rotates in the XOY plane;
- the first piezoelectric actuator is adapted to deform along a first direction set along the Y-axis to actuate the anti-shake movable part and the photosensitive assembly along the Y-axis. to move in the first direction of the Y-axis
- the second piezoelectric actuator is adapted to deform along the second direction opposite to the first direction set by the Y-axis to actuate the anti-shake movable part and the photosensitive assembly move along the second direction set by the Y-axis, so that the photosensitive assembly is actuated by the first piezoelectric actuator and the second piezoelectric actuator to rotate around the The Z axis rotates within the XOY plane.
- the anti-shake drive assembly further includes a drive substrate disposed between the anti-shake movable part and the base, the drive substrate includes at least one conductive terminal and The connecting end extending outward from the conductive end, the first piezoelectric actuator and the second piezoelectric actuator are electrically connected to the at least one electrical connecting end.
- the at least one conductive end includes a first conductive end and a second conductive end
- the first piezoelectric actuator is electrically connected to the first conductive end
- the first conductive end Two piezoelectric actuators are electrically connected to the second conductive end.
- the anti-shake movable part has a slot formed on the side wall of the carrier body, and the slot is configured to allow the circuit board of the photosensitive assembly to pass through the opening.
- the groove protrudes from the seating groove.
- the base has an opening formed on a sidewall thereof, wherein the at least one conductive end of the connecting terminal extends outward and passes through the opening.
- the opening and the slot have a height difference.
- the anti-shake drive assembly further includes a pre-pressure device provided between the anti-shake driving part and the anti-shake fixing part, so as to provide The pre-pressure forces the anti-shake driving part to be frictionally coupled to the anti-shake movable part.
- the pre-pressing device includes a first elastic element arranged between the base and the first piezoelectric ceramic plate of the first piezoelectric actuator, so as to pass through the The elastic force of the first elastic element itself generates the pre-pressure to force the first friction driving part of the first piezoelectric actuator to touch the friction plate, so that the first piezoelectric actuator
- the first friction driving part of the actuator is frictionally coupled to the friction plate;
- the pre-pressure device further includes a first piezoelectric ceramic plate disposed between the base and the second piezoelectric ceramic plate of the second piezoelectric actuator.
- the thickness of the first elastic element and the second elastic element is 10um to 50um.
- a camera module which includes:
- a photosensitive component including a circuit board and a photosensitive component electrically connected to the circuit board, wherein the optical lens is held on the photosensitive path of the photosensitive component;
- An advantage of the present application is to provide an anti-shake drive assembly and a camera module, wherein the camera module uses a novel piezoelectric actuator as a drive element to not only provide a sufficient driving force, but also to The drive performance with higher precision and longer stroke is provided to meet the requirements for optical performance adjustment of the camera module, for example, the requirements for optical anti-shake.
- Another advantage of the present application is to provide an anti-shake drive assembly and a camera module, wherein the piezoelectric actuator is arranged in the camera module using a reasonable layout scheme to meet the needs of the camera module. Structural and dimensional requirements.
- Another advantage of the present application is to provide an anti-shake driving assembly and a camera module, wherein the anti-shake driving assembly is only equipped with one anti-shake movable part to realize the anti-shake of the camera module in the XOY plane , that is, the anti-shake driving assembly has a relatively simplified driving configuration.
- the anti-shake drive assembly includes an anti-shake fixed part, an anti-shake drive part, an anti-shake movable part, a preloading device, a guide A guiding device and a driving substrate, wherein the anti-shake driving part, the driving substrate and the preloading device are arranged on one side of the anti-shaking movable part, and the guiding device is arranged on the anti-shaking movable part.
- the other side opposite to the anti-shake movable part wherein when the anti-shake driving part is driven, the frictional force between the anti-shake driving part and the anti-shake movable part is greater than that of the guiding device. Encountered frictional force, in such a way that the anti-shake driving part can drive the anti-shake movable part, and the guide device guides the movement of the anti-shake movable part The movement of the anti-shake movable part will not be interfered.
- an anti-shake driving component which includes:
- the anti-shake movable part is suspended in the storage chamber of the anti-shake fixed part, wherein the anti-shake movable part is suitable for installing a photosensitive component thereon, and the storage cavity is covered by the anti-shake
- the movable part is the first part and the second part;
- the anti-shake driving part and the pre-pressing device arranged in the first part of the housing cavity, wherein the anti-shaking driving part includes a first anti-shaking movable part frictionally coupled to the anti-shaking movable part through the pre-pressing device
- a piezoelectric actuator and a second piezoelectric actuator, the first piezoelectric actuator and the second piezoelectric actuator are suitable for actuating the anti-shake movable part in the X-axis and Y-axis moving within a set XOY plane or rotating within said XOY plane about a Z axis perpendicular to said X axis and said Y axis;
- a guide provided in the second part of the housing cavity for guiding the anti-shake movable part to move along the direction set by the X-axis and/or the direction set by the Y-axis lead device;
- the friction force between the anti-shake driving part and the anti-shake movable part is greater than the friction force encountered by the guiding device at the second part.
- the anti-shake fixing part includes a base and an upper cover fastened with the base, the receiving cavity is formed between the upper cover and the base, the The first part is formed between the upper cover and the anti-shake movable part, and the second part is formed between the base and the anti-shake movable part.
- the anti-shake driving part and the pre-pressure device are interposed between the anti-shake movable part and the base, and the guide device is clamped is fixedly disposed between the upper cover and the anti-shake movable part, wherein when the first piezoelectric actuator and the second piezoelectric actuator are driven, the first piezoelectric actuator The friction force between the electric actuator and the second piezoelectric actuator and the anti-shake movable part is greater than the friction force between the guide device and the upper cover.
- the pre-pressure device includes a first elastic element arranged between the base and the first piezoelectric actuator, so that the first elastic element itself The elastic force generates the pre-pressure to force the first piezoelectric actuator to interfere with the anti-shake movable part, in such a way that the first piezoelectric actuator is frictionally coupled to the anti-shake Movable part; the pre-pressure device further includes a second elastic element disposed between the base and the second piezoelectric ceramic plate of the second piezoelectric actuator, so that the second elastic element itself The pre-pressure generated by the elastic force forces the second piezoelectric actuator to interfere with the anti-shake movable part, so that the second piezoelectric actuator is frictionally coupled to the anti-shake movable part. Shake the movable part.
- the first elastic element and the second elastic element are formed by curing an adhesive.
- the thickness of the first elastic element and the second elastic element is 10um to 50um.
- the anti-shake movable part includes a carrier body, a carrier extension arm extending outward from the carrier body, and a friction plate formed on the lower surface of the carrier extension arm, wherein , the first piezoelectric actuator and the second piezoelectric actuator are frictionally coupled to the friction plate of the anti-shake movable part through the first elastic element and the second elastic element .
- the guide device includes a first guide groove recessedly formed on the upper surface of the carrier extension arm and a ball arranged in the first guide groove, wherein , at least a part of the ball protrudes from the first guide groove and collides with the lower surface of the upper cover, in such a way that the anti-shake movable part and the photosensitive assembly are captured by the first There is friction between the ball and the lower surface of the upper cover when the piezoelectric actuator and the second piezoelectric actuator are actuated.
- the first guide groove extends along the direction set by the X-axis
- the guide device further includes a recess formed on the lower surface of the upper cover.
- a second guide groove, the second guide groove extends along the direction set by the Y-axis.
- the first guide groove extends along the direction set by the Y-axis
- the guide device further includes a recess formed on the lower surface of the upper cover.
- a second guide groove, the second guide groove extends along the direction set by the X-axis.
- the first guide groove segment and the second guide groove segment are arranged opposite to each other and cross each other.
- the guide device includes a guide groove formed concavely on the upper surface of the carrier extension arm and a slider arranged in the guide groove, wherein the slider At least a part of the slider protrudes from the guide groove and is in contact with the lower surface of the upper cover. In this way, the slider is clamped between the lower surface of the upper cover and the upper surface of the carrier extension arm. between.
- the anti-shake movable part is supported smoothly on the first piezoelectric actuator and the second piezoelectric actuator.
- the first piezoelectric actuator and the second piezoelectric actuator have the same height dimension.
- the height dimension of the first piezoelectric actuator and the second piezoelectric actuator is 0.7mm-0.9mm.
- the first piezoelectric actuator and the second piezoelectric actuator are traveling wave piezoelectric actuators, wherein the first piezoelectric actuator
- the device includes a first piezoelectric ceramic plate and a first friction driving part protruding from the first piezoelectric ceramic plate, and the first piezoelectric ceramic plate is adapted to be deformed after being electrically driven to drive the first friction The driving part performs unidirectional swinging and reciprocating motion;
- the second piezoelectric actuator includes a second piezoelectric ceramic plate and a second friction driving part protruding from the second piezoelectric ceramic plate, and the second The piezoelectric ceramic plate is adapted to be deformed after being electrically driven to drive the second friction driving part to perform unidirectional swinging and reciprocating motion.
- the first piezoelectric ceramic plate is arranged on the anti-shake fixing part, the first friction driving part is frictionally coupled to the anti-shake movable part, the The second piezoelectric ceramic plate is disposed on the anti-shake fixed part, and the second friction driving part is frictionally coupled to the anti-shake movable part.
- the first piezoelectric actuator and the second piezoelectric actuator are arranged in parallel on opposite sides of the photosensitive assembly.
- the first piezoelectric actuator and the second piezoelectric actuator are symmetrical with respect to the photosensitive assembly with the X-axis or the Y-axis as the axis of symmetry Arranged on opposite sides of the photosensitive assembly.
- the first piezoelectric actuator is adapted to deform along the direction set by the X-axis to actuate the anti-shake movable part and the photosensitive assembly along the The X-axis moves in the direction set
- the second piezoelectric actuator is adapted to deform along the X-axis set direction to actuate the anti-shake movable part and the photosensitive component move along the direction set by the X-axis, so that the anti-shake movable part and the photosensitive component are moved along the moving in the direction set by the X-axis;
- the first piezoelectric actuator is adapted to deform along the direction set by the Y-axis to actuate the anti-shake movable part and the photosensitive assembly along the direction set by the Y-axis moving
- the second piezoelectric actuator is adapted to deform along the direction set by the Y-axis to actuate the anti-shake movable part and the photosensitive assembly set along the Y-axis to move in the direction set by the first piezoelectric actuator and the second piezoelectric actuator to actuate the anti-shake movable part and the photosensitive assembly along the direction set by the Y axis to move;
- the first piezoelectric actuator is adapted to deform along the first direction set along the X-axis to actuate the anti-shake movable part and the photosensitive assembly along the X-axis. to move in the first direction of the X-axis
- the second piezoelectric actuator is adapted to deform along the second direction opposite to the first direction set by the X-axis to actuate the anti-shake movable
- the part and the photosensitive assembly move along the second direction set by the X-axis, so that the photosensitive assembly is actuated by the first piezoelectric actuator and the second piezoelectric actuator to rotate around the The Z axis rotates in the XOY plane;
- the first piezoelectric actuator is adapted to deform along a first direction set along the Y-axis to actuate the anti-shake movable part and the photosensitive assembly along the Y-axis. to move in the first direction of the Y-axis
- the second piezoelectric actuator is adapted to deform along the second direction opposite to the first direction set by the Y-axis to actuate the anti-shake movable part and the photosensitive assembly move along the second direction set by the Y-axis, so that the photosensitive assembly is actuated by the first piezoelectric actuator and the second piezoelectric actuator to rotate around the The Z axis rotates within the XOY plane.
- the anti-shake drive assembly further includes a drive substrate disposed between the anti-shake movable part and the base, the drive substrate includes at least one conductive terminal and The connecting end extending outward from the conductive end, the first piezoelectric actuator and the second piezoelectric actuator are electrically connected to the at least one electrical connecting end.
- the at least one conductive end includes a first conductive end and a second conductive end
- the first piezoelectric actuator is electrically connected to the first conductive end
- the first conductive end Two piezoelectric actuators are electrically connected to the second conductive end.
- the anti-shake movable part has a slot formed on the side wall of the carrier body, and the slot is configured to allow the circuit board of the photosensitive assembly to pass through the opening.
- the groove protrudes from the seating groove.
- the base has an opening formed on a sidewall thereof, wherein the at least one conductive end of the connecting terminal extends outward and passes through the opening.
- the opening and the slot have a height difference.
- a camera module which includes:
- a photosensitive component including a circuit board and a photosensitive component electrically connected to the circuit board, wherein the optical lens is held on the photosensitive path of the photosensitive component;
- An advantage of the present application is to provide an anti-shake drive assembly and a camera module, wherein the camera module uses a novel piezoelectric actuator as a drive element to not only provide a sufficient driving force, but also to The drive performance with higher precision and longer stroke is provided to meet the requirements for optical performance adjustment of the camera module, for example, the requirements for optical anti-shake.
- Another advantage of the present application is to provide an anti-shake drive assembly and a camera module, wherein the piezoelectric actuator is arranged in the camera module using a reasonable layout scheme to meet the needs of the camera module. Structural and dimensional requirements.
- Another advantage of the present application is to provide an anti-shake driving assembly and a camera module, wherein the anti-shake driving assembly is only equipped with one anti-shake movable part to realize the anti-shake of the camera module in the XOY plane , that is, the anti-shake driving assembly has a relatively simplified driving configuration.
- Another advantage of the present application is that it provides an anti-shake driving assembly and a camera module, wherein, in the anti-shake driving assembly, the mounting surface for mounting the photosensitive assembly and the mounting surface for mounting the driving substrate have a height difference so that The circuit board of the photosensitive assembly and the driving substrate for conducting the anti-shake driving part extend at different heights of the anti-shake driving assembly. In this way, when the photosensitive assembly is moved for optical anti-shake The driving substrate affects the movement of the photosensitive component.
- an anti-shake driving component which includes:
- An anti-shake fixing part wherein the anti-shake fixing part has a first installation surface suitable for installing a driving substrate thereon;
- An anti-shake movable part wherein the anti-shake movable part has a second mounting surface suitable for mounting the photosensitive component thereon, and there is a height difference between the first mounting surface and the second mounting surface;
- An anti-shake driving part electrically connected to the driving substrate and located between the anti-shake fixed part and the anti-shake movable part, the anti-shake driving part is suitable for actuating the anti-shake movable part and the anti-shake movable part
- the photosensitive assembly moves in the XOY plane set by the X axis and the Y axis or rotates in the XOY plane around the Z axis perpendicular to the X axis and the Y axis.
- the drive substrate installed on the first installation surface protrudes from the first height of the anti-shake drive assembly
- the circuit board of the photosensitive assembly installed on the second installation surface It is adapted to protrude from the second height of the anti-shake driving assembly.
- the height difference between the first installation surface and the second installation surface is 0.1mm-0.15mm.
- the driving substrate protrudes from the first side of the anti-shaking driving assembly
- the circuit board of the photosensitive assembly is adapted to extend from the first side of the anti-shaking driving assembly. side out.
- the drive substrate protrudes from the first side of the anti-shake drive assembly
- the circuit board of the photosensitive assembly is adapted to protrude from the second side of the anti-shake drive assembly. out.
- the first side is adjacent to the second side, or the first side is opposite to the second side.
- the anti-shake fixing part includes a base and an upper cover engaged with the base, and the interlocked upper cover and the base form a storage cavity therebetween, so The anti-shake movable part is suspended in the cavity of the anti-shake fixed part.
- the inner bottom surface of the base forms the first mounting surface.
- the base has an opening formed on a sidewall thereof, wherein the driving substrate protrudes from the opening to the anti-shaking driving assembly at the first height.
- the anti-shake movable part includes a carrier body, a carrier extension arm extending outward from the carrier body, and a friction plate formed on the lower surface of the carrier extension arm, wherein , the first piezoelectric actuator and the second piezoelectric actuator are frictionally coupled to the friction plate.
- the carrier body has a seating groove lower than the carrier extension arm, and an inner bottom surface of the seating groove forms the second mounting surface.
- the anti-shake movable part has a slot formed on the side wall of the carrier body and communicated with the placement slot, and the slot is configured to allow the photosensitive assembly to The circuit board protrudes from the anti-shake driving assembly at the second height from the slot.
- the opening and the slot have a height difference, and the height difference is 0.1mm-0.15mm.
- the opening and the slot are located on the first side of the anti-shake drive assembly.
- the drive substrate includes at least one conductive end and a connecting end extending outward from the conductive end, the first piezoelectric actuator and the second piezoelectric actuator The device is electrically connected to the at least one electrical connection end.
- the at least one conductive end includes a first conductive end and a second conductive end
- the first piezoelectric actuator is electrically connected to the first conductive end
- the first conductive end Two piezoelectric actuators are electrically connected to the second conductive end.
- connection end extends outward from the at least one conductive end and passes through the opening.
- the anti-shake driving part includes a first piezoelectric actuator and a second piezoelectric actuator frictionally coupled to the anti-shake movable part, wherein the The first piezoelectric actuator and the second piezoelectric actuator are arranged on opposite sides of the photosensitive assembly parallel to each other, and the first piezoelectric actuator and the second piezoelectric actuator
- the actuator is suitable for actuating the anti-shake movable part and the photosensitive assembly to move in the XOY plane set by the X-axis and the Y-axis or to move around the Z-axis perpendicular to the X-axis and the Y-axis. Rotate in the XOY plane.
- the first piezoelectric actuator and the second piezoelectric actuator are traveling wave piezoelectric actuators, wherein the first piezoelectric actuator
- the device includes a first piezoelectric ceramic plate and a first friction driving part protruding from the first piezoelectric ceramic plate, and the first piezoelectric ceramic plate is adapted to be deformed after being electrically driven to drive the first friction The driving part performs unidirectional swinging and reciprocating motion;
- the second piezoelectric actuator includes a second piezoelectric ceramic plate and a second friction driving part protruding from the second piezoelectric ceramic plate, and the second The piezoelectric ceramic plate is adapted to be deformed after being electrically driven to drive the second friction driving part to perform unidirectional swinging and reciprocating motion.
- the first piezoelectric actuator is adapted to deform along the direction set by the X-axis to actuate the anti-shake movable part and the photosensitive assembly along the The X-axis moves in the direction set
- the second piezoelectric actuator is adapted to deform along the X-axis set direction to actuate the anti-shake movable part and the photosensitive component move along the direction set by the X-axis, so that the anti-shake movable part and the photosensitive component are moved along the moving in the direction set by the X-axis;
- the first piezoelectric actuator is adapted to deform along the direction set by the Y-axis to actuate the anti-shake movable part and the photosensitive assembly along the direction set by the Y-axis moving
- the second piezoelectric actuator is adapted to deform along the direction set by the Y-axis to actuate the anti-shake movable part and the photosensitive assembly set along the Y-axis to move in the direction set by the first piezoelectric actuator and the second piezoelectric actuator to actuate the anti-shake movable part and the photosensitive assembly along the direction set by the Y axis to move;
- the first piezoelectric actuator is adapted to deform along the first direction set along the X-axis to actuate the anti-shake movable part and the photosensitive assembly along the X-axis. to move in the first direction of the X-axis
- the second piezoelectric actuator is adapted to deform along the second direction opposite to the first direction set by the X-axis to actuate the anti-shake movable
- the part and the photosensitive assembly move along the second direction set by the X-axis, so that the photosensitive assembly is actuated by the first piezoelectric actuator and the second piezoelectric actuator to rotate around the The Z axis rotates in the XOY plane;
- the first piezoelectric actuator is adapted to deform along a first direction set along the Y-axis to actuate the anti-shake movable part and the photosensitive assembly along the Y-axis. to move in the first direction of the Y-axis
- the second piezoelectric actuator is adapted to deform along the second direction opposite to the first direction set by the Y-axis to actuate the anti-shake movable part and the photosensitive assembly move along the second direction set by the Y-axis, so that the photosensitive assembly is actuated by the first piezoelectric actuator and the second piezoelectric actuator to rotate around the The Z axis rotates within the XOY plane.
- the anti-shake movable part is smoothly supported by the first friction driving part of the first piezoelectric actuator and the first friction driving part of the second piezoelectric actuator. On the second friction drive part.
- the first piezoelectric ceramic plate is arranged on the anti-shake fixed part, and the first friction driving part is frictionally coupled to the anti-shake movable part;
- the second piezoelectric ceramic plate is disposed on the anti-shake fixed part, and the second friction driving part is frictionally coupled to the anti-shake movable part.
- the first piezoelectric actuator and the second piezoelectric actuator have the same height dimension
- the height dimension of the first piezoelectric actuator and the second piezoelectric actuator is 0.7mm-0.9mm.
- the anti-shake drive assembly further includes a pre-pressure device provided between the anti-shake driving part and the anti-shake fixing part, so as to provide The pre-pressure forces the first friction driving part of the first piezoelectric actuator and the second friction driving part of the second piezoelectric actuator to be frictionally coupled to the anti-shake movable part.
- the pre-pressing device includes a first elastic element arranged between the base and the first piezoelectric ceramic plate of the first piezoelectric actuator, so as to pass through the The elastic force of the first elastic element itself generates the pre-pressure to force the first friction driving part of the first piezoelectric actuator to interfere with the anti-shake movable part, so that the first pressure
- the first friction driving part of the electric actuator is frictionally coupled to the anti-shake movable part
- the pre-pressure device further includes a second piezoelectric actuator disposed on the base and the second piezoelectric actuator.
- the moving part in such a way that the second friction driving part of the second piezoelectric actuator is frictionally coupled to the anti-shake movable part.
- a camera module which includes:
- a photosensitive component including a circuit board and a photosensitive component electrically connected to the circuit board, wherein the optical lens is held on the photosensitive path of the photosensitive component;
- an anti-shake method for a camera module is proposed.
- An advantage of the present application is that it provides a method for anti-shake of a camera module, which uses a first piezoelectric actuator and a second piezoelectric actuator with special driving characteristics and cooperates with an anti-shake movable part. Optical anti-shake of the camera module in multiple directions.
- Another advantage of the present application is to provide an anti-shake method for a camera module, wherein the anti-shake method for the camera module can use the first piezoelectric actuator and the second piezoelectric actuator with special driving characteristics
- the actuator and an anti-shake movable part realize the rotation anti-shake of the camera module in the XOY plane.
- an anti-shake method for a camera module which includes:
- the first piezoelectric actuator and the second piezoelectric actuator are arranged in parallel on opposite sides of the photosensitive assembly.
- the first direction is an X-axis direction
- the second direction is a Y-axis direction
- the first direction is the Y-axis direction
- the second direction is the X-axis direction
- the first piezoelectric actuator and the second piezoelectric actuator have a rectangular structure, wherein the first piezoelectric actuator and the The length direction of the second piezoelectric actuator is the X-axis direction, and the width directions of the first piezoelectric actuator and the second piezoelectric actuator are the Y-axis direction.
- the first piezoelectric actuator and the second piezoelectric actuator are symmetrically arranged on the photosensitive assembly with the X axis as the axis of symmetry. opposite sides.
- the first piezoelectric actuator and the second piezoelectric actuator of the anti-shake driving part are simultaneously driven to actuate the photosensitive component installed on the anti-shake movable part.
- Moving along the first direction includes: driving the first piezoelectric actuator to deform along its length direction to actuate the anti-shake movable part to move along the first direction so as to drive the anti-shake movable part installed on the anti-shake
- the photosensitive component of the movable part moves along the first direction; and, driving the second piezoelectric actuator to deform along its length direction to actuate the anti-shake movable part along the first direction
- the movement drives the photosensitive assembly mounted on the anti-shake movable part to move along the first direction.
- the first piezoelectric actuator and the second piezoelectric actuator of the anti-shake driving part are simultaneously driven to actuate the movable part installed on the anti-shake
- the photosensitive assembly is then moved along the second direction, including: driving the first piezoelectric actuator to deform along its width direction to actuate the anti-shake movable part to move along the second direction so as to drive
- the photosensitive element mounted on the anti-shake movable part moves along the second direction; and, driving the second piezoelectric actuator to deform along its width direction to actuate the anti-shake movable part along the moving along the second direction so as to drive the photosensitive assembly mounted on the anti-shake movable part to move along the second direction.
- the first piezoelectric actuator and the second piezoelectric actuator are symmetrically arranged on the photosensitive assembly with the Y axis as the axis of symmetry. opposite sides.
- the first piezoelectric actuator and the second piezoelectric actuator of the anti-shake driving part are simultaneously driven to actuate the photosensitive component installed on the anti-shake movable part.
- Moving along the first direction includes: driving the first piezoelectric actuator to deform along its width direction to actuate the anti-shake movable part to move along the first direction so as to drive the anti-shake movable part installed on the anti-shake
- the photosensitive component of the movable part moves along the first direction; and, driving the second piezoelectric actuator to deform along its width direction to actuate the anti-shake movable part along the first direction
- the movement drives the photosensitive assembly mounted on the anti-shake movable part to move along the first direction.
- the first piezoelectric actuator and the second piezoelectric actuator of the anti-shake driving part are simultaneously driven to actuate the movable part installed on the anti-shake
- the photosensitive assembly is then moved along the second direction, including: driving the first piezoelectric actuator to deform along its length direction to actuate the anti-shake movable part to move along the second direction so as to drive
- the photosensitive element mounted on the anti-shake movable part moves along the second direction; and, driving the second piezoelectric actuator to deform along its length direction to actuate the anti-shake movable part along the moving along the second direction so as to drive the photosensitive assembly mounted on the anti-shake movable part to move along the second direction.
- the anti-shake movable part is suspended in the housing cavity of the anti-shake fixed part, the first piezoelectric actuator of the anti-shake driving part and A second piezoelectric actuator is provided between the anti-shake fixed part and the anti-shake movable part.
- the anti-shake movable part is stably supported by the first actuator and the second piezoelectric actuator.
- the circuit board for connecting the driving substrate of the first piezoelectric actuator and the second piezoelectric actuator and the circuit board of the photosensitive component is The storage cavities are staggered from each other.
- a method for anti-shake of a camera module which includes:
- the first piezoelectric actuator and the second piezoelectric actuator are arranged in parallel on opposite sides of the photosensitive assembly.
- the first piezoelectric actuator and the second piezoelectric actuator are symmetrically arranged on the photosensitive assembly with the X axis as the axis of symmetry. opposite sides.
- the first direction is the positive direction of the X-axis direction
- the second direction is the negative direction of the X-axis direction
- the first direction is a negative direction of the X-axis direction
- the second direction is a positive direction of the X-axis direction
- the first piezoelectric actuator and the second piezoelectric actuator are symmetrically arranged on the photosensitive assembly with the Y axis as the axis of symmetry. opposite sides.
- the first direction is the positive direction of the Y-axis direction
- the second direction is the negative direction of the Y-axis direction
- the first direction is the negative direction of the Y-axis direction
- the second direction is the positive direction of the Y-axis direction
- driving the first piezoelectric actuator of the anti-shake driving part to actuate the photosensitive component mounted on the anti-shake movable part to move in the first direction includes: driving the The first piezoelectric actuator is deformed along its length direction to drive the anti-shake movable part to move along the first direction so as to drive the photosensitive assembly mounted on the anti-shake movable part to move along the Moving in the first direction; wherein, simultaneously driving the second piezoelectric actuator of the anti-shake driving part to actuate the photosensitive assembly mounted on the anti-shake movable part to move in the second direction includes: simultaneously driving The second piezoelectric actuator is deformed along its length direction to drive the anti-shake movable part to move along the second direction so as to drive the photosensitive assembly mounted on the anti-shake movable part to move along the second direction. to move in the second direction.
- driving the first piezoelectric actuator of the anti-shake driving part to actuate the photosensitive component mounted on the anti-shake movable part to move in the first direction includes: driving the The first piezoelectric actuator is deformed along its width direction to drive the anti-shake movable part to move along the first direction so as to drive the photosensitive assembly installed on the anti-shake movable part to move along the Moving in the first direction; wherein, simultaneously driving the second piezoelectric actuator of the anti-shake driving part to actuate the photosensitive assembly mounted on the anti-shake movable part to move in the second direction includes: simultaneously driving The second piezoelectric actuator is deformed along its width direction to drive the anti-shake movable part to move along the second direction so as to drive the photosensitive assembly mounted on the anti-shake movable part to move along the second direction. to move in the second direction.
- a driving assembly and a camera module for driving a lens are proposed.
- An object of the present invention is to provide a driving assembly for driving a lens and a camera module, in which a driving carrier for carrying an adjustable group of lenses is rationally constructed and arranged and for driving the driving carrier to move
- the drive components provide sufficient structural space for the drive components and other components of the camera module.
- An object of the present invention is to provide a driving assembly for driving a lens and a camera module, wherein a friction plate is arranged between the driving element and the carrier body of the driving carrier, so that the driving element An optimized installation space is formed with the carrier body of the drive carrier.
- An object of the present invention is to provide a driving assembly for driving a lens and a camera module, wherein the friction plate divides the structural space between the driving element and the carrier body of the driving carrier into a first structural space and an opposite
- the second structural space provides optimized installation space and improved layout for other parts of the drive assembly, making the structure of the drive assembly and camera module more compact.
- An object of the present invention is to provide a driving assembly for driving a lens and a camera module, wherein the friction plate divides the structural space between the driving element and the carrier body of the driving carrier into a first structural space and an opposite The second structure space, in which the guiding device and the position sensing element of the driving assembly are reasonably arranged, so that the structure of the driving assembly and the camera module is more compact, and at the same time, the driving force can be large enough to meet the driving requirements of the camera module. need.
- An object of the present invention is to provide a driving assembly for driving the lens and a camera module, wherein the module structure design of the driving assembly and the camera module not only simplifies the module structure, but also reduces the size of the module. Size and weight, but also provides greater lens movement travel and thrust.
- a driving assembly for driving a lens which is characterized in that it includes:
- a drive carrier having a carrier body for carrying an adjustable group of lenses
- a drive element for providing a drive force for moving the drive carrier along an adjustment direction, wherein a structural space is formed between the drive element and the carrier body of the drive carrier;
- a friction plate which is arranged in the structural space between the drive element and the carrier body of the drive carrier, and one end of the friction plate is fixedly connected to the carrier body of the drive carrier, and the other end is connected to the carrier body of the drive carrier.
- a drive element is operatively connected such that the drive element can drive the friction plate to move in the adjustment direction.
- the friction plate arranged in the structural space between the drive element and the carrier body of the drive carrier divides the structural space into a first structural space and a first structural space.
- the space is opposite to the second structural space.
- a position sensing element for sensing the moving position of the drive carrier or the friction plate is arranged in the first structural space, and in the second structural space opposite to the first structural space
- a guide device for guiding the movement of the drive carrier along the adjustment direction is arranged in the construction space.
- the drive carrier further includes a connecting end protruding outward from the carrier body of the drive carrier, the connecting end has a connecting hole, the guiding device includes a guide rod, and The guide rod passes through the connection hole of the connection end of the drive carrier parallel to the adjustment direction, so that the drive carrier can move along the guide device driven by the drive element.
- connection end of the drive carrier includes a first connection end extending outward from the carrier body of the drive carrier and a second connection end extending outward from the carrier body of the drive carrier, wherein the first connecting end and the second connecting end are respectively located on opposite sides of the carrier body, and
- the guide device includes a first guide rod and a second guide rod, wherein the first guide rod passes through the first connection hole of the first connection end of the drive carrier, and the second guide rod passes through the second connection hole of the second connection end of the drive carrier. Connecting holes, so that the drive carrier can move along the first guide rod and the second guide rod of the guide device under the drive of the drive element, wherein the first guide rod and the second guide rod are parallel to each other and arranged along the adjustment direction .
- the second connection end of the drive carrier further has a seating groove, and the friction plate is embedded in the seating groove and fixedly connected with the carrier body of the drive carrier, wherein the The seating grooves are configured as clamping rails, between which the friction plate is clamped.
- the driving element is configured as a piezoelectric actuator, including a piezoelectric plate and a friction driving part fixed on the piezoelectric plate, wherein the friction driving part interacts with the friction plate connected so as to be able to drive the friction plate to move along the adjustment direction.
- a pre-pressure device for providing a pre-pressure to the driving element, so that the driving element maintains frictional contact with the friction plate under the action of the pre-pressure.
- a friction mechanism is provided between the pre-pressure device and the friction plate, so that the friction plate and the pre-pressure device are movably connected through the friction mechanism, wherein the pre-pressure device Press the friction mechanism against the friction plate.
- the driving element is arranged on one side of the friction plate, and the friction mechanism is arranged on the opposite side of the friction plate, so that the friction plate The friction plate is clamped between the driving element and the friction mechanism under the action of the driving element, so that the friction plate can move along the adjustment direction under the driving action of the driving element.
- the pre-pressure device includes an upper clamping part, a lower clamping part, and a connection part connecting the upper clamping part and the lower clamping part, wherein the pre-pressure device uses the friction plate and the The driving element and the friction mechanism arranged on both sides of the friction plate are elastically clamped between the upper clamping part and the lower clamping part of the pre-pressure device.
- a driving element is respectively provided on two opposite sides of the friction plate, so that the friction plate is clamped between the two driving elements, and can be moved between the two driving elements. Move along the adjustment direction under the coordinated driving action of the
- the pre-pressure device includes an upper clamping part, a lower clamping part, and a connection part connecting the upper clamping part and the lower clamping part, wherein the pre-pressure device uses the friction plate and the The driving elements arranged on both sides of the friction plate are elastically clamped between the upper clamping part and the lower clamping part of the pre-pressure device.
- the driving assembly further includes a driving substrate electrically connected to the driving element, and used to deliver current to the driving element, wherein the driving substrate is clamped by the pre-pressure device on the above the drive element.
- the drive substrate includes a first conductive terminal, a second conductive terminal, and a connection strip connecting the first conductive terminal and the second conductive terminal, wherein the first conductive terminal passes through The upper clamping portion of the pre-pressure device is clamped on the corresponding driving element, and the second conductive end is clamped on the corresponding driving element through the lower clamping portion of the pre-pressure device.
- the second conductive end of the driving substrate is provided with an extension, and the extension extends into the first structural space, wherein the position sensing element is arranged at the On the extension part, and opposite to the position of the position sensing element, a sensing magnet is arranged on the friction plate.
- the driving assembly further includes a bearing mechanism, the bearing mechanism has a plurality of positioning columns forming a placement space, and the driving element is set under the clamping of the pre-pressing device In the installation space, the drive substrate is fixed on the positioning column of the carrying mechanism.
- the bearing mechanism further has a bearing connection part, and the bearing connection part is fixedly connected to the drive housing, wherein the drive housing includes an upper housing and is connected to the upper housing.
- the body is connected into a lower casing of a closed structure.
- the friction mechanism includes grooves or roller tables configured on the pre-pressure device and/or friction plate, and balls or slides arranged in the grooves or roller tables. piece.
- a camera module including
- the photosensitive component is used to receive light signals and convert the received light signals into image signals
- the lens group includes a fixed group and an adjustable group, wherein the driving element of the driving assembly is configured to drive the adjustable group of the lens group.
- the adjustable group of the lens group includes a zoom group and a focus group
- the driving carrier of the driving assembly includes a first carrier for carrying the zoom group and The second carrier for carrying the focusing group, wherein the first carrier and the second carrier are arranged coaxially and sequentially along the adjustment direction, and can be driven separately.
- An object of the present invention is to provide a driving assembly for driving a lens and a camera module, in which a driving carrier for carrying an adjustable group of lenses is rationally constructed and arranged and for driving the driving carrier to move
- the drive components provide sufficient structural space for the drive components and other components of the camera module.
- An object of the present invention is to provide a driving assembly for driving a lens and a camera module, which include a first carrier and a second carrier, which are respectively used to carry at least one adjustable group of lenses, so as to be able to The at least one adjustable group is independently controlled and driven to move in an adjustment direction.
- An object of the present invention is to provide a driving assembly for driving a lens and a camera module, in which the initial position of the driving element relative to the corresponding friction plate is rationally constructed and arranged, so that the friction plate is always kept at the same position during the movement process. It is within the driving range of the corresponding driving element, and provides stable, reliable and sufficiently large driving force.
- An object of the present invention is to provide a driving assembly for driving a lens and a camera module, wherein components such as friction plates and driving elements of the first carrier and the second carrier are rationally constructed and arranged, so that during the driving process Interference between the first carrier and the second carrier is avoided, reliable and sufficient driving force is ensured, and the structures of the driving assembly and the camera module are made more compact.
- An object of the present invention is to provide a driving assembly for driving the lens and a camera module, wherein the module structure design of the driving assembly and the camera module not only simplifies the module structure, but also reduces the size of the module. Size and weight, but also provides greater lens movement travel and thrust.
- a driving assembly for driving a lens including:
- the drive carrier includes a first carrier and a second carrier, which are respectively used to carry at least one adjustable group of lenses, wherein the first carrier and the second carrier are sequentially arranged on the same axis along the adjustment direction, and can be independently of each other moving in said adjustment direction;
- the first friction plate is arranged between the carrier body of the first carrier and the first driving element, wherein one end of the first friction plate is fixedly connected to the carrier body of the first carrier, and the other end is operatively connected to the first driving element;
- the second friction plate is arranged between the carrier body of the second carrier and the second drive element, wherein one end of the second friction plate is fixedly connected to the carrier body of the second carrier, and the other end is operatively connected to the second drive element;
- first drive element and the first friction plate operatively connected with the first drive element are located on the first side of the drive assembly, and the second drive element and the second friction plate operatively connected with the second drive element are located at the drive assembly the second side of the first carrier and the second side are opposite to each other with respect to the axis of the first carrier and the second carrier,
- first friction plate fixedly connected to the carrier body of the first carrier extends along the adjustment direction toward a direction away from the second carrier
- the second friction plate fixedly connected to the carrier body of the second carrier extends along the adjustment direction.
- the adjustment direction extends toward a direction away from the first carrier.
- the first driving element is arranged at a middle position of the driving assembly along the adjustment direction
- the second driving element is arranged at a middle position of the driving assembly along the adjustment direction. centre position.
- the first driving element and the second driving element are arranged parallel to each other along the adjustment direction.
- the first driving element and the second driving element are configured as piezoelectric actuators, respectively including a piezoelectric plate and a friction driving part fixed on the piezoelectric plate, wherein the first The friction driving part of a driving element is operatively connected with the first friction plate so as to drive the first friction plate to move along the adjustment direction, and the friction driving part of the second driving element is operatively connected with the second friction plate so as to drive the second friction plate The board moves in the adjustment direction.
- the first friction plate is always kept within the driving range of the first driving element during the movement, and the second friction plate is always kept within the driving range of the second driving element during the movement. within range.
- the friction driving portion of the first driving element in the initial position, is operatively connected to the first friction plate at an intermediate position of the first friction plate along the adjustment direction, and /or the friction drive part of the second drive element is operatively connected to the second friction plate at an intermediate position of the second friction plate in the adjustment direction.
- the friction drive portion of the first drive element in the initial position, is operatively connected to the first friction plate at one end of the first friction plate along the adjustment direction
- the friction drive portion of the second drive element is operatively connected to the second friction plate at one end of the second friction plate along the adjustment direction
- the drive assembly further includes a guide device for guiding the first carrier and the second carrier to move along the adjustment direction, wherein the guide device includes at least one guide A rod, the guide rod passing through the first carrier and the second carrier parallel to the adjustment direction, so that the first carrier and the second carrier can move along the guide device.
- the first carrier includes a first connection end extending outward from the carrier body of the first carrier and a second connection end extending outward from the carrier body of the first carrier, Wherein the first connection end and the second connection end are respectively located on opposite sides of the carrier body of the first carrier, wherein the first connection end of the first carrier has a first connection hole, and the second connection end of the first carrier has a first connection hole.
- the second carrier also includes a first connection end extending outward from the carrier body of the second carrier and a second connection end extending outward from the carrier body of the second carrier, wherein the first connection end and the second connection end are respectively located at the first The opposite sides of the carrier body of the two carriers, wherein the first connection end of the second carrier has a first connection hole, and the second connection end of the second carrier has a second connection hole,
- the guiding device comprises a first guide rod and a second guide rod, wherein the first guide rod passes through the second connection hole of the second connection end of the first carrier and the first connection hole of the first connection end of the second carrier,
- the second guide rod passes through the first connecting hole of the first connecting end of the first carrier and the second connecting hole of the second connecting end of the second carrier, so that the first carrier and the second carrier can respectively connect the first driving element and the second connecting hole.
- the first guide rod and the second guide rod independently move along the guide device, wherein the first guide rod and the second guide rod are arranged parallel to each other along the adjustment direction.
- the first guide rod and the second guide rod of the guiding device have a height difference.
- the second connection end of the first carrier has a seating groove
- the first friction plate is inserted into the seating groove of the second connection end and fixed with the carrier body of the first carrier connected
- the second connection end of the second carrier has a settling groove
- the second friction plate is inserted into the settling groove of the second connection end and fixedly connected with the carrier body of the second carrier.
- the drive assembly further includes a first preload device, which is configured to provide a preload to the first drive element, so that the first drive element and the first friction plate remains in frictional contact, and
- the drive assembly also includes a second preload device, which is configured to provide a preload to the second drive element, so that the second drive element maintains frictional contact with the second friction plate under the action of the preload.
- a first friction mechanism is provided between the first pre-pressure device and the first friction plate, so that the first friction plate and the first pre-pressure device are movably connected through the first friction mechanism, and
- a second friction mechanism is arranged between the second pre-pressure device and the second friction plate, so that the second friction plate and the second pre-pressure device are movably connected through the second friction mechanism.
- the first driving element is provided on one side of the first friction plate
- the first friction mechanism is provided on the opposite side of the first friction plate, so that the first friction plate is clamped between the first driving element and the first friction mechanism, and the first friction plate can move along the adjustment direction driven by the first driving element, and,
- a second drive element is set on one side of the second friction plate, and a second friction mechanism is set on the opposite side of the second friction plate, so that the second friction plate is clamped between the second drive element and the second friction plate. between the mechanisms, and the second friction plate can move along the adjustment direction driven by the second driving element.
- the first preloading device and the second preloading device respectively include an upper clamping part, a lower clamping part and a connection part connecting the upper clamping part and the lower clamping part,
- the first pre-pressure device elastically clamps the first friction plate, the first driving element and the first friction mechanism arranged on both sides of the first friction plate between the upper clamping part and the lower clamping part of the first pre-pressing device, and
- the second pre-pressure device elastically clamps the second friction plate, the second driving element and the second friction mechanism arranged on both sides of the second friction plate between the upper clamping part and the lower clamping part of the second pre-pressing device.
- one first driving element is respectively arranged on two opposite sides of the first friction plate, so that the first friction plate is clamped between the two first driving elements, and can move along the adjustment direction under the cooperative driving action of the two first driving elements, and
- a second driving element is respectively arranged on two opposite sides of the second friction plate, so that the second friction plate is clamped between the two second driving elements, and can cooperate with the two second driving elements Driven to move along the adjustment direction.
- the first preloading device and the second preloading device respectively include an upper clamping part, a lower clamping part and a connection part connecting the upper clamping part and the lower clamping part,
- first pre-compression device elastically clamps the first friction plate and the first drive elements arranged on both sides of the first friction plate between the upper clamping part and the lower clamping part of the first pre-compression device, and
- the second pre-compression device elastically clamps the second friction plate and the second driving elements arranged on both sides of the second friction plate between the upper clamping part and the lower clamping part of the second pre-compression device.
- a first driving substrate is provided between the first preloading device and the first driving element, and the first driving substrate is electrically connected to the first driving element, and is used to give the first driving element delivering current, wherein the first drive substrate is clamped on the first drive element by the first preloading device, and
- a second driving substrate is arranged between the second pre-pressing device and the second driving element, the second driving substrate is electrically connected to the second driving element, and is used to deliver current to the second driving element, wherein the second driving substrate is passed through the second pre-pressing device.
- the pressure device is clamped on the second drive element.
- the first driving substrate includes a first conductive terminal, a second conductive terminal, and a connection strip connecting the first conductive terminal and the second conductive terminal, wherein the first driving substrate The first conductive end is clamped on the corresponding driving element through the upper clamping part of the first pre-pressure device, and the second conductive end of the first driving substrate is clamped on the corresponding driving element through the lower clamping part of the first pre-pressing device. on the component, and
- the second drive substrate includes a third conductive end, a fourth conductive end, and a connecting strip connecting the third conductive end and the fourth conductive end, wherein the third conductive end of the second drive substrate passes through the lower clamping portion of the second pre-pressing device Clamped on the corresponding driving element, the fourth conductive end of the second driving substrate is clamped on the corresponding driving element by the upper clamping portion of the second pre-pressing device.
- the drive assembly further includes a first bearing mechanism and a second bearing mechanism, the first bearing mechanism and the second bearing mechanism respectively have a plurality of positioning columns forming a placement space, wherein the first bearing mechanism A driving element is set in the installation space of the first carrying mechanism under the clamping of the first pre-pressure device, and the first conductive end and the second conductive end of the first driving substrate are respectively fixed outside the installation space of the first carrying mechanism on the positioning post of the first carrying mechanism, and
- the second driving element is set in the installation space of the second carrying mechanism under the clamping of the second pre-pressure device, and the third conductive end and the fourth conductive end of the second driving substrate are respectively outside the installation space of the second carrying mechanism It is fixed on the positioning column of the second carrying mechanism.
- the first bearing mechanism and the second bearing mechanism further have bearing connection parts respectively, and the bearing connection parts are fixedly connected to the drive housing, wherein the drive housing includes an upper The casing and the lower casing are connected with the upper casing to form a closed structure.
- the first friction mechanism includes a groove or a roller table configured on the first pre-pressure device and/or the first friction plate, and ball or slider, and
- the second friction mechanism includes grooves or roller tables configured on the second pre-pressure device and/or the second friction plate, and balls or sliders arranged in the grooves or roller tables.
- a camera module including
- the photosensitive component is used to receive light signals and convert the received light signals into image signals
- the lens group includes a fixed group and an adjustable group, wherein the driving element of the driving assembly is configured to drive the adjustable group of the lens group.
- the adjustable group of the lens group includes a zoom group and a focus group, wherein the first carrier of the drive assembly is used to carry the first carrier of the zoom group,
- the second carrier of the driving assembly is used to carry the focusing group, wherein the first carrier and the second carrier can be driven independently by the first driving element and the second driving element respectively.
- An object of the present invention is to provide a driving assembly for driving a lens, an assembly method thereof, and a camera module, wherein the carrying mechanism has a placement space, and the driving element can be accommodated in the placement space of the carrying mechanism, so as to provide the drive assembly and
- the other components of the camera module provide simple and reliable support measures and optimized structural space, and simplify the assembly process of the drive components.
- An object of the present invention is to provide a driving assembly for driving a lens, an assembly method thereof, and a camera module, wherein the carrying mechanism has a carrying connection portion, which is configured to be fixedly connected to the driving housing of the driving assembly, so as to provide The other parts of the drive element provide simple and reliable fixation and simplify the assembly process of the drive assembly.
- An object of the present invention is to provide a driving assembly for driving a lens, an assembly method thereof, and a camera module, wherein the supporting mechanism has a positioning column, which can provide a mounting plane with good flatness for the driving substrate, and can define The substrate length and connection width of the driving substrate optimize the composition and structure of the entire driving assembly and simplify the assembly process of the driving assembly.
- An object of the present invention is to provide a drive assembly for driving a lens, an assembly method thereof, and a camera module, wherein other parts of the drive assembly are rationally constructed and arranged based on a bearing mechanism, so that the drive assembly and the camera module
- the structure is more compact, while ensuring that it can provide sufficient driving force.
- An object of the present invention is to provide a driving assembly for driving a lens, an assembly method thereof, and a camera module, wherein the module structure design of the driving assembly and the camera module not only simplifies the module structure, but also reduces the The size and weight of the module also provide a larger lens movement stroke and thrust.
- a driving assembly for driving a lens which is characterized in that it includes:
- a drive carrier having a carrier body for carrying an adjustable group of lenses
- a driving element for providing a driving force for moving the driving carrier along an adjustment direction
- the driving element is accommodated in the installation space of the carrying mechanism
- the driving substrate is fixed on the carrying mechanism and is electrically connected with the driving element accommodated in the installation space of the carrying mechanism, and is used for delivering current to the driving element.
- the carrying mechanism includes a plurality of positioning columns extending toward the carrier body of the driving carrier, and the plurality of positioning columns form a U-shaped opening installation space.
- the driving substrate includes a first conductive terminal, a second conductive terminal, and a connecting strip connecting the first conductive terminal and the second conductive terminal, wherein the first conductive terminal of the driving substrate and the second conductive end are fixed on the positioning column of the carrying mechanism.
- the carrying mechanism further has a carrying connection portion configured to be fixedly connected to the drive housing of the drive assembly.
- the driving housing includes an upper housing and a lower housing connected to the upper housing to form a closed structure, and a connecting groove is provided on the side wall of the lower housing , the bearing connecting portion of the bearing mechanism is embedded in the connecting groove for fixing.
- the load-bearing connection portion of the load-bearing mechanism is configured as a T-shaped insert, which is inserted into the connection groove of the lower case for fixing.
- overlapping grooves are further provided on the side wall of the lower casing of the driving casing, and the overlapping grooves include inner overlapping grooves and outer overlapping grooves, and the inner overlapping grooves The height is greater than the height of the outer overlapping groove.
- the drive assembly further includes a friction plate, which is arranged between the carrier body of the drive carrier and the drive element, wherein one end of the friction plate is connected to the drive carrier
- the main body of the carrier is fixedly connected, and the other end is operatively connected with the driving element, so that the driving element can drive the friction plate to move.
- a pre-pressure device for providing a pre-pressure to the driving element, so that the driving element maintains frictional contact with the friction plate under the action of the pre-pressure.
- the bearing mechanism is arranged between the preloading device and the driving housing, and supports the preloading device, the driving element and the driving carrier.
- the carrying mechanism fixes the preloading device and the driving element to the driving housing.
- a friction mechanism is provided between the pre-pressure device and the friction plate, so that the friction plate and the pre-pressure device are movably connected through the friction mechanism, wherein the pre-pressure device Press the friction mechanism against the friction plate.
- the driving element is provided on one side of the friction plate, and the friction mechanism is provided on the opposite side of the friction plate, so that the friction plate The pressure device is clamped between the driving element and the friction mechanism, so that the friction plate can move along the adjustment direction under the driving action of the driving element.
- the pre-pressure device includes an upper clamping part, a lower clamping part, and a connection part connecting the upper clamping part and the lower clamping part, wherein the pre-pressure device uses the friction plate and the The driving element and the friction mechanism arranged on both sides of the friction plate are elastically clamped between the upper clamping part and the lower clamping part of the pre-pressure device.
- a driving element is provided on two opposite sides of the friction plate, so that the friction plate is clamped between the two driving elements, and can move between the two The driving elements move along the adjustment direction under the coordinated driving action.
- the pre-pressure device includes an upper clamping part, a lower clamping part, and a connection part connecting the upper clamping part and the lower clamping part, wherein the pre-pressure device uses the friction plate and the The driving elements arranged on both sides of the friction plate are elastically clamped between the upper clamping part and the lower clamping part of the pre-pressure device.
- the driving substrate is disposed between the pre-pressing device and the driving element, wherein the driving substrate is clamped on the driving element by the pre-pressing device .
- the first conductive end of the driving substrate is clamped on the corresponding driving element by the upper clip part of the pre-pressure device, and the second conductive end of the driving substrate is clamped by The lower clamping portion of the pre-pressure device is clamped on the corresponding driving element.
- the second conductive end of the driving substrate is provided with an extension, wherein the position sensing element is disposed on the extension, and is opposite to the position of the position sensing element. Sensing magnets are arranged on the friction plate.
- the driving element is configured as a piezoelectric actuator, including a piezoelectric plate and a friction driving part fixed on the piezoelectric plate, wherein the friction driving part interacts with the friction plate connected so as to be able to drive the friction plate to move along the adjustment direction.
- the drive assembly further includes a guide device configured to be in sliding connection with the drive carrier, so that the drive carrier can move along the guide device driven by the drive element.
- the guide device includes a guide rod, and the guide rod passes through the connection hole of the connection end of the drive carrier parallel to the adjustment direction, so that the drive carrier can be driven by the drive element. Move down along the guide.
- connection end of the drive carrier includes a first connection end extending outward from the carrier body of the drive carrier and a second connection end extending outward from the carrier body of the drive carrier, wherein the first connecting end and the second connecting end are respectively located on opposite sides of the carrier body, and
- the guide device includes a first guide rod and a second guide rod, wherein the first guide rod passes through the first connection hole of the first connection end of the drive carrier, and the second guide rod passes through the second connection hole of the second connection end of the drive carrier. Connecting holes, so that the drive carrier can move along the first guide rod and the second guide rod of the guide device under the drive of the drive element, wherein the first guide rod and the second guide rod are parallel to each other and arranged along the adjustment direction .
- a camera module including
- the photosensitive component is used to receive light signals and convert the received light signals into image signals
- the lens group includes a fixed group and an adjustable group, wherein the driving element of the driving assembly is configured to drive the adjustable group of the lens group.
- the adjustable group of the lens group includes a zoom group and a focus group
- the driving carrier of the driving assembly includes a first carrier for carrying the zoom group and The second carrier for carrying the focusing group, wherein the first carrier and the second carrier are arranged coaxially and sequentially along the adjustment direction, and can be driven separately.
- a method for assembling a driving assembly for driving a lens comprising the following steps:
- step S2 electrically connect the piezoelectric plates of the two driving elements to the first conductive end and the second conductive end of the driving substrate respectively, and make the The friction driving parts of the two driving elements are arranged opposite to each other.
- step S3 the upper clamping part and the lower clamping part of the pre-pressure device respectively clamp the first conductive end and the second conductive end of the driving substrate, through The upper clamping part and the lower clamping part of the preloading device clamp the driving substrate and the driving element in the preloading device, and further arrange the driving element on the carrying mechanism.
- step S4 the first conductive end and the second conductive end of the drive substrate are respectively fixed on the positioning posts of the carrying mechanism.
- step S5 the load-bearing connection part of the load-bearing structure is placed in the connection groove of the lower shell of the drive shell for fixing, and then the An upper housing of the drive housing is secured to the lower housing to complete the assembly of the drive assembly.
- An object of the present invention is to provide a driving assembly for driving a lens and a camera module, wherein the driving element and the friction plate for providing driving force to the driving carrier are rationally constructed and arranged to ensure that the driving assembly and camera The modules are of sufficiently small size.
- An object of the present invention is to provide a driving assembly for driving a lens and a camera module, wherein the upper driving element, the lower driving element and the friction plate clamped between the upper driving element and the lower driving element are integrated
- the height is not greater than the maximum height of the lens group, so as to ensure that the camera module has a sufficiently small size in the height direction.
- An object of the present invention is to provide a driving assembly for driving a lens and a camera module, wherein the upper driving element, the lower driving element and friction plates are rationally constructed and arranged so that the upper driving element and the lower driving element
- the drive elements can cooperatively drive the drive carrier used to carry the adjustable group of lenses, and provide stable, reliable and sufficiently large driving force.
- An object of the present invention is to provide a driving assembly for driving a lens and a camera module, in which components such as friction plates and driving elements of the first carrier and the second carrier are rationally constructed and arranged, so that the lens group
- the unique zoom group and focus group avoid mutual interference during the driving process, and at the same time ensure that the structure of the driving assembly and the camera module is more compact.
- An object of the present invention is to provide a driving assembly for driving the lens and a camera module, wherein the module structure design of the driving assembly and the camera module not only simplifies the module structure, but also reduces the size of the module. Size and weight, but also provides greater lens movement travel and thrust.
- a driving assembly for driving a lens including:
- a drive carrier having a carrier body for carrying an adjustable group of lenses
- a driving element for providing a driving force for moving the driving carrier along an adjustment direction
- a friction plate which is arranged between the drive element and the carrier body of the drive carrier, and one end of the friction plate is fixedly connected to the carrier body of the drive carrier, and the other end is functionally connected to the drive element, so that The driving element can drive the friction plate to move along the adjustment direction;
- the driving element includes an upper driving element and a lower driving element, which are arranged on both sides of the friction plate and clamp the friction plate in the middle, so that the friction plate can be driven under the cooperative driving action of the upper driving element and the lower driving element moving along the adjustment direction,
- the overall height of the upper drive element, the lower drive element and the friction plate clamped between the upper drive element and the lower drive element is not greater than the maximum height of the carrier body of the drive carrier.
- a pre-pressure device that provides pre-pressure to the upper driving element and the lower driving element, so that the upper driving element and the lower driving element are in contact with the upper driving element under the action of the pre-pressure
- the friction plates are kept in frictional contact.
- the pre-pressure device includes an upper clamping part, a lower clamping part, and a connection part connecting the upper clamping part and the lower clamping part, wherein the pre-pressure device uses the friction plate and the The upper driving element and the lower driving element arranged on both sides of the friction plate are elastically clamped between the upper clamping part and the lower clamping part of the pre-pressure device.
- the driving assembly further includes a driving substrate electrically connected to the upper driving element and the lower driving element, and used to deliver current to the upper driving element and the lower driving element, wherein the driving substrate Clamped on the upper drive element and the lower drive element by the pre-stressing device.
- the drive substrate includes a first conductive terminal, a second conductive terminal, and a connection strip connecting the first conductive terminal and the second conductive terminal, wherein the first conductive terminal passes through The upper clamping part of the pre-pressure device is clamped on the upper driving element, and the second conductive end is clamped on the lower driving element through the lower clamping part of the pre-pressure device.
- the second conductive end of the driving substrate is provided with an extension, wherein the position sensing element is disposed on the extension, and is opposite to the position of the position sensing element. Sensing magnets are arranged on the friction plate.
- the upper driving element and the lower driving element are configured as piezoelectric actuators, respectively including a piezoelectric plate and a friction driving part fixed on the piezoelectric plate, wherein the upper driving element and the friction driving part of the lower driving element are respectively operatively connected with the friction plate on both sides, so as to cooperatively drive the friction plate to move along the adjustment direction.
- the driving assembly further includes a bearing mechanism, the bearing mechanism has a plurality of positioning columns forming a placement space, and the upper driving element and the lower driving element are mounted on the pre-pressing device It is arranged in the installation space under clamping, wherein the driving substrate is fixed on the positioning column of the carrying mechanism.
- the load-carrying mechanism further has a load-bearing connection portion, and the load-bearing connection portion is fixedly connected to the drive housing, wherein the drive housing includes an upper housing and is connected to the upper housing. A lower shell with a closed structure.
- a connecting groove is provided on the side wall of the lower casing of the driving casing, and the load-bearing connecting portion of the bearing mechanism is inserted into the connecting groove for fixing.
- overlapping grooves are further provided on the side wall of the lower casing of the driving casing, and the overlapping grooves include inner overlapping grooves and outer overlapping grooves, and the inner overlapping grooves The height is greater than the height of the outer overlapping groove.
- the drive assembly further includes a guide device, which is configured to be slidably connected with the drive carrier, so that the drive carrier can drive the upper drive element and the lower drive element along the lower edge. Move with the guiding device.
- the guide device includes a guide rod, and the guide rod passes through the connection hole of the connection end of the drive carrier parallel to the adjustment direction, so that the drive carrier can drive the upper drive element and The lower drive elements move along the guide under the cooperative drive.
- connection end of the drive carrier includes a first connection end extending outward from the carrier body of the drive carrier and a second connection end extending outward from the carrier body of the drive carrier, wherein the first connecting end and the second connecting end are respectively located on opposite sides of the carrier body, and
- the guide device includes a first guide rod and a second guide rod, wherein the first guide rod passes through the first connection hole of the first connection end of the drive carrier, and the second guide rod passes through the second connection hole of the second connection end of the drive carrier.
- the connection hole so that the drive carrier can move along the first guide rod and the second guide rod of the guide device under the cooperative driving of the upper drive element and the lower drive element, wherein the first guide rod and the second guide rod are parallel to each other and along the Arranged according to the adjustment direction.
- the first guide rod and the second guide rod of the guiding device have a height difference.
- a camera module including
- the driving assembly for driving a lens according to any one of claims 1 to 15;
- the photosensitive component is used to receive light signals and convert the received light signals into image signals
- the lens group includes a fixed group and an adjustable group, wherein the drive assembly is configured to drive the adjustable group of the lens group under the coordinated drive of the upper drive element and the lower drive element.
- the adjustable group of the lens group includes a zoom group and a focus group
- the driving carrier of the driving assembly includes a first carrier for carrying the zoom group and The second carrier for carrying the focusing group, wherein the first carrier and the second carrier are arranged coaxially and sequentially along the adjustment direction, and can be driven separately.
- the drive assembly further includes:
- a first driving element configured to provide a driving force for moving the first carrier along the adjustment direction
- the first friction plate is arranged between the carrier body of the first carrier and the first drive element, wherein one end of the first friction plate is fixedly connected to the carrier body of the first carrier, and the other end is operatively connected to the first drive element, so that The first driving element can drive the first friction plate to move along the adjustment direction,
- the first drive element includes a first upper drive element and a first lower drive element, which are arranged on both sides of the first friction plate and clamp the first friction plate in the middle, so that the first friction plate can be driven on the first
- the element and the first lower driving element move along the adjustment direction under the cooperative driving action;
- a second driving element configured to provide a driving force for moving the second carrier along the adjustment direction
- the second friction plate is arranged between the carrier body of the second carrier and the second drive element, wherein one end of the second friction plate is fixedly connected to the carrier body of the second carrier, and the other end is operatively connected to the second drive element, so that the second driving element can drive the second friction plate to move along the adjustment direction,
- the second drive element includes a second upper drive element and a second lower drive element, which are arranged on both sides of the second friction plate and clamp the second friction plate in the middle, so that the second friction plate can be driven on the second The element and the second lower driving element move along the adjustment direction under the cooperative driving action.
- the first upper driving element and the first lower driving element disposed on both sides of the first friction plate and clamping the first friction plate in the middle are located in the driving assembly
- the first side of the second friction plate, the second upper drive element and the second lower drive element that are arranged on both sides of the second friction plate and clamp the second friction plate in the middle are located on the second side of the drive assembly, wherein the The first side and the second side are opposite to each other with respect to the axis of the first carrier and the second carrier.
- the overall height of the first upper driving element, the first lower driving element and the first friction plate clamped between the first upper driving element and the first lower driving element is not greater than the maximum height of the lens group, and the overall height of the second upper drive element and the second lower drive element and the second friction plate clamped between the second upper drive element and the second lower drive element is not greater than the lens The maximum height of the group.
- a driving assembly and a camera module for driving the lens are also provided.
- An object of the present invention is to provide a driving assembly for driving a lens and a camera module, wherein the relevant parts of the driving assembly are arranged symmetrically along the axis, so as to ensure that the design of the driving assembly and the camera module is simple , the structure is standardized and more compact, and can provide stable, reliable and sufficiently large driving force.
- An object of the present invention is to provide a driving assembly for driving a lens and a camera module, wherein the driving elements for providing driving force to the driving carrier are rationally constructed and arranged so that the first driving element and the second driving Viewed along the axis, the elements are centrally symmetrical, so that the first driving element and the second driving element can be constructed as standard parts with the same structure, thereby reducing manufacturing costs and simplifying the assembly process.
- An object of the present invention is to provide a driving assembly for driving a lens and a camera module, wherein the friction mechanism is rationally constructed and arranged so that the first friction mechanism and the second friction mechanism are centrally symmetrical when viewed along the axis, Therefore, the first friction mechanism and the second friction mechanism can be configured as standard parts with the same structure, thereby reducing manufacturing costs and simplifying the assembly process.
- An object of the present invention is to provide a driving assembly for driving a lens and a camera module, wherein the friction plate, the driving element and the optional friction mechanism are rationally constructed and arranged so that the structural unit formed by it can be constructed Standard parts with the same structure make the structural design of the drive assembly and the camera module simpler, reduce manufacturing costs and simplify the assembly process.
- An object of the present invention is to provide a driving assembly for driving the lens and a camera module, wherein the module structure design of the driving assembly and the camera module not only simplifies the module structure, but also reduces the size of the module. Size and weight, but also provides greater lens movement travel and thrust.
- the drive carrier includes a first carrier and a second carrier, which are respectively used to carry at least one adjustable group of lenses, wherein the first carrier and the second carrier are sequentially arranged on the same axis along the adjustment direction, and can be independently of each other moving in said adjustment direction;
- the first friction plate is arranged between the carrier body of the first carrier and the first driving element, wherein one end of the first friction plate is fixedly connected to the carrier body of the first carrier, and the other end is operatively connected to the first driving element;
- the second friction plate is arranged between the carrier body of the second carrier and the second drive element, wherein one end of the second friction plate is fixedly connected to the carrier body of the second carrier, and the other end is operatively connected to the second drive element;
- first drive element and the second drive element are centrally symmetrical when viewed along the axis.
- the first drive element and the second drive element are configured as standard parts with the same structure.
- the drive assembly further includes a first preload device, which is configured to provide a preload to the first drive element, so that the first drive element and the first friction plate remains in frictional contact, and
- the drive assembly also includes a second preload device, which is configured to provide a preload to the second drive element, so that the second drive element maintains frictional contact with the second friction plate under the action of the preload.
- a first friction mechanism is provided between the first pre-pressure device and the first friction plate, so that the first friction plate and the first pre-pressure device are movably connected through the first friction mechanism, and
- a second friction mechanism is arranged between the second pre-pressure device and the second friction plate, so that the second friction plate and the second pre-pressure device are movably connected through the second friction mechanism.
- the first driving element is provided on one side of the first friction plate
- the first friction mechanism is provided on the opposite side of the first friction plate, so that the first friction plate is clamped between the first driving element and the first friction mechanism, and the first friction plate can move along the adjustment direction driven by the first driving element, and,
- a second drive element is set on one side of the second friction plate, and a second friction mechanism is set on the opposite side of the second friction plate, so that the second friction plate is clamped between the second drive element and the second friction plate. mechanism, and the second friction plate can move along the adjustment direction driven by the second drive element,
- first friction mechanism and the second friction mechanism are centrally symmetrical when viewed along the axis.
- the first friction mechanism and the second friction mechanism are configured as standard parts with the same structure.
- the first structural unit formed by the first driving element and the first friction mechanism is configured to have the same structure as the second structural unit formed by the second driving element and the second friction mechanism. standard, and is centrally symmetric when viewed along said axis.
- the first friction mechanism includes a groove or a roller table configured on the first pre-pressure device and/or the first friction plate, and ball or slider, and
- the second friction mechanism includes grooves or roller tables configured on the second pre-pressure device and/or the second friction plate, and balls or sliders arranged in the grooves or roller tables.
- the first preloading device and the second preloading device respectively include an upper clamping part, a lower clamping part and a connection part connecting the upper clamping part and the lower clamping part,
- the first pre-pressure device elastically clamps the first friction plate, the first driving element and the first friction mechanism arranged on both sides of the first friction plate between the upper clamping part and the lower clamping part of the first pre-pressing device room, and
- the second pre-pressure device elastically clamps the second friction plate, the second driving element and the second friction mechanism arranged on both sides of the second friction plate between the upper clamping part and the lower clamping part of the second pre-pressing device .
- one first driving element is respectively arranged on two opposite sides of the first friction plate, so that the first friction plate is clamped between the two first driving elements, and can move along the adjustment direction under the cooperative driving action of the two first driving elements, and
- a second driving element is respectively arranged on two opposite sides of the second friction plate, so that the second friction plate is clamped between the two second driving elements, and can cooperate with the two second driving elements Driven to move along the adjustment direction,
- the two first drive elements and the two second drive elements are centrally symmetrical when viewed along the axis.
- the first preloading device and the second preloading device respectively include an upper clamping part, a lower clamping part and a connection part connecting the upper clamping part and the lower clamping part,
- first pre-compression device elastically clamps the first friction plate and the first drive elements arranged on both sides of the first friction plate between the upper clamping part and the lower clamping part of the first pre-compression device, and
- the second pre-compression device elastically clamps the second friction plate and the second drive elements arranged on both sides of the second friction plate between the upper clamping part and the lower clamping part of the second pre-compression device.
- the first driving element and the second driving element are configured as piezoelectric actuators, respectively including a piezoelectric plate and a friction driving part fixed on the piezoelectric plate, wherein the first The friction driving part of a driving element is operatively connected with the first friction plate so as to drive the first friction plate to move along the adjustment direction, and the friction driving part of the second driving element is operatively connected with the second friction plate so as to drive the second friction plate The board moves in the adjustment direction.
- the drive assembly further includes a guide device for guiding the first carrier and the second carrier to move along the adjustment direction, wherein the guide device includes at least one guide A rod, the guide rod passing through the first carrier and the second carrier parallel to the adjustment direction, so that the first carrier and the second carrier can move along the guide device.
- the first carrier includes a first connection end extending outward from the carrier body of the first carrier and a second connection end extending outward from the carrier body of the first carrier, Wherein the first connection end and the second connection end are respectively located on opposite sides of the carrier body of the first carrier, wherein the first connection end of the first carrier has a first connection hole, and the second connection end of the first carrier has a first connection hole.
- the second carrier also includes a first connection end extending outward from the carrier body of the second carrier and a second connection end extending outward from the carrier body of the second carrier, wherein the first connection end and the second connection end are respectively located at the first The opposite sides of the carrier body of the two carriers, wherein the first connection end of the second carrier has a first connection hole, and the second connection end of the second carrier has a second connection hole,
- the guiding device comprises a first guide rod and a second guide rod, wherein the first guide rod passes through the second connection hole of the second connection end of the first carrier and the first connection hole of the first connection end of the second carrier,
- the second guide rod passes through the first connecting hole of the first connecting end of the first carrier and the second connecting hole of the second connecting end of the second carrier, so that the first carrier and the second carrier can respectively connect the first driving element and the second connecting hole.
- the first guide rod and the second guide rod independently move along the guide device, wherein the first guide rod and the second guide rod are arranged parallel to each other along the adjustment direction.
- the first guide rod and the second guide rod of the guiding device have a height difference.
- the second connection end of the first carrier has a seating groove
- the first friction plate is inserted into the seating groove of the second connection end and fixed with the carrier body of the first carrier connected
- the second connection end of the second carrier has a settling groove
- the second friction plate is inserted into the settling groove of the second connection end and fixedly connected with the carrier body of the second carrier.
- a first driving substrate is provided between the first preloading device and the first driving element, and the first driving substrate is electrically connected to the first driving element, and is used to give the first driving element delivering current, wherein the first drive substrate is clamped on the first drive element by the first preloading device, and
- a second driving substrate is arranged between the second pre-pressing device and the second driving element, the second driving substrate is electrically connected to the second driving element, and is used to deliver current to the second driving element, wherein the second driving substrate is passed through the second pre-pressing device.
- the pressure device is clamped on the second drive element,
- first driving substrate and the second driving substrate are centrally symmetrical when viewed along the axis.
- the first driving substrate includes a first conductive terminal, a second conductive terminal, and a connection strip connecting the first conductive terminal and the second conductive terminal, wherein the first driving substrate The first conductive end is clamped on the corresponding driving element through the upper clamping part of the first pre-pressure device, and the second conductive end of the first driving substrate is clamped on the corresponding driving element through the lower clamping part of the first pre-pressing device. on the component, and
- the second drive substrate includes a third conductive end, a fourth conductive end, and a connecting strip connecting the third conductive end and the fourth conductive end, wherein the third conductive end of the second drive substrate passes through the lower clamping portion of the second pre-pressing device Clamped on the corresponding driving element, the fourth conductive end of the second driving substrate is clamped on the corresponding driving element by the upper clamping portion of the second pre-pressing device.
- the drive assembly further includes a first bearing mechanism and a second bearing mechanism, the first bearing mechanism and the second bearing mechanism respectively have a plurality of positioning columns forming a placement space, wherein the first bearing mechanism A driving element is set in the installation space of the first carrying mechanism under the clamping of the first pre-pressure device, and the first conductive end and the second conductive end of the first driving substrate are respectively fixed outside the installation space of the first carrying mechanism on the positioning post of the first carrying mechanism, and
- the second driving element is set in the installation space of the second carrying mechanism under the clamping of the second pre-pressure device, and the third conductive end and the fourth conductive end of the second driving substrate are respectively outside the installation space of the second carrying mechanism It is fixed on the positioning column of the second carrying mechanism.
- the first bearing mechanism and the second bearing mechanism further have bearing connection parts respectively, and the bearing connection parts are fixedly connected to the drive housing, wherein the drive housing includes an upper The casing and the lower casing are connected with the upper casing to form a closed structure.
- a camera module including:
- the photosensitive component is used to receive light signals and convert the received light signals into image signals
- the lens group includes a fixed group and an adjustable group, wherein the driving element of the driving assembly is configured to drive the adjustable group of the lens group.
- the adjustable group of the lens group includes a zoom group and a focus group, wherein the first carrier of the drive assembly is used to carry the first carrier of the zoom group,
- the second carrier of the driving assembly is used to carry the focusing group, wherein the first carrier and the second carrier can be driven independently by the first driving element and the second driving element respectively.
- FIG. 1 illustrates a schematic diagram of a camera module according to an embodiment of the present application.
- Fig. 2 illustrates a schematic diagram of a modified implementation of the camera module according to an embodiment of the present application.
- Fig. 3 illustrates a schematic diagram of another variant implementation of the camera module according to the embodiment of the present application.
- FIG. 4 illustrates a schematic diagram of a photosensitive component of the camera module according to an embodiment of the present application.
- Fig. 5 is a schematic exploded perspective view of the anti-shake driving assembly of the camera module according to the embodiment of the present application.
- Fig. 6 illustrates a schematic perspective view of the anti-shake movable part in the anti-shake driving assembly according to an embodiment of the present application.
- Fig. 7 illustrates a three-dimensional exploded schematic diagram of the anti-shake fixing part in the anti-shake driving assembly according to an embodiment of the present application.
- Fig. 8 illustrates a schematic diagram of an anti-shake driving part in the anti-shake driving assembly according to an embodiment of the present application.
- FIG. 9 illustrates a schematic diagram of a piezoelectric actuator of the anti-shake driving part according to an embodiment of the present application.
- Fig. 10 illustrates a schematic diagram of the deformation action of the piezoelectric actuator according to the embodiment of the present application.
- Fig. 11 illustrates a half-sectional schematic diagram of the anti-shake driving assembly according to an embodiment of the present application.
- Fig. 12 illustrates another perspective view of the anti-shake driving assembly according to an embodiment of the present application.
- Fig. 13 illustrates another perspective view of the anti-shake driving assembly according to an embodiment of the present application.
- Fig. 14 illustrates another half cross-sectional view of the anti-shake driving assembly according to the embodiment of the present application.
- Fig. 15 shows a schematic diagram of a modified implementation of the anti-shake driving part according to the embodiment of the present application.
- Fig. 16 illustrates a flow chart of the anti-shake method of the camera module according to the embodiment of the present application.
- Fig. 17 illustrates a schematic diagram of the anti-shake process of the camera module according to an embodiment of the present application.
- Fig. 18 illustrates another flow chart of the anti-shake method of the camera module according to the embodiment of the present application.
- Fig. 19 illustrates another flow chart of the anti-shake method of the camera module according to the embodiment of the present application.
- Fig. 20 illustrates another flow chart of the anti-shake method of the camera module according to the embodiment of the present application.
- FIG. 21 illustrates a schematic diagram of a camera module according to an embodiment of the present application.
- Fig. 22 shows a schematic diagram of a modified implementation of the camera module according to the embodiment of the present application.
- Fig. 23 shows a schematic diagram of another modified implementation of the camera module according to the embodiment of the present application.
- FIG. 24 illustrates a schematic diagram of a photosensitive component of the camera module according to an embodiment of the present application.
- Fig. 25 is a perspective exploded schematic diagram of the anti-shake driving assembly of the camera module according to the embodiment of the present application.
- Fig. 26 illustrates a schematic perspective view of the anti-shake movable part in the anti-shake driving assembly according to an embodiment of the present application.
- Fig. 27 is a schematic exploded perspective view of the anti-shake fixing part in the anti-shake driving assembly according to an embodiment of the present application.
- Fig. 28 is a schematic diagram of the anti-shake driving part in the anti-shake driving assembly according to the embodiment of the present application.
- FIG. 29 illustrates a schematic diagram of a piezoelectric actuator of the anti-shake driving part according to an embodiment of the present application.
- Fig. 30 illustrates a schematic diagram of deformation action of the piezoelectric actuator according to an embodiment of the present application.
- Fig. 31 illustrates a half-sectional schematic diagram of the anti-shake driving assembly according to an embodiment of the present application.
- Fig. 32 illustrates another perspective view of the anti-shake driving assembly according to an embodiment of the present application.
- FIG. 33 illustrates another perspective view of the anti-shake driving assembly according to an embodiment of the present application.
- Fig. 34 illustrates another half cross-sectional view of the anti-shake driving assembly according to the embodiment of the present application.
- Fig. 35 shows a schematic diagram of a modified implementation of the anti-shake driving part according to the embodiment of the present application.
- Fig. 36 shows a schematic diagram of another variant implementation of the anti-shake driving part according to the embodiment of the present application.
- FIG. 37 illustrates a schematic diagram of a camera module according to an embodiment of the present application.
- Fig. 38 shows a schematic diagram of a modified implementation of the camera module according to an embodiment of the present application.
- Fig. 39 shows a schematic diagram of another modified implementation of the camera module according to the embodiment of the present application.
- Fig. 40 illustrates a schematic diagram of a photosensitive component of the camera module according to an embodiment of the present application.
- Fig. 41 is a schematic exploded perspective view of the anti-shake drive assembly of the camera module according to an embodiment of the present application.
- Fig. 42 illustrates a schematic perspective view of the anti-shake movable part in the anti-shake driving assembly according to an embodiment of the present application.
- Fig. 43 is a schematic exploded perspective view of the anti-shake fixing part in the anti-shake drive assembly according to an embodiment of the present application.
- Fig. 44 is a schematic diagram of the anti-shake driving part in the anti-shake driving assembly according to the embodiment of the present application.
- FIG. 45 illustrates a schematic diagram of a piezoelectric actuator of the anti-shake driving part according to an embodiment of the present application.
- Fig. 46 illustrates a schematic diagram of the deformation action of the piezoelectric actuator according to the embodiment of the present application.
- Fig. 47 illustrates a half-sectional schematic diagram of the anti-shake driving assembly according to an embodiment of the present application.
- Fig. 48 illustrates another perspective view of the anti-shake driving assembly according to an embodiment of the present application.
- Fig. 49 illustrates another perspective view of the anti-shake driving assembly according to an embodiment of the present application.
- Fig. 50 is a schematic diagram illustrating another half of the anti-shake driving assembly according to an embodiment of the present application.
- Fig. 51 shows a schematic diagram of a modified implementation of the anti-shake driving part according to an embodiment of the present application.
- Fig. 52 illustrates a schematic diagram of another modified implementation of the anti-shake driving part according to the embodiment of the present application.
- FIG. 53 illustrates a schematic diagram of a camera module according to an embodiment of the present application.
- Fig. 54 shows a schematic diagram of a modified implementation of the camera module according to an embodiment of the present application.
- Fig. 55 shows a schematic diagram of another modified implementation of the camera module according to the embodiment of the present application.
- Fig. 56 illustrates a schematic diagram of a photosensitive component of the camera module according to an embodiment of the present application.
- Fig. 57 is a schematic exploded perspective view of the anti-shake drive assembly of the camera module according to an embodiment of the present application.
- Fig. 58 illustrates a schematic perspective view of the anti-shake movable part in the anti-shake driving assembly according to an embodiment of the present application.
- Fig. 59 is a schematic exploded perspective view of the anti-shake fixing part in the anti-shake driving assembly according to an embodiment of the present application.
- Fig. 60 shows a schematic diagram of the anti-shake driving part in the anti-shake driving assembly according to an embodiment of the present application.
- FIG. 61 illustrates a schematic diagram of a piezoelectric actuator of the anti-shake driving part according to an embodiment of the present application.
- Fig. 62 illustrates a schematic diagram of the deformation action of the piezoelectric actuator according to the embodiment of the present application.
- Fig. 63 illustrates a half-sectional schematic diagram of the anti-shake driving assembly according to an embodiment of the present application.
- Fig. 64 illustrates another perspective view of the anti-shake driving assembly according to an embodiment of the present application.
- Fig. 65 illustrates another perspective view of the anti-shake driving assembly according to an embodiment of the present application.
- FIG. 66 illustrates another half-sectional view of the anti-shake driving assembly according to an embodiment of the present application.
- Fig. 67 shows a schematic diagram of a modified implementation of the anti-shake driving part according to the embodiment of the present application.
- Fig. 68 shows a schematic diagram of another modified implementation of the anti-shake driving part according to the embodiment of the present application.
- Fig. 69 is a schematic diagram of the optical path of some embodiments of the camera module according to the present application.
- Fig. 70 is a schematic cross-sectional view of some embodiments of a camera module according to the present application.
- Figure 71 is an exploded view of some embodiments of a drive assembly according to the present application.
- Figure 72 is an exploded view of a drive carrier and friction plate according to some embodiments of the present application.
- 73 is an axial view of some embodiments of a first carrier according to the present application.
- Figure 74 is an axial view of some embodiments of a second carrier according to the present application.
- Fig. 75 is a perspective view of a first carrier and a second carrier according to some embodiments of the present application, including a first friction plate and a second friction plate fixedly connected to the first carrier and the second carrier, respectively;
- Fig. 76 is an axial view of the first carrier and the second carrier according to some embodiments of the present application, including the first friction plate and the second friction plate fixedly connected to the first carrier and the second carrier respectively, and respectively passing through the first friction plate and the second friction plate. a first guide rod and a second guide rod of a carrier and a second carrier;
- Figure 77 is a perspective view of the structural state shown in Figure 76;
- Fig. 78 is a plan view of the first carrier and the second carrier according to some embodiments of the present application, including the first friction plate and the second friction plate fixedly connected to the first carrier and the second carrier respectively, passing through the first carrier and the second carrier The first guide rod and the second guide rod of the two carriers, and the first and second driving elements respectively driving the first friction plate and the second friction plate;
- Figure 79 is a perspective view of the structural state shown in Figure 78;
- 80a-c are schematic diagrams of the relationship between piezoelectric actuators and friction plates according to some embodiments of the present application.
- 81 is a schematic side view of a first carrier, including an assembled first friction plate, a first drive element, and a first friction mechanism, according to some embodiments of the present application;
- 82 is a schematic side view of a second carrier, including an assembled second friction plate, second drive element, and second friction mechanism, according to some embodiments of the present application;
- Figure 83 is a schematic side view of a first carrier according to some embodiments of the present application, including a first upper drive element and a first lower drive element on both sides of a first friction plate;
- 84a-d are schematic diagrams of piezoelectric drive principles according to some embodiments of the present application.
- FIG. 85 is a schematic side view of a second carrier, including a second upper drive element and a second lower drive element on both sides of a second friction plate, according to some embodiments of the present application;
- Figure 86 is a perspective view of a drive assembly according to some embodiments of the present application.
- Figure 87 is a perspective view of a pre-compression device according to some embodiments of the present application.
- Figure 88 is a perspective view of a drive substrate according to some embodiments of the present application.
- Figure 89 is a perspective view of a drive assembly, including an installed pre-stress device and drive substrate, according to some embodiments of the present application;
- Figure 90a is an axial view of a drive assembly according to some embodiments of the present application, wherein each friction plate is equipped with a drive element and a friction mechanism on both sides;
- Fig. 90b is an axial view of a drive assembly according to other embodiments of the present application, wherein each friction plate is equipped with an upper drive element and a lower drive element on both sides;
- Figure 91 is a perspective view of a drive assembly, including a mounted carrier mechanism, according to some embodiments of the present application.
- Figure 92 is a perspective view of a carrier mechanism according to some embodiments of the present application.
- 93 is a perspective view of a drive assembly including a drive housing having an upper housing and a lower housing, according to some embodiments of the present application;
- Fig. 94 is a schematic flowchart of an assembly method for driving a lens driving assembly according to some embodiments of the present application.
- Fig. 95 is a schematic flowchart of a method for assembling a camera module according to some embodiments of the present application.
- first, second, third, etc. are only used to distinguish one feature from another, and do not represent any limitation on the features. Therefore, without departing from the teachings of the present application, the first drive element discussed below may also be referred to as a zoom drive element, and the second drive element may also be referred to as a focus drive element. Similarly, the first driving substrate may also be referred to as a zoom substrate, the second driving substrate may also be referred to as a focusing substrate, and so on.
- the camera module As shown in Figures 1 to 15, the camera module according to the embodiment of the present application is illustrated, which includes a photosensitive component 30, an optical lens 10 held on the photosensitive path of the photosensitive component 30, and used to drive the photosensitive component 30.
- the component 30 moves to realize the anti-shake driving component 20 for adjusting the optical performance of the camera module.
- the anti-shake driving assembly 20 has a placement groove located in its middle area, wherein the photosensitive assembly 30 is installed in the anti-shake driving assembly in a manner of being accommodated in the placement groove.
- Component 20 so that when the anti-shake driving component 20 is driven, it can carry the photosensitive component 30 and move along a preset direction to realize the adjustment of the optical performance of the camera module, for example, to perform optical Anti-shake, etc.
- the optical lens 10 is installed on the anti-shake driving assembly 20 in a manner of being fixed on the top surface of the anti-shake driving assembly 20 and the optical lens 10 is located on the photosensitive path of the photosensitive assembly 30 , so that the photosensitive component 30 can receive the light projected from the optical lens 10 to form an image.
- the optical lens 10 held on the photosensitive path of the photosensitive component 30 to collect external imaging light includes a lens barrel 11 and is installed in the lens barrel 11
- the lens set, wherein the lens set includes at least one optical lens 12, and the number of the at least one optical lens 12 is not limited.
- the optical lens 10 is fixedly arranged on the light-sensing path of the light-sensing assembly 30 in a manner of being directly arranged on the top surface of the anti-shake driving assembly 20 .
- the optical lens 10 can be placed on the top surface of the anti-shake driving assembly 20 through a mirror mount 13, wherein the mirror mount 13 has a through hole formed therein , the light refracted by the optical lens 10 can enter the photosensitive component 30 through the through hole.
- the optical lens 10 can be placed on the top surface of the anti-shake driving assembly 20 through a lens driving part 14, wherein the lens driving part 14 has a setting formed therein
- the optical lens 10 is installed in the installation space of the lens driving part 14, and the lens driving part 14 can drive the optical lens 10 to move to achieve optical focusing and/or optical anti-shake functions.
- the lens driving part 14 may be a driving lens driving part 14 of a voice coil lens driving part 14, a piezoelectric lens driving part 14, an SMA (Shape Memory Alloy) lens driving part 14 or the like.
- the mirror holder 13 or the lens driving part 14 can directly accommodate a plurality of optical lenses 12 of the optical lens 10; in another example of the present application, the mirror A seat 13 or a lens driving portion 14 can accommodate the lens barrel 11 of the optical lens 10 and the plurality of optical lenses 12 provided in the lens barrel 11 .
- the lens driving part 14 also includes a lens focusing part, and the lens focusing part is suitable for driving the optical lens 10 to translate in the Z-axis direction to adjust the The distance between the optical lens 10 and the photosensitive assembly 30 realizes the focusing function of the optical lens 10 .
- the lens driving part 14 may also include a lens anti-shake part, and the lens anti-shake part is suitable for driving the optical lens 10 to translate and move in the X-axis and Y-axis directions.
- the lens driving part 14 may only include the lens focusing part or the lens anti-shake part; the lens driving part 14 may also include the lens focusing part and the lens anti-shake part at the same time, Therefore, the lens driving part 14 can realize not only the lens focusing function but also the lens anti-shake function.
- the photosensitive assembly 30 includes a circuit board 31 , a photosensitive chip 32 , an electronic component 33 , a base 34 and a filter element 35 .
- the photosensitive chip 32 is arranged on the circuit board 31 and is electrically connected to the circuit board 31, wherein the base 34 is arranged on the circuit board 31 and is located on the peripheral side of the photosensitive chip 32, so The filter element 35 is held on the photosensitive path of the photosensitive chip 32 by being mounted on the base 34 , and the photosensitive chip 32 includes a photosensitive area and a non-photosensitive area surrounding the photosensitive area.
- the photosensitive chip 32 is mounted on the upper surface of the circuit board 31 and is electrically connected to the circuit board 31 by means of gold wires.
- the photosensitive chip 32 can also be arranged on the circuit board 31 in other ways and/or be electrically connected to the circuit board 31 in other ways, for example, by flip-chip bonding Attached to the lower surface of the circuit board 31 , this is not limited by the present application.
- the photosensitive path of the photosensitive chip 32 forms the photosensitive path of the photosensitive component 30 .
- the base 34 is disposed on the circuit board 31 to package the electronic components 33 on the circuit board 31 and to support other components.
- the base is implemented as a separately molded plastic bracket, which is attached to the surface of the circuit board 31 by an adhesive and used to support other components.
- the base can also be formed on the circuit board 31 in other ways, for example, the base is implemented as a molded base, which is integrally formed on the The preset position of the circuit board 31 is not limited by this application.
- the filter element 35 is held on the photosensitive path of the photosensitive chip 32 for filtering the imaging light entering the photosensitive chip 32 .
- the filter element 35 is installed on the base 34 and corresponds to at least the photosensitive area of the photosensitive chip 32, in this way, the filter element 35 is held on the On the photosensitive path of the photosensitive chip 32 .
- the filter element 35 can also be installed on the base 34 in other ways, for example, first set the filter element bracket on the base 34, and then place The filter element 35 is installed on the support of the filter element 35 , that is, in this example, the filter element 35 can be indirectly installed on the base 34 through other supports.
- the filter element 35 can also be installed in other positions of the variable focus camera module, for example, the filter element 35 is formed in the optical lens 10 (for example , as a layer of filter film attached to the surface of a certain optical lens of the zoom lens group), which is not limited by the present application.
- existing driving elements for driving optical components are electromagnetic motors, such as voice coil motors (Voice Coil Motor: VCM), shape memory alloy actuators (Shape of Memory Alloy Actuator: SMA) and the like.
- voice coil motors Voice Coil Motor: VCM
- shape memory alloy actuators Shape of Memory Alloy Actuator: SMA
- existing voice coil motors and shape memory alloy drivers are only suitable for driving optical components weighing less than 100mg, that is, if the weight of optical components exceeds 100mg, the existing drivers will not be able to meet the application requirements of camera modules .
- the existing voice coil motor is equipped with a coil and a magnet inside.
- the internal magnetic field will affect each other, resulting in displacement or vibration of the magnet, reducing the stability of its drive control. .
- this application proposes a new type of driver, which not only has relatively larger driving force and better driving performance (specifically including: higher precision driving control and longer driving stroke), but also can Adapt to the current development trend of light weight and thinner camera modules.
- the new driver is a piezoelectric actuator with a new structure, and the piezoelectric actuator can meet the technical requirements of the camera module for the driver.
- the piezoelectric actuator is arranged in the camera module in a suitable arrangement to form an anti-shake drive assembly 20 for driving the photosensitive assembly 30 for position adjustment, so that it meets the requirements.
- the anti-shake driving assembly 20 includes an anti-shake movable part 21, an anti-shake driving part 22, an anti-shake fixed part 23, a pre-pressure device 24, a guide device 25 and a driving substrate 26,
- the anti-shake movable part 21 is suitable for installing the photosensitive assembly 30 thereon
- the anti-shake movable part 21 is movable relative to the anti-shake fixed part 23, and the anti-shake driving part 22 is driven It is arranged between the anti-shake fixed part 23 and the anti-shake movable part 21, and the anti-shake driving part 22 is frictionally coupled to the anti-shake movable part 21 to pass through the anti-shake driving part
- the friction driving force provided by 22 drives the anti-shake movable part 21 to move relative to the anti-shake fixed part 23. In this way, the photosensitive assembly 30 is driven to move so as to realize the movement of the camera module. Adjustment of optical performance.
- the photosensitive assembly 30 is mounted on the anti-shake movable part 21 in a linked manner.
- the photosensitive assembly 30 is fixedly installed on the On the anti-shake movable part 21 , when the anti-shake driving part 22 drives the anti-shake movable part 21 , the photosensitive assembly 30 is also linked by the anti-shake movable part 21 .
- the anti-shake driving part 22 is arranged between the anti-shake fixed part 23 and the anti-shake movable part 21, for example, in a specific example of the present application, the anti-shake driving part 22 is respectively connected to The anti-shake movable part 21 and the anti-shake fixed part 23 are disposed between the anti-shake fixed part 23 and the movable part.
- the anti-shake driving part 22 is adapted to drive the photosensitive assembly 30 to translate and/or move in the X-axis direction (ie, the direction set by the X-axis) and the Y-axis direction (ie, the direction set by the Y-axis) Rotate around the Z-axis direction (ie, the direction set by the Z-axis), so as to realize translational anti-shake and/or rotational anti-shake of the photosensitive assembly 30 .
- the X-axis direction and the Y-axis direction are perpendicular to each other, and the Z-axis direction is perpendicular to the plane where the X-axis direction and the Y-axis direction are located.
- the X axis, the Y axis and the Z axis constitute a three-dimensional coordinate system.
- the anti-shake fixing part 23 has a housing cavity, and the anti-shake movable part 21 and the anti-shake driving part 22 are accommodated in the housing cavity of the anti-shake fixing part 23 That is to say, in the embodiment of the present application, the anti-shake fixing part 23 can accommodate the anti-shake movable part 21 and the anti-shake driving part 22 therein. Moreover, the top surface of the anti-shake fixing part 23 is used for setting the optical lens 10 , so that the optical lens 10 can be placed on the photosensitive path of the photosensitive assembly 30 through the anti-shake fixing part 23 .
- the pre-pressure device 24 is arranged between the anti-shake fixing part 23 and the anti-shake driving part 22, and the pre-pressure device 24 maintains the anti-shake driving part 22 and the anti-shake driving part 22 through the pre-pressure generated by it.
- the anti-shake movable parts 21 are frictionally coupled.
- the guide device 25 is arranged between the anti-shake movable part 21 and the anti-shake fixed part 23, and the anti-shake movable part 21 is suspended on the anti-shake fixed part 23 through the guide device 25.
- the part 23 is used to provide guidance for the movement of the chip anti-shake movable part 21 .
- the driving substrate 26 is electrically connected to the anti-shake driving part 22 for realizing the circuit conduction of the anti-shake driving assembly 20 .
- the anti-shake movable part 21 is a mover, which can translate and/or rotate in the X-axis direction and the Y-axis direction under the drive of the anti-shake driving part 22 . Rotate in the direction of the Z axis to realize the function of anti-shake in translation and/or anti-shake in rotation of the photosensitive assembly 30 .
- the anti-shake driving part 22 uses a special driver as a driving element, the number of the anti-shake movable part 21 is one, that is, only one of the anti-shake movable parts 21 can be used in the anti-shake Driven by the shaking drive part 22, translation in the X-axis direction and the Y-axis direction and/or rotation around the Z-axis direction are realized.
- two movable parts that is, two movable carriers
- movement that is, one movable carrier moves in the X-axis direction driven by the X-direction piezoelectric motor
- the other movable carrier moves in the Y-axis direction driven by the Y-direction piezoelectric motor.
- the present application only needs one anti-shake movable part 21 (that is, only one movable carrier) to realize the translational movement in the X-axis direction and the Y-axis direction.
- the anti-shake movable part 21 includes a carrier body 211 , a carrier extension arm 212 and a friction plate 213 .
- the carrier body 211 forms the placement groove for installing the photosensitive component 30 therein, wherein the photosensitive component 30 is fixed in the placement groove so that the photosensitive component 30 can be mounted on the chip The movement is driven by the anti-shake movable part 21 .
- the carrier body 211 has a slot forming its side wall, so that the circuit board 31 of the photosensitive component 30 can protrude through the slot and extend to the electronic device motherboard. That is, in the embodiment of the present application, the carrier body 211 has a door formed on its side to allow the circuit board 31 of the photosensitive assembly 30 to pass through and extend out of the anti-shake drive assembly through the door. 20.
- the carrier extension arm 212 extends outward from the carrier body 211 , for example, the carrier extension arm 212 is integrally outward from the carrier body 211 extend.
- the carrier extension arm 212 and the carrier body 211 are not at the same Highly extended.
- the height of the carrier extension arm 212 is higher than that of the carrier body 211 , and the carrier extension arm 212 extends upward and outward from the carrier body 211 .
- the carrier extension arm 212 with a height difference cooperates with the carrier body 211 and the anti-shake fixing part 23 to form an accommodating space along the Z-axis direction, and the accommodating space can be used for arranging the
- the anti-shake driving part 22 makes the structure of the camera module more compact.
- the friction plate 213 is arranged on the carrier extension arm 212, for example, the friction plate 213 is integrally formed on the carrier extension arm 212, of course
- the friction plate 213 and the carrier extension arm 212 may also have a separate structure, for example, the friction plate 213 is a separate component and attached to the carrier extension arm 212 by an adhesive.
- the friction plate 213 is disposed on a side of the carrier extension arm 212 facing the anti-shake driving part 22 , that is, is disposed on a lower surface of the carrier extension arm 212 .
- the friction plate 213 is sandwiched between the anti-shake movable part 21 and the anti-shake driving part 22, so as to pass through the anti-shake driving part 22 and
- the pre-stressing device 24 enables the anti-shake movable part 21 to be frictionally coupled to the carrier extension arm 212 .
- the function of the friction plate 213 is to increase the frictional force between the anti-shake driving part 22 and the anti-shake movable part 21 .
- the carrier extension arm 212 has two U-shaped grooves respectively formed on opposite sides, wherein, in the anti-shake movable part 21 During the installation process, the anti-shake movable part 21 can be clamped by the U-shaped groove, which is convenient for installation.
- the anti-shake fixing part 23 includes an upper cover 231 and a base 232 that are engaged with each other, wherein the upper cover 231 and the base 232 A storage cavity is formed between them, and the storage cavity is used to accommodate the anti-shake movable part 21, the anti-shake drive part 22, the pre-pressure device 24, the guide device 25 and the drive substrate 26.
- the storage cavity is used to accommodate the anti-shake movable part 21, the anti-shake drive part 22, the pre-pressure device 24, the guide device 25 and the drive substrate 26.
- the upper cover 231 is sleeved above the base 232, and the upper cover 231 has an opening corresponding to the photosensitive component 30, so that the light reflected by the object can reach the photosensitive component 30 .
- the material of the upper cover 231 and the base 232 can be metal, such as cold-rolled carbon steel sheet (SPCC) or stainless steel and other magnetically conductive materials, which not only play a certain magnetically conductive role (that is, strengthen the magnetic field), but also can help for heat dissipation of the photosensitive element 30 .
- both the upper cover 231 and the base 232 are stators, that is, when the optical anti-shake function of the photosensitive assembly 30 is realized, the upper cover 231 and the base 232 remain still, wherein , the optical lens 10 is fixedly arranged on the upper cover 231 and is located on the photosensitive path of the photosensitive component 30 .
- the photosensitive assembly 30 is arranged in the placement groove of the anti-shake movable part 21, even the dust that enters through the gap of the anti-shake fixed part 23 will not enter the photosensitive part. The component 30 will not affect the imaging effect.
- the anti-shake fixed part 23 has a receiving cavity, and the anti-shake movable part 21 is suspended in the receiving cavity of the anti-shake fixed part 23 .
- the anti-shake fixing part 23 includes a base 232 and an upper cover 231 engaged with the base 232 , and the receiving cavity is formed between the upper cover 231 and the base 232 .
- the gap there is a gap between the bottom surface of the upper cover 231 and the top surface of the carrier extension arm 212 of the anti-shake movable part 21, and the gap can be used to accommodate the
- the guide device 25 is used to make the anti-shake movable part 21 support the upper cover 231 of the anti-shake fixed part 23 through the guide device 25 .
- the anti-shake driving part 22 is arranged between the anti-shake movable part 21 and the anti-shake fixed part 23 , preferably, The anti-shake driving part 22 is disposed between the carrier extension arm 212 of the anti-shake movable part 21 and the base 232 of the anti-shake fixing part 23 .
- the anti-shake driving part 22 is installed on the anti-shake fixed part 23, it is in frictional contact with the anti-shake movable part 21, so as to drive the anti-shake movable part through the anti-shake driving part 22 21 translates in the direction of the X-axis and the direction of the Y-axis and/or rotates around the direction of the Z-axis.
- the anti-shake driving part 22 is arranged on the side of the carrier body 211 of the anti-shake movable part 21, that is, the anti-shake driving part 22 is arranged on the The receiving space formed by the carrier extension arm 212 and the base 232 can avoid increasing the height of the anti-shake driving assembly 20 .
- the anti-shake driving part 22 includes a first piezoelectric actuator 221 and a second piezoelectric actuator 222, and the first piezoelectric actuator 221 and the second piezoelectric actuator
- the piezoelectric actuators 222 are respectively disposed on opposite sides of the anti-shake driving assembly 20 .
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are arranged on opposite sides of the photosensitive element 30 parallel to each other, and the first piezoelectric actuator A piezoelectric actuator 221 and the second piezoelectric actuator 222 are adapted to move the anti-shake movable part 21 and the photosensitive assembly 30 in the XOY plane set by the X axis and the Y axis or Rotate in the XOY plane about a Z-axis perpendicular to the X-axis and the Y-axis.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 have the same height, so that the anti-shake movable part 21 is disposed on the anti-shake driving part 22 without inclination , that is, the anti-shake movable part 21 is stably supported on the first piezoelectric actuator 221 and the second piezoelectric actuator 222 .
- the height dimensions of the first piezoelectric actuator 221 and the second piezoelectric actuator 222 must not be unequal, but preferably, the first piezoelectric actuator
- the mounting surface formed by the actuator 221 and the second piezoelectric actuator 222 is always a flat surface, so that the anti-shake movable part 21 can be stably supported by the first piezoelectric actuator 221 and the mounting surface formed by the second piezoelectric actuator 222.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are arranged relatively parallel to the X-axis or the Y-axis, that is, the first The piezoelectric actuator 221 and the second piezoelectric actuator 222 are symmetrically arranged on opposite sides of the photosensitive assembly 30 with respect to the photosensitive assembly 30 with the X-axis or the Y-axis as a symmetrical axis .
- the carrier extension arm 212 extends outward from the carrier body 211 , so an accommodating space is formed between the carrier extension arm 212 and the base 232 , and the first The piezoelectric actuator 221 and the second piezoelectric actuator 222 are respectively arranged in the accommodating space, and the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are fixed on the The base 232 is frictionally coupled to the friction plate 213 disposed on the lower surface of the carrier extension arm 212 along the height direction.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are implemented as the same piezoelectric actuator.
- the piezoelectric actuator is a traveling-wave piezoelectric actuator, and the traveling-wave piezoelectric actuator has nanometer-level step precision, and can achieve more extreme Optical system requirements.
- the thrust of the piezoelectric actuator is 10 times greater than that of a general VCM motor (Voice coil Motor, voice coil motor). Compared with a general VCM motor, the piezoelectric actuator does not need to use coil magnets and other components. Electromagnetic interference is avoided, reducing reliability risks.
- the piezoelectric actuator is a cuboid structure, that is, on the XOY plane, the cross section of the piezoelectric actuator is a rectangular structure, including two long sides along the length direction and two short sides along the width direction .
- the piezoelectric actuator is arranged relatively parallel on both sides of the photosensitive assembly 30, that is, the first piezoelectric actuator 221 and the second piezoelectric actuator
- the actuator 222 is disposed on the anti-shake fixing part 23 relatively parallel to the X-axis or the Y-axis as a symmetrical axis.
- the piezoelectric actuator includes a piezoelectric ceramic plate 223 and a friction drive part 224.
- the piezoelectric ceramic of the piezoelectric actuator The plate 223 produces two types of surface changes, thereby driving the friction driving part 224 to produce a unidirectional yaw reciprocating motion along the X-axis direction and/or the Y-axis direction, due to the friction between the friction driving part 224 and the friction plate 213 The frictional contact further drives the friction plate 213 to move.
- the piezoelectric ceramic plate 223 when the piezoelectric actuator is excited by a power source, the piezoelectric ceramic plate 223 will produce a wave-like movement along its length direction, and the friction part will move along its length under the drive of the piezoelectric ceramic plate. The direction of the yaw movement occurs, thereby driving the friction plate 213 to move along the length direction of the piezoelectric actuator; when the piezoelectric actuator is excited by another power source, the piezoelectric ceramic plate 223 will A serpentine motion is generated along its width direction, and the friction part is driven to yaw along its width direction, thereby driving the friction plate 213 to move along the width direction of the piezoelectric actuator.
- the piezoelectric actuator can respectively realize the surface shape change along its length direction or width direction, that is, the piezoelectric actuator can be selected along its length direction or along its width Face shape change in direction.
- the piezoelectric actuator is arranged along the X-axis direction, its length direction is along the X-axis direction, and its width direction is along the Y-axis direction; when the piezoelectric actuator is arranged along the Y-axis direction, its length direction is along the Y-axis direction.
- the Y-axis direction and the width direction are along the X-axis direction.
- the piezoelectric actuator in this application can generate different waveforms to move in the X and Y directions, and utilize the first piezoelectric actuator 221 and the second piezoelectric actuator 221 The cooperation of the two piezoelectric actuators 222 can also achieve Z-axis rotation.
- the piezoelectric actuator of the present application has a height of 0.7 mm to 0.9 mm, and can be hidden in the anti-shake driving assembly 20 to reduce the height of the anti-shake driving assembly 20 .
- the anti-shake function reduces the number of the anti-shake movable parts 21, which not only simplifies the structure of the camera module, but also helps reduce the height of the camera module.
- the first piezoelectric actuator 221 includes a first piezoelectric ceramic plate 2211 and a first friction driving part 2212 .
- the first piezoelectric ceramic plate 2211 is composed of very small piezoelectric ceramics. After the first piezoelectric ceramic plate 2211 is supplied with power excitation, through the inverse piezoelectric effect of the first piezoelectric ceramic plate 2211, The first piezoelectric ceramic plate 2211 is suitable for deformation, so that the first friction driving part 2212 on the first piezoelectric ceramic plate 2211 moves accordingly.
- the first piezoelectric ceramic plate 2211 is fixedly arranged on the base 232, and the first friction driving part 2212 faces the friction plate 213 on the anti-shake movable part 21, and the The frictional contact between the first friction driving part 2212 and the friction plate 213 is maintained, so that the first friction driving part 2212 can drive the friction plate 213 to move.
- the first friction driving part 2212 is located below the friction plate 213 and is in frictional contact with the friction plate 213 .
- the first friction driving part 2212 in the initial state, is located in the middle of the friction plate 213, and the friction plate 213 can move in the X-axis direction and the Y-axis direction under the drive of the anti-shake driving part 22. translation in the direction and/or rotation around the Z axis.
- the first friction driving part 2212 in the initial state, may also be located at other positions of the friction plate 213, for example, at the end of the friction plate 213, for this , is not limited by this application.
- the area of the friction plate 213 is greater than or equal to the driving stroke of the first piezoelectric actuator 221 .
- the second piezoelectric actuator 222 includes a second piezoelectric ceramic plate 2221 and a second friction driving part 2222 .
- the second piezoelectric ceramic plate 2221 is composed of very small piezoelectric ceramics. After the second piezoelectric ceramic plate 2221 is supplied with power excitation, through the inverse piezoelectric effect of the second piezoelectric ceramic plate 2221, The second piezoelectric ceramic plate 2221 is suitable for deformation, so that the second friction driving part 2222 on the second piezoelectric ceramic plate 2221 moves accordingly.
- the second piezoelectric ceramic plate 2221 is fixedly arranged on the base 232, and the second friction driving part 2222 faces the friction plate 213 on the anti-shake movable part 21, and the The friction contact between the second friction driving part 2222 and the friction plate 213 is maintained, so that the second friction driving part 2222 can drive the friction plate 213 to move.
- the second friction driving part 2222 is located below the friction plate 213 and is in frictional contact with the friction plate 213 .
- the second friction driving part 2222 in the initial state, is located in the middle of the friction plate 213, and the friction plate 213 can be driven by the anti-shake driving part 22 in the X-axis direction and the Y-axis translation in the direction and/or rotation around the Z axis.
- the second friction driving part 2222 in the initial state, may also be located at other positions of the friction plate 213, for example, at the end of the friction plate 213, and Not limited by this application. More preferably, the area of the friction plate 213 is greater than or equal to the driving stroke of the first piezoelectric actuator 221 .
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are arranged relatively parallel to the X-axis direction, that is, the first piezoelectric actuator
- the length direction of the actuator 221 and the second piezoelectric actuator 222 is along the X-axis direction
- the width direction of the first piezoelectric actuator 221 and the second piezoelectric actuator 222 is along the Y-axis direction.
- the first piezoelectric actuator 221 produces deformation along the length direction
- the second piezoelectric actuator 222 produces deformation along the length direction
- the anti-shake movable part 21 is driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222 to move along the X-axis direction.
- the first piezoelectric actuator 221 produces deformation along the width direction
- the second piezoelectric actuator 222 produces deformation along the width direction
- the anti-shake movable part 21 Driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222 together, it moves along the Y-axis direction.
- the first piezoelectric actuator 221 produces deformation along the length direction
- the second piezoelectric actuator 222 produces deformation in the opposite direction along the length direction (ie, the +X direction and ⁇ X directions)
- the anti-shake movable part 21 realizes the rotational movement around the Z axis when the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are driven. That is to say, in this application, the first piezoelectric actuator 221 and the second piezoelectric actuator 222 can cooperate with each other to drive the anti-shake movable part 21 in the X-axis direction and the Y-axis direction. direction and/or rotate around the Z-axis direction, so as to realize the translation anti-shake and/or rotation anti-shake of the photosensitive assembly 30 .
- first piezoelectric actuator 221 and the second piezoelectric actuator 222 can produce deformation along the length direction and width direction, only one of the piezoelectric actuators
- the movable part 21 can be driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222 to realize translational anti-shake in the XOY plane and rotation anti-shake around the Z-axis direction.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 first generate deformation along the length direction and then generate deformation along the width direction, and the anti-shake can Driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222, the moving part 21 first moves along the X-axis direction, and then moves along the Y-axis direction. In this way, the The anti-shake movable part 21 can move in the plane where XOY is located.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 can generate deformation in the width or length direction to provide driving force in two directions, but
- the driving force provided by the first piezoelectric actuator 221 and the second piezoelectric actuator 222 is limited to the length direction and the width direction, that is, only to the X-axis direction and the Y-axis direction, therefore, when required
- driving the photosensitive assembly 30 along a certain inclined direction for optical image stabilization it must first move along the X-axis direction, and then move along the Y-axis direction (of course, it can also be moved along the Y-axis direction first).
- the Y-axis direction moves, and then moves along the X-axis direction) instead of moving directly along the inclined direction, which is also an important difference from the traditional VCM motor for anti-shake.
- the first piezoelectric actuator 221 produces deformation along the first direction of the X-axis direction (for example, the positive direction of the X-axis direction), and the second piezoelectric actuator 222 produces deformation along the first direction of the X-axis direction.
- the deformation in the second direction of the X-axis direction (for example, the negative direction of the X-axis direction), that is, the first friction driving part 2212 generates a driving force in the positive direction of the X-axis direction, and the second friction driving part 2212 generates a driving force along the positive direction of the X-axis direction.
- the part 2222 generates a driving force in the negative direction along the X-axis direction.
- the anti-shake movable part 21 and the photosensitive assembly 30 are connected between the first piezoelectric actuator 221 and the second piezoelectric actuator 222.
- the drive realizes the rotational motion around the Z axis.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 first generate deformation along the width direction, and then generate deformation along the length direction, and the anti-shake movable Driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222, the part 21 first moves along the Y-axis direction, and then moves along the X-axis direction, so that the anti-shake can be
- the moving part 21 can move in the plane where XOY exists.
- the first piezoelectric actuator 221 produces deformation along the first direction of the X-axis direction (for example, the positive direction of the X-axis direction), and the second piezoelectric actuator 222 produces deformation along the X-axis direction.
- the second direction for example, the negative direction of the X-axis direction
- the first friction driving part 2212 generates a driving force along the positive direction of the X-axis direction
- the second friction driving part 2222 generates The driving force along the negative direction of the X-axis direction, so that the anti-shake movable part 21 and the photosensitive assembly 30 are driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222 to achieve Rotational movement around the Z axis.
- the first piezoelectric actuator 221 is adapted to deform along the direction set by the X-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 move along the direction set by the X-axis
- the second piezoelectric actuator 222 is adapted to deform along the direction set by the X-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 to move along the direction set by the X-axis, so as to actuate the anti-shake movable The part 21 and the photosensitive assembly 30 move along the direction set by the X-axis.
- the first piezoelectric actuator 221 is adapted to deform along the direction set by the Y-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 set along the Y-axis.
- the second piezoelectric actuator 222 is adapted to deform along the direction set by the Y-axis to move the anti-shake movable part 21 and the photosensitive element 30 along the set direction. The direction set by the Y-axis is moved, so that the anti-shake movable part 21 and the photosensitive element 30 are moved along the Move in the direction set by the Y axis.
- the first piezoelectric actuator 221 is adapted to deform along the first direction set by the X-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 along the X-axis.
- the set first direction moves
- the second piezoelectric actuator 222 is adapted to deform along the second direction opposite to the first direction set by the X-axis to actuate the
- the anti-shake movable part 21 and the photosensitive assembly 30 move along the second direction set by the X axis, so as to pass through the first piezoelectric actuator 221 and the second piezoelectric actuator 222
- the photosensitive assembly 30 is actuated to rotate around the Z axis in the XOY plane.
- the first piezoelectric actuator 221 is adapted to deform along the first direction set by the Y-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 along the Y axis.
- the second piezoelectric actuator 222 is adapted to deform along the second direction opposite to the first direction set by the Y axis to actuate the
- the anti-shake movable part 21 and the photosensitive assembly 30 move along the second direction set by the Y axis, so as to pass through the first piezoelectric actuator 221 and the second piezoelectric actuator 222 actuate the photosensitive assembly 30 to rotate around the Z axis in the XOY plane.
- the anti-shake movable part 21 can first realize the translation anti-shake of the XOY plane, and then realize the rotation anti-shake around the Z-axis direction; it can also first realize the rotation around the Z-axis direction Anti-shake, and then realize the translation anti-shake of the XOY plane.
- the anti-shake driving part 22 is arranged below the anti-shake movable part 21 along the height direction, specifically, the first piezoelectric ceramic plate 2211 is arranged on the The anti-shake fixed part 23, the first friction driving part 2212 is frictionally coupled to the anti-shake movable part 21, and the second piezoelectric ceramic plate 2221 is provided on the anti-shake fixed part 23, so The second friction driving part 2222 is frictionally coupled to the anti-shake movable part 21 .
- the pre-pressure device 24 is clamped and fixed between the first piezoelectric ceramic plate 2211 and the base 232 and between the second piezoelectric ceramic plate 2221 and the base 232, so as to pass through the The pre-pressure provided by the pre-pressure device 24 keeps the first friction driving part 2212 and the second friction driving part 2222 in frictional contact with the friction plate 213 of the carrier extension arm 212 .
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 can form a self-locking structure, that is, after the application of voltage is stopped, the first piezoelectric actuator 221 and the second piezoelectric actuator
- the two piezoelectric actuators 222 keep the anti-shake movable part 21 at the current position under the action of the pre-pressure device 24, without changing the position due to external shaking, so that the camera module The optical system of the group remains unchanged, thereby avoiding the impact on the imaging effect. It also omits the addition of a self-locking device in the camera module, which relatively reduces the size of the camera module. Due to the self-locking structure formed by the first piezoelectric actuator 221 and the second piezoelectric actuator 222, there is no need to keep the piezoelectric actuator activated to maintain its position.
- the pre-pressure device 24 provides a pre-pressure between the anti-shake driving part 22 and the anti-shake movable part 21, so that The friction driving part 224 of the anti-shake driving part 22 can be frictionally coupled to the anti-shake movable part 21 to drive the anti-shake movable part 21 to move along the driving direction through friction.
- the pre-pressure device 24 includes a first elastic element 241 and a second elastic element 242 .
- the first elastic element 241 is disposed between the first piezoelectric ceramic plate 2211 of the first piezoelectric actuator 221 and the base 232 to provide the first elastic element 241 with elastic force.
- a piezoelectric actuator 221 is sandwiched between the carrier extension arm 212 of the anti-shake movable part 21 and the base 232 of the anti-shake fixed part 23, that is, the first piezoelectric actuator
- the first friction driving part 2212 of the actuator 221 interferes with the carrier extension arm 212 of the anti-shake movable part 21.
- the first piezoelectric actuator 221 is frictionally coupled to the anti-shake Movable part 21.
- the second elastic element 242 is disposed between the second piezoelectric ceramic plate 2221 of the second piezoelectric actuator 222 and the base 232 to provide the first elastic force of the second elastic element 242.
- Two piezoelectric actuators 222 are sandwiched between the carrier extension arm 212 of the anti-shake movable part 21 and the base 232 of the anti-shake fixed part 23, that is, the second piezoelectric actuator
- the second friction driving part 2222 of the actuator 222 interferes with the carrier extension arm 212 of the anti-shake movable part 21. In this way, the second piezoelectric actuator 222 is frictionally coupled to the anti-shake Movable part 21.
- the pre-pressure device 24 is implemented as an elastic adhesive, that is, the first elastic element 241 and the second elastic element 242 are implemented as an elastic glue after curing. .
- the inner bottom surface of the base 232 and the first piezoelectric ceramic plate 2211 and between the inner bottom surface of the base 232 and the second piezoelectric ceramic plate 2221 are respectively applied.
- a layer of adhesive with a thickness of 10 um to 50 um is used to form the first elastic element 241 and the second elastic element 242 after the adhesive is cured and formed. That is, the first elastic element 241 and the second elastic element 242 of the preloading device 24 can also make the anti-shake driving part 22 be fixed on the inner side wall of the base 232 while providing the preloading force. the underside.
- the pre-pressure device 24 has a relatively high flatness, that is, when the adhesive is applied to form the first elastic element 241 and the second elastic element 242, the applied The adhesive has relatively high flatness and uniformity, so that the anti-shake driving part 22 can be fixed on the base 232 evenly, thereby improving the stability of the anti-shake driving part 22 .
- the first elastic element 241 and the second elastic element 242 of the preloading device 24 can also be implemented as elastic rubber due to its material properties, or a spring with elasticity due to its shape. ; It can also be a viscous elastic material, such as an adhesive (silicone, UV glue, thermosetting glue, UV thermosetting glue, etc.).
- the pre-pressure device 24 is arranged on the base 232, and the pre-pressure device 24 generates a pre-pressure upward along the Z-axis direction, and the pre-pressure can maintain the anti-shake
- the friction driving part 224 of the driving part 22 is in frictional contact with the friction plate 213 of the anti-shake movable part 21, and the preload can also keep the guide device 25 clamped between the upper cover 231 and the upper cover 231. Between the carrier extension arms 212 of the anti-shake movable part 21 , wherein the direction of the preload is perpendicular to the direction of the driving force.
- a guide device is provided between the upper cover 231 and the anti-shake movable part 21 25, in order to make the anti-shake movable part 21 always support the anti-shake movable part 21 during the process of moving relative to the anti-shake fixed part 23 during optical anti-shake, so that it can slide smoothly .
- the anti-shake drive assembly 20 further includes a guide device 25 disposed between the upper surface of the carrier extension arm 212 and the upper cover 231, and the guide device 25 It is suitable for guiding the anti-shake movable part 21 to move in the XOY plane set by the X axis and the Y axis.
- the guide device 25 includes a groove 241 arranged in the anti-shake movable part 21 and a ball 242 arranged in the groove 241, wherein, as mentioned above, Under the action of the preloading device 24, the guide device 25 can always be kept with the anti-shake movable part 21 during the movement of the anti-shake movable part 21 relative to the anti-shake fixed part 23. Contact and guide the movement of the anti-shake movable part 21 so that the anti-shake movable part 21 can move smoothly. It should be understood that since the ball 242 is placed in the groove 241, the trajectory of the ball 242 is limited in the groove 241, and the ball 242 can move along the direction perpendicular to the optical axis in the groove 241. to move in the plane to provide guidance for the movement of the anti-shake movable part 21 .
- the groove 241 is formed in a concave manner on the carrier extension arm 212 of the anti-shake movable part 21 , and the opening of the groove 241 faces to the side of the anti-shake fixed part 23 .
- the ball 242 is made of ceramic material.
- the depth of the groove 241 is less than or equal to the diameter of the ball 242, so that at least a part of the ball 242 can be exposed on the top surface of the groove 241, so that the The ball 242 can be in frictional contact with the carrier extension arm 212 of the anti-shake movable part 21 .
- the number of the guide devices 25 is at least three, that is, the anti-shake driving assembly 20 includes at least three guide devices 25 .
- the number of the guide devices 25 is four, which can be respectively located at the four corners of the anti-shake driving assembly 20 to provide stable support for the anti-shake movable part 21, And the spare corner space of the anti-shake driving assembly 20 can be fully utilized, so that the structure of the anti-shake driving assembly 20 is more compact.
- the guide device 25 may also be a slider-chute structure, which is not limited in the present application.
- a track with a direction may also be set between the upper cover 231 and the upper surface of the anti-shake movable part 21, and the ball 242 is set in the track, The trajectory of the ball 242 is limited within the track, so it can play a guiding role during the movement of the photosensitive assembly 30 .
- the ball 242 can replace sliding friction with rolling friction, the frictional force between the anti-shake movable part 21 and the upper cover 231 can be further reduced.
- a track along the x-axis direction can be set on the bottom surface of the upper cover 231, and a track along the y-axis direction can be set on the upper surface of the carrier extension arm 212 (bottom surface and The upper surface refers to the direction along the optical axis, from the photosensitive chip 32 to the optical lens 10), and the track in the x direction is opposite to the track in the y direction to form a "cross"-shaped accommodation cavity, in which the ball 242 is accommodated.
- the number of the balls 242 and the accommodation chambers is four, so that the anti-shake movable part 21 can be kept stable.
- a larger OIS stroke can be provided for the photosensitive assembly 30 by using the ball 242 and the track as a guiding mechanism.
- a track along the x-axis direction and a track along the y-axis direction may also be set on the upper surface of the carrier extension arm 212, and two tracks on the same side are set on the carrier extension arm 212. The same side of the arm 212.
- a track with a direction different from that on the upper surface of the carrier extension arm 212 is provided, that is, on the upper cover 231, it is at a position opposite to the track in the x-axis direction on the carrier extension arm 212
- a track in the y-axis direction is set, and a track in the x-axis direction is set on the upper cover 231 opposite to the track in the y-axis direction of the carrier extension arm 212 to avoid interference.
- the guide device 25 is arranged between the anti-shake movable part 21 and the upper cover 231, and the anti-shake drive part 22 is arranged between the anti-shake movable part 21 and the upper cover 231.
- the guide device 25 is arranged above the anti-shake movable part 21, and the anti-shake drive part 22 is arranged below the anti-shake movable part 21, that is to say, The anti-shake movable part 21 is clamped by the guide device 25 and the anti-shake driving part 22 in the accommodation space formed by the upper cover 231 and the base 232 .
- the ball 242 of the guide device 25 is clamped between the anti-shake movable part 21 and the upper cover 231 of the anti-shake fixed part 23, therefore The ball 242 can also provide a pre-pressure to make the anti-shake movable part 21 go down so that the anti-shake movable part 21 is frictionally coupled to the anti-shake driving part 22 . That is, in the embodiment of the present application, the ball 242 of the guiding device 25 also plays the role of the pre-pressing device 24 in essence. That is to say, the ball 242 can serve as the guide device 25 to provide support for the anti-shake movable part 21 , and can also serve as the pre-pressure device 24 to provide the required pre-pressure for the anti-shake driving part 22 .
- the first piezoelectric ceramic plate 2211 and the second piezoelectric ceramic plate 2221 are respectively fixed on the inner bottom surface of the base 232 relatively in parallel, and the first friction drives
- the part 2212 and the second friction driving part 2222 are fixed on the first piezoelectric ceramic plate 2211 and the second piezoelectric ceramic plate 2221 and face the anti-shake movable part 21, and are connected with the anti-shake movable
- the friction plate 213 of the portion 21 remains in frictional contact. That is, along the height direction, the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are respectively arranged under the anti-shake movable part 21, and the ball 242 is arranged on the anti-shake movable part 21.
- the ball 242 is disposed above the anti-shake movable part 21 . That is to say, the order of the setting module from top to bottom along the Z-axis is the upper cover 231, the ball 242, the anti-shake movable part 21, the first piezoelectric actuator 221 and the second piezoelectric actuator.
- the ball 242 can generate downward pre-pressure, through which the first piezoelectric actuator 221 and the second piezoelectric actuator 222 can be kept in frictional contact with the friction plate 213 of the anti-shake movable part 21 .
- first friction driving part 2212 and the second friction driving part 2222 are in frictional contact with the opposite sides of the carrier extension arm 212 respectively, and the balls 242 are respectively in contact with the upper cover 231 and the carrier extension arm 212
- the four corners of the friction contact, the friction between the friction driving part and the friction plate 213 is active friction, the friction between the ball 242 and the upper cover 231 is passive friction, and the first friction driving part 2212 ,
- the friction force between the second friction driving part 2222 and the friction plate 213 of the carrier extension arm 212 is greater than the friction force between the ball 242 and the upper cover 231 .
- the driving substrate 26 is disposed between the anti-shake driving part 22 and the base 232 .
- a set of positioning points 2321 is provided on the bottom surface of the base 232 , and the driving substrate 26 is fixed on the base 232 through the positioning points 2321 of the base 232 .
- the driving substrate 26 includes a connection terminal 263 and at least one conductive terminal.
- the conductive end has a split structure and the number of the conductive ends is two, that is, the at least one conductive end includes a first conductive end 261 and a second conductive end 262 .
- the first piezoelectric ceramic plate 2211 of the first piezoelectric actuator 221 and the second piezoelectric ceramic plate 2221 of the second piezoelectric actuator 222 are respectively provided and electrically connected to the on the first conductive end 261 and the second conductive end 262 of the driving substrate 26, so that the first piezoelectric actuator 221 and the second piezoelectric actuator 222 pass through the driving substrate 26 achieve circuit conduction.
- the first conductive end 261 is disposed on the same side as the first piezoelectric actuator 221
- the second conductive end 262 is disposed on the same side as the second piezoelectric actuator 222
- the connecting end 263 is arranged on the side of the anti-shake drive assembly 20 where the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are not arranged, for example, the connecting end 263 is arranged on the side of the Between the first conductive end 261 and the second conductive end 262, and the connecting end 263 is electrically connected to the first conductive end 261 and the second conductive end 262, and the connecting end 263 connects the The first conductive end 261 and the second conductive end 262 realize circuit conduction with the main board of the electronic device.
- the driving substrate 26 and the circuit board 31 are respectively fixedly connected to the main board of the electronic device to achieve circuit conduction, so as to reduce the resistance of the driving substrate 26 to the movement of the circuit board 31 .
- the driving substrate 26 may be arranged between the base 232 and the pre-pressure device 24, and the driving substrate 26 may also be arranged between the pre-pressure device 24 and the pre-pressure device 24. Between the anti-shake drive unit 22 . That is to say, the driving substrate 26 can be directly disposed on the base 232 , or indirectly disposed on the base 232 through the pre-pressing device 24 .
- the base 232 has a slot formed on its side wall, and the connecting end 263 protrudes through the slot, and realizes the circuit conduction with the main board of the electronic device.
- the circuit board 31 and the connecting end 263 extend from the same side of the anti-shake driving assembly 20, that is, the slot of the base 232 and the opening of the anti-shake movable part 21 are set on the same side , so that the circuit board 31 and the connection end 263 are electrically connected to the main board of the electronic device from the same side of the anti-shake driving assembly 20 .
- the anti-shake movable part 21 is disposed above the base 232, the circuit board 31 is disposed above the driving substrate 26, and the connection end 263 between the circuit board 31 and the driving substrate 26 is along the height direction. There is a certain gap, and the gap can prevent the circuit board 31 from contacting the driving substrate 26 during the moving process, thereby affecting the effect of optical anti-shake.
- the range of the gap is 0.1mm-0.15mm.
- the drive substrate 26 and the circuit board 31 can also be extended from different sides of the anti-shake drive assembly 20 to be electrically connected to the main board of the electronic device, that is, the base 232 and the
- the openings of the side walls of the anti-shake movable part 21 may be disposed on different sides, such as opposite sides or adjacent sides, so that the movement of the circuit board 31 will not be affected.
- the positions of the anti-shake driving part 22 and the guide device 25 can also be exchanged, that is, the anti-shake driving part 22 is arranged on the upper cover 231 and the anti-shake Between the movable part 21 , the guiding device 25 is disposed between the base 232 and the anti-shake movable part 21 .
- the guide device 25 is disposed between the base 232 and the anti-shake movable part 21, the guide device 25 is disposed below the carrier extension arm 212, and on the carrier extension arm 212
- a groove 241 is provided with an opening facing the base 232 , the ball 242 is disposed in the groove 241 , and the anti-shake movable part 21 is carried on the base 232 by the ball 242 .
- the carrier extension arm 212 is clamped between the ball 242 and the friction driving part, so that the anti-shake movable part 21 can realize XOY plane anti-shake and Stabilize around the Z axis.
- the driving substrate 26 is arranged between the upper cover 231 and the piezoelectric ceramic board, and is used to realize the circuit conduction between the anti-shake driving part 22 and the main board of the electronic equipment.
- FIG. 15 illustrates a modified embodiment of the anti-shake driving assembly 20 according to the embodiment of the present application, wherein, as shown in FIG. 15 , the difference from the above embodiment is that the first piezoelectric actuator 221
- the second piezoelectric actuator 222 can also be arranged relatively parallel to the Y-axis direction, that is, the length direction of the first piezoelectric actuator 221 and the second piezoelectric actuator 222 is along the Y-axis direction , that is, the width direction of the first piezoelectric actuator 221 and the second piezoelectric actuator 222 is along the Y-axis direction.
- the first piezoelectric actuator 221 produces deformation along the length direction
- the second piezoelectric actuator 222 produces deformation along the length direction
- the anti-shake movable part 21 Driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222, it moves along the Y-axis direction
- the first piezoelectric actuator 221 generates Deformation along the width direction
- the second piezoelectric actuator 222 produces deformation along the width direction
- the anti-shake movable part 21 is connected between the first piezoelectric actuator 221 and the second piezoelectric actuator 222 to move along the X-axis direction
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 first generate deformation along the length direction, and then generate deformation along the Deformation in the width direction
- the anti-shake movable part 21 is driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222 to move
- the drive of 222 realizes the rotational movement around the Z axis. That is to say, in this application, the first piezoelectric actuator 221 and the second piezoelectric actuator 222 can cooperate with each other to drive the anti-shake movable part 21 in the X-axis direction and the Y-axis direction. direction and/or rotate around the Z-axis direction, so as to realize the translation anti-shake and/or rotation anti-shake of the photosensitive assembly 30 .
- the camera module based on the embodiment of the present application is clarified, wherein the camera module adopts a new type of piezoelectric actuator as a driving element to not only provide a sufficient driving force, but also provide precision Higher and longer drive performance to meet the optical performance adjustment requirements of the camera module, for example, optical image stabilization requirements.
- an anti-shake driving assembly which includes: an anti-shake fixed part 23, an anti-shake movable part 21 and an anti-shake driving part 22, wherein the anti-shake movable part 21 It is suitable for installing the photosensitive assembly 30 thereon, and the anti-shake driving part 22 includes a first piezoelectric actuator 221 and a second piezoelectric actuator frictionally coupled to the anti-shake movable part 21 222.
- first piezoelectric actuator 221 and the second piezoelectric actuator 222 are arranged on opposite sides of the photosensitive element 30 parallel to each other, and the first piezoelectric actuator 221 And the second piezoelectric actuator 222 is suitable for actuating the anti-shake movable part 21 and the photosensitive assembly 30 to move in the XOY plane set by the X axis and the Y axis or around the plane perpendicular to the X axis.
- axis and the Z axis of the Y axis rotate in the XOY plane.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are relative to the photosensitive assembly 30 at the X-axis or
- the Y axis is a symmetrical axis and is symmetrically arranged on two opposite sides of the photosensitive assembly 30 .
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are traveling wave piezoelectric actuators, wherein, The first piezoelectric actuator 221 includes a first piezoelectric ceramic plate 2211 and a first friction driving part 2212 protruding from the first piezoelectric ceramic plate 2211, and the first piezoelectric ceramic plate 2211 is suitable for After being electrically driven, it is deformed to drive the first friction driving part 2212 to perform unidirectional yaw reciprocating motion; wherein, the second piezoelectric actuator 222 includes a second piezoelectric ceramic plate 2221 and protrudes from the first piezoelectric ceramic plate 2221 The second friction driving part 2222 of the two piezoelectric ceramic plates 2221, the second piezoelectric ceramic plate 2221 is adapted to be deformed after being electrically driven to drive the second friction driving part 2222 to perform unidirectional yaw reciprocating motion.
- the first piezoelectric actuator 221 is adapted to deform along the direction set by the X-axis to actuate the anti-shake movable
- the part 21 and the photosensitive element 30 move along the direction set by the X-axis
- the second piezoelectric actuator 222 is adapted to deform along the direction set by the X-axis to actuate the
- the anti-shake movable part 21 and the photosensitive assembly 30 move along the direction set by the X axis, so as to be operated by the first piezoelectric actuator 221 and the second piezoelectric actuator 222.
- the first piezoelectric actuator 221 is adapted to deform along the direction set by the Y-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 set along the Y-axis.
- the second piezoelectric actuator 222 is adapted to deform along the direction set by the Y-axis to move the anti-shake movable part 21 and the photosensitive element 30 along the set direction.
- the direction set by the Y-axis is moved, so that the anti-shake movable part 21 and the photosensitive element 30 are moved along the moving in the direction set by the Y-axis;
- the first piezoelectric actuator 221 is adapted to deform along the first direction set by the X-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 along the X-axis.
- the set first direction moves
- the second piezoelectric actuator 222 is adapted to deform along the second direction opposite to the first direction set by the X-axis to actuate the
- the anti-shake movable part 21 and the photosensitive assembly 30 move along the second direction set by the X axis, so as to pass through the first piezoelectric actuator 221 and the second piezoelectric actuator 222 Actuating the photosensitive assembly 30 to rotate around the Z axis in the XOY plane;
- the first piezoelectric actuator 221 is adapted to deform along the first direction set by the Y-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 along the Y-axis.
- the set first direction moves
- the second piezoelectric actuator 222 is adapted to deform along the Y-axis set in a second direction opposite to the first direction to actuate the
- the anti-shake movable part 21 and the photosensitive assembly 30 move along the second direction set by the Y axis, so as to pass through the first piezoelectric actuator 221 and the second piezoelectric actuator 222
- the photosensitive assembly 30 is actuated to rotate around the Z axis in the XOY plane.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 have a rectangular structure with two The bar has opposite long sides and two opposite short sides along the width.
- the length direction of the first piezoelectric actuator 221 and the second piezoelectric actuator 222 is the X-axis direction
- the The short-side direction of the first piezoelectric actuator 221 and the second piezoelectric actuator 222 is the Y-axis direction.
- the length direction of the first piezoelectric actuator 221 and the second piezoelectric actuator 222 is the Y-axis direction
- the The short-side direction of the first piezoelectric actuator 221 and the second piezoelectric actuator 222 is the X-axis direction.
- the anti-shake movable part 21 is stably supported by the first friction driving part 2212 of the first piezoelectric actuator 221 and the on the second friction driving part 2222 of the second piezoelectric actuator 222 .
- the first piezoelectric ceramic plate 2211 is disposed on the anti-shake fixing part 23, and the first friction driving part 2212 is frictionally coupled to the
- the anti-shake movable part 21 and the second piezoelectric ceramic plate 2221 are arranged on the anti-shake fixed part 23, and the second friction driving part 2222 is frictionally coupled to the anti-shake movable part 21 .
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 have the same height dimension
- the height dimension of the first piezoelectric actuator 221 and the second piezoelectric actuator 222 is 0.7mm-0.9mm.
- the anti-shake fixed part 23 has a housing cavity, and the anti-shake movable part 21 is suspended in the housing cavity of the anti-shake fixed part 23 Inside.
- the anti-shake fixing part 23 includes a base 232 and an upper cover 231 that is fastened with the base 232, and the accommodating cavity is formed on the upper cover 231. between the cover 231 and the base 232 .
- the anti-shake driving assembly 20 in one example, there is a gap between the anti-shake movable part 21 and the base 232 , and there is a gap between the anti-shake movable part 21 and the upper cover 231 There is a gap between them, and in this way, the anti-shake movable part 21 is suspended in the accommodation cavity of the anti-shake fixed part 23 .
- the anti-shake movable part 21 includes a carrier body 211 and a carrier extension arm 212 extending outward from the carrier body 211, wherein the first The first friction driving part 2212 of a piezoelectric actuator 221 and the second friction driving part 2222 of the second piezoelectric actuator 222 are frictionally coupled to the lower surface of the carrier extension arm 212 .
- the carrier body 211 has a seating groove lower than the carrier extension arm 212, wherein the photosensitive component 30 is suitable for being installed in the seating groove .
- the anti-shake driving assembly 20 in an example, there is an accommodation space between the carrier extension arm 212 and the base 232, the first piezoelectric actuator 221 and the second piezoelectric actuator 221 The piezoelectric actuator 222 is accommodated in the accommodation space.
- the anti-shake movable part 21 further includes a friction plate 213 formed on the lower surface of the carrier extension arm 212, and the first piezoelectric actuator The first friction driving part 2212 of the actuator 221 and the second friction driving part 2222 of the second piezoelectric actuator 222 are frictionally coupled to the friction plate 213 .
- the anti-shake drive assembly 20 further includes a drive substrate 26 disposed between the anti-shake movable part 21 and the base 232, the The driving substrate 26 includes at least one conductive terminal and a connecting terminal 263 extending outward from the conductive terminal, the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are electrically connected to the at least one electrical terminal. Connection terminal 263 .
- the at least one conductive end includes a first conductive end 261 and a second conductive end 262, and the first piezoelectric actuator 221 is electrically connected to the The first conductive end 261, the second piezoelectric actuator 222 is electrically connected to the second conductive end 262.
- the anti-shake movable part 21 has a slot formed on the side wall of the carrier body 211, and the slot is configured to allow the photosensitive The circuit board 31 of the component 30 protrudes from the slot.
- the base 232 has an opening formed on its side wall, wherein the connection end 263 extends outward from the at least one conductive end and passes through the at least one conductive end. said opening.
- the opening and the slot have a height difference.
- the anti-shake driving assembly 20 further includes a pre-pressing device 24 disposed between the anti-shake driving part 22 and the anti-shake fixing part 23 , the anti-shake driving part 22 is forced to be frictionally coupled to the anti-shake movable part 21 by the pre-pressure provided by the pre-pressure device 24 .
- the pre-pressure device 24 includes a first piezoelectric ceramic plate 2211 disposed between the base 232 and the first piezoelectric actuator 221
- the first elastic element 241 between them is used to generate the pre-pressure by the elastic force of the first elastic element 241 itself to force the first friction driving part 2212 of the first piezoelectric actuator 221 to contact the friction plate 213, in such a way that the first friction driving part 2212 of the first piezoelectric actuator 221 is frictionally coupled to the friction plate 213;
- the pre-pressure device 24 also includes a The second elastic element 242 between the second piezoelectric ceramic plates 2221 of the second piezoelectric actuator 222 forces the second The second friction driving part 2222 of the piezoelectric actuator 222 is in contact with the friction plate 213, so that the second friction driving part 2222 of the second piezoelectric actuator 222 is frictionally coupled to the friction plate 213. friction plate 213 .
- the thickness of the first elastic element 241 and the second elastic element 242 is 10 um to 50 um.
- the anti-shake drive assembly 20 further includes a guide device 25 disposed between the upper surface of the carrier extension arm 212 and the upper cover 231 , the guide device 25 is adapted to guide the anti-shake movable part 21 to move in the XOY plane set by the X axis and the Y axis.
- the anti-shake driving assembly 20 based on the embodiment of the present application is clarified, which uses a special piezoelectric actuator as a driving element and only configures one anti-shake movable part 21 to realize the camera module in the XOY plane. Anti-shake inside.
- the camera module As shown in FIG. 21 to FIG. 36, the camera module according to the embodiment of the present application is illustrated, which includes a photosensitive component 30, an optical lens 10 held on the photosensitive path of the photosensitive component 30, and an optical lens 10 for driving the photosensitive component 30.
- the component 30 moves to realize the anti-shake driving component 20 for adjusting the optical performance of the camera module.
- the photosensitive component 30 is installed in the anti-shake driving component 20, for example, as shown in FIGS. 2110, the photosensitive assembly 30 is installed in the anti-shake driving assembly 20 in a manner of being accommodated in the placement groove 2110, so that when the anti-shake driving assembly 20 is driven, it can carry the photosensitive assembly 30 moves along a preset direction to realize the adjustment of the optical performance of the camera module, for example, perform optical anti-shake and the like.
- the optical lens 10 is kept on the photosensitive path of the photosensitive assembly 30, for example, the optical lens 10 is installed on the anti-shake in a manner of being fixed on the top surface of the anti-shake driving assembly 20 In the driving assembly 20, the optical lens 10 is held on the photosensitive path of the photosensitive assembly 30 in such a way that the photosensitive assembly 30 can receive the light projected from the optical lens 10 to form an image.
- the optical lens 10 includes a lens barrel 11 and a lens group installed in the lens barrel 11, wherein the lens group includes at least one optical lens 12, and
- the quantity of the at least one optical lens 12 is not limited.
- the optical lens 10 is fixedly arranged on the light-sensing path of the light-sensing assembly 30 in a manner of being directly arranged on the top surface of the anti-shake driving assembly 20 .
- the optical lens 10 can be placed on the top surface of the anti-shake driving assembly 20 through a mirror mount 13, wherein the mirror mount 13 has a through hole formed therein , the light refracted by the optical lens 10 can enter the photosensitive component 30 through the through hole.
- the optical lens 10 can be placed on the top surface of the anti-shake driving assembly 20 through a lens driving part 14, wherein the lens driving part 14 has a setting formed therein
- the optical lens 10 is installed in the installation space of the lens driving part 14, and the lens driving part 14 can drive the optical lens 10 to move to achieve optical focusing and/or optical anti-shake functions.
- the lens driving part 14 may be a driving lens driving part 14 of a voice coil lens driving part 14, a piezoelectric lens driving part 14, an SMA (Shape Memory Alloy) lens driving part 14 or the like.
- the mirror holder 13 or the lens driving part 14 can directly accommodate a plurality of optical lenses 12 of the optical lens 10; in another example of the present application, the mirror A seat 13 or a lens driving portion 14 can accommodate the lens barrel 11 of the optical lens 10 and the plurality of optical lenses 12 provided in the lens barrel 11 .
- the lens driving part 14 also includes a lens focusing part, and the lens focusing part is suitable for driving the translation of the optical lens 10 in the Z-axis direction to adjust the The distance between the optical lens 10 and the photosensitive assembly 30 realizes the focusing function of the optical lens 10 .
- the lens driving part 14 may also include a lens anti-shake part, and the lens anti-shake part is suitable for driving the optical lens 10 to translate and move in the X-axis and Y-axis directions.
- the lens driving part 14 may only include the lens focusing part or the lens anti-shake part; the lens driving part 14 may also include the lens focusing part and the lens anti-shake part at the same time, Therefore, the lens driving part 14 can realize not only the lens focusing function but also the lens anti-shake function.
- the photosensitive component 30 includes a circuit board 31 , a photosensitive chip 32 , an electronic component 33 , a base 34 and a filter component 35 .
- the photosensitive chip 32 is arranged on the circuit board 31 and electrically connected to the circuit board 31, for example, the photosensitive chip 32 is mounted on the circuit board 31 and electrically connected to the circuit board 31, wherein , the base 34 is arranged on the circuit board 31 and is located on the peripheral side of the photosensitive chip 32, and the filter element 35 is held on the photosensitive chip 32 by being mounted on the base 34. on the photosensitive path.
- the photosensitive chip 32 includes a photosensitive area and a non-photosensitive area surrounding the photosensitive area, wherein the photosensitive area is composed of a pixel array for receiving and sensing imaging light from the outside and converting optical signals into electrical signals.
- the photosensitive chip 32 is mounted on the upper surface of the circuit board 31 through an adhesive, and is electrically connected to the circuit board 31 by means of gold wires.
- the photosensitive chip 32 can also be arranged on the circuit board 31 in other ways and/or be electrically connected to the circuit board 31 in other ways, for example, by flip-chip bonding Attached to the lower surface of the circuit board 31 , this is not limited by the present application.
- the photosensitive path of the photosensitive chip 32 forms the photosensitive path of the photosensitive component 30 .
- the base 34 is disposed on the circuit board 31 to package the electronic components 33 on the circuit board 31 and to support other components.
- the base is implemented as a separately molded plastic bracket, which is attached to the surface of the circuit board 31 by an adhesive and used to support other components.
- the base can also be formed on the circuit board 31 in other ways, for example, the base is implemented as a molded base, which is integrally formed on the The preset position of the circuit board 31 is not limited by this application.
- the filter element 35 is held on the photosensitive path of the photosensitive chip 32 for filtering the imaging light entering the photosensitive chip 32 .
- the filter element 35 is installed on the base 34 and corresponds to at least the photosensitive area of the photosensitive chip 32, in this way, the filter element 35 is held on the On the photosensitive path of the photosensitive chip 32 .
- the filter element 35 can also be installed on the base 34 in other ways, for example, first set the filter element bracket on the base 34, and then place The filter element 35 is installed on the filter element holder, that is, in this example, the filter element 35 can be indirectly installed on the base 34 through other supports. And, in other examples of the present application, the filter element 35 can also be installed in other positions of the variable focus camera module, for example, the filter element 35 is formed in the optical lens 10 (for example , as a layer of filter film attached to the surface of a certain optical lens of the zoom lens group), which is not limited by the present application.
- existing driving elements for driving optical components are electromagnetic motors, such as voice coil motors (Voice Coil Motor: VCM), shape memory alloy actuators (Shape of Memory Alloy Actuator: SMA) and the like.
- voice coil motors Voice Coil Motor: VCM
- shape memory alloy actuators Shape of Memory Alloy Actuator: SMA
- existing voice coil motors and shape memory alloy drivers are only suitable for driving optical components weighing less than 100mg, that is, if the weight of optical components exceeds 100mg, the existing drivers will not be able to meet the application requirements of camera modules .
- the existing voice coil motor is equipped with a coil and a magnet inside.
- the internal magnetic field will affect each other, resulting in displacement or vibration of the magnet, reducing the stability of its drive control. .
- this application proposes a new type of driver, which not only has relatively larger driving force and better driving performance (specifically including: higher precision driving control and longer driving stroke), but also can Adapt to the current development trend of light weight and thinner camera modules.
- the new driver is a piezoelectric actuator with a new structure, and the piezoelectric actuator can meet the technical requirements of the camera module for the driver.
- the piezoelectric actuator is arranged in the camera module in a suitable arrangement to form an anti-shake drive assembly 20 for driving the photosensitive assembly 30 for position adjustment, so that it meets the requirements.
- the anti-shake driving assembly 20 includes an anti-shake movable part 21, an anti-shake driving part 22, an anti-shake fixed part 23, a pre-pressing device 24, a guide The device 25 and the driving substrate 26, wherein the anti-shake movable part 21 is suitable for installing the photosensitive element 30 thereon, and the anti-shake movable part 21 is movable relative to the anti-shake fixed part 23, so
- the anti-shake driving part 22 is disposed between the anti-shake fixed part 23 and the anti-shake movable part 21, and the anti-shake driving part 22 is frictionally coupled to the anti-shake movable part 21, so that The anti-shake movable part 21 is driven to move relative to the anti-shake fixed part 23 by the friction driving force provided by the anti-shake driving part 22, and in this way, the photosensitive assembly 30 is driven to move to realize The adjustment of the optical performance of the camera module.
- the photosensitive assembly 30 is mounted on the anti-shake movable part 21 in a linked manner.
- the photosensitive assembly 30 is fixedly installed on the on the anti-shake movable part 21 , so that when the anti-shake driving part 22 drives the anti-shake movable part 21 , the photosensitive assembly 30 is also driven by the anti-shake movable part 21 .
- the anti-shake driving part 22 is arranged between the anti-shake fixed part 23 and the anti-shake movable part 21, for example, in a specific example of the present application, the anti-shake driving part 22 is respectively connected to The anti-shake movable part 21 and the anti-shake fixed part 23 are disposed between the anti-shake fixed part 23 and the movable part.
- the anti-shake driving part 22 is adapted to drive the photosensitive assembly 30 to translate and/or move in the X-axis direction (ie, the direction set by the X-axis) and the Y-axis direction (ie, the direction set by the Y-axis) Rotate around the Z-axis direction (that is, the direction set by the Z-axis) to achieve translational anti-shake and/or rotational anti-shake of the photosensitive assembly 30, that is, the anti-shake driving part 22 is suitable for actuating the
- the anti-shake movable part 21 moves in the XOY plane set by the X axis and the Y axis or rotates in the XOY plane around the Z axis perpendicular to the X axis and the Y axis.
- the X-axis direction and the Y-axis direction are perpendicular to each other, and the Z-axis direction is perpendicular to the plane where the X-axis direction and the Y-axis direction are located.
- the X axis, the Y axis and the Z axis constitute a three-dimensional coordinate system.
- the anti-shake fixing part 23 has a housing cavity 230, wherein the anti-shake movable part 21, the anti-shake driving part 22, the guide device 25, the The preloading device 24 and the driving substrate 26 are accommodated in the housing chamber 230 of the anti-shake fixed part 23, that is to say, the anti-shake fixed part 23 can hold the anti-shake movable part 21, the anti-shake fixed part 23
- the anti-shake drive part 22 , the guide device 25 , the preload device 24 and the drive substrate 26 are housed therein.
- the anti-shake movable part 21 is suspended in the storage cavity 230 of the anti-shake fixed part 23 to divide the storage cavity 230 into two parts (here , for the convenience of description, the two parts of the housing cavity 230 are defined as: the upper part 2301 and the lower part 2302), wherein the pre-pressure device 24, the driving substrate 26 and the anti-shake driving part 22 are arranged on One part of the receiving chamber 230 , and the pre-pressure device 24 is disposed in another part of the receiving chamber 230 .
- the driving substrate 26 is electrically connected to the anti-shake driving part 22, so as to realize the circuit conduction of the anti-shake driving assembly 20.
- the pre-pressure device 24 maintains the frictional coupling between the anti-shake driving part 22 and the anti-shake movable part 21 through the pre-pressure generated by the pre-pressure device 24 .
- the guiding device 25 is used to guide the movement of the anti-shake movable part 21 .
- the anti-shake movable part 21 is a mover, which can translate and/or rotate in the X-axis direction and the Y-axis direction under the drive of the anti-shake driving part 22 . Rotate in the direction of the Z axis to realize the function of anti-shake in translation and/or anti-shake in rotation of the photosensitive assembly 30 .
- the anti-shake driving part 22 uses a special driver as a driving element, the number of the anti-shake movable part 21 is one, that is, only one of the anti-shake movable parts 21 can be used in the anti-shake Driven by the shaking drive part 22, translation in the X-axis direction and the Y-axis direction and/or rotation around the Z-axis direction are realized.
- two movable parts that is, two movable carriers
- movement that is, one movable carrier moves in the X-axis direction driven by the X-direction piezoelectric motor
- the other movable carrier moves in the Y-axis direction driven by the Y-direction piezoelectric motor.
- the present application only needs one anti-shake movable part 21 (that is, only one movable carrier) to realize the translational movement in the X-axis direction and the Y-axis direction.
- the anti-shake movable part 21 includes a carrier body 211 , a carrier extension arm 212 and a friction plate 213 .
- the carrier body 211 forms the installation groove 2110 for installing the photosensitive assembly 30 therein, wherein the photosensitive assembly 30 is fixed in the installation groove 2110 so that the photosensitive assembly 30 can be placed in the installation groove 2110. Driven by the chip anti-shake movable part 21 to move.
- the carrier body 211 has a slot forming its side wall, so that the circuit board 31 of the photosensitive component 30 can protrude through the slot and extend to the electronic device motherboard. That is, in the embodiment of the present application, the carrier body 211 has a door formed on its side to allow the circuit board 31 of the photosensitive assembly 30 to pass through and extend out of the anti-shake drive assembly through the door. 20.
- the carrier extension arm 212 extends outward from the carrier body 211, for example, the carrier extension arm 212 is integrally outward from the carrier body 211 extend.
- the carrier extension arm 212 and the carrier body 211 are not at the same Highly extended.
- the height of the carrier extension arm 212 is higher than that of the carrier body 211 , and the carrier extension arm 212 extends upward and outward from the carrier body 211 .
- the carrier extension arm 212 with a height difference cooperates with the carrier body 211 and the anti-shake fixing part 23 to form an accommodating space along the Z-axis direction, and the accommodating space can be used for arranging the
- the anti-shake driving part 22 makes the structure of the camera module more compact.
- the friction plate 213 is arranged on the carrier extension arm 212, for example, the friction plate 213 is integrally formed on the carrier extension arm 212, of course
- the friction plate 213 and the carrier extension arm 212 may also be separate structures, for example, the friction plate 213 is an independent component, which is attached to the carrier extension arm 212 by an adhesive.
- the friction plate 213 is disposed on a side of the carrier extension arm 212 facing the anti-shake driving part 22 , that is, is disposed on a lower surface of the carrier extension arm 212 .
- the friction plate 213 is sandwiched between the anti-shake movable part 21 and the anti-shake driving part 22, so as to pass through the anti-shake driving part 22 and
- the pre-stressing device 24 enables the anti-shake movable part 21 to be frictionally coupled to the carrier extension arm 212 .
- the function of the friction plate 213 is to increase the frictional force between the anti-shake driving part 22 and the anti-shake movable part 21 .
- the carrier extension arm 212 has two U-shaped grooves respectively formed on opposite sides, wherein, in the anti-shake movable part 21 During the installation process, the anti-shake movable part 21 can be clamped by the U-shaped groove, which is convenient for installation.
- the anti-shake fixing part 23 includes an upper cover 231 and a base 232 that are engaged with each other, wherein the upper cover 231 and the base 232 A housing cavity 230 is formed between them, and the housing cavity 230 is used to accommodate the anti-shake movable part 21, the anti-shake driving part 22, the pre-pressure device 24, the guide device 25 and the drive substrate 26, through such
- the method can not only protect the components in the anti-shake drive assembly 20 from impact damage, but also prevent dust, dirt or stray light from entering the interior of the anti-shake drive assembly 20 .
- the upper cover 231 is sleeved above the base 232, and the upper cover 231 has an opening corresponding to the photosensitive component 30, so that the light reflected by the object can reach the photosensitive component 30 .
- the material of the upper cover 231 and the base 232 can be metal, such as cold-rolled carbon steel sheet (SPCC) or stainless steel and other magnetically conductive materials, which not only play a certain magnetically conductive role (that is, strengthen the magnetic field), but also can help for heat dissipation of the photosensitive element 30 .
- both the upper cover 231 and the base 232 are stators, that is, when the optical anti-shake function of the photosensitive assembly 30 is realized, the upper cover 231 and the base 232 remain still, wherein , the optical lens 10 is fixedly arranged on the upper cover 231 and is located on the photosensitive path of the photosensitive component 30 .
- the photosensitive assembly 30 is arranged in the placement groove 2110 of the anti-shake movable part 21, even the dust that enters through the gap of the anti-shake fixed part 23 will not enter the said anti-shake fixed part 23.
- the photosensitive component 30 will not affect the imaging effect.
- the anti-shake fixed part 23 has a receiving cavity 230 , and the anti-shake movable part 21 is suspended in the receiving cavity 230 of the anti-shake fixed part 23 .
- the anti-shake movable part 21 is suspended in the receiving cavity 230 of the anti-shake fixed part 23 .
- the anti-shake movable part 21 is suspended in the storage cavity 230, so that the storage cavity 230 is divided into an upper part 2301 and a lower part 2302 by the anti-shake movable part 21, wherein the upper part 2301 is formed between the upper cover 231 and the anti-shake movable part 21 , and the lower part 2302 is formed between the anti-shake movable part 21 and the base 232 .
- the anti-shake driving part 22 is arranged between the anti-shake movable part 21 and the anti-shake fixed part 23 , preferably, The anti-shake driving part 22 is arranged between the carrier extension arm 212 of the anti-shake movable part 21 and the base 232 of the anti-shake fixed part 23, that is, the anti-shake driving part 22 is arranged on the The lower part 2302 of the receiving cavity 230 .
- the anti-shake driving part 22 is installed on the anti-shake fixed part 23, it is in frictional contact with the anti-shake movable part 21, so as to drive the anti-shake movable part through the anti-shake driving part 22 21 translates in the direction of the X-axis and the direction of the Y-axis and/or rotates around the direction of the Z-axis.
- the anti-shake driving part 22 is arranged on the side of the carrier body 211 of the anti-shake movable part 21, that is, the anti-shake driving part 22 is arranged on the The receiving space formed by the carrier extension arm 212 and the base 232 can avoid increasing the height of the anti-shake driving assembly 20 .
- the anti-shake driving part 22 includes a first piezoelectric actuator 221 and a second piezoelectric actuator 222, and the first piezoelectric actuator 221 and the second piezoelectric actuator
- the piezoelectric actuators 222 are respectively disposed on opposite sides of the anti-shake driving assembly 20 .
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are arranged on opposite sides of the photosensitive element 30 parallel to each other, and the first piezoelectric actuator A piezoelectric actuator 221 and the second piezoelectric actuator 222 are adapted to move the anti-shake movable part 21 and the photosensitive assembly 30 in the XOY plane set by the X axis and the Y axis or Rotate in the XOY plane about a Z-axis perpendicular to the X-axis and the Y-axis.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 have the same height, so that the anti-shake movable part 21 is disposed on the anti-shake driving part 22 without inclination , that is, the anti-shake movable part 21 is stably supported on the first piezoelectric actuator 221 and the second piezoelectric actuator 222 .
- the height dimensions of the first piezoelectric actuator 221 and the second piezoelectric actuator 222 must not be unequal, but preferably, the first piezoelectric actuator
- the mounting surface formed by the actuator 221 and the second piezoelectric actuator 222 is always a flat surface, so that the anti-shake movable part 21 can be stably supported by the first piezoelectric actuator 221 and the mounting surface formed by the second piezoelectric actuator 222.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are arranged relatively parallel to the X-axis or the Y-axis, that is, the first The piezoelectric actuator 221 and the second piezoelectric actuator 222 are symmetrically arranged on opposite sides of the photosensitive assembly 30 with respect to the photosensitive assembly 30 with the X-axis or the Y-axis as a symmetrical axis .
- the carrier extension arm 212 extends outward from the carrier body 211 , so an accommodating space is formed between the carrier extension arm 212 and the base 232 , and the first The piezoelectric actuator 221 and the second piezoelectric actuator 222 are respectively arranged in the accommodating space, and the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are fixed on the The base 232 is frictionally coupled to the friction plate 213 disposed on the lower surface of the carrier extension arm 212 along the height direction.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are implemented as the same piezoelectric actuator.
- the piezoelectric actuator is a traveling-wave piezoelectric actuator, and the traveling-wave piezoelectric actuator has nanometer-level step precision, and can achieve more extreme Optical system requirements.
- the thrust of the piezoelectric actuator is 10 times greater than that of a general VCM motor (Voice coil Motor, voice coil motor). Compared with a general VCM motor, the piezoelectric actuator does not need to use coil magnets and other components. Electromagnetic interference is avoided, reducing reliability risks.
- the piezoelectric actuator is a cuboid structure, that is, on the XOY plane, the cross section of the piezoelectric actuator is a rectangular structure, including two long sides along the length direction and two short sides along the width direction .
- the piezoelectric actuator is arranged relatively parallel on both sides of the photosensitive assembly 30, that is, the first piezoelectric actuator 221 and the second piezoelectric actuator
- the actuator 222 is disposed on the anti-shake fixing part 23 relatively parallel to the X-axis or the Y-axis as a symmetrical axis.
- the piezoelectric actuator includes a piezoelectric ceramic plate 223 and a friction drive part 224.
- the piezoelectric ceramic of the piezoelectric actuator The plate 223 generates two types of surface changes in the traveling wave state, thereby driving the friction driving part 224 to produce a unidirectional yaw reciprocating motion along the X-axis direction and/or the Y-axis direction, because the friction driving part 224 and the friction plate 213 friction contact, and then drive the friction plate 213 to move.
- the piezoelectric ceramic plate 223 when the piezoelectric actuator is excited by a power source, the piezoelectric ceramic plate 223 will produce a wave-like movement along its length direction, and the friction part will move along its length under the drive of the piezoelectric ceramic plate. The direction of the yaw movement occurs, thereby driving the friction plate 213 to move along the length direction of the piezoelectric actuator; when the piezoelectric actuator is excited by another power source, the piezoelectric ceramic plate 223 will A serpentine motion is generated along its width direction, and the friction part is driven to yaw along its width direction, thereby driving the friction plate 213 to move along the width direction of the piezoelectric actuator.
- the piezoelectric actuator can respectively realize surface shape changes along its length direction or width direction, that is, the piezoelectric actuator can realize surface shape changes along its length direction and width direction at the same time. facial changes.
- the piezoelectric actuator is arranged along the X-axis direction, its length direction is along the X-axis direction, and its width direction is along the Y-axis direction; when the piezoelectric actuator is arranged along the Y-axis direction, its length direction is along the Y-axis direction.
- the Y-axis direction and the width direction are along the X-axis direction.
- the piezoelectric actuator in this application can generate different waveforms to move in the X and Y directions, and utilize the first piezoelectric actuator 221 and the second piezoelectric actuator 221 The cooperation of the two piezoelectric actuators 222 can also achieve Z-axis rotation.
- the piezoelectric actuator of the present application has a height of 0.7 mm to 0.9 mm, and can be hidden in the anti-shake driving assembly 20 to reduce the height of the anti-shake driving assembly 20 .
- the anti-shake function reduces the number of the anti-shake movable parts 21, which not only simplifies the structure of the camera module, but also helps reduce the height of the camera module.
- the first piezoelectric actuator 221 includes a first piezoelectric ceramic plate 2211 and a first friction driving part 2212 .
- the first piezoelectric ceramic plate 2211 is composed of very small piezoelectric ceramics. After the first piezoelectric ceramic plate 2211 is supplied with power excitation, through the inverse piezoelectric effect of the first piezoelectric ceramic plate 2211, The first piezoelectric ceramic plate 2211 is suitable for deformation, so that the first friction driving part 2212 on the first piezoelectric ceramic plate 2211 moves accordingly.
- the first piezoelectric ceramic plate 2211 is fixedly arranged on the base 232, and the first friction driving part 2212 faces the friction plate 213 on the anti-shake movable part 21, and the The frictional contact between the first friction driving part 2212 and the friction plate 213 is maintained, so that the first friction driving part 2212 can drive the friction plate 213 to move.
- the first friction driving part 2212 is located below the friction plate 213 and is in frictional contact with the friction plate 213 .
- the first friction driving part 2212 in the initial state, is located in the middle of the friction plate 213, and the friction plate 213 can move in the X-axis direction and the Y-axis direction under the drive of the anti-shake driving part 22. translation in the direction and/or rotation around the Z axis.
- the first friction driving part 2212 in the initial state, may also be located at other positions of the friction plate 213, for example, at the end of the friction plate 213, for this , is not limited by this application.
- the area of the friction plate 213 is larger than the driving stroke of the first piezoelectric actuator 221 .
- the second piezoelectric actuator 222 includes a second piezoelectric ceramic plate 2221 and a second friction driving part 2222 .
- the second piezoelectric ceramic plate 2221 is composed of very small piezoelectric ceramics. After the second piezoelectric ceramic plate 2221 is supplied with power excitation, through the inverse piezoelectric effect of the second piezoelectric ceramic plate 2221, The second piezoelectric ceramic plate 2221 is suitable for deformation, so that the second friction driving part 2222 on the second piezoelectric ceramic plate 2221 moves accordingly.
- the second piezoelectric ceramic plate 2221 is fixedly arranged on the base 232, and the second friction driving part 2222 faces the friction plate 213 on the anti-shake movable part 21, and the The friction contact between the second friction driving part 2222 and the friction plate 213 is maintained, so that the second friction driving part 2222 can drive the friction plate 213 to move.
- the second friction driving part 2222 is located below the friction plate 213 and is in frictional contact with the friction plate 213 .
- the second friction driving part 2222 in the initial state, is located in the middle of the friction plate 213, and the friction plate 213 can be driven by the anti-shake driving part 22 in the X-axis direction and the Y-axis translation in the direction and/or rotation around the Z axis.
- the second friction driving part 2222 in the initial state, may also be located at other positions of the friction plate 213, for example, at the end of the friction plate 213, and Not limited by this application. More preferably, the area of the friction plate 213 is greater than the driving stroke of the first piezoelectric actuator 221 .
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are arranged relatively parallel to the X-axis direction, that is, the first piezoelectric actuator
- the length direction of the actuator 221 and the second piezoelectric actuator 222 is along the X-axis direction
- the width direction of the first piezoelectric actuator 221 and the second piezoelectric actuator 222 is along the Y-axis direction.
- the first piezoelectric actuator 221 produces deformation along the length direction
- the second piezoelectric actuator 222 produces deformation along the length direction
- the anti-shake movable part 21 is driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222 to move along the X-axis direction.
- the first piezoelectric actuator 221 produces deformation along the width direction
- the second piezoelectric actuator 222 produces deformation along the width direction
- the anti-shake movable part 21 Driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222 together, it moves along the Y-axis direction.
- the first piezoelectric actuator 221 produces deformation along the length direction
- the second piezoelectric actuator 222 produces deformation in the opposite direction along the length direction (ie, the +X direction and ⁇ X directions)
- the anti-shake movable part 21 realizes the rotational movement around the Z axis when the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are driven. That is to say, in this application, the first piezoelectric actuator 221 and the second piezoelectric actuator 222 can cooperate with each other to drive the anti-shake movable part 21 in the X-axis direction and the Y-axis direction. direction and/or rotate around the Z-axis direction, so as to realize the translation anti-shake and/or rotation anti-shake of the photosensitive assembly 30 .
- first piezoelectric actuator 221 and the second piezoelectric actuator 222 can produce deformation along the length direction and width direction, only one of the piezoelectric actuators
- the movable part 21 can be driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222 to realize translational anti-shake in the XOY plane and rotation anti-shake around the Z-axis direction.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 first generate deformation along the length direction and then generate deformation along the width direction, and the anti-shake can Driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222, the moving part 21 first moves along the X-axis direction, and then moves along the Y-axis direction. In this way, the The anti-shake movable part 21 can move in the plane where XOY is located.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 can generate deformation in the width or length direction to provide driving force in two directions, but
- the driving force provided by the first piezoelectric actuator 221 and the second piezoelectric actuator 222 is limited to the length direction and the width direction, that is, only to the X-axis direction and the Y-axis direction, therefore, when required
- driving the photosensitive assembly 30 along a certain inclined direction for optical image stabilization it must first move along the X-axis direction, and then move along the Y-axis direction (of course, it can also be moved along the Y-axis direction first).
- the Y-axis direction moves, and then moves along the X-axis direction) instead of moving directly along the inclined direction, which is also an important difference from the traditional VCM motor for anti-shake.
- the first piezoelectric actuator 221 produces deformation along the first direction of the X-axis direction (for example, the positive direction of the X-axis direction), and the second piezoelectric actuator 222 produces deformation along the first direction of the X-axis direction.
- the deformation in the second direction of the X-axis direction (for example, the negative direction of the X-axis direction), that is, the first friction driving part 2212 generates a driving force in the positive direction of the X-axis direction, and the second friction driving part 2212 generates a driving force along the positive direction of the X-axis direction.
- the part 2222 generates a driving force in the negative direction along the X-axis direction.
- the anti-shake movable part 21 and the photosensitive assembly 30 are connected between the first piezoelectric actuator 221 and the second piezoelectric actuator 222.
- the drive realizes the rotational motion around the Z axis.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 first generate deformation along the width direction, and then generate deformation along the length direction, and the anti-shake movable Driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222, the part 21 first moves along the Y-axis direction, and then moves along the X-axis direction, so that the anti-shake can be
- the moving part 21 can move in the plane where XOY exists.
- the first piezoelectric actuator 221 produces deformation along the first direction of the X-axis direction (for example, the positive direction of the X-axis direction), and the second piezoelectric actuator 222 produces deformation along the X-axis direction.
- the second direction for example, the negative direction of the X-axis direction
- the first friction driving part 2212 generates a driving force along the positive direction of the X-axis direction
- the second friction driving part 2222 generates The driving force along the negative direction of the X-axis direction, so that the anti-shake movable part 21 and the photosensitive assembly 30 are driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222 to achieve Rotational movement around the Z axis.
- the first piezoelectric actuator 221 is adapted to deform along the direction set by the X-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 move along the direction set by the X-axis
- the second piezoelectric actuator 222 is adapted to deform along the direction set by the X-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 to move along the direction set by the X-axis, so as to actuate the anti-shake movable The part 21 and the photosensitive assembly 30 move along the direction set by the X-axis.
- the first piezoelectric actuator 221 is adapted to deform along the direction set by the Y-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 set along the Y-axis.
- the second piezoelectric actuator 222 is adapted to deform along the direction set by the Y-axis to move the anti-shake movable part 21 and the photosensitive element 30 along the set direction. The direction set by the Y-axis is moved, so that the anti-shake movable part 21 and the photosensitive element 30 are moved along the Move in the direction set by the Y axis.
- the first piezoelectric actuator 221 is adapted to deform along the first direction set by the X-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 along the X-axis.
- the set first direction moves
- the second piezoelectric actuator 222 is adapted to deform along the second direction opposite to the first direction set by the X-axis to actuate the
- the anti-shake movable part 21 and the photosensitive assembly 30 move along the second direction set by the X axis, so as to pass through the first piezoelectric actuator 221 and the second piezoelectric actuator 222
- the photosensitive assembly 30 is actuated to rotate around the Z axis in the XOY plane.
- the first piezoelectric actuator 221 is adapted to deform along the first direction set by the Y-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 along the Y axis.
- the second piezoelectric actuator 222 is adapted to deform along the second direction opposite to the first direction set by the Y axis to actuate the
- the anti-shake movable part 21 and the photosensitive assembly 30 move along the second direction set by the Y axis, so as to pass through the first piezoelectric actuator 221 and the second piezoelectric actuator 222 actuate the photosensitive assembly 30 to rotate around the Z axis in the XOY plane.
- the anti-shake movable part 21 can first realize the translation anti-shake of the XOY plane, and then realize the rotation anti-shake around the Z-axis direction; it can also first realize the rotation around the Z-axis direction Anti-shake, and then realize the translation anti-shake of the XOY plane.
- the anti-shake driving part 22 is arranged below the anti-shake movable part 21 along the height direction, specifically, the first piezoelectric ceramic plate 2211 is arranged on the The anti-shake fixed part 23, the first friction driving part 2212 is frictionally coupled to the anti-shake movable part 21, and the second piezoelectric ceramic plate 2221 is provided on the anti-shake fixed part 23, so The second friction driving part 2222 is frictionally coupled to the anti-shake movable part 21 .
- the pre-pressure device 24 is clamped and fixed between the first piezoelectric ceramic plate 2211 and the base 232 and between the second piezoelectric ceramic plate 2221 and the base 232, so as to pass through the The pre-pressure provided by the pre-pressure device 24 keeps the first friction driving part 2212 and the second friction driving part 2222 in frictional contact with the friction plate 213 of the carrier extension arm 212 .
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 can form a self-locking structure, that is, after the application of voltage is stopped, the first piezoelectric actuator 221 and the second piezoelectric actuator
- the two piezoelectric actuators 222 keep the anti-shake movable part 21 at the current position under the action of the pre-pressure device 24, without changing the position due to external shaking, so that the camera module The optical system of the group remains unchanged, thereby avoiding the impact on the imaging effect. It also omits the addition of a self-locking device in the camera module, which relatively reduces the size of the camera module. Due to the self-locking structure formed by the first piezoelectric actuator 221 and the second piezoelectric actuator 222, there is no need to keep the piezoelectric actuator activated to maintain its position.
- the pre-pressure device 24 provides a pre-pressure between the anti-shake driving part 22 and the anti-shake movable part 21, so that The friction driving part 224 of the anti-shake driving part 22 can be frictionally coupled to the anti-shake movable part 21 to drive the anti-shake movable part 21 to move along the driving direction through friction.
- the pre-pressure device 24 includes a first elastic element 241 and a second elastic element 242 .
- the first elastic element 241 is disposed between the first piezoelectric ceramic plate 2211 of the first piezoelectric actuator 221 and the base 232 to provide the first elastic element 241 with elastic force.
- a piezoelectric actuator 221 is sandwiched between the carrier extension arm 212 of the anti-shake movable part 21 and the base 232 of the anti-shake fixed part 23, that is, the first piezoelectric actuator
- the first friction driving part 2212 of the actuator 221 interferes with the carrier extension arm 212 of the anti-shake movable part 21.
- the first piezoelectric actuator 221 is frictionally coupled to the anti-shake Movable part 21.
- the second elastic element 242 is disposed between the second piezoelectric ceramic plate 2221 of the second piezoelectric actuator 222 and the base 232 to provide the first elastic force of the second elastic element 242.
- Two piezoelectric actuators 222 are sandwiched between the carrier extension arm 212 of the anti-shake movable part 21 and the base 232 of the anti-shake fixed part 23, that is, the second piezoelectric actuator
- the second friction driving part 2222 of the actuator 222 interferes with the carrier extension arm 212 of the anti-shake movable part 21. In this way, the second piezoelectric actuator 222 is frictionally coupled to the anti-shake Movable part 21.
- the pre-pressure device 24 is implemented as an elastic adhesive, that is, the first elastic element 241 and the second elastic element 242 are implemented as an elastic glue after curing. .
- the inner bottom surface of the base 232 and the first piezoelectric ceramic plate 2211 and between the inner bottom surface of the base 232 and the second piezoelectric ceramic plate 2221 are respectively applied.
- a layer of adhesive with a thickness of 10 um to 50 um is used to form the first elastic element 241 and the second elastic element 242 after the adhesive is cured and formed. That is, the first elastic element 241 and the second elastic element 242 of the preloading device 24 can also make the anti-shake driving part 22 be fixed on the inner side wall of the base 232 while providing the preloading force. the underside.
- the pre-pressure device 24 has a relatively high flatness, that is, when the adhesive is applied to form the first elastic element 241 and the second elastic element 242, the applied The adhesive has relatively high flatness and uniformity, so that the anti-shake driving part 22 can be fixed on the base 232 evenly, thereby improving the stability of the anti-shake driving part 22 .
- the first elastic element 241 and the second elastic element 242 of the preloading device 24 can also be implemented as elastic rubber due to its material properties, or a spring with elasticity due to its shape. ; It can also be a viscous elastic material, such as an adhesive (silicone, UV glue, thermosetting glue, UV thermosetting glue, etc.).
- the pre-pressure device 24 is arranged on the base 232, and the pre-pressure device 24 generates a pre-pressure upward along the Z-axis direction, and the pre-pressure can maintain the anti-shake
- the friction driving part 224 of the driving part 22 is in frictional contact with the friction plate 213 of the anti-shake movable part 21, and the preload can also keep the guide device 25 clamped between the upper cover 231 and the upper cover 231. Between the carrier extension arms 212 of the anti-shake movable part 21 , wherein the direction of the preload is perpendicular to the direction of the driving force.
- a guiding device is provided between the upper cover 231 and the movable part 21 of the image stabilization 25, in order to make the anti-shake movable part 21 always support the anti-shake movable part 21 during the process of moving relative to the anti-shake fixed part 23 during optical anti-shake, so that it can slide smoothly .
- the anti-shake drive assembly 20 further includes a guide device 25 disposed between the upper surface of the carrier extension arm 212 and the upper cover 231, and the guide device 25 It is suitable for guiding the anti-shake movable part 21 to move in the XOY plane set by the X axis and the Y axis.
- the guide device 25 includes a first guide groove 252 recessedly formed in the anti-shake movable part 21 and a guide received in the first guide groove 252 .
- the guide element 251 wherein, as mentioned above, under the action of the pre-pressure device 24, the guide device 25 can move the anti-shake movable part 21 relative to the anti-shake fixed part 23 Always keep in contact with the anti-shake movable part 21 and guide the movement of the anti-shake movable part 21 so that the anti-shake movable part 21 can move smoothly.
- the guide element 251 is placed in the first guide groove 252, the movement trajectory of the guide element 251 is limited in the first guide groove 252, and the guide element 251 can move in the first guide groove 252 along a plane perpendicular to the optical axis, so as to provide guidance for the movement of the anti-shake movable part 21 .
- the guide device 25 is formed on the upper part 2301 of the receiving cavity 230, wherein the first guide groove 252 is formed in a concave manner on the carrier of the anti-shake movable part 21
- the upper surface of the extension arm 212 is extended, and the opening of the first guiding groove 252 faces the upper cover 231 of the anti-shake fixing part 23 .
- the part of the upper cover 231 facing the first guide groove 252 is a planar structure
- the part of the carrier extension arm 212 facing the ball is a groove structure, that is, the guide
- the element 251 is accommodated in the first guide groove 252 of the carrier extension arm 212, the guide element 251 can only move in the first guide groove 252, and the first The guide groove 252 limits the movement of the guide element 251 and prevents the guide element 251 from breaking out of its moving range.
- the guide element 251 is implemented as a ball, for example, the guide element 251 is implemented as a ball made of ceramic material.
- the depth of the first guide groove 252 is less than or equal to the diameter of the ball, so that at least a part of the ball can be exposed on the top surface of the first guide groove 252, This enables the ball to be in frictional contact with the carrier extension arm 212 of the anti-shake movable part 21 .
- the number of the guide devices 25 is at least three, that is, the anti-shake driving assembly 20 includes at least three guide devices 25 .
- the number of the guide devices 25 is four, which can be respectively located at the four corners of the anti-shake driving assembly 20 to provide stable support for the anti-shake movable part 21, And the spare corner space of the anti-shake driving assembly 20 can be fully utilized, so that the structure of the anti-shake driving assembly 20 is more compact.
- the guide device 25 can also be a slider-chute structure, which is not limited in the present application, that is, the guide element 251 can also be It is implemented as a chute, and the first guide groove 252 is a chute.
- a second guide groove (not shown) with a direction may also be provided between the upper cover 231 and the upper surface of the anti-shake movable part 21, and the The guide element 251 is disposed in the second guide groove, and the movement track of the guide element 251 is limited in the track, so it can play a guiding role during the moving process of the photosensitive assembly 30 .
- the guide element 251 is a ball
- the ball can replace the sliding friction by rolling friction, which can further reduce the frictional force between the anti-shake movable part 21 and the upper cover 231 .
- a second guide groove along the x-axis direction may be provided on the bottom surface of the upper cover 231
- a second guide groove along the y-axis direction may be provided on the upper surface of the carrier extension arm 212 .
- the second guide groove (the bottom surface and the upper surface refer to the direction along the optical axis, from the photosensitive chip 32 to the optical lens 10), the second guide groove in the x direction is opposite to the second guide groove in the y direction
- a "cross" shaped accommodation cavity is formed to accommodate the guide element 251 therein.
- the number of the guide elements 251 and the receiving cavities is four, so that the anti-shake movable part 21 can be kept stable.
- both a track along the x-axis direction and a second guide groove along the y-axis direction may be provided on the upper surface of the carrier extension arm 212, and the two tracks on the same side Set on the same side of the carrier extension arm 212 .
- a second guide groove is provided on the lower surface of the upper cover 231 in a direction different from that on the upper surface of the carrier extension arm 212, that is, on the upper cover 231 and in the direction of the x-axis on the carrier extension arm 212.
- a second guide groove in the y-axis direction is set at a position opposite to the second guide groove of the carrier extension arm 212, and a second guide groove in the x-axis direction is set on the upper cover 231 opposite to the second guide groove in the y-axis direction of the carrier extension arm 212. Second guide slot to avoid interference.
- the guide element 251 of the guide device 25 is clamped between the anti-shake movable part 21 and the upper cover 231 of the anti-shake fixed part 23 , That is, the guide element 251 of the guide device 25 is clamped on the upper part 2301 of the receiving cavity 230, therefore, the guide element 251 can also provide a function that makes the anti-shake movable part 21
- the anti-shake movable part 21 is frictionally coupled to the pre-pressure of the anti-shake driving part 22 by moving downward.
- the guide element 251 of the guide device 25 also plays the role of the pre-pressure device 24 in essence, that is, the guide element 251 can be used as the A part provides support for the anti-shake movable part 21 , and can also serve as a pre-pressure device 24 to provide the required pre-pressure for the anti-shake driving part 22 .
- the guide element 251 is clamped between the upper cover 231 and the anti-shake movable part 21, therefore, the gravity of the guide element 251 itself and the force exerted by the upper cover 231, the guide element 251 can generate a pre-pressure forcing the anti-shake movable part 21 downward, and the lower side of the anti-shake movable part 21 is provided with the The anti-shake driving part 22 and the pre-pressure device 24, so that the pre-pressure generated by the guide element 251 can make the anti-shake movable part 21 interfere with the anti-shake driving part 22, and on the other hand , the pre-pressure device 24 can provide the upward pre-pressure of the anti-shake driving part 22, so that under the cooperation of the guide element 251 and the pre-pressure device 24, it can ensure that the anti-shake driving part 22 It is always in frictional contact with the anti-shake movable part 21 .
- the first piezoelectric ceramic plate 2211 and the second piezoelectric ceramic plate 2221 are fixed on the inner bottom surface of the base 232 relatively parallel to each other, and the first friction drives
- the part 2212 and the second friction driving part 2222 are fixed on the first piezoelectric ceramic plate 2211 and the second piezoelectric ceramic plate 2221 and face the anti-shake movable part 21, and are connected with the anti-shake movable
- the friction plate 213 of the portion 21 remains in frictional contact.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are respectively arranged below the anti-shake movable part 21, and the guide element 251 is arranged on the Between the anti-shake movable part 21 and the upper cover 231 , that is, the guide element 251 is disposed above the anti-shake movable part 21 . That is to say, the order of the setting module from top to bottom along the Z-axis direction is the upper cover 231, the guide element 251, the anti-shake movable part 21, the first piezoelectric actuator 221 and the second piezoelectric actuator.
- the anti-shake movable part 21 is clamped between the guide element 251 and the first piezoelectric actuator 221 and the second piezoelectric actuator 222, the The guide element 251 can generate a downward pre-pressure under the action of the upper cover 231, through which the first piezoelectric actuator 221 and the second piezoelectric actuator 222 can be kept in the position.
- the friction plate 213 of the anti-shake movable part 21 is in frictional contact.
- the first frictional driving part 2212 and the second frictional driving part 2222 are in frictional contact with the opposite sides of the carrier extension arm 212 respectively, and the guide element 251 is respectively extended with the upper cover 231 and the carrier.
- the four corners of the arm 212 are in frictional contact, the friction between the friction driving part and the friction plate 213 is active friction, the friction between the guide element 251 and the upper cover 231 is passive friction, and the first The friction force between the friction driving part 2212 , the second friction driving part 2222 and the friction plate 213 of the carrier extension arm 212 is greater than the friction force between the guiding element 251 and the upper cover 231 .
- the guide device 25 may also be arranged between the anti-shake movable part 21 and the base 232 (that is, arranged in the receiving chamber 230 lower part 2302), and the anti-shake driving part 22, the preloading device 24 and the driving substrate 26 are arranged between the anti-shake movable part 21 and the upper cover 231 (that is, arranged on the The upper part 2301 of the receiving cavity 230), but the same is that the guide element 251 of the guiding device 25 is clamped in the lower part 2302 of the receiving cavity 230 and provided so that the anti-shake movable part 21 interferes The preload on the anti-shake driving part 22. That is to say, although the positions of the guide device 25 and the anti-shake driving part 22 relative to the anti-shake movable part 21 can be adjusted, the guide element 251 of the guide device 25 can still Play a dual role: guiding role and preloading role.
- the driving substrate 26 is disposed between the anti-shake driving part 22 and the base 232 .
- a set of positioning points 2321 is provided on the bottom surface of the base 232 , and the driving substrate 26 is fixed on the base 232 through the positioning points 2321 of the base 232 .
- the driving substrate 26 includes a connection terminal 263 and at least one conductive terminal.
- the conductive end has a split structure and the number of the conductive ends is two, that is, the at least one conductive end includes a first conductive end 261 and a second conductive end 262 .
- the first piezoelectric ceramic plate 2211 of the first piezoelectric actuator 221 and the second piezoelectric ceramic plate 2221 of the second piezoelectric actuator 222 are respectively provided and electrically connected to the on the first conductive end 261 and the second conductive end 262 of the driving substrate 26, so that the first piezoelectric actuator 221 and the second piezoelectric actuator 222 pass through the driving substrate 26 achieve circuit conduction.
- the first conductive end 261 is disposed on the same side as the first piezoelectric actuator 221
- the second conductive end 262 is disposed on the same side as the second piezoelectric actuator 222
- the connecting end 263 is arranged on the side of the anti-shake drive assembly 20 where the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are not arranged, for example, the connecting end 263 is arranged on the side of the Between the first conductive end 261 and the second conductive end 262, and the connecting end 263 is electrically connected to the first conductive end 261 and the second conductive end 262, and the connecting end 263 connects the The first conductive end 261 and the second conductive end 262 realize circuit conduction with the main board of the electronic device.
- the driving substrate 26 and the circuit board 31 are respectively fixedly connected to the main board of the electronic device to achieve circuit conduction, so as to reduce the resistance of the driving substrate 26 to the movement of the circuit board 31 .
- the driving substrate 26 can be arranged between the base 232 and the pre-pressure device 24, and the driving substrate 26 can also be arranged between the pre-pressure device 24 and the pre-pressure device 24. Between the anti-shake drive unit 22 . That is to say, the driving substrate 26 may be directly disposed on the base 232 , or indirectly disposed on the base 232 through the pre-pressing device 24 .
- the base 232 has a slot formed on its side wall, and the connecting end 263 protrudes through the slot, and realizes the circuit conduction with the main board of the electronic device.
- the circuit board 31 and the connecting end 263 extend from the same side of the anti-shake driving assembly 20, that is, the slot of the base 232 and the opening of the anti-shake movable part 21 are set on the same side , so that the circuit board 31 and the connection end 263 are electrically connected to the main board of the electronic device from the same side of the anti-shake driving assembly 20 .
- the anti-shake movable part 21 is disposed above the base 232, the circuit board 31 is disposed above the driving substrate 26, and the connection end 263 between the circuit board 31 and the driving substrate 26 is along the height direction. There is a certain gap, and the gap can prevent the circuit board 31 from contacting the driving substrate 26 during the moving process, thereby affecting the effect of optical anti-shake.
- the range of the gap is 0.1mm-0.15mm.
- the drive substrate 26 and the circuit board 31 can also be extended from different sides of the anti-shake drive assembly 20 to be electrically connected to the main board of the electronic device, that is, the base 232 and the
- the openings of the side walls of the anti-shake movable part 21 may be disposed on different sides, such as opposite sides or adjacent sides, so that the movement of the circuit board 31 will not be affected.
- FIG. 35 illustrates a modified embodiment of the anti-shake driving assembly 20 according to the embodiment of the present application, wherein, as shown in FIG. 35 , the difference from the above embodiment is that the first piezoelectric actuator 221
- the second piezoelectric actuator 222 can also be arranged relatively parallel to the Y-axis direction, that is, the length direction of the first piezoelectric actuator 221 and the second piezoelectric actuator 222 is along the Y-axis direction , that is, the width direction of the first piezoelectric actuator 221 and the second piezoelectric actuator 222 is along the Y-axis direction.
- the first piezoelectric actuator 221 produces deformation along the length direction
- the second piezoelectric actuator 222 produces deformation along the length direction
- the anti-shake movable part 21 Driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222, it moves along the Y-axis direction
- the first piezoelectric actuator 221 generates Deformation along the width direction
- the second piezoelectric actuator 222 produces deformation along the width direction
- the anti-shake movable part 21 is connected between the first piezoelectric actuator 221 and the second piezoelectric actuator 222 to move along the X-axis direction
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 first generate deformation along the length direction, and then generate deformation along the Deformation in the width direction
- the anti-shake movable part 21 is driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222 to move
- the drive of 222 realizes the rotational movement around the Z axis. That is to say, in this application, the first piezoelectric actuator 221 and the second piezoelectric actuator 222 can cooperate with each other to drive the anti-shake movable part 21 in the X-axis direction and the Y-axis direction. direction and/or rotate around the Z-axis direction, so as to realize the translation anti-shake and/or rotation anti-shake of the photosensitive assembly 30 .
- Fig. 36 illustrates another modified embodiment of the anti-shake driving assembly 20 according to the embodiment of the present application, wherein, as shown in Fig. 36, the difference from the above embodiment is that the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are arranged perpendicular to each other, that is, the length direction of the first piezoelectric actuator 221 is along the X-axis direction, and the width direction is along the Y-axis direction; the second piezoelectric actuator 221 The length direction of the actuator 222 is along the Y-axis direction, and the width direction is along the X-axis direction.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are located adjacent to the driving assembly 20 .
- the first piezoelectric actuator 221 produces deformation along the length direction
- the second piezoelectric actuator 222 produces deformation along the width direction
- the anti-shake movable part 21 Driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222, it moves along the X-axis direction
- the first piezoelectric actuator 221 generates Deformation along the width direction
- the second piezoelectric actuator 222 produces deformation along the length direction
- the first piezoelectric actuator 221 first generates deformation along the length direction, and then generates deformation along the width direction
- the second piezoelectric actuator 221 generates deformation along the width direction.
- the piezoelectric actuator 222 first produces deformation along the width direction, and then produces deformation along the length direction. Driven by the drive, it first moves along the X-axis direction, and then moves along the Y-axis direction, that is, the anti-shake movable part 21 can move in the plane where XOY is located. That is to say, in this application, the first piezoelectric actuator 221 and the second piezoelectric actuator 222 can cooperate with each other to drive the anti-shake movable part 21 in the X-axis direction and the Y-axis direction. Move in the direction.
- the camera module based on the embodiment of the present application is clarified, wherein the camera module adopts a new type of piezoelectric actuator as a driving element to not only provide a sufficient driving force, but also provide precision Higher and longer drive performance to meet the optical performance adjustment requirements of the camera module, for example, optical image stabilization requirements.
- an anti-shake driving assembly 20 which includes: an anti-shake fixing part 23 having a housing cavity 230;
- the anti-shake movable part 21 inside is used to divide the accommodating cavity 230 into an upper part 2301 and a lower part 2302 through the anti-shake movable part 21, wherein the anti-shake movable part 21 is suitable for installing the photosensitive assembly 30 on On it;
- the anti-shake driving part 22 disposed at the lower part 2302 of the housing cavity 230, wherein the anti-shake driving part 22 includes a first piezoelectric actuator frictionally coupled to the anti-shake movable part 21 221 and a second piezoelectric actuator 222, the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are suitable for actuating the anti-shake movable part 21 in the X-axis and Y-axis
- the axis moves in the XOY plane set by the axis or rotates in the XOY plane around the Z axis perpendic
- the anti-shake fixing part 23 includes a base 232 and an upper cover 231 that is engaged with the base 232, and the upper part 2301 of the storage cavity 230 is formed on the upper cover. 231 and the anti-shake movable part 21 , the lower part 2302 of the housing cavity 230 is formed between the base 232 and the anti-shake movable part 21 .
- the anti-shake driving assembly 20 there is a gap between the anti-shake movable part 21 and the base 232, and there is a gap between the anti-shake movable part 21 and the upper cover 231, through In this way, the anti-shake movable part 21 is suspended in the receiving cavity 230 of the anti-shake fixed part 23 .
- the anti-shake movable part 21 is smoothly clamped between the first piezoelectric actuator 221 and the guide element 251 and the second between the piezoelectric actuator 222 and the guide element 251 .
- the anti-shake movable part 21 includes a carrier body 211 and a carrier extension arm 212 extending outward from the carrier body 211, wherein the guide element 251 is clamped Hold between the lower surface of the upper cover 231 and the upper surface of the carrier extension arm 212, the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are frictionally coupled to the The lower surface of the carrier extension arm 212.
- the anti-shake movable part 21 further includes a friction plate 213 formed on the lower surface of the carrier extension arm 212, the first piezoelectric actuator 221 and the The second piezoelectric actuator 222 is frictionally coupled to the friction plate 213 .
- the anti-shake drive assembly 20 further includes a first guide groove 252 concavely formed on the upper surface of the carrier extension arm 212, and the guide element 251 is accommodated In the first guide groove 252, the guide element 251 and the first guide groove 252 form a guide device for guiding the anti-shake movable part 21 and the photosensitive assembly 30 to move 25, wherein at least a part of the guide element 251 protrudes from the groove and is in contact with the lower surface of the upper cover 231, in this way, the guide element 251 is clamped on the upper cover 231 and the upper surface of the carrier extension arm 212 .
- the guide element 251 is a guide element 251 .
- the guide element 251 is a slider.
- the first guide groove 252 extends along the direction set by the X-axis
- the guide device 25 further includes a recess formed on the upper cover 231
- the second guide groove on the lower surface of the second guide groove extends along the direction set by the Y-axis.
- the first guide groove 252 extends along the direction set by the Y-axis
- the guide device 25 further includes a recess formed on the upper cover 231
- the second guide groove on the lower surface of the second guide groove extends along the direction set by the X-axis.
- the first guide segment and the second guide groove are oppositely arranged and cross each other.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 have the same height dimension.
- the height dimension of the first piezoelectric actuator 221 and the second piezoelectric actuator 222 is 0.7mm-0.9mm.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are traveling wave piezoelectric actuators, wherein the first piezoelectric actuator
- the electric actuator 221 includes a first piezoelectric ceramic plate 2211 and a first friction driving part 2212 protruding from the first piezoelectric ceramic plate 2211, and the first piezoelectric ceramic plate 2211 is adapted to generate deformation to drive the first friction drive part 2212 to perform unidirectional yaw reciprocating motion;
- the second piezoelectric actuator 222 includes a second piezoelectric ceramic plate 2221 and protrudes from the second piezoelectric ceramic plate
- the second friction driving part 2222 of 2221, the second piezoelectric ceramic plate 2221 is adapted to be deformed after being electrically driven to drive the second friction driving part 2222 to perform unidirectional yaw reciprocating motion.
- the first piezoelectric ceramic plate 2211 is arranged on the anti-shake fixing part 23, and the first friction driving part 2212 is frictionally coupled to the anti-shake fixed part 23.
- the moving part 21 and the second piezoelectric ceramic plate 2221 are disposed on the anti-shake fixed part 23 , and the second friction driving part 2222 is frictionally coupled to the anti-shake movable part 21 .
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are arranged in parallel on opposite sides of the photosensitive assembly 30 .
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are relative to the photosensitive assembly 30 with the X-axis or the Y-axis as The symmetry axis is symmetrically arranged on two opposite sides of the photosensitive component 30 .
- the first piezoelectric actuator 221 is adapted to deform along the direction set by the X-axis to actuate the anti-shake movable part 21 and the photosensitive
- the assembly 30 moves along the direction set by the X-axis
- the second piezoelectric actuator 222 is adapted to deform along the direction set by the X-axis to actuate the anti-shake movable
- the part 21 and the photosensitive assembly 30 move along the direction set by the X axis, so as to actuate the anti-shake through the first piezoelectric actuator 221 and the second piezoelectric actuator 222
- the movable part 21 and the photosensitive assembly 30 move along the direction set by the X-axis;
- the first piezoelectric actuator 221 is adapted to deform along the direction set by the Y-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 set along the Y-axis.
- the second piezoelectric actuator 222 is adapted to deform along the direction set by the Y-axis to move the anti-shake movable part 21 and the photosensitive element 30 along the set direction.
- the direction set by the Y-axis is moved, so that the anti-shake movable part 21 and the photosensitive element 30 are moved along the moving in the direction set by the Y-axis;
- the first piezoelectric actuator 221 is adapted to deform along the first direction set by the X-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 along the X-axis.
- the set first direction moves
- the second piezoelectric actuator 222 is adapted to deform along the second direction opposite to the first direction set by the X-axis to actuate the
- the anti-shake movable part 21 and the photosensitive assembly 30 move along the second direction set by the X axis, so as to pass through the first piezoelectric actuator 221 and the second piezoelectric actuator 222 Actuating the photosensitive assembly 30 to rotate around the Z axis in the XOY plane;
- the first piezoelectric actuator 221 is adapted to deform along the first direction set by the Y-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 along the Y-axis.
- the set first direction moves
- the second piezoelectric actuator 222 is adapted to deform along the Y-axis set in a second direction opposite to the first direction to actuate the
- the anti-shake movable part 21 and the photosensitive assembly 30 move along the second direction set by the Y axis, so as to pass through the first piezoelectric actuator 221 and the second piezoelectric actuator 222
- the photosensitive assembly 30 is actuated to rotate around the Z axis in the XOY plane.
- the anti-shake driving assembly 20 further includes a driving substrate 26 disposed between the anti-shaking movable part 21 and the base 232, and the driving substrate 26 includes at least A conductive end and a connecting end 263 extending outward from the conductive end, the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are electrically connected to the at least one electrical connecting end 263 .
- the at least one conductive end includes a first conductive end 261 and a second conductive end 262, and the first piezoelectric actuator 221 is electrically connected to the first conductive end 261 , the second piezoelectric actuator 222 is electrically connected to the second conductive end 262 .
- the anti-shake movable part 21 has a slot formed on the side wall of the carrier body 211, and the slot is configured to allow the circuit board of the photosensitive assembly 30 to 31 protrudes from the slot 2110.
- the base 232 has an opening formed on a sidewall thereof, wherein the connecting end 263 extends outward from the at least one conductive end and passes through the opening.
- the opening and the slot have a height difference.
- the anti-shake driving assembly 20 further includes a pre-pressure device 24 arranged between the anti-shake driving part 22 and the anti-shake fixing part 23, so as to pass the The pre-pressure provided by the pre-pressure device 24 forces the anti-shake driving part 22 to be frictionally coupled to the anti-shake movable part 21 .
- the pre-pressure device 24 includes a first elastic element disposed between the base 232 and the first piezoelectric ceramic plate 2211 of the first piezoelectric actuator 221 .
- the element 241 is used to generate the pre-pressure by the elastic force of the first elastic element 241 itself to force the first friction driving part 2212 of the first piezoelectric actuator 221 to resist the friction plate 213, through such
- the method makes the first friction driving part 2212 of the first piezoelectric actuator 221 frictionally coupled to the friction plate 213;
- the pre-pressure device 24 also includes a The second elastic element 242 between the second piezoelectric ceramic plates 2221 of the electric actuator 222 forces the second piezoelectric actuator to The second friction driving part 2222 of the piezoelectric actuator 222 is in contact with the friction plate 213 , so that the second friction driving part 2222 of the second piezoelectric actuator 222 is frictionally coupled to the friction plate 213 .
- the thickness of the first elastic element 241 and the second elastic element 242 is 10 um to 50 um.
- the anti-shake drive assembly 20 based on the embodiment of the present application is explained, wherein the guide device 25 and the anti-shake drive part 22 of the anti-shake drive assembly 20 are arranged opposite to the anti-shake movable part 21 Both sides of the guide device 25, the anti-shake movable part 21 and the anti-shake drive part 22 are clamped and arranged in the accommodation cavity 230 formed by the anti-shake fixed part 23, so that In addition to guiding the movement of the anti-shake movable part 21, the guide element 251 of the guide device 25 also serves to provide a pre-pressure to keep the anti-shake driving part 22 frictionally coupled to the anti-shake driving part 22.
- the anti-shake movable part 21 is described.
- the camera module As shown in FIG. 37 to FIG. 52, the camera module according to the embodiment of the present application is illustrated, which includes a photosensitive component 30, an optical lens 10 held on the photosensitive path of the photosensitive component 30, and an optical lens 10 for driving the photosensitive component 30.
- the component 30 moves to realize the anti-shake driving component 20 for adjusting the optical performance of the camera module.
- the photosensitive component 30 is installed in the anti-shake driving component 20, for example, as shown in FIG. 37 to FIG. 2110, the photosensitive assembly 30 is installed in the anti-shake driving assembly 20 in a manner of being accommodated in the placement groove 2110, so that when the anti-shake driving assembly 20 is driven, it can carry the photosensitive assembly 30 moves along a preset direction to realize the adjustment of the optical performance of the camera module, for example, perform optical anti-shake and the like.
- the optical lens 10 is kept on the photosensitive path of the photosensitive assembly 30, for example, the optical lens 10 is installed on the anti-shake in a manner of being fixed on the top surface of the anti-shake driving assembly 20 In the driving assembly 20, the optical lens 10 is held on the photosensitive path of the photosensitive assembly 30 in such a way that the photosensitive assembly 30 can receive the light projected from the optical lens 10 to form an image.
- the optical lens 10 includes a lens barrel 11 and a lens group installed in the lens barrel 11, wherein the lens group includes at least one optical lens 12, and
- the quantity of the at least one optical lens 12 is not limited.
- the optical lens 10 is fixedly arranged on the light-sensing path of the light-sensing assembly 30 in a manner of being directly arranged on the top surface of the anti-shake driving assembly 20 .
- the optical lens 10 can be placed on the top surface of the anti-shake driving assembly 20 through a mirror mount 13, wherein the mirror mount 13 has a through hole formed therein , the light refracted by the optical lens 10 can enter the photosensitive component 30 through the through hole.
- the optical lens 10 can be placed on the top surface of the anti-shake driving assembly 20 through a lens driving part 14, wherein the lens driving part 14 has a setting formed therein
- the optical lens 10 is installed in the installation space of the lens driving part 14, and the lens driving part 14 can drive the optical lens 10 to move to achieve optical focusing and/or optical anti-shake functions.
- the lens driving part 14 may be a driving lens driving part 14 of a voice coil lens driving part 14, a piezoelectric lens driving part 14, an SMA (Shape Memory Alloy) lens driving part 14 or the like.
- the mirror holder 13 or the lens driving part 14 can directly accommodate a plurality of optical lenses 12 of the optical lens 10; in another example of the present application, the mirror A seat 13 or a lens driving portion 14 can accommodate the lens barrel 11 of the optical lens 10 and the plurality of optical lenses 12 provided in the lens barrel 11 .
- the lens driving part 14 also includes a lens focusing part, and the lens focusing part is suitable for driving the translation of the optical lens 10 in the Z-axis direction to adjust the The distance between the optical lens 10 and the photosensitive assembly 30 realizes the focusing function of the optical lens 10 .
- the lens driving part 14 may also include a lens anti-shake part, and the lens anti-shake part is suitable for driving the optical lens 10 to translate and move in the X-axis and Y-axis directions.
- the lens driving part 14 may only include the lens focusing part or the lens anti-shake part; the lens driving part 14 may also include the lens focusing part and the lens anti-shake part at the same time, Therefore, the lens driving part 14 can realize not only the lens focusing function but also the lens anti-shake function.
- the photosensitive component 30 includes a circuit board 31 , a photosensitive chip 32 , an electronic component 33 , a base 34 and a filter component 35 .
- the photosensitive chip 32 is arranged on the circuit board 31 and electrically connected to the circuit board 31, for example, the photosensitive chip 32 is mounted on the circuit board 31 and electrically connected to the circuit board 31, wherein , the base 34 is arranged on the circuit board 31 and is located on the peripheral side of the photosensitive chip 32, and the filter element 35 is held on the photosensitive chip 32 by being mounted on the base 34. on the photosensitive path.
- the photosensitive chip 32 includes a photosensitive area and a non-photosensitive area surrounding the photosensitive area, wherein the photosensitive area is composed of a pixel array for receiving and sensing imaging light from the outside and converting optical signals into electrical signals.
- the photosensitive chip 32 is mounted on the upper surface of the circuit board 31 through an adhesive, and is electrically connected to the circuit board 31 by means of gold wires.
- the photosensitive chip 32 can also be arranged on the circuit board 31 in other ways and/or be electrically connected to the circuit board 31 in other ways, for example, by flip-chip bonding Attached to the lower surface of the circuit board 31 , this is not limited by the present application.
- the photosensitive path of the photosensitive chip 32 forms the photosensitive path of the photosensitive component 30 .
- the base 34 is disposed on the circuit board 31 to package the electronic components 33 on the circuit board 31 and to support other components.
- the base is implemented as a separately molded plastic bracket, which is attached to the surface of the circuit board 31 by an adhesive and used to support other components.
- the base can also be formed on the circuit board 31 in other ways, for example, the base is implemented as a molded base, which is integrally formed on the The preset position of the circuit board 31 is not limited by this application.
- the filter element 35 is held on the photosensitive path of the photosensitive chip 32 for filtering the imaging light entering the photosensitive chip 32 .
- the filter element 35 is installed on the base 34 and corresponds to at least the photosensitive area of the photosensitive chip 32, in this way, the filter element 35 is held on the On the photosensitive path of the photosensitive chip 32 .
- the filter element 35 can also be installed on the base 34 in other ways, for example, first set the filter element bracket on the base 34, and then place The filter element 35 is installed on the filter element holder, that is, in this example, the filter element 35 can be indirectly installed on the base 34 through other supports. And, in other examples of the present application, the filter element 35 can also be installed in other positions of the variable focus camera module, for example, the filter element 35 is formed in the optical lens 10 (for example , as a layer of filter film attached to the surface of a certain optical lens of the zoom lens group), which is not limited by the present application.
- existing driving elements for driving optical components are electromagnetic motors, such as voice coil motors (Voice Coil Motor: VCM), shape memory alloy actuators (Shape of Memory Alloy Actuator: SMA) and the like.
- voice coil motors Voice Coil Motor: VCM
- shape memory alloy actuators Shape of Memory Alloy Actuator: SMA
- existing voice coil motors and shape memory alloy drivers are only suitable for driving optical components weighing less than 100mg, that is, if the weight of optical components exceeds 100mg, the existing drivers will not be able to meet the application requirements of camera modules .
- the existing voice coil motor is equipped with a coil and a magnet inside.
- the internal magnetic field will affect each other, resulting in displacement or vibration of the magnet, reducing the stability of its drive control. .
- this application proposes a new type of driver, which not only has relatively larger driving force and better driving performance (specifically including: higher precision driving control and longer driving stroke), but also can Adapt to the current development trend of light weight and thinner camera modules.
- the new driver is a piezoelectric actuator with a new structure, and the piezoelectric actuator can meet the technical requirements of the camera module for the driver.
- the piezoelectric actuator is arranged in the camera module in a suitable arrangement to form an anti-shake drive assembly 20 for driving the photosensitive assembly 30 for position adjustment, so that it meets the requirements.
- the anti-shake driving assembly 20 includes an anti-shake movable part 21, an anti-shake driving part 22, an anti-shake fixed part 23, a pre-pressing device 24, a guide The device 25 and the driving substrate 26, wherein the anti-shake movable part 21 is suitable for installing the photosensitive element 30 thereon, and the anti-shake movable part 21 is movable relative to the anti-shake fixed part 23, so
- the anti-shake driving part 22 is disposed between the anti-shake fixed part 23 and the anti-shake movable part 21, and the anti-shake driving part 22 is frictionally coupled to the anti-shake movable part 21, so that The anti-shake movable part 21 is driven to move relative to the anti-shake fixed part 23 by the friction driving force provided by the anti-shake driving part 22, and in this way, the photosensitive assembly 30 is driven to move to realize The adjustment of the optical performance of the camera module.
- the photosensitive assembly 30 is mounted on the anti-shake movable part 21 in a linked manner.
- the photosensitive assembly 30 is fixedly installed on the on the anti-shake movable part 21 , so that when the anti-shake driving part 22 drives the anti-shake movable part 21 , the photosensitive assembly 30 is also driven by the anti-shake movable part 21 .
- the anti-shake driving part 22 is arranged between the anti-shake fixed part 23 and the anti-shake movable part 21, for example, in a specific example of the present application, the anti-shake driving part 22 is respectively connected to The anti-shake movable part 21 and the anti-shake fixed part 23 are disposed between the anti-shake fixed part 23 and the movable part.
- the anti-shake driving part 22 is adapted to drive the photosensitive assembly 30 to translate and/or move in the X-axis direction (ie, the direction set by the X-axis) and the Y-axis direction (ie, the direction set by the Y-axis) Rotate around the Z-axis direction (that is, the direction set by the Z-axis) to achieve translational anti-shake and/or rotational anti-shake of the photosensitive assembly 30, that is, the anti-shake driving part 22 is suitable for actuating the
- the anti-shake movable part 21 moves in the XOY plane set by the X axis and the Y axis or rotates in the XOY plane around the Z axis perpendicular to the X axis and the Y axis.
- the X-axis direction and the Y-axis direction are perpendicular to each other, and the Z-axis direction is perpendicular to the plane where the X-axis direction and the Y-axis direction are located.
- the X axis, the Y axis and the Z axis constitute a three-dimensional coordinate system.
- the anti-shake fixing part 23 has a housing cavity 230, wherein the anti-shake movable part 21, the anti-shake driving part 22, the guide device 25, the The preloading device 24 and the driving substrate 26 are accommodated in the housing chamber 230 of the anti-shake fixed part 23, that is to say, the anti-shake fixed part 23 can hold the anti-shake movable part 21, the anti-shake fixed part 23
- the anti-shake drive part 22 , the guide device 25 , the preload device 24 and the drive substrate 26 are housed therein.
- the anti-shake movable part 21 is suspended in the storage cavity 230 of the anti-shake fixed part 23 to divide the storage cavity 230 into two parts (here , for the convenience of description, the two parts of the housing cavity 230 are defined as: the first part 2301 and the second part 2302), wherein the pre-pressure device 24, the driving substrate 26 and the anti-shake driving part 22 It is arranged in the first part 2301 of the storage chamber 230 , and the pre-pressure device 24 is arranged in the second part 2302 of the storage chamber 230 opposite to the first part 2301 .
- the driving substrate 26 is electrically connected to the anti-shake driving part 22, and is used to implement the circuit of the anti-shake driving assembly 20 Conducted, the pre-pressure device 24 maintains the frictional coupling between the anti-shake driving part 22 and the anti-shake movable part 21 through the pre-pressure generated by the pre-pressure device 24 .
- the guiding device 25 is used to guide the movement of the anti-shake movable part 21 .
- the anti-shake movable part 21 is a mover, which can translate and/or rotate in the X-axis direction and the Y-axis direction under the drive of the anti-shake driving part 22 . Rotate in the direction of the Z axis to realize the function of anti-shake in translation and/or anti-shake in rotation of the photosensitive assembly 30 .
- the anti-shake driving part 22 uses a special driver as a driving element, the number of the anti-shake movable part 21 is one, that is, only one of the anti-shake movable parts 21 can be used in the anti-shake Driven by the shaking drive part 22, translation in the X-axis direction and the Y-axis direction and/or rotation around the Z-axis direction are realized.
- two movable parts that is, two movable carriers
- movement that is, one movable carrier moves in the X-axis direction driven by the X-direction piezoelectric motor
- the other movable carrier moves in the Y-axis direction driven by the Y-direction piezoelectric motor.
- the present application only needs one anti-shake movable part 21 (that is, only one movable carrier) to realize the translational movement in the X-axis direction and the Y-axis direction.
- the anti-shake movable part 21 includes a carrier body 211 , a carrier extension arm 212 and a friction plate 213 .
- the carrier body 211 forms the installation groove 2110 for installing the photosensitive assembly 30 therein, wherein the photosensitive assembly 30 is fixed in the installation groove 2110 so that the photosensitive assembly 30 can be placed in the installation groove 2110. Driven by the chip anti-shake movable part 21 to move.
- the carrier body 211 has a slot forming its side wall, so that the circuit board 31 of the photosensitive component 30 can protrude through the slot and extend to the electronic device motherboard. That is, in the embodiment of the present application, the carrier body 211 has a door formed on its side to allow the circuit board 31 of the photosensitive assembly 30 to pass through and extend out of the anti-shake drive assembly through the door. 20.
- the carrier extension arm 212 extends outward from the carrier body 211, for example, the carrier extension arm 212 is integrally outward from the carrier body 211 extend.
- the carrier extension arm 212 and the carrier body 211 are not at the same Highly extended.
- the height of the carrier extension arm 212 is higher than that of the carrier body 211 , and the carrier extension arm 212 extends upward and outward from the carrier body 211 .
- the carrier extension arm 212 with a height difference cooperates with the carrier body 211 and the anti-shake fixing part 23 to form an accommodating space along the Z-axis direction, and the accommodating space can be used for arranging the
- the anti-shake driving part 22 makes the structure of the camera module more compact.
- the friction plate 213 is arranged on the carrier extension arm 212, for example, the friction plate 213 is integrally formed on the carrier extension arm 212, of course
- the friction plate 213 and the carrier extension arm 212 may also be separate structures, for example, the friction plate 213 is an independent component, which is attached to the carrier extension arm 212 by an adhesive.
- the friction plate 213 is disposed on a side of the carrier extension arm 212 facing the anti-shake driving part 22 , that is, is disposed on a lower surface of the carrier extension arm 212 .
- the friction plate 213 is sandwiched between the anti-shake movable part 21 and the anti-shake driving part 22, so as to pass through the anti-shake driving part 22 and
- the pre-stressing device 24 enables the anti-shake movable part 21 to be frictionally coupled to the carrier extension arm 212 .
- the function of the friction plate 213 is to increase the frictional force between the anti-shake driving part 22 and the anti-shake movable part 21 .
- the carrier extension arm 212 has two U-shaped grooves respectively formed on opposite sides, wherein, in the anti-shake movable part 21 During the installation process, the anti-shake movable part 21 can be clamped by the U-shaped groove, which is convenient for installation.
- the anti-shake fixing part 23 includes an upper cover 231 and a base 232 that are engaged with each other, wherein the upper cover 231 and the base 232
- the housing cavity 230 is formed between them, and the housing cavity 230 is used to accommodate the anti-shake movable part 21, the anti-shake driving part 22, the pre-pressure device 24, the guide device 25 and the driving substrate 26.
- the method can not only protect the components in the anti-shake driving assembly 20 from impact damage, but also prevent dust, dirt or stray light from entering the interior of the anti-shake driving assembly 20 .
- the upper cover 231 is sleeved above the base 232, and the upper cover 231 has an opening corresponding to the photosensitive component 30, so that the light reflected by the object can reach the photosensitive component 30 .
- the material of the upper cover 231 and the base 232 can be metal, such as cold-rolled carbon steel sheet (SPCC) or stainless steel and other magnetically conductive materials, which not only play a certain magnetically conductive role (that is, strengthen the magnetic field), but also can help for heat dissipation of the photosensitive element 30 .
- both the upper cover 231 and the base 232 are stators, that is, when the optical anti-shake function of the photosensitive assembly 30 is realized, the upper cover 231 and the base 232 remain still, wherein , the optical lens 10 is fixedly arranged on the upper cover 231 and is located on the photosensitive path of the photosensitive component 30 .
- the photosensitive assembly 30 is arranged in the placement groove 2110 of the anti-shake movable part 21, even the dust that enters through the gap of the anti-shake fixed part 23 will not enter the said anti-shake fixed part 23.
- the photosensitive component 30 will not affect the imaging effect.
- the anti-shake fixed part 23 has a receiving cavity 230 , and the anti-shake movable part 21 is suspended in the receiving cavity 230 of the anti-shake fixed part 23 .
- the anti-shake movable part 21 is suspended in the receiving cavity 230 of the anti-shake fixed part 23 .
- the anti-shake movable part 21 is suspended in the storage cavity 230, so that the storage cavity 230 is divided into a first part 2301 and a second part 2302 by the anti-shake movable part 21, wherein, The first part 2301 is formed between the upper cover 231 and the anti-shake movable part 21 (that is, the first part 2301 is the upper part of the storage cavity), and the second part 2302 is formed Between the anti-shake movable part 21 and the base 232 (that is, the second part 2302 is the lower part of the receiving cavity 230 ).
- the gap can be used to accommodate the guide device 25, so that the anti-shake movable part 21 supports the upper cover 231 of the anti-shake fixed part 23 through the guide device 25;
- the lower part of the cavity 230 there is also a gap between the bottom surface of the base 232 and the bottom surface of the anti-shake movable part 21, and the gap can be used to accommodate the anti-shake driving part 22, the driving substrate 26 And the pre-pressure device 24.
- the anti-shake driving part 22 is arranged between the anti-shake movable part 21 and the anti-shake fixed part 23, preferably, The anti-shake driving part 22 is arranged between the carrier extension arm 212 of the anti-shake movable part 21 and the base 232 of the anti-shake fixed part 23, that is, the anti-shake driving part 22 is arranged on the The second part 2302 of the receiving chamber 230 .
- the anti-shake driving part 22 is installed on the anti-shake fixed part 23, it is in frictional contact with the anti-shake movable part 21, so as to drive the anti-shake movable part through the anti-shake driving part 22 21 translates in the direction of the X-axis and the direction of the Y-axis and/or rotates around the direction of the Z-axis.
- the anti-shake driving part 22 is arranged on the side of the carrier body 211 of the anti-shake movable part 21, that is, the anti-shake driving part 22 is arranged on the The receiving space formed by the carrier extension arm 212 and the base 232 can avoid increasing the height of the anti-shake driving assembly 20 .
- the anti-shake driving part 22 includes a first piezoelectric actuator 221 and a second piezoelectric actuator 222, and the first piezoelectric actuator 221 and the second piezoelectric actuator
- the piezoelectric actuators 222 are respectively disposed on opposite sides of the anti-shake driving assembly 20 .
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are arranged on opposite sides of the photosensitive element 30 parallel to each other, and the first piezoelectric actuator A piezoelectric actuator 221 and the second piezoelectric actuator 222 are adapted to move the anti-shake movable part 21 and the photosensitive assembly 30 in the XOY plane set by the X axis and the Y axis or Rotate in the XOY plane about a Z-axis perpendicular to the X-axis and the Y-axis.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 have the same height, so that the anti-shake movable part 21 is disposed on the anti-shake driving part 22 without inclination , that is, the anti-shake movable part 21 is stably supported on the first piezoelectric actuator 221 and the second piezoelectric actuator 222 .
- the height dimensions of the first piezoelectric actuator 221 and the second piezoelectric actuator 222 must not be unequal, but preferably, the first piezoelectric actuator
- the mounting surface formed by the actuator 221 and the second piezoelectric actuator 222 is always a flat surface, so that the anti-shake movable part 21 can be stably supported by the first piezoelectric actuator 221 and the mounting surface formed by the second piezoelectric actuator 222.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are arranged relatively parallel to the X-axis or the Y-axis, that is, the first The piezoelectric actuator 221 and the second piezoelectric actuator 222 are symmetrically arranged on opposite sides of the photosensitive assembly 30 with respect to the photosensitive assembly 30 with the X-axis or the Y-axis as a symmetrical axis .
- the carrier extension arm 212 extends outward from the carrier body 211 , so an accommodating space is formed between the carrier extension arm 212 and the base 232 , and the first The piezoelectric actuator 221 and the second piezoelectric actuator 222 are respectively arranged in the accommodating space, and the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are fixed on the The base 232 is frictionally coupled to the friction plate 213 disposed on the lower surface of the carrier extension arm 212 along the height direction.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are implemented as the same piezoelectric actuator.
- the piezoelectric actuator is a traveling-wave piezoelectric actuator, and the traveling-wave piezoelectric actuator has nanometer-level step precision, and can achieve more extreme Optical system requirements.
- the thrust of the piezoelectric actuator is 10 times greater than that of a general VCM motor (Voice coil Motor, voice coil motor). Compared with a general VCM motor, the piezoelectric actuator does not need to use coil magnets and other components. Electromagnetic interference is avoided, reducing reliability risks.
- the piezoelectric actuator is a cuboid structure, that is, on the XOY plane, the cross section of the piezoelectric actuator is a rectangular structure, including two long sides along the length direction and two short sides along the width direction .
- the piezoelectric actuator is arranged relatively parallel on both sides of the photosensitive assembly 30, that is, the first piezoelectric actuator 221 and the second piezoelectric actuator
- the actuator 222 is disposed on the anti-shake fixing part 23 relatively parallel to the X-axis or the Y-axis as a symmetrical axis.
- the piezoelectric actuator includes a piezoelectric ceramic plate 223 and a friction drive part 224.
- the piezoelectric ceramic of the piezoelectric actuator The plate 223 generates two types of surface changes in the traveling wave state, thereby driving the friction driving part 224 to produce a unidirectional yaw reciprocating motion along the X-axis direction and/or the Y-axis direction, because the friction driving part 224 and the friction plate 213 friction contact, and then drive the friction plate 213 to move.
- the piezoelectric ceramic plate 223 when the piezoelectric actuator is excited by a power source, the piezoelectric ceramic plate 223 will produce a wave-like movement along its length direction, and the friction part will move along its length under the drive of the piezoelectric ceramic plate. The direction of the yaw movement occurs, thereby driving the friction plate 213 to move along the length direction of the piezoelectric actuator; when the piezoelectric actuator is excited by another power source, the piezoelectric ceramic plate 223 will A serpentine motion is generated along its width direction, and the friction part is driven to yaw along its width direction, thereby driving the friction plate 213 to move along the width direction of the piezoelectric actuator.
- the piezoelectric actuator can respectively realize surface shape changes along its length direction or width direction, that is, the piezoelectric actuator can realize surface shape changes along its length direction and width direction at the same time. facial changes.
- the piezoelectric actuator is arranged along the X-axis direction, its length direction is along the X-axis direction, and its width direction is along the Y-axis direction; when the piezoelectric actuator is arranged along the Y-axis direction, its length direction is along the Y-axis direction.
- the Y-axis direction and the width direction are along the X-axis direction.
- the piezoelectric actuator in this application can generate different waveforms to move in the X and Y directions, and utilize the first piezoelectric actuator 221 and the second piezoelectric actuator 221 The cooperation of the two piezoelectric actuators 222 can also achieve Z-axis rotation.
- the piezoelectric actuator of the present application has a height of 0.7 mm to 0.9 mm, and can be hidden in the anti-shake driving assembly 20 to reduce the height of the anti-shake driving assembly 20 .
- the anti-shake function reduces the number of the anti-shake movable parts 21, which not only simplifies the structure of the camera module, but also helps reduce the height of the camera module.
- the first piezoelectric actuator 221 includes a first piezoelectric ceramic plate 2211 and a first friction driving part 2212 .
- the first piezoelectric ceramic plate 2211 is composed of very small piezoelectric ceramics. After the first piezoelectric ceramic plate 2211 is supplied with power excitation, through the inverse piezoelectric effect of the first piezoelectric ceramic plate 2211, The first piezoelectric ceramic plate 2211 is suitable for deformation, so that the first friction driving part 2212 on the first piezoelectric ceramic plate 2211 moves accordingly.
- the first piezoelectric ceramic plate 2211 is fixedly arranged on the base 232, and the first friction driving part 2212 faces the friction plate 213 on the anti-shake movable part 21, and the The frictional contact between the first friction driving part 2212 and the friction plate 213 is maintained, so that the first friction driving part 2212 can drive the friction plate 213 to move.
- the first friction driving part 2212 is located below the friction plate 213 and is in frictional contact with the friction plate 213 .
- the first friction driving part 2212 in the initial state, is located in the middle of the friction plate 213, and the friction plate 213 can move in the X-axis direction and the Y-axis direction under the drive of the anti-shake driving part 22. translation in the direction and/or rotation around the Z axis.
- the first friction driving part 2212 in the initial state, may also be located at other positions of the friction plate 213, for example, at the end of the friction plate 213, for this , is not limited by this application.
- the area of the friction plate 213 is larger than the driving stroke of the first piezoelectric actuator 221 .
- the second piezoelectric actuator 222 includes a second piezoelectric ceramic plate 2221 and a second friction driving part 2222 .
- the second piezoelectric ceramic plate 2221 is composed of very small piezoelectric ceramics. After the second piezoelectric ceramic plate 2221 is supplied with power excitation, through the inverse piezoelectric effect of the second piezoelectric ceramic plate 2221, The second piezoelectric ceramic plate 2221 is suitable for deformation, so that the second friction driving part 2222 on the second piezoelectric ceramic plate 2221 moves accordingly.
- the second piezoelectric ceramic plate 2221 is fixedly arranged on the base 232, and the second friction driving part 2222 faces the friction plate 213 on the anti-shake movable part 21, and the The friction contact between the second friction driving part 2222 and the friction plate 213 is maintained, so that the second friction driving part 2222 can drive the friction plate 213 to move.
- the second friction driving part 2222 is located below the friction plate 213 and is in frictional contact with the friction plate 213 .
- the second friction driving part 2222 in the initial state, is located in the middle of the friction plate 213, and the friction plate 213 can be driven by the anti-shake driving part 22 in the X-axis direction and the Y-axis translation in the direction and/or rotation around the Z axis.
- the second friction driving part 2222 in the initial state, may also be located at other positions of the friction plate 213, for example, at the end of the friction plate 213, and Not limited by this application. More preferably, the area of the friction plate 213 is greater than the driving stroke of the first piezoelectric actuator 221 .
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are arranged relatively parallel to the X-axis direction, that is, the first piezoelectric actuator
- the length direction of the actuator 221 and the second piezoelectric actuator 222 is along the X-axis direction
- the width direction of the first piezoelectric actuator 221 and the second piezoelectric actuator 222 is along the Y-axis direction.
- the first piezoelectric actuator 221 produces deformation along the length direction
- the second piezoelectric actuator 222 produces deformation along the length direction
- the anti-shake movable part 21 is driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222 to move along the X-axis direction.
- the first piezoelectric actuator 221 produces deformation along the width direction
- the second piezoelectric actuator 222 produces deformation along the width direction
- the anti-shake movable part 21 Driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222 together, it moves along the Y-axis direction.
- the first piezoelectric actuator 221 produces deformation along the length direction
- the second piezoelectric actuator 222 produces deformation in the opposite direction along the length direction (ie, the +X direction and ⁇ X directions)
- the anti-shake movable part 21 realizes the rotational movement around the Z axis when the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are driven. That is to say, in this application, the first piezoelectric actuator 221 and the second piezoelectric actuator 222 can cooperate with each other to drive the anti-shake movable part 21 in the X-axis direction and the Y-axis direction. direction and/or rotate around the Z-axis direction, so as to realize the translation anti-shake and/or rotation anti-shake of the photosensitive assembly 30 .
- first piezoelectric actuator 221 and the second piezoelectric actuator 222 can produce deformation along the length direction and width direction, only one of the piezoelectric actuators
- the movable part 21 can be driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222 to realize translational anti-shake in the XOY plane and rotation anti-shake around the Z-axis direction.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 first generate deformation along the length direction and then generate deformation along the width direction, and the anti-shake can Driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222, the moving part 21 first moves along the X-axis direction, and then moves along the Y-axis direction. In this way, the The anti-shake movable part 21 can move in the plane where XOY is located.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 can generate deformation in the width or length direction to provide driving force in two directions, but
- the driving force provided by the first piezoelectric actuator 221 and the second piezoelectric actuator 222 is limited to the length direction and the width direction, that is, only to the X-axis direction and the Y-axis direction, therefore, when required
- driving the photosensitive assembly 30 along a certain inclined direction for optical image stabilization it must first move along the X-axis direction, and then move along the Y-axis direction (of course, it can also be moved along the Y-axis direction first).
- the Y-axis direction moves, and then moves along the X-axis direction) instead of moving directly along the inclined direction, which is also an important difference from the traditional VCM motor for anti-shake.
- the first piezoelectric actuator 221 produces deformation along the first direction of the X-axis direction (for example, the positive direction of the X-axis direction), and the second piezoelectric actuator 222 produces deformation along the first direction of the X-axis direction.
- the deformation in the second direction of the X-axis direction (for example, the negative direction of the X-axis direction), that is, the first friction driving part 2212 generates a driving force in the positive direction of the X-axis direction, and the second friction driving part 2212 generates a driving force along the positive direction of the X-axis direction.
- the part 2222 generates a driving force in the negative direction along the X-axis direction.
- the anti-shake movable part 21 and the photosensitive assembly 30 are connected between the first piezoelectric actuator 221 and the second piezoelectric actuator 222.
- the drive realizes the rotational motion around the Z axis.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 first generate deformation along the width direction, and then generate deformation along the length direction, and the anti-shake movable Driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222, the part 21 first moves along the Y-axis direction, and then moves along the X-axis direction, so that the anti-shake can be
- the moving part 21 can move in the plane where XOY exists.
- the first piezoelectric actuator 221 produces deformation along the first direction of the X-axis direction (for example, the positive direction of the X-axis direction), and the second piezoelectric actuator 222 produces deformation along the X-axis direction.
- the second direction for example, the negative direction of the X-axis direction
- the first friction driving part 2212 generates a driving force along the positive direction of the X-axis direction
- the second friction driving part 2222 generates The driving force along the negative direction of the X-axis direction, so that the anti-shake movable part 21 and the photosensitive assembly 30 are driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222 to achieve Rotational movement around the Z axis.
- the first piezoelectric actuator 221 is adapted to deform along the direction set by the X-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 move along the direction set by the X-axis
- the second piezoelectric actuator 222 is adapted to deform along the direction set by the X-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 to move along the direction set by the X-axis, so as to actuate the anti-shake movable The part 21 and the photosensitive assembly 30 move along the direction set by the X-axis.
- the first piezoelectric actuator 221 is adapted to deform along the direction set by the Y-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 set along the Y-axis.
- the second piezoelectric actuator 222 is adapted to deform along the direction set by the Y-axis to move the anti-shake movable part 21 and the photosensitive element 30 along the set direction. The direction set by the Y-axis is moved, so that the anti-shake movable part 21 and the photosensitive element 30 are moved along the Move in the direction set by the Y axis.
- the first piezoelectric actuator 221 is adapted to deform along the first direction set by the X-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 along the X-axis.
- the set first direction moves
- the second piezoelectric actuator 222 is adapted to deform along the second direction opposite to the first direction set by the X-axis to actuate the
- the anti-shake movable part 21 and the photosensitive assembly 30 move along the second direction set by the X axis, so as to pass through the first piezoelectric actuator 221 and the second piezoelectric actuator 222
- the photosensitive assembly 30 is actuated to rotate around the Z axis in the XOY plane.
- the first piezoelectric actuator 221 is adapted to deform along the first direction set by the Y-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 along the Y axis.
- the second piezoelectric actuator 222 is adapted to deform along the second direction opposite to the first direction set by the Y axis to actuate the
- the anti-shake movable part 21 and the photosensitive assembly 30 move along the second direction set by the Y axis, so as to pass through the first piezoelectric actuator 221 and the second piezoelectric actuator 222 actuate the photosensitive assembly 30 to rotate around the Z axis in the XOY plane.
- the anti-shake movable part 21 can first realize the translation anti-shake of the XOY plane, and then realize the rotation anti-shake around the Z-axis direction; it can also first realize the rotation around the Z-axis direction Anti-shake, and then realize the translation anti-shake of the XOY plane.
- the anti-shake driving part 22 is arranged below the anti-shake movable part 21 along the height direction, specifically, the first piezoelectric ceramic plate 2211 is arranged on the The anti-shake fixed part 23, the first friction driving part 2212 is frictionally coupled to the anti-shake movable part 21, and the second piezoelectric ceramic plate 2221 is provided on the anti-shake fixed part 23, so The second friction driving part 2222 is frictionally coupled to the anti-shake movable part 21 .
- the pre-pressure device 24 is clamped and fixed between the first piezoelectric ceramic plate 2211 and the base 232 and between the second piezoelectric ceramic plate 2221 and the base 232, so as to pass through the The pre-pressure provided by the pre-pressure device 24 keeps the first friction driving part 2212 and the second friction driving part 2222 in frictional contact with the friction plate 213 of the carrier extension arm 212 .
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 can form a self-locking structure, that is, after the application of voltage is stopped, the first piezoelectric actuator 221 and the second piezoelectric actuator
- the two piezoelectric actuators 222 keep the anti-shake movable part 21 at the current position under the action of the pre-pressure device 24, without changing the position due to external shaking, so that the camera module The optical system of the group remains unchanged, thereby avoiding the impact on the imaging effect. It also omits the addition of a self-locking device in the camera module, which relatively reduces the size of the camera module. Due to the self-locking structure formed by the first piezoelectric actuator 221 and the second piezoelectric actuator 222, there is no need to keep the piezoelectric actuator activated to maintain its position.
- the pre-pressure device 24 provides a pre-pressure between the anti-shake drive part 22 and the anti-shake movable part 21, so that The friction driving part 224 of the anti-shake driving part 22 can be frictionally coupled to the anti-shake movable part 21 to drive the anti-shake movable part 21 to move along the driving direction through friction.
- the pre-pressure device 24 includes a first elastic element 241 and a second elastic element 242 .
- the first elastic element 241 is disposed between the first piezoelectric ceramic plate 2211 of the first piezoelectric actuator 221 and the base 232 to provide the first elastic element 241 with elastic force.
- a piezoelectric actuator 221 is sandwiched between the carrier extension arm 212 of the anti-shake movable part 21 and the base 232 of the anti-shake fixed part 23, that is, the first piezoelectric actuator
- the first friction driving part 2212 of the actuator 221 interferes with the carrier extension arm 212 of the anti-shake movable part 21.
- the first piezoelectric actuator 221 is frictionally coupled to the anti-shake Movable part 21.
- the second elastic element 242 is disposed between the second piezoelectric ceramic plate 2221 of the second piezoelectric actuator 222 and the base 232 to provide the first elastic force of the second elastic element 242.
- Two piezoelectric actuators 222 are sandwiched between the carrier extension arm 212 of the anti-shake movable part 21 and the base 232 of the anti-shake fixed part 23, that is, the second piezoelectric actuator
- the second friction driving part 2222 of the actuator 222 interferes with the carrier extension arm 212 of the anti-shake movable part 21. In this way, the second piezoelectric actuator 222 is frictionally coupled to the anti-shake Movable part 21.
- the pre-pressure device 24 is implemented as an elastic adhesive, that is, the first elastic element 241 and the second elastic element 242 are implemented as an elastic glue after curing. .
- the inner bottom surface of the base 232 and the first piezoelectric ceramic plate 2211 and between the inner bottom surface of the base 232 and the second piezoelectric ceramic plate 2221 are respectively applied.
- a layer of adhesive with a thickness of 10 um to 50 um is used to form the first elastic element 241 and the second elastic element 242 after the adhesive is cured and formed. That is, the first elastic element 241 and the second elastic element 242 of the preloading device 24 can also make the anti-shake driving part 22 be fixed on the inner side wall of the base 232 while providing the preloading force. the underside.
- the pre-pressure device 24 has a relatively high flatness, that is, when the adhesive is applied to form the first elastic element 241 and the second elastic element 242, the applied The adhesive has relatively high flatness and uniformity, so that the anti-shake driving part 22 can be fixed on the base 232 evenly, thereby improving the stability of the anti-shake driving part 22 .
- the first elastic element 241 and the second elastic element 242 of the preloading device 24 can also be implemented as elastic rubber due to its material properties, or a spring with elasticity due to its shape. ; It can also be a viscous elastic material, such as an adhesive (silicone, UV glue, thermosetting glue, UV thermosetting glue, etc.).
- the pre-pressure device 24 is arranged on the base 232, and the pre-pressure device 24 generates a pre-pressure upward along the Z-axis direction, and the pre-pressure can maintain the anti-shake
- the friction driving part 224 of the driving part 22 is in frictional contact with the friction plate 213 of the anti-shake movable part 21, and the preload can also keep the guide device 25 clamped between the upper cover 231 and the upper cover 231. Between the carrier extension arms 212 of the anti-shake movable part 21 , wherein the direction of the preload is perpendicular to the direction of the driving force.
- a guiding device is provided between the upper cover 231 and the movable part 21 of the image stabilization. 25, in order to make the anti-shake movable part 21 always support the anti-shake movable part 21 during the process of moving relative to the anti-shake fixed part 23 during optical anti-shake, so that it can slide smoothly .
- the anti-shake drive assembly 20 further includes a guide device 25 disposed between the upper surface of the carrier extension arm 212 and the upper cover 231, and the guide device 25 It is suitable for guiding the anti-shake movable part 21 to move in the XOY plane set by the X axis and the Y axis.
- the guide device 25 includes a first guide groove 252 recessedly formed in the anti-shake movable part 21 and a guide received in the first guide groove 252 .
- the guide element 251 wherein, as mentioned above, under the action of the pre-pressure device 24, the guide device 25 can move the anti-shake movable part 21 relative to the anti-shake fixed part 23 Always keep in contact with the anti-shake movable part 21 and guide the movement of the anti-shake movable part 21 so that the anti-shake movable part 21 can move smoothly.
- the guide element 251 is placed in the first guide groove 252, the movement trajectory of the guide element 251 is limited in the first guide groove 252, and the guide element 251 can move in the first guide groove 252 along a plane perpendicular to the optical axis, so as to provide guidance for the movement of the anti-shake movable part 21 .
- the guide device 25 is formed in the first part 2301 of the receiving cavity 230 , wherein the first guide groove 252 is formed in a recessed manner in the movable part 21 of the anti-shake.
- the carrier extends the upper surface of the arm 212 , and the opening of the first guiding groove 252 faces the upper cover 231 of the anti-shake fixing part 23 .
- the part of the upper cover 231 facing the first guide groove 252 is a planar structure
- the part of the carrier extension arm 212 facing the ball is a groove structure, that is, the guide
- the element 251 is accommodated in the first guide groove 252 of the carrier extension arm 212, the guide element 251 can only move in the first guide groove 252, and the first The guide groove 252 limits the movement of the guide element 251 and prevents the guide element 251 from leaving its moving range.
- the guide element 251 is implemented as a ball, for example, the guide element 251 is implemented as a ball made of ceramic material.
- the depth of the first guide groove 252 is less than or equal to the diameter of the ball, so that at least a part of the ball can be exposed on the top surface of the first guide groove 252, This enables the ball to be in frictional contact with the carrier extension arm 212 of the anti-shake movable part 21 .
- the number of the guide devices 25 is at least three, that is, the anti-shake driving assembly 20 includes at least three guide devices 25 .
- the number of the guide devices 25 is four, which can be respectively located at the four corners of the anti-shake driving assembly 20 to provide stable support for the anti-shake movable part 21, And the spare corner space of the anti-shake driving assembly 20 can be fully utilized, so that the structure of the anti-shake driving assembly 20 is more compact.
- the guide device 25 can also be a slider-chute structure, which is not limited in the present application, that is, the guide element 251 can also be It is implemented as a chute, and the first guide groove 252 is a chute.
- a second guide groove (not shown) with a direction may also be provided between the upper cover 231 and the upper surface of the anti-shake movable part 21, and the The guide element 251 is disposed in the second guide groove, and the movement track of the guide element 251 is limited in the track, so it can play a guiding role during the moving process of the photosensitive assembly 30 .
- the guide element 251 is a ball
- the ball can replace the sliding friction by rolling friction, which can further reduce the frictional force between the anti-shake movable part 21 and the upper cover 231 .
- a second guide groove along the x-axis direction may be provided on the bottom surface of the upper cover 231
- a second guide groove along the y-axis direction may be provided on the upper surface of the carrier extension arm 212 .
- the second guide groove (the bottom surface and the upper surface refer to the direction along the optical axis, from the photosensitive chip 32 to the optical lens 10), the second guide groove in the x direction is opposite to the second guide groove in the y direction
- a "cross" shaped accommodation cavity is formed to accommodate the guide element 251 therein.
- the number of the guide elements 251 and the receiving cavities is four, so that the anti-shake movable part 21 can be kept stable.
- both a track along the x-axis direction and a second guide groove along the y-axis direction may be provided on the upper surface of the carrier extension arm 212, and the two tracks on the same side Set on the same side of the carrier extension arm 212 .
- a second guide groove is provided on the lower surface of the upper cover 231 in a direction different from that on the upper surface of the carrier extension arm 212, that is, on the upper cover 231 and in the direction of the x-axis on the carrier extension arm 212.
- a second guide groove in the y-axis direction is set at a position opposite to the second guide groove of the carrier extension arm 212, and a second guide groove in the x-axis direction is set on the upper cover 231 opposite to the second guide groove in the y-axis direction of the carrier extension arm 212. Second guide slot to avoid interference.
- the guide element 251 of the guide device 25 is clamped between the anti-shake movable part 21 and the upper cover 231 of the anti-shake fixed part 23 , That is, the guide element 251 of the guide device 25 is clamped in the first part 2301 of the receiving cavity 230, therefore, the guide element 251 can also provide a function that makes the anti-shake movable part 21 moves downward so that the anti-shake movable part 21 is frictionally coupled to the preload of the anti-shake driving part 22 .
- the guide element 251 of the guide device 25 also plays the role of the pre-pressure device 24 in essence, that is, the guide element 251 can be used as the A part provides support for the anti-shake movable part 21 , and can also serve as a pre-pressure device 24 to provide the required pre-pressure for the anti-shake driving part 22 .
- the guide element 251 is clamped between the upper cover 231 and the anti-shake movable part 21, therefore, the gravity of the guide element 251 itself and the force exerted by the upper cover 231, the guide element 251 can generate a pre-pressure forcing the anti-shake movable part 21 downward, and the lower side of the anti-shake movable part 21 is provided with the The anti-shake driving part 22 and the pre-pressure device 24, so that the pre-pressure generated by the guide element 251 can make the anti-shake movable part 21 interfere with the anti-shake driving part 22, and on the other hand , the pre-pressure device 24 can provide the upward pre-pressure of the anti-shake driving part 22, so that under the cooperation of the guide element 251 and the pre-pressure device 24, it can ensure that the anti-shake driving part 22 It is always in frictional contact with the anti-shake movable part 21 .
- the first piezoelectric ceramic plate 2211 and the second piezoelectric ceramic plate 2221 are fixed on the inner bottom surface of the base 232 relatively parallel to each other, and the first friction drives
- the part 2212 and the second friction driving part 2222 are fixed on the first piezoelectric ceramic plate 2211 and the second piezoelectric ceramic plate 2221 and face the anti-shake movable part 21, and are connected with the anti-shake movable
- the friction plate 213 of the portion 21 remains in frictional contact.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are respectively arranged below the anti-shake movable part 21, and the guide element 251 is arranged on the Between the anti-shake movable part 21 and the upper cover 231 , that is, the guide element 251 is disposed above the anti-shake movable part 21 . That is to say, the order of the setting module from top to bottom along the Z-axis direction is the upper cover 231, the guide element 251, the anti-shake movable part 21, the first piezoelectric actuator 221 and the second piezoelectric actuator.
- the anti-shake movable part 21 is clamped between the guide element 251 and the first piezoelectric actuator 221 and the second piezoelectric actuator 222, the The guide element 251 can generate a downward pre-pressure under the action of the upper cover 231, through which the first piezoelectric actuator 221 and the second piezoelectric actuator 222 can be kept in the position.
- the friction plate 213 of the anti-shake movable part 21 is in frictional contact.
- the first frictional driving part 2212 and the second frictional driving part 2222 are in frictional contact with the opposite sides of the carrier extension arm 212 respectively, and the guide element 251 is respectively extended with the upper cover 231 and the carrier.
- the four corners of the arm 212 are in frictional contact, the friction between the friction driving part and the friction plate 213 is active friction, the friction between the guide element 251 and the upper cover 231 is passive friction, and the first The friction force between the friction driving part 2212 , the second friction driving part 2222 and the friction plate 213 of the carrier extension arm 212 is greater than the friction force between the guiding element 251 and the upper cover 231 .
- the frictional force between the anti-shake driving part 22 and the anti-shake movable part 21 is greater than that of the guiding device. 25 the friction force encountered in the first part 2301.
- the guiding element 251 for example, a ball
- the guiding element 251 of the guiding device 25 will also rub against the upper cover 231 .
- the friction between the anti-shake drive part 22 and the anti-shake movable part 21 is active friction, while the friction between the guide element 251 and the upper cover 231 is passive friction, that is, the anti-shake
- the frictional force between the shaking driving part 22 and the anti-shaking movable part 21 is greater than the frictional force encountered by the guiding device 25 in the first part 2301, in this way, the guiding element 251 is prevented from The movement of the anti-shake movable part 21 is hindered, thereby affecting the anti-shake effect.
- the guide device 25 may also be arranged between the anti-shake movable part 21 and the base 232 (that is, arranged in the receiving chamber 230 second part 2302), and the anti-shake driving part 22, the pre-pressure device 24 and the driving substrate 26 are arranged between the anti-shake movable part 21 and the upper cover 231 (that is, set in the first part 2301 of the receiving cavity 230), but it remains unchanged that the friction force between the guide element 251 of the guide device 25 and the base 232 is smaller than that between the anti-shake driving part 22 and the The frictional driving force between the anti-shake movable parts ensures that the guiding device 25 can play a guiding role while avoiding its existence from affecting the movement of the anti-shake movable parts.
- the driving substrate 26 is disposed between the anti-shake driving part 22 and the base 232 .
- a set of positioning points 2321 is provided on the bottom surface of the base 232 , and the driving substrate 26 is fixed on the base 232 through the positioning points 2321 of the base 232 .
- the driving substrate 26 includes a connection terminal 263 and at least one conductive terminal.
- the conductive end has a split structure and the number of the conductive ends is two, that is, the at least one conductive end includes a first conductive end 261 and a second conductive end 262 .
- the first piezoelectric ceramic plate 2211 of the first piezoelectric actuator 221 and the second piezoelectric ceramic plate 2221 of the second piezoelectric actuator 222 are respectively provided and electrically connected to the on the first conductive end 261 and the second conductive end 262 of the driving substrate 26, so that the first piezoelectric actuator 221 and the second piezoelectric actuator 222 pass through the driving substrate 26 achieve circuit conduction.
- the first conductive end 261 is disposed on the same side as the first piezoelectric actuator 221
- the second conductive end 262 is disposed on the same side as the second piezoelectric actuator 222
- the connecting end 263 is arranged on the side of the anti-shake drive assembly 20 where the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are not arranged, for example, the connecting end 263 is arranged on the side of the Between the first conductive end 261 and the second conductive end 262, and the connecting end 263 is electrically connected to the first conductive end 261 and the second conductive end 262, and the connecting end 263 connects the The first conductive end 261 and the second conductive end 262 realize circuit conduction with the main board of the electronic device.
- the driving substrate 26 and the circuit board 31 are respectively fixedly connected to the main board of the electronic device to achieve circuit conduction, so as to reduce the resistance of the driving substrate 26 to the movement of the circuit board 31 .
- the driving substrate 26 can be arranged between the base 232 and the pre-pressure device 24, and the driving substrate 26 can also be arranged between the pre-pressure device 24 and the pre-pressure device 24. Between the anti-shake drive unit 22 . That is to say, the driving substrate 26 may be directly disposed on the base 232 , or indirectly disposed on the base 232 through the pre-pressing device 24 .
- the base 232 has a slot formed on its side wall, and the connecting end 263 protrudes through the slot, and realizes the circuit conduction with the main board of the electronic device.
- the circuit board 31 and the connecting end 263 extend from the same side of the anti-shake driving assembly 20, that is, the slot of the base 232 and the opening of the anti-shake movable part 21 are set on the same side , so that the circuit board 31 and the connection end 263 are electrically connected to the main board of the electronic device from the same side of the anti-shake driving assembly 20 .
- the anti-shake movable part 21 is disposed above the base 232, the circuit board 31 is disposed above the driving substrate 26, and the connection end 263 between the circuit board 31 and the driving substrate 26 is along the height direction. There is a certain gap, and the gap can prevent the circuit board 31 from contacting the driving substrate 26 during the moving process, thereby affecting the effect of optical anti-shake.
- the range of the gap is 0.1mm-0.15mm.
- the drive substrate 26 and the circuit board 31 can also be extended from different sides of the anti-shake drive assembly 20 to be electrically connected to the main board of the electronic device, that is, the base 232 and the
- the openings of the side walls of the anti-shake movable part 21 may be disposed on different sides, such as opposite sides or adjacent sides, so that the movement of the circuit board 31 will not be affected.
- FIG. 51 illustrates a modified embodiment of the anti-shake driving assembly 20 according to an embodiment of the present application, wherein, as shown in FIG. 51 , the difference from the above embodiment is that the first piezoelectric actuator 221
- the second piezoelectric actuator 222 can also be arranged relatively parallel to the Y-axis direction, that is, the length direction of the first piezoelectric actuator 221 and the second piezoelectric actuator 222 is along the Y-axis direction , that is, the width direction of the first piezoelectric actuator 221 and the second piezoelectric actuator 222 is along the Y-axis direction.
- the first piezoelectric actuator 221 produces deformation along the length direction
- the second piezoelectric actuator 222 produces deformation along the length direction
- the anti-shake movable part 21 Driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222, it moves along the Y-axis direction
- the first piezoelectric actuator 221 generates Deformation along the width direction
- the second piezoelectric actuator 222 produces deformation along the width direction
- the anti-shake movable part 21 is connected between the first piezoelectric actuator 221 and the second piezoelectric actuator 222 to move along the X-axis direction
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 first generate deformation along the length direction, and then generate deformation along the Deformation in the width direction
- the anti-shake movable part 21 is driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222 to move
- the drive of 222 realizes the rotational movement around the Z axis. That is to say, in this application, the first piezoelectric actuator 221 and the second piezoelectric actuator 222 can cooperate with each other to drive the anti-shake movable part 21 in the X-axis direction and the Y-axis direction. direction and/or rotate around the Z-axis direction, so as to realize the translation anti-shake and/or rotation anti-shake of the photosensitive assembly 30 .
- Fig. 52 illustrates another modified embodiment of the anti-shake driving assembly 20 according to the embodiment of the present application, wherein, as shown in Fig. 52, the difference from the above embodiment is that the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are arranged perpendicular to each other, that is, the length direction of the first piezoelectric actuator 221 is along the X-axis direction, and the width direction is along the Y-axis direction; the second piezoelectric actuator 221 The length direction of the actuator 222 is along the Y-axis direction, and the width direction is along the X-axis direction.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are located adjacent to the driving assembly 20 .
- the first piezoelectric actuator 221 produces deformation along the length direction
- the second piezoelectric actuator 222 produces deformation along the width direction
- the anti-shake movable part 21 Driven by the first piezoelectric actuator 221 and the second piezoelectric actuator 222, it moves along the X-axis direction
- the first piezoelectric actuator 221 generates Deformation along the width direction
- the second piezoelectric actuator 222 produces deformation along the length direction
- the first piezoelectric actuator 221 first generates deformation along the length direction, and then generates deformation along the width direction
- the second piezoelectric actuator 221 generates deformation along the width direction.
- the piezoelectric actuator 222 first produces deformation along the width direction, and then produces deformation along the length direction. Driven by the drive, it first moves along the X-axis direction, and then moves along the Y-axis direction, that is, the anti-shake movable part 21 can move in the plane where XOY is located. That is to say, in this application, the first piezoelectric actuator 221 and the second piezoelectric actuator 222 can cooperate with each other to drive the anti-shake movable part 21 in the X-axis direction and the Y-axis direction. Move in the direction.
- the camera module based on the embodiment of the present application is clarified, wherein the camera module adopts a new type of piezoelectric actuator as a driving element to not only provide a sufficient driving force, but also provide precision Higher and longer drive performance to meet the optical performance adjustment requirements of the camera module, for example, optical image stabilization requirements.
- an anti-shake driving assembly 20 which includes: an anti-shake fixing part 23 having a housing cavity 230;
- the anti-shake movable part 21 inside is used to divide the accommodating cavity 230 into a first part 2301 and a second part 2302 through the anti-shake movable part 21, wherein the anti-shake movable part 21 is suitable for installing a photosensitive The assembly 30 is thereon; the anti-shake driving part 22 disposed on the second part 2302 of the receiving cavity 230, wherein the anti-shake driving part 22 includes a first frictionally coupled to the anti-shake movable part 21
- a piezoelectric actuator 221 and a second piezoelectric actuator 222, the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are suitable for actuating the anti-shake movable part 21 Move in the XOY plane set by the X-axis and the Y-axis or rotate in the XOY plane around the Z-axis perpendicular to the X
- the anti-shake fixing part 23 includes a base 232 and an upper cover 231 fastened with the base 232, the first part 2301 of the accommodation cavity 230 is formed on the upper cover 231 Between the cover 231 and the anti-shake movable part 21 , the second part 2302 of the accommodation cavity 230 is formed between the base 232 and the anti-shake movable part 21 .
- the anti-shake driving assembly 20 there is a gap between the anti-shake movable part 21 and the base 232, and there is a gap between the anti-shake movable part 21 and the upper cover 231, through In this way, the anti-shake movable part 21 is suspended in the receiving cavity 230 of the anti-shake fixed part 23 .
- the anti-shake movable part 21 is smoothly clamped between the first piezoelectric actuator 221 and the guide element 251 and the second between the piezoelectric actuator 222 and the guide element 251 .
- the anti-shake movable part 21 includes a carrier body 211 and a carrier extension arm 212 extending outward from the carrier body 211, wherein the guide element 251 is clamped Hold between the lower surface of the upper cover 231 and the upper surface of the carrier extension arm 212, the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are frictionally coupled to the The lower surface of the carrier extension arm 212.
- the anti-shake movable part 21 further includes a friction plate 213 formed on the lower surface of the carrier extension arm 212, the first piezoelectric actuator 221 and the The second piezoelectric actuator 222 is frictionally coupled to the friction plate 213 .
- the anti-shake drive assembly 20 further includes a first guide groove 252 concavely formed on the upper surface of the carrier extension arm 212, and the guide element 251 is accommodated In the first guide groove 252, the guide element 251 and the first guide groove 252 form a guide device for guiding the anti-shake movable part 21 and the photosensitive assembly 30 to move 25, wherein at least a part of the guide element 251 protrudes from the groove and is in contact with the lower surface of the upper cover 231, in this way, the guide element 251 is clamped on the upper cover 231 and the upper surface of the carrier extension arm 212 .
- the guide element 251 is a guide element 251 .
- the guide element 251 is a slider.
- the first guide groove 252 extends along the direction set by the X-axis
- the guide device 25 further includes a recess formed on the upper cover 231
- the second guide groove on the lower surface of the second guide groove extends along the direction set by the Y-axis.
- the first guide groove 252 extends along the direction set by the Y-axis
- the guide device 25 further includes a recess formed on the upper cover 231
- the second guide groove on the lower surface of the second guide groove extends along the direction set by the X-axis.
- the first guide segment and the second guide groove are oppositely arranged and cross each other.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 have the same height dimension.
- the height dimension of the first piezoelectric actuator 221 and the second piezoelectric actuator 222 is 0.7mm-0.9mm.
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are traveling wave piezoelectric actuators, wherein the first piezoelectric actuator
- the electric actuator 221 includes a first piezoelectric ceramic plate 2211 and a first friction driving part 2212 protruding from the first piezoelectric ceramic plate 2211, and the first piezoelectric ceramic plate 2211 is adapted to generate deformation to drive the first friction drive part 2212 to perform unidirectional yaw reciprocating motion;
- the second piezoelectric actuator 222 includes a second piezoelectric ceramic plate 2221 and protrudes from the second piezoelectric ceramic plate
- the second friction driving part 2222 of 2221, the second piezoelectric ceramic plate 2221 is adapted to be deformed after being electrically driven to drive the second friction driving part 2222 to perform unidirectional yaw reciprocating motion.
- the first piezoelectric ceramic plate 2211 is arranged on the anti-shake fixing part 23, and the first friction driving part 2212 is frictionally coupled to the anti-shake fixed part 23.
- the moving part 21 and the second piezoelectric ceramic plate 2221 are disposed on the anti-shake fixed part 23 , and the second friction driving part 2222 is frictionally coupled to the anti-shake movable part 21 .
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are arranged in parallel on opposite sides of the photosensitive assembly 30 .
- the first piezoelectric actuator 221 and the second piezoelectric actuator 222 are relative to the photosensitive assembly 30 with the X-axis or the Y-axis as The symmetry axis is symmetrically arranged on two opposite sides of the photosensitive component 30 .
- the first piezoelectric actuator 221 is adapted to deform along the direction set by the X-axis to actuate the anti-shake movable part 21 and the photosensitive
- the assembly 30 moves along the direction set by the X-axis
- the second piezoelectric actuator 222 is adapted to deform along the direction set by the X-axis to actuate the anti-shake movable
- the part 21 and the photosensitive assembly 30 move along the direction set by the X axis, so as to actuate the anti-shake through the first piezoelectric actuator 221 and the second piezoelectric actuator 222
- the movable part 21 and the photosensitive assembly 30 move along the direction set by the X-axis;
- the first piezoelectric actuator 221 is adapted to deform along the direction set by the Y-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 set along the Y-axis.
- the second piezoelectric actuator 222 is adapted to deform along the direction set by the Y-axis to move the anti-shake movable part 21 and the photosensitive element 30 along the set direction.
- the direction set by the Y-axis is moved, so that the anti-shake movable part 21 and the photosensitive element 30 are moved along the moving in the direction set by the Y-axis;
- the first piezoelectric actuator 221 is adapted to deform along the first direction set by the X-axis to actuate the anti-shake movable part 21 and the photosensitive assembly 30 along the X-axis.
- the set first direction moves
- the second piezoelectric actuator 222 is adapted to deform along the second direction opposite to the first direction set by the X-axis to actuate the
- the anti-shake movable part 21 and the photosensitive assembly 30 move along the second direction set by the X axis, so as to pass through the first piezoelectric actuator 221 and the second piezoelectric actuator 222 Actuating the photosensitive assembly 30 to rotate around the Z axis in the XOY plane;
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
本申请提出一种防抖驱动组件,包括防抖固定部、防抖可动部和防抖驱动部,防抖驱动部适于作动防抖可动部在X轴和Y轴所设定的XOY平面内移动或绕着垂直于X轴和Y轴的Z轴在XOY平面内旋转。所述防抖驱动组件具有足够大的驱动力,提供精度更高和行程更长的驱动性能,以满足摄像模组的光学防抖需求。本申请还提出一种用于驱动镜头的驱动组件,驱动组件包括驱动载体、提供驱动力的驱动元件和摩擦板,摩擦板一端与驱动载体固定连接,另一端与驱动元件作用连接,使得驱动元件能够驱动摩擦板沿调整方向移动。所述驱动组件结构更加紧凑,同时能够足够大的驱动力,满足摄像模组的驱动需求。
Description
本申请涉及摄像模组领域,尤其涉及一种防抖驱动组件和摄像模组,其中,所述防抖驱动组件通过一个所述防抖驱动部能够所述摄像模组在多个方向上的光学防抖。
本申请还涉及一种摄像模组的防抖方法,其通过具有特殊驱动特性的第一压电致动器和第二压电致动器并配合一个防抖可动部实现所述摄像模组在多个方向上的光学防抖。
本申请还涉及一种用于驱动镜头的驱动组件、用于驱动镜头的驱动组件的组装方法和一种摄像模组。
这里的描述仅提供与本申请有关的背景信息,而不必然地构成现有技术。
随着移动电子设备的普及,被用于移动电子设备的用于帮助使用者获取影像(例如,视频或者图像)的摄像模组的相关技术得到了迅猛的发展和进步,并且在近年来,摄像模组在诸如医疗、安防、工业生产等诸多的领域都得到了广泛的应用。
为了满足越来越广泛的市场需求,高像素、大芯片、小尺寸是现有摄像模组不可逆转的发展趋势。随着感光芯片朝着高像素和大芯片的方向发展,与感光芯片适配的光学部件(例如,滤光元件、光学镜头)的尺寸也逐渐增大,这给用于驱动光学部件以进行光学性能调整(例如,光学对焦、光学防抖等)的驱动元件带来的新的挑战。
具体地,现有的用于驱动光学部件的驱动元件为电磁式马达,例如,音圈马达(Voice Coil Motor:VCM)、形状记忆合金驱动器(Shape of Memory Alloy Actuator:SMA)等。然而,随着光学部件尺寸增加而导致的重量增加,现有的电磁式马达已逐渐无法提供足够的驱动力来驱动光学部件移动。量化来看,现有的音圈马达和形状记忆合金驱动器仅适于驱动重量小于100mg的光学部件,也就是,如果光学部件的重量超过100mg,现有的驱动器将无法满足摄像模组的应用需求。
此外,随着移动终端设备朝着小型化和薄型化的方向发展,驱动元件内部的部件布设密度也随之提高。相应地,现有的音圈马达内部设有线圈和磁铁,当两个磁铁距离过近(小于7mm),其内部磁场会产生相互影响,导致磁铁产生位移或抖动,降低其驱动控制的稳定性。
因此,需要一种适配的用于摄像模组的新型驱动方案,且,新型的驱动器不仅能满足摄像模组对于光学性能调整的驱动要求,且能够满足摄像模组轻型化和薄型化的发展需求。
随着生活水平的升高,消费者对于手机、平板等终端设备的摄像功能要求越来越高,不仅要求实现背景虚化、夜间拍摄等效果,还对远摄提出了需求,消费者需要能够清楚地拍摄不同距离远处画面的终端设备。
为实现上述远摄功能,通常在摄像模组中增加一光学变焦镜头,形成一光学变焦模组。光学变焦模组是通过改变光学变焦镜头镜片之间的距离来改变镜头的焦距以到达变焦的目的,其可以比较清晰的拍摄不同距离的远处的物体,且其所成图像的成像品质也相对较高。这里变焦是指改变焦距以便拍摄不同距离的景物。
然而,由于消费者需求的提升,光学变焦模组的参数规格不断增加,镜片的尺寸和重量不断的变大,对驱动镜片移动的马达的推力要求也越来越高,从而马达的体积也不断增加。并且,现有电磁式马达方案行程较短,体积较大,还存在电磁干扰,难以满足光学变焦对镜片移动的需求。
为实现远摄功能,通常在摄像模组中增加光学变焦镜头,形成光学变焦模组。光学变焦模组是通过改变光学变焦镜头镜片之间的距离来改变镜头的焦距以到达变焦的目的,其可以比较清晰的拍摄不同距离的远处的物体,且其所成图像的成像品质也相对较高。这里变焦是指改变焦距以便拍摄不同距离的景物。
现有的用于驱动光变摄像模组的驱动马达采用音圈马达(Voice Coil Motor:VCM)、形状记忆合金驱动器(Shape of Memory Alloy Actuator:SMA)等。随着对于摄像模组的成像性能的要求提高,对于摄像模组的各个组件,尤其是变焦组件提出了更高的要求,伴随着尺寸增加方面的限制减小,为了实现更强的功能,摄像模组的组件设计也带来了组件尺寸的增大,从而导致组件的重量也进一步增大。在这种情况下,传统的电磁式马达不再能够提供足够的驱动力。例如,现有的音圈马达驱动器仅能够驱动重量小于100mg的光学镜头,而记忆合金马达则需要较大的行程空间设置。也就是,如果摄像模组中的待驱动的组件的重量超过100mg,现有的驱动器将无法满足摄像模组的应用需求或者需要增加非常多的驱动器尺寸,以提供较大推力。因此,必须为摄像模组开发新一代的驱动方案。
发明内容
按照本申请的第一种设计方案,提出一种防抖驱动组件和摄像模组。
本申请的一优势在于提供了一种防抖驱动组件和摄像模组,其中,所述摄像模组采用新型的压电致动器作为驱动元件以不仅能够提供足够大的驱动力,而且,能够提供精度更高和行程更长的驱动性能,以满足所述摄像模组的光学性能调整的需求,例如,光学防抖的需求。
本申请的又一优势在于提供了一种防抖驱动组件和摄像模组,其中,采用合理的布设方案将所述压电致动器布设于所述摄像模组中,以满足摄像模组的结构和尺寸要求。
本申请的另一优势在于提供了一种防抖驱动组件和摄像模组,其中,所述防抖驱动组件仅配置一个防抖可动部来实现所述摄像模组在XOY平面内的防抖,也就是,所述防抖驱动组件具有相对简化的驱动配置。
通过下面的描述,本申请的其它优势和特征将会变得显而易见,并可以通过权利要求书中特别指出的手段和组合得到实现。
为实现上述至少一优势,本申请提供一种防抖驱动组件,其包括:
防抖固定部;
防抖可动部,其中,包括感光芯片的感光组件适于可联动地安装于所述防抖可动部;以及
设置于所述防抖固定部和所述防抖可动部之间的防抖驱动部,所述防抖驱动部包括摩擦地耦接于所述防抖可动部的第一压电致动器和第二压电致动器;
其中,所述第一压电致动器和所述第二压电致动器相互平行地布设于该感光组件的相对的两侧,且所述第一压电致动器和所述第二压电致动器适于作动所述防抖可动部和该感光组件在X轴和Y轴所设定的XOY平面内移动或绕着垂直于所述X轴和所述Y轴的Z轴在所述XOY平面内旋转。
在根据本申请的防抖驱动组件中,所述第一压电致动器和所述第二压电致动器相对于该感光组件以所述X轴或者所述Y轴为对称轴被对称地布置于该感光组件的相对的两侧。
在根据本申请的防抖驱动组件中,所述第一压电致动器和所述第二压电致动器为行波式压电致动器,其中,所述第一压电致动器包括第一压电陶瓷板和突出于所述第一压电陶瓷板的第一摩擦驱动部,所述第一压电陶瓷板适于在被电驱动后发生形变以带动所述第一摩擦驱动部做单向偏摆往复运动;其中,所述第二压电致动器包括第二压电陶瓷板和突出于所述第二压电陶瓷板的第二摩擦驱动部,所述第二压电陶瓷板适于在被电驱动后发生形变以带动所述第二摩擦驱动部做单向偏摆往复运动。
在根据本申请的防抖驱动组件中,所述第一压电致动器适于沿着所述X轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动,且所述第二压电致动器适于沿着所述X轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动;
其中,所述第一压电致动器适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动,且所述第二压电致动器适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动;
其中,所述第一压电致动器适于沿着所述X轴所设定的第一方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的第一方向进行移动,且所述第二压电致动器适于沿着所述X轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的第二方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动该感光组件绕所述Z轴在所述XOY平面内进行旋转;
其中,所述第一压电致动器适于沿着所述Y轴所设定的第一方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的第一方向进行移动,且所述第二压电致动器适于沿着所述Y轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的第二方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动该感光组件绕所述Z轴在所述XOY平面内进行旋转。
在根据本申请的防抖驱动组件中,所述第一压电致动器和所述第二压电致动器具有长方形结构,其具有沿着长度方向的两条相对的长边和沿着宽度方向的两条相对的短边。
在根据本申请的防抖驱动组件中,所述第一压电致动器和所述第二压电致动器的长度方向为所述 X轴方向,所述第一压电致动器和所述第二压电致动器的短边方向为所述Y轴方向。
在根据本申请的防抖驱动组件中,所述第一压电致动器和所述第二压电致动器的长度方向为所述Y轴方向,所述第一压电致动器和所述第二压电致动器的短边方向为所述X轴方向。
在根据本申请的防抖驱动组件中,所述防抖可动部被平稳地支持于所述第一压电致动器的第一摩擦驱动部和所述第二压电致动器的第二摩擦驱动部上。
在根据本申请的防抖驱动组件中,所述第一压电陶瓷板被设置于所述防抖固定部,所述第一摩擦驱动部摩擦地耦接于所述防抖可动部、所述第二压电陶瓷板被设置于所述防抖固定部,所述第二摩擦驱动部摩擦地耦接于所述防抖可动部。
在根据本申请的防抖驱动组件中,所述第一压电致动器和所述第二压电致动器具有相同的高度尺寸。
在根据本申请的防抖驱动组件中,所述第一压电致动器和所述第二压电致动器的高度尺寸为0.7mm-0.9mm。
在根据本申请的防抖驱动组件中,所述防抖固定部具有收容腔,所述防抖可动部被悬持于所述防抖固定部的收容腔内。
在根据本申请的防抖驱动组件中,所述防抖固定部包括基底和与所述基底相扣合的上盖,所述收容腔形成于所述上盖和所述基底之间。
在根据本申请的防抖驱动组件中,所述防抖可动部与所述基底之间具有间隙,所述防抖可动部与所述上盖之间具有间隙,通过这样的方式,所述防抖可动部被悬持于所述防抖固定部的收容腔内。
在根据本申请的防抖驱动组件中,所述防抖可动部包括载体主体和自所述载体主体向外延伸的载体延伸臂,其中,所述第一压电致动器的第一摩擦驱动部和所述第二压电致动器的第二摩擦驱动部摩擦地耦接于所述载体延伸臂的下表面。
在根据本申请的防抖驱动组件中,所述载体主体具有低于所述载体延伸臂的安置槽,其中,该感光组件适于安装于所述安置槽内。
在根据本申请的防抖驱动组件中,所述载体延伸臂与所述基底之间具有容置空间,所述第一压电致动器和所述第二压电致动器被收容于所述容置空间内。
在根据本申请的防抖驱动组件中,所述防抖可动部进一步包括形成于所述载体延伸臂的下表面的摩擦板,所述第一压电致动器的第一摩擦驱动部和所述第二压电致动器的第二摩擦驱动部摩擦地耦接于所述摩擦板。
在根据本申请的防抖驱动组件中,所述防抖驱动组件进一步包括设置于所述防抖可动部和所述基底之间的驱动基板,所述驱动基板包括至少一导电端和自所述导电端往外延伸的连接端,所述第一压电致动器和所述第二压电致动器电连接于所述至少一电连接端。
在根据本申请的防抖驱动组件中,所述至少一导电端包括第一导电端和第二导电端,所述第一压电致动器电连接于所述第一导电端,所述第二压电致动器电连接于所述第二导电端。
在根据本申请的防抖驱动组件中,所述防抖可动部具有形成于所述载体主体的侧壁的开槽,所述开槽被配置为允许该感光组件的线路板自所述开槽伸出所述安置槽。
在根据本申请的防抖驱动组件中,所述基底具有形成于其侧壁的开口,其中,所述连接端自所述至少一导电端往外延伸并穿过所述开口。
在根据本申请的防抖驱动组件中,所述开口和所述开槽具有高度差。
在根据本申请的防抖驱动组件中,所述防抖驱动组件进一步包括设置于所述防抖驱动部和所述防抖固定部之间的预压力装置,以通过所述预压力装置所提供的预压力迫使所述防抖驱动部摩擦地耦接于所述防抖可动部。
在根据本申请的防抖驱动组件中,所述预压力装置包括设置于所述基底和所述第一压电致动器的第一压电陶瓷板之间的第一弹性元件,以通过所述第一弹性元件自身的弹力产生所述预压力以迫使所述第一压电致动器的第一摩擦驱动部抵触于所述摩擦板,通过这样的方式使得所述第一压电致动器的第一摩擦驱动部摩擦地耦接于所述摩擦板;所述预压力装置还包括设置于所述基底和所述第二压电致动器的第二压电陶瓷板之间的第二弹性元件,以通过所述第二弹性元件自身的弹力产生的所述预压力迫使所述第二压电致动器的第二摩擦驱动部抵触于所述摩擦板,通过这样的方式使得所述第二压电致动器的第二摩擦驱动部摩擦地耦接于所述摩擦板。
在根据本申请的防抖驱动组件中,所述第一弹性元件和所述第二弹性元件的厚度尺寸为10um至50um。
在根据本申请的防抖驱动组件中,所述防抖驱动组件进一步包括设置于所述载体延伸臂的上表面和所述上盖之间的导引装置,所述导引装置适于导引所述防抖可动部在所述X轴和所述Y轴所设定的所述XOY平面内移动。
根据本申请的另一方面,还提供了一种摄像模组,其包括:
光学镜头;
感光组件,包括线路板和电连接于所述线路板的感光组件,其中,所述光学镜头被保持于所述感光组件的感光路径上;以及
如上所述的防抖驱动组件,其中,所述感光组件被安装于所述防抖驱动组件的防抖可动部。
按照本申请的第二种设计方案,提出另一种防抖驱动组件和摄像模组。
本申请的一优势在于提供了一种防抖驱动组件和摄像模组,其中,所述摄像模组采用新型的压电致动器作为驱动元件以不仅能够提供足够大的驱动力,而且,能够提供精度更高和行程更长的驱动性能,以满足所述摄像模组的光学性能调整的需求,例如,光学防抖的需求。
本申请的另一优势在于提供了一种防抖驱动组件和摄像模组,其中,采用合理的布设方案将所述压电致动器布设于所述摄像模组中,以满足摄像模组的结构和尺寸要求。
本申请的又一优势在于提供了一种防抖驱动组件和摄像模组,其中,所述防抖驱动组件仅配置一个防抖可动部来实现所述摄像模组在XOY平面内的防抖,也就是,所述防抖驱动组件具有相对简化的驱动配置。
本申请的又一优势在于提供了一种防抖驱动组件和摄像模组,其中,所述防抖驱动组件的导引装置和防抖驱动部被相对地设置于所述防抖可动部的两侧且所述导引装置、所述防抖可动部和所述防抖驱动部都被夹持地设置于所述防抖固定部所形成的收容腔内,这样,所述导引装置的导引元件除了在 起到导引所述防抖可动部的移动外,还起到提供预压力以保持所述防抖驱动部摩擦耦接于所述防抖可动部。
通过下面的描述,本申请的其它优势和特征将会变得显而易见,并可以通过权利要求书中特别指出的手段和组合得到实现。
为实现上述至少一优势,本申请提供一种防抖驱动组件,其包括:
具有收容腔的防抖固定部;
被悬持地设置于所述防抖固定部的收容腔内的防抖可动部,以通过所述防抖可动部将所述收容腔分为上部和下部,其中,所述防抖可动部适于安装感光组件于其上;
设置于所述收容腔的下部的防抖驱动部,其中,所述防抖驱动部包括摩擦地耦接于所述防抖可动部的第一压电致动器和第二压电致动器,所述第一压电致动器和所述第二压电致动器适于作动所述防抖可动部在X轴和Y轴所设定的XOY平面内移动或绕着垂直于所述X轴和所述Y轴的Z轴在所述XOY平面内旋转;以及
被夹持地设置于所述收容腔的上部的导引元件,其中,被夹持的所述导引元件产生迫使所述防抖可动部抵触于所述第一压电致动器和所述第二压电致动器的预压力以通过所述预压力使得所述第一压电致动器和所述第二压电致动器摩擦地耦接于所述防抖可动部。
在根据本申请的防抖驱动组件中,所述防抖固定部包括基底和与所述基底相扣合的上盖,所述收容腔的上部形成于所述上盖和所述防抖可动部之间,所述收容腔的下部形成于所述基底和所述防抖可动部之间。
在根据本申请的防抖驱动组件中,所述防抖可动部与所述基底之间具有间隙,所述防抖可动部与所述上盖之间具有间隙,通过这样的方式,所述防抖可动部被悬持于所述防抖固定部的收容腔内。
在根据本申请的防抖驱动组件中,所述防抖可动部被平稳地夹持于所述第一压电致动器和所述导引元件之间以及所述第二压电致动器和所述导引元件之间。
在根据本申请的防抖驱动组件中,所述防抖可动部包括载体主体和自所述载体主体向外延伸的载体延伸臂,其中,所述导引元件被夹持于所述上盖的下表面和所述载体延伸臂的上表面之间,所述第一压电致动器和所述第二压电致动器摩擦地耦接于所述载体延伸臂的下表面。
在根据本申请的防抖驱动组件中,所述防抖可动部进一步包括形成于所述载体延伸臂的下表面的摩擦板,所述第一压电致动器和所述第二压电致动器摩擦地耦接于所述摩擦板。
在根据本申请的防抖驱动组件中,所述防抖驱动组件进一步包括凹陷地形成于所述载体延伸臂的上表面的第一导引槽,所述导引元件被收容于所述第一导引槽内,所述导引元件和所述第一导引槽形成用于导引所述防抖可动部和该感光组件进行移动的导引装置,其中,所述导引元件的至少一部分突出于所述凹槽并抵触于所述上盖的下表面,通过这样的方式,所述导引元件被夹持于所述上盖的下表面和所述载体延伸臂的上表面之间。
在根据本申请的防抖驱动组件中,所述导引元件为滚珠。
在根据本申请的防抖驱动组件中,所述导引元件为滑块。
在根据本申请的防抖驱动组件中,所述第一导引槽沿着所述X轴所设定的方向延伸,所述导引装 置进一步包括凹陷地形成于所述上盖的下表面的第二导引槽,所述第二导引槽沿着所述Y轴所设定的方向延伸。
在根据本申请的防抖驱动组件中,所述第一导引槽沿着所述Y轴所设定的方向延伸,所述导引装置进一步包括凹陷地形成于所述上盖的下表面的第二导引槽,所述第二导引槽沿着所述X轴所设定的方向延伸。
在根据本申请的防抖驱动组件中,所述第一导引段和所述第二导引槽相对设置且相互交叉。
在根据本申请的防抖驱动组件中,所述第一压电致动器和所述第二压电致动器具有相同的高度尺寸。
在根据本申请的防抖驱动组件中,所述第一压电致动器和所述第二压电致动器的高度尺寸为0.7mm-0.9mm。
在根据本申请的防抖驱动组件中,所述第一压电致动器和所述第二压电致动器为行波式压电致动器,其中,所述第一压电致动器包括第一压电陶瓷板和突出于所述第一压电陶瓷板的第一摩擦驱动部,所述第一压电陶瓷板适于在被电驱动后发生形变以带动所述第一摩擦驱动部做单向偏摆往复运动;其中,所述第二压电致动器包括第二压电陶瓷板和突出于所述第二压电陶瓷板的第二摩擦驱动部,所述第二压电陶瓷板适于在被电驱动后发生形变以带动所述第二摩擦驱动部做单向偏摆往复运动。
在根据本申请的防抖驱动组件中,所述第一压电陶瓷板被设置于所述防抖固定部,所述第一摩擦驱动部摩擦地耦接于所述防抖可动部、所述第二压电陶瓷板被设置于所述防抖固定部,所述第二摩擦驱动部摩擦地耦接于所述防抖可动部。
在根据本申请的防抖驱动组件中,所述第一压电致动器和所述第二压电致动器相互平行地布设于该感光组件的相对的两侧。
在根据本申请的防抖驱动组件中,所述第一压电致动器和所述第二压电致动器相对于该感光组件以所述X轴或者所述Y轴为对称轴对称地布置于该感光组件的相对的两侧。
在根据本申请的防抖驱动组件中,所述第一压电致动器适于沿着所述X轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动,且所述第二压电致动器适于沿着所述X轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动;
其中,所述第一压电致动器适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动,且所述第二压电致动器适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动;
其中,所述第一压电致动器适于沿着所述X轴所设定的第一方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的第一方向进行移动,且所述第二压电致动器适于沿着所述X轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的第 二方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动该感光组件绕所述Z轴在所述XOY平面内进行旋转;
其中,所述第一压电致动器适于沿着所述Y轴所设定的第一方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的第一方向进行移动,且所述第二压电致动器适于沿着所述Y轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的第二方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动该感光组件绕所述Z轴在所述XOY平面内进行旋转。
在根据本申请的防抖驱动组件中,所述防抖驱动组件进一步包括设置于所述防抖可动部和所述基底之间的驱动基板,所述驱动基板包括至少一导电端和自所述导电端往外延伸的连接端,所述第一压电致动器和所述第二压电致动器电连接于所述至少一电连接端。
在根据本申请的防抖驱动组件中,所述至少一导电端包括第一导电端和第二导电端,所述第一压电致动器电连接于所述第一导电端,所述第二压电致动器电连接于所述第二导电端。
在根据本申请的防抖驱动组件中,所述防抖可动部具有形成于所述载体主体的侧壁的开槽,所述开槽被配置为允许该感光组件的线路板自所述开槽伸出所述安置槽。
在根据本申请的防抖驱动组件中,所述基底具有形成于其侧壁的开口,其中,所述连接端子所述至少一导电端往外延伸并穿过所述开口。
在根据本申请的防抖驱动组件中,所述开口和所述开槽具有高度差。
在根据本申请的防抖驱动组件中,所述防抖驱动组件进一步包括设置于所述防抖驱动部和所述防抖固定部之间的预压力装置,以通过所述预压力装置所提供的预压力迫使所述防抖驱动部摩擦地耦接于所述防抖可动部。
在根据本申请的防抖驱动组件中,所述预压力装置包括设置于所述基底和所述第一压电致动器的第一压电陶瓷板之间的第一弹性元件,以通过所述第一弹性元件自身的弹力产生所述预压力以迫使所述第一压电致动器的第一摩擦驱动部抵触于所述摩擦板,通过这样的方式使得所述第一压电致动器的第一摩擦驱动部摩擦地耦接于所述摩擦板;所述预压力装置还包括设置于所述基底和所述第二压电致动器的第二压电陶瓷板之间的第二弹性元件,以通过所述第二弹性元件自身的弹力产生的所述预压力迫使所述第二压电致动器的第二摩擦驱动部抵触于所述摩擦板,通过这样的方式使得所述第二压电致动器的第二摩擦驱动部摩擦地耦接于所述摩擦板。
在根据本申请的防抖驱动组件中,所述第一弹性元件和所述第二弹性元件的厚度尺寸为10um至50um。
根据本申请的另一方面,还提供了一种摄像模组,其包括:
光学镜头;
感光组件,包括线路板和电连接于所述线路板的感光组件,其中,所述光学镜头被保持于所述感光组件的感光路径上;以及
如上所述的防抖驱动组件,其中,所述感光组件被安装于所述防抖驱动组件的防抖可动部。
按照本申请的第三种设计方案,提出又一种防抖驱动组件和摄像模组。
本申请的一优势在于提供了一种防抖驱动组件和摄像模组,其中,所述摄像模组采用新型的压电致动器作为驱动元件以不仅能够提供足够大的驱动力,而且,能够提供精度更高和行程更长的驱动性能,以满足所述摄像模组的光学性能调整的需求,例如,光学防抖的需求。
本申请的另一优势在于提供了一种防抖驱动组件和摄像模组,其中,采用合理的布设方案将所述压电致动器布设于所述摄像模组中,以满足摄像模组的结构和尺寸要求。
本申请的又一优势在于提供了一种防抖驱动组件和摄像模组,其中,所述防抖驱动组件仅配置一个防抖可动部来实现所述摄像模组在XOY平面内的防抖,也就是,所述防抖驱动组件具有相对简化的驱动配置。
本申请的又一优势在于提供了一种防抖驱动组件和摄像模组,其中,所述防抖驱动组件包括防抖固定部、防抖驱动部、防抖可动部、预压装置、导引装置和驱动基板,其中,所述防抖驱动部、所述驱动基板和所述预压装置被设置于所述防抖可动部的一侧,所述导引装置被设置于所述防抖可动部的相对的另一侧,其中,当所述防抖驱动部被驱动时,所述防抖驱动部与所述防抖可动部之间的摩擦力大于所述导引装置所遇到的摩擦力,通过这样的方式,使得所述防抖驱动部能够驱动所述防抖可动部,且所述导引装置在对所述防抖可动部的移动进行导引的同时不会对所述防抖可动部的移动造成干扰。
通过下面的描述,本申请的其它优势和特征将会变得显而易见,并可以通过权利要求书中特别指出的手段和组合得到实现。
为实现上述至少一优势,本申请提供一种防抖驱动组件,其包括:
具有收容腔的防抖固定部;
被悬持地设置于所述防抖固定部的收容腔内的防抖可动部,其中,所述防抖可动部适于安装感光组件于其上,所述收容腔被所述防抖可动部分为第一部分和第二部分;
被设置于所述收容腔的第一部分的防抖驱动部和预压力装置,其中,所述防抖驱动部包括通过所述预压力装置摩擦地耦接于所述防抖可动部的第一压电致动器和第二压电致动器,所述第一压电致动器和所述第二压电致动器适于作动所述防抖可动部在X轴和Y轴所设定的XOY平面内移动或绕着垂直于所述X轴和所述Y轴的Z轴在所述XOY平面内旋转;以及
被设置于所述收容腔的第二部分的用于导引所述防抖可动部沿着所述X轴所设定的方向和/或所述Y轴所设定的方向进行移动的导引装置;
其中,当所述防抖驱动部被驱动时,所述防抖驱动部与所述防抖可动部之间的摩擦力大于所述导引装置在所述第二部分遇到的摩擦力。
在根据本申请的防抖驱动组件中,所述防抖固定部包括基底和与所述基底相扣合的上盖,所述收容腔形成于所述上盖和所述基底之间,所述第一部分形成于所述上盖与所述防抖可动部之间,所述第二部分形成于所述基底和所述防抖可动部之间。
在根据本申请的防抖驱动组件中,所述防抖驱动部和所述预压力装置被夹持地设置于所述防抖可动部和所述基底之间,所述导引装置被夹持地设置于所述上盖和所述防抖可动部之间,其中,当所述第一压电致动器和所述第二压电致动器被驱动时,所述第一压电致动器和所述第二压电致动器与所述 防抖可动部之间的摩擦力大于所述导引装置与所述上盖之间的摩擦力。
在根据本申请的防抖驱动组件中,所述预压力装置包括设置于所述基底和所述第一压电致动器之间的第一弹性元件,以通过所述第一弹性元件自身的弹力产生所述预压力以迫使所述第一压电致动器抵触于所述防抖可动部,通过这样的方式使得所述第一压电致动器摩擦地耦接于所述防抖可动部;所述预压力装置还包括设置于所述基底和所述第二压电致动器的第二压电陶瓷板之间的第二弹性元件,以通过所述第二弹性元件自身的弹力产生的所述预压力迫使所述第二压电致动器抵触于所述防抖可动部,通过这样的方式使得所述第二压电致动器摩擦地耦接于所述防抖可动部。
在根据本申请的防抖驱动组件中,所述第一弹性元件和所述第二弹性元件由黏着剂固化形成。
在根据本申请的防抖驱动组件中,所述第一弹性元件和所述第二弹性元件的厚度尺寸为10um至50um。
在根据本申请的防抖驱动组件中,所述防抖可动部包括载体主体、自所述载体主体向外延伸的载体延伸臂和形成于所述载体延伸臂的下表面的摩擦板,其中,通过所述第一弹性元件和所述第二弹性元件使得所述第一压电致动器和所述第二压电致动器摩擦地耦接于所述防抖可动部的摩擦板。
在根据本申请的防抖驱动组件中,所述导引装置包括凹陷地形成于所述载体延伸臂的上表面的第一导引槽和设置于所述第一导引槽内的滚珠,其中,所述滚珠的至少一部分突出于所述第一导引槽并抵触于所述上盖的下表面,通过这样的方式使得,在所述防抖可动部和该感光组件被所述第一压电致动器和所述第二压电致动器所作动时所述滚珠与所述上盖的下表面之间存在摩擦。
在根据本申请的防抖驱动组件中,所述第一导引槽沿着所述X轴所设定的方向延伸,所述导引装置进一步包括凹陷地形成于所述上盖的下表面的第二导引槽,所述第二导引槽沿着所述Y轴所设定的方向延伸。
在根据本申请的防抖驱动组件中,所述第一导引槽沿着所述Y轴所设定的方向延伸,所述导引装置进一步包括凹陷地形成于所述上盖的下表面的第二导引槽,所述第二导引槽沿着所述X轴所设定的方向延伸。
在根据本申请的防抖驱动组件中,所述第一导引槽段和所述第二导引槽段相对设置且相互交叉。
在根据本申请的防抖驱动组件中,所述导引装置包括凹陷地形成于所述载体延伸臂的上表面的导槽和设置于所述导槽内的滑块,其中,所述滑块的至少一部分突出于所述导槽并抵触于所述上盖的下表面,通过这样的方式,所述滑块被夹持于所述上盖的下表面和所述载体延伸臂的上表面之间。
在根据本申请的防抖驱动组件中,所述防抖可动部被平稳地支持于所述第一压电致动器和所述第二压电致动器上。
在根据本申请的防抖驱动组件中,所述第一压电致动器和所述第二压电致动器具有相同的高度尺寸。
在根据本申请的防抖驱动组件中,所述第一压电致动器和所述第二压电致动器的高度尺寸为0.7mm-0.9mm。
在根据本申请的防抖驱动组件中,所述第一压电致动器和所述第二压电致动器为行波式压电致动器,其中,所述第一压电致动器包括第一压电陶瓷板和突出于所述第一压电陶瓷板的第一摩擦驱动 部,所述第一压电陶瓷板适于在被电驱动后发生形变以带动所述第一摩擦驱动部做单向偏摆往复运动;其中,所述第二压电致动器包括第二压电陶瓷板和突出于所述第二压电陶瓷板的第二摩擦驱动部,所述第二压电陶瓷板适于在被电驱动后发生形变以带动所述第二摩擦驱动部做单向偏摆往复运动。
在根据本申请的防抖驱动组件中,所述第一压电陶瓷板被设置于所述防抖固定部,所述第一摩擦驱动部摩擦地耦接于所述防抖可动部、所述第二压电陶瓷板被设置于所述防抖固定部,所述第二摩擦驱动部摩擦地耦接于所述防抖可动部。
在根据本申请的防抖驱动组件中,所述第一压电致动器和所述第二压电致动器相互平行地布设于该感光组件的相对的两侧。
在根据本申请的防抖驱动组件中,所述第一压电致动器和所述第二压电致动器相对于该感光组件以所述X轴或者所述Y轴作为对称轴被对称地布置于该感光组件的相对的两侧。
在根据本申请的防抖驱动组件中,所述第一压电致动器适于沿着所述X轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动,且所述第二压电致动器适于沿着所述X轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动;
其中,所述第一压电致动器适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动,且所述第二压电致动器适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动;
其中,所述第一压电致动器适于沿着所述X轴所设定的第一方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的第一方向进行移动,且所述第二压电致动器适于沿着所述X轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的第二方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动该感光组件绕所述Z轴在所述XOY平面内进行旋转;
其中,所述第一压电致动器适于沿着所述Y轴所设定的第一方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的第一方向进行移动,且所述第二压电致动器适于沿着所述Y轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的第二方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动该感光组件绕所述Z轴在所述XOY平面内进行旋转。
在根据本申请的防抖驱动组件中,所述防抖驱动组件进一步包括设置于所述防抖可动部和所述基底之间的驱动基板,所述驱动基板包括至少一导电端和自所述导电端往外延伸的连接端,所述第一压电致动器和所述第二压电致动器电连接于所述至少一电连接端。
在根据本申请的防抖驱动组件中,所述至少一导电端包括第一导电端和第二导电端,所述第一压电致动器电连接于所述第一导电端,所述第二压电致动器电连接于所述第二导电端。
在根据本申请的防抖驱动组件中,所述防抖可动部具有形成于所述载体主体的侧壁的开槽,所述开槽被配置为允许该感光组件的线路板自所述开槽伸出所述安置槽。
在根据本申请的防抖驱动组件中,所述基底具有形成于其侧壁的开口,其中,所述连接端子所述至少一导电端往外延伸并穿过所述开口。
在根据本申请的防抖驱动组件中,所述开口和所述开槽具有高度差。
根据本申请的另一方面,还提供了一种摄像模组,其包括:
光学镜头;
感光组件,包括线路板和电连接于所述线路板的感光组件,其中,所述光学镜头被保持于所述感光组件的感光路径上;以及
如上所述的防抖驱动组件,其中,所述感光组件被安装于所述防抖驱动组件的防抖可动部。
按照本申请的第四种设计方案,提出再一种防抖驱动组件和摄像模组。
本申请的一优势在于提供了一种防抖驱动组件和摄像模组,其中,所述摄像模组采用新型的压电致动器作为驱动元件以不仅能够提供足够大的驱动力,而且,能够提供精度更高和行程更长的驱动性能,以满足所述摄像模组的光学性能调整的需求,例如,光学防抖的需求。
本申请的另一优势在于提供了一种防抖驱动组件和摄像模组,其中,采用合理的布设方案将所述压电致动器布设于所述摄像模组中,以满足摄像模组的结构和尺寸要求。
本申请的又一优势在于提供了一种防抖驱动组件和摄像模组,其中,所述防抖驱动组件仅配置一个防抖可动部来实现所述摄像模组在XOY平面内的防抖,也就是,所述防抖驱动组件具有相对简化的驱动配置。
本申请的又一优势在于提供了一种防抖驱动组件和摄像模组,其中,所述防抖驱动组件中用于安装感光组件的安装面和用于安装驱动基板的安装面具有高度差以使得所述感光组件的线路板和用于导通防抖驱动部的驱动基板延伸于所述防抖驱动组件的不同高度,通过这样的方式,避免在移动所述感光组件以进行光学防抖时所述驱动基板对所述感光组件的移动造成影响。
通过下面的描述,本申请的其它优势和特征将会变得显而易见,并可以通过权利要求书中特别指出的手段和组合得到实现。
为实现上述至少一优势,本申请提供一种防抖驱动组件,其包括:
防抖固定部,其中,所述防抖固定部具有适于安装驱动基板于其上的第一安装面;
防抖可动部,其中,所述防抖可动部具有适于安装感光组件于其上的第二安装面,所述第一安装面与所述第二安装面之间具有高度差;
安装于所述第一安装面的驱动基板;以及
电连接于所述驱动基板且位于所述防抖固定部和所述防抖可动部之间的防抖驱动部,所述防抖驱动部适于作动所述防抖可动部和该感光组件在X轴和Y轴所设定的XOY平面内移动或绕着垂直于所述X轴和所述Y轴的Z轴在所述XOY平面内旋转。
在根据本申请的防抖驱动组件中,安装于所述第一安装面的驱动基板从所述防抖驱动组件的第一高度伸出,安装于所述第二安装面的感光组件的线路板适于从所述防抖驱动组件的第二高度伸出。
在根据本申请的防抖驱动组件中,所述第一安装面和所述第二安装面之间的高度差为0.1mm-0.15mm。
在根据本申请的防抖驱动组件中,所述驱动基板从所述防抖驱动组件的第一侧伸出,且该感光组件的线路板适于从所述防抖驱动组件的所述第一侧伸出。
在根据本申请的防抖驱动组件中,所述驱动基板从所述防抖驱动组件的第一侧伸出,且该感光组件的线路板适于从所述防抖驱动组件的第二侧伸出。
在根据本申请的防抖驱动组件中,所述第一侧与所述第二侧相邻,或,所述第一侧与所述第二侧相对。
在根据本申请的防抖驱动组件中,所述防抖固定部包括基底和与所述基底相扣合的上盖,相扣合的所述上盖和所述基底形成收容腔于其间,所述防抖可动部被悬持于所述防抖固定部的收容腔内。
在根据本申请的防抖驱动组件中,所述基底的内底表面形成所述第一安装面。
在根据本申请的防抖驱动组件中,所述基底具有形成于其侧壁的开口,其中,所述驱动基板自所述开口以所述第一高度伸出所述防抖驱动组件。
在根据本申请的防抖驱动组件中,所述防抖可动部包括载体主体、自所述载体主体向外延伸的载体延伸臂和形成于所述载体延伸臂的下表面的摩擦板,其中,所述第一压电致动器和所述第二压电致动器摩擦地耦接于所述摩擦板。
在根据本申请的防抖驱动组件中,所述载体主体具有低于所述载体延伸臂的安置槽,所述安置槽的内底表面形成所述第二安装面。
在根据本申请的防抖驱动组件中,所述防抖可动部具有形成于所述载体主体的侧壁且连通于所述安置槽的开槽,所述开槽被配置为允许该感光组件的线路板自所述开槽以所述第二高度伸出所述防抖驱动组件。
在根据本申请的防抖驱动组件中,所述开口和所述开槽具有高度差,所述高度差为0.1mm-0.15mm。
在根据本申请的防抖驱动组件中,所述开口和所述开槽位于所述防抖驱动组件的所述第一侧。
在根据本申请的防抖驱动组件中,所述驱动基板包括至少一导电端和自所述导电端往外延伸的连接端,所述第一压电致动器和所述第二压电致动器电连接于所述至少一电连接端。
在根据本申请的防抖驱动组件中,所述至少一导电端包括第一导电端和第二导电端,所述第一压电致动器电连接于所述第一导电端,所述第二压电致动器电连接于所述第二导电端。
在根据本申请的防抖驱动组件中,所述连接端自所述至少一导电端往外延伸并穿过所述开口。
在根据本申请的防抖驱动组件中,所述防抖驱动部包括摩擦地耦接于所述防抖可动部的第一压电致动器和第二压电致动器,其中,所述第一压电致动器和所述第二压电致动器相互平行地布设于该感光组件的相对的两侧,且所述第一压电致动器和所述第二压电致动器适于作动所述防抖可动部和该感光组件在X轴和Y轴所设定的XOY平面内移动或绕着垂直于所述X轴和所述Y轴的Z轴在所述XOY平面内旋转。
在根据本申请的防抖驱动组件中,所述第一压电致动器和所述第二压电致动器为行波式压电致动 器,其中,所述第一压电致动器包括第一压电陶瓷板和突出于所述第一压电陶瓷板的第一摩擦驱动部,所述第一压电陶瓷板适于在被电驱动后发生形变以带动所述第一摩擦驱动部做单向偏摆往复运动;其中,所述第二压电致动器包括第二压电陶瓷板和突出于所述第二压电陶瓷板的第二摩擦驱动部,所述第二压电陶瓷板适于在被电驱动后发生形变以带动所述第二摩擦驱动部做单向偏摆往复运动。
在根据本申请的防抖驱动组件中,所述第一压电致动器适于沿着所述X轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动,且所述第二压电致动器适于沿着所述X轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动;
其中,所述第一压电致动器适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动,且所述第二压电致动器适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动;
其中,所述第一压电致动器适于沿着所述X轴所设定的第一方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的第一方向进行移动,且所述第二压电致动器适于沿着所述X轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的第二方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动该感光组件绕所述Z轴在所述XOY平面内进行旋转;
其中,所述第一压电致动器适于沿着所述Y轴所设定的第一方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的第一方向进行移动,且所述第二压电致动器适于沿着所述Y轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的第二方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动该感光组件绕所述Z轴在所述XOY平面内进行旋转.
在根据本申请的防抖驱动组件中,所述防抖可动部被平稳地支持于所述第一压电致动器的第一摩擦驱动部和所述第二压电致动器的第二摩擦驱动部上。
在根据本申请的防抖驱动组件中,所述第一压电陶瓷板被设置于所述防抖固定部,所述第一摩擦驱动部摩擦地耦接于所述防抖可动部;所述第二压电陶瓷板被设置于所述防抖固定部,所述第二摩擦驱动部摩擦地耦接于所述防抖可动部。
在根据本申请的防抖驱动组件中,所述第一压电致动器和所述第二压电致动器具有相同的高度尺寸
在根据本申请的防抖驱动组件中,所述第一压电致动器和所述第二压电致动器的高度尺寸为0.7mm-0.9mm。
在根据本申请的防抖驱动组件中,所述防抖驱动组件进一步包括设置于所述防抖驱动部和所述防抖固定部之间的预压力装置,以通过所述预压力装置所提供的预压力迫使所述第一压电致动器的的第 一摩擦驱动部和所述第二压电致动器的第二摩擦驱动部摩擦地耦接于所述防抖可动部。
在根据本申请的防抖驱动组件中,所述预压力装置包括设置于所述基底和所述第一压电致动器的第一压电陶瓷板之间的第一弹性元件,以通过所述第一弹性元件自身的弹力产生所述预压力以迫使所述第一压电致动器的第一摩擦驱动部抵触于所述防抖可动部,通过这样的方式使得所述第一压电致动器的第一摩擦驱动部摩擦地耦接于所述防抖可动部;所述预压力装置还包括设置于所述基底和所述第二压电致动器的第二压电陶瓷板之间的第二弹性元件,以通过所述第二弹性元件自身的弹力产生的所述预压力迫使所述第二压电致动器的第二摩擦驱动部抵触于所述防抖可动部,通过这样的方式使得所述第二压电致动器的第二摩擦驱动部摩擦地耦接于所述防抖可动部。
根据本申请的另一方面,还提供了一种摄像模组,其包括:
光学镜头;
感光组件,包括线路板和电连接于所述线路板的感光组件,其中,所述光学镜头被保持于所述感光组件的感光路径上;以及
如上所述的防抖驱动组件,其中,所述感光组件被安装于所述防抖驱动组件的防抖可动部的第二安装面上。
按照本申请的第五种设计方案,提出一种摄像模组的防抖方法。
本申请的一优势在于提供了一种摄像模组的防抖方法,其通过具有特殊驱动特性的第一压电致动器和第二压电致动器并配合一个防抖可动部实现所述摄像模组在多个方向上的光学防抖。
本申请的又一优势在于提供了一种摄像模组的防抖方法,其中,所述摄像模组的防抖方法能够通过具有特殊驱动特性的第一压电致动器和第二压电致动器并配合一个防抖可动部实现所述摄像模组在XOY平面内的旋转防抖。
通过下面的描述,本申请的其它优势和特征将会变得显而易见,并可以通过权利要求书中特别指出的手段和组合得到实现。
为实现上述至少一优势,本申请提供一种摄像模组的防抖方法,其包括:
同时驱动防抖驱动部的第一压电致动器和第二压电致动器以作动安装于防抖可动部的感光组件先沿第一方向移动;以及
同时驱动所述防抖驱动部的第一压电致动器和第二压电致动器以作动安装于所述防抖可动部的所述感光组件再沿第二方向移动,其中,所述第一方向与第二方向相互垂直。
在根据本申请的摄像模组的防抖方法中,所述第一压电致动器和所述第二压电致动器相互平行地布设于所述感光组件的相对的两侧。
在根据本申请的摄像模组的防抖方法中,所述第一方向为X轴方向、所述第二方向为Y轴方向。
在根据本申请的摄像模组的防抖方法中,所述第一方向为Y轴方向、所述第二方向为X轴方向。
在根据本申请的摄像模组的防抖方法中,所述第一压电致动器和所述第二压电致动器具有长方形结构,其中,所述第一压电致动器和所述第二压电致动器的长度方向为所述X轴方向,所述第一压电致动器和所述第二压电致动器的宽度方向为所述Y轴方向。
在根据本申请的摄像模组的防抖方法中,所述第一压电致动器和所述第二压电致动器以所述X轴 作为对称轴对称地布置于所述感光组件的相对的两侧。
在根据本申请的摄像模组的防抖方法中,同时驱动防抖驱动部的第一压电致动器和第二压电致动器以作动安装于防抖可动部的感光组件先沿第一方向移动,包括:驱动所述第一压电致动器沿着其长度方向形变以作动所述防抖可动部沿着所述第一方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第一方向移动;以及,驱动所述第二压电致动器沿着其长度方向形变以作动所述防抖可动部沿着所述第一方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第一方向移动。
在根据本申请的摄像模组的防抖方法中,同时驱动所述防抖驱动部的第一压电致动器和第二压电致动器以作动安装于所述防抖可动部的所述感光组件再沿第二方向移动,包括:驱动所述第一压电致动器沿着其宽度方向形变以作动所述防抖可动部沿着所述第二方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第二方向移动;以及,驱动所述第二压电致动器沿着其宽度方向形变以作动所述防抖可动部沿着所述第二方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第二方向移动。
在根据本申请的摄像模组的防抖方法中,所述第一压电致动器和所述第二压电致动器以所述Y轴作为对称轴对称地布置于所述感光组件的相对的两侧。
在根据本申请的摄像模组的防抖方法中,同时驱动防抖驱动部的第一压电致动器和第二压电致动器以作动安装于防抖可动部的感光组件先沿第一方向移动,包括:驱动所述第一压电致动器沿着其宽度方向形变以作动所述防抖可动部沿着所述第一方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第一方向移动;以及,驱动所述第二压电致动器沿着其宽度方向形变以作动所述防抖可动部沿着所述第一方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第一方向移动。
在根据本申请的摄像模组的防抖方法中,同时驱动所述防抖驱动部的第一压电致动器和第二压电致动器以作动安装于所述防抖可动部的所述感光组件再沿第二方向移动,包括:驱动所述第一压电致动器沿着其长度方向形变以作动所述防抖可动部沿着所述第二方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第二方向移动;以及,驱动所述第二压电致动器沿着其长度方向形变以作动所述防抖可动部沿着所述第二方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第二方向移动。
在根据本申请的摄像模组的防抖方法中,所述防抖可动部被悬空地支持于防抖固定部的收容腔内,所述防抖驱动部的第一压电致动器和第二压电致动器被设置于所述防抖固定部和所述防抖可动部之间。
在根据本申请的摄像模组的防抖方法中,所述防抖可动部被平稳的支持于所述第一致动器和所述第二压电致动器上。
在根据本申请的摄像模组的防抖方法中,用于导通所述第一压电致动器和所述第二压电致动器的驱动基板和所述感光组件的线路板在所述收容腔内相互错开。
根据本申请的另一方面,还提供了一种摄像模组的防抖方法,其包括:
驱动防抖驱动部的第一压电致动器以作动安装于防抖可动部的感光组件沿第一方向移动;以及
同时驱动所述防抖驱动部的第二压电致动器以作动安装于所述防抖可动部的所述感光组件沿第二 方向移动,所述第一方向与所述第二方向相互平行且相反,以通过所述第一压电致动器和所述第二压电致动器驱动所述感光组件进行旋转。
在根据本申请的摄像模组的防抖方法中,所述第一压电致动器和所述第二压电致动器相互平行地布设于所述感光组件的相对的两侧。
在根据本申请的摄像模组的防抖方法中,所述第一压电致动器和所述第二压电致动器以所述X轴作为对称轴对称地布置于所述感光组件的相对的两侧。
在根据本申请的摄像模组的防抖方法中,所述第一方向为X轴方向的正方向,所述第二方向为X轴方向的负方向。
在根据本申请的摄像模组的防抖方法中,所述第一方向为X轴方向的负方向,所述第二方向为X轴方向的正方向。
在根据本申请的摄像模组的防抖方法中,所述第一压电致动器和所述第二压电致动器以所述Y轴作为对称轴对称地布置于所述感光组件的相对的两侧。
在根据本申请的摄像模组的防抖方法中,所述第一方向为Y轴方向的正方向,所述第二方向为Y轴方向的负方向。
在根据本申请的摄像模组的防抖方法中,所述第一方向为Y轴方向的负方向,所述第二方向为Y轴方向的正方向。
在根据本申请的摄像模组的防抖方法中,驱动防抖驱动部的第一压电致动器以作动安装于防抖可动部的感光组件沿第一方向移动,包括:驱动所述第一压电致动器沿着其长度方向形变以作动所述防抖可动部沿着所述第一方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第一方向移动;其中,同时驱动所述防抖驱动部的第二压电致动器以作动安装于所述防抖可动部的所述感光组件沿第二方向移动,包括:同时驱动所述第二压电致动器沿着其长度方向形变以作动所述防抖可动部沿着所述第二方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第二方向移动。
在根据本申请的摄像模组的防抖方法中,驱动防抖驱动部的第一压电致动器以作动安装于防抖可动部的感光组件沿第一方向移动,包括:驱动所述第一压电致动器沿着其宽度方向形变以作动所述防抖可动部沿着所述第一方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第一方向移动;其中,同时驱动所述防抖驱动部的第二压电致动器以作动安装于所述防抖可动部的所述感光组件沿第二方向移动,包括:同时驱动所述第二压电致动器沿着其宽度方向形变以作动所述防抖可动部沿着所述第二方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第二方向移动。
按照本申请的第六种设计方案,提出一种用于驱动镜头的驱动组件和摄像模组。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件和一种摄像模组,其中合理构造和布置用于承载镜头的可调群组的驱动载体以及用于驱动所述驱动载体移动的驱动元件,从而为驱动组件和摄像模组的其他零部件提供足够的结构空间。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件和一种摄像模组,其中摩擦板设置在所述驱动元件与所述驱动载体的载体主体之间,从而在所述驱动元件与所述驱动载体的载体主体之间形成优化的结构空间。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件和一种摄像模组,其中摩擦板将驱动元件与所述驱动载体的载体主体之间的结构空间分成第一结构空间和相对的第二结构空间,从而为驱动组件的其他零部件提供优化的安装空间和改良的布局,使得所述驱动组件和摄像模组的结构更加紧凑。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件和一种摄像模组,其中摩擦板将驱动元件与所述驱动载体的载体主体之间的结构空间分成第一结构空间和相对的第二结构空间,在其中合理布置驱动组件的导引装置和位置感测元件,使得所述驱动组件和摄像模组的结构更加紧凑,同时能够足够大的驱动力,满足摄像模组的驱动需求。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件和一种摄像模组,其中采用驱动组件和摄像模组的模组结构设计,不仅简化了模组结构,减小了模组体积和重量,还提供了更大的镜片移动行程和推力。
为了实现上述目的,根据本申请的第一方面,提出一种用于驱动镜头的驱动组件,其特征在于,包括:
驱动载体,其具有用于承载镜头的可调群组的载体主体;
驱动元件,用于提供使所述驱动载体沿着调整方向移动的驱动力,其中在所述驱动元件与所述驱动载体的载体主体之间形成结构空间;
摩擦板,其设置在所述驱动元件与所述驱动载体的载体主体之间的所述结构空间中,并且所述摩擦板的一端与所述驱动载体的载体主体固定连接,另一端与所述驱动元件作用连接,使得所述驱动元件能够驱动所述摩擦板沿着所述调整方向移动。
根据本申请的第一方面的一些实施方式,所述设置在驱动元件与所述驱动载体的载体主体之间的结构空间中的摩擦板将所述结构空间分成第一结构空间和与第一结构空间相对的第二结构空间。
根据本申请的第一方面的一些实施方式,在所述第一结构空间中布置用于感测驱动载体或者摩擦板的移动位置的位置感测元件,在所述与第一结构空间相对的第二结构空间中布置用于引导驱动载体沿着所述调整方向移动的导引装置。
根据本申请的第一方面的一些实施方式,所述驱动载体还包括从驱动载体的载体主体向外伸出的连接端,所述连接端具有连接孔,所述导引装置包括导杆,所述导杆平行于所述调整方向穿过驱动载体的连接端的连接孔,从而驱动载体能在驱动元件的驱动下沿着导引装置移动。
根据本申请的第一方面的一些实施方式,所述驱动载体的连接端包括从驱动载体的载体主体向外延伸的第一连接端和从驱动载体的载体主体向外延伸的第二连接端,其中第一连接端和第二连接端分别位于所述载体主体的彼此相对的两侧,并且
所述导引装置包括第一导杆和第二导杆,其中第一导杆穿过驱动载体的第一连接端的第一连接孔,第二导杆穿过驱动载体的第二连接端的第二连接孔,从而驱动载体能在驱动元件的驱动下沿着导引装置的第一导杆和第二导杆移动,其中第一导杆和第二导杆彼此平行并沿着所述调整方向布置。
根据本申请的第一方面的一些实施方式,所述驱动载体的第二连接端还具有安置槽,所述摩擦板嵌入到所述安置槽中并与驱动载体的载体主体固定连接,其中所述安置槽构造成夹持轨道,所述摩擦 板被夹持在所述夹持轨道之间。
根据本申请的第一方面的一些实施方式,所述驱动元件构造成压电致动器,包括压电板和固定在压电板上的摩擦驱动部,其中摩擦驱动部与所述摩擦板作用连接,从而能够驱动所述摩擦板沿着所述调整方向移动。
根据本申请的第一方面的一些实施方式,设有给所述驱动元件提供预压力的预压力装置,使得驱动元件在所述预压力的作用下与所述摩擦板保持摩擦接触。
根据本申请的第一方面的一些实施方式,在所述预压力装置与摩擦板之间设置摩擦机构,使得摩擦板与所述预压力装置通过所述摩擦机构活动连接,其中所述预压力装置将摩擦机构顶压在摩擦板上。
根据本申请的第一方面的一些实施方式,在摩擦板的一个侧面上设置所述驱动元件,在摩擦板的相对的另一个侧面上设置所述摩擦机构,使得摩擦板在所述预压力装置的作用下被夹持在所述驱动元件和所述摩擦机构之间,使得摩擦板能在所述驱动元件的驱动作用下沿着所述调整方向移动。
根据本申请的第一方面的一些实施方式,所述预压力装置包括上夹部、下夹部以及连接所述上夹部和下夹部的连接部,其中所述预压力装置将摩擦板以及布置在摩擦板两侧的驱动元件和摩擦机构弹性夹持在所述预压力装置的上夹部和下夹部之间。
根据本申请的第一方面的一些实施方式,在摩擦板的两个相对侧面上分别设置一个驱动元件,使得摩擦板被夹持在这两个驱动元件之间,并能在这两个驱动元件的协同驱动作用下沿着所述调整方向移动。
根据本申请的第一方面的一些实施方式,所述预压力装置包括上夹部、下夹部以及连接所述上夹部和下夹部的连接部,其中所述预压力装置将摩擦板以及布置在摩擦板两侧的驱动元件弹性夹持在所述预压力装置的上夹部和下夹部之间。
根据本申请的第一方面的一些实施方式,所述驱动组件还包括与驱动元件电连接的驱动基板,用于给驱动元件输送电流,其中所述驱动基板通过所述预压力装置夹持在所述驱动元件上。
根据本申请的第一方面的一些实施方式,所述驱动基板包括第一导电端、第二导电端以及连接所述第一导电端和第二导电端的连接带,其中所述第一导电端通过所述预压力装置的上夹部夹持在对应的驱动元件上,所述第二导电端通过所述预压力装置的下夹部夹持在对应的驱动元件上。
根据本申请的第一方面的一些实施方式,所述驱动基板的第二导电端设置有延伸部,所述延伸部延伸到所述第一结构空间中,其中所述位置感测元件设置在所述延伸部上,并且与位置感测元件的位置相对地在摩擦板上设有感测磁铁。
根据本申请的第一方面的一些实施方式,所述驱动组件还包括承载机构,所述承载机构具有形成安置空间的多个定位柱,所述驱动元件在所述预压力装置的夹持下设置在所述安置空间中,其中驱动基板固定在承载机构的定位柱上。
根据本申请的第一方面的一些实施方式,所述承载机构还具有承载连接部,所述承载连接部与驱动壳体固定连接,其中所述驱动壳体包括上壳体和与所述上壳体连接成封闭结构的下壳体。
根据本申请的第一方面的一些实施方式,所述摩擦机构包括构造在所述预压力装置和/或摩擦板上 的凹槽或者辊道以及布置在所述凹槽或者辊道中的滚珠或滑块。
根据本申请的第二方面,提出一种摄像模组,包括
如前所述的用于驱动镜头的驱动组件;
感光组件,用于接受光信号并将接收的光信号转变为图像信号;
镜头组,包括固定群组和可调群组,其中所述驱动组件的驱动元件设置用于驱动所述镜头组的可调群组。
根据本申请的第二方面的一些实施方式,所述镜头组的可调群组包括变焦群组和对焦群组,其中所述驱动组件的驱动载体包括用于承载变焦群组的第一载体和用于承载对焦群组的第二载体,其中第一载体和第二载体沿调整方向同轴地依次布置,并能够被单独驱动。
按照本申请的第七种设计方案,提出另一种用于驱动镜头的驱动组件和摄像模组。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件和一种摄像模组,其中合理构造和布置用于承载镜头的可调群组的驱动载体以及用于驱动所述驱动载体移动的驱动元件,从而为驱动组件和摄像模组的其他零部件提供足够的结构空间。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件和一种摄像模组,其中包括第一载体和第二载体,其分别用于承载镜头的至少一个可调群组,从而能够彼此独立地控制和驱动所述至少一个可调群组沿调整方向移动。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件和一种摄像模组,其中合理构造和布置驱动元件相对对应摩擦板的初始位置,从而使得摩擦板在移动过程中始终保持在对应驱动元件的驱动范围内,并提供稳定、可靠和足够大的驱动力。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件和一种摄像模组,其中合理构造和布置第一载体和第二载体的摩擦板和驱动元件等零部件,从而在驱动过程中避免第一载体和第二载体相互之间产生干涉,确保可靠和足够的驱动力,同时使得所述驱动组件和摄像模组的结构更加紧凑。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件和一种摄像模组,其中采用驱动组件和摄像模组的模组结构设计,不仅简化了模组结构,减小了模组体积和重量,还提供了更大的镜片移动行程和推力。
为了实现上述目的,根据本申请的第一方面,提出一种用于驱动镜头的驱动组件,包括:
驱动载体,包括第一载体和第二载体,其分别用于承载镜头的至少一个可调群组,其中第一载体和第二载体依次布置在沿调整方向的同一轴线上,并能够彼此独立地沿所述调整方向移动;
第一驱动元件;
第一摩擦板,其设置在第一载体的载体主体与第一驱动元件之间,其中第一摩擦板的一端与第一载体的载体主体固定连接,另一端与第一驱动元件作用连接;
第二驱动元件;
第二摩擦板,其设置在第二载体的载体主体与第二驱动元件之间,其中第二摩擦板的一端与第二载体的载体主体固定连接,另一端与第二驱动元件作用连接;
其中第一驱动元件和与第一驱动元件作用连接的第一摩擦板位于所述驱动组件的第一侧,第二驱 动元件和与第二驱动元件作用连接的第二摩擦板位于所述驱动组件的第二侧,所述第一侧和第二侧相对于第一载体和第二载体的所述轴线彼此相对,
其中所述与第一载体的载体主体固定连接的第一摩擦板沿所述调整方向朝着远离第二载体的方向延伸,所述与第二载体的载体主体固定连接的第二摩擦板沿所述调整方向朝着远离第一载体的方向延伸。
根据本申请的第一方面的一些实施方式,所述第一驱动元件设置在所述驱动组件沿所述调整方向的中间位置,并且第二驱动元件设置在所述驱动组件沿所述调整方向的中间位置。
根据本申请的第一方面的一些实施方式,所述第一驱动元件和第二驱动元件沿所述调整方向彼此平行设置。
根据本申请的第一方面的一些实施方式,所述第一驱动元件和第二驱动元件构造成压电致动器,分别包括压电板和固定在压电板上的摩擦驱动部,其中第一驱动元件的摩擦驱动部与第一摩擦板作用连接,从而能够驱动第一摩擦板沿着调整方向移动,第二驱动元件的摩擦驱动部与第二摩擦板作用连接,从而能够驱动第二摩擦板沿着调整方向移动。
根据本申请的第一方面的一些实施方式,第一摩擦板在移动过程中始终保持在第一驱动元件的驱动范围内,并且第二摩擦板在移动过程中始终保持在第二驱动元件的驱动范围内。
根据本申请的第一方面的一些实施方式,在初始位置中,所述第一驱动元件的摩擦驱动部在第一摩擦板的沿所述调整方向的中间位置与第一摩擦板作用连接,和/或第二驱动元件的摩擦驱动部在第二摩擦板的沿所述调整方向的中间位置与第二摩擦板作用连接。
根据本申请的第一方面的一些实施方式,在初始位置中,所述第一驱动元件的摩擦驱动部在第一摩擦板的沿所述调整方向的一个端部上与第一摩擦板作用连接,和/或第二驱动元件的摩擦驱动部在第二摩擦板的沿所述调整方向的一个端部上与第二摩擦板作用连接。
根据本申请的第一方面的一些实施方式,所述驱动组件还包括导引装置,用于引导第一载体和第二载体沿着所述调整方向移动,其中所述导引装置包括至少一个导杆,所述导杆平行于所述调整方向穿过第一载体和第二载体,从而使第一载体和第二载体能沿着导引装置移动。
根据本申请的第一方面的一些实施方式,所述第一载体包括从第一载体的载体主体向外延伸的第一连接端和从第一载体的载体主体向外延伸的第二连接端,其中第一连接端和第二连接端分别位于第一载体的载体主体的彼此相对的两侧,其中第一载体的第一连接端具有第一连接孔,第一载体的第二连接端具有第二连接孔,并且
第二载体还包括从第二载体的载体主体向外延伸的第一连接端和从第二载体的载体主体向外延伸的第二连接端,其中第一连接端和第二连接端分别位于第二载体的载体主体的彼此相对的两侧,其中第二载体的第一连接端具有第一连接孔,第二载体的第二连接端具有第二连接孔,
其中所述导引装置包括第一导杆和第二导杆,其中第一导杆穿过第一载体的第二连接端的第二连接孔和第二载体的第一连接端的第一连接孔,第二导杆穿过第一载体的第一连接端的第一连接孔和第二载体的第二连接端的第二连接孔,从而第一载体和第二载体能分别在第一驱动元件和第二驱动元件的驱动下沿着导引装置的第一导杆和第二导杆单独移动,其中第一导杆和第二导杆彼此平行地沿着所 述调整方向布置。
根据本申请的第一方面的一些实施方式,所述导引装置的第一导杆和第二导杆具有高度差。
根据本申请的第一方面的一些实施方式,所述第一载体的第二连接端具有安置槽,第一摩擦板嵌入到第二连接端的所述安置槽中并与第一载体的载体主体固定连接,并且第二载体的第二连接端具有安置槽,第二摩擦板嵌入到第二连接端的所述安置槽中并与第二载体的载体主体固定连接。
根据本申请的第一方面的一些实施方式,所述驱动组件还包括第一预压力装置,其设置成给第一驱动元件提供预压力,使得第一驱动元件在所述预压力的作用下与第一摩擦板保持摩擦接触,并且
所述驱动组件还包括第二预压力装置,其设置成给第二驱动元件提供预压力,使得第二驱动元件在所述预压力的作用下与第二摩擦板保持摩擦接触。
根据本申请的第一方面的一些实施方式,在第一预压力装置与第一摩擦板之间设置第一摩擦机构,使得第一摩擦板与第一预压力装置通过第一摩擦机构活动连接,并且
在第二预压力装置与第二摩擦板之间设置第二摩擦机构,使得第二摩擦板与第二预压力装置通过第二摩擦机构活动连接。
根据本申请的第一方面的一些实施方式,在第一摩擦板的一个侧面上设置第一驱动元件,在第一摩擦板的相对的另一个侧面上设置第一摩擦机构,使得第一摩擦板被夹持在第一驱动元件和第一摩擦机构之间,并且第一摩擦板能在第一驱动元件的驱动作用下沿着所述调整方向移动,并且,
在第二摩擦板的一个侧面上设置第二驱动元件,在第二摩擦板的相对的另一个侧面上设置第二摩擦机构,使得第二摩擦板被夹持在第二驱动元件和第二摩擦机构之间,并且第二摩擦板能在第二驱动元件的驱动作用下沿着所述调整方向移动。
根据本申请的第一方面的一些实施方式,所述第一预压力装置和第二预压力装置分别包括上夹部、下夹部以及连接所述上夹部和下夹部的连接部,
其中第一预压力装置将第一摩擦板以及布置在第一摩擦板两侧的第一驱动元件和第一摩擦机构弹性夹持在第一预压力装置的上夹部和下夹部之间,并且
第二预压力装置将第二摩擦板以及布置在第二摩擦板两侧的第二驱动元件和第二摩擦机构弹性夹持在第二预压力装置的上夹部和下夹部之间。
根据本申请的第一方面的一些实施方式,在第一摩擦板的两个相对侧面上分别设置一个第一驱动元件,使得第一摩擦板被夹持在这两个第一驱动元件之间,并能在这两个第一驱动元件的协同驱动作用下沿着所述调整方向移动,并且
在第二摩擦板的两个相对侧面上分别设置一个第二驱动元件,使得第二摩擦板被夹持在这两个第二驱动元件之间,并能在这两个第二驱动元件的协同驱动作用下沿着所述调整方向移动。
根据本申请的第一方面的一些实施方式,所述第一预压力装置和第二预压力装置分别包括上夹部、下夹部以及连接所述上夹部和下夹部的连接部,
其中第一预压力装置将第一摩擦板以及布置在第一摩擦板两侧的第一驱动元件弹性夹持在第一预压力装置的上夹部和下夹部之间,并且
第二预压力装置将第二摩擦板以及布置在第二摩擦板两侧的第二驱动元件弹性夹持在第二预压力 装置的上夹部和下夹部之间。
根据本申请的第一方面的一些实施方式,在第一预压力装置与第一驱动元件之间设置第一驱动基板,第一驱动基板与第一驱动元件电连接,用于给第一驱动元件输送电流,其中第一驱动基板通过第一预压力装置夹持在第一驱动元件上,并且
在第二预压力装置与第二驱动元件之间设置第二驱动基板,第二驱动基板与第二驱动元件电连接,用于给第二驱动元件输送电流,其中第二驱动基板通过第二预压力装置夹持在第二驱动元件上。
根据本申请的第一方面的一些实施方式,所述第一驱动基板包括第一导电端、第二导电端以及连接所述第一导电端和第二导电端的连接带,其中第一驱动基板的第一导电端通过第一预压力装置的上夹部夹持在对应的驱动元件上,所述第一驱动基板的第二导电端通过第一预压力装置的下夹部夹持在对应的驱动元件上,并且
第二驱动基板包括第三导电端、第四导电端以及连接所述第三导电端和第四导电端的连接带,其中第二驱动基板的第三导电端通过第二预压力装置的下夹部夹持在对应的驱动元件上,所述第二驱动基板的第四导电端通过第二预压力装置的上夹部夹持在对应的驱动元件上。
根据本申请的第一方面的一些实施方式,所述驱动组件还包括第一承载机构和第二承载机构,第一承载机构和第二承载机构分别具有形成安置空间的多个定位柱,其中第一驱动元件在第一预压力装置的夹持下设置在第一承载机构的安置空间中,并且第一驱动基板的第一导电端和第二导电端分别在第一承载机构的安置空间外部固定在第一承载机构的定位柱上,并且
第二驱动元件在第二预压力装置的夹持下设置在第二承载机构的安置空间中,并且第二驱动基板的第三导电端和第四导电端分别在第二承载机构的安置空间外部固定在第二承载机构的定位柱上。
根据本申请的第一方面的一些实施方式,所述第一承载机构和第二承载机构还分别具有承载连接部,所述承载连接部与驱动壳体固定连接,其中所述驱动壳体包括上壳体和与所述上壳体连接成封闭结构的下壳体。
根据本申请的第一方面的一些实施方式,所述第一摩擦机构包括构造在第一预压力装置和/或第一摩擦板上的凹槽或者辊道以及布置在所述凹槽或者辊道中的滚珠或滑块,并且
所述第二摩擦机构包括构造在第二预压力装置和/或第二摩擦板上的凹槽或者辊道以及布置在所述凹槽或者辊道中的滚珠或滑块。
根据本申请的第二方面,提出一种摄像模组,包括
如前所述的用于驱动镜头的驱动组件;
感光组件,用于接受光信号并将接收的光信号转变为图像信号;
镜头组,包括固定群组和可调群组,其中所述驱动组件的驱动元件设置用于驱动所述镜头组的可调群组。
根据本申请的第二方面的一些实施方式,所述镜头组的可调群组包括变焦群组和对焦群组,其中所述驱动组件的第一载体用于承载变焦群组的第一载体,所述驱动组件的第二载体用于承载对焦群组,其中第一载体和第二载体能够分别被第一驱动元件和第二驱动元件单独驱动。
按照本申请的第八种设计方案,提出又一种用于驱动镜头的驱动组件及其组装方法和摄像模组。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件及其组装方法和摄像模组,其中承载机构具有安置空间,驱动元件可以容纳在承载机构的安置空间中,从而为驱动组件和摄像模组的其他零部件提供简单且可靠的支撑措施和优化的结构空间,并简化驱动组件的组装过程。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件及其组装方法和摄像模组,其中承载机构具有承载连接部,其设置用于与驱动组件的驱动壳体固定连接,从而为驱动元件的其他零部件提供简单且可靠的固定措施,并简化驱动组件的组装过程。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件及其组装方法和摄像模组,其中承载机构具有定位柱,其能够为驱动基板提供具有良好平整度的安装平面,并能够限定所述驱动基板的基板长度和连接宽度,从而优化整个驱动组件的组成和结构,并简化驱动组件的组装过程。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件及其组装方法和摄像模组,其中基于承载机构合理构造和布置驱动组件的其他零部件,使得所述驱动组件和摄像模组的结构更加紧凑,同时确保能够提供足够的驱动力。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件及其组装方法和摄像模组,其中采用驱动组件和摄像模组的模组结构设计,不仅简化了模组结构,减小了模组体积和重量,还提供了更大的镜片移动行程和推力。
为了实现上述目的,根据本申请的第一方面,提出一种用于驱动镜头的驱动组件,其特征在于,包括:
驱动载体,其具有用于承载镜头的可调群组的载体主体;
驱动元件,用于提供使所述驱动载体沿着调整方向移动的驱动力;
承载机构,其具有安置空间,所述驱动元件容纳在所述承载机构的安置空间中;和
驱动基板,其固定在所述承载机构上,并与容纳在所述承载机构的安置空间中的驱动元件电连接,用于给驱动元件输送电流。
根据本申请的第一方面的一些实施方式,所述承载机构包括朝向驱动载体的载体主体延伸的多个定位柱,所述多个定位柱形成U形开口的安置空间。
根据本申请的第一方面的一些实施方式,所述驱动基板包括第一导电端、第二导电端以及连接所述第一导电端和第二导电端的连接带,其中驱动基板的第一导电端和第二导电端固定在承载机构的定位柱上。
根据本申请的第一方面的一些实施方式,所述承载机构还具有承载连接部,其设置用于与所述驱动组件的驱动壳体固定连接。
根据本申请的第一方面的一些实施方式,所述驱动壳体包括上壳体和与所述上壳体连接成封闭结构的下壳体,所述下壳体的侧壁上设有连接槽,所述承载机构的承载连接部嵌入所述连接槽内以进行固定。
根据本申请的第一方面的一些实施方式,所述承载机构的承载连接部构造为T形的插入件,其嵌入所述下壳体的连接槽内以进行固定。
根据本申请的第一方面的一些实施方式,所述驱动壳体的下壳体的侧壁上还设有重叠槽,所述重 叠槽包括内重叠槽和外重叠槽,所述内重叠槽的高度大于所述外重叠槽的高度。
根据本申请的第一方面的一些实施方式,所述驱动组件还包括摩擦板,其设置在所述驱动载体的载体主体与驱动元件之间,其中所述摩擦板的一端与所述驱动载体的载体主体固定连接,另一端与所述驱动元件作用连接,使得所述驱动元件能够驱动所述摩擦板移动。
根据本申请的第一方面的一些实施方式,设有给所述驱动元件提供预压力的预压力装置,使得驱动元件在所述预压力的作用下与所述摩擦板保持摩擦接触。
根据本申请的第一方面的一些实施方式,所述承载机构布置所述预压力装置与所述驱动壳体之间,并支撑所述预压力装置、所述驱动元件和驱动载体。
根据本申请的第一方面的一些实施方式,所述承载机构将所述预压力装置和驱动元件固定于所述驱动壳体。
根据本申请的第一方面的一些实施方式,在所述预压力装置与摩擦板之间设置摩擦机构,使得摩擦板与所述预压力装置通过所述摩擦机构活动连接,其中所述预压力装置将摩擦机构顶压在摩擦板上。
根据本申请的第一方面的一些实施方式,在所述摩擦板的一个侧面上设置所述驱动元件,在摩擦板的相对的另一个侧面上设置所述摩擦机构,使得摩擦板在所述预压力装置的作用下被夹持在所述驱动元件和所述摩擦机构之间,使得摩擦板能在所述驱动元件的驱动作用下沿着所述调整方向移动。
根据本申请的第一方面的一些实施方式,所述预压力装置包括上夹部、下夹部以及连接所述上夹部和下夹部的连接部,其中所述预压力装置将摩擦板以及布置在摩擦板两侧的驱动元件和摩擦机构弹性夹持在所述预压力装置的上夹部和下夹部之间。
根据本申请的第一方面的一些实施方式,在所述摩擦板的两个相对侧面上分别设置一个驱动元件,使得摩擦板被夹持在这两个驱动元件之间,并能在这两个驱动元件的协同驱动作用下沿着所述调整方向移动。
根据本申请的第一方面的一些实施方式,所述预压力装置包括上夹部、下夹部以及连接所述上夹部和下夹部的连接部,其中所述预压力装置将摩擦板以及布置在摩擦板两侧的驱动元件弹性夹持在所述预压力装置的上夹部和下夹部之间。
根据本申请的第一方面的一些实施方式,所述驱动基板设置在所述预压力装置与所述驱动元件之间,其中所述驱动基板通过所述预压力装置夹持在所述驱动元件上。
根据本申请的第一方面的一些实施方式,所述驱动基板的第一导电端通过所述预压力装置的上夹部夹持在对应的驱动元件上,所述驱动基板的第二导电端通过所述预压力装置的下夹部夹持在对应的驱动元件上。
根据本申请的第一方面的一些实施方式,所述驱动基板的第二导电端设置有延伸部,其中在所述延伸部上设置位置感测元件,并且与位置感测元件的位置相对地在摩擦板上设有感测磁铁。
根据本申请的第一方面的一些实施方式,所述驱动元件构造成压电致动器,包括压电板和固定在压电板上的摩擦驱动部,其中摩擦驱动部与所述摩擦板作用连接,从而能够驱动所述摩擦板沿着所述调整方向移动。
根据本申请的第一方面的一些实施方式,所述驱动组件还包括导引装置,其设置成与所述驱动载体滑动连接,从而驱动载体能在驱动元件的驱动下沿着导引装置移动。
根据本申请的第一方面的一些实施方式,所述导引装置包括导杆,所述导杆平行于所述调整方向穿过驱动载体的连接端的连接孔,从而驱动载体能在驱动元件的驱动下沿着导引装置移动。
根据本申请的第一方面的一些实施方式,所述驱动载体的连接端包括从驱动载体的载体主体向外延伸的第一连接端和从驱动载体的载体主体向外延伸的第二连接端,其中第一连接端和第二连接端分别位于所述载体主体的彼此相对的两侧,并且
所述导引装置包括第一导杆和第二导杆,其中第一导杆穿过驱动载体的第一连接端的第一连接孔,第二导杆穿过驱动载体的第二连接端的第二连接孔,从而驱动载体能在驱动元件的驱动下沿着导引装置的第一导杆和第二导杆移动,其中第一导杆和第二导杆彼此平行并沿着所述调整方向布置。
根据本申请的第二方面,提出一种摄像模组,包括
如前所述的用于驱动镜头的驱动组件;
感光组件,用于接受光信号并将接收的光信号转变为图像信号;
镜头组,包括固定群组和可调群组,其中所述驱动组件的驱动元件设置用于驱动所述镜头组的可调群组。
根据本申请的第二方面的一些实施方式,所述镜头组的可调群组包括变焦群组和对焦群组,其中所述驱动组件的驱动载体包括用于承载变焦群组的第一载体和用于承载对焦群组的第二载体,其中第一载体和第二载体沿调整方向同轴地依次布置,并能够被单独驱动。
根据本申请的第三方面,提出一种用于驱动镜头的驱动组件的组装方法,包括以下步骤:
S1.将预压力装置嵌入于承载机构,以将所述预压力装置与所述承载机构固定连接;
S2.将两个驱动元件电连接于驱动基板;
S3.将所述驱动基板安放到所述预压力装置的上夹部与下夹部之间;
S4.将摩擦板放入所述两个驱动元件之间,使所述摩擦板与驱动载体固定连接,并通过所述预压力装置夹持所述两个驱动元件,使其分别与所述摩擦板保持摩擦接触;
S5.将所述承载机构与驱动壳体固定连接。
根据本申请的第三方面的一些实施方式,在步骤S2中,将所述两个驱动元件的压电板分别电连接于所述驱动基板的第一导电端和第二导电端,并使得所述两个驱动元件的摩擦驱动部相对设置。
根据本申请的第三方面的一些实施方式,在步骤S3中,使所述预压力装置的上夹部和下夹部分别夹持所述驱动基板的第一导电端和第二导电端,通过所述预压力装置的上夹部与下夹部将所述驱动基板和所述驱动元件夹持于所述预压力装置中,并且进一步将所述驱动元件设置在所述承载机构上。
根据本申请的第三方面的一些实施方式,在步骤S4中,将所述驱动基板的第一导电端和第二导电端分别固定在所述承载机构的定位柱上。
根据本申请的第三方面的一些实施方式,在步骤S5中,将所述承载结构的承载连接部安置于所述驱动壳体的下壳体的连接槽内,以进行固定,然后将所述驱动壳体的上壳体固定到所述下壳体上,以完成所述驱动组件的组装。
按照本申请的第九种设计方案,提出再一种用于驱动镜头的驱动组件和摄像模组。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件和一种摄像模组,其中合理构造和布置用于给驱动载体提供驱动力的驱动元件和摩擦板,从而确保驱动组件和摄像模组具有足够小的尺寸。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件和一种摄像模组,其中上驱动元件和下驱动元件以及夹持在上驱动元件和下驱动元件之间的摩擦板的整体高度不大于镜头组的最大高度,从而在高度方向确保摄像模组具有足够小的尺寸。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件和一种摄像模组,其中合理构造和布置上驱动元件和下驱动元件和摩擦板等零部件,从而使得上驱动元件和下驱动元件能够协同驱动用于承载镜头的可调群组的驱动载体,并提供稳定、可靠和足够大的驱动力。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件和一种摄像模组,其中合理构造和布置第一载体和第二载体的摩擦板和驱动元件等零部件,从而使得镜头组的变焦群组和对焦群组在驱动过程中避免相互之间产生干涉,同时确保驱动组件和摄像模组的结构更加紧凑。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件和一种摄像模组,其中采用驱动组件和摄像模组的模组结构设计,不仅简化了模组结构,减小了模组体积和重量,还提供了更大的镜片移动行程和推力。
为了实现上述目的,根据本申请的第一方面,提出一种用于驱动镜头的驱动组件,包括:
驱动载体,其具有用于承载镜头的可调群组的载体主体;
驱动元件,用于提供使所述驱动载体沿着调整方向移动的驱动力;
摩擦板,其设置在所述驱动元件与所述驱动载体的载体主体之间,并且所述摩擦板的一端与所述驱动载体的载体主体固定连接,另一端与所述驱动元件作用连接,使得所述驱动元件能够驱动所述摩擦板沿着所述调整方向移动;
其中所述驱动元件包括上驱动元件和下驱动元件,其设置在摩擦板的两侧并将摩擦板夹持在中间,使得摩擦板能在所述上驱动元件和下驱动元件的协同驱动作用下沿着所述调整方向移动,
其中所述上驱动元件、下驱动元件以及夹持在上驱动元件和下驱动元件之间的摩擦板的整体高度不大于驱动载体的载体主体的最大高度。
根据本申请的第一方面的一些实施方式,设有给所述上驱动元件和下驱动元件提供预压力的预压力装置,使得上驱动元件和下驱动元件在所述预压力的作用下与所述摩擦板保持摩擦接触。
根据本申请的第一方面的一些实施方式,所述预压力装置包括上夹部、下夹部以及连接所述上夹部和下夹部的连接部,其中所述预压力装置将摩擦板以及布置在摩擦板两侧的上驱动元件和下驱动元件弹性夹持在所述预压力装置的上夹部和下夹部之间。
根据本申请的第一方面的一些实施方式,所述驱动组件还包括与上驱动元件和下驱动元件电连接的驱动基板,用于给上驱动元件和下驱动元件输送电流,其中所述驱动基板通过所述预压力装置夹持在所述上驱动元件和下驱动元件上。
根据本申请的第一方面的一些实施方式,所述驱动基板包括第一导电端、第二导电端以及连接所 述第一导电端和第二导电端的连接带,其中所述第一导电端通过所述预压力装置的上夹部夹持在上驱动元件上,所述第二导电端通过所述预压力装置的下夹部夹持在下驱动元件上。
根据本申请的第一方面的一些实施方式,所述驱动基板的第二导电端设置有延伸部,其中在所述延伸部上设置位置感测元件,并且与位置感测元件的位置相对地在摩擦板上设有感测磁铁。
根据本申请的第一方面的一些实施方式,所述上驱动元件和下驱动元件构造成压电致动器,分别包括压电板和固定在压电板上的摩擦驱动部,其中上驱动元件和下驱动元件的摩擦驱动部分别在两侧与所述摩擦板作用连接,从而能够协同驱动所述摩擦板沿着所述调整方向移动。
根据本申请的第一方面的一些实施方式,所述驱动组件还包括承载机构,所述承载机构具有形成安置空间的多个定位柱,所述上驱动元件和下驱动元件在所述预压力装置的夹持下设置在所述安置空间中,其中驱动基板固定在承载机构的定位柱上。
根据本申请的第一方面的一些实施方式,承载机构还具有承载连接部,所述承载连接部与驱动壳体固定连接,其中所述驱动壳体包括上壳体和与所述上壳体连接成封闭结构的下壳体。
根据本申请的第一方面的一些实施方式,所述驱动壳体的下壳体的侧壁上设有连接槽,所述承载机构的承载连接部嵌入所述连接槽内以进行固定。
根据本申请的第一方面的一些实施方式,所述驱动壳体的下壳体的侧壁上还设有重叠槽,所述重叠槽包括内重叠槽和外重叠槽,所述内重叠槽的高度大于所述外重叠槽的高度。
根据本申请的第一方面的一些实施方式,所述驱动组件还包括导引装置,其设置成与所述驱动载体滑动连接,从而驱动载体能在上驱动元件和下驱动元件的协同驱动下沿着导引装置移动。
根据本申请的第一方面的一些实施方式,所述导引装置包括导杆,所述导杆平行于所述调整方向穿过驱动载体的连接端的连接孔,从而驱动载体能在上驱动元件和下驱动元件的协同驱动下沿着导引装置移动。
根据本申请的第一方面的一些实施方式,所述驱动载体的连接端包括从驱动载体的载体主体向外延伸的第一连接端和从驱动载体的载体主体向外延伸的第二连接端,其中第一连接端和第二连接端分别位于所述载体主体的彼此相对的两侧,并且
所述导引装置包括第一导杆和第二导杆,其中第一导杆穿过驱动载体的第一连接端的第一连接孔,第二导杆穿过驱动载体的第二连接端的第二连接孔,从而驱动载体能在上驱动元件和下驱动元件的协同驱动下沿着导引装置的第一导杆和第二导杆移动,其中第一导杆和第二导杆彼此平行并沿着所述调整方向布置。
根据本申请的第一方面的一些实施方式,所述导引装置的第一导杆和第二导杆具有高度差。
根据本申请的第二方面,提出一种摄像模组,包括
如权利要求1到15中任一项所述的用于驱动镜头的驱动组件;
感光组件,用于接受光信号并将接收的光信号转变为图像信号;
镜头组,包括固定群组和可调群组,其中所述驱动组件的在上驱动元件和下驱动元件的协同驱动下设置用于协同驱动所述镜头组的可调群组。
根据本申请的第二方面的一些实施方式,所述镜头组的可调群组包括变焦群组和对焦群组,其中 所述驱动组件的驱动载体包括用于承载变焦群组的第一载体和用于承载对焦群组的第二载体,其中第一载体和第二载体沿调整方向同轴地依次布置,并能够被单独驱动。
根据本申请的第二方面的一些实施方式,所述驱动组件还包括:
第一驱动元件,用于提供使第一载体沿所述调整方向移动的驱动力;
第一摩擦板,其设置在第一载体的载体主体与第一驱动元件之间,其中第一摩擦板的一端与第一载体的载体主体固定连接,另一端与第一驱动元件作用连接,使得第一驱动元件能够驱动第一摩擦板沿所述调整方向移动,
其中第一驱动元件包括第一上驱动元件和第一下驱动元件,其设置在第一摩擦板的两侧并将第一摩擦板夹持在中间,使得第一摩擦板能在第一上驱动元件和第一下驱动元件的协同驱动作用下沿着所述调整方向移动;
第二驱动元件,用于提供使第二载体沿所述调整方向移动的驱动力;
第二摩擦板,其设置在第二载体的载体主体与第二驱动元件之间,其中第二摩擦板的一端与第二载体的载体主体固定连接,另一端与第二驱动元件作用连接,使得第二驱动元件能够驱动第二摩擦板沿所述调整方向移动,
其中第二驱动元件包括第二上驱动元件和第二下驱动元件,其设置在第二摩擦板的两侧并将第二摩擦板夹持在中间,使得第二摩擦板能在第二上驱动元件和第二下驱动元件的协同驱动作用下沿着所述调整方向移动。
根据本申请的第二方面的一些实施方式,所述设置在第一摩擦板的两侧并将第一摩擦板夹持在中间的第一上驱动元件和第一下驱动元件位于所述驱动组件的第一侧,所述设置在第二摩擦板的两侧并将第二摩擦板夹持在中间的第二上驱动元件和第二下驱动元件位于所述驱动组件的第二侧,其中所述第一侧和第二侧相对于第一载体和第二载体的所述轴线彼此相对。
根据本申请的第二方面的一些实施方式,所述第一上驱动元件和第一下驱动元件以及夹持在第一上驱动元件和第一下驱动元件之间的第一摩擦板的整体高度不大于镜头组的最大高度,并且所述第二上驱动元件和第二下驱动元件以及夹持在第二上驱动元件和第二下驱动元件之间的第二摩擦板的整体高度不大于镜头组的最大高度。
按照本申请的第十种设计方案,还提出一种用于驱动镜头的驱动组件和摄像模组。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件和一种摄像模组,其中驱动组件的相关零部件沿轴线观察采用中心对称布置,从而确保驱动组件和摄像模组的设计简单,结构标准化且更加紧凑,并能提供稳定、可靠和足够大的驱动力。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件和一种摄像模组,其中合理构造和布置用于给驱动载体提供驱动力的驱动元件,使得第一驱动元件与第二驱动元件沿轴线观察是中心对称的,从而第一驱动元件与第二驱动元件可以构造成具有相同结构的标准件,由此降低制造成本,简化装配工艺。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件和一种摄像模组,其中合理构造和布置摩擦机构,使得第一摩擦机构和第二摩擦机构沿轴线观察是中心对称的,从而第一摩擦机构和第二 摩擦机构可以构造成具有相同结构的标准件,由此降低制造成本,简化装配工艺。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件和一种摄像模组,其中合理构造和布置摩擦板、驱动元件以及可选的摩擦机构,使得由其形成的结构单元可以构造成具有相同结构的标准件,使得驱动组件和摄像模组的结构设计更加简单,并降低制造成本和简化装配工艺。
本发明的一个目的在于,提供一种用于驱动镜头的驱动组件和一种摄像模组,其中采用驱动组件和摄像模组的模组结构设计,不仅简化了模组结构,减小了模组体积和重量,还提供了更大的镜片移动行程和推力。
为了实现上述目的,根据本申请的第一方面,提出一种
用于驱动镜头的驱动组件,其特征在于,包括:
驱动载体,包括第一载体和第二载体,其分别用于承载镜头的至少一个可调群组,其中第一载体和第二载体依次布置在沿调整方向的同一轴线上,并能够彼此独立地沿所述调整方向移动;
第一驱动元件;
第一摩擦板,其设置在第一载体的载体主体与第一驱动元件之间,其中第一摩擦板的一端与第一载体的载体主体固定连接,另一端与第一驱动元件作用连接;
第二驱动元件;
第二摩擦板,其设置在第二载体的载体主体与第二驱动元件之间,其中第二摩擦板的一端与第二载体的载体主体固定连接,另一端与第二驱动元件作用连接;
其中第一驱动元件与第二驱动元件沿所述轴线观察是中心对称的。
根据本申请的第一方面的一些实施方式,所述第一驱动元件与第二驱动元件构造成结构相同的标准件。
根据本申请的第一方面的一些实施方式,所述驱动组件还包括第一预压力装置,其设置成给第一驱动元件提供预压力,使得第一驱动元件在所述预压力的作用下与第一摩擦板保持摩擦接触,并且
所述驱动组件还包括第二预压力装置,其设置成给第二驱动元件提供预压力,使得第二驱动元件在所述预压力的作用下与第二摩擦板保持摩擦接触。
根据本申请的第一方面的一些实施方式,在第一预压力装置与第一摩擦板之间设置第一摩擦机构,使得第一摩擦板与第一预压力装置通过第一摩擦机构活动连接,并且
在第二预压力装置与第二摩擦板之间设置第二摩擦机构,使得第二摩擦板与第二预压力装置通过第二摩擦机构活动连接。
根据本申请的第一方面的一些实施方式,在第一摩擦板的一个侧面上设置第一驱动元件,在第一摩擦板的相对的另一个侧面上设置第一摩擦机构,使得第一摩擦板被夹持在第一驱动元件和第一摩擦机构之间,并且第一摩擦板能在第一驱动元件的驱动作用下沿着所述调整方向移动,并且,
在第二摩擦板的一个侧面上设置第二驱动元件,在第二摩擦板的相对的另一个侧面上设置第二摩擦机构,使得第二摩擦板被夹持在第二驱动元件和第二摩擦机构之间,并且第二摩擦板能在第二驱动元件的驱动作用下沿着所述调整方向移动,
其中第一摩擦机构和第二摩擦机构沿所述轴线观察是中心对称的。
根据本申请的第一方面的一些实施方式,所述第一摩擦机构和第二摩擦机构构造成结构相同的标准件。
根据本申请的第一方面的一些实施方式,所述第一驱动元件和第一摩擦机构形成的第一结构单元与第二驱动元件和第二摩擦机构形成的第二结构单元构造成结构相同的标准件,并且沿所述轴线观察是中心对称的。
根据本申请的第一方面的一些实施方式,所述第一摩擦机构包括构造在第一预压力装置和/或第一摩擦板上的凹槽或者辊道以及布置在所述凹槽或者辊道中的滚珠或滑块,并且
所述第二摩擦机构包括构造在第二预压力装置和/或第二摩擦板上的凹槽或者辊道以及布置在所述凹槽或者辊道中的滚珠或滑块。
根据本申请的第一方面的一些实施方式,所述第一预压力装置和第二预压力装置分别包括上夹部、下夹部以及连接所述上夹部和下夹部的连接部,
其中所述第一预压力装置将第一摩擦板以及布置在第一摩擦板两侧的第一驱动元件和第一摩擦机构弹性夹持在第一预压力装置的上夹部和下夹部之间,并且
所述第二预压力装置将第二摩擦板以及布置在第二摩擦板两侧的第二驱动元件和第二摩擦机构弹性夹持在第二预压力装置的上夹部和下夹部之间。
根据本申请的第一方面的一些实施方式,在第一摩擦板的两个相对侧面上分别设置一个第一驱动元件,使得第一摩擦板被夹持在这两个第一驱动元件之间,并能在这两个第一驱动元件的协同驱动作用下沿着所述调整方向移动,并且
在第二摩擦板的两个相对侧面上分别设置一个第二驱动元件,使得第二摩擦板被夹持在这两个第二驱动元件之间,并能在这两个第二驱动元件的协同驱动作用下沿着所述调整方向移动,
其中两个第一驱动元件和两个第二驱动元件沿所述轴线观察是中心对称的。
根据本申请的第一方面的一些实施方式,所述第一预压力装置和第二预压力装置分别包括上夹部、下夹部以及连接所述上夹部和下夹部的连接部,
其中第一预压力装置将第一摩擦板以及布置在第一摩擦板两侧的第一驱动元件弹性夹持在第一预压力装置的上夹部和下夹部之间,并且
第二预压力装置将第二摩擦板以及布置在第二摩擦板两侧的第二驱动元件弹性夹持在第二预压力装置的上夹部和下夹部之间。
根据本申请的第一方面的一些实施方式,所述第一驱动元件和第二驱动元件构造成压电致动器,分别包括压电板和固定在压电板上的摩擦驱动部,其中第一驱动元件的摩擦驱动部与第一摩擦板作用连接,从而能够驱动第一摩擦板沿着调整方向移动,第二驱动元件的摩擦驱动部与第二摩擦板作用连接,从而能够驱动第二摩擦板沿着调整方向移动。
根据本申请的第一方面的一些实施方式,所述驱动组件还包括导引装置,用于引导第一载体和第二载体沿着所述调整方向移动,其中所述导引装置包括至少一个导杆,所述导杆平行于所述调整方向穿过第一载体和第二载体,从而使第一载体和第二载体能沿着导引装置移动。
根据本申请的第一方面的一些实施方式,所述第一载体包括从第一载体的载体主体向外延伸的第 一连接端和从第一载体的载体主体向外延伸的第二连接端,其中第一连接端和第二连接端分别位于第一载体的载体主体的彼此相对的两侧,其中第一载体的第一连接端具有第一连接孔,第一载体的第二连接端具有第二连接孔,并且
第二载体还包括从第二载体的载体主体向外延伸的第一连接端和从第二载体的载体主体向外延伸的第二连接端,其中第一连接端和第二连接端分别位于第二载体的载体主体的彼此相对的两侧,其中第二载体的第一连接端具有第一连接孔,第二载体的第二连接端具有第二连接孔,
其中所述导引装置包括第一导杆和第二导杆,其中第一导杆穿过第一载体的第二连接端的第二连接孔和第二载体的第一连接端的第一连接孔,第二导杆穿过第一载体的第一连接端的第一连接孔和第二载体的第二连接端的第二连接孔,从而第一载体和第二载体能分别在第一驱动元件和第二驱动元件的驱动下沿着导引装置的第一导杆和第二导杆单独移动,其中第一导杆和第二导杆彼此平行地沿着所述调整方向布置。
根据本申请的第一方面的一些实施方式,所述导引装置的第一导杆和第二导杆具有高度差。
根据本申请的第一方面的一些实施方式,所述第一载体的第二连接端具有安置槽,第一摩擦板嵌入到第二连接端的所述安置槽中并与第一载体的载体主体固定连接,并且第二载体的第二连接端具有安置槽,第二摩擦板嵌入到第二连接端的所述安置槽中并与第二载体的载体主体固定连接。
根据本申请的第一方面的一些实施方式,在第一预压力装置与第一驱动元件之间设置第一驱动基板,第一驱动基板与第一驱动元件电连接,用于给第一驱动元件输送电流,其中第一驱动基板通过第一预压力装置夹持在第一驱动元件上,并且
在第二预压力装置与第二驱动元件之间设置第二驱动基板,第二驱动基板与第二驱动元件电连接,用于给第二驱动元件输送电流,其中第二驱动基板通过第二预压力装置夹持在第二驱动元件上,
其中第一驱动基板和第二驱动基板沿所述轴线观察是中心对称的。
根据本申请的第一方面的一些实施方式,所述第一驱动基板包括第一导电端、第二导电端以及连接所述第一导电端和第二导电端的连接带,其中第一驱动基板的第一导电端通过第一预压力装置的上夹部夹持在对应的驱动元件上,所述第一驱动基板的第二导电端通过第一预压力装置的下夹部夹持在对应的驱动元件上,并且
第二驱动基板包括第三导电端、第四导电端以及连接所述第三导电端和第四导电端的连接带,其中第二驱动基板的第三导电端通过第二预压力装置的下夹部夹持在对应的驱动元件上,所述第二驱动基板的第四导电端通过第二预压力装置的上夹部夹持在对应的驱动元件上。
根据本申请的第一方面的一些实施方式,所述驱动组件还包括第一承载机构和第二承载机构,第一承载机构和第二承载机构分别具有形成安置空间的多个定位柱,其中第一驱动元件在第一预压力装置的夹持下设置在第一承载机构的安置空间中,并且第一驱动基板的第一导电端和第二导电端分别在第一承载机构的安置空间外部固定在第一承载机构的定位柱上,并且
第二驱动元件在第二预压力装置的夹持下设置在第二承载机构的安置空间中,并且第二驱动基板的第三导电端和第四导电端分别在第二承载机构的安置空间外部固定在第二承载机构的定位柱上。
根据本申请的第一方面的一些实施方式,所述第一承载机构和第二承载机构还分别具有承载连接 部,所述承载连接部与驱动壳体固定连接,其中所述驱动壳体包括上壳体和与所述上壳体连接成封闭结构的下壳体。
根据本申请的第二方面,提出一种摄像模组,包括:
如前所述的用于驱动镜头的驱动组件;
感光组件,用于接受光信号并将接收的光信号转变为图像信号;
镜头组,包括固定群组和可调群组,其中所述驱动组件的驱动元件设置用于驱动所述镜头组的可调群组。
根据本申请的第二方面的一些实施方式,所述镜头组的可调群组包括变焦群组和对焦群组,其中所述驱动组件的第一载体用于承载变焦群组的第一载体,所述驱动组件的第二载体用于承载对焦群组,其中第一载体和第二载体能够分别被第一驱动元件和第二驱动元件单独驱动。
通过对随后的描述和附图的理解,本申请进一步的目的和优势将得以充分体现。
本申请的这些和其它目的、特点和优势,通过下述的详细说明,附图和权利要求得以充分体现。
以下将结合附图和实施例来对本申请的技术方案作进一步的详细描述。在附图中,除非另有说明,相同的附图标记用于表示相同的部件。其中:
图1图示了根据本申请实施例的摄像模组的示意图。
图2图示了根据本申请实施例的所述摄像模组的一个变形实施的示意图。
图3图示了根据本申请实施例的所述摄像模组的另一个变形实施的示意图。
图4图示了根据本申请实施例的所述摄像模组的感光组件的示意图。
图5图示了根据本申请实施例的所述摄像模组的防抖驱动组件的立体爆炸示意图。
图6图示了根据本申请实施例的所述防抖驱动组件中防抖可动部的立体示意图。
图7图示了根据本申请实施例的所述防抖驱动组件中防抖固定部的立体爆炸示意图。
图8图示了根据本申请实施例的所述防抖驱动组件中防抖驱动部的示意图。
图9图示了根据本申请实施例的所述防抖驱动部的压电致动器的示意图。
图10图示了根据本申请实施例的所述压电致动器的变形作动示意图。
图11图示了根据本申请实施例的所述防抖驱动组件的半剖示意图。
图12图示了根据本申请实施例的所述防抖驱动组件的另一立体示意图。
图13图示了根据本申请实施例的所述防抖驱动组件的又一立体示意图。
图14图示了根据本申请实施例的所述防抖驱动组件的另一半剖示意图。
图15图示了根据本申请实施例的所述防抖驱动部的一个变形实施的示意图。
图16图示了根据本申请实施例的所述摄像模组的防抖方法的流程图。
图17图示了根据本申请实施例的所述摄像模组的防抖过程的示意图。
图18图示了根据本申请实施例的所述摄像模组的防抖方法的另一流程图。
图19图示了根据本申请实施例的所述摄像模组的防抖方法的另一流程图。
图20图示了根据本申请实施例的所述摄像模组的防抖方法的另一流程图。
图21图示了根据本申请实施例的摄像模组的示意图。
图22图示了根据本申请实施例的所述摄像模组的一个变形实施的示意图。
图23图示了根据本申请实施例的所述摄像模组的另一个变形实施的示意图。
图24图示了根据本申请实施例的所述摄像模组的感光组件的示意图。
图25图示了根据本申请实施例的所述摄像模组的防抖驱动组件的立体爆炸示意图。
图26图示了根据本申请实施例的所述防抖驱动组件中防抖可动部的立体示意图。
图27图示了根据本申请实施例的所述防抖驱动组件中防抖固定部的立体爆炸示意图。
图28图示了根据本申请实施例的所述防抖驱动组件中防抖驱动部的示意图。
图29图示了根据本申请实施例的所述防抖驱动部的压电致动器的示意图。
图30图示了根据本申请实施例的所述压电致动器的变形作动示意图。
图31图示了根据本申请实施例的所述防抖驱动组件的半剖示意图。
图32图示了根据本申请实施例的所述防抖驱动组件的另一立体示意图。
图33图示了根据本申请实施例的所述防抖驱动组件的又一立体示意图。
图34图示了根据本申请实施例的所述防抖驱动组件的另一半剖示意图。
图35图示了根据本申请实施例的所述防抖驱动部的一个变形实施的示意图。
图36图示了根据本申请实施例的所述防抖驱动部的另一个变形实施的示意图。
图37图示了根据本申请实施例的摄像模组的示意图。
图38图示了根据本申请实施例的所述摄像模组的一个变形实施的示意图。
图39图示了根据本申请实施例的所述摄像模组的另一个变形实施的示意图。
图40图示了根据本申请实施例的所述摄像模组的感光组件的示意图。
图41图示了根据本申请实施例的所述摄像模组的防抖驱动组件的立体爆炸示意图。
图42图示了根据本申请实施例的所述防抖驱动组件中防抖可动部的立体示意图。
图43图示了根据本申请实施例的所述防抖驱动组件中防抖固定部的立体爆炸示意图。
图44图示了根据本申请实施例的所述防抖驱动组件中防抖驱动部的示意图。
图45图示了根据本申请实施例的所述防抖驱动部的压电致动器的示意图。
图46图示了根据本申请实施例的所述压电致动器的变形作动示意图。
图47图示了根据本申请实施例的所述防抖驱动组件的半剖示意图。
图48图示了根据本申请实施例的所述防抖驱动组件的另一立体示意图。
图49图示了根据本申请实施例的所述防抖驱动组件的又一立体示意图。
图50图示了根据本申请实施例的所述防抖驱动组件的另一半剖示意图。
图51图示了根据本申请实施例的所述防抖驱动部的一个变形实施的示意图。
图52图示了根据本申请实施例的所述防抖驱动部的另一个变形实施的示意图。
图53图示了根据本申请实施例的摄像模组的示意图。
图54图示了根据本申请实施例的所述摄像模组的一个变形实施的示意图。
图55图示了根据本申请实施例的所述摄像模组的另一个变形实施的示意图。
图56图示了根据本申请实施例的所述摄像模组的感光组件的示意图。
图57图示了根据本申请实施例的所述摄像模组的防抖驱动组件的立体爆炸示意图。
图58图示了根据本申请实施例的所述防抖驱动组件中防抖可动部的立体示意图。
图59图示了根据本申请实施例的所述防抖驱动组件中防抖固定部的立体爆炸示意图。
图60图示了根据本申请实施例的所述防抖驱动组件中防抖驱动部的示意图。
图61图示了根据本申请实施例的所述防抖驱动部的压电致动器的示意图。
图62图示了根据本申请实施例的所述压电致动器的变形作动示意图。
图63图示了根据本申请实施例的所述防抖驱动组件的半剖示意图。
图64图示了根据本申请实施例的所述防抖驱动组件的另一立体示意图。
图65图示了根据本申请实施例的所述防抖驱动组件的又一立体示意图。
图66图示了根据本申请实施例的所述防抖驱动组件的另一半剖示意图。
图67图示了根据本申请实施例的所述防抖驱动部的一个变形实施的示意图。
图68图示了根据本申请实施例的所述防抖驱动部的另一个变形实施的示意图。
图69是根据本申请的摄像模组的一些实施例的光路示意图。
图70是根据本申请的摄像模组的一些实施例的示意剖视图。
图71是根据本申请的驱动组件的一些实施例的爆炸图。
图72是根据本申请的一些实施例的驱动载体和摩擦板的爆炸图。
图73是根据本申请的第一载体的一些实施例的轴向视图。
图74是根据本申请的第二载体的一些实施例的轴向视图。
图75是根据本申请的一些实施例的第一载体和第二载体的立体图,包括分别与第一载体和第二载体固定连接的第一摩擦板和第二摩擦板;
图76是根据本申请的一些实施例的第一载体和第二载体的轴向视图,包括分别与第一载体和第二载体固定连接的第一摩擦板和第二摩擦板,以及分别贯穿第一载体和第二载体的第一导杆和第二导杆;
图77是图76所示结构状态的立体图;
图78是根据本申请的一些实施例的第一载体和第二载体的平面图,包括分别与第一载体和第二载体固定连接的第一摩擦板和第二摩擦板,贯穿第一载体和第二载体的第一导杆和第二导杆,以及分别驱动第一摩擦板和第二摩擦板的第一和第二驱动元件;
图79是图78所示结构状态的立体图;
图80a-c是根据本申请的一些实施例的压电驱动器与摩擦板的作用关系示意图;
图81是根据本申请的一些实施例的第一载体的示意侧视图,包括组装的第一摩擦板、第一驱动元件和第一摩擦机构;
图82是根据本申请的一些实施例的第二载体的示意侧视图,包括组装的第二摩擦板、第二驱动元件和第二摩擦机构;
图83根据本申请的一些实施例的第一载体的示意侧视图,包括在第一摩擦板两侧的第一上驱动元件和第一下驱动元件;
图84a-d是根据本申请的一些实施例的压电驱动原理示意图;
图85是根据本申请的一些实施例的第二载体的示意侧视图,包括在第二摩擦板两侧的第二上驱动元件和第二下驱动元件;
图86是根据本申请的一些实施例的驱动组件的立体图;
图87是根据本申请的一些实施例的预压力装置的立体图;
图88是根据本申请的一些实施例的驱动基板的立体图;
图89是根据本申请的一些实施例的驱动组件的立体图,包括安装的预压力装置和驱动基板;
图90a是根据本申请的一些实施例的驱动组件的轴向视图,其中每个摩擦板在两侧分别配有一个驱动元件和一个摩擦机构;
图90b是根据本申请的另一些实施例的驱动组件的轴向视图,其中每个摩擦板在两侧分别配有一个上驱动元件和一个下驱动元件;
图91是根据本申请的一些实施例的驱动组件的立体图,包括安装的承载机构;
图92是根据本申请的一些实施例的承载机构的立体图;
图93是根据本申请的一些实施例的驱动组件的立体图,包括具有上壳体和下壳体的驱动壳体;
图94是根据本申请的一些实施例的用于驱动镜头的驱动组件的组装方法的流程示意图;
图95是根据本申请的一些实施例的摄像模组的组装方法的流程示意图。
为了更好地理解本申请,将参考附图对本申请的各个方面做出更详细的说明。应理解,这些详细说明只是对本申请的示例性实施方式的描述,而非以任何方式限制本申请的范围。在说明书全文中,相同的附图标号指代相同的元件。表述“和/或”包括相关联的所列项目中的一个或多个的任何和全部组合。
应注意,在本说明书中,第一、第二、第三等的表述仅用于将一个特征与另一个特征区分开来,而不表示对特征的任何限制。因此,在不背离本申请的教导的情况下,下文中讨论的第一驱动元件也可被称作变焦驱动元件,第二驱动元件也可被称作对焦驱动元件。类似地,第一驱动基板也可被称作变焦基板,第二驱动基板也可被称作对焦基板,等等。
在附图中,为了便于说明,已稍微夸大了透镜的厚度、尺寸和形状。具体来讲,附图中所示的结构形状通过示例的方式示出。附图仅为示例而并非严格按比例绘制。
还应理解的是,用语“包括”、“包括有”、“具有”、“包含”和/或“包含有”,当在本说明书中使用时表示存在所陈述的特征、元件和/或部件,但不排除存在或附加有一个或多个其它特征、元件、部件和/或它们的组合。此外,当诸如“...中的至少一个”的表述出现在所列特征的列表之后时,修饰整个所列特征,而不是修饰列表中的单独元件。此外,当描述本申请的实施方式时,使用“可”表示“本申请的一个或多个实施方式”。并且,用语“示例性的”旨在指代示例或举例说明。
除非另外限定,否则本文中使用的所有用语(包括技术用语和科学用语)均具有与本申请所属领域普通技术人员的通常理解相同的含义。还应理解的是,用语(例如在常用词典中定义的用语)应被解释为具有与它们在相关技术的上下文中的含义一致的含义,并且将不被以理想化或过度正式意义解释,除非本文中明确如此限定。
需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本申请。
示例性摄像模组
如图1至图15所示,根据本申请实施例的摄像模组被阐明,其包括感光组件30,被保持于所述感光组件30的感光路径上的光学镜头10、用于驱动所述感光组件30进行移动以实现所述摄像模组的光学性能调整的防抖驱动组件20。
相应地,在本申请实施例中,所述防抖驱动组件20具有位于其中间区域的安置槽,其中,所述感光组件30以被收容于所述安置槽的方式安装于所述防抖驱动组件20内,这样,当所述防抖驱动组件20被驱动时其能承载着所述感光组件30沿着预设方向进行移动以实现所述摄像模组的光学性能的调整,例如,进行光学防抖等。并且,所述光学镜头10以被固定于所述防抖驱动组件20的顶面的方式被安装于所述防抖驱动组件20上且所述光学镜头10位于所述感光组件30的感光路径上,这样所述感光组件30可以接收从所述光学镜头10投射出的光线以进行成像。
更具体地,如图1至图3所示,被保持于所述感光组件30的感光路径上以采集外界成像光线的所述光学镜头10包括镜筒11和被安装于所述镜筒11内的镜片组,其中,所述镜片组包括至少一光学镜片12,且所述至少一光学镜片12的数量并不受限。
在本申请一个具体的示例中,所述光学镜头10以直接安置于所述防抖驱动组件20的顶面的方式被固定地设置于所述感光组件30的感光路径上。在本申请的另一示例中,所述光学镜头10可通过一镜座13被安置于所述防抖驱动组件20的顶面上,其中,所述镜座13具有形成于其中间的一通孔,被所述光学镜头10折射的光线能够通过该通孔入射至所述感光组件30。
在本申请的又一示例中,所述光学镜头10可通过一镜头驱动部分14被安置于所述防抖驱动组件20的顶面上,其中,所述镜头驱动部分14具有形成于其中的安置空间,所述光学镜头10被安装于所述镜头驱动部分14的安置空间内,并且所述镜头驱动部分14能够驱动所述光学镜头10移动,以实现光学对焦和/或光学防抖功能。在该示例中,所述镜头驱动部分14可以是音圈镜头驱动部分14、压电镜头驱动部分14、SMA(形状记忆合金,Shape Memory Alloy)镜头驱动部分14等类型的驱动镜头驱动部分14。进一步的,在本申请的一示例中,所述镜座13或所述镜头驱动部分14可以直接容纳所述光学镜头10的多个光学镜片12;在本申请的另一示例中,所述镜座13或镜头驱动部分14可以容纳所述光学镜头10的所述镜筒11和设置于所述镜筒11中的多个光学镜片12。
值得一提的是,在该具体示例的一些实施例中,所述镜头驱动部分14还包括镜头对焦部,所述镜头对焦部适于驱动所述光学镜头10在Z轴方向平移,以调整所述光学镜头10相对所述感光组件30的距离,实现所述光学镜头10的对焦功能。并且,在该具体示例的一些实施例中,所述镜头驱动部分14还可以包括镜头防抖部,所述镜头防抖部适于驱动所述光学镜头10在X轴和Y轴方向上平移和/或 绕Z轴方向旋转,以实现所述光学镜头10的平移防抖和/或旋转防抖;或者,所述镜头防抖部适于驱动所述光学镜头10在绕X轴方向和绕Y方向旋转,以实现所述光学镜头10的倾斜防抖。需指出的是,所述镜头驱动部分14可以仅包含所述镜头对焦部或者所述镜头防抖部;所述镜头驱动部分14还可以同时包括所述镜头对焦部和所述镜头防抖部,从而所述镜头驱动部分14不仅可以实现镜头对焦功能还可以实现镜头防抖功能。
如图4所示,所述感光组件30包括线路板31、感光芯片32、电子元件33、底座34和滤光元件35。所述感光芯片32设置于所述线路板31,并电连接于所述线路板31,其中,所述底座34被设置于所述线路板31上且位于所述感光芯片32的周侧,所述滤光元件35以被安装于所述底座34的方式被被保持于所述感光芯片32的感光路径上,所述感光芯片32包括一感光区和围绕于所述感光区的非感光区。
在本申请的一个示例中,所述感光芯片32被安装于所述线路板31的上表面,并通过打金线的方式电连接于所述线路板31。当然,在本申请其他示例中,所述感光芯片32还能以其他方式被设置于所述线路板31和/或其他方式电连接于所述线路板31,例如,以芯片倒装的方式贴附于所述线路板31的下表面,对此,并不为本申请所局限。应可以理解,在本申请实施例中,所述感光芯片32的感光路径形成所述感光组件30的感光路径。
所述底座34被设置于所述线路板31上以封装位于所述线路板31上的电子元件33且用于支撑其他部件。在本申请一个具体的示例中,所述基座被实施为单独成型的塑料支架,其通过黏着剂附着于所述线路板31的表面,并用于支撑其他部件。当然,在本申请其他示例中,所述基座还能以其他方式形成于所述线路板31,例如,所述基座被实施为模塑基座,其通过模塑工艺一体成型于所述线路板31的预设位置,对此,并不为本申请所局限。
在本申请实施例中,所述滤光元件35被保持于所述感光芯片32的感光路径上,用于对进入所述感光芯片32的成像光线进行过滤。在一个具体的示例中,所述滤光元件35被安装于所述底座34上且对应于所述感光芯片32的至少感光区域,通过这样的方式,所述滤光元件35被保持于所述感光芯片32的感光路径上。值得一提的是,在本申请其他示例中,所述滤光元件35还能够以其他方式被安装于所述底座34上,例如,先在所述底座34上设置滤光元件支架,进而将所述滤光元件35安装在所述滤光元件35支架上,也就是,在该示例中,所述滤光元件35可通过其他支撑件被间接地安装于所述底座34上。并且,在本申请的其他示例中,所述滤光元件35还能够被安装于所述可变焦摄像模组的其他位置,例如,所述滤光元件35形成于所述光学镜头10内(例如,作为一层滤光膜附着于所述变焦镜头组的某片光学透镜的表面),对此,并不为本申请所局限。
如前所述,为了满足越来越广泛的市场需求,高像素、大芯片、小尺寸是现有摄像模组不可逆转的发展趋势。随着感光芯片32朝着高像素和大芯片的方向发展,与感光芯片32适配的光学部件(例如,滤光元件35、光学镜头10)的尺寸也逐渐增大,这给用于驱动光学部件以进行光学性能调整(例如,光学对焦、光学防抖等)的驱动元件带来的新的挑战。
具体地,现有的用于驱动光学部件的驱动元件为电磁式马达,例如,音圈马达(Voice Coil Motor:VCM)、形状记忆合金驱动器(Shape of Memory Alloy Actuator:SMA)等。然而,随着光学部件尺寸 增加而导致的重量增加,现有的电磁式马达已逐渐无法提供足够的驱动力来驱动光学部件移动。量化来看,现有的音圈马达和形状记忆合金驱动器仅适于驱动重量小于100mg的光学部件,也就是,如果光学部件的重量超过100mg,现有的驱动器将无法满足摄像模组的应用需求。
此外,随着移动终端设备朝着小型化和薄型化的方向发展,驱动元件内部的部件布设密度也随之提高。相应地,现有的音圈马达内部设有线圈和磁铁,当两个磁铁距离过近(小于7mm),其内部磁场会产生相互影响,导致磁铁产生位移或抖动,降低其驱动控制的稳定性。
因此,需要一种适配的用于摄像模组的新型驱动方案,且,新型的驱动器不仅能满足摄像模组对于光学性能调整的驱动要求,且能够满足摄像模组轻型化和薄型化的发展需求。
经研究和试验,本申请提出了一种新型的驱动器,不仅相对具有更大的驱动力和更优的驱动性能(具体地包括:更高精度的驱动控制和更长的驱动行程),还能够适应于当下摄像模组轻型化和薄型化的发展趋势。
特别地,该种新型的驱动器为一种具有新型结构的压电致动器,该压电致动器能够满足所述摄像模组对于驱动器的技术要求。并且,进一步地采用合适的布置方式将所述压电致动器布置于所述摄像模组内以形成用于驱动所述感光组件30进行位置调整的防抖驱动组件20,以使得其满足所述摄像模组的结构设计要求和尺寸设计要求。
如图5至图15所示,所述防抖驱动组件20包括防抖可动部21、防抖驱动部22、防抖固定部23、预压力装置24、导引装置25及驱动基板26,其中,所述防抖可动部21适于安装所述感光组件30于其上,所述防抖可动部21相对于所述防抖固定部23可移动,所述防抖驱动部22被设置于所述防抖固定部23和所述防抖可动部21之间,且所述防抖驱动部22摩擦地耦接于所述防抖可动部21以通过所述防抖驱动部22所提供的摩擦驱动力驱动所述防抖可动部21相对于所述防抖固定部23进行移动,通过这样的方式,来驱动所述感光组件30进行移动从而实现所述摄像模组的光学性能的调整。
特别地,在本申请实施例中,所述感光组件30可联动地安装于所述防抖可动部21,例如,在本申请一个具体的示例中,所述感光组件30被固定地安装于所述防抖可动部21上,从而当所述防抖驱动部22驱动所述防抖可动部21时,所述感光组件30也被所述防抖可动部21所联动。所述防抖驱动部22被设置于所述防抖固定部23和所述防抖可动部21之间,例如,在本申请一个具体的示例中,所述防抖驱动部22以分别连接所述防抖可动部21和所述防抖固定部23的方式被设置于所述防抖固定部23和所述可动部之间。所述防抖驱动部22适于驱动所述感光组件30在X轴方向(即,X轴所设定的方向)和Y轴方向(即,Y轴所设定的方向)上平移和/或绕Z轴方向(即,Z轴所设定的方向)旋转,以实现所述感光组件30的平移防抖和/或旋转防抖。
值得一提的是,在本申请实施例中,所述X轴方向和所述Y轴方向相互垂直,所述Z轴方向垂直于所述X轴方向和所述Y轴方向所在平面,换言之,X轴、Y轴和Z轴构成了三维立体坐标系。
具体地,在本申请实施例中,所述防抖固定部23具有收容腔,所述防抖可动部21和所述防抖驱动部22被收容于所述防抖固定部23的收容腔内,也就是说,在本申请实施例中,所述防抖固定部23可以将所述防抖可动部21与所述防抖驱动部22容置其中。并且,所述防抖固定部23的顶面用于设置所述光学镜头10,以使得所述光学镜头10能够通过所述防抖固定部23安置于所述感光组件30的感 光路径上。所述预压力装置24设置于所述防抖固定部23与所述防抖驱动部22之间,所述预压力装置24通过其所产生的预压力保持所述防抖驱动部22与所述防抖可动部21之间摩擦地耦接。所述导引装置25设置于所述防抖可动部21与所述防抖固定部23之间,所述防抖可动部21通过所述导引装置25悬持在所述防抖固定部23中,用于为所述芯片防抖可动部21的移动提供引导。所述驱动基板26与所述防抖驱动部22电连接,用于实现所述防抖驱动组件20的电路导通。
更具体地,在本申请实施例中,所述防抖可动部21为一动子,其能够在所述防抖驱动部22的驱动下在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转,以实现所述感光组件30的平移防抖和/或旋转防抖功能。本申请中,由于所述防抖驱动部22采用特殊的驱动器作为驱动元件,所述防抖可动部21的数量为一,即仅需一个所述防抖可动部21可在所述防抖驱动部22的驱动下实现在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转的运动。
本领域普通技术人员应知晓,在传统的压电马达的驱动方案中,需要配置两个可动部(即,配置两个可动载体)方能实现在X轴方向和Y轴方向上的平移运动,即一个可动载体在X方向压电马达的驱动下实现X轴方向的移动,另一个可动载体在Y方向压电马达的驱动下实现Y轴方向的移动。相对于传统的压电马达方案,本申请仅需要通过一个防抖可动部21(即,仅需要一个可动载体)就可以实现在X轴方向和Y轴方向上的平移运动。相应地,通过减少所述防抖可动部21的数量以降低所述防抖驱动组件20的高度,进而减少摄像模组的高度,且由于所述防抖可动部21的数量的减小,所述防抖驱动组件20的内部元件的布置会显得更为紧凑,以利于缩减所述防抖驱动组件20的长宽尺寸。
如图5和图6所示,在本申请实施例中,所述防抖可动部21包括载体主体211、载体延伸臂212以及摩擦板213。所述载体主体211形成用于安装所述感光组件30于其内的所述安置槽,其中,所述感光组件30被固定于所述安置槽内以使得所述感光组件30能够在所述芯片防抖可动部21的带动下进行移动。
优选地,在本申请实施例中,所述载体主体211具有形成其侧壁的一开槽,以使得所述感光组件30的线路板31能够通过该开槽伸出并延伸至所述电子设备的主板。也就是,在本申请实施例中,所述载体主体211具有形成于其侧部的门,以通过所述门允许所述感光组件30的线路板31穿过并伸出所述防抖驱动组件20。
如图5和图6所示,在本申请实施例中,所述载体延伸臂212自所述载体主体211向外延伸,例如,所述载体延伸臂212一体地自所述载体主体211向外延伸。特别地,在本申请实施例中,所述载体延伸臂212与所述载体主体211的底面之间具有一定的高度差,也就是说,所述载体延伸臂212与所述载体主体211不在同一高度延伸。更明确地,在本申请实施例中,所述载体延伸臂212的高度高于所述载体主体211的高度,所述载体延伸臂212自所述载体主体211向上并向外延伸。这里,本申请中所指的“向上”表示指由像侧到物侧,“向外”表示远离光轴的方向。其中,具有高度差的所述载体延伸臂212与所述载体主体211与所述防抖固定部23相配合形成一沿Z轴方向的容置空间,所述容置空间可以用于安置所述防抖驱动部22,以使得所述摄像模组的结构更加紧凑。
如图5和图6所示,在本申请实施例中,所述摩擦板213设置于所述载体延伸臂212,例如,所 述摩擦板213一体地形成于所述载体延伸臂212,当然所述摩擦板213与所述载体延伸臂212也可以具有分体式结构,例如,所述摩擦板213为单独的部件并通过黏着剂附着于所述载体延伸臂212。优选地,所述摩擦板213被设置于所述载体延伸臂212的朝向于所述防抖驱动部22的一侧,即,被设置于所述载体延伸臂212的下表面。相应地,在本申请实施例中,所述摩擦板213被夹持地设置于所述防抖可动部21与所述防抖驱动部22之间,以通过所述防抖驱动部22和所述预压力装置24使得所述防抖可动部21被摩擦地耦合于所述载体延伸臂212。应可以理解,所述摩擦板213的作用在于提高所述防抖驱动部22和所述防抖可动部21之间的摩擦力。
并且,如图5和图6所示,在本申请实施例中,所述载体延伸臂212具有分别形成于相对的两边的两个U型槽,其中,在所述防抖可动部21的安装过程中,可以通过该U型槽对所述防抖可动部21进行夹持,便于安装。
如图5至图7所示,在本申请一个具体的示例中,所述防抖固定部23包括相互扣合的上盖231和基底232,其中,所述上盖231与所述基底232之间形成一收容腔,所述收容腔用于将收容所述防抖可动部21、防抖驱动部22、预压力装置24、导引装置25及驱动基板26于其中,通过这样的方式,不仅可以保护所述防抖驱动组件20中的各个元件发生撞击损坏,也可以用于避免灰尘、脏污或杂散光进入所述防抖驱动组件20的内部。
更具体地,在该具体示例中,所述上盖231被套设于所述基底232的上方,并且所述上盖231具有与所述感光组件30相对应的开口,以使得经过物体反射的光线能够到达所述感光组件30。所述上盖231和基底232的材质可以为金属,例如冷轧碳素薄钢板(SPCC)或者不锈钢等导磁材料,不仅起到一定的导磁作用(即,加强磁场),而且能够有助于所述感光组件30的散热。应可以理解,在该具体示例中,所述上盖231与基底232均为定子,即在实现所述感光组件30的光学防抖功能时,所述上盖231与基底232保持不动,其中,所述光学镜头10固定设置于所述上盖231,并位于所述感光组件30的感光路径上。
当所述上盖231与基底232均为金属材质时,所述上盖231与基底232的四角处需设置有缺口,与所述缺口相邻的边可以进行弯折,以使得所述上盖231一基底232能够嵌套固定。由于在本申请中,所述感光组件30设置于所述防抖可动部21的安置槽内,因此即使通过所述防抖固定部23的缺口进入的灰尘也并不会进入到所述感光组件30,进而不会对成像效果造成影响。
也就是说,在本申请实施例中,所述防抖固定部23具有收容腔,所述防抖可动部21被悬持于所述防抖固定部23的收容腔内。具体地,所述防抖固定部23包括基底232和与所述基底232相扣合的上盖231,所述收容腔形成于所述上盖231和所述基底232之间。并且,所述防抖可动部21与所述基底232之间具有间隙,所述防抖可动部21与所述上盖231之间具有间隙,通过这样的方式,所述防抖可动部21被悬持于所述防抖固定部23的收容腔内。
应注意到,在该具体示例中,所述上盖231的底面与所述防抖可动部21的载体延伸臂212的顶面之间具有一间隙,所述间隙可以用于容置所述导引装置25,以通过所述导引装置25使得所述防抖可动部21支撑与所述防抖固定部23的上盖231。所述基底232的底面与所述防抖可动部21的底面之间也具有一间隙,即所述防抖可动部21与所述防抖固定部23的上盖231和基底232都不直接接触,以 减小所述防抖可动部21在移动过程中摩擦力的产生。
进一步地,如图8至图14所示,在本申请实施例中,所述防抖驱动部22设置于所述防抖可动部21与所述防抖固定部23之间,优选地,所述防抖驱动部22设置于所述防抖可动部21的载体延伸臂212与所述防抖固定部23的基底232之间。所述防抖驱动部22在被安装于所述防抖固定部23后,其与所述防抖可动部21摩擦接触,以通过所述防抖驱动部22驱动所述防抖可动部21在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转。应注意到,在本申请实施例中,所述防抖驱动部22被设置于所述防抖可动部21的载体主体211的侧部,即,所述防抖驱动部22被设置于所述载体延伸臂212和所述基底232所形成的容置空间内,以避免增加所述防抖驱动组件20的高度。
更具体地,在本申请实施例中,所述防抖驱动部22包括第一压电致动器221和第二压电致动器222,所述第一压电致动器221与第二压电致动器222被分别设置于所述防抖驱动组件20的相对的两侧。优选地,在本申请实施例中,所述第一压电致动器221和所述第二压电致动器222相互平行地布设于该感光组件30的相对的两侧,且所述第一压电致动器221和所述第二压电致动器222适于作动所述防抖可动部21和该感光组件30在X轴和Y轴所设定的XOY平面内移动或绕着垂直于所述X轴和所述Y轴的Z轴在所述XOY平面内旋转。
所述第一压电致动器221与所述第二压电致动器222具有相同的高度,以使得所述防抖可动部21设置于所述防抖驱动部22上不会产生倾斜,也就是,所述防抖可动部21被平稳地支持于所述第一压电致动器221和所述第二压电致动器222上。应可以理解,在本申请一些示例中,所述第一压电致动器221和所述第二压电致动器222的高度尺寸也不可不相等,但优选地,所述第一压电致动器221和所述第二压电致动器222所形成的安装面始终为平整表面,这样,所述防抖可动部21能被平稳地支持于所述第一压电致动器221和所述第二压电致动器222所形成的安装面上。
更具体地,在本申请实施例中,所述第一压电致动器221与所述第二压电致动器222沿X轴方向或Y轴方向相对平行设置,即,所述第一压电致动器221和所述第二压电致动器222相对于该感光组件30以所述X轴或者所述Y轴为对称轴被对称地布置于该感光组件30的相对的两侧。
进一步地,在本申请实施例中,所述载体延伸臂212自所述载体主体211向外延伸,因此所述载体延伸臂212与所述基底232之间形成一容置空间,所述第一压电致动器221与所述第二压电致动器222分别被设置该容置空间内,并且所述第一压电致动器221和第二压电致动器222固定于所述基底232,并沿高度方向摩擦地耦接于设置于所述载体延伸臂212的下表面的所述摩擦板213。
在本申请实施例中,所述第一压电致动器221与所述第二压电致动器222被实施为同一种压电致动器。具体地,在本申请实施例中,所述压电致动器为行波式压电致动器,所述行波式压电致动器具有纳米级的步级精度,能够达到更极致的光学系统要求。并且,所述压电致动器推力较一般VCM马达(Voice coil Motor,音圈马达)推力大10倍,相对于一般VCM马达,所述压电致动器并不需要使用线圈磁铁等部件,避免了电磁干扰,降低可靠性风险。并且本申请中使用的压电致动器的移动分辨率为1nm,可达成超分0.5um高精度要求。所述压电致动器为一长方体结构,即在XOY平面上,所述压电致动器的截面为一长方形结构,包括沿长度方向的两条长边和沿宽度方向的两条短边。由于所述压电致动器本身的结构,所述压电致动器被相对平行地设置于感光组件30的两侧,即所述第一压电 致动器221与所述第二压电致动器222以X轴或Y轴为对称轴相对平行地设置于所述防抖固定部23上。通过这种设置方式可以使得所述第一压电致动器221和所述第二压电致动器222保持更好的一致性,从而所述感光组件30在被驱动时能够保持平稳的移动。
如图9所示,所述压电致动器包括压电陶瓷板223和摩擦驱动部224,在给所述压电致动器提供电源激励后,所述压电致动器的压电陶瓷板223产生两种面型变化,从而带动所述摩擦驱动部224产生沿X轴方向和/或Y轴方向的单向偏摆往复运动,由于所述摩擦驱动部224与摩擦板213之间的摩擦接触,进而带动所述摩擦板213移动。
具体地,当所述压电致动器被一种电源激励后,所述压电陶瓷板223会产生沿其长度方向波浪形运动形态,所述摩擦部在压电陶瓷片带动下沿其长度方向发生偏摆运动,从而带动所述摩擦板213沿所述压电致动器的长度方向移动;当所述压电致动器被另一种电源激励后,所述压电陶瓷板223会产生沿其宽度方向蛇形运动形态,所述摩擦部在带动下沿其宽度方向发生偏摆运动,从而带动所述摩擦板213沿所述压电致动器的宽度方向移动。
在本申请的一示例中,所述压电致动器可以分别实现沿其长度方向或宽度方向的面型变化,也就是,所述压电致动器可选择沿其长度方向或者沿其宽度方向的面型变化。当所述压电致动器沿X轴方向设置,其长度方向为沿X轴方向,宽度方向为沿Y轴方向;当所述压电致动器沿Y轴方向设置,其长度方向为沿Y轴方向,宽度方向为沿X轴方向。相对于现有的压电马达仅能实现一个方向的驱动,本申请中的压电致动器可以产生不同的波形以进行X、Y方向运动,并且利用第一压电致动器221与第二压电致动器222的配合还能达成Z轴旋转运动。并且,本申请的所述压电致动器的高度为0.7mm~0.9mm,可隐藏于所述防抖驱动组件20中以降低所述防抖驱动组件20的高度。
因此,在所述压电致动器的驱动下,仅需要一个所述防抖可动部21就能够实现在XOY平面内的移动,从而带动所述感光组件30实现平移防抖和/或旋转防抖功能,相对于现有的压电马达减少了所述防抖可动部21的数量,不仅简化了所述摄像模组的结构,并且有利于减小摄像模组的高度。
相应地,所述第一压电致动器221包括第一压电陶瓷板2211和第一摩擦驱动部2212。所述第一压电陶瓷板2211由非常小的压电陶瓷组成,在给所述第一压电陶瓷板2211提供电源激励后,通过所述第一压电陶瓷板2211的逆压电效应,所述第一压电陶瓷板2211适于发生形变,从而所述第一压电陶瓷板2211上的第一摩擦驱动部2212随之运动。在本申请中,所述第一压电陶瓷板2211固定的设置于所述基底232,并且所述第一摩擦驱动部2212朝向所述防抖可动部21上的摩擦板213,并且所述第一摩擦驱动部2212与所述摩擦板213之间保持摩擦接触,以使得所述第一摩擦驱动部2212能够驱动所述摩擦板213发生移动。
具体的,在本申请的一示例中,所述第一摩擦驱动部2212位于所述摩擦板213的下方并与所述摩擦板213摩擦接触。优选地,在初始状态下,所述第一摩擦驱动部2212位于所述摩擦板213的中部位置,所述摩擦板213可以在所述防抖驱动部22的驱动下在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转移动。应可以理解,在本申请其他示例中,在初始状态下,所述第一摩擦驱动部2212也可以位于所述摩擦板213的其他位置,例如,位于所述摩擦板213的端部,对此,并不为本申请所局限。并且,更优选地,所述摩擦板213的面积大于等于所述第一压电致动器221的驱动行程。
相应地,所述第二压电致动器222包括第二压电陶瓷板2221和第二摩擦驱动部2222。所述第二压电陶瓷板2221由非常小的压电陶瓷组成,在给所述第二压电陶瓷板2221提供电源激励后,通过所述第二压电陶瓷板2221的逆压电效应,所述第二压电陶瓷板2221适于发生形变,从而所述第二压电陶瓷板2221上的第二摩擦驱动部2222随之运动。在本申请中,所述第二压电陶瓷板2221被固定地设置于所述基底232,并且所述第二摩擦驱动部2222朝向所述防抖可动部21上的摩擦板213,并且所述第二摩擦驱动部2222与所述摩擦板213之间保持摩擦接触,以使得所述第二摩擦驱动部2222能够驱动所述摩擦板213发生移动。
具体的,在本申请的一示例中,所述第二摩擦驱动部2222位于所述摩擦板213的下方,并与所述摩擦板213摩擦接触。优选地,在初始状态下,所述第二摩擦驱动部2222位于所述摩擦板213的中部位置,所述摩擦板213可以在所述防抖驱动部22的驱动下在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转移动。当然,在本申请其他示例中,在初始状态下,所述第二摩擦驱动部2222也可以位于所述摩擦板213的其他位置,例如,位于所述摩擦板213的端部,对此,并不为本申请所局限。更优选地,所述摩擦板213的面积大于等于所述第一压电致动器221的驱动行程。
进一步地,在本申请一个具体的示例中,所述第一压电致动器221与所述第二压电致动器222沿X轴方向相对平行地设置,即所述第一压电致动器221和第二压电致动器222的长度方向为沿X轴方向,所述第一压电致动器221和第二压电致动器222的宽度方向为沿Y轴方向。相应地,在该具体示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿长度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿X轴方向移动。当然,在该具体示例中,所述第一压电致动器221产生沿宽度方向的形变,所述第二压电致动器222产生沿宽度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿Y轴方向移动。
并且,在该具体示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿长度方向与之相反方向的形变(即+X方向和-X方向),所述防抖可动部21在第一压电致动器221与第二压电致动器222的驱动实现绕Z轴旋转运动。也就是说,在本申请中,所述第一压电致动器221与所述第二压电致动器222能够相互配合以驱动所述防抖可动部21在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转,以实现所述感光组件30的平移防抖和/或旋转防抖。
应可以理解,由于所述第一压电致动器221和所述第二压电致动器222既可以产生沿长度方向的形变,又可以产生沿宽度方向的形变,因此仅一个所述防抖可动部21即可在所述第一压电致动器221和所述第二压电致动器222的驱动下实现XOY平面的平移防抖和绕Z轴方向的旋转防抖。
具体地,在本申请的一示例中,所述第一压电致动器221和第二压电致动器222先产生沿长度方向的形变再产生沿宽度方向的形变,所述防抖可动部21在所述第一压电致动器221与第二压电致动器222的驱动下先沿所述X轴方向移动,再沿所述Y轴方向移动,通过这样的方式使得所述防抖可动部21能够在XOY所在的平面内进行移动。特别地,在本申请实施例中,虽然所述第一压电致动器221和所述第二压电致动器222能够产生宽度或长度方向的形变以提供两个方向的驱动力,但所述第一压电致动器221和所述第二压电致动器222所提供的驱动力仅限于长度方向和宽度方向,即,仅限于X 轴方向和Y轴方向,因此,当需要驱动所述感光组件30沿着某个倾斜方向行进以进行光学防抖时,其必须先沿着所述X轴方向移动,而后在沿着所述Y轴方向移动(当然,也可以先沿着所述Y轴方向移动,而后沿着所述X轴方向移动)而不能直接沿着该倾斜方向进行移动,这也是其与传统的通过VCM马达来进行防抖的重要区别。
进一步的,所述第一压电致动器221产生沿所述X轴方向的第一方向(例如,X轴方向的正方向)的形变,所述第二压电致动器222产生沿所述X轴方向的第二方向(例如,X轴方向的负方向)的形变,即所述第一摩擦驱动部2212产生沿所述X轴方向的正方向的驱动力,所述第二摩擦驱动部2222产生沿所述X轴方向的负方向的驱动力,这样,所述防抖可动部21和所述感光组件30在第一压电致动器221与第二压电致动器222的驱动实现绕Z轴方向的旋转运动。
在本申请的另一示例中,所述第一压电致动器221和第二压电致动器222先产生沿宽度方向的形变,再产生沿长度方向的形变,所述防抖可动部21在所述第一压电致动器221与第二压电致动器222的驱动下先沿所述Y轴方向移动,再沿所述X轴方向进行移动,使得所述防抖可动部21能够在XOY所在的平面内进行移动。所述第一压电致动器221产生沿所述X轴方向的第一方向(例如,X轴方向的正方向)的形变,所述第二压电致动器222产生沿所述X轴方向的第二方向(例如,X轴方向的负方向)的形变,即所述第一摩擦驱动部2212产生沿所述X轴方向的正方向的驱动力,所述第二摩擦驱动部2222产生沿所述X轴方向的负方向的驱动力,这样,所述防抖可动部21和所述感光组件30在第一压电致动器221与第二压电致动器222的驱动实现绕Z轴方向的旋转运动。
也就是,在本申请实施例中,所述第一压电致动器221适于沿着所述X轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动,且所述第二压电致动器222适于沿着所述X轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动。并且,所述第一压电致动器221适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动,且所述第二压电致动器222适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动。并且,所述第一压电致动器221适于沿着所述X轴所设定的第一方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的第一方向进行移动,且所述第二压电致动器222适于沿着所述X轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的第二方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动该感光组件30绕所述Z轴在所述XOY平面内进行旋转。还有,所述第一压电致动器221适于沿着所述Y轴所设定的第一方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的第一方向进行移动,且所述第二压电致动器222适于沿着所述Y轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的第二方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动该感光组件30绕所述Z轴在所述XOY平面 内进行旋转。
综上所述,在本申请中,所述防抖可动部21既可以先实现XOY平面的平移防抖,再实现绕Z轴方向的旋转防抖;也可以先现实绕Z轴方向的旋转防抖,再实现XOY平面的平移防抖。
进一步地,在本申请实施例中,所述防抖驱动部22沿高度方向被设置于所述防抖可动部21的下方,具体地,所述第一压电陶瓷板2211被设置于所述防抖固定部23,所述第一摩擦驱动部2212摩擦地耦接于所述防抖可动部21、所述第二压电陶瓷板2221被设置于所述防抖固定部23,所述第二摩擦驱动部2222摩擦地耦接于所述防抖可动部21。所述预压力装置24被夹持地固定于所述第一压电陶瓷板2211和所述基底232之间以及所述第二压电陶瓷板2221和所述基底232之间,以通过所述预压力装置24提供的预压力使得所述第一摩擦驱动部2212和所述第二摩擦驱动部2222保持与所述载体延伸臂212的摩擦板213摩擦接触。
在本申请中,所述第一压电致动器221和第二压电致动器222可以形成一自锁结构,即在停止施加电压后,所述第一压电致动器221和第二压电致动器222在所述预压力装置24的作用下将所述防抖可动部21保持在当前位置,而不会随着外部的晃动而造成位置改变,进而使得所述摄像模组的光学系统保持不变,进而避免了成像效果造成影响。也省去了在所述摄像模组中追加自锁装置,相对地减小了所述摄像模组的尺寸。由于第一压电致动器221和第二压电致动器222形成的自锁结构,因此无需保持压电致动器激活以保持其位置。
如图11和图14所示,在所述防抖驱动组件20中,所述预压力装置24提供所述防抖驱动部22和所述防抖可动部21之间的预压力,以使得所述防抖驱动部22的摩擦驱动部224能够可摩擦地耦接于所述防抖可动部21,以通过摩擦来驱动所述防抖可动部21沿着驱动的方向移动。
具体地,如图11和图14所示,所述预压力装置24包括第一弹性元件241和第二弹性元件242。所述第一弹性元件241设置于所述第一压电致动器221的第一压电陶瓷板2211与所述基底232之间,以通过所述第一弹性元件241的弹力提供所述第一压电致动器221被夹持地设置于所述防抖可动部21的载体延伸臂212与所述防抖固定部23的基底232之间,即,使得所述第一压电致动器221的第一摩擦驱动部2212抵触与所述防抖可动部21的载体延伸臂212,通过这样的方式,所述第一压电致动器221被摩擦地耦合于所述防抖可动部21。所述第二弹性元件242设置于所述第二压电致动器222的第二压电陶瓷板2221与所述基底232之间,以通过所述第二弹性元件242的弹力提供所述第二压电致动器222被夹持地设置于所述防抖可动部21的载体延伸臂212与所述防抖固定部23的基底232之间,即,使得所述第二压电致动器222的第二摩擦驱动部2222抵触与所述防抖可动部21的载体延伸臂212,通过这样的方式,所述第二压电致动器222被摩擦地耦合于所述防抖可动部21。
在本申请一个具体示例中,所述预压力装置24被实施为具有弹性的黏着剂,也就是,所述第一弹性元件241和所述第二弹性元件242被实施为固化后具有弹性的胶水。相应地,在安装过程中,可在所述基底232的内底面和所述第一压电陶瓷板2211以及在所述基底232的内底面和所述第二压电陶瓷板2221之间分别施加一层厚度为10um至50um的黏着剂,以在所述黏着剂固化成型后形成所述第一弹性元件241和所述第二弹性元件242。也就是,所述预压力装置24的第一弹性元件241和所述第二弹性元件242在提供预压力的同时,还能够使得所述防抖驱动部22被固定于所述基底232的内侧壁的 底面。
优选地,所述预压力装置24具有相对较高的平整度,即,在施加所述黏着剂以形成所述第一弹性元件241和所述第二弹性元件242时,尽可能地保证所施加的黏着剂具有相对较高的平整度且均匀度,从而使得所述防抖驱动部22能够平整地被固定于所述基底232,进而提升所述防抖驱动部22的稳定性。当然,在本申请其他示例中,所述预压力装置24的第一弹性元件241和第二弹性元件242也可以被实施为材料特性本身即存在弹性的橡胶,或者是由于形状而具有弹性的弹簧;也可以是具有粘性的弹性材质,例如粘合剂(硅胶、UV胶、热固胶、UV热固胶等)。
应可以理解,在该实施例中,所述预压力装置24被设置于所述基底232,所述预压力装置24产生沿Z轴方向向上的预压力,所述预压力能够保持所述防抖驱动部22的摩擦驱动部224与所述防抖可动部21的摩擦板213保持摩擦接触,并且,所述预压力还能够保持所述导引装置25被夹持于所述上盖231与所述防抖可动部21的载体延伸臂212之间,其中,所述预压力方向与所述驱动力的方向垂直。
如图12至图14所示,为了提高所述摄像模组在光学防抖过程中运动的稳定性,提高成像质量,在所述上盖231与防抖可动部21之间设置导引装置25,以在进行光学防抖时使得所述防抖可动部21相对于所述防抖固定部23移动的过程中始终对所述防抖可动部21形成支撑,使其能够平稳的滑动。也就是,在本申请实施例中,所述防抖驱动组件20进一步包括设置于所述载体延伸臂212的上表面和所述上盖231之间的导引装置25,所述导引装置25适于导引所述防抖可动部21在所述X轴和所述Y轴所设定的所述XOY平面内移动。
在本申请一个具体的示例中,所述导引装置25包括设置于所述防抖可动部21的凹槽241以及设置于所述凹槽241内的滚珠242,其中,如前所述,在所述预压力装置24的作用下,所述导引装置25能够在所述防抖可动部21相对所述防抖固定部23移动的过程中始终与所述防抖可动部21保持接触并导引所述防抖可动部21的移动,以使得所述防抖可动部21能够平稳的移动。应可以理解,由于所述滚珠242置于所述凹槽241内,滚珠242的运动轨迹被限制在所述凹槽241内,滚珠242可以在凹槽241内沿垂直于所述光轴所在的平面内移动,以为所述防抖可动部21的移动提供导向。
具体地,在该具体示例中,所述凹槽241凹陷地形成于所述防抖可动部21的载体延伸臂212,并且所述凹槽241的开口朝向于所述防抖固定部23的上盖231。也就是说,所述上盖231面对所述滚珠242的部分为一平面结构,所述载体延伸臂212面对所述滚珠242的部分为一凹槽241结构,即所述滚珠242本容置于所述载体延伸臂212的凹槽241内,所述滚珠242仅可以在所述凹槽241内移动,并且所述凹槽241对所述滚珠242的移动进行限位,防止所述滚珠242脱离其移动范围。在本申请中,所述滚珠242为陶瓷材质。特别地,在该具体示例中,所述凹槽241的深度小于等于所述滚珠242的直径,以使得所述滚珠242的至少一部分可以裸露于所述凹槽241的顶面,以使得所述滚珠242能够与所述防抖可动部21的载体延伸臂212摩擦接触。
在本申请实施例中,所述导引装置25的数量至少为3,即,所述防抖驱动组件20至少包括3个所述导引装置25。优选地,在本申请实施例中,所述导引装置25的数量为4,其可分别位于所述防抖驱动组件20的四角处,以为所述防抖可动部21提供平稳的支撑,并且可以充分利用所述防抖驱动组 件20空余的角落空间,使得所述防抖驱动组件20的结构更加紧凑。
值得一提的是,在本申请的其他示例中,所述导引装置25也可以为滑块-滑槽结构,本申请对此不做限制。并且,在本申请的其他示例中,也可以在所述上盖231与所述防抖可动部21的上表面之间设置具有方向的轨道,将所述滚珠242设置于所述轨道内,所述滚珠242的运动轨迹被限制在该轨道内,因此能够在感光组件30移动的过程中起到导向的作用。并且,由于滚珠242能够通过滚动摩擦代替滑动摩擦,可以进一步减小所述防抖可动部21与所述上盖231间的摩擦力。
例如,在本申请一个具体的示例中,可在所述上盖231的底面设置一沿x轴方向的轨道,在所述载体延伸臂212的上表面设置一沿y轴方向的轨道(底面和上表面是指沿光轴方向,从感光芯片32到光学镜头10的方向),所述x方向的轨道与y方向的轨道相对设置形成一“十”字形的容纳腔,将滚珠242容纳其中。优选地,所述滚珠242和容纳腔数量为4,以使得所述防抖可动部21能够保持稳定。在进行光学防抖时,通过滚珠242和轨道作为导向机构,可以为感光组件30提供更大的OIS行程。当然,在本申请的其他实施方式中,也可以在所述载体延伸臂212上表面既设置沿x轴方向的轨道也设置沿y轴方向的轨道,并且两个同侧的轨道设置于载体延伸臂212的同一侧。与之相对的,在所述上盖231的下表面设置与所述载体延伸臂212上表面方向不同的轨道,即在所述上盖231上与载体延伸臂212上x轴方向轨道相对的位置设置y轴方向轨道,在所述上盖231上与所述载体延伸臂212y轴方向轨道相对的位置设置x轴方向轨道,以避免出现干涉。
值得一提的是,所述导引装置25设置于所述防抖可动部21与所述上盖231之间,所述防抖驱动部22设置于所述防抖可动部21与所述基底232之间,并且所述导引装置25设置于所述防抖可动部21的上方,所述防抖驱动部22设置于所述防抖可动部21的下方,也就是说所述防抖可动部21由所述导引装置25和所述防抖驱动部22夹持于所述上盖231与基底232形成的容置空间内。
应注意到,在本申请实施例中,所述导引装置25的所述滚珠242被夹持于所述防抖可动部21和所述防抖固定部23的上盖231之间,因此,所述滚珠242也能够提供一个使得所述防抖可动部21向下以使得所述防抖可动部21摩擦地耦接于所述防抖驱动部22的预压力。也就是,在本申请实施例中,所述导引装置25的滚珠242在实质上也发挥着预压力装置24的作用。也就是说所述滚珠242既可以作为导引装置25为所述防抖可动部21提供支撑,也可以作为预压力装置24为所述防抖驱动部22提供需要的预压力。
具体地,在本申请实施例中,所述第一压电陶瓷板2211与所述第二压电陶瓷板2221分别相对平行地固定于所述基底232的内底表面,所述第一摩擦驱动部2212与所述第二摩擦驱动部2222固定于所述第一压电陶瓷板2211与第二压电陶瓷板2221上并朝向所述防抖可动部21,并且与所述防抖可动部21的摩擦板213保持摩擦接触。即沿高度方向上,所述第一压电致动器221与所述第二压电致动器222分别设置于所述防抖可动部21的下方,所述滚珠242设置于所述防抖可动部21与所述上盖231之间,即所述滚珠242设置于所述防抖可动部21的上方。也就是说,所述设置模组沿Z轴方向由上至下的顺序为上盖231、滚珠242、防抖可动部21、第一压电致动器221和第二压电致动器222、基底232,所述防抖可动部21被夹持与所述滚珠242与所述第一压电致动器221和第二压电致动器222之间,所述滚珠242可以产生向下的预压力,通过所述预压力使得所述第一压电致动器221和所述第二 压电致动器222能够保持于所述防抖可动部21的摩擦板213摩擦接触。
在本申请中,所述第一摩擦驱动部2212、第二摩擦驱动部2222分别与所述载体延伸臂212相对的两边摩擦接触,所述滚珠242分别与所述上盖231和载体延伸臂212的四角摩擦接触,所述摩擦驱动部与所述摩擦板213之间的摩擦是主动摩擦,所述滚珠242与所述上盖231之间的摩擦为被动摩擦,所述第一摩擦驱动部2212、第二摩擦驱动部2222与所述载体延伸臂212的摩擦板213之间的摩擦力大于所述滚珠242与所述上盖231之间的摩擦力。也就是,在所述第一压电致动器221与所述第二压电致动器222的驱动下,所述第一摩擦驱动部2212、第二摩擦驱动部2222与所述载体延伸臂212的摩擦板213之间产生一较大的摩擦力,进而驱动所述防抖可动部21发生移动。在所述防抖可动部21的移动下,所述滚珠242与所述上盖231之间产生一较小的摩擦力,以避免对所述防抖可动部21的移动产生阻碍,进而影响防抖效果。
进一步地,如图5至图15所示,在本申请实施例中,所述驱动基板26设置于所述防抖驱动部22与所述基底232之间。具体地,如图5所示,所述基底232的底面设置有一组定位点2321,所述驱动基板26通过所述基底232的定位点2321被固定于所述基底232上。
所述驱动基板26包括一连接端263和至少一导电端。优选地,所述导电端具有分体式结构且所述导电端的数量为2,即,所述至少一导电端包括第一导电端261和第二导电端262。所述第一压电致动器221的所述第一压电陶瓷板2211与所述第二压电致动器222的所述第二压电陶瓷板2221被分别设置并电连接于所述驱动基板26的所述第一导电端261和所述第二导电端262上,以使得所述第一压电致动器221和所述第二压电致动器222通过所述驱动基板26实现电路导通。也就是说,所述第一导电端261与所述第一压电致动器221同侧设置,所述第二导电端262与所述第二压电致动器222同侧设置。所述连接端263设置于所述防抖驱动组件20不设置所述第一压电致动器221与第二压电致动器222的一侧,例如,所述连接端263设置于所述第一导电端261和所述第二导电端262之间,并且所述连接端263电连接所述第一导电端261和所述第二导电端262,并通过所述连接端263将所述第一导电端261和所述第二导电端262与电子设备主板实现电路导通。在本申请中,将所述驱动基板26与所述线路板31分别与所述电子设备主板固定连接并实现电路导通,以减少所述驱动基板26对所述线路板31移动产生的阻力。
当然,在本申请的其他示例中,所述驱动基板26可以设置于所述基底232与所述预压力装置24之间,所述驱动基板26也可以设置于所述预压力装置24与所述防抖驱动部22之间。也就是说,所述驱动基板26可以直接设置于所述基底232上,也可以通过所述预压力装置24间接地设置于所述基底232上。
特别地,在本申请实施例中,所述基底232具有形成于其侧壁的一开槽,所述连接端263通过该开槽伸出,并实现与电子设备主板的电路导通。优选的,所述线路板31与所述连接端263从所述防抖驱动组件20的同一侧面延伸,即所述基底232的开槽与所述防抖可动部21的开口设置为同一侧,以使得所述线路板31与所述连接端263从所述防抖驱动组件20的同一侧电连接于电子设备的主板。所述防抖可动部21设置于所述基底232的上方,所述线路板31设置于所述驱动基板26的上方,所述线路板31与所述驱动基板26的连接端263沿高度方向具有一定间隙,所述间隙可以使得所述线路板31 在移动过程中不会与所述驱动基板26接触,进而影响光学防抖的效果。所述间隙的范围为0.1mm-0.15mm。
当然,在本申请的其他示例中,也可以将所述驱动基板26与所述线路板31从所述防抖驱动组件20的不同侧延伸与电子设备的主板电连接,即所述基底232与所述防抖可动部21侧壁的开口可以设置于不同侧,如相对侧或相邻侧,以使得所述线路板31的移动不会受到影响。
在本申请的其他示例中,也可以将所述防抖驱动部22与所述导引装置25的位置进行调换,即所述防抖驱动部22设置于所述上盖231与所述防抖可动部21之间,所述导引装置25设置于所述基底232与所述防抖可动部21之间。而所述导引装置25设置于所述基底232与所述防抖可动部21之间,所述导引装置25设置于所述载体延伸臂212的下方,并且所述载体延伸臂212上设置有开口朝向所述基底232的凹槽241,所述滚珠242设置于所述凹槽241内,通过所述滚珠242将所述防抖可动部21承载于所述基底232上。所述载体延伸臂212被夹持与所述滚珠242与所述摩擦驱动部之间,使得所述防抖可动部21能够在所述防抖驱动部22的驱动下实现XOY平面防抖和绕Z轴防抖。进一步地,所述驱动基板26设置于所述上盖231与所述压电陶瓷板之间,用于将所述防抖驱动部22实现与电子设备主板的电路导通。
图15图示了根据本申请实施例的所述防抖驱动组件20的一个变形实施例,其中,如图15所示,与上述实施例不同的是,所述第一压电致动器221与所述第二压电致动器222也可以沿Y轴方向相对平行地设置,即所述第一压电致动器221与第二压电致动器222的长度方向为沿Y轴方向,即所述第一压电致动器221与第二压电致动器222的宽度方向为沿Y轴方向。
在本申请的一示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿长度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿Y轴方向移动;在本申请的另一示例中,所述第一压电致动器221产生沿宽度方向的形变,所述第二压电致动器222产生沿宽度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿X轴方向移动;在本申请的另一示例中,所述第一压电致动器221和第二压电致动器222先产生沿长度方向的形变,再产生沿宽度方向的形变,所述防抖可动部21在所述第一压电致动器221与第二压电致动器222的驱动下先沿Y轴方向移动,再沿X轴方向移动,即所述防抖可动部21能够在XOY所在的平面内移动;在本申请的另一示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿长度方向与之相反方向的形变(即+Y方向和-Y方向),所述防抖可动部21在第一压电致动器221与第二压电致动器222的驱动实现绕Z轴旋转运动。也就是说,在本申请中,所述第一压电致动器221与所述第二压电致动器222能够相互配合以驱动所述防抖可动部21在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转,以实现所述感光组件30的平移防抖和/或旋转防抖。
综上,基于本申请实施例的所述摄像模组被阐明,其中,所述摄像模组采用新型的压电致动器作为驱动元件以不仅能够提供足够大的驱动力,而且,能够提供精度更高和行程更长的驱动性能,以满足所述摄像模组的光学性能调整的需求,例如,光学防抖的需求。
示意性防抖驱动组件
根据本申请的另一方面,还提供了一种防抖驱动组件,其包括:防抖固定部23、防抖可动部21和防抖驱动部22,其中,所述防抖可动部21适于安装感光组件30于其上,并且,所述防抖驱动部22包括摩擦地耦接于所述防抖可动部21的第一压电致动器221和第二压电致动器222。特别地,所述第一压电致动器221和所述第二压电致动器222相互平行地布设于该感光组件30的相对的两侧,且所述第一压电致动器221和所述第二压电致动器222适于作动所述防抖可动部21和该感光组件30在X轴和Y轴所设定的XOY平面内移动或绕着垂直于所述X轴和所述Y轴的Z轴在所述XOY平面内旋转。
在根据本申请的防抖驱动组件20中,在一个示例中,所述第一压电致动器221和所述第二压电致动器222相对于该感光组件30以所述X轴或者所述Y轴为对称轴被对称地布置于该感光组件30的相对的两侧。
在根据本申请的防抖驱动组件20中,在一个示例中,所述第一压电致动器221和所述第二压电致动器222为行波式压电致动器,其中,所述第一压电致动器221包括第一压电陶瓷板2211和突出于所述第一压电陶瓷板2211的第一摩擦驱动部2212,所述第一压电陶瓷板2211适于在被电驱动后发生形变以带动所述第一摩擦驱动部2212做单向偏摆往复运动;其中,所述第二压电致动器222包括第二压电陶瓷板2221和突出于所述第二压电陶瓷板2221的第二摩擦驱动部2222,所述第二压电陶瓷板2221适于在被电驱动后发生形变以带动所述第二摩擦驱动部2222做单向偏摆往复运动。
在根据本申请的防抖驱动组件20中,在一个示例中,所述第一压电致动器221适于沿着所述X轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动,且所述第二压电致动器222适于沿着所述X轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动;
其中,所述第一压电致动器221适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动,且所述第二压电致动器222适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动;
其中,所述第一压电致动器221适于沿着所述X轴所设定的第一方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的第一方向进行移动,且所述第二压电致动器222适于沿着所述X轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的第二方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动该感光组件30绕所述Z轴在所述XOY平面内进行旋转;
其中,所述第一压电致动器221适于沿着所述Y轴所设定的第一方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的第一方向进行移动,且所述第二压电致动器222适于沿着所述Y轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的第二方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222 作动该感光组件30绕所述Z轴在所述XOY平面内进行旋转。
在根据本申请的防抖驱动组件20中,在一个示例中,所述第一压电致动器221和所述第二压电致动器222具有长方形结构,其具有沿着长度方向的两条相对的长边和沿着宽度方向的两条相对的短边。
在根据本申请的防抖驱动组件20中,在一个示例中,所述第一压电致动器221和所述第二压电致动器222的长度方向为所述X轴方向,所述第一压电致动器221和所述第二压电致动器222的短边方向为所述Y轴方向。
在根据本申请的防抖驱动组件20中,在一个示例中,所述第一压电致动器221和所述第二压电致动器222的长度方向为所述Y轴方向,所述第一压电致动器221和所述第二压电致动器222的短边方向为所述X轴方向。
在根据本申请的防抖驱动组件20中,在一个示例中,所述防抖可动部21被平稳地支持于所述第一压电致动器221的第一摩擦驱动部2212和所述第二压电致动器222的第二摩擦驱动部2222上。
在根据本申请的防抖驱动组件20中,在一个示例中,所述第一压电陶瓷板2211被设置于所述防抖固定部23,所述第一摩擦驱动部2212摩擦地耦接于所述防抖可动部21、所述第二压电陶瓷板2221被设置于所述防抖固定部23,所述第二摩擦驱动部2222摩擦地耦接于所述防抖可动部21。
在根据本申请的防抖驱动组件20中,在一个示例中,所述第一压电致动器221和所述第二压电致动器222具有相同的高度尺寸
在根据本申请的防抖驱动组件20中,在一个示例中,所述第一压电致动器221和所述第二压电致动器222的高度尺寸为0.7mm-0.9mm。
在根据本申请的防抖驱动组件20中,在一个示例中,所述防抖固定部23具有收容腔,所述防抖可动部21被悬持于所述防抖固定部23的收容腔内。
在根据本申请的防抖驱动组件20中,在一个示例中,所述防抖固定部23包括基底232和与所述基底232相扣合的上盖231,所述收容腔形成于所述上盖231和所述基底232之间。
在根据本申请的防抖驱动组件20中,在一个示例中,所述防抖可动部21与所述基底232之间具有间隙,所述防抖可动部21与所述上盖231之间具有间隙,通过这样的方式,所述防抖可动部21被悬持于所述防抖固定部23的收容腔内。
在根据本申请的防抖驱动组件20中,在一个示例中,所述防抖可动部21包括载体主体211和自所述载体主体211向外延伸的载体延伸臂212,其中,所述第一压电致动器221的第一摩擦驱动部2212和所述第二压电致动器222的第二摩擦驱动部2222摩擦地耦接于所述载体延伸臂212的下表面。
在根据本申请的防抖驱动组件20中,在一个示例中,所述载体主体211具有低于所述载体延伸臂212的安置槽,其中,该感光组件30适于安装于所述安置槽内。
在根据本申请的防抖驱动组件20中,在一个示例中,所述载体延伸臂212与所述基底232之间具有容置空间,所述第一压电致动器221和所述第二压电致动器222被收容于所述容置空间内。
在根据本申请的防抖驱动组件20中,在一个示例中,所述防抖可动部21进一步包括形成于所述 载体延伸臂212的下表面的摩擦板213,所述第一压电致动器221的第一摩擦驱动部2212和所述第二压电致动器222的第二摩擦驱动部2222摩擦地耦接于所述摩擦板213。
在根据本申请的防抖驱动组件20中,在一个示例中,所述防抖驱动组件20进一步包括设置于所述防抖可动部21和所述基底232之间的驱动基板26,所述驱动基板26包括至少一导电端和自所述导电端往外延伸的连接端263,所述第一压电致动器221和所述第二压电致动器222电连接于所述至少一电连接端263。
在根据本申请的防抖驱动组件20中,在一个示例中,所述至少一导电端包括第一导电端261和第二导电端262,所述第一压电致动器221电连接于所述第一导电端261,所述第二压电致动器222电连接于所述第二导电端262。
在根据本申请的防抖驱动组件20中,在一个示例中,所述防抖可动部21具有形成于所述载体主体211的侧壁的开槽,所述开槽被配置为允许该感光组件30的线路板31自所述开槽伸出所述安置槽。
在根据本申请的防抖驱动组件20中,在一个示例中,所述基底232具有形成于其侧壁的开口,其中,所述连接端263自所述至少一导电端往外延伸并穿过所述开口。
在根据本申请的防抖驱动组件20中,在一个示例中,所述开口和所述开槽具有高度差。
在根据本申请的防抖驱动组件20中,在一个示例中,所述防抖驱动组件20进一步包括设置于所述防抖驱动部22和所述防抖固定部23之间的预压力装置24,以通过所述预压力装置24所提供的预压力迫使所述防抖驱动部22摩擦地耦接于所述防抖可动部21。
在根据本申请的防抖驱动组件20中,在一个示例中,所述预压力装置24包括设置于所述基底232和所述第一压电致动器221的第一压电陶瓷板2211之间的第一弹性元件241,以通过所述第一弹性元件241自身的弹力产生所述预压力以迫使所述第一压电致动器221的第一摩擦驱动部2212抵触于所述摩擦板213,通过这样的方式使得所述第一压电致动器221的第一摩擦驱动部2212摩擦地耦接于所述摩擦板213;所述预压力装置24还包括设置于所述基底232和所述第二压电致动器222的第二压电陶瓷板2221之间的第二弹性元件242,以通过所述第二弹性元件242自身的弹力产生的所述预压力迫使所述第二压电致动器222的第二摩擦驱动部2222抵触于所述摩擦板213,通过这样的方式使得所述第二压电致动器222的第二摩擦驱动部2222摩擦地耦接于所述摩擦板213。
在根据本申请的防抖驱动组件20中,在一个示例中,所述第一弹性元件241和所述第二弹性元件242的厚度尺寸为10um至50um。
在根据本申请的防抖驱动组件20中,在一个示例中,所述防抖驱动组件20进一步包括设置于所述载体延伸臂212的上表面和所述上盖231之间的导引装置25,所述导引装置25适于导引所述防抖可动部21在所述X轴和所述Y轴所设定的所述XOY平面内移动。
综上,基于本申请实施例的防抖驱动组件20被阐明,其采用特殊的压电致动器作为驱动元件并仅配置一个防抖可动部21便可实现所述摄像模组在XOY平面内的防抖。
示例性摄像模组
如图21至图36所示,根据本申请实施例的摄像模组被阐明,其包括感光组件30,被保持于所述 感光组件30的感光路径上的光学镜头10以及用于驱动所述感光组件30进行移动以实现所述摄像模组的光学性能调整的防抖驱动组件20。
在本申请实施例中,所述感光组件30被安装于所述防抖驱动组件20内,例如,如图21至图36所示,所述防抖驱动组件20具有位于其中间区域的安置槽2110,所述感光组件30以被收容于所述安置槽2110的方式安装于所述防抖驱动组件20内,这样,当所述防抖驱动组件20被驱动时其能承载着所述感光组件30沿着预设方向进行移动以实现所述摄像模组的光学性能的调整,例如,进行光学防抖等。并且,所述光学镜头10被保持预所述感光组件30的感光路径上,例如,所述光学镜头10以被固定于所述防抖驱动组件20的顶面的方式被安装于所述防抖驱动组件20上通过这样的方式使得所述光学镜头10被保持于所述感光组件30的感光路径上,这样所述感光组件30可以接收从所述光学镜头10投射出的光线以进行成像。
更具体地,如图21至图23所示,所述光学镜头10包括镜筒11和被安装于所述镜筒11内的镜片组,其中,所述镜片组包括至少一光学镜片12,且所述至少一光学镜片12的数量并不受限。
在本申请一个具体的示例中,所述光学镜头10以直接安置于所述防抖驱动组件20的顶面的方式被固定地设置于所述感光组件30的感光路径上。在本申请的另一示例中,所述光学镜头10可通过一镜座13被安置于所述防抖驱动组件20的顶面上,其中,所述镜座13具有形成于其中间的一通孔,被所述光学镜头10折射的光线能够通过该通孔入射至所述感光组件30。
在本申请的又一示例中,所述光学镜头10可通过一镜头驱动部分14被安置于所述防抖驱动组件20的顶面上,其中,所述镜头驱动部分14具有形成于其中的安置空间,所述光学镜头10被安装于所述镜头驱动部分14的安置空间内,并且所述镜头驱动部分14能够驱动所述光学镜头10移动,以实现光学对焦和/或光学防抖功能。在该示例中,所述镜头驱动部分14可以是音圈镜头驱动部分14、压电镜头驱动部分14、SMA(形状记忆合金,Shape Memory Alloy)镜头驱动部分14等类型的驱动镜头驱动部分14。进一步的,在本申请的一示例中,所述镜座13或所述镜头驱动部分14可以直接容纳所述光学镜头10的多个光学镜片12;在本申请的另一示例中,所述镜座13或镜头驱动部分14可以容纳所述光学镜头10的所述镜筒11和设置于所述镜筒11中的多个光学镜片12。
值得一提的是,在该具体示例的一些示例中,所述镜头驱动部分14还包括镜头对焦部,所述镜头对焦部适于驱动所述光学镜头10在Z轴方向平移,以调整所述光学镜头10相对所述感光组件30的距离,实现所述光学镜头10的对焦功能。并且,在该具体示例的一些实施例中,所述镜头驱动部分14还可以包括镜头防抖部,所述镜头防抖部适于驱动所述光学镜头10在X轴和Y轴方向上平移和/或绕Z轴方向旋转,以实现所述光学镜头10的平移防抖和/或旋转防抖;或者,所述镜头防抖部适于驱动所述光学镜头10在绕X轴方向和绕Y方向旋转,以实现所述光学镜头10的倾斜防抖。需指出的是,所述镜头驱动部分14可以仅包含所述镜头对焦部或者所述镜头防抖部;所述镜头驱动部分14还可以同时包括所述镜头对焦部和所述镜头防抖部,从而所述镜头驱动部分14不仅可以实现镜头对焦功能还可以实现镜头防抖功能。
如图24所示,在本申请实施例中,所述感光组件30包括线路板31、感光芯片32、电子元件33、底座34和滤光元件35。所述感光芯片32被设置于所述线路板31且电连接于所述线路板31,例 如,所述感光芯片32被贴装于所述线路板31并电连接于所述线路板31,其中,所述底座34被设置于所述线路板31上且位于所述感光芯片32的周侧,所述滤光元件35以被安装于所述底座34的方式被保持于所述感光芯片32的感光路径上。所述感光芯片32包括感光区和围绕于所述感光区的非感光区,其中,所述感光区由像素阵列组成,用于接收并感应来自外界的成像光线并将光信号转化为电信号。
在本申请的一个示例中,所述感光芯片32通过黏着剂被安装于所述线路板31的上表面,并通过打金线的方式电连接于所述线路板31。当然,在本申请其他示例中,所述感光芯片32还能以其他方式被设置于所述线路板31和/或其他方式电连接于所述线路板31,例如,以芯片倒装的方式贴附于所述线路板31的下表面,对此,并不为本申请所局限。应可以理解,在本申请实施例中,所述感光芯片32的感光路径形成所述感光组件30的感光路径。
所述底座34被设置于所述线路板31上以封装位于所述线路板31上的电子元件33且用于支撑其他部件。在本申请一个具体的示例中,所述基座被实施为单独成型的塑料支架,其通过黏着剂附着于所述线路板31的表面,并用于支撑其他部件。当然,在本申请其他示例中,所述基座还能以其他方式形成于所述线路板31,例如,所述基座被实施为模塑基座,其通过模塑工艺一体成型于所述线路板31的预设位置,对此,并不为本申请所局限。
在本申请实施例中,所述滤光元件35被保持于所述感光芯片32的感光路径上,用于对进入所述感光芯片32的成像光线进行过滤。在一个具体的示例中,所述滤光元件35被安装于所述底座34上且对应于所述感光芯片32的至少感光区域,通过这样的方式,所述滤光元件35被保持于所述感光芯片32的感光路径上。
值得一提的是,在本申请其他示例中,所述滤光元件35还能够以其他方式被安装于所述底座34上,例如,先在所述底座34上设置滤光元件支架,进而将所述滤光元件35安装在所述滤光元件支架上,也就是,在该示例中,所述滤光元件35可通过其他支撑件被间接地安装于所述底座34上。并且,在本申请的其他示例中,所述滤光元件35还能够被安装于所述可变焦摄像模组的其他位置,例如,所述滤光元件35形成于所述光学镜头10内(例如,作为一层滤光膜附着于所述变焦镜头组的某片光学透镜的表面),对此,并不为本申请所局限。
如前所述,为了满足越来越广泛的市场需求,高像素、大芯片、小尺寸是现有摄像模组不可逆转的发展趋势。随着感光芯片32朝着高像素和大芯片的方向发展,与感光芯片32适配的光学部件(例如,滤光元件35、光学镜头10)的尺寸也逐渐增大,这给用于驱动光学部件以进行光学性能调整(例如,光学对焦、光学防抖等)的驱动元件带来的新的挑战。
具体地,现有的用于驱动光学部件的驱动元件为电磁式马达,例如,音圈马达(Voice Coil Motor:VCM)、形状记忆合金驱动器(Shape of Memory Alloy Actuator:SMA)等。然而,随着光学部件尺寸增加而导致的重量增加,现有的电磁式马达已逐渐无法提供足够的驱动力来驱动光学部件移动。量化来看,现有的音圈马达和形状记忆合金驱动器仅适于驱动重量小于100mg的光学部件,也就是,如果光学部件的重量超过100mg,现有的驱动器将无法满足摄像模组的应用需求。
此外,随着移动终端设备朝着小型化和薄型化的方向发展,驱动元件内部的部件布设密度也随之 提高。相应地,现有的音圈马达内部设有线圈和磁铁,当两个磁铁距离过近(小于7mm),其内部磁场会产生相互影响,导致磁铁产生位移或抖动,降低其驱动控制的稳定性。
因此,需要一种适配的用于摄像模组的新型驱动方案,且,新型的驱动器不仅能满足摄像模组对于光学性能调整的驱动要求,且能够满足摄像模组轻型化和薄型化的发展需求。
经研究和试验,本申请提出了一种新型的驱动器,不仅相对具有更大的驱动力和更优的驱动性能(具体地包括:更高精度的驱动控制和更长的驱动行程),还能够适应于当下摄像模组轻型化和薄型化的发展趋势。
特别地,该种新型的驱动器为一种具有新型结构的压电致动器,该压电致动器能够满足所述摄像模组对于驱动器的技术要求。并且,进一步地采用合适的布置方式将所述压电致动器布置于所述摄像模组内以形成用于驱动所述感光组件30进行位置调整的防抖驱动组件20,以使得其满足所述摄像模组的结构设计要求和尺寸设计要求。
如图25至图36所示,在本申请实施例中,所述防抖驱动组件20包括防抖可动部21、防抖驱动部22、防抖固定部23、预压力装置24、导引装置25及驱动基板26,其中,所述防抖可动部21适于安装所述感光组件30于其上,所述防抖可动部21相对于所述防抖固定部23可移动,所述防抖驱动部22被设置于所述防抖固定部23和所述防抖可动部21之间且所述防抖驱动部22摩擦地耦接于所述防抖可动部21,以通过所述防抖驱动部22提供的摩擦驱动力驱动所述防抖可动部21相对于所述防抖固定部23进行移动,通过这样的方式,来驱动所述感光组件30进行移动从而实现所述摄像模组的光学性能的调整。
相应地,在本申请实施例中,所述感光组件30可联动地安装于所述防抖可动部21,例如,在本申请一个具体的示例中,所述感光组件30被固定地安装于所述防抖可动部21上,从而当所述防抖驱动部22驱动所述防抖可动部21时,所述感光组件30也被所述防抖可动部21所带动。所述防抖驱动部22被设置于所述防抖固定部23和所述防抖可动部21之间,例如,在本申请一个具体的示例中,所述防抖驱动部22以分别连接所述防抖可动部21和所述防抖固定部23的方式被设置于所述防抖固定部23和所述可动部之间。所述防抖驱动部22适于驱动所述感光组件30在X轴方向(即,X轴所设定的方向)和Y轴方向(即,Y轴所设定的方向)上平移和/或绕Z轴方向(即,Z轴所设定的方向)旋转,以实现所述感光组件30的平移防抖和/或旋转防抖,也就是,所述防抖驱动部22适于作动所述防抖可动部21在X轴和Y轴所设定的XOY平面内移动或绕着垂直于所述X轴和所述Y轴的Z轴在所述XOY平面内旋转。
值得一提的是,在本申请实施例中,所述X轴方向和所述Y轴方向相互垂直,所述Z轴方向垂直于所述X轴方向和所述Y轴方向所在平面,换言之,X轴、Y轴和Z轴构成了三维立体坐标系。
具体地,在本申请实施例中,所述防抖固定部23具有收容腔230,其中,所述防抖可动部21、所述防抖驱动部22、所述导引装置25、所述预压力装置24和所述驱动基板26被收容于所述防抖固定部23的收容腔230内,也就是说,所述防抖固定部23可以将所述防抖可动部21、所述防抖驱动部22、所述导引装置25、所述预压力装置24和所述驱动基板26容置于其中。更具体地,在本申请实施例中,所述防抖可动部21被悬持地设置于所述防抖固定部23的收容腔230内以将所述收容腔230分成 两个部分(这里,为了便于说明,将所述收容腔230的两个部分定义为:上部2301和下部2302),其中,所述预压力装置24、所述驱动基板26和所述防抖驱动部22被设置于所述收容腔230的一个部分,而所述预压力装置24则被设置于所述收容腔230的另一个部分。
并且,在本申请实施例中,在所述收容腔230的一个部分中,所述驱动基板26与所述防抖驱动部22电连接,用于实现所述防抖驱动组件20的电路导通,所述预压力装置24通过其所产生的预压力保持所述防抖驱动部22与所述防抖可动部21之间摩擦地耦接。在所述收容腔230的另外一个部分中,所述导引装置25用于导引所述防抖可动部21的移动。
更具体地,在本申请实施例中,所述防抖可动部21为一动子,其能够在所述防抖驱动部22的驱动下在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转,以实现所述感光组件30的平移防抖和/或旋转防抖功能。本申请中,由于所述防抖驱动部22采用特殊的驱动器作为驱动元件,所述防抖可动部21的数量为一,即仅需一个所述防抖可动部21可在所述防抖驱动部22的驱动下实现在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转的运动。
本领域普通技术人员应知晓,在传统的压电马达的驱动方案中,需要配置两个可动部(即,配置两个可动载体)方能实现在X轴方向和Y轴方向上的平移运动,即一个可动载体在X方向压电马达的驱动下实现X轴方向的移动,另一个可动载体在Y方向压电马达的驱动下实现Y轴方向的移动。相对于传统的压电马达方案,本申请仅需要通过一个防抖可动部21(即,仅需要一个可动载体)就可以实现在X轴方向和Y轴方向上的平移运动。相应地,通过减少所述防抖可动部21的数量以降低所述防抖驱动组件20的高度,进而减少摄像模组的高度,且由于所述防抖可动部21的数量的减小,所述防抖驱动组件20的内部元件的布置会显得更为紧凑,以利于缩减所述防抖驱动组件20的长宽尺寸。
如图25和图26所示,在本申请实施例中,所述防抖可动部21包括载体主体211、载体延伸臂212以及摩擦板213。所述载体主体211形成用于安装所述感光组件30于其内的所述安置槽2110,其中,所述感光组件30被固定于所述安置槽2110内以使得所述感光组件30能够在所述芯片防抖可动部21的带动下进行移动。
优选地,在本申请实施例中,所述载体主体211具有形成其侧壁的一开槽,以使得所述感光组件30的线路板31能够通过该开槽伸出并延伸至所述电子设备的主板。也就是,在本申请实施例中,所述载体主体211具有形成于其侧部的门,以通过所述门允许所述感光组件30的线路板31穿过并伸出所述防抖驱动组件20。
如图25和图26所示,在本申请实施例中,所述载体延伸臂212自所述载体主体211向外延伸,例如,所述载体延伸臂212一体地自所述载体主体211向外延伸。特别地,在本申请实施例中,所述载体延伸臂212与所述载体主体211的底面之间具有一定的高度差,也就是说,所述载体延伸臂212与所述载体主体211不在同一高度延伸。更明确地,在本申请实施例中,所述载体延伸臂212的高度高于所述载体主体211的高度,所述载体延伸臂212自所述载体主体211向上并向外延伸。这里,本申请中所指的“向上”表示指由像侧到物侧,“向外”表示远离光轴的方向。其中,具有高度差的所述载体延伸臂212与所述载体主体211与所述防抖固定部23相配合形成一沿Z轴方向的容置空间,所述 容置空间可以用于安置所述防抖驱动部22,以使得所述摄像模组的结构更加紧凑。
如图25和图26所示,在本申请实施例中,所述摩擦板213设置于所述载体延伸臂212,例如,所述摩擦板213一体地形成于所述载体延伸臂212,当然所述摩擦板213与所述载体延伸臂212也可以为分体时结构,例如,所述摩擦板213为独立的部件,其通过黏着剂附着于所述载体延伸臂212。优选地,所述摩擦板213被设置于所述载体延伸臂212的朝向于所述防抖驱动部22的一侧,即,被设置于所述载体延伸臂212的下表面。相应地,在本申请实施例中,所述摩擦板213被夹持地设置于所述防抖可动部21与所述防抖驱动部22之间,以通过所述防抖驱动部22和所述预压力装置24使得所述防抖可动部21被摩擦地耦合于所述载体延伸臂212。应可以理解,所述摩擦板213的作用在于提高所述防抖驱动部22和所述防抖可动部21之间的摩擦力。
并且,如图25和图26所示,在本申请实施例中,所述载体延伸臂212具有分别形成于相对的两边的两个U型槽,其中,在所述防抖可动部21的安装过程中,可以通过该U型槽对所述防抖可动部21进行夹持,便于安装。
如图25至图27所示,在本申请一个具体的示例中,所述防抖固定部23包括相互扣合的上盖231和基底232,其中,所述上盖231与所述基底232之间形成一收容腔230,所述收容腔230用于将收容所述防抖可动部21、防抖驱动部22、预压力装置24、导引装置25及驱动基板26于其中,通过这样的方式,不仅可以保护所述防抖驱动组件20中的各个元件发生撞击损坏,也可以用于避免灰尘、脏污或杂散光进入所述防抖驱动组件20的内部。
更具体地,在该具体示例中,所述上盖231被套设于所述基底232的上方,并且所述上盖231具有与所述感光组件30相对应的开口,以使得经过物体反射的光线能够到达所述感光组件30。所述上盖231和基底232的材质可以为金属,例如冷轧碳素薄钢板(SPCC)或者不锈钢等导磁材料,不仅起到一定的导磁作用(即,加强磁场),而且能够有助于所述感光组件30的散热。应可以理解,在该具体示例中,所述上盖231与基底232均为定子,即在实现所述感光组件30的光学防抖功能时,所述上盖231与基底232保持不动,其中,所述光学镜头10固定设置于所述上盖231,并位于所述感光组件30的感光路径上。
当所述上盖231与基底232均为金属材质时,所述上盖231与基底232的四角处需设置有缺口,与所述缺口相邻的边可以进行弯折,以使得所述上盖231一基底232能够嵌套固定。由于在本申请中,所述感光组件30设置于所述防抖可动部21的安置槽2110内,因此即使通过所述防抖固定部23的缺口进入的灰尘也并不会进入到所述感光组件30,进而不会对成像效果造成影响。
也就是说,在本申请实施例中,所述防抖固定部23具有收容腔230,所述防抖可动部21被悬持于所述防抖固定部23的收容腔230内。应注意到,在本申请实施例中,所述防抖可动部21与所述基底232之间具有间隙,所述防抖可动部21与所述上盖231之间具有间隙,通过这样的方式,所述防抖可动部21被悬持于所述防抖固定部23的收容腔230内。
应可以理解,所述防抖可动部21悬架于所述收容腔230内,以通过所述防抖可动部21将所述收容腔230分成上部2301和下部2302,其中,所述上部2301形成于所述上盖231和所述防抖可动部21之间,而所述下部2302则形成于所述防抖可动部21和所述基底232之间。也就是说,在本申请实施 例中,所述上盖231的底面与所述防抖可动部21的载体延伸臂212的顶面之间具有一间隙,所述间隙可以用于容置所述导引装置25,以通过所述导引装置25使得所述防抖可动部21支撑与所述防抖固定部23的上盖231;且所述基底232的底面与所述防抖可动部21的底面之间也具有一间隙,所述间隙可以用于容置所述防抖驱动部22、所述驱动基板26和所述预压力装置24。
进一步地,如图28至图34所示,在本申请实施例中,所述防抖驱动部22设置于所述防抖可动部21与所述防抖固定部23之间,优选地,所述防抖驱动部22设置于所述防抖可动部21的载体延伸臂212与所述防抖固定部23的基底232之间,即,所述防抖驱动部22被设置于所述收容腔230的下部2302。所述防抖驱动部22在被安装于所述防抖固定部23后,其与所述防抖可动部21摩擦接触,以通过所述防抖驱动部22驱动所述防抖可动部21在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转。应注意到,在本申请实施例中,所述防抖驱动部22被设置于所述防抖可动部21的载体主体211的侧部,即,所述防抖驱动部22被设置于所述载体延伸臂212和所述基底232所形成的容置空间内,以避免增加所述防抖驱动组件20的高度。
更具体地,在本申请实施例中,所述防抖驱动部22包括第一压电致动器221和第二压电致动器222,所述第一压电致动器221与第二压电致动器222被分别设置于所述防抖驱动组件20的相对的两侧。优选地,在本申请实施例中,所述第一压电致动器221和所述第二压电致动器222相互平行地布设于该感光组件30的相对的两侧,且所述第一压电致动器221和所述第二压电致动器222适于作动所述防抖可动部21和该感光组件30在X轴和Y轴所设定的XOY平面内移动或绕着垂直于所述X轴和所述Y轴的Z轴在所述XOY平面内旋转。
所述第一压电致动器221与所述第二压电致动器222具有相同的高度,以使得所述防抖可动部21设置于所述防抖驱动部22上不会产生倾斜,也就是,所述防抖可动部21被平稳地支持于所述第一压电致动器221和所述第二压电致动器222上。应可以理解,在本申请一些示例中,所述第一压电致动器221和所述第二压电致动器222的高度尺寸也不可不相等,但优选地,所述第一压电致动器221和所述第二压电致动器222所形成的安装面始终为平整表面,这样,所述防抖可动部21能被平稳地支持于所述第一压电致动器221和所述第二压电致动器222所形成的安装面上。
更具体地,在本申请实施例中,所述第一压电致动器221与所述第二压电致动器222沿X轴方向或Y轴方向相对平行设置,即,所述第一压电致动器221和所述第二压电致动器222相对于该感光组件30以所述X轴或者所述Y轴为对称轴被对称地布置于该感光组件30的相对的两侧。
进一步地,在本本申请实施例中,所述载体延伸臂212自所述载体主体211向外延伸,因此所述载体延伸臂212与所述基底232之间形成一容置空间,所述第一压电致动器221与所述第二压电致动器222分别被设置该容置空间内,并且所述第一压电致动器221和第二压电致动器222固定于所述基底232,并沿高度方向摩擦地耦接于设置于所述载体延伸臂212的下表面的所述摩擦板213。
在本申请实施例中,所述第一压电致动器221与所述第二压电致动器222被实施为同一种压电致动器。具体地,在本申请实施例中,所述压电致动器为行波式压电致动器,所述行波式压电致动器具有纳米级的步级精度,能够达到更极致的光学系统要求。并且,所述压电致动器推力较一般VCM马达(Voice coil Motor,音圈马达)推力大10倍,相对于一般VCM马达,所述压电致动器并不需要使 用线圈磁铁等部件,避免了电磁干扰,降低可靠性风险。并且本申请中使用的压电致动器的移动分辨率为1nm,可达成超分0.5um高精度要求。所述压电致动器为一长方体结构,即在XOY平面上,所述压电致动器的截面为一长方形结构,包括沿长度方向的两条长边和沿宽度方向的两条短边。由于所述压电致动器本身的结构,所述压电致动器被相对平行地设置于感光组件30的两侧,即所述第一压电致动器221与所述第二压电致动器222以X轴或Y轴为对称轴相对平行地设置于所述防抖固定部23上。通过这种设置方式可以使得所述第一压电致动器221和所述第二压电致动器222保持更好的一致性,从而所述感光组件30在被驱动时能够保持平稳的移动。
如图29所示,所述压电致动器包括压电陶瓷板223和摩擦驱动部224,在给所述压电致动器提供电源激励后,所述压电致动器的压电陶瓷板223生行波状态的两种面型变化,从而带动所述摩擦驱动部224产生沿X轴方向和/或Y轴方向的单向偏摆往复运动,由于所述摩擦驱动部224与摩擦板213之间的摩擦接触,进而带动所述摩擦板213移动。
具体地,当所述压电致动器被一种电源激励后,所述压电陶瓷板223会产生沿其长度方向波浪形运动形态,所述摩擦部在压电陶瓷片带动下沿其长度方向发生偏摆运动,从而带动所述摩擦板213沿所述压电致动器的长度方向移动;当所述压电致动器被另一种电源激励后,所述压电陶瓷板223会产生沿其宽度方向蛇形运动形态,所述摩擦部在带动下沿其宽度方向发生偏摆运动,从而带动所述摩擦板213沿所述压电致动器的宽度方向移动。
在本申请的一示例中,所述压电致动器可以分别实现沿其长度方向或宽度方向的面型变化,也就是,所述压电致动器可以同时实现沿其长度方向和宽度方向的面型变化。当所述压电致动器沿X轴方向设置,其长度方向为沿X轴方向,宽度方向为沿Y轴方向;当所述压电致动器沿Y轴方向设置,其长度方向为沿Y轴方向,宽度方向为沿X轴方向。相对于现有的压电马达仅能实现一个方向的驱动,本申请中的压电致动器可以产生不同的波形以进行X、Y方向运动,并且利用第一压电致动器221与第二压电致动器222的配合还能达成Z轴旋转运动。并且,本申请的所述压电致动器的高度为0.7mm~0.9mm,可隐藏于所述防抖驱动组件20中以降低所述防抖驱动组件20的高度。
因此,在所述压电致动器的驱动下,仅需要一个所述防抖可动部21就能够实现在XOY平面内的移动,从而带动所述感光组件30实现平移防抖和/或旋转防抖功能,相对于现有的压电马达减少了所述防抖可动部21的数量,不仅简化了所述摄像模组的结构,并且有利于减小摄像模组的高度。
相应地,所述第一压电致动器221包括第一压电陶瓷板2211和第一摩擦驱动部2212。所述第一压电陶瓷板2211由非常小的压电陶瓷组成,在给所述第一压电陶瓷板2211提供电源激励后,通过所述第一压电陶瓷板2211的逆压电效应,所述第一压电陶瓷板2211适于发生形变,从而所述第一压电陶瓷板2211上的第一摩擦驱动部2212随之运动。在本申请中,所述第一压电陶瓷板2211固定的设置于所述基底232,并且所述第一摩擦驱动部2212朝向所述防抖可动部21上的摩擦板213,并且所述第一摩擦驱动部2212与所述摩擦板213之间保持摩擦接触,以使得所述第一摩擦驱动部2212能够驱动所述摩擦板213发生移动。
具体的,在本申请的一示例中,所述第一摩擦驱动部2212位于所述摩擦板213的下方并与所述摩擦板213摩擦接触。优选地,在初始状态下,所述第一摩擦驱动部2212位于所述摩擦板213的中部位 置,所述摩擦板213可以在所述防抖驱动部22的驱动下在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转移动。应可以理解,在本申请其他示例中,在初始状态下,所述第一摩擦驱动部2212也可以位于所述摩擦板213的其他位置,例如,位于所述摩擦板213的端部,对此,并不为本申请所局限。并且,更优选地,所述摩擦板213的面积大于所述第一压电致动器221的驱动行程。
相应地,所述第二压电致动器222包括第二压电陶瓷板2221和第二摩擦驱动部2222。所述第二压电陶瓷板2221由非常小的压电陶瓷组成,在给所述第二压电陶瓷板2221提供电源激励后,通过所述第二压电陶瓷板2221的逆压电效应,所述第二压电陶瓷板2221适于发生形变,从而所述第二压电陶瓷板2221上的第二摩擦驱动部2222随之运动。在本申请中,所述第二压电陶瓷板2221被固定地设置于所述基底232,并且所述第二摩擦驱动部2222朝向所述防抖可动部21上的摩擦板213,并且所述第二摩擦驱动部2222与所述摩擦板213之间保持摩擦接触,以使得所述第二摩擦驱动部2222能够驱动所述摩擦板213发生移动。
具体的,在本申请的一示例中,所述第二摩擦驱动部2222位于所述摩擦板213的下方,并与所述摩擦板213摩擦接触。优选地,在初始状态下,所述第二摩擦驱动部2222位于所述摩擦板213的中部位置,所述摩擦板213可以在所述防抖驱动部22的驱动下在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转移动。当然,在本申请其他示例中,在初始状态下,所述第二摩擦驱动部2222也可以位于所述摩擦板213的其他位置,例如,位于所述摩擦板213的端部,对此,并不为本申请所局限。更优选地,所述摩擦板213的面积大于所述第一压电致动器221的驱动行程。
进一步地,在本申请一个具体的示例中,所述第一压电致动器221与所述第二压电致动器222沿X轴方向相对平行地设置,即所述第一压电致动器221和第二压电致动器222的长度方向为沿X轴方向,所述第一压电致动器221和第二压电致动器222的宽度方向为沿Y轴方向。相应地,在该具体示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿长度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿X轴方向移动。当然,在该具体示例中,所述第一压电致动器221产生沿宽度方向的形变,所述第二压电致动器222产生沿宽度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿Y轴方向移动。
并且,在该具体示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿长度方向与之相反方向的形变(即+X方向和-X方向),所述防抖可动部21在第一压电致动器221与第二压电致动器222的驱动实现绕Z轴旋转运动。也就是说,在本申请中,所述第一压电致动器221与所述第二压电致动器222能够相互配合以驱动所述防抖可动部21在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转,以实现所述感光组件30的平移防抖和/或旋转防抖。
应可以理解,由于所述第一压电致动器221和所述第二压电致动器222既可以产生沿长度方向的形变,又可以产生沿宽度方向的形变,因此仅一个所述防抖可动部21即可在所述第一压电致动器221和所述第二压电致动器222的驱动下实现XOY平面的平移防抖和绕Z轴方向的旋转防抖。
具体地,在本申请的一示例中,所述第一压电致动器221和第二压电致动器222先产生沿长度方向的形变再产生沿宽度方向的形变,所述防抖可动部21在所述第一压电致动器221与第二压电致动器 222的驱动下先沿所述X轴方向移动,再沿所述Y轴方向移动,通过这样的方式使得所述防抖可动部21能够在XOY所在的平面内进行移动。特别地,在本申请实施例中,虽然所述第一压电致动器221和所述第二压电致动器222能够产生宽度或长度方向的形变以提供两个方向的驱动力,但所述第一压电致动器221和所述第二压电致动器222所提供的驱动力仅限于长度方向和宽度方向,即,仅限于X轴方向和Y轴方向,因此,当需要驱动所述感光组件30沿着某个倾斜方向行进以进行光学防抖时,其必须先沿着所述X轴方向移动,而后在沿着所述Y轴方向移动(当然,也可以先沿着所述Y轴方向移动,而后沿着所述X轴方向移动)而不能直接沿着该倾斜方向进行移动,这也是其与传统的通过VCM马达来进行防抖的重要区别。
进一步的,所述第一压电致动器221产生沿所述X轴方向的第一方向(例如,X轴方向的正方向)的形变,所述第二压电致动器222产生沿所述X轴方向的第二方向(例如,X轴方向的负方向)的形变,即所述第一摩擦驱动部2212产生沿所述X轴方向的正方向的驱动力,所述第二摩擦驱动部2222产生沿所述X轴方向的负方向的驱动力,这样,所述防抖可动部21和所述感光组件30在第一压电致动器221与第二压电致动器222的驱动实现绕Z轴方向的旋转运动。
在本申请的另一示例中,所述第一压电致动器221和第二压电致动器222先产生沿宽度方向的形变,再产生沿长度方向的形变,所述防抖可动部21在所述第一压电致动器221与第二压电致动器222的驱动下先沿所述Y轴方向移动,再沿所述X轴方向进行移动,使得所述防抖可动部21能够在XOY所在的平面内进行移动。所述第一压电致动器221产生沿所述X轴方向的第一方向(例如,X轴方向的正方向)的形变,所述第二压电致动器222产生沿所述X轴方向的第二方向(例如,X轴方向的负方向)的形变,即所述第一摩擦驱动部2212产生沿所述X轴方向的正方向的驱动力,所述第二摩擦驱动部2222产生沿所述X轴方向的负方向的驱动力,这样,所述防抖可动部21和所述感光组件30在第一压电致动器221与第二压电致动器222的驱动实现绕Z轴方向的旋转运动。
也就是,在本申请实施例中,所述第一压电致动器221适于沿着所述X轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动,且所述第二压电致动器222适于沿着所述X轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动。并且,所述第一压电致动器221适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动,且所述第二压电致动器222适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动。并且,所述第一压电致动器221适于沿着所述X轴所设定的第一方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的第一方向进行移动,且所述第二压电致动器222适于沿着所述X轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的第二方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动该感光组件30绕所述Z轴在所述XOY平面内进行旋转。还有,所述第一压电致动器221适于沿着所 述Y轴所设定的第一方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的第一方向进行移动,且所述第二压电致动器222适于沿着所述Y轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的第二方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动该感光组件30绕所述Z轴在所述XOY平面内进行旋转。
综上所述,在本申请中,所述防抖可动部21既可以先实现XOY平面的平移防抖,再实现绕Z轴方向的旋转防抖;也可以先现实绕Z轴方向的旋转防抖,再实现XOY平面的平移防抖。
进一步地,在本申请实施例中,所述防抖驱动部22沿高度方向被设置于所述防抖可动部21的下方,具体地,所述第一压电陶瓷板2211被设置于所述防抖固定部23,所述第一摩擦驱动部2212摩擦地耦接于所述防抖可动部21、所述第二压电陶瓷板2221被设置于所述防抖固定部23,所述第二摩擦驱动部2222摩擦地耦接于所述防抖可动部21。所述预压力装置24被夹持地固定于所述第一压电陶瓷板2211和所述基底232之间以及所述第二压电陶瓷板2221和所述基底232之间,以通过所述预压力装置24提供的预压力使得所述第一摩擦驱动部2212和所述第二摩擦驱动部2222保持与所述载体延伸臂212的摩擦板213摩擦接触。
在本申请中,所述第一压电致动器221和第二压电致动器222可以形成一自锁结构,即在停止施加电压后,所述第一压电致动器221和第二压电致动器222在所述预压力装置24的作用下将所述防抖可动部21保持在当前位置,而不会随着外部的晃动而造成位置改变,进而使得所述摄像模组的光学系统保持不变,进而避免了成像效果造成影响。也省去了在所述摄像模组中追加自锁装置,相对地减小了所述摄像模组的尺寸。由于第一压电致动器221和第二压电致动器222形成的自锁结构,因此无需保持压电致动器激活以保持其位置。
如图31和图34所示,在所述防抖驱动组件20中,所述预压力装置24提供所述防抖驱动部22和所述防抖可动部21之间的预压力,以使得所述防抖驱动部22的摩擦驱动部224能够可摩擦地耦接于所述防抖可动部21,以通过摩擦来驱动所述防抖可动部21沿着驱动的方向移动。
具体地,如图31和图34所示,所述预压力装置24包括第一弹性元件241和第二弹性元件242。所述第一弹性元件241设置于所述第一压电致动器221的第一压电陶瓷板2211与所述基底232之间,以通过所述第一弹性元件241的弹力提供所述第一压电致动器221被夹持地设置于所述防抖可动部21的载体延伸臂212与所述防抖固定部23的基底232之间,即,使得所述第一压电致动器221的第一摩擦驱动部2212抵触与所述防抖可动部21的载体延伸臂212,通过这样的方式,所述第一压电致动器221被摩擦地耦合于所述防抖可动部21。所述第二弹性元件242设置于所述第二压电致动器222的第二压电陶瓷板2221与所述基底232之间,以通过所述第二弹性元件242的弹力提供所述第二压电致动器222被夹持地设置于所述防抖可动部21的载体延伸臂212与所述防抖固定部23的基底232之间,即,使得所述第二压电致动器222的第二摩擦驱动部2222抵触与所述防抖可动部21的载体延伸臂212,通过这样的方式,所述第二压电致动器222被摩擦地耦合于所述防抖可动部21。
在本申请一个具体示例中,所述预压力装置24被实施为具有弹性的黏着剂,也就是,所述第一弹性元件241和所述第二弹性元件242被实施为固化后具有弹性的胶水。相应地,在安装过程中,可在 所述基底232的内底面和所述第一压电陶瓷板2211以及在所述基底232的内底面和所述第二压电陶瓷板2221之间分别施加一层厚度为10um至50um的黏着剂,以在所述黏着剂固化成型后形成所述第一弹性元件241和所述第二弹性元件242。也就是,所述预压力装置24的第一弹性元件241和所述第二弹性元件242在提供预压力的同时,还能够使得所述防抖驱动部22被固定于所述基底232的内侧壁的底面。
优选地,所述预压力装置24具有相对较高的平整度,即,在施加所述黏着剂以形成所述第一弹性元件241和所述第二弹性元件242时,尽可能地保证所施加的黏着剂具有相对较高的平整度且均匀度,从而使得所述防抖驱动部22能够平整地被固定于所述基底232,进而提升所述防抖驱动部22的稳定性。当然,在本申请其他示例中,所述预压力装置24的第一弹性元件241和第二弹性元件242也可以被实施为材料特性本身即存在弹性的橡胶,或者是由于形状而具有弹性的弹簧;也可以是具有粘性的弹性材质,例如粘合剂(硅胶、UV胶、热固胶、UV热固胶等)。
应可以理解,在该实施例中,所述预压力装置24被设置于所述基底232,所述预压力装置24产生沿Z轴方向向上的预压力,所述预压力能够保持所述防抖驱动部22的摩擦驱动部224与所述防抖可动部21的摩擦板213保持摩擦接触,并且,所述预压力还能够保持所述导引装置25被夹持于所述上盖231与所述防抖可动部21的载体延伸臂212之间,其中,所述预压力方向与所述驱动力的方向垂直。
如图32至图34所示,为了提高所述摄像模组在光学防抖过程中运动的稳定性,提高成像质量,在所述上盖231与防抖可动部21之间设置导引装置25,以在进行光学防抖时使得所述防抖可动部21相对于所述防抖固定部23移动的过程中始终对所述防抖可动部21形成支撑,使其能够平稳的滑动。也就是,在本申请实施例中,所述防抖驱动组件20进一步包括设置于所述载体延伸臂212的上表面和所述上盖231之间的导引装置25,所述导引装置25适于导引所述防抖可动部21在所述X轴和所述Y轴所设定的所述XOY平面内移动。
在本申请一个具体的示例中,所述导引装置25包括凹陷地形成于所述防抖可动部21的第一导引槽252和被收容于所述第一导引槽252内的导引元件251,其中,如前所述,在所述预压力装置24的作用下,所述导引装置25能够在所述防抖可动部21相对所述防抖固定部23移动的过程中始终与所述防抖可动部21保持接触并导引所述防抖可动部21的移动,以使得所述防抖可动部21能够平稳的移动。应可以理解,由于所述导引元件251置于所述第一导引槽252内,所述导引元件251的运动轨迹被限制在所述第一导引槽252内,所述导引元件251可以在所述第一导引槽252内沿垂直于所述光轴所在的平面内移动,以为所述防抖可动部21的移动提供导向。
具体地,在该具体示例中,所述导引装置25形成于所述收容腔230的上部2301,其中,所述第一导引槽252凹陷地形成于所述防抖可动部21的载体延伸臂212的上表面,并且所述第一导引槽252的开口朝向于所述防抖固定部23的上盖231。也就是说,所述上盖231面对所述第一导引槽252的部分为一平面结构,所述载体延伸臂212面对所述滚珠的部分为一凹槽结构,即所述导引元件251被容置于所述载体延伸臂212的所述第一导引槽252内,所述导引元件251仅可以在所述所述第一导引槽252内移动,并且所述第一导引槽252对所述导引元件251的移动进行限位,防止所述导引元件251 脱离其移动范围。
在本申请一个具体的示例中,所述导引元件251被实施为滚珠,例如,所述导引元件251被实施为由陶瓷材质形成的滚珠。优选地,在该具体示例中,所述第一导引槽252的深度小于等于所述滚珠的直径,以使得所述滚珠的至少一部分可以裸露于所述第一导引槽252的顶面,以使得所述滚珠能够与所述防抖可动部21的载体延伸臂212摩擦接触。
在本申请实施例中,所述导引装置25的数量至少为3,即,所述防抖驱动组件20至少包括3个所述导引装置25。优选地,在本申请实施例中,所述导引装置25的数量为4,其可分别位于所述防抖驱动组件20的四角处,以为所述防抖可动部21提供平稳的支撑,并且可以充分利用所述防抖驱动组件20空余的角落空间,使得所述防抖驱动组件20的结构更加紧凑。
值得一提的是,在本申请的其他示例中,所述导引装置25也可以为滑块-滑槽结构,本申请对此不做限制,也就是,所述导引元件251也可以被实施为滑槽,而所述第一导引槽252为滑槽。并且,在本申请的其他示例中,也可以在所述上盖231与所述防抖可动部21的上表面之间设置具有方向的第二导引槽(未有图示意),将所述导引元件251设置于所述第二导引槽内,所述导引元件251的运动轨迹被限制在该轨道内,因此能够在感光组件30移动的过程中起到导向的作用。并且,由于当所述导引元件251为滚珠时,所述滚珠能够通过滚动摩擦代替滑动摩擦,可以进一步减小所述防抖可动部21与所述上盖231间的摩擦力。
例如,在本申请一个具体的示例中,可在所述上盖231的底面设置一沿x轴方向的第二导引槽,在所述载体延伸臂212的上表面设置一沿y轴方向的第二导引槽(底面和上表面是指沿光轴方向,从感光芯片32到光学镜头10的方向),所述x方向的第二导引槽与y方向的第二导引槽相对设置形成一“十”字形的容纳腔,将所述导引元件251容纳其中。优选地,所述导引元件251和容纳腔数量为4,以使得所述防抖可动部21能够保持稳定。在进行光学防抖时,通过所述导引元件251和所述第二导引槽作为导向机构,可以为感光组件30提供更大的OIS行程。当然,在本申请的其他实施方式中,也可以在所述载体延伸臂212上表面既设置沿x轴方向的轨道也设置沿y轴方向的第二导引槽,并且两个同侧的轨道设置于载体延伸臂212的同一侧。与之相对的,在所述上盖231的下表面设置与所述载体延伸臂212上表面方向不同的第二导引槽,即在所述上盖231上与载体延伸臂212上x轴方向的第二导引槽相对的位置设置y轴方向的第二导引槽,在所述上盖231上与所述载体延伸臂212y轴方向的第二导引槽相对的位置设置x轴方向的第二导引槽,以避免出现干涉。
应注意到,在本申请实施例中,所述导引装置25的所述导引元件251被夹持于所述防抖可动部21和所述防抖固定部23的上盖231之间,即,所述导引装置25的所述导引元件251被夹持于所述收容腔230的上部2301,因此,所述导引元件251也能够提供一个使得所述防抖可动部21向下移动以使得所述防抖可动部21摩擦地耦接于所述防抖驱动部22的预压力。也就是,在本申请实施例中,所述导引装置25的导引元件251在实质上也发挥着预压力装置24的作用,即,所述导引元件251既可以作为导引装置25的一部分为所述防抖可动部21提供支撑,也可以作为预压力装置24为所述防抖驱动部22提供需要的预压力。
更具体地,在本申请实施例中,所述导引元件251被夹持于所述上盖231和所述防抖可动部21之 间,因此,通过所述导引元件251自身的重力和所述上盖231所施加的作用力,所述导引元件251能够产生迫使所述防抖可动部21向下的预压力,而所述防抖可动部21的下侧设有所述防抖驱动部22和所述预压力装置24,这样,所述导引元件251产生的预压力能够使得所述防抖可动部21抵触于所述防抖驱动部22,而另一方面,所述预压力装置24能够提供所述防抖驱动部22向上的预压力,这样在所述导引元件251和所述预压力装置24的协同作用下,能够确保所述防抖驱动部22始终与所述防抖可动部21摩擦接触。
进一步地,在本申请实施例中,所述第一压电陶瓷板2211与所述第二压电陶瓷板2221分别相对平行地固定于所述基底232的内底表面,所述第一摩擦驱动部2212与所述第二摩擦驱动部2222固定于所述第一压电陶瓷板2211与第二压电陶瓷板2221上并朝向所述防抖可动部21,并且与所述防抖可动部21的摩擦板213保持摩擦接触。即沿高度方向上,所述第一压电致动器221与所述第二压电致动器222分别设置于所述防抖可动部21的下方,所述导引元件251设置于所述防抖可动部21与所述上盖231之间,即所述导引元件251设置于所述防抖可动部21的上方。也就是说,所述设置模组沿Z轴方向由上至下的顺序为上盖231、导引元件251、防抖可动部21、第一压电致动器221和第二压电致动器222、基底232,所述防抖可动部21被夹持与所述导引元件251与所述第一压电致动器221和第二压电致动器222之间,所述导引元件251可以在上盖231的作用下产生向下的预压力,通过所述预压力使得所述第一压电致动器221和所述第二压电致动器222能够保持于所述防抖可动部21的摩擦板213摩擦接触。
在本申请中,所述第一摩擦驱动部2212、第二摩擦驱动部2222分别与所述载体延伸臂212相对的两边摩擦接触,所述导引元件251分别与所述上盖231和载体延伸臂212的四角摩擦接触,所述摩擦驱动部与所述摩擦板213之间的摩擦是主动摩擦,所述导引元件251与所述上盖231之间的摩擦为被动摩擦,所述第一摩擦驱动部2212、第二摩擦驱动部2222与所述载体延伸臂212的摩擦板213之间的摩擦力大于所述导引元件251与所述上盖231之间的摩擦力。也就是,在所述第一压电致动器221与所述第二压电致动器222的驱动下,所述第一摩擦驱动部2212、第二摩擦驱动部2222与所述载体延伸臂212的摩擦板213之间产生一较大的摩擦力,进而驱动所述防抖可动部21发生移动。在所述防抖可动部21的移动下,所述导引元件251与所述上盖231之间产生一较小的摩擦力,以避免对所述防抖可动部21的移动产生阻碍,进而影响防抖效果。
值得一提的是,在本申请其他示例中,所述导引装置25也可以被设置于所述防抖可动部21与所述基底232之间(即,设置于所述收容腔230的下部2302),而所述防抖驱动部22、所述预压力装置24和所述驱动基板26被设置于所述防抖可动部21与所述上盖231之间(即,设置于所述收容腔230的上部2301),但不变的是,所述导引装置25的导引元件251被夹持于所述收容腔230的下部2302并提供使得所述防抖可动部21抵触于所述防抖驱动部22的预压力。也就是说,虽然所述导引装置25与所述防抖驱动部22相对于所述防抖可动部21的位置可做出调整,但所述导引装置25的导引元件251仍能够发挥双重效果:导引作用和预压作用。
进一步地,如图25至图35所示,在本申请实施例中,所述驱动基板26设置于所述防抖驱动部22与所述基底232之间。具体地,如图25所示,所述基底232的底面设置有一组定位点2321,所述 驱动基板26通过所述基底232的定位点2321被固定于所述基底232上。
所述驱动基板26包括一连接端263和至少一导电端。优选地,所述导电端具有分体式结构且所述导电端的数量为2,即,所述至少一导电端包括第一导电端261和第二导电端262。所述第一压电致动器221的所述第一压电陶瓷板2211与所述第二压电致动器222的所述第二压电陶瓷板2221被分别设置并电连接于所述驱动基板26的所述第一导电端261和所述第二导电端262上,以使得所述第一压电致动器221和所述第二压电致动器222通过所述驱动基板26实现电路导通。也就是说,所述第一导电端261与所述第一压电致动器221同侧设置,所述第二导电端262与所述第二压电致动器222同侧设置。所述连接端263设置于所述防抖驱动组件20不设置所述第一压电致动器221与第二压电致动器222的一侧,例如,所述连接端263设置于所述第一导电端261和所述第二导电端262之间,并且所述连接端263电连接所述第一导电端261和所述第二导电端262,并通过所述连接端263将所述第一导电端261和所述第二导电端262与电子设备主板实现电路导通。在本申请中,将所述驱动基板26与所述线路板31分别与所述电子设备主板固定连接并实现电路导通,以减少所述驱动基板26对所述线路板31移动产生的阻力。
当然,在本申请的其他示例中,所述驱动基板26可以设置于所述基底232与所述预压力装置24之间,所述驱动基板26也可以设置于所述预压力装置24与所述防抖驱动部22之间。也就是说,所述驱动基板26可以直接设置于所述基底232上,也可以通过所述预压力装置24间接地设置于所述基底232上。
特别地,在本申请实施例中,所述基底232具有形成于其侧壁的一开槽,所述连接端263通过该开槽伸出,并实现与电子设备主板的电路导通。优选的,所述线路板31与所述连接端263从所述防抖驱动组件20的同一侧面延伸,即所述基底232的开槽与所述防抖可动部21的开口设置为同一侧,以使得所述线路板31与所述连接端263从所述防抖驱动组件20的同一侧电连接于电子设备的主板。所述防抖可动部21设置于所述基底232的上方,所述线路板31设置于所述驱动基板26的上方,所述线路板31与所述驱动基板26的连接端263沿高度方向具有一定间隙,所述间隙可以使得所述线路板31在移动过程中不会与所述驱动基板26接触,进而影响光学防抖的效果。所述间隙的范围为0.1mm-0.15mm。
当然,在本申请的其他示例中,也可以将所述驱动基板26与所述线路板31从所述防抖驱动组件20的不同侧延伸与电子设备的主板电连接,即所述基底232与所述防抖可动部21侧壁的开口可以设置于不同侧,如相对侧或相邻侧,以使得所述线路板31的移动不会受到影响。
图35图示了根据本申请实施例的所述防抖驱动组件20的一个变形实施例,其中,如图35所示,与上述实施例不同的是,所述第一压电致动器221与所述第二压电致动器222也可以沿Y轴方向相对平行地设置,即所述第一压电致动器221与第二压电致动器222的长度方向为沿Y轴方向,即所述第一压电致动器221与第二压电致动器222的宽度方向为沿Y轴方向。
在本申请的一示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿长度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿Y轴方向移动;在本申请的另一示例中,所述第一压电致动器221产生沿宽度方向的形 变,所述第二压电致动器222产生沿宽度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿X轴方向移动;在本申请的另一示例中,所述第一压电致动器221和第二压电致动器222先产生沿长度方向的形变,再产生沿宽度方向的形变,所述防抖可动部21在所述第一压电致动器221与第二压电致动器222的驱动下先沿Y轴方向移动,再沿X轴方向移动,即所述防抖可动部21能够在XOY所在的平面内移动;在本申请的另一示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿长度方向与之相反方向的形变(即+Y方向和-Y方向),所述防抖可动部21在第一压电致动器221与第二压电致动器222的驱动实现绕Z轴旋转运动。也就是说,在本申请中,所述第一压电致动器221与所述第二压电致动器222能够相互配合以驱动所述防抖可动部21在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转,以实现所述感光组件30的平移防抖和/或旋转防抖。
图36图示了根据本申请实施例的所述防抖驱动组件20的另一个变形实施例,其中,如图36所示,与上述实施例不同的是,所述第一压电致动器221与所述第二压电致动器222相互垂直地设置,即所述第一压电致动器221的长度方向沿X轴方向,宽度方向为沿Y轴方向;所述第二压电致动器222的长度方向为沿Y轴方向,宽度方向为沿X轴方向。所述第一压电致动器221与所述第二压电致动器222位于所述驱动组件20的相邻边。
在本申请的一示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿宽度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿X轴方向移动;在本申请的另一示例中,所述第一压电致动器221产生沿宽度方向的形变,所述第二压电致动器222产生沿长度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿Y轴方向移动;在本申请的另一示例中,所述第一压电致动器221先产生沿长度方向的形变,再产生沿宽度方向的形变,所述第二压电致动器222先产生沿宽度方向的形变,再产生沿长度方向的形变,所述防抖可动部21在所述第一压电致动器221与第二压电致动器222的驱动下先沿X轴方向移动,再沿Y轴方向移动,即所述防抖可动部21能够在XOY所在的平面内移动。也就是说,在本申请中,所述第一压电致动器221与所述第二压电致动器222能够相互配合以驱动所述防抖可动部21在X轴方向和Y轴方向上平移。
综上,基于本申请实施例的所述摄像模组被阐明,其中,所述摄像模组采用新型的压电致动器作为驱动元件以不仅能够提供足够大的驱动力,而且,能够提供精度更高和行程更长的驱动性能,以满足所述摄像模组的光学性能调整的需求,例如,光学防抖的需求。
示意性防抖驱动组件
根据本申请的另一方面,还提供了一种防抖驱动组件20,其包括:具有收容腔230的防抖固定部23;被悬持地设置于所述防抖固定部23的收容腔230内的防抖可动部21,以通过所述防抖可动部21将所述收容腔230分为上部2301和下部2302,其中,所述防抖可动部21适于安装感光组件30于其上;设置于所述收容腔230的下部2302的防抖驱动部22,其中,所述防抖驱动部22包括摩擦地耦接于所述防抖可动部21的第一压电致动器221和第二压电致动器222,所述第一压电致动器221和所述第二压电致动器222适于作动所述防抖可动部21在X轴和Y轴所设定的XOY平面内移动或绕着垂 直于所述X轴和所述Y轴的Z轴在所述XOY平面内旋转;以及,被夹持地设置于所述收容腔230的上部2301的导引元件251,其中,被夹持的所述导引元件251产生迫使所述防抖可动部21抵触于所述第一压电致动器221和所述第二压电致动器222的预压力以通过所述预压力使得所述第一压电致动器221和所述第二压电致动器222摩擦地耦接于所述防抖可动部21。
在根据本申请的防抖驱动组件20中,所述防抖固定部23包括基底232和与所述基底232相扣合的上盖231,所述收容腔230的上部2301形成于所述上盖231和所述防抖可动部21之间,所述收容腔230的下部2302形成于所述基底232和所述防抖可动部21之间。
在根据本申请的防抖驱动组件20中,所述防抖可动部21与所述基底232之间具有间隙,所述防抖可动部21与所述上盖231之间具有间隙,通过这样的方式,所述防抖可动部21被悬持于所述防抖固定部23的收容腔230内。
在根据本申请的防抖驱动组件20中,所述防抖可动部21被平稳地夹持于所述第一压电致动器221和所述导引元件251之间以及所述第二压电致动器222和所述导引元件251之间。
在根据本申请的防抖驱动组件20中,所述防抖可动部21包括载体主体211和自所述载体主体211向外延伸的载体延伸臂212,其中,所述导引元件251被夹持于所述上盖231的下表面和所述载体延伸臂212的上表面之间,所述第一压电致动器221和所述第二压电致动器222摩擦地耦接于所述载体延伸臂212的下表面。
在根据本申请的防抖驱动组件20中,所述防抖可动部21进一步包括形成于所述载体延伸臂212的下表面的摩擦板213,所述第一压电致动器221和所述第二压电致动器222摩擦地耦接于所述摩擦板213。
在根据本申请的防抖驱动组件20中,所述防抖驱动组件20进一步包括凹陷地形成于所述载体延伸臂212的上表面的第一导引槽252,所述导引元件251被收容于所述第一导引槽252内,所述导引元件251和所述第一导引槽252形成用于导引所述防抖可动部21和该感光组件30进行移动的导引装置25,其中,所述导引元件251的至少一部分突出于所述凹槽并抵触于所述上盖231的下表面,通过这样的方式,所述导引元件251被夹持于所述上盖231的下表面和所述载体延伸臂212的上表面之间。
在根据本申请的防抖驱动组件20中,所述导引元件251为导引元件251。
在根据本申请的防抖驱动组件20中,所述导引元件251为滑块。
在根据本申请的防抖驱动组件20中,所述第一导引槽252沿着所述X轴所设定的方向延伸,所述导引装置25进一步包括凹陷地形成于所述上盖231的下表面的第二导引槽,所述第二导引槽沿着所述Y轴所设定的方向延伸。
在根据本申请的防抖驱动组件20中,所述第一导引槽252沿着所述Y轴所设定的方向延伸,所述导引装置25进一步包括凹陷地形成于所述上盖231的下表面的第二导引槽,所述第二导引槽沿着所述X轴所设定的方向延伸。
在根据本申请的防抖驱动组件20中,所述第一导引段和所述第二导引槽相对设置且相互交叉。
在根据本申请的防抖驱动组件20中,所述第一压电致动器221和所述第二压电致动器222具有相 同的高度尺寸。
在根据本申请的防抖驱动组件20中,所述第一压电致动器221和所述第二压电致动器222的高度尺寸为0.7mm-0.9mm。
在根据本申请的防抖驱动组件20中,所述第一压电致动器221和所述第二压电致动器222为行波式压电致动器,其中,所述第一压电致动器221包括第一压电陶瓷板2211和突出于所述第一压电陶瓷板2211的第一摩擦驱动部2212,所述第一压电陶瓷板2211适于在被电驱动后发生形变以带动所述第一摩擦驱动部2212做单向偏摆往复运动;其中,所述第二压电致动器222包括第二压电陶瓷板2221和突出于所述第二压电陶瓷板2221的第二摩擦驱动部2222,所述第二压电陶瓷板2221适于在被电驱动后发生形变以带动所述第二摩擦驱动部2222做单向偏摆往复运动。
在根据本申请的防抖驱动组件20中,所述第一压电陶瓷板2211被设置于所述防抖固定部23,所述第一摩擦驱动部2212摩擦地耦接于所述防抖可动部21、所述第二压电陶瓷板2221被设置于所述防抖固定部23,所述第二摩擦驱动部2222摩擦地耦接于所述防抖可动部21。
在根据本申请的防抖驱动组件20中,所述第一压电致动器221和所述第二压电致动器222相互平行地布设于该感光组件30的相对的两侧。
在根据本申请的防抖驱动组件20中,所述第一压电致动器221和所述第二压电致动器222相对于该感光组件30以所述X轴或者所述Y轴为对称轴对称地布置于该感光组件30的相对的两侧。
在根据本申请的防抖驱动组件20中,所述第一压电致动器221适于沿着所述X轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动,且所述第二压电致动器222适于沿着所述X轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动;
其中,所述第一压电致动器221适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动,且所述第二压电致动器222适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动;
其中,所述第一压电致动器221适于沿着所述X轴所设定的第一方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的第一方向进行移动,且所述第二压电致动器222适于沿着所述X轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的第二方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动该感光组件30绕所述Z轴在所述XOY平面内进行旋转;
其中,所述第一压电致动器221适于沿着所述Y轴所设定的第一方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的第一方向进行移动,且所述第二压电致动器222适于沿着所述Y轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的第二方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222 作动该感光组件30绕所述Z轴在所述XOY平面内进行旋转。
在根据本申请的防抖驱动组件20中,所述防抖驱动组件20进一步包括设置于所述防抖可动部21和所述基底232之间的驱动基板26,所述驱动基板26包括至少一导电端和自所述导电端往外延伸的连接端263,所述第一压电致动器221和所述第二压电致动器222电连接于所述至少一电连接端263。
在根据本申请的防抖驱动组件20中,所述至少一导电端包括第一导电端261和第二导电端262,所述第一压电致动器221电连接于所述第一导电端261,所述第二压电致动器222电连接于所述第二导电端262。
在根据本申请的防抖驱动组件20中,所述防抖可动部21具有形成于所述载体主体211的侧壁的开槽,所述开槽被配置为允许该感光组件30的线路板31自所述开槽伸出所述安置槽2110。
在根据本申请的防抖驱动组件20中,所述基底232具有形成于其侧壁的开口,其中,所述连接端263子所述至少一导电端往外延伸并穿过所述开口。
在根据本申请的防抖驱动组件20中,所述开口和所述开槽具有高度差。
在根据本申请的防抖驱动组件20中,所述防抖驱动组件20进一步包括设置于所述防抖驱动部22和所述防抖固定部23之间的预压力装置24,以通过所述预压力装置24所提供的预压力迫使所述防抖驱动部22摩擦地耦接于所述防抖可动部21。
在根据本申请的防抖驱动组件20中,所述预压力装置24包括设置于所述基底232和所述第一压电致动器221的第一压电陶瓷板2211之间的第一弹性元件241,以通过所述第一弹性元件241自身的弹力产生所述预压力以迫使所述第一压电致动器221的第一摩擦驱动部2212抵触于所述摩擦板213,通过这样的方式使得所述第一压电致动器221的第一摩擦驱动部2212摩擦地耦接于所述摩擦板213;所述预压力装置24还包括设置于所述基底232和所述第二压电致动器222的第二压电陶瓷板2221之间的第二弹性元件242,以通过所述第二弹性元件242自身的弹力产生的所述预压力迫使所述第二压电致动器222的第二摩擦驱动部2222抵触于所述摩擦板213,通过这样的方式使得所述第二压电致动器222的第二摩擦驱动部2222摩擦地耦接于所述摩擦板213。
在根据本申请的防抖驱动组件20中,所述第一弹性元件241和所述第二弹性元件242的厚度尺寸为10um至50um。
综上,基于本申请实施例的防抖驱动组件20被阐明,其中,所述防抖驱动组件20的导引装置25和防抖驱动部22被相对地设置于所述防抖可动部21的两侧且所述导引装置25、所述防抖可动部21和所述防抖驱动部22都被夹持地设置于所述防抖固定部23所形成的收容腔230内,这样,所述导引装置25的导引元件251除了在起到导引所述防抖可动部21的移动外,还起到提供预压力以保持所述防抖驱动部22摩擦耦接于所述防抖可动部21。
示例性摄像模组
如图37至图52所示,根据本申请实施例的摄像模组被阐明,其包括感光组件30,被保持于所述感光组件30的感光路径上的光学镜头10以及用于驱动所述感光组件30进行移动以实现所述摄像模组的光学性能调整的防抖驱动组件20。
在本申请实施例中,所述感光组件30被安装于所述防抖驱动组件20内,例如,如图37至图52 所示,所述防抖驱动组件20具有位于其中间区域的安置槽2110,所述感光组件30以被收容于所述安置槽2110的方式安装于所述防抖驱动组件20内,这样,当所述防抖驱动组件20被驱动时其能承载着所述感光组件30沿着预设方向进行移动以实现所述摄像模组的光学性能的调整,例如,进行光学防抖等。并且,所述光学镜头10被保持预所述感光组件30的感光路径上,例如,所述光学镜头10以被固定于所述防抖驱动组件20的顶面的方式被安装于所述防抖驱动组件20上通过这样的方式使得所述光学镜头10被保持于所述感光组件30的感光路径上,这样所述感光组件30可以接收从所述光学镜头10投射出的光线以进行成像。
更具体地,如图37至图39所示,所述光学镜头10包括镜筒11和被安装于所述镜筒11内的镜片组,其中,所述镜片组包括至少一光学镜片12,且所述至少一光学镜片12的数量并不受限。
在本申请一个具体的示例中,所述光学镜头10以直接安置于所述防抖驱动组件20的顶面的方式被固定地设置于所述感光组件30的感光路径上。在本申请的另一示例中,所述光学镜头10可通过一镜座13被安置于所述防抖驱动组件20的顶面上,其中,所述镜座13具有形成于其中间的一通孔,被所述光学镜头10折射的光线能够通过该通孔入射至所述感光组件30。
在本申请的又一示例中,所述光学镜头10可通过一镜头驱动部分14被安置于所述防抖驱动组件20的顶面上,其中,所述镜头驱动部分14具有形成于其中的安置空间,所述光学镜头10被安装于所述镜头驱动部分14的安置空间内,并且所述镜头驱动部分14能够驱动所述光学镜头10移动,以实现光学对焦和/或光学防抖功能。在该示例中,所述镜头驱动部分14可以是音圈镜头驱动部分14、压电镜头驱动部分14、SMA(形状记忆合金,Shape Memory Alloy)镜头驱动部分14等类型的驱动镜头驱动部分14。进一步的,在本申请的一示例中,所述镜座13或所述镜头驱动部分14可以直接容纳所述光学镜头10的多个光学镜片12;在本申请的另一示例中,所述镜座13或镜头驱动部分14可以容纳所述光学镜头10的所述镜筒11和设置于所述镜筒11中的多个光学镜片12。
值得一提的是,在该具体示例的一些示例中,所述镜头驱动部分14还包括镜头对焦部,所述镜头对焦部适于驱动所述光学镜头10在Z轴方向平移,以调整所述光学镜头10相对所述感光组件30的距离,实现所述光学镜头10的对焦功能。并且,在该具体示例的一些实施例中,所述镜头驱动部分14还可以包括镜头防抖部,所述镜头防抖部适于驱动所述光学镜头10在X轴和Y轴方向上平移和/或绕Z轴方向旋转,以实现所述光学镜头10的平移防抖和/或旋转防抖;或者,所述镜头防抖部适于驱动所述光学镜头10在绕X轴方向和绕Y方向旋转,以实现所述光学镜头10的倾斜防抖。需指出的是,所述镜头驱动部分14可以仅包含所述镜头对焦部或者所述镜头防抖部;所述镜头驱动部分14还可以同时包括所述镜头对焦部和所述镜头防抖部,从而所述镜头驱动部分14不仅可以实现镜头对焦功能还可以实现镜头防抖功能。
如图40所示,在本申请实施例中,所述感光组件30包括线路板31、感光芯片32、电子元件33、底座34和滤光元件35。所述感光芯片32被设置于所述线路板31且电连接于所述线路板31,例如,所述感光芯片32被贴装于所述线路板31并电连接于所述线路板31,其中,所述底座34被设置于所述线路板31上且位于所述感光芯片32的周侧,所述滤光元件35以被安装于所述底座34的方式被保持于所述感光芯片32的感光路径上。所述感光芯片32包括感光区和围绕于所述感光区的非感光 区,其中,所述感光区由像素阵列组成,用于接收并感应来自外界的成像光线并将光信号转化为电信号。
在本申请的一个示例中,所述感光芯片32通过黏着剂被安装于所述线路板31的上表面,并通过打金线的方式电连接于所述线路板31。当然,在本申请其他示例中,所述感光芯片32还能以其他方式被设置于所述线路板31和/或其他方式电连接于所述线路板31,例如,以芯片倒装的方式贴附于所述线路板31的下表面,对此,并不为本申请所局限。应可以理解,在本申请实施例中,所述感光芯片32的感光路径形成所述感光组件30的感光路径。
所述底座34被设置于所述线路板31上以封装位于所述线路板31上的电子元件33且用于支撑其他部件。在本申请一个具体的示例中,所述基座被实施为单独成型的塑料支架,其通过黏着剂附着于所述线路板31的表面,并用于支撑其他部件。当然,在本申请其他示例中,所述基座还能以其他方式形成于所述线路板31,例如,所述基座被实施为模塑基座,其通过模塑工艺一体成型于所述线路板31的预设位置,对此,并不为本申请所局限。
在本申请实施例中,所述滤光元件35被保持于所述感光芯片32的感光路径上,用于对进入所述感光芯片32的成像光线进行过滤。在一个具体的示例中,所述滤光元件35被安装于所述底座34上且对应于所述感光芯片32的至少感光区域,通过这样的方式,所述滤光元件35被保持于所述感光芯片32的感光路径上。
值得一提的是,在本申请其他示例中,所述滤光元件35还能够以其他方式被安装于所述底座34上,例如,先在所述底座34上设置滤光元件支架,进而将所述滤光元件35安装在所述滤光元件支架上,也就是,在该示例中,所述滤光元件35可通过其他支撑件被间接地安装于所述底座34上。并且,在本申请的其他示例中,所述滤光元件35还能够被安装于所述可变焦摄像模组的其他位置,例如,所述滤光元件35形成于所述光学镜头10内(例如,作为一层滤光膜附着于所述变焦镜头组的某片光学透镜的表面),对此,并不为本申请所局限。
如前所述,为了满足越来越广泛的市场需求,高像素、大芯片、小尺寸是现有摄像模组不可逆转的发展趋势。随着感光芯片32朝着高像素和大芯片的方向发展,与感光芯片32适配的光学部件(例如,滤光元件35、光学镜头10)的尺寸也逐渐增大,这给用于驱动光学部件以进行光学性能调整(例如,光学对焦、光学防抖等)的驱动元件带来的新的挑战。
具体地,现有的用于驱动光学部件的驱动元件为电磁式马达,例如,音圈马达(Voice Coil Motor:VCM)、形状记忆合金驱动器(Shape of Memory Alloy Actuator:SMA)等。然而,随着光学部件尺寸增加而导致的重量增加,现有的电磁式马达已逐渐无法提供足够的驱动力来驱动光学部件移动。量化来看,现有的音圈马达和形状记忆合金驱动器仅适于驱动重量小于100mg的光学部件,也就是,如果光学部件的重量超过100mg,现有的驱动器将无法满足摄像模组的应用需求。
此外,随着移动终端设备朝着小型化和薄型化的方向发展,驱动元件内部的部件布设密度也随之提高。相应地,现有的音圈马达内部设有线圈和磁铁,当两个磁铁距离过近(小于7mm),其内部磁场会产生相互影响,导致磁铁产生位移或抖动,降低其驱动控制的稳定性。
因此,需要一种适配的用于摄像模组的新型驱动方案,且,新型的驱动器不仅能满足摄像模组对 于光学性能调整的驱动要求,且能够满足摄像模组轻型化和薄型化的发展需求。
经研究和试验,本申请提出了一种新型的驱动器,不仅相对具有更大的驱动力和更优的驱动性能(具体地包括:更高精度的驱动控制和更长的驱动行程),还能够适应于当下摄像模组轻型化和薄型化的发展趋势。
特别地,该种新型的驱动器为一种具有新型结构的压电致动器,该压电致动器能够满足所述摄像模组对于驱动器的技术要求。并且,进一步地采用合适的布置方式将所述压电致动器布置于所述摄像模组内以形成用于驱动所述感光组件30进行位置调整的防抖驱动组件20,以使得其满足所述摄像模组的结构设计要求和尺寸设计要求。
如图41至图52所示,在本申请实施例中,所述防抖驱动组件20包括防抖可动部21、防抖驱动部22、防抖固定部23、预压力装置24、导引装置25及驱动基板26,其中,所述防抖可动部21适于安装所述感光组件30于其上,所述防抖可动部21相对于所述防抖固定部23可移动,所述防抖驱动部22被设置于所述防抖固定部23和所述防抖可动部21之间且所述防抖驱动部22摩擦地耦接于所述防抖可动部21,以通过所述防抖驱动部22提供的摩擦驱动力驱动所述防抖可动部21相对于所述防抖固定部23进行移动,通过这样的方式,来驱动所述感光组件30进行移动从而实现所述摄像模组的光学性能的调整。
相应地,在本申请实施例中,所述感光组件30可联动地安装于所述防抖可动部21,例如,在本申请一个具体的示例中,所述感光组件30被固定地安装于所述防抖可动部21上,从而当所述防抖驱动部22驱动所述防抖可动部21时,所述感光组件30也被所述防抖可动部21所带动。所述防抖驱动部22被设置于所述防抖固定部23和所述防抖可动部21之间,例如,在本申请一个具体的示例中,所述防抖驱动部22以分别连接所述防抖可动部21和所述防抖固定部23的方式被设置于所述防抖固定部23和所述可动部之间。所述防抖驱动部22适于驱动所述感光组件30在X轴方向(即,X轴所设定的方向)和Y轴方向(即,Y轴所设定的方向)上平移和/或绕Z轴方向(即,Z轴所设定的方向)旋转,以实现所述感光组件30的平移防抖和/或旋转防抖,也就是,所述防抖驱动部22适于作动所述防抖可动部21在X轴和Y轴所设定的XOY平面内移动或绕着垂直于所述X轴和所述Y轴的Z轴在所述XOY平面内旋转。
值得一提的是,在本申请实施例中,所述X轴方向和所述Y轴方向相互垂直,所述Z轴方向垂直于所述X轴方向和所述Y轴方向所在平面,换言之,X轴、Y轴和Z轴构成了三维立体坐标系。
具体地,在本申请实施例中,所述防抖固定部23具有收容腔230,其中,所述防抖可动部21、所述防抖驱动部22、所述导引装置25、所述预压力装置24和所述驱动基板26被收容于所述防抖固定部23的收容腔230内,也就是说,所述防抖固定部23可以将所述防抖可动部21、所述防抖驱动部22、所述导引装置25、所述预压力装置24和所述驱动基板26容置于其中。更具体地,在本申请实施例中,所述防抖可动部21被悬持地设置于所述防抖固定部23的收容腔230内以将所述收容腔230分成两个部分(这里,为了便于说明,将所述收容腔230的两个部分定义为:第一部分2301和第二部分2302),其中,所述预压力装置24、所述驱动基板26和所述防抖驱动部22被设置于所述收容腔230的第一部分2301,而所述预压力装置24则被设置于所述收容腔230的与所述第一部分2301相对的所 述第二部分2302。
并且,在本申请实施例中,在所述收容腔230的第二部分2302中,所述驱动基板26与所述防抖驱动部22电连接,用于实现所述防抖驱动组件20的电路导通,所述预压力装置24通过其所产生的预压力保持所述防抖驱动部22与所述防抖可动部21之间摩擦地耦接。在所述收容腔230的所述第二部分2302,所述导引装置25用于导引所述防抖可动部21的移动。
更具体地,在本申请实施例中,所述防抖可动部21为一动子,其能够在所述防抖驱动部22的驱动下在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转,以实现所述感光组件30的平移防抖和/或旋转防抖功能。本申请中,由于所述防抖驱动部22采用特殊的驱动器作为驱动元件,所述防抖可动部21的数量为一,即仅需一个所述防抖可动部21可在所述防抖驱动部22的驱动下实现在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转的运动。
本领域普通技术人员应知晓,在传统的压电马达的驱动方案中,需要配置两个可动部(即,配置两个可动载体)方能实现在X轴方向和Y轴方向上的平移运动,即一个可动载体在X方向压电马达的驱动下实现X轴方向的移动,另一个可动载体在Y方向压电马达的驱动下实现Y轴方向的移动。相对于传统的压电马达方案,本申请仅需要通过一个防抖可动部21(即,仅需要一个可动载体)就可以实现在X轴方向和Y轴方向上的平移运动。相应地,通过减少所述防抖可动部21的数量以降低所述防抖驱动组件20的高度,进而减少摄像模组的高度,且由于所述防抖可动部21的数量的减小,所述防抖驱动组件20的内部元件的布置会显得更为紧凑,以利于缩减所述防抖驱动组件20的长宽尺寸。
如图41和图42所示,在本申请实施例中,所述防抖可动部21包括载体主体211、载体延伸臂212以及摩擦板213。所述载体主体211形成用于安装所述感光组件30于其内的所述安置槽2110,其中,所述感光组件30被固定于所述安置槽2110内以使得所述感光组件30能够在所述芯片防抖可动部21的带动下进行移动。
优选地,在本申请实施例中,所述载体主体211具有形成其侧壁的一开槽,以使得所述感光组件30的线路板31能够通过该开槽伸出并延伸至所述电子设备的主板。也就是,在本申请实施例中,所述载体主体211具有形成于其侧部的门,以通过所述门允许所述感光组件30的线路板31穿过并伸出所述防抖驱动组件20。
如图41和图42所示,在本申请实施例中,所述载体延伸臂212自所述载体主体211向外延伸,例如,所述载体延伸臂212一体地自所述载体主体211向外延伸。特别地,在本申请实施例中,所述载体延伸臂212与所述载体主体211的底面之间具有一定的高度差,也就是说,所述载体延伸臂212与所述载体主体211不在同一高度延伸。更明确地,在本申请实施例中,所述载体延伸臂212的高度高于所述载体主体211的高度,所述载体延伸臂212自所述载体主体211向上并向外延伸。这里,本申请中所指的“向上”表示指由像侧到物侧,“向外”表示远离光轴的方向。其中,具有高度差的所述载体延伸臂212与所述载体主体211与所述防抖固定部23相配合形成一沿Z轴方向的容置空间,所述容置空间可以用于安置所述防抖驱动部22,以使得所述摄像模组的结构更加紧凑。
如图41和图42所示,在本申请实施例中,所述摩擦板213设置于所述载体延伸臂212,例如, 所述摩擦板213一体地形成于所述载体延伸臂212,当然所述摩擦板213与所述载体延伸臂212也可以为分体时结构,例如,所述摩擦板213为独立的部件,其通过黏着剂附着于所述载体延伸臂212。优选地,所述摩擦板213被设置于所述载体延伸臂212的朝向于所述防抖驱动部22的一侧,即,被设置于所述载体延伸臂212的下表面。相应地,在本申请实施例中,所述摩擦板213被夹持地设置于所述防抖可动部21与所述防抖驱动部22之间,以通过所述防抖驱动部22和所述预压力装置24使得所述防抖可动部21被摩擦地耦合于所述载体延伸臂212。应可以理解,所述摩擦板213的作用在于提高所述防抖驱动部22和所述防抖可动部21之间的摩擦力。
并且,如图41和图42所示,在本申请实施例中,所述载体延伸臂212具有分别形成于相对的两边的两个U型槽,其中,在所述防抖可动部21的安装过程中,可以通过该U型槽对所述防抖可动部21进行夹持,便于安装。
如图41至图43所示,在本申请一个具体的示例中,所述防抖固定部23包括相互扣合的上盖231和基底232,其中,所述上盖231与所述基底232之间形成所述收容腔230,所述收容腔230用于将收容所述防抖可动部21、防抖驱动部22、预压力装置24、导引装置25及驱动基板26于其中,通过这样的方式,不仅可以保护所述防抖驱动组件20中的各个元件发生撞击损坏,也可以用于避免灰尘、脏污或杂散光进入所述防抖驱动组件20的内部。
更具体地,在该具体示例中,所述上盖231被套设于所述基底232的上方,并且所述上盖231具有与所述感光组件30相对应的开口,以使得经过物体反射的光线能够到达所述感光组件30。所述上盖231和基底232的材质可以为金属,例如冷轧碳素薄钢板(SPCC)或者不锈钢等导磁材料,不仅起到一定的导磁作用(即,加强磁场),而且能够有助于所述感光组件30的散热。应可以理解,在该具体示例中,所述上盖231与基底232均为定子,即在实现所述感光组件30的光学防抖功能时,所述上盖231与基底232保持不动,其中,所述光学镜头10固定设置于所述上盖231,并位于所述感光组件30的感光路径上。
当所述上盖231与基底232均为金属材质时,所述上盖231与基底232的四角处需设置有缺口,与所述缺口相邻的边可以进行弯折,以使得所述上盖231一基底232能够嵌套固定。由于在本申请中,所述感光组件30设置于所述防抖可动部21的安置槽2110内,因此即使通过所述防抖固定部23的缺口进入的灰尘也并不会进入到所述感光组件30,进而不会对成像效果造成影响。
也就是说,在本申请实施例中,所述防抖固定部23具有收容腔230,所述防抖可动部21被悬持于所述防抖固定部23的收容腔230内。应注意到,在本申请实施例中,所述防抖可动部21与所述基底232之间具有间隙,所述防抖可动部21与所述上盖231之间具有间隙,通过这样的方式,所述防抖可动部21被悬持于所述防抖固定部23的收容腔230内。
应可以理解,所述防抖可动部21悬架于所述收容腔230内,以通过所述防抖可动部21将所述收容腔230分成第一部分2301和第二部分2302,其中,所述第一部分2301形成于所述上盖231和所述防抖可动部21之间(也就是,所述第一部分2301为所述收容腔的上部),而所述第二部分2302则形成于所述防抖可动部21和所述基底232之间(也就是,所述第二部分2302为所述收容腔230的下部)。相应地,在本申请实施例中,在所述收容腔230的上部,所述上盖231的底面与所述防抖可动部 21的载体延伸臂212的顶面之间具有一间隙,所述间隙可以用于容置所述导引装置25,以通过所述导引装置25使得所述防抖可动部21支撑与所述防抖固定部23的上盖231;且在所述收容腔230的下部,所述基底232的底面与所述防抖可动部21的底面之间也具有一间隙,所述间隙可以用于容置所述防抖驱动部22、所述驱动基板26和所述预压力装置24。
进一步地,如图44至图50所示,在本申请实施例中,所述防抖驱动部22设置于所述防抖可动部21与所述防抖固定部23之间,优选地,所述防抖驱动部22设置于所述防抖可动部21的载体延伸臂212与所述防抖固定部23的基底232之间,即,所述防抖驱动部22被设置于所述收容腔230的第二部分2302。所述防抖驱动部22在被安装于所述防抖固定部23后,其与所述防抖可动部21摩擦接触,以通过所述防抖驱动部22驱动所述防抖可动部21在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转。应注意到,在本申请实施例中,所述防抖驱动部22被设置于所述防抖可动部21的载体主体211的侧部,即,所述防抖驱动部22被设置于所述载体延伸臂212和所述基底232所形成的容置空间内,以避免增加所述防抖驱动组件20的高度。
更具体地,在本申请实施例中,所述防抖驱动部22包括第一压电致动器221和第二压电致动器222,所述第一压电致动器221与第二压电致动器222被分别设置于所述防抖驱动组件20的相对的两侧。优选地,在本申请实施例中,所述第一压电致动器221和所述第二压电致动器222相互平行地布设于该感光组件30的相对的两侧,且所述第一压电致动器221和所述第二压电致动器222适于作动所述防抖可动部21和该感光组件30在X轴和Y轴所设定的XOY平面内移动或绕着垂直于所述X轴和所述Y轴的Z轴在所述XOY平面内旋转。
所述第一压电致动器221与所述第二压电致动器222具有相同的高度,以使得所述防抖可动部21设置于所述防抖驱动部22上不会产生倾斜,也就是,所述防抖可动部21被平稳地支持于所述第一压电致动器221和所述第二压电致动器222上。应可以理解,在本申请一些示例中,所述第一压电致动器221和所述第二压电致动器222的高度尺寸也不可不相等,但优选地,所述第一压电致动器221和所述第二压电致动器222所形成的安装面始终为平整表面,这样,所述防抖可动部21能被平稳地支持于所述第一压电致动器221和所述第二压电致动器222所形成的安装面上。
更具体地,在本申请实施例中,所述第一压电致动器221与所述第二压电致动器222沿X轴方向或Y轴方向相对平行设置,即,所述第一压电致动器221和所述第二压电致动器222相对于该感光组件30以所述X轴或者所述Y轴为对称轴被对称地布置于该感光组件30的相对的两侧。
进一步地,在本本申请实施例中,所述载体延伸臂212自所述载体主体211向外延伸,因此所述载体延伸臂212与所述基底232之间形成一容置空间,所述第一压电致动器221与所述第二压电致动器222分别被设置该容置空间内,并且所述第一压电致动器221和第二压电致动器222固定于所述基底232,并沿高度方向摩擦地耦接于设置于所述载体延伸臂212的下表面的所述摩擦板213。
在本申请实施例中,所述第一压电致动器221与所述第二压电致动器222被实施为同一种压电致动器。具体地,在本申请实施例中,所述压电致动器为行波式压电致动器,所述行波式压电致动器具有纳米级的步级精度,能够达到更极致的光学系统要求。并且,所述压电致动器推力较一般VCM马达(Voice coil Motor,音圈马达)推力大10倍,相对于一般VCM马达,所述压电致动器并不需要使 用线圈磁铁等部件,避免了电磁干扰,降低可靠性风险。并且本申请中使用的压电致动器的移动分辨率为1nm,可达成超分0.5um高精度要求。所述压电致动器为一长方体结构,即在XOY平面上,所述压电致动器的截面为一长方形结构,包括沿长度方向的两条长边和沿宽度方向的两条短边。由于所述压电致动器本身的结构,所述压电致动器被相对平行地设置于感光组件30的两侧,即所述第一压电致动器221与所述第二压电致动器222以X轴或Y轴为对称轴相对平行地设置于所述防抖固定部23上。通过这种设置方式可以使得所述第一压电致动器221和所述第二压电致动器222保持更好的一致性,从而所述感光组件30在被驱动时能够保持平稳的移动。
如图45所示,所述压电致动器包括压电陶瓷板223和摩擦驱动部224,在给所述压电致动器提供电源激励后,所述压电致动器的压电陶瓷板223生行波状态的两种面型变化,从而带动所述摩擦驱动部224产生沿X轴方向和/或Y轴方向的单向偏摆往复运动,由于所述摩擦驱动部224与摩擦板213之间的摩擦接触,进而带动所述摩擦板213移动。
具体地,当所述压电致动器被一种电源激励后,所述压电陶瓷板223会产生沿其长度方向波浪形运动形态,所述摩擦部在压电陶瓷片带动下沿其长度方向发生偏摆运动,从而带动所述摩擦板213沿所述压电致动器的长度方向移动;当所述压电致动器被另一种电源激励后,所述压电陶瓷板223会产生沿其宽度方向蛇形运动形态,所述摩擦部在带动下沿其宽度方向发生偏摆运动,从而带动所述摩擦板213沿所述压电致动器的宽度方向移动。
在本申请的一示例中,所述压电致动器可以分别实现沿其长度方向或宽度方向的面型变化,也就是,所述压电致动器可以同时实现沿其长度方向和宽度方向的面型变化。当所述压电致动器沿X轴方向设置,其长度方向为沿X轴方向,宽度方向为沿Y轴方向;当所述压电致动器沿Y轴方向设置,其长度方向为沿Y轴方向,宽度方向为沿X轴方向。相对于现有的压电马达仅能实现一个方向的驱动,本申请中的压电致动器可以产生不同的波形以进行X、Y方向运动,并且利用第一压电致动器221与第二压电致动器222的配合还能达成Z轴旋转运动。并且,本申请的所述压电致动器的高度为0.7mm~0.9mm,可隐藏于所述防抖驱动组件20中以降低所述防抖驱动组件20的高度。
因此,在所述压电致动器的驱动下,仅需要一个所述防抖可动部21就能够实现在XOY平面内的移动,从而带动所述感光组件30实现平移防抖和/或旋转防抖功能,相对于现有的压电马达减少了所述防抖可动部21的数量,不仅简化了所述摄像模组的结构,并且有利于减小摄像模组的高度。
相应地,所述第一压电致动器221包括第一压电陶瓷板2211和第一摩擦驱动部2212。所述第一压电陶瓷板2211由非常小的压电陶瓷组成,在给所述第一压电陶瓷板2211提供电源激励后,通过所述第一压电陶瓷板2211的逆压电效应,所述第一压电陶瓷板2211适于发生形变,从而所述第一压电陶瓷板2211上的第一摩擦驱动部2212随之运动。在本申请中,所述第一压电陶瓷板2211固定的设置于所述基底232,并且所述第一摩擦驱动部2212朝向所述防抖可动部21上的摩擦板213,并且所述第一摩擦驱动部2212与所述摩擦板213之间保持摩擦接触,以使得所述第一摩擦驱动部2212能够驱动所述摩擦板213发生移动。
具体的,在本申请的一示例中,所述第一摩擦驱动部2212位于所述摩擦板213的下方并与所述摩擦板213摩擦接触。优选地,在初始状态下,所述第一摩擦驱动部2212位于所述摩擦板213的中部位 置,所述摩擦板213可以在所述防抖驱动部22的驱动下在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转移动。应可以理解,在本申请其他示例中,在初始状态下,所述第一摩擦驱动部2212也可以位于所述摩擦板213的其他位置,例如,位于所述摩擦板213的端部,对此,并不为本申请所局限。并且,更优选地,所述摩擦板213的面积大于所述第一压电致动器221的驱动行程。
相应地,所述第二压电致动器222包括第二压电陶瓷板2221和第二摩擦驱动部2222。所述第二压电陶瓷板2221由非常小的压电陶瓷组成,在给所述第二压电陶瓷板2221提供电源激励后,通过所述第二压电陶瓷板2221的逆压电效应,所述第二压电陶瓷板2221适于发生形变,从而所述第二压电陶瓷板2221上的第二摩擦驱动部2222随之运动。在本申请中,所述第二压电陶瓷板2221被固定地设置于所述基底232,并且所述第二摩擦驱动部2222朝向所述防抖可动部21上的摩擦板213,并且所述第二摩擦驱动部2222与所述摩擦板213之间保持摩擦接触,以使得所述第二摩擦驱动部2222能够驱动所述摩擦板213发生移动。
具体的,在本申请的一示例中,所述第二摩擦驱动部2222位于所述摩擦板213的下方,并与所述摩擦板213摩擦接触。优选地,在初始状态下,所述第二摩擦驱动部2222位于所述摩擦板213的中部位置,所述摩擦板213可以在所述防抖驱动部22的驱动下在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转移动。当然,在本申请其他示例中,在初始状态下,所述第二摩擦驱动部2222也可以位于所述摩擦板213的其他位置,例如,位于所述摩擦板213的端部,对此,并不为本申请所局限。更优选地,所述摩擦板213的面积大于所述第一压电致动器221的驱动行程。
进一步地,在本申请一个具体的示例中,所述第一压电致动器221与所述第二压电致动器222沿X轴方向相对平行地设置,即所述第一压电致动器221和第二压电致动器222的长度方向为沿X轴方向,所述第一压电致动器221和第二压电致动器222的宽度方向为沿Y轴方向。相应地,在该具体示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿长度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿X轴方向移动。当然,在该具体示例中,所述第一压电致动器221产生沿宽度方向的形变,所述第二压电致动器222产生沿宽度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿Y轴方向移动。
并且,在该具体示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿长度方向与之相反方向的形变(即+X方向和-X方向),所述防抖可动部21在第一压电致动器221与第二压电致动器222的驱动实现绕Z轴旋转运动。也就是说,在本申请中,所述第一压电致动器221与所述第二压电致动器222能够相互配合以驱动所述防抖可动部21在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转,以实现所述感光组件30的平移防抖和/或旋转防抖。
应可以理解,由于所述第一压电致动器221和所述第二压电致动器222既可以产生沿长度方向的形变,又可以产生沿宽度方向的形变,因此仅一个所述防抖可动部21即可在所述第一压电致动器221和所述第二压电致动器222的驱动下实现XOY平面的平移防抖和绕Z轴方向的旋转防抖。
具体地,在本申请的一示例中,所述第一压电致动器221和第二压电致动器222先产生沿长度方向的形变再产生沿宽度方向的形变,所述防抖可动部21在所述第一压电致动器221与第二压电致动器 222的驱动下先沿所述X轴方向移动,再沿所述Y轴方向移动,通过这样的方式使得所述防抖可动部21能够在XOY所在的平面内进行移动。特别地,在本申请实施例中,虽然所述第一压电致动器221和所述第二压电致动器222能够产生宽度或长度方向的形变以提供两个方向的驱动力,但所述第一压电致动器221和所述第二压电致动器222所提供的驱动力仅限于长度方向和宽度方向,即,仅限于X轴方向和Y轴方向,因此,当需要驱动所述感光组件30沿着某个倾斜方向行进以进行光学防抖时,其必须先沿着所述X轴方向移动,而后在沿着所述Y轴方向移动(当然,也可以先沿着所述Y轴方向移动,而后沿着所述X轴方向移动)而不能直接沿着该倾斜方向进行移动,这也是其与传统的通过VCM马达来进行防抖的重要区别。
进一步的,所述第一压电致动器221产生沿所述X轴方向的第一方向(例如,X轴方向的正方向)的形变,所述第二压电致动器222产生沿所述X轴方向的第二方向(例如,X轴方向的负方向)的形变,即所述第一摩擦驱动部2212产生沿所述X轴方向的正方向的驱动力,所述第二摩擦驱动部2222产生沿所述X轴方向的负方向的驱动力,这样,所述防抖可动部21和所述感光组件30在第一压电致动器221与第二压电致动器222的驱动实现绕Z轴方向的旋转运动。
在本申请的另一示例中,所述第一压电致动器221和第二压电致动器222先产生沿宽度方向的形变,再产生沿长度方向的形变,所述防抖可动部21在所述第一压电致动器221与第二压电致动器222的驱动下先沿所述Y轴方向移动,再沿所述X轴方向进行移动,使得所述防抖可动部21能够在XOY所在的平面内进行移动。所述第一压电致动器221产生沿所述X轴方向的第一方向(例如,X轴方向的正方向)的形变,所述第二压电致动器222产生沿所述X轴方向的第二方向(例如,X轴方向的负方向)的形变,即所述第一摩擦驱动部2212产生沿所述X轴方向的正方向的驱动力,所述第二摩擦驱动部2222产生沿所述X轴方向的负方向的驱动力,这样,所述防抖可动部21和所述感光组件30在第一压电致动器221与第二压电致动器222的驱动实现绕Z轴方向的旋转运动。
也就是,在本申请实施例中,所述第一压电致动器221适于沿着所述X轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动,且所述第二压电致动器222适于沿着所述X轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动。并且,所述第一压电致动器221适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动,且所述第二压电致动器222适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动。并且,所述第一压电致动器221适于沿着所述X轴所设定的第一方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的第一方向进行移动,且所述第二压电致动器222适于沿着所述X轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的第二方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动该感光组件30绕所述Z轴在所述XOY平面内进行旋转。还有,所述第一压电致动器221适于沿着所 述Y轴所设定的第一方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的第一方向进行移动,且所述第二压电致动器222适于沿着所述Y轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的第二方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动该感光组件30绕所述Z轴在所述XOY平面内进行旋转。
综上所述,在本申请中,所述防抖可动部21既可以先实现XOY平面的平移防抖,再实现绕Z轴方向的旋转防抖;也可以先现实绕Z轴方向的旋转防抖,再实现XOY平面的平移防抖。
进一步地,在本申请实施例中,所述防抖驱动部22沿高度方向被设置于所述防抖可动部21的下方,具体地,所述第一压电陶瓷板2211被设置于所述防抖固定部23,所述第一摩擦驱动部2212摩擦地耦接于所述防抖可动部21、所述第二压电陶瓷板2221被设置于所述防抖固定部23,所述第二摩擦驱动部2222摩擦地耦接于所述防抖可动部21。所述预压力装置24被夹持地固定于所述第一压电陶瓷板2211和所述基底232之间以及所述第二压电陶瓷板2221和所述基底232之间,以通过所述预压力装置24提供的预压力使得所述第一摩擦驱动部2212和所述第二摩擦驱动部2222保持与所述载体延伸臂212的摩擦板213摩擦接触。
在本申请中,所述第一压电致动器221和第二压电致动器222可以形成一自锁结构,即在停止施加电压后,所述第一压电致动器221和第二压电致动器222在所述预压力装置24的作用下将所述防抖可动部21保持在当前位置,而不会随着外部的晃动而造成位置改变,进而使得所述摄像模组的光学系统保持不变,进而避免了成像效果造成影响。也省去了在所述摄像模组中追加自锁装置,相对地减小了所述摄像模组的尺寸。由于第一压电致动器221和第二压电致动器222形成的自锁结构,因此无需保持压电致动器激活以保持其位置。
如图47和图50所示,在所述防抖驱动组件20中,所述预压力装置24提供所述防抖驱动部22和所述防抖可动部21之间的预压力,以使得所述防抖驱动部22的摩擦驱动部224能够可摩擦地耦接于所述防抖可动部21,以通过摩擦来驱动所述防抖可动部21沿着驱动的方向移动。
具体地,如图47和图50所示,所述预压力装置24包括第一弹性元件241和第二弹性元件242。所述第一弹性元件241设置于所述第一压电致动器221的第一压电陶瓷板2211与所述基底232之间,以通过所述第一弹性元件241的弹力提供所述第一压电致动器221被夹持地设置于所述防抖可动部21的载体延伸臂212与所述防抖固定部23的基底232之间,即,使得所述第一压电致动器221的第一摩擦驱动部2212抵触与所述防抖可动部21的载体延伸臂212,通过这样的方式,所述第一压电致动器221被摩擦地耦合于所述防抖可动部21。所述第二弹性元件242设置于所述第二压电致动器222的第二压电陶瓷板2221与所述基底232之间,以通过所述第二弹性元件242的弹力提供所述第二压电致动器222被夹持地设置于所述防抖可动部21的载体延伸臂212与所述防抖固定部23的基底232之间,即,使得所述第二压电致动器222的第二摩擦驱动部2222抵触与所述防抖可动部21的载体延伸臂212,通过这样的方式,所述第二压电致动器222被摩擦地耦合于所述防抖可动部21。
在本申请一个具体示例中,所述预压力装置24被实施为具有弹性的黏着剂,也就是,所述第一弹性元件241和所述第二弹性元件242被实施为固化后具有弹性的胶水。相应地,在安装过程中,可在 所述基底232的内底面和所述第一压电陶瓷板2211以及在所述基底232的内底面和所述第二压电陶瓷板2221之间分别施加一层厚度为10um至50um的黏着剂,以在所述黏着剂固化成型后形成所述第一弹性元件241和所述第二弹性元件242。也就是,所述预压力装置24的第一弹性元件241和所述第二弹性元件242在提供预压力的同时,还能够使得所述防抖驱动部22被固定于所述基底232的内侧壁的底面。
优选地,所述预压力装置24具有相对较高的平整度,即,在施加所述黏着剂以形成所述第一弹性元件241和所述第二弹性元件242时,尽可能地保证所施加的黏着剂具有相对较高的平整度且均匀度,从而使得所述防抖驱动部22能够平整地被固定于所述基底232,进而提升所述防抖驱动部22的稳定性。当然,在本申请其他示例中,所述预压力装置24的第一弹性元件241和第二弹性元件242也可以被实施为材料特性本身即存在弹性的橡胶,或者是由于形状而具有弹性的弹簧;也可以是具有粘性的弹性材质,例如粘合剂(硅胶、UV胶、热固胶、UV热固胶等)。
应可以理解,在该实施例中,所述预压力装置24被设置于所述基底232,所述预压力装置24产生沿Z轴方向向上的预压力,所述预压力能够保持所述防抖驱动部22的摩擦驱动部224与所述防抖可动部21的摩擦板213保持摩擦接触,并且,所述预压力还能够保持所述导引装置25被夹持于所述上盖231与所述防抖可动部21的载体延伸臂212之间,其中,所述预压力方向与所述驱动力的方向垂直。
如图48至图50所示,为了提高所述摄像模组在光学防抖过程中运动的稳定性,提高成像质量,在所述上盖231与防抖可动部21之间设置导引装置25,以在进行光学防抖时使得所述防抖可动部21相对于所述防抖固定部23移动的过程中始终对所述防抖可动部21形成支撑,使其能够平稳的滑动。也就是,在本申请实施例中,所述防抖驱动组件20进一步包括设置于所述载体延伸臂212的上表面和所述上盖231之间的导引装置25,所述导引装置25适于导引所述防抖可动部21在所述X轴和所述Y轴所设定的所述XOY平面内移动。
在本申请一个具体的示例中,所述导引装置25包括凹陷地形成于所述防抖可动部21的第一导引槽252和被收容于所述第一导引槽252内的导引元件251,其中,如前所述,在所述预压力装置24的作用下,所述导引装置25能够在所述防抖可动部21相对所述防抖固定部23移动的过程中始终与所述防抖可动部21保持接触并导引所述防抖可动部21的移动,以使得所述防抖可动部21能够平稳的移动。应可以理解,由于所述导引元件251置于所述第一导引槽252内,所述导引元件251的运动轨迹被限制在所述第一导引槽252内,所述导引元件251可以在所述第一导引槽252内沿垂直于所述光轴所在的平面内移动,以为所述防抖可动部21的移动提供导向。
具体地,在该具体示例中,所述导引装置25形成于所述收容腔230的第一部分2301,其中,所述第一导引槽252凹陷地形成于所述防抖可动部21的载体延伸臂212的上表面,并且所述第一导引槽252的开口朝向于所述防抖固定部23的上盖231。也就是说,所述上盖231面对所述第一导引槽252的部分为一平面结构,所述载体延伸臂212面对所述滚珠的部分为一凹槽结构,即所述导引元件251被容置于所述载体延伸臂212的所述第一导引槽252内,所述导引元件251仅可以在所述所述第一导引槽252内移动,并且所述第一导引槽252对所述导引元件251的移动进行限位,防止所述导引元件 251脱离其移动范围。
在本申请一个具体的示例中,所述导引元件251被实施为滚珠,例如,所述导引元件251被实施为由陶瓷材质形成的滚珠。优选地,在该具体示例中,所述第一导引槽252的深度小于等于所述滚珠的直径,以使得所述滚珠的至少一部分可以裸露于所述第一导引槽252的顶面,以使得所述滚珠能够与所述防抖可动部21的载体延伸臂212摩擦接触。
在本申请实施例中,所述导引装置25的数量至少为3,即,所述防抖驱动组件20至少包括3个所述导引装置25。优选地,在本申请实施例中,所述导引装置25的数量为4,其可分别位于所述防抖驱动组件20的四角处,以为所述防抖可动部21提供平稳的支撑,并且可以充分利用所述防抖驱动组件20空余的角落空间,使得所述防抖驱动组件20的结构更加紧凑。
值得一提的是,在本申请的其他示例中,所述导引装置25也可以为滑块-滑槽结构,本申请对此不做限制,也就是,所述导引元件251也可以被实施为滑槽,而所述第一导引槽252为滑槽。并且,在本申请的其他示例中,也可以在所述上盖231与所述防抖可动部21的上表面之间设置具有方向的第二导引槽(未有图示意),将所述导引元件251设置于所述第二导引槽内,所述导引元件251的运动轨迹被限制在该轨道内,因此能够在感光组件30移动的过程中起到导向的作用。并且,由于当所述导引元件251为滚珠时,所述滚珠能够通过滚动摩擦代替滑动摩擦,可以进一步减小所述防抖可动部21与所述上盖231间的摩擦力。
例如,在本申请一个具体的示例中,可在所述上盖231的底面设置一沿x轴方向的第二导引槽,在所述载体延伸臂212的上表面设置一沿y轴方向的第二导引槽(底面和上表面是指沿光轴方向,从感光芯片32到光学镜头10的方向),所述x方向的第二导引槽与y方向的第二导引槽相对设置形成一“十”字形的容纳腔,将所述导引元件251容纳其中。优选地,所述导引元件251和容纳腔数量为4,以使得所述防抖可动部21能够保持稳定。在进行光学防抖时,通过所述导引元件251和所述第二导引槽作为导向机构,可以为感光组件30提供更大的OIS行程。当然,在本申请的其他实施方式中,也可以在所述载体延伸臂212上表面既设置沿x轴方向的轨道也设置沿y轴方向的第二导引槽,并且两个同侧的轨道设置于载体延伸臂212的同一侧。与之相对的,在所述上盖231的下表面设置与所述载体延伸臂212上表面方向不同的第二导引槽,即在所述上盖231上与载体延伸臂212上x轴方向的第二导引槽相对的位置设置y轴方向的第二导引槽,在所述上盖231上与所述载体延伸臂212y轴方向的第二导引槽相对的位置设置x轴方向的第二导引槽,以避免出现干涉。
应注意到,在本申请实施例中,所述导引装置25的所述导引元件251被夹持于所述防抖可动部21和所述防抖固定部23的上盖231之间,即,所述导引装置25的所述导引元件251被夹持于所述收容腔230的第一部分2301,因此,所述导引元件251也能够提供一个使得所述防抖可动部21向下移动以使得所述防抖可动部21摩擦地耦接于所述防抖驱动部22的预压力。也就是,在本申请实施例中,所述导引装置25的导引元件251在实质上也发挥着预压力装置24的作用,即,所述导引元件251既可以作为导引装置25的一部分为所述防抖可动部21提供支撑,也可以作为预压力装置24为所述防抖驱动部22提供需要的预压力。
更具体地,在本申请实施例中,所述导引元件251被夹持于所述上盖231和所述防抖可动部21之 间,因此,通过所述导引元件251自身的重力和所述上盖231所施加的作用力,所述导引元件251能够产生迫使所述防抖可动部21向下的预压力,而所述防抖可动部21的下侧设有所述防抖驱动部22和所述预压力装置24,这样,所述导引元件251产生的预压力能够使得所述防抖可动部21抵触于所述防抖驱动部22,而另一方面,所述预压力装置24能够提供所述防抖驱动部22向上的预压力,这样在所述导引元件251和所述预压力装置24的协同作用下,能够确保所述防抖驱动部22始终与所述防抖可动部21摩擦接触。
进一步地,在本申请实施例中,所述第一压电陶瓷板2211与所述第二压电陶瓷板2221分别相对平行地固定于所述基底232的内底表面,所述第一摩擦驱动部2212与所述第二摩擦驱动部2222固定于所述第一压电陶瓷板2211与第二压电陶瓷板2221上并朝向所述防抖可动部21,并且与所述防抖可动部21的摩擦板213保持摩擦接触。即沿高度方向上,所述第一压电致动器221与所述第二压电致动器222分别设置于所述防抖可动部21的下方,所述导引元件251设置于所述防抖可动部21与所述上盖231之间,即所述导引元件251设置于所述防抖可动部21的上方。也就是说,所述设置模组沿Z轴方向由上至下的顺序为上盖231、导引元件251、防抖可动部21、第一压电致动器221和第二压电致动器222、基底232,所述防抖可动部21被夹持与所述导引元件251与所述第一压电致动器221和第二压电致动器222之间,所述导引元件251可以在上盖231的作用下产生向下的预压力,通过所述预压力使得所述第一压电致动器221和所述第二压电致动器222能够保持于所述防抖可动部21的摩擦板213摩擦接触。
在本申请中,所述第一摩擦驱动部2212、第二摩擦驱动部2222分别与所述载体延伸臂212相对的两边摩擦接触,所述导引元件251分别与所述上盖231和载体延伸臂212的四角摩擦接触,所述摩擦驱动部与所述摩擦板213之间的摩擦是主动摩擦,所述导引元件251与所述上盖231之间的摩擦为被动摩擦,所述第一摩擦驱动部2212、第二摩擦驱动部2222与所述载体延伸臂212的摩擦板213之间的摩擦力大于所述导引元件251与所述上盖231之间的摩擦力。也就是,在所述第一压电致动器221与所述第二压电致动器222的驱动下,所述第一摩擦驱动部2212、第二摩擦驱动部2222与所述载体延伸臂212的摩擦板213之间产生一较大的摩擦力,进而驱动所述防抖可动部21发生移动。在所述防抖可动部21的移动下,所述导引元件251与所述上盖231之间产生一较小的摩擦力,以避免对所述防抖可动部21的移动产生阻碍,进而影响防抖效果。
也就是说,在本申请实施例中,当所述防抖驱动部22被驱动时,所述防抖驱动部22与所述防抖可动部21之间的摩擦力大于所述导引装置25在所述第一部分2301遇到的摩擦力。应可以理解,所述导引装置25的导引元件251(例如,滚珠)被夹持地设置于所述收容腔230的第一部分2301,因此,当所述防抖可动部21被所述防抖驱动部22通过摩擦驱动力驱动时,所述导引装置25的导引元件251也会与所述上盖231发生摩擦。相应地,为了发挥所述导引装置25的导引作用的同时,避免所述导引元件251对所述防抖可动部21的移动造成影响,因此,在本申请实施例中,配置所述防抖驱动部22与所述防抖可动部21之间的摩擦为主动摩擦,而所述导引元件251与所述上盖231之间的摩擦为被动摩擦,即,使得所述防抖驱动部22与所述防抖可动部21之间的摩擦力大于所述导引装置25在所述第一部分2301遇到的摩擦力,通过这样的方式,避免所述导引元件251对所述防抖可动部21的移动产 生阻碍,进而影响防抖效果.
值得一提的是,在本申请其他示例中,所述导引装置25也可以被设置于所述防抖可动部21与所述基底232之间(即,设置于所述收容腔230的第二部分2302),而所述防抖驱动部22、所述预压力装置24和所述驱动基板26被设置于所述防抖可动部21与所述上盖231之间(即,设置于所述收容腔230的第一部分2301),但不变的是,所述导引装置25的导引元件251与所述基底232之间的摩擦力小于所述防抖驱动部22与所述防抖可动部之间的摩擦驱动力,通过这样的方式,确保所述导引装置25在能够发挥导引作用的同时,避免因其存在而影响所述防抖可动部的移动。
进一步地,如图41至图51所示,在本申请实施例中,所述驱动基板26设置于所述防抖驱动部22与所述基底232之间。具体地,如图41所示,所述基底232的底面设置有一组定位点2321,所述驱动基板26通过所述基底232的定位点2321被固定于所述基底232上。
所述驱动基板26包括一连接端263和至少一导电端。优选地,所述导电端具有分体式结构且所述导电端的数量为2,即,所述至少一导电端包括第一导电端261和第二导电端262。所述第一压电致动器221的所述第一压电陶瓷板2211与所述第二压电致动器222的所述第二压电陶瓷板2221被分别设置并电连接于所述驱动基板26的所述第一导电端261和所述第二导电端262上,以使得所述第一压电致动器221和所述第二压电致动器222通过所述驱动基板26实现电路导通。也就是说,所述第一导电端261与所述第一压电致动器221同侧设置,所述第二导电端262与所述第二压电致动器222同侧设置。所述连接端263设置于所述防抖驱动组件20不设置所述第一压电致动器221与第二压电致动器222的一侧,例如,所述连接端263设置于所述第一导电端261和所述第二导电端262之间,并且所述连接端263电连接所述第一导电端261和所述第二导电端262,并通过所述连接端263将所述第一导电端261和所述第二导电端262与电子设备主板实现电路导通。在本申请中,将所述驱动基板26与所述线路板31分别与所述电子设备主板固定连接并实现电路导通,以减少所述驱动基板26对所述线路板31移动产生的阻力。
当然,在本申请的其他示例中,所述驱动基板26可以设置于所述基底232与所述预压力装置24之间,所述驱动基板26也可以设置于所述预压力装置24与所述防抖驱动部22之间。也就是说,所述驱动基板26可以直接设置于所述基底232上,也可以通过所述预压力装置24间接地设置于所述基底232上。
特别地,在本申请实施例中,所述基底232具有形成于其侧壁的一开槽,所述连接端263通过该开槽伸出,并实现与电子设备主板的电路导通。优选的,所述线路板31与所述连接端263从所述防抖驱动组件20的同一侧面延伸,即所述基底232的开槽与所述防抖可动部21的开口设置为同一侧,以使得所述线路板31与所述连接端263从所述防抖驱动组件20的同一侧电连接于电子设备的主板。所述防抖可动部21设置于所述基底232的上方,所述线路板31设置于所述驱动基板26的上方,所述线路板31与所述驱动基板26的连接端263沿高度方向具有一定间隙,所述间隙可以使得所述线路板31在移动过程中不会与所述驱动基板26接触,进而影响光学防抖的效果。所述间隙的范围为0.1mm-0.15mm。
当然,在本申请的其他示例中,也可以将所述驱动基板26与所述线路板31从所述防抖驱动组件 20的不同侧延伸与电子设备的主板电连接,即所述基底232与所述防抖可动部21侧壁的开口可以设置于不同侧,如相对侧或相邻侧,以使得所述线路板31的移动不会受到影响。
图51图示了根据本申请实施例的所述防抖驱动组件20的一个变形实施例,其中,如图51所示,与上述实施例不同的是,所述第一压电致动器221与所述第二压电致动器222也可以沿Y轴方向相对平行地设置,即所述第一压电致动器221与第二压电致动器222的长度方向为沿Y轴方向,即所述第一压电致动器221与第二压电致动器222的宽度方向为沿Y轴方向。
在本申请的一示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿长度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿Y轴方向移动;在本申请的另一示例中,所述第一压电致动器221产生沿宽度方向的形变,所述第二压电致动器222产生沿宽度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿X轴方向移动;在本申请的另一示例中,所述第一压电致动器221和第二压电致动器222先产生沿长度方向的形变,再产生沿宽度方向的形变,所述防抖可动部21在所述第一压电致动器221与第二压电致动器222的驱动下先沿Y轴方向移动,再沿X轴方向移动,即所述防抖可动部21能够在XOY所在的平面内移动;在本申请的另一示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿长度方向与之相反方向的形变(即+Y方向和-Y方向),所述防抖可动部21在第一压电致动器221与第二压电致动器222的驱动实现绕Z轴旋转运动。也就是说,在本申请中,所述第一压电致动器221与所述第二压电致动器222能够相互配合以驱动所述防抖可动部21在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转,以实现所述感光组件30的平移防抖和/或旋转防抖。
图52图示了根据本申请实施例的所述防抖驱动组件20的另一个变形实施例,其中,如图52所示,与上述实施例不同的是,所述第一压电致动器221与所述第二压电致动器222相互垂直地设置,即所述第一压电致动器221的长度方向沿X轴方向,宽度方向为沿Y轴方向;所述第二压电致动器222的长度方向为沿Y轴方向,宽度方向为沿X轴方向。所述第一压电致动器221与所述第二压电致动器222位于所述驱动组件20的相邻边。
在本申请的一示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿宽度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿X轴方向移动;在本申请的另一示例中,所述第一压电致动器221产生沿宽度方向的形变,所述第二压电致动器222产生沿长度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿Y轴方向移动;在本申请的另一示例中,所述第一压电致动器221先产生沿长度方向的形变,再产生沿宽度方向的形变,所述第二压电致动器222先产生沿宽度方向的形变,再产生沿长度方向的形变,所述防抖可动部21在所述第一压电致动器221与第二压电致动器222的驱动下先沿X轴方向移动,再沿Y轴方向移动,即所述防抖可动部21能够在XOY所在的平面内移动。也就是说,在本申请中,所述第一压电致动器221与所述第二压电致动器222能够相互配合以驱动所述防抖可动部21在X轴方向和Y轴方向上平移。
综上,基于本申请实施例的所述摄像模组被阐明,其中,所述摄像模组采用新型的压电致动器作 为驱动元件以不仅能够提供足够大的驱动力,而且,能够提供精度更高和行程更长的驱动性能,以满足所述摄像模组的光学性能调整的需求,例如,光学防抖的需求。
示意性防抖驱动组件
根据本申请的另一方面,还提供了一种防抖驱动组件20,其包括:具有收容腔230的防抖固定部23;被悬持地设置于所述防抖固定部23的收容腔230内的防抖可动部21,以通过所述防抖可动部21将所述收容腔230分为第一部分2301和第二部分2302,其中,所述防抖可动部21适于安装感光组件30于其上;设置于所述收容腔230的第二部分2302的防抖驱动部22,其中,所述防抖驱动部22包括摩擦地耦接于所述防抖可动部21的第一压电致动器221和第二压电致动器222,所述第一压电致动器221和所述第二压电致动器222适于作动所述防抖可动部21在X轴和Y轴所设定的XOY平面内移动或绕着垂直于所述X轴和所述Y轴的Z轴在所述XOY平面内旋转;以及,被夹持地设置于所述收容腔230的第一部分2301的导引元件251,其中,被夹持的所述导引元件251产生迫使所述防抖可动部21抵触于所述第一压电致动器221和所述第二压电致动器222的预压力以通过所述预压力使得所述第一压电致动器221和所述第二压电致动器222摩擦地耦接于所述防抖可动部21。
在根据本申请的防抖驱动组件20中,所述防抖固定部23包括基底232和与所述基底232相扣合的上盖231,所述收容腔230的第一部分2301形成于所述上盖231和所述防抖可动部21之间,所述收容腔230的第二部分2302形成于所述基底232和所述防抖可动部21之间。
在根据本申请的防抖驱动组件20中,所述防抖可动部21与所述基底232之间具有间隙,所述防抖可动部21与所述上盖231之间具有间隙,通过这样的方式,所述防抖可动部21被悬持于所述防抖固定部23的收容腔230内。
在根据本申请的防抖驱动组件20中,所述防抖可动部21被平稳地夹持于所述第一压电致动器221和所述导引元件251之间以及所述第二压电致动器222和所述导引元件251之间。
在根据本申请的防抖驱动组件20中,所述防抖可动部21包括载体主体211和自所述载体主体211向外延伸的载体延伸臂212,其中,所述导引元件251被夹持于所述上盖231的下表面和所述载体延伸臂212的上表面之间,所述第一压电致动器221和所述第二压电致动器222摩擦地耦接于所述载体延伸臂212的下表面。
在根据本申请的防抖驱动组件20中,所述防抖可动部21进一步包括形成于所述载体延伸臂212的下表面的摩擦板213,所述第一压电致动器221和所述第二压电致动器222摩擦地耦接于所述摩擦板213。
在根据本申请的防抖驱动组件20中,所述防抖驱动组件20进一步包括凹陷地形成于所述载体延伸臂212的上表面的第一导引槽252,所述导引元件251被收容于所述第一导引槽252内,所述导引元件251和所述第一导引槽252形成用于导引所述防抖可动部21和该感光组件30进行移动的导引装置25,其中,所述导引元件251的至少一部分突出于所述凹槽并抵触于所述上盖231的下表面,通过这样的方式,所述导引元件251被夹持于所述上盖231的下表面和所述载体延伸臂212的上表面之间。
在根据本申请的防抖驱动组件20中,所述导引元件251为导引元件251。
在根据本申请的防抖驱动组件20中,所述导引元件251为滑块。
在根据本申请的防抖驱动组件20中,所述第一导引槽252沿着所述X轴所设定的方向延伸,所述导引装置25进一步包括凹陷地形成于所述上盖231的下表面的第二导引槽,所述第二导引槽沿着所述Y轴所设定的方向延伸。
在根据本申请的防抖驱动组件20中,所述第一导引槽252沿着所述Y轴所设定的方向延伸,所述导引装置25进一步包括凹陷地形成于所述上盖231的下表面的第二导引槽,所述第二导引槽沿着所述X轴所设定的方向延伸。
在根据本申请的防抖驱动组件20中,所述第一导引段和所述第二导引槽相对设置且相互交叉。
在根据本申请的防抖驱动组件20中,所述第一压电致动器221和所述第二压电致动器222具有相同的高度尺寸。
在根据本申请的防抖驱动组件20中,所述第一压电致动器221和所述第二压电致动器222的高度尺寸为0.7mm-0.9mm。
在根据本申请的防抖驱动组件20中,所述第一压电致动器221和所述第二压电致动器222为行波式压电致动器,其中,所述第一压电致动器221包括第一压电陶瓷板2211和突出于所述第一压电陶瓷板2211的第一摩擦驱动部2212,所述第一压电陶瓷板2211适于在被电驱动后发生形变以带动所述第一摩擦驱动部2212做单向偏摆往复运动;其中,所述第二压电致动器222包括第二压电陶瓷板2221和突出于所述第二压电陶瓷板2221的第二摩擦驱动部2222,所述第二压电陶瓷板2221适于在被电驱动后发生形变以带动所述第二摩擦驱动部2222做单向偏摆往复运动。
在根据本申请的防抖驱动组件20中,所述第一压电陶瓷板2211被设置于所述防抖固定部23,所述第一摩擦驱动部2212摩擦地耦接于所述防抖可动部21、所述第二压电陶瓷板2221被设置于所述防抖固定部23,所述第二摩擦驱动部2222摩擦地耦接于所述防抖可动部21。
在根据本申请的防抖驱动组件20中,所述第一压电致动器221和所述第二压电致动器222相互平行地布设于该感光组件30的相对的两侧。
在根据本申请的防抖驱动组件20中,所述第一压电致动器221和所述第二压电致动器222相对于该感光组件30以所述X轴或者所述Y轴为对称轴对称地布置于该感光组件30的相对的两侧。
在根据本申请的防抖驱动组件20中,所述第一压电致动器221适于沿着所述X轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动,且所述第二压电致动器222适于沿着所述X轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动;
其中,所述第一压电致动器221适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动,且所述第二压电致动器222适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动;
其中,所述第一压电致动器221适于沿着所述X轴所设定的第一方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的第一方向进行移动,且所述第二压电致动器222适于沿着所述X轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的第二方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动该感光组件30绕所述Z轴在所述XOY平面内进行旋转;
其中,所述第一压电致动器221适于沿着所述Y轴所设定的第一方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的第一方向进行移动,且所述第二压电致动器222适于沿着所述Y轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的第二方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动该感光组件30绕所述Z轴在所述XOY平面内进行旋转。
在根据本申请的防抖驱动组件20中,所述防抖驱动组件20进一步包括设置于所述防抖可动部21和所述基底232之间的驱动基板26,所述驱动基板26包括至少一导电端和自所述导电端往外延伸的连接端263,所述第一压电致动器221和所述第二压电致动器222电连接于所述至少一电连接端263。
在根据本申请的防抖驱动组件20中,所述至少一导电端包括第一导电端261和第二导电端262,所述第一压电致动器221电连接于所述第一导电端261,所述第二压电致动器222电连接于所述第二导电端262。
在根据本申请的防抖驱动组件20中,所述防抖可动部21具有形成于所述载体主体211的侧壁的开槽,所述开槽被配置为允许该感光组件30的线路板31自所述开槽伸出所述安置槽2110。
在根据本申请的防抖驱动组件20中,所述基底232具有形成于其侧壁的开口,其中,所述连接端263子所述至少一导电端往外延伸并穿过所述开口。
在根据本申请的防抖驱动组件20中,所述开口和所述开槽具有高度差。
在根据本申请的防抖驱动组件20中,所述防抖驱动组件20进一步包括设置于所述防抖驱动部22和所述防抖固定部23之间的预压力装置24,以通过所述预压力装置24所提供的预压力迫使所述防抖驱动部22摩擦地耦接于所述防抖可动部21。
在根据本申请的防抖驱动组件20中,所述预压力装置24包括设置于所述基底232和所述第一压电致动器221的第一压电陶瓷板2211之间的第一弹性元件241,以通过所述第一弹性元件241自身的弹力产生所述预压力以迫使所述第一压电致动器221的第一摩擦驱动部2212抵触于所述摩擦板213,通过这样的方式使得所述第一压电致动器221的第一摩擦驱动部2212摩擦地耦接于所述摩擦板213;所述预压力装置24还包括设置于所述基底232和所述第二压电致动器222的第二压电陶瓷板2221之间的第二弹性元件242,以通过所述第二弹性元件242自身的弹力产生的所述预压力迫使所述第二压电致动器222的第二摩擦驱动部2222抵触于所述摩擦板213,通过这样的方式使得所述第二压电致动器222的第二摩擦驱动部2222摩擦地耦接于所述摩擦板213。
在根据本申请的防抖驱动组件20中,所述第一弹性元件241和所述第二弹性元件242的厚度尺寸为10um至50um。
综上,基于本申请实施例的防抖驱动组件20被阐明,其中,所述防抖驱动组件20的导引装置25 和防抖驱动部22被相对地设置于所述防抖可动部21的两侧且所述导引装置25、所述防抖可动部21和所述防抖驱动部22都被夹持地设置于所述防抖固定部23所形成的收容腔230内,这样,所述导引装置25的导引元件251除了在起到导引所述防抖可动部21的移动外,还起到提供预压力以保持所述防抖驱动部22摩擦耦接于所述防抖可动部21。
示例性摄像模组
如图53至图68所示,根据本申请实施例的摄像模组被阐明,其包括感光组件30,被保持于所述感光组件30的感光路径上的光学镜头10以及用于驱动所述感光组件30进行移动以实现所述摄像模组的光学性能调整的防抖驱动组件20。
在本申请实施例中,所述感光组件30被安装于所述防抖驱动组件20内,例如,如图53至图68所示,所述防抖驱动组件20具有位于其中间区域的安置槽2110,所述感光组件30以被收容于所述安置槽2110的方式安装于所述防抖驱动组件20内,这样,当所述防抖驱动组件20被驱动时其能承载着所述感光组件30沿着预设方向进行移动以实现所述摄像模组的光学性能的调整,例如,进行光学防抖等。并且,所述光学镜头10被保持于所述感光组件30的感光路径上,例如,所述光学镜头10以被固定于所述防抖驱动组件20的顶面的方式被安装于所述防抖驱动组件20上通过这样的方式使得所述光学镜头10被保持于所述感光组件30的感光路径上,这样所述感光组件30可以接收从所述光学镜头10投射出的光线以进行成像。
更具体地,如图53至图55所示,所述光学镜头10包括镜筒11和被安装于所述镜筒11内的镜片组,其中,所述镜片组包括至少一光学镜片12,且所述至少一光学镜片12的数量并不受限。
在本申请一个具体的示例中,所述光学镜头10以直接安置于所述防抖驱动组件20的顶面的方式被固定地设置于所述感光组件30的感光路径上。在本申请的另一示例中,所述光学镜头10可通过一镜座13被安置于所述防抖驱动组件20的顶面上,其中,所述镜座13具有形成于其中间的一通孔,被所述光学镜头10折射的光线能够通过该通孔入射至所述感光组件30。
在本申请的又一示例中,所述光学镜头10可通过一镜头驱动部分14被安置于所述防抖驱动组件20的顶面上,其中,所述镜头驱动部分14具有形成于其中的安置空间,所述光学镜头10被安装于所述镜头驱动部分14的安置空间内,并且所述镜头驱动部分14能够驱动所述光学镜头10移动,以实现光学对焦和/或光学防抖功能。在该示例中,所述镜头驱动部分14可以是音圈镜头驱动部分14、压电镜头驱动部分14、SMA(形状记忆合金,Shape Memory Alloy)镜头驱动部分14等类型的驱动镜头驱动部分14。进一步的,在本申请的一示例中,所述镜座13或所述镜头驱动部分14可以直接容纳所述光学镜头10的多个光学镜片12;在本申请的另一示例中,所述镜座13或镜头驱动部分14可以容纳所述光学镜头10的所述镜筒11和设置于所述镜筒11中的多个光学镜片12。
值得一提的是,在该具体示例的一些示例中,所述镜头驱动部分14还包括镜头对焦部,所述镜头对焦部适于驱动所述光学镜头10在Z轴方向平移,以调整所述光学镜头10相对所述感光组件30的距离,实现所述光学镜头10的对焦功能。并且,在该具体示例的一些实施例中,所述镜头驱动部分14还可以包括镜头防抖部,所述镜头防抖部适于驱动所述光学镜头10在X轴和Y轴方向上平移和/或绕Z轴方向旋转,以实现所述光学镜头10的平移防抖和/或旋转防抖;或者,所述镜头防抖部适于驱 动所述光学镜头10在绕X轴方向和绕Y方向旋转,以实现所述光学镜头10的倾斜防抖。需指出的是,所述镜头驱动部分14可以仅包含所述镜头对焦部或者所述镜头防抖部;所述镜头驱动部分14还可以同时包括所述镜头对焦部和所述镜头防抖部,从而所述镜头驱动部分14不仅可以实现镜头对焦功能还可以实现镜头防抖功能。
如图56所示,在本申请实施例中,所述感光组件30包括线路板31、感光芯片32、电子元件33、底座34和滤光元件35。所述感光芯片32被设置于所述线路板31且电连接于所述线路板31,例如,所述感光芯片32被贴装于所述线路板31并电连接于所述线路板31,其中,所述底座34被设置于所述线路板31上且位于所述感光芯片32的周侧,所述滤光元件35以被安装于所述底座34的方式被保持于所述感光芯片32的感光路径上。所述感光芯片32包括感光区和围绕于所述感光区的非感光区,其中,所述感光区由像素阵列组成,用于接收并感应来自外界的成像光线并将光信号转化为电信号。
在本申请的一个示例中,所述感光芯片32通过黏着剂被安装于所述线路板31的上表面,并通过打金线的方式电连接于所述线路板31。当然,在本申请其他示例中,所述感光芯片32还能以其他方式被设置于所述线路板31和/或其他方式电连接于所述线路板31,例如,以芯片倒装的方式贴附于所述线路板31的下表面,对此,并不为本申请所局限。应可以理解,在本申请实施例中,所述感光芯片32的感光路径形成所述感光组件30的感光路径。
所述底座34被设置于所述线路板31上以封装位于所述线路板31上的电子元件33且用于支撑其他部件。在本申请一个具体的示例中,所述基座被实施为单独成型的塑料支架,其通过黏着剂附着于所述线路板31的表面,并用于支撑其他部件。当然,在本申请其他示例中,所述基座还能以其他方式形成于所述线路板31,例如,所述基座被实施为模塑基座,其通过模塑工艺一体成型于所述线路板31的预设位置,对此,并不为本申请所局限。
在本申请实施例中,所述滤光元件35被保持于所述感光芯片32的感光路径上,用于对进入所述感光芯片32的成像光线进行过滤。在一个具体的示例中,所述滤光元件35被安装于所述底座34上且对应于所述感光芯片32的至少感光区域,通过这样的方式,所述滤光元件35被保持于所述感光芯片32的感光路径上。
值得一提的是,在本申请其他示例中,所述滤光元件35还能够以其他方式被安装于所述底座34上,例如,先在所述底座34上设置滤光元件支架,进而将所述滤光元件35安装在所述滤光元件支架上,也就是,在该示例中,所述滤光元件35可通过其他支撑件被间接地安装于所述底座34上。并且,在本申请的其他示例中,所述滤光元件35还能够被安装于所述可变焦摄像模组的其他位置,例如,所述滤光元件35形成于所述光学镜头10内(例如,作为一层滤光膜附着于所述变焦镜头组的某片光学透镜的表面),对此,并不为本申请所局限。
如前所述,为了满足越来越广泛的市场需求,高像素、大芯片、小尺寸是现有摄像模组不可逆转的发展趋势。随着感光芯片32朝着高像素和大芯片的方向发展,与感光芯片32适配的光学部件(例如,滤光元件35、光学镜头10)的尺寸也逐渐增大,这给用于驱动光学部件以进行光学性能调整(例如,光学对焦、光学防抖等)的驱动元件带来的新的挑战。
具体地,现有的用于驱动光学部件的驱动元件为电磁式马达,例如,音圈马达(Voice Coil Motor:VCM)、形状记忆合金驱动器(Shape of Memory Alloy Actuator:SMA)等。然而,随着光学部件尺寸增加而导致的重量增加,现有的电磁式马达已逐渐无法提供足够的驱动力来驱动光学部件移动。量化来看,现有的音圈马达和形状记忆合金驱动器仅适于驱动重量小于100mg的光学部件,也就是,如果光学部件的重量超过100mg,现有的驱动器将无法满足摄像模组的应用需求。
此外,随着移动终端设备朝着小型化和薄型化的方向发展,驱动元件内部的部件布设密度也随之提高。相应地,现有的音圈马达内部设有线圈和磁铁,当两个磁铁距离过近(小于7mm),其内部磁场会产生相互影响,导致磁铁产生位移或抖动,降低其驱动控制的稳定性。
因此,需要一种适配的用于摄像模组的新型驱动方案,且,新型的驱动器不仅能满足摄像模组对于光学性能调整的驱动要求,且能够满足摄像模组轻型化和薄型化的发展需求。
经研究和试验,本申请提出了一种新型的驱动器,不仅相对具有更大的驱动力和更优的驱动性能(具体地包括:更高精度的驱动控制和更长的驱动行程),还能够适应于当下摄像模组轻型化和薄型化的发展趋势。
特别地,该种新型的驱动器为一种具有新型结构的压电致动器,该压电致动器能够满足所述摄像模组对于驱动器的技术要求。并且,进一步地采用合适的布置方式将所述压电致动器布置于所述摄像模组内以形成用于驱动所述感光组件30进行位置调整的防抖驱动组件20,以使得其满足所述摄像模组的结构设计要求和尺寸设计要求。
如图57至图68所示,在本申请实施例中,所述防抖驱动组件20包括防抖可动部21、防抖驱动部22、防抖固定部23、预压力装置24、导引装置25及驱动基板26,其中,所述防抖可动部21适于安装所述感光组件30于其上,所述防抖可动部21相对于所述防抖固定部23可移动,所述防抖驱动部22被设置于所述防抖固定部23和所述防抖可动部21之间且所述防抖驱动部22摩擦地耦接于所述防抖可动部21,以通过所述防抖驱动部22提供的摩擦驱动力驱动所述防抖可动部21相对于所述防抖固定部23进行移动,通过这样的方式,来驱动所述感光组件30进行移动从而实现所述摄像模组的光学性能的调整。
相应地,在本申请实施例中,所述感光组件30可联动地安装于所述防抖可动部21,例如,在本申请一个具体的示例中,所述感光组件30被固定地安装于所述防抖可动部21上,从而当所述防抖驱动部22驱动所述防抖可动部21时,所述感光组件30也被所述防抖可动部21所带动。所述防抖驱动部22被设置于所述防抖固定部23和所述防抖可动部21之间,例如,在本申请一个具体的示例中,所述防抖驱动部22以分别连接所述防抖可动部21和所述防抖固定部23的方式被设置于所述防抖固定部23和所述可动部之间。所述防抖驱动部22适于驱动所述感光组件30在X轴方向(即,X轴所设定的方向)和Y轴方向(即,Y轴所设定的方向)上平移和/或绕Z轴方向(即,Z轴所设定的方向)旋转,以实现所述感光组件30的平移防抖和/或旋转防抖,也就是,所述防抖驱动部22适于作动所述防抖可动部21在X轴和Y轴所设定的XOY平面内移动或绕着垂直于所述X轴和所述Y轴的Z轴在所述XOY平面内旋转。
值得一提的是,在本申请实施例中,所述X轴方向和所述Y轴方向相互垂直,所述Z轴方向垂 直于所述X轴方向和所述Y轴方向所在平面,换言之,X轴、Y轴和Z轴构成了三维立体坐标系。
具体地,在本申请实施例中,所述防抖固定部23具有收容腔230,其中,所述防抖可动部21、所述防抖驱动部22、所述导引装置25、所述预压力装置24和所述驱动基板26被收容于所述防抖固定部23的收容腔230内,也就是说,所述防抖固定部23可以将所述防抖可动部21、所述防抖驱动部22、所述导引装置25、所述预压力装置24和所述驱动基板26容置于其中。更具体地,在本申请实施例中,所述防抖可动部21被悬持地设置于所述防抖固定部23的收容腔230内以将所述收容腔230分成两个部分(这里,为了便于说明,将所述收容腔230的两个部分定义为:第一部分2301和第二部分2302),其中,所述预压力装置24、所述驱动基板26和所述防抖驱动部22被设置于所述收容腔230的第一部分2301,而所述预压力装置24则被设置于所述收容腔230的与所述第一部分2301相对的所述第二部分2302。
并且,在本申请实施例中,在所述收容腔230的第二部分2302中,所述驱动基板26与所述防抖驱动部22电连接,用于实现所述防抖驱动组件20的电路导通,所述预压力装置24通过其所产生的预压力保持所述防抖驱动部22与所述防抖可动部21之间摩擦地耦接。在所述收容腔230的所述第一部分2301,所述导引装置25用于导引所述防抖可动部21的移动。
更具体地,在本申请实施例中,所述防抖可动部21具有适于安装所述感光组件30于其上的第二安装面2111,其中,所述防抖固定部23为一定位,所述防抖可动部21为一动子,所述防抖可动部21能够在所述防抖驱动部22的驱动下在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转,以实现所述感光组件30的平移防抖和/或旋转防抖功能。特别地,在本申请实施例中,所述防抖固定部23具有适于安装所述驱动基板26于其上的第一安装面2303,其中,所述第一安装面2303与所述第二安装面2111具有高度差以使得所述感光组件30的线路板31和所述驱动基板26从所述防抖驱动组件20的不同高度处延伸出来,从而避免了所述驱动基板26对所述感光组件的移动造成干扰。
特别地,由于所述防抖驱动部22采用特殊的驱动器作为驱动元件,所述防抖可动部21的数量为一,即仅需一个所述防抖可动部21可在所述防抖驱动部22的驱动下实现在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转的运动。
本领域普通技术人员应知晓,在传统的压电马达的驱动方案中,需要配置两个可动部(即,配置两个可动载体)方能实现在X轴方向和Y轴方向上的平移运动,即一个可动载体在X方向压电马达的驱动下实现X轴方向的移动,另一个可动载体在Y方向压电马达的驱动下实现Y轴方向的移动。相对于传统的压电马达方案,本申请仅需要通过一个防抖可动部21(即,仅需要一个可动载体)就可以实现在X轴方向和Y轴方向上的平移运动。相应地,通过减少所述防抖可动部21的数量以降低所述防抖驱动组件20的高度,进而减少摄像模组的高度,且由于所述防抖可动部21的数量的减小,所述防抖驱动组件20的内部元件的布置会显得更为紧凑,以利于缩减所述防抖驱动组件20的长宽尺寸。
如图57和图58所示,在本申请实施例中,所述防抖可动部21包括载体主体211、载体延伸臂212以及摩擦板213。所述载体主体211形成用于安装所述感光组件30于其内的所述安置槽2110,所述安置槽2110的内底表面形成所述第二安装面2111,其中,所述感光组件30以贴装于所述第二安装 面2111的方式被固定于所述安置槽2110内以使得所述感光组件30能够在所述芯片防抖可动部21的带动下进行移动。也就是说,在本申请实施例中,所述第二安装面2111位于所述收容腔230的第一部分2301。
优选地,在本申请实施例中,所述载体主体211具有形成其侧壁的一开槽2112,以使得所述感光组件30的线路板31能够通过所述开槽2112伸出并延伸至所述电子设备的主板。也就是,在本申请实施例中,所述载体主体211具有形成于其侧部的门,以通过所述门允许所述感光组件30的线路板31穿过并伸出所述防抖驱动组件20。
如图57和图58所示,在本申请实施例中,所述载体延伸臂212自所述载体主体211向外延伸,例如,所述载体延伸臂212一体地自所述载体主体211向外延伸。特别地,在本申请实施例中,所述载体延伸臂212与所述载体主体211的底面之间具有一定的高度差,也就是说,所述载体延伸臂212与所述载体主体211不在同一高度延伸。更明确地,在本申请实施例中,所述载体延伸臂212的高度高于所述载体主体211的高度,所述载体延伸臂212自所述载体主体211向上并向外延伸。这里,本申请中所指的“向上”表示指由像侧到物侧,“向外”表示远离光轴的方向。其中,具有高度差的所述载体延伸臂212与所述载体主体211与所述防抖固定部23相配合形成一沿Z轴方向的容置空间,所述容置空间可以用于安置所述防抖驱动部22,以使得所述摄像模组的结构更加紧凑。
如图57和图58所示,在本申请实施例中,所述摩擦板213设置于所述载体延伸臂212,例如,所述摩擦板213一体地形成于所述载体延伸臂212,当然所述摩擦板213与所述载体延伸臂212也可以为分体时结构,例如,所述摩擦板213为独立的部件,其通过黏着剂附着于所述载体延伸臂212。优选地,所述摩擦板213被设置于所述载体延伸臂212的朝向于所述防抖驱动部22的一侧,即,被设置于所述载体延伸臂212的下表面。相应地,在本申请实施例中,所述摩擦板213被夹持地设置于所述防抖可动部21与所述防抖驱动部22之间,以通过所述防抖驱动部22和所述预压力装置24使得所述防抖可动部21被摩擦地耦合于所述载体延伸臂212。应可以理解,所述摩擦板213的作用在于提高所述防抖驱动部22和所述防抖可动部21之间的摩擦力。
并且,如图57和图58所示,在本申请实施例中,所述载体延伸臂212具有分别形成于相对的两边的两个U型槽,其中,在所述防抖可动部21的安装过程中,可以通过该U型槽对所述防抖可动部21进行夹持,便于安装。
如图57至图59所示,在本申请一个具体的示例中,所述防抖固定部23包括相互扣合的上盖231和基底232,其中,所述上盖231与所述基底232之间形成所述收容腔230,所述收容腔230用于将收容所述防抖可动部21、防抖驱动部22、预压力装置24、导引装置25及驱动基板26于其中,通过这样的方式,不仅可以保护所述防抖驱动组件20中的各个元件发生撞击损坏,也可以用于避免灰尘、脏污或杂散光进入所述防抖驱动组件20的内部。
更具体地,在该具体示例中,所述上盖231被套设于所述基底232的上方,并且所述上盖231具有与所述感光组件30相对应的开口,以使得经过物体反射的光线能够到达所述感光组件30。所述上盖231和基底232的材质可以为金属,例如冷轧碳素薄钢板(SPCC)或者不锈钢等导磁材料,不仅起到一定的导磁作用(即,加强磁场),而且能够有助于所述感光组件30的散热。应可以理解,在该具 体示例中,所述上盖231与基底232均为定子,即在实现所述感光组件30的光学防抖功能时,所述上盖231与基底232保持不动,其中,所述光学镜头10固定设置于所述上盖231,并位于所述感光组件30的感光路径上。
当所述上盖231与基底232均为金属材质时,所述上盖231与基底232的四角处需设置有缺口,与所述缺口相邻的边可以进行弯折,以使得所述上盖231一基底232能够嵌套固定。由于在本申请中,所述感光组件30设置于所述防抖可动部21的安置槽2110内,因此即使通过所述防抖固定部23的缺口进入的灰尘也并不会进入到所述感光组件30,进而不会对成像效果造成影响。
也就是说,在本申请实施例中,所述防抖固定部23具有收容腔230,所述防抖可动部21被悬持于所述防抖固定部23的收容腔230内。应注意到,在本申请实施例中,所述防抖可动部21与所述基底232之间具有间隙,所述防抖可动部21与所述上盖231之间具有间隙,通过这样的方式,所述防抖可动部21被悬持于所述防抖固定部23的收容腔230内。
应可以理解,所述防抖可动部21悬架于所述收容腔230内,以通过所述防抖可动部21将所述收容腔230分成第一部分2301和第二部分2302,其中,所述第一部分2301形成于所述上盖231和所述防抖可动部21之间(也就是,所述第一部分2301为所述收容腔的上部),而所述第二部分2302则形成于所述防抖可动部21和所述基底232之间(也就是,所述第二部分2302为所述收容腔230的下部)。相应地,在本申请实施例中,在所述收容腔230的上部,所述上盖231的底面与所述防抖可动部21的载体延伸臂212的顶面之间具有一间隙,所述间隙可以用于容置所述导引装置25,以通过所述导引装置25使得所述防抖可动部21支撑与所述防抖固定部23的上盖231;且在所述收容腔230的下部,所述基底232的底面与所述防抖可动部21的底面之间也具有一间隙,所述间隙可以用于容置所述防抖驱动部22、所述驱动基板26和所述预压力装置24。
并且,在本申请实施例中,所述基底232的内底表面形成所述第一安装面2303,也就是说,所述第一安装面2303位于所述收容腔230的第二部分2302。应注意到,在本申请实施例中,所述第一安装面2303和所述第二安装面2111分别位于所述收容腔230的第一部分2301和第二部分2302,通过这样的方式,当所述感光组件30被安装于所述第二安装面2111时,所述感光组件30的线路板31能够从所述第一部分2301伸出而所述驱动基板26能够从所述第二部分2302伸出。也就是说,在本申请实施例中,所述驱动基板26和所述线路板31能够从所述收容腔230的不同部分伸出所述防抖驱动组件30以避免所述驱动基板26对所述感光组件30的移动造成干扰。
进一步地,如图60至图66所示,在本申请实施例中,所述防抖驱动部22设置于所述防抖可动部21与所述防抖固定部23之间,优选地,所述防抖驱动部22设置于所述防抖可动部21的载体延伸臂212与所述防抖固定部23的基底232之间,即,所述防抖驱动部22被设置于所述收容腔230的第二部分2302。所述防抖驱动部22在被安装于所述防抖固定部23后,其与所述防抖可动部21摩擦接触,以通过所述防抖驱动部22驱动所述防抖可动部21在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转。应注意到,在本申请实施例中,所述防抖驱动部22被设置于所述防抖可动部21的载体主体211的侧部,即,所述防抖驱动部22被设置于所述载体延伸臂212和所述基底232所形成的容置空间内,以避免增加所述防抖驱动组件20的高度。
更具体地,在本申请实施例中,所述防抖驱动部22包括第一压电致动器221和第二压电致动器222,所述第一压电致动器221与第二压电致动器222被分别设置于所述防抖驱动组件20的相对的两侧。优选地,在本申请实施例中,所述第一压电致动器221和所述第二压电致动器222相互平行地布设于该感光组件30的相对的两侧,且所述第一压电致动器221和所述第二压电致动器222适于作动所述防抖可动部21和该感光组件30在X轴和Y轴所设定的XOY平面内移动或绕着垂直于所述X轴和所述Y轴的Z轴在所述XOY平面内旋转。
所述第一压电致动器221与所述第二压电致动器222具有相同的高度,以使得所述防抖可动部21设置于所述防抖驱动部22上不会产生倾斜,也就是,所述防抖可动部21被平稳地支持于所述第一压电致动器221和所述第二压电致动器222上。应可以理解,在本申请一些示例中,所述第一压电致动器221和所述第二压电致动器222的高度尺寸也不可不相等,但优选地,所述第一压电致动器221和所述第二压电致动器222所形成的安装面始终为平整表面,这样,所述防抖可动部21能被平稳地支持于所述第一压电致动器221和所述第二压电致动器222所形成的安装面上。
更具体地,在本申请实施例中,所述第一压电致动器221与所述第二压电致动器222沿X轴方向或Y轴方向相对平行设置,即,所述第一压电致动器221和所述第二压电致动器222相对于该感光组件30以所述X轴或者所述Y轴为对称轴被对称地布置于该感光组件30的相对的两侧。
进一步地,在本本申请实施例中,所述载体延伸臂212自所述载体主体211向外延伸,因此所述载体延伸臂212与所述基底232之间形成一容置空间,所述第一压电致动器221与所述第二压电致动器222分别被设置该容置空间内,并且所述第一压电致动器221和第二压电致动器222固定于所述基底232,并沿高度方向摩擦地耦接于设置于所述载体延伸臂212的下表面的所述摩擦板213。
在本申请实施例中,所述第一压电致动器221与所述第二压电致动器222被实施为同一种压电致动器。具体地,在本申请实施例中,所述压电致动器为行波式压电致动器,所述行波式压电致动器具有纳米级的步级精度,能够达到更极致的光学系统要求。并且,所述压电致动器推力较一般VCM马达(Voice coil Motor,音圈马达)推力大10倍,相对于一般VCM马达,所述压电致动器并不需要使用线圈磁铁等部件,避免了电磁干扰,降低可靠性风险。并且本申请中使用的压电致动器的移动分辨率为1nm,可达成超分0.5um高精度要求。所述压电致动器为一长方体结构,即在XOY平面上,所述压电致动器的截面为一长方形结构,包括沿长度方向的两条长边和沿宽度方向的两条短边。由于所述压电致动器本身的结构,所述压电致动器被相对平行地设置于感光组件30的两侧,即所述第一压电致动器221与所述第二压电致动器222以X轴或Y轴为对称轴相对平行地设置于所述防抖固定部23上。通过这种设置方式可以使得所述第一压电致动器221和所述第二压电致动器222保持更好的一致性,从而所述感光组件30在被驱动时能够保持平稳的移动。
如图61所示,所述压电致动器包括压电陶瓷板223和摩擦驱动部224,在给所述压电致动器提供电源激励后,所述压电致动器的压电陶瓷板223会发生面型变化,从而带动所述摩擦驱动部224产生沿X轴方向和/或Y轴方向的单向偏摆往复运动,由于所述摩擦驱动部224与摩擦板213之间的摩擦接触,进而带动所述摩擦板213移动。
具体地,当所述压电致动器被一种电源激励后,所述压电陶瓷板223会产生沿其长度方向波浪形 运动形态,所述摩擦部在压电陶瓷片带动下沿其长度方向发生偏摆运动,从而带动所述摩擦板213沿所述压电致动器的长度方向移动;当所述压电致动器被另一种电源激励后,所述压电陶瓷板223会产生沿其宽度方向蛇形运动形态,所述摩擦部在带动下沿其宽度方向发生偏摆运动,从而带动所述摩擦板213沿所述压电致动器的宽度方向移动。
在本申请的一示例中,所述压电致动器可以分别实现沿其长度方向或宽度方向的面型变化,也就是,所述压电致动器可以选择性地沿其长度方向或者沿着其宽度方向进行面型变化。当所述压电致动器沿X轴方向设置,其长度方向为沿X轴方向,宽度方向为沿Y轴方向;当所述压电致动器沿Y轴方向设置,其长度方向为沿Y轴方向,宽度方向为沿X轴方向。相对于现有的压电马达仅能实现一个方向的驱动,本申请中的压电致动器可以产生不同的波形以进行X、Y方向运动,并且利用第一压电致动器221与第二压电致动器222的配合还能达成Z轴旋转运动。并且,本申请的所述压电致动器的高度为0.7mm~0.9mm,可隐藏于所述防抖驱动组件20中以降低所述防抖驱动组件20的高度。
因此,在所述压电致动器的驱动下,仅需要一个所述防抖可动部21就能够实现在XOY平面内的移动,从而带动所述感光组件30实现平移防抖和/或旋转防抖功能,相对于现有的压电马达减少了所述防抖可动部21的数量,不仅简化了所述摄像模组的结构,并且有利于减小摄像模组的高度。
相应地,所述第一压电致动器221包括第一压电陶瓷板2211和第一摩擦驱动部2212。所述第一压电陶瓷板2211由非常小的压电陶瓷组成,在给所述第一压电陶瓷板2211提供电源激励后,通过所述第一压电陶瓷板2211的逆压电效应,所述第一压电陶瓷板2211适于发生形变,从而所述第一压电陶瓷板2211上的第一摩擦驱动部2212随之运动。在本申请中,所述第一压电陶瓷板2211固定的设置于所述基底232,并且所述第一摩擦驱动部2212朝向所述防抖可动部21上的摩擦板213,并且所述第一摩擦驱动部2212与所述摩擦板213之间保持摩擦接触,以使得所述第一摩擦驱动部2212能够驱动所述摩擦板213发生移动。
具体的,在本申请的一示例中,所述第一摩擦驱动部2212位于所述摩擦板213的下方并与所述摩擦板213摩擦接触。优选地,在初始状态下,所述第一摩擦驱动部2212位于所述摩擦板213的中部位置,所述摩擦板213可以在所述防抖驱动部22的驱动下在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转移动。应可以理解,在本申请其他示例中,在初始状态下,所述第一摩擦驱动部2212也可以位于所述摩擦板213的其他位置,例如,位于所述摩擦板213的端部,对此,并不为本申请所局限。并且,更优选地,所述摩擦板213的面积大于所述第一压电致动器221的驱动行程。
相应地,所述第二压电致动器222包括第二压电陶瓷板2221和第二摩擦驱动部2222。所述第二压电陶瓷板2221由非常小的压电陶瓷组成,在给所述第二压电陶瓷板2221提供电源激励后,通过所述第二压电陶瓷板2221的逆压电效应,所述第二压电陶瓷板2221适于发生形变,从而所述第二压电陶瓷板2221上的第二摩擦驱动部2222随之运动。在本申请中,所述第二压电陶瓷板2221被固定地设置于所述基底232,并且所述第二摩擦驱动部2222朝向所述防抖可动部21上的摩擦板213,并且所述第二摩擦驱动部2222与所述摩擦板213之间保持摩擦接触,以使得所述第二摩擦驱动部2222能够驱动所述摩擦板213发生移动。
具体的,在本申请的一示例中,所述第二摩擦驱动部2222位于所述摩擦板213的下方,并与所述 摩擦板213摩擦接触。优选地,在初始状态下,所述第二摩擦驱动部2222位于所述摩擦板213的中部位置,所述摩擦板213可以在所述防抖驱动部22的驱动下在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转移动。当然,在本申请其他示例中,在初始状态下,所述第二摩擦驱动部2222也可以位于所述摩擦板213的其他位置,例如,位于所述摩擦板213的端部,对此,并不为本申请所局限。更优选地,所述摩擦板213的面积大于所述第一压电致动器221的驱动行程。
进一步地,在本申请一个具体的示例中,所述第一压电致动器221与所述第二压电致动器222沿X轴方向相对平行地设置,即所述第一压电致动器221和第二压电致动器222的长度方向为沿X轴方向,所述第一压电致动器221和第二压电致动器222的宽度方向为沿Y轴方向。相应地,在该具体示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿长度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿X轴方向移动。当然,在该具体示例中,所述第一压电致动器221产生沿宽度方向的形变,所述第二压电致动器222产生沿宽度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿Y轴方向移动。
并且,在该具体示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿长度方向与之相反方向的形变(即+X方向和-X方向),所述防抖可动部21在第一压电致动器221与第二压电致动器222的驱动实现绕Z轴旋转运动。也就是说,在本申请中,所述第一压电致动器221与所述第二压电致动器222能够相互配合以驱动所述防抖可动部21在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转,以实现所述感光组件30的平移防抖和/或旋转防抖。
应可以理解,由于所述第一压电致动器221和所述第二压电致动器222既可以产生沿长度方向的形变,又可以产生沿宽度方向的形变,因此仅一个所述防抖可动部21即可在所述第一压电致动器221和所述第二压电致动器222的驱动下实现XOY平面的平移防抖和绕Z轴方向的旋转防抖。
具体地,在本申请的一示例中,所述第一压电致动器221和第二压电致动器222先产生沿长度方向的形变再产生沿宽度方向的形变,所述防抖可动部21在所述第一压电致动器221与第二压电致动器222的驱动下先沿所述X轴方向移动,再沿所述Y轴方向移动,通过这样的方式使得所述防抖可动部21能够在XOY所在的平面内进行移动。特别地,在本申请实施例中,虽然所述第一压电致动器221和所述第二压电致动器222能够产生宽度或长度方向的形变以提供两个方向的驱动力,但所述第一压电致动器221和所述第二压电致动器222所提供的驱动力仅限于长度方向和宽度方向,即,仅限于X轴方向和Y轴方向,因此,当需要驱动所述感光组件30沿着某个倾斜方向行进以进行光学防抖时,其必须先沿着所述X轴方向移动,而后在沿着所述Y轴方向移动(当然,也可以先沿着所述Y轴方向移动,而后沿着所述X轴方向移动)而不能直接沿着该倾斜方向进行移动,这也是其与传统的通过VCM马达来进行防抖的重要区别。
进一步的,所述第一压电致动器221产生沿所述X轴方向的第一方向(例如,X轴方向的正方向)的形变,所述第二压电致动器222产生沿所述X轴方向的第二方向(例如,X轴方向的负方向)的形变,即所述第一摩擦驱动部2212产生沿所述X轴方向的正方向的驱动力,所述第二摩擦驱动部2222产生沿所述X轴方向的负方向的驱动力,这样,所述防抖可动部21和所述感光组件30在第一压 电致动器221与第二压电致动器222的驱动实现绕Z轴方向的旋转运动。
在本申请的另一示例中,所述第一压电致动器221和第二压电致动器222先产生沿宽度方向的形变,再产生沿长度方向的形变,所述防抖可动部21在所述第一压电致动器221与第二压电致动器222的驱动下先沿所述Y轴方向移动,再沿所述X轴方向进行移动,使得所述防抖可动部21能够在XOY所在的平面内进行移动。所述第一压电致动器221产生沿所述X轴方向的第一方向(例如,X轴方向的正方向)的形变,所述第二压电致动器222产生沿所述X轴方向的第二方向(例如,X轴方向的负方向)的形变,即所述第一摩擦驱动部2212产生沿所述X轴方向的正方向的驱动力,所述第二摩擦驱动部2222产生沿所述X轴方向的负方向的驱动力,这样,所述防抖可动部21和所述感光组件30在第一压电致动器221与第二压电致动器222的驱动实现绕Z轴方向的旋转运动。
也就是,在本申请实施例中,所述第一压电致动器221适于沿着所述X轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动,且所述第二压电致动器222适于沿着所述X轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动。并且,所述第一压电致动器221适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动,且所述第二压电致动器222适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动。并且,所述第一压电致动器221适于沿着所述X轴所设定的第一方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的第一方向进行移动,且所述第二压电致动器222适于沿着所述X轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的第二方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动该感光组件30绕所述Z轴在所述XOY平面内进行旋转。还有,所述第一压电致动器221适于沿着所述Y轴所设定的第一方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的第一方向进行移动,且所述第二压电致动器222适于沿着所述Y轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的第二方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动该感光组件30绕所述Z轴在所述XOY平面内进行旋转。
综上所述,在本申请中,所述防抖可动部21既可以先实现XOY平面的平移防抖,再实现绕Z轴方向的旋转防抖;也可以先现实绕Z轴方向的旋转防抖,再实现XOY平面的平移防抖。
进一步地,在本申请实施例中,所述防抖驱动部22沿高度方向被设置于所述防抖可动部21的下方,具体地,所述第一压电陶瓷板2211被设置于所述防抖固定部23,所述第一摩擦驱动部2212摩擦地耦接于所述防抖可动部21、所述第二压电陶瓷板2221被设置于所述防抖固定部23,所述第二摩擦驱动部2222摩擦地耦接于所述防抖可动部21。所述预压力装置24被夹持地固定于所述第一压电陶瓷板2211和所述基底232之间以及所述第二压电陶瓷板2221和所述基底232之间,以通过所述预压力 装置24提供的预压力使得所述第一摩擦驱动部2212和所述第二摩擦驱动部2222保持与所述载体延伸臂212的摩擦板213摩擦接触。
在本申请中,所述第一压电致动器221和第二压电致动器222可以形成一自锁结构,即在停止施加电压后,所述第一压电致动器221和第二压电致动器222在所述预压力装置24的作用下将所述防抖可动部21保持在当前位置,而不会随着外部的晃动而造成位置改变,进而使得所述摄像模组的光学系统保持不变,进而避免了成像效果造成影响。也省去了在所述摄像模组中追加自锁装置,相对地减小了所述摄像模组的尺寸。由于第一压电致动器221和第二压电致动器222形成的自锁结构,因此无需保持压电致动器激活以保持其位置。
如图63和图66所示,在所述防抖驱动组件20中,所述预压力装置24提供所述防抖驱动部22和所述防抖可动部21之间的预压力,以使得所述防抖驱动部22的摩擦驱动部224能够可摩擦地耦接于所述防抖可动部21,以通过摩擦来驱动所述防抖可动部21沿着驱动的方向移动。
具体地,如图63和图66所示,所述预压力装置24包括第一弹性元件241和第二弹性元件242。所述第一弹性元件241设置于所述第一压电致动器221的第一压电陶瓷板2211与所述基底232之间,以通过所述第一弹性元件241的弹力提供所述第一压电致动器221被夹持地设置于所述防抖可动部21的载体延伸臂212与所述防抖固定部23的基底232之间,即,使得所述第一压电致动器221的第一摩擦驱动部2212抵触与所述防抖可动部21的载体延伸臂212,通过这样的方式,所述第一压电致动器221被摩擦地耦合于所述防抖可动部21。所述第二弹性元件242设置于所述第二压电致动器222的第二压电陶瓷板2221与所述基底232之间,以通过所述第二弹性元件242的弹力提供所述第二压电致动器222被夹持地设置于所述防抖可动部21的载体延伸臂212与所述防抖固定部23的基底232之间,即,使得所述第二压电致动器222的第二摩擦驱动部2222抵触与所述防抖可动部21的载体延伸臂212,通过这样的方式,所述第二压电致动器222被摩擦地耦合于所述防抖可动部21。
在本申请一个具体示例中,所述预压力装置24被实施为具有弹性的黏着剂,也就是,所述第一弹性元件241和所述第二弹性元件242被实施为固化后具有弹性的胶水。相应地,在安装过程中,可在所述基底232的内底面和所述第一压电陶瓷板2211以及在所述基底232的内底面和所述第二压电陶瓷板2221之间分别施加一层厚度为10um至50um的黏着剂,以在所述黏着剂固化成型后形成所述第一弹性元件241和所述第二弹性元件242。也就是,所述预压力装置24的第一弹性元件241和所述第二弹性元件242在提供预压力的同时,还能够使得所述防抖驱动部22被固定于所述基底232的内侧壁的底面。
优选地,所述预压力装置24具有相对较高的平整度,即,在施加所述黏着剂以形成所述第一弹性元件241和所述第二弹性元件242时,尽可能地保证所施加的黏着剂具有相对较高的平整度且均匀度,从而使得所述防抖驱动部22能够平整地被固定于所述基底232,进而提升所述防抖驱动部22的稳定性。当然,在本申请其他示例中,所述预压力装置24的第一弹性元件241和第二弹性元件242也可以被实施为材料特性本身即存在弹性的橡胶,或者是由于形状而具有弹性的弹簧;也可以是具有粘性的弹性材质,例如粘合剂(硅胶、UV胶、热固胶、UV热固胶等)。
应可以理解,在该实施例中,所述预压力装置24被设置于所述基底232,所述预压力装置24产 生沿Z轴方向向上的预压力,所述预压力能够保持所述防抖驱动部22的摩擦驱动部224与所述防抖可动部21的摩擦板213保持摩擦接触,并且,所述预压力还能够保持所述导引装置25被夹持于所述上盖231与所述防抖可动部21的载体延伸臂212之间,其中,所述预压力方向与所述驱动力的方向垂直。
如图64至图66所示,为了提高所述摄像模组在光学防抖过程中运动的稳定性,提高成像质量,在所述上盖231与防抖可动部21之间设置导引装置25,以在进行光学防抖时使得所述防抖可动部21相对于所述防抖固定部23移动的过程中始终对所述防抖可动部21形成支撑,使其能够平稳的滑动。也就是,在本申请实施例中,所述防抖驱动组件20进一步包括设置于所述载体延伸臂212的上表面和所述上盖231之间的导引装置25,所述导引装置25适于导引所述防抖可动部21在所述X轴和所述Y轴所设定的所述XOY平面内移动。
在本申请一个具体的示例中,所述导引装置25包括凹陷地形成于所述防抖可动部21的第一导引槽252和被收容于所述第一导引槽252内的导引元件251,其中,如前所述,在所述预压力装置24的作用下,所述导引装置25能够在所述防抖可动部21相对所述防抖固定部23移动的过程中始终与所述防抖可动部21保持接触并导引所述防抖可动部21的移动,以使得所述防抖可动部21能够平稳的移动。应可以理解,由于所述导引元件251置于所述第一导引槽252内,所述导引元件251的运动轨迹被限制在所述第一导引槽252内,所述导引元件251可以在所述第一导引槽252内沿垂直于所述光轴所在的平面内移动,以为所述防抖可动部21的移动提供导向。
具体地,在该具体示例中,所述导引装置25形成于所述收容腔230的第一部分2301,其中,所述第一导引槽252凹陷地形成于所述防抖可动部21的载体延伸臂212的上表面,并且所述第一导引槽252的开口朝向于所述防抖固定部23的上盖231。也就是说,所述上盖231面对所述第一导引槽252的部分为一平面结构,所述载体延伸臂212面对所述滚珠的部分为一凹槽结构,即所述导引元件251被容置于所述载体延伸臂212的所述第一导引槽252内,所述导引元件251仅可以在所述所述第一导引槽252内移动,并且所述第一导引槽252对所述导引元件251的移动进行限位,防止所述导引元件251脱离其移动范围。
在本申请一个具体的示例中,所述导引元件251被实施为滚珠,例如,所述导引元件251被实施为由陶瓷材质形成的滚珠。优选地,在该具体示例中,所述第一导引槽252的深度小于等于所述滚珠的直径,以使得所述滚珠的至少一部分可以裸露于所述第一导引槽252的顶面,以使得所述滚珠能够与所述防抖可动部21的载体延伸臂212摩擦接触。
在本申请实施例中,所述导引装置25的数量至少为3,即,所述防抖驱动组件20至少包括3个所述导引装置25。优选地,在本申请实施例中,所述导引装置25的数量为4,其可分别位于所述防抖驱动组件20的四角处,以为所述防抖可动部21提供平稳的支撑,并且可以充分利用所述防抖驱动组件20空余的角落空间,使得所述防抖驱动组件20的结构更加紧凑。
值得一提的是,在本申请的其他示例中,所述导引装置25也可以为滑块-滑槽结构,本申请对此不做限制,也就是,所述导引元件251也可以被实施为滑槽,而所述第一导引槽252为滑槽。并且,在本申请的其他示例中,也可以在所述上盖231与所述防抖可动部21的上表面之间设置具有方向的第 二导引槽(未有图示意),将所述导引元件251设置于所述第二导引槽内,所述导引元件251的运动轨迹被限制在该轨道内,因此能够在感光组件30移动的过程中起到导向的作用。并且,由于当所述导引元件251为滚珠时,所述滚珠能够通过滚动摩擦代替滑动摩擦,可以进一步减小所述防抖可动部21与所述上盖231间的摩擦力。
例如,在本申请一个具体的示例中,可在所述上盖231的底面设置一沿x轴方向的第二导引槽,在所述载体延伸臂212的上表面设置一沿y轴方向的第二导引槽(底面和上表面是指沿光轴方向,从感光芯片32到光学镜头10的方向),所述x方向的第二导引槽与y方向的第二导引槽相对设置形成一“十”字形的容纳腔,将所述导引元件251容纳其中。优选地,所述导引元件251和容纳腔数量为4,以使得所述防抖可动部21能够保持稳定。在进行光学防抖时,通过所述导引元件251和所述第二导引槽作为导向机构,可以为感光组件30提供更大的OIS行程。当然,在本申请的其他实施方式中,也可以在所述载体延伸臂212上表面既设置沿x轴方向的轨道也设置沿y轴方向的第二导引槽,并且两个同侧的轨道设置于载体延伸臂212的同一侧。与之相对的,在所述上盖231的下表面设置与所述载体延伸臂212上表面方向不同的第二导引槽,即在所述上盖231上与载体延伸臂212上x轴方向的第二导引槽相对的位置设置y轴方向的第二导引槽,在所述上盖231上与所述载体延伸臂212y轴方向的第二导引槽相对的位置设置x轴方向的第二导引槽,以避免出现干涉。
应注意到,在本申请实施例中,所述导引装置25的所述导引元件251被夹持于所述防抖可动部21和所述防抖固定部23的上盖231之间,即,所述导引装置25的所述导引元件251被夹持于所述收容腔230的第一部分2301,因此,所述导引元件251也能够提供一个使得所述防抖可动部21向下移动以使得所述防抖可动部21摩擦地耦接于所述防抖驱动部22的预压力。也就是,在本申请实施例中,所述导引装置25的导引元件251在实质上也发挥着预压力装置24的作用,即,所述导引元件251既可以作为导引装置25的一部分为所述防抖可动部21提供支撑,也可以作为预压力装置24为所述防抖驱动部22提供需要的预压力。
进一步地,在本申请实施例中,所述第一压电陶瓷板2211与所述第二压电陶瓷板2221分别相对平行地固定于所述基底232的内底表面,所述第一摩擦驱动部2212与所述第二摩擦驱动部2222固定于所述第一压电陶瓷板2211与第二压电陶瓷板2221上并朝向所述防抖可动部21,并且与所述防抖可动部21的摩擦板213保持摩擦接触。即沿高度方向上,所述第一压电致动器221与所述第二压电致动器222分别设置于所述防抖可动部21的下方,所述导引元件251设置于所述防抖可动部21与所述上盖231之间,即所述导引元件251设置于所述防抖可动部21的上方。也就是说,所述设置模组沿Z轴方向由上至下的顺序为上盖231、导引元件251、防抖可动部21、第一压电致动器221和第二压电致动器222、基底232,所述防抖可动部21被夹持与所述导引元件251与所述第一压电致动器221和第二压电致动器222之间,所述导引元件251可以在上盖231的作用下产生向下的预压力,通过所述预压力使得所述第一压电致动器221和所述第二压电致动器222能够保持于所述防抖可动部21的摩擦板213摩擦接触。
在本申请中,所述第一摩擦驱动部2212、第二摩擦驱动部2222分别与所述载体延伸臂212相对的两边摩擦接触,所述导引元件251分别与所述上盖231和载体延伸臂212的四角摩擦接触,所述摩 擦驱动部与所述摩擦板213之间的摩擦是主动摩擦,所述导引元件251与所述上盖231之间的摩擦为被动摩擦,所述第一摩擦驱动部2212、第二摩擦驱动部2222与所述载体延伸臂212的摩擦板213之间的摩擦力大于所述导引元件251与所述上盖231之间的摩擦力。也就是,在所述第一压电致动器221与所述第二压电致动器222的驱动下,所述第一摩擦驱动部2212、第二摩擦驱动部2222与所述载体延伸臂212的摩擦板213之间产生一较大的摩擦力,进而驱动所述防抖可动部21发生移动。在所述防抖可动部21的移动下,所述导引元件251与所述上盖231之间产生一较小的摩擦力,以避免对所述防抖可动部21的移动产生阻碍,进而影响防抖效果。
值得一提的是,在本申请其他示例中,所述导引装置25也可以被设置于所述防抖可动部21与所述基底232之间(即,设置于所述收容腔230的第二部分2302),而所述防抖驱动部22、所述预压力装置24和所述驱动基板26被设置于所述防抖可动部21与所述上盖231之间(即,设置于所述收容腔230的第一部分2301),但不变的是,所述导引装置25的导引元件251与所述基底232之间的摩擦力小于所述防抖驱动部22与所述防抖可动部之间的摩擦驱动力,通过这样的方式,确保所述导引装置25在能够发挥导引作用的同时,避免因其存在而影响所述防抖可动部的移动。
进一步地,如图57至图67所示,在本申请实施例中,所述驱动基板26设置于所述防抖驱动部22与所述基底232之间。具体地,如图57所示,所述基底232的底面设置有一组定位点2321,所述驱动基板26通过所述基底232的定位点2321被固定于所述基底232上。
所述驱动基板26包括一连接端263和至少一导电端。优选地,所述导电端具有分体式结构且所述导电端的数量为2,即,所述至少一导电端包括第一导电端261和第二导电端262。所述第一压电致动器221的所述第一压电陶瓷板2211与所述第二压电致动器222的所述第二压电陶瓷板2221被分别设置并电连接于所述驱动基板26的所述第一导电端261和所述第二导电端262上,以使得所述第一压电致动器221和所述第二压电致动器222通过所述驱动基板26实现电路导通。也就是说,所述第一导电端261与所述第一压电致动器221同侧设置,所述第二导电端262与所述第二压电致动器222同侧设置。所述连接端263设置于所述防抖驱动组件20不设置所述第一压电致动器221与第二压电致动器222的一侧,例如,所述连接端263设置于所述第一导电端261和所述第二导电端262之间,并且所述连接端263电连接所述第一导电端261和所述第二导电端262,并通过所述连接端263将所述第一导电端261和所述第二导电端262与电子设备主板实现电路导通。在本申请中,将所述驱动基板26与所述线路板31分别与所述电子设备主板固定连接并实现电路导通,以减少所述驱动基板26对所述线路板31移动产生的阻力。
当然,在本申请的其他示例中,所述驱动基板26可以设置于所述基底232与所述预压力装置24之间,所述驱动基板26也可以设置于所述预压力装置24与所述防抖驱动部22之间。也就是说,所述驱动基板26可以直接设置于所述基底232上,也可以通过所述预压力装置24间接地设置于所述基底232上。
特别地,在本申请实施例中,所述基底232的内底表面形成所述第一安装面2303,并且,所述基底232具有形成于其侧壁的一开口2320,所述连接端263通过所述开口2320伸出,并实现与电子设备主板的电路导通。如前所述,在本申请实施例中,安装于所述第二安装面2111的所述感光组件30 适于从所述防抖可动部21的开槽21122112伸出所述收容腔230,而安装于所述第一安装面2303的所述驱动基板26适于从所述基底232的所述开口2320伸出所述收容腔230,这样通过所述感光组件30的线路板31和所述驱动基板26能够从所述防抖驱动组件20的不同高度处伸出,例如,设定安装于所述第一安装面2303的驱动基板26从所述防抖驱动组件20的第一高度伸出,且设定安装于所述第二安装面2111的所述感光组件30的线路板31适于从所述防抖驱动组件20的第二高度伸出。
优选地,所述线路板31与所述连接端263从所述防抖驱动组件20的同一侧面延伸,即所述基底232的开槽2112与所述防抖可动部21的开口2320设置为同一侧,例如,所述驱动基板26从所述防抖驱动组件20的第一侧伸出,且所述感光组件30的线路板31适于从所述防抖驱动组件的所述第一侧伸出,以使得所述线路板31与所述连接端263从所述防抖驱动组件20的同一侧电连接于电子设备的主板。所述防抖可动部21设置于所述基底232的上方,所述线路板31设置于所述驱动基板26的上方,所述线路板31与所述驱动基板26的连接端263沿高度方向具有一定间隙,所述间隙可以使得所述线路板31在移动过程中不会与所述驱动基板26接触,进而影响光学防抖的效果。所述间隙的范围为0.1mm-0.15mm,或者说,所述开口2320和所述开槽2112具有高度差,所述高度差为0.1mm-0.15mm,或者说,所述第一安装面2303和所述第二安装面2111之间具有高度差,所述高度差为0.1mm-0.15mm。
当然,在本申请的其他示例中,也可以将所述驱动基板26与所述线路板31从所述防抖驱动组件20的不同侧延伸与电子设备的主板电连接,即所述基底232与所述防抖可动部21侧壁的开口2320可以设置于不同侧,如相对侧或相邻侧,以使得所述线路板31的移动不会受到影响。例如,所述驱动基板26从所述防抖驱动组件20的第一侧伸出,且所述感光组件30的线路板31适于从所述防抖驱动组件20的第二侧伸出,其中,所述第一侧与所述第二侧相邻,或,所述第一侧与所述第二侧相对。
图67图示了根据本申请实施例的所述防抖驱动组件20的一个变形实施例,其中,如图67所示,与上述实施例不同的是,所述第一压电致动器221与所述第二压电致动器222也可以沿Y轴方向相对平行地设置,即所述第一压电致动器221与第二压电致动器222的长度方向为沿Y轴方向,即所述第一压电致动器221与第二压电致动器222的宽度方向为沿Y轴方向。
在本申请的一示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿长度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿Y轴方向移动;在本申请的另一示例中,所述第一压电致动器221产生沿宽度方向的形变,所述第二压电致动器222产生沿宽度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿X轴方向移动;在本申请的另一示例中,所述第一压电致动器221和第二压电致动器222先产生沿长度方向的形变,再产生沿宽度方向的形变,所述防抖可动部21在所述第一压电致动器221与第二压电致动器222的驱动下先沿Y轴方向移动,再沿X轴方向移动,即所述防抖可动部21能够在XOY所在的平面内移动;在本申请的另一示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿长度方向与之相反方向的形变(即+Y方向和-Y方向),所述防抖可动部21在第一压电致动器221与第二压电致动器222的驱动实现绕Z轴旋转运动。也就是说,在本申请中,所述第一压电致动器221与所述第二压电致动器222能 够相互配合以驱动所述防抖可动部21在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转,以实现所述感光组件30的平移防抖和/或旋转防抖。
图68图示了根据本申请实施例的所述防抖驱动组件20的另一个变形实施例,其中,如图68所示,与上述实施例不同的是,所述第一压电致动器221与所述第二压电致动器222相互垂直地设置,即所述第一压电致动器221的长度方向沿X轴方向,宽度方向为沿Y轴方向;所述第二压电致动器222的长度方向为沿Y轴方向,宽度方向为沿X轴方向。所述第一压电致动器221与所述第二压电致动器222位于所述驱动组件20的相邻边。
在本申请的一示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿宽度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿X轴方向移动;在本申请的另一示例中,所述第一压电致动器221产生沿宽度方向的形变,所述第二压电致动器222产生沿长度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿Y轴方向移动;在本申请的另一示例中,所述第一压电致动器221先产生沿长度方向的形变,再产生沿宽度方向的形变,所述第二压电致动器222先产生沿宽度方向的形变,再产生沿长度方向的形变,所述防抖可动部21在所述第一压电致动器221与第二压电致动器222的驱动下先沿X轴方向移动,再沿Y轴方向移动,即所述防抖可动部21能够在XOY所在的平面内移动。也就是说,在本申请中,所述第一压电致动器221与所述第二压电致动器222能够相互配合以驱动所述防抖可动部21在X轴方向和Y轴方向上平移。
综上,基于本申请实施例的所述摄像模组被阐明,其中,所述摄像模组采用新型的压电致动器作为驱动元件以不仅能够提供足够大的驱动力,而且,能够提供精度更高和行程更长的驱动性能,以满足所述摄像模组的光学性能调整的需求,例如,光学防抖的需求。
示例性摄像模组
如图1至图15所示,根据本申请实施例的摄像模组被阐明,其包括感光组件30,被保持于所述感光组件30的感光路径上的光学镜头10、用于驱动所述感光组件30进行移动以实现所述摄像模组的光学性能调整的防抖驱动组件20。
相应地,在本申请实施例中,所述防抖驱动组件20具有位于其中间区域的安置槽,其中,所述感光组件30以被收容于所述安置槽的方式安装于所述防抖驱动组件20内,这样,当所述防抖驱动组件20被驱动时其能承载着所述感光组件30沿着预设方向进行移动以实现所述摄像模组的光学性能的调整,例如,进行光学防抖等。并且,所述光学镜头10以被固定于所述防抖驱动组件20的顶面的方式被安装于所述防抖驱动组件20上且所述光学镜头10位于所述感光组件30的感光路径上,这样所述感光组件30可以接收从所述光学镜头10投射出的光线以进行成像。
更具体地,如图1至图3所示,被保持于所述感光组件30的感光路径上以采集外界成像光线的所述光学镜头10包括镜筒11和被安装于所述镜筒11内的镜片组,其中,所述镜片组包括至少一光学镜片12,且所述至少一光学镜片12的数量并不受限。
在本申请一个具体的示例中,所述光学镜头10以直接安置于所述防抖驱动组件20的顶面的方式被固定地设置于所述感光组件30的感光路径上。在本申请的另一示例中,所述光学镜头10可通过一 镜座13被安置于所述防抖驱动组件20的顶面上,其中,所述镜座13具有形成于其中间的一通孔,被所述光学镜头10折射的光线能够通过该通孔入射至所述感光组件30。
在本申请的又一示例中,所述光学镜头10可通过一镜头驱动部分14被安置于所述防抖驱动组件20的顶面上,其中,所述镜头驱动部分14具有形成于其中的安置空间,所述光学镜头10被安装于所述镜头驱动部分14的安置空间内,并且所述镜头驱动部分14能够驱动所述光学镜头10移动,以实现光学对焦和/或光学防抖功能。在该示例中,所述镜头驱动部分14可以是音圈镜头驱动部分14、压电镜头驱动部分14、SMA(形状记忆合金,Shape Memory Alloy)镜头驱动部分14等类型的驱动镜头驱动部分14。进一步的,在本申请的一示例中,所述镜座13或所述镜头驱动部分14可以直接容纳所述光学镜头10的多个光学镜片12;在本申请的另一示例中,所述镜座13或镜头驱动部分14可以容纳所述光学镜头10的所述镜筒11和设置于所述镜筒11中的多个光学镜片12。
值得一提的是,在该具体示例的一些实施例中,所述镜头驱动部分14还包括包括镜头对焦部,所述镜头对焦部适于驱动所述光学镜头10在Z轴方向平移,以调整所述光学镜头10相对所述感光组件30的距离,实现所述光学镜头10的对焦功能。并且,在该具体示例的一些实施例中,所述镜头驱动部分14还可以包括镜头防抖部,所述镜头防抖部适于驱动所述光学镜头10在X轴和Y轴方向上平移和/或绕Z轴方向旋转,以实现所述光学镜头10的平移防抖和/或旋转防抖;或者,所述镜头防抖部适于驱动所述光学镜头10在绕X轴方向和绕Y方向旋转,以实现所述光学镜头10的倾斜防抖。需指出的是,所述镜头驱动部分14可以仅包含所述镜头对焦部或者所述镜头防抖部;所述镜头驱动部分14还可以同时包括所述镜头对焦部和所述镜头防抖部,从而所述镜头驱动部分14不仅可以实现镜头对焦功能还可以实现镜头防抖功能。
如图4所示,所述感光组件30包括线路板31、感光芯片32、电子元件33、底座34和滤光元件35。所述感光芯片32设置于所述线路板31,并电连接于所述线路板31,其中,所述底座34被设置于所述线路板31上且位于所述感光芯片32的周侧,所述滤光元件35以被安装于所述底座34的方式被被保持于所述感光芯片32的感光路径上,所述感光芯片32包括一感光区和围绕于所述感光区的非感光区。
在本申请的一个示例中,所述感光芯片32被安装于所述线路板31的上表面,并通过打金线的方式电连接于所述线路板31。当然,在本申请其他示例中,所述感光芯片32还能以其他方式被设置于所述线路板31和/或其他方式电连接于所述线路板31,例如,以芯片倒装的方式贴附于所述线路板31的下表面,对此,并不为本申请所局限。应可以理解,在本申请实施例中,所述感光芯片32的感光路径形成所述感光组件30的感光路径。
所述底座34被设置于所述线路板31上以封装位于所述线路板31上的电子元件33且用于支撑其他部件。在本申请一个具体的示例中,所述基座被实施为单独成型的塑料支架,其通过黏着剂附着于所述线路板31的表面,并用于支撑其他部件。当然,在本申请其他示例中,所述基座还能以其他方式形成于所述线路板31,例如,所述基座被实施为模塑基座,其通过模塑工艺一体成型于所述线路板31的预设位置,对此,并不为本申请所局限。
在本申请实施例中,所述滤光元件35被保持于所述感光芯片32的感光路径上,用于对进入所述 感光芯片32的成像光线进行过滤。在一个具体的示例中,所述滤光元件35被安装于所述底座34上且对应于所述感光芯片32的至少感光区域,通过这样的方式,所述滤光元件35被保持于所述感光芯片32的感光路径上。值得一提的是,在本申请其他示例中,所述滤光元件35还能够以其他方式被安装于所述底座34上,例如,先在所述底座34上设置滤光元件支架,进而将所述滤光元件35安装在所述滤光元件35支架上,也就是,在该示例中,所述滤光元件35可通过其他支撑件被间接地安装于所述底座34上。并且,在本申请的其他示例中,所述滤光元件35还能够被安装于所述可变焦摄像模组的其他位置,例如,所述滤光元件35形成于所述光学镜头10内(例如,作为一层滤光膜附着于所述变焦镜头组的某片光学透镜的表面),对此,并不为本申请所局限。
如前所述,为了满足越来越广泛的市场需求,高像素、大芯片、小尺寸是现有摄像模组不可逆转的发展趋势。随着感光芯片32朝着高像素和大芯片的方向发展,与感光芯片32适配的光学部件(例如,滤光元件35、光学镜头10)的尺寸也逐渐增大,这给用于驱动光学部件以进行光学性能调整(例如,光学对焦、光学防抖等)的驱动元件带来的新的挑战。
具体地,现有的用于驱动光学部件的驱动元件为电磁式马达,例如,音圈马达(Voice Coil Motor:VCM)、形状记忆合金驱动器(Shape of Memory Alloy Actuator:SMA)等。然而,随着光学部件尺寸增加而导致的重量增加,现有的电磁式马达已逐渐无法提供足够的驱动力来驱动光学部件移动。量化来看,现有的音圈马达和形状记忆合金驱动器仅适于驱动重量小于100mg的光学部件,也就是,如果光学部件的重量超过100mg,现有的驱动器将无法满足摄像模组的应用需求。
此外,随着移动终端设备朝着小型化和薄型化的方向发展,驱动元件内部的部件布设密度也随之提高。相应地,现有的音圈马达内部设有线圈和磁铁,当两个磁铁距离过近(小于7mm),其内部磁场会产生相互影响,导致磁铁产生位移或抖动,降低其驱动控制的稳定性。
因此,需要一种适配的用于摄像模组的新型驱动方案,且,新型的驱动器不仅能满足摄像模组对于光学性能调整的驱动要求,且能够满足摄像模组轻型化和薄型化的发展需求。
经研究和试验,本申请提出了一种新型的驱动器,不仅相对具有更大的驱动力和更优的驱动性能(具体地包括:更高精度的驱动控制和更长的驱动行程),还能够适应于当下摄像模组轻型化和薄型化的发展趋势。
特别地,该种新型的驱动器为一种具有新型结构的压电致动器,该压电致动器能够满足所述摄像模组对于驱动器的技术要求。并且,进一步地采用合适的布置方式将所述压电致动器布置于所述摄像模组内以形成用于驱动所述感光组件30进行位置调整的防抖驱动组件20,以使得其满足所述摄像模组的结构设计要求和尺寸设计要求。
如图5至图15所示,所述防抖驱动组件20包括防抖可动部21、防抖驱动部22、防抖固定部23、预压力装置24、导引装置25及驱动基板26,其中,所述防抖可动部21适于安装所述感光组件30于其上,所述防抖可动部21相对于所述防抖固定部23可移动,所述防抖驱动部22被设置于所述防抖固定部23和所述防抖可动部21之间,且所述防抖驱动部22摩擦地耦接于所述防抖可动部21以通过所述防抖驱动部22所提供的摩擦驱动力驱动所述防抖可动部21相对于所述防抖固定部23进行移动,通过这样的方式,来驱动所述感光组件30进行移动从而实现所述摄像模组的光学性能的调整。
特别地,在本申请实施例中,所述感光组件30可联动地安装于所述防抖可动部21,例如,在本申请一个具体的示例中,所述感光组件30被固定地安装于所述防抖可动部21上,从而当所述防抖驱动部22驱动所述防抖可动部21时,所述感光组件30也被所述防抖可动部21所联动。所述防抖驱动部22被设置于所述防抖固定部23和所述防抖可动部21之间,例如,在本申请一个具体的示例中,所述防抖驱动部22以分别连接所述防抖可动部21和所述防抖固定部23的方式被设置于所述防抖固定部23和所述可动部之间。所述防抖驱动部22适于驱动所述感光组件30在X轴方向(即,X轴所设定的方向)和Y轴方向(即,Y轴所设定的方向)上平移和/或绕Z轴方向(即,Z轴所设定的方向)旋转,以实现所述感光组件30的平移防抖和/或旋转防抖。
值得一提的是,在本申请实施例中,所述X轴方向和所述Y轴方向相互垂直,所述Z轴方向垂直于所述X轴方向和所述Y轴方向所在平面,换言之,X轴、Y轴和Z轴构成了三维立体坐标系。
具体地,在本申请实施例中,所述防抖固定部23具有收容腔,所述防抖可动部21和所述防抖驱动部22被收容于所述防抖固定部23的收容腔内,也就是说,在本申请实施例中,所述防抖固定部23可以将所述防抖可动部21与所述防抖驱动部22容置其中。并且,所述防抖固定部23的顶面用于设置所述光学镜头10,以使得所述光学镜头10能够通过所述防抖固定部23安置于所述感光组件30的感光路径上。所述预压力装置24设置于所述防抖固定部23与所述防抖驱动部22之间,所述预压力装置24通过其所产生的预压力保持所述防抖驱动部22与所述防抖可动部21之间摩擦地耦接。所述导引装置25设置于所述防抖可动部21与所述防抖固定部23之间,所述防抖可动部21通过所述导引装置25悬持在所述防抖固定部23中,用于为所述芯片防抖可动部21的移动提供引导。所述驱动基板26与所述防抖驱动部22电连接,用于实现所述防抖驱动组件20的电路导通。
更具体地,在本申请实施例中,所述防抖可动部21为一动子,其能够在所述防抖驱动部22的驱动下在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转,以实现所述感光组件30的平移防抖和/或旋转防抖功能。本申请中,由于所述防抖驱动部22采用特殊的驱动器作为驱动元件,所述防抖可动部21的数量为一,即仅需一个所述防抖可动部21可在所述防抖驱动部22的驱动下实现在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转的运动。
本领域普通技术人员应知晓,在传统的压电马达的驱动方案中,需要配置两个可动部(即,配置两个可动载体)方能实现在X轴方向和Y轴方向上的平移运动,即一个可动载体在X方向压电马达的驱动下实现X轴方向的移动,另一个可动载体在Y方向压电马达的驱动下实现Y轴方向的移动。相对于传统的压电马达方案,本申请仅需要通过一个防抖可动部21(即,仅需要一个可动载体)就可以实现在X轴方向和Y轴方向上的平移运动。相应地,通过减少所述防抖可动部21的数量以降低所述防抖驱动组件20的高度,进而减少摄像模组的高度,且由于所述防抖可动部21的数量的减小,所述防抖驱动组件20的内部元件的布置会显得更为紧凑,以利于缩减所述防抖驱动组件20的长宽尺寸。
如图5和图6所示,在本申请实施例中,所述防抖可动部21包括载体主体211、载体延伸臂212以及摩擦板213。所述载体主体211形成用于安装所述感光组件30于其内的所述安置槽,其中,所述感光组件30被固定于所述安置槽内以使得所述感光组件30能够在所述芯片防抖可动部21的带动下进 行移动。
优选地,在本申请实施例中,所述载体主体211具有形成其侧壁的一开槽,以使得所述感光组件30的线路板31能够通过该开槽伸出并延伸至所述电子设备的主板。也就是,在本申请实施例中,所述载体主体211具有形成于其侧部的门,以通过所述门允许所述感光组件30的线路板31穿过并伸出所述防抖驱动组件20。
如图5和图6所示,在本申请实施例中,所述载体延伸臂212自所述载体主体211向外延伸,例如,所述载体延伸臂212一体地自所述载体主体211向外延伸。特别地,在本申请实施例中,所述载体延伸臂212与所述载体主体211的底面之间具有一定的高度差,也就是说,所述载体延伸臂212与所述载体主体211不在同一高度延伸。更明确地,在本申请实施例中,所述载体延伸臂212的高度高于所述载体主体211的高度,所述载体延伸臂212自所述载体主体211向上并向外延伸。这里,本申请中所指的“向上”表示指由像侧到物侧,“向外”表示远离光轴的方向。其中,具有高度差的所述载体延伸臂212与所述载体主体211与所述防抖固定部23相配合形成一沿Z轴方向的容置空间,所述容置空间可以用于安置所述防抖驱动部22,以使得所述摄像模组的结构更加紧凑。
如图5和图6所示,在本申请实施例中,所述摩擦板213设置于所述载体延伸臂212,例如,所述摩擦板213一体地形成于所述载体延伸臂212,当然所述摩擦板213与所述载体延伸臂212也可以具有分体式结构,例如,所述摩擦板213为单独的部件并通过黏着剂附着于所述载体延伸臂212。优选地,所述摩擦板213被设置于所述载体延伸臂212的朝向于所述防抖驱动部22的一侧,即,被设置于所述载体延伸臂212的下表面。相应地,在本申请实施例中,所述摩擦板213被夹持地设置于所述防抖可动部21与所述防抖驱动部22之间,以通过所述防抖驱动部22和所述预压力装置24使得所述防抖可动部21被摩擦地耦合于所述载体延伸臂212。应可以理解,所述摩擦板213的作用在于提高所述防抖驱动部22和所述防抖可动部21之间的摩擦力。
并且,如图5和图6所示,在本申请实施例中,所述载体延伸臂212具有分别形成于相对的两边的两个U型槽,其中,在所述防抖可动部21的安装过程中,可以通过该U型槽对所述防抖可动部21进行夹持,便于安装。
如图5至图7所示,在本申请一个具体的示例中,所述防抖固定部23包括相互扣合的上盖231和基底232,其中,所述上盖231与所述基底232之间形成一收容腔,所述收容腔用于将收容所述防抖可动部21、防抖驱动部22、预压力装置24、导引装置25及驱动基板26于其中,通过这样的方式,不仅可以保护所述防抖驱动组件20中的各个元件发生撞击损坏,也可以用于避免灰尘、脏污或杂散光进入所述防抖驱动组件20的内部。
更具体地,在该具体示例中,所述上盖231被套设于所述基底232的上方,并且所述上盖231具有与所述感光组件30相对应的开口,以使得经过物体反射的光线能够到达所述感光组件30。所述上盖231和基底232的材质可以为金属,例如冷轧碳素薄钢板(SPCC)或者不锈钢等导磁材料,不仅起到一定的导磁作用(即,加强磁场),而且能够有助于所述感光组件30的散热。应可以理解,在该具体示例中,所述上盖231与基底232均为定子,即在实现所述感光组件30的光学防抖功能时,所述上盖231与基底232保持不动,其中,所述光学镜头10固定设置于所述上盖231,并位于所述感光组件 30的感光路径上。
当所述上盖231与基底232均为金属材质时,所述上盖231与基底232的四角处需设置有缺口,与所述缺口相邻的边可以进行弯折,以使得所述上盖231一基底232能够嵌套固定。由于在本申请中,所述感光组件30设置于所述防抖可动部21的安置槽内,因此即使通过所述防抖固定部23的缺口进入的灰尘也并不会进入到所述感光组件30,进而不会对成像效果造成影响。
也就是说,在本申请实施例中,所述防抖固定部23具有收容腔,所述防抖可动部21被悬持于所述防抖固定部23的收容腔内。具体地,所述防抖固定部23包括基底232和与所述基底232相扣合的上盖231,所述收容腔形成于所述上盖231和所述基底232之间。并且,所述防抖可动部21与所述基底232之间具有间隙,所述防抖可动部21与所述上盖231之间具有间隙,通过这样的方式,所述防抖可动部21被悬持于所述防抖固定部23的收容腔内。
应注意到,在该具体示例中,所述上盖231的底面与所述防抖可动部21的载体延伸臂212的顶面之间具有一间隙,所述间隙可以用于容置所述导引装置25,以通过所述导引装置25使得所述防抖可动部21支撑与所述防抖固定部23的上盖231。所述基底232的底面与所述防抖可动部21的底面之间也具有一间隙,即所述防抖可动部21与所述防抖固定部23的上盖231和基底232都不直接接触,以减小所述防抖可动部21在移动过程中摩擦力的产生。
进一步地,如图8至图14所示,在本申请实施例中,所述防抖驱动部22设置于所述防抖可动部21与所述防抖固定部23之间,优选地,所述防抖驱动部22设置于所述防抖可动部21的载体延伸臂212与所述防抖固定部23的基底232之间。所述防抖驱动部22在被安装于所述防抖固定部23后,其与所述防抖可动部21摩擦接触,以通过所述防抖驱动部22驱动所述防抖可动部21在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转。应注意到,在本申请实施例中,所述防抖驱动部22被设置于所述防抖可动部21的载体主体211的侧部,即,所述防抖驱动部22被设置于所述载体延伸臂212和所述基底232所形成的容置空间内,以避免增加所述防抖驱动组件20的高度。
更具体地,在本申请实施例中,所述防抖驱动部22包括第一压电致动器221和第二压电致动器222,所述第一压电致动器221与第二压电致动器222被分别设置于所述防抖驱动组件20的相对的两侧。优选地,在本申请实施例中,所述第一压电致动器221和所述第二压电致动器222相互平行地布设于该感光组件30的相对的两侧,且所述第一压电致动器221和所述第二压电致动器222适于作动所述防抖可动部21和该感光组件30在X轴和Y轴所设定的XOY平面内移动或绕着垂直于所述X轴和所述Y轴的Z轴在所述XOY平面内旋转。
所述第一压电致动器221与所述第二压电致动器222具有相同的高度,以使得所述防抖可动部21设置于所述防抖驱动部22上不会产生倾斜,也就是,所述防抖可动部21被平稳地支持于所述第一压电致动器221和所述第二压电致动器222上。应可以理解,在本申请一些示例中,所述第一压电致动器221和所述第二压电致动器222的高度尺寸也不可不相等,但优选地,所述第一压电致动器221和所述第二压电致动器222所形成的安装面始终为平整表面,这样,所述防抖可动部21能被平稳地支持于所述第一压电致动器221和所述第二压电致动器222所形成的安装面上。
更具体地,在本申请实施例中,所述第一压电致动器221与所述第二压电致动器222沿X轴方向 或Y轴方向相对平行设置,即,所述第一压电致动器221和所述第二压电致动器222相对于该感光组件30以所述X轴或者所述Y轴为对称轴被对称地布置于该感光组件30的相对的两侧。
进一步地,在本申请实施例中,所述载体延伸臂212自所述载体主体211向外延伸,因此所述载体延伸臂212与所述基底232之间形成一容置空间,所述第一压电致动器221与所述第二压电致动器222分别被设置该容置空间内,并且所述第一压电致动器221和第二压电致动器222固定于所述基底232,并沿高度方向摩擦地耦接于设置于所述载体延伸臂212的下表面的所述摩擦板213。
在本申请实施例中,所述第一压电致动器221与所述第二压电致动器222被实施为同一种压电致动器。具体地,在本申请实施例中,所述压电致动器为行波式压电致动器,所述行波式压电致动器具有纳米级的步级精度,能够达到更极致的光学系统要求。并且,所述压电致动器推力较一般VCM马达(Voice coil Motor,音圈马达)推力大10倍,相对于一般VCM马达,所述压电致动器并不需要使用线圈磁铁等部件,避免了电磁干扰,降低可靠性风险。并且本申请中使用的压电致动器的移动分辨率为1nm,可达成超分0.5um高精度要求。所述压电致动器为一长方体结构,即在XOY平面上,所述压电致动器的截面为一长方形结构,包括沿长度方向的两条长边和沿宽度方向的两条短边。由于所述压电致动器本身的结构,所述压电致动器被相对平行地设置于感光组件30的两侧,即所述第一压电致动器221与所述第二压电致动器222以X轴或Y轴为对称轴相对平行地设置于所述防抖固定部23上。通过这种设置方式可以使得所述第一压电致动器221和所述第二压电致动器222保持更好的一致性,从而所述感光组件30在被驱动时能够保持平稳的移动。
如图9所示,所述压电致动器包括压电陶瓷板223和摩擦驱动部224,在给所述压电致动器提供电源激励后,所述压电致动器的压电陶瓷板223产生两种面型变化,从而带动所述摩擦驱动部224产生沿X轴方向和/或Y轴方向的单向偏摆往复运动,由于所述摩擦驱动部224与摩擦板213之间的摩擦接触,进而带动所述摩擦板213移动。
具体地,当所述压电致动器被一种电源激励后,所述压电陶瓷板223会产生沿其长度方向波浪形运动形态,所述摩擦部在压电陶瓷片带动下沿其长度方向发生偏摆运动,从而带动所述摩擦板213沿所述压电致动器的长度方向移动;当所述压电致动器被另一种电源激励后,所述压电陶瓷板223会产生沿其宽度方向蛇形运动形态,所述摩擦部在带动下沿其宽度方向发生偏摆运动,从而带动所述摩擦板213沿所述压电致动器的宽度方向移动。
在本申请的一示例中,所述压电致动器可以分别实现沿其长度方向或宽度方向的面型变化,也就是,所述压电致动器可选择沿其长度方向或者沿其宽度方向的面型变化。当所述压电致动器沿X轴方向设置,其长度方向为沿X轴方向,宽度方向为沿Y轴方向;当所述压电致动器沿Y轴方向设置,其长度方向为沿Y轴方向,宽度方向为沿X轴方向。相对于现有的压电马达仅能实现一个方向的驱动,本申请中的压电致动器可以产生不同的波形以进行X、Y方向运动,并且利用第一压电致动器221与第二压电致动器222的配合还能达成Z轴旋转运动。并且,本申请的所述压电致动器的高度为0.7mm~0.9mm,可隐藏于所述防抖驱动组件20中以降低所述防抖驱动组件20的高度。
相应地,在本申请实施例中,所述第一压电致动器221包括第一压电陶瓷板2211和第一摩擦驱动部2212。所述第一压电陶瓷板2211由非常小的压电陶瓷组成,在给所述第一压电陶瓷板2211提供电 源激励后,通过所述第一压电陶瓷板2211的逆压电效应,所述第一压电陶瓷板2211适于发生形变,从而所述第一压电陶瓷板2211上的第一摩擦驱动部2212随之运动。在本申请中,所述第一压电陶瓷板2211固定的设置于所述基底232,并且所述第一摩擦驱动部2212朝向所述防抖可动部21上的摩擦板213,并且所述第一摩擦驱动部2212与所述摩擦板213之间保持摩擦接触,以使得所述第一摩擦驱动部2212能够驱动所述摩擦板213发生移动。
具体的,在本申请的一示例中,所述第一摩擦驱动部2212位于所述摩擦板213的下方并与所述摩擦板213摩擦接触。优选地,在初始状态下,所述第一摩擦驱动部2212位于所述摩擦板213的中部位置,所述摩擦板213可以在所述防抖驱动部22的驱动下在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转移动。应可以理解,在本申请其他示例中,在初始状态下,所述第一摩擦驱动部2212也可以位于所述摩擦板213的其他位置,例如,位于所述摩擦板213的端部,对此,并不为本申请所局限。并且,更优选地,所述摩擦板213的面积大于等于所述第一压电致动器221的驱动行程。
相应地,所述第二压电致动器222包括第二压电陶瓷板2221和第二摩擦驱动部2222。所述第二压电陶瓷板2221由非常小的压电陶瓷组成,在给所述第二压电陶瓷板2221提供电源激励后,通过所述第二压电陶瓷板2221的逆压电效应,所述第二压电陶瓷板2221适于发生形变,从而所述第二压电陶瓷板2221上的第二摩擦驱动部2222随之运动。在本申请中,所述第二压电陶瓷板2221被固定地设置于所述基底232,并且所述第二摩擦驱动部2222朝向所述防抖可动部21上的摩擦板213,并且所述第二摩擦驱动部2222与所述摩擦板213之间保持摩擦接触,以使得所述第二摩擦驱动部2222能够驱动所述摩擦板213发生移动。
具体的,在本申请的一示例中,所述第二摩擦驱动部2222位于所述摩擦板213的下方,并与所述摩擦板213摩擦接触。优选地,在初始状态下,所述第二摩擦驱动部2222位于所述摩擦板213的中部位置,所述摩擦板213可以在所述防抖驱动部22的驱动下在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转移动。当然,在本申请其他示例中,在初始状态下,所述第二摩擦驱动部2222也可以位于所述摩擦板213的其他位置,例如,位于所述摩擦板213的端部,对此,并不为本申请所局限。更优选地,所述摩擦板213的面积大于等于所述第一压电致动器221的驱动行程。
进一步地,在本申请一个具体的示例中,所述第一压电致动器221与所述第二压电致动器222沿X轴方向相对平行地设置,即所述第一压电致动器221和第二压电致动器222的长度方向为沿X轴方向,所述第一压电致动器221和第二压电致动器222的宽度方向为沿Y轴方向。相应地,在该具体示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿长度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿X轴方向移动。当然,在该具体示例中,所述第一压电致动器221产生沿宽度方向的形变,所述第二压电致动器222产生沿宽度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿Y轴方向移动。
并且,在该具体示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿长度方向与之相反方向的形变(即+X方向和-X方向),所述防抖可动部21在第一压电致动器221与第二压电致动器222的驱动实现绕Z轴旋转运动。也就是说,在本申请中,所述第一压电 致动器221与所述第二压电致动器222能够相互配合以驱动所述防抖可动部21在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转,以实现所述感光组件30的平移防抖和/或旋转防抖。
应可以理解,由于所述第一压电致动器221和所述第二压电致动器222既可以产生沿长度方向的形变,又可以产生沿宽度方向的形变,因此仅一个所述防抖可动部21即可在所述第一压电致动器221和所述第二压电致动器222的驱动下实现XOY平面的平移防抖和绕Z轴方向的旋转防抖。
具体地,在本申请的一示例中,所述第一压电致动器221和第二压电致动器222先产生沿长度方向的形变再产生沿宽度方向的形变,所述防抖可动部21在所述第一压电致动器221与第二压电致动器222的驱动下先沿所述X轴方向移动,再沿所述Y轴方向移动,通过这样的方式使得所述防抖可动部21能够在XOY所在的平面内进行移动。特别地,在本申请实施例中,虽然所述第一压电致动器221和所述第二压电致动器222能够产生宽度或长度方向的形变以提供两个方向的驱动力,但值得一提的是,所述第一压电致动器221和所述第二压电致动器222所提供的驱动力仅限于长度方向和宽度方向,即,仅限于X轴方向和Y轴方向,因此,当需要驱动所述感光组件30沿着某个倾斜方向行进以进行光学防抖时,其必须先沿着所述X轴方向移动,而后在沿着所述Y轴方向移动(当然,也可以先沿着所述Y轴方向移动,而后沿着所述X轴方向移动)而不能直接沿着该倾斜方向进行移动,这也是其与传统的通过VCM马达来进行防抖的重要区别,如图17所示。
进一步地,所述第一压电致动器221产生沿所述X轴方向的正方向的形变,所述第二压电致动器222产生沿所述X轴方向的负方向的形变,即所述第一摩擦驱动部2212产生沿所述X轴方向的正方向的驱动力,所述第二摩擦驱动部2222产生沿所述X轴方向的负方向的驱动力,这样,所述防抖可动部21和所述感光组件30在第一压电致动器221与第二压电致动器222的驱动实现绕Z轴方向的旋转运动。
在本申请的另一示例中,所述第一压电致动器221和第二压电致动器222先产生沿宽度方向的形变,再产生沿长度方向的形变,所述防抖可动部21在所述第一压电致动器221与第二压电致动器222的驱动下先沿所述Y轴方向移动,再沿所述X轴方向进行移动,使得所述防抖可动部21能够在XOY所在的平面内进行移动。所述第一压电致动器221产生沿所述X轴方向的正方向的形变,所述第二压电致动器222产生沿所述X轴方向的负方向的形变,即所述第一摩擦驱动部2212产生沿所述X轴方向的正方向的驱动力,所述第二摩擦驱动部2222产生沿所述X轴方向的负方向的驱动力,这样,所述防抖可动部21和所述感光组件30在第一压电致动器221与第二压电致动器222的驱动实现绕Z轴方向的旋转运动。
也就是,在本申请实施例中,所述第一压电致动器221适于沿着所述X轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动,且所述第二压电致动器222适于沿着所述X轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的方向进行移动。并且,所述第一压电致动器221适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动,且所述第二压电致动器222适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部21 和该感光组件30沿着所述Y轴所设定的方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的方向进行移动。并且,所述第一压电致动器221适于沿着所述X轴所设定的第一方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的第一方向进行移动,且所述第二压电致动器222适于沿着所述X轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部21和该感光组件30沿着所述X轴所设定的第二方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动该感光组件30绕所述Z轴在所述XOY平面内进行旋转。还有,所述第一压电致动器221适于沿着所述Y轴所设定的第一方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的第一方向进行移动,且所述第二压电致动器222适于沿着所述Y轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部21和该感光组件30沿着所述Y轴所设定的第二方向进行移动,以通过所述第一压电致动器221和所述第二压电致动器222作动该感光组件30绕所述Z轴在所述XOY平面内进行旋转。
综上所述,在本申请中,所述防抖可动部21既可以先实现XOY平面的平移防抖,再实现绕Z轴方向的旋转防抖;也可以先现实绕Z轴方向的旋转防抖,再实现XOY平面的平移防抖。
进一步地,在本申请实施例中,所述防抖驱动部22沿高度方向被设置于所述防抖可动部21的下方,具体地,所述第一压电陶瓷板2211被设置于所述防抖固定部23,所述第一摩擦驱动部2212摩擦地耦接于所述防抖可动部21、所述第二压电陶瓷板2221被设置于所述防抖固定部23,所述第二摩擦驱动部2222摩擦地耦接于所述防抖可动部21。所述预压力装置24被夹持地固定于所述第一压电陶瓷板2211和所述基底232之间以及所述第二压电陶瓷板2221和所述基底232之间,以通过所述预压力装置24提供的预压力使得所述第一摩擦驱动部2212和所述第二摩擦驱动部2222保持与所述载体延伸臂212的摩擦板213摩擦接触。
在本申请中,所述第一压电致动器221和第二压电致动器222可以形成一自锁结构,即在停止施加电压后,所述第一压电致动器221和第二压电致动器222在所述预压力装置24的作用下将所述防抖可动部21保持在当前位置,而不会随着外部的晃动而造成位置改变,进而使得所述摄像模组的光学系统保持不变,进而避免了成像效果造成影响。也省去了在所述摄像模组中追加自锁装置,相对地减小了所述摄像模组的尺寸。由于第一压电致动器221和第二压电致动器222形成的自锁结构,因此无需保持压电致动器激活以保持其位置。
如图11和图14所示,在所述防抖驱动组件20中,所述预压力装置24提供所述防抖驱动部22和所述防抖可动部21之间的预压力,以使得所述防抖驱动部22的摩擦驱动部224能够可摩擦地耦接于所述防抖可动部21,以通过摩擦来驱动所述防抖可动部21沿着驱动的方向移动。
具体地,如图11和图14所示,所述预压力装置24包括第一弹性元件241和第二弹性元件242。所述第一弹性元件241设置于所述第一压电致动器221的第一压电陶瓷板2211与所述基底232之间,以通过所述第一弹性元件241的弹力提供所述第一压电致动器221被夹持地设置于所述防抖可动部21的载体延伸臂212与所述防抖固定部23的基底232之间,即,使得所述第一压电致动器221的第一摩擦驱动部2212抵触与所述防抖可动部21的载体延伸臂212,通过这样的方式,所述第一压电致动器 221被摩擦地耦合于所述防抖可动部21。所述第二弹性元件242设置于所述第二压电致动器222的第二压电陶瓷板2221与所述基底232之间,以通过所述第二弹性元件242的弹力提供所述第二压电致动器222被夹持地设置于所述防抖可动部21的载体延伸臂212与所述防抖固定部23的基底232之间,即,使得所述第二压电致动器222的第二摩擦驱动部2222抵触与所述防抖可动部21的载体延伸臂212,通过这样的方式,所述第二压电致动器222被摩擦地耦合于所述防抖可动部21。
在本申请一个具体示例中,所述预压力装置24被实施为具有弹性的黏着剂,也就是,所述第一弹性元件241和所述第二弹性元件242被实施为固化后具有弹性的胶水。相应地,在安装过程中,可在所述基底232的内底面和所述第一压电陶瓷板2211以及在所述基底232的内底面和所述第二压电陶瓷板2221之间分别施加一层厚度为10um至50um的黏着剂,以在所述黏着剂固化成型后形成所述第一弹性元件241和所述第二弹性元件242。也就是,所述预压力装置24的第一弹性元件241和所述第二弹性元件242在提供预压力的同时,还能够使得所述防抖驱动部22被固定于所述基底232的内侧壁的底面。
优选地,所述预压力装置24具有相对较高的平整度,即,在施加所述黏着剂以形成所述第一弹性元件241和所述第二弹性元件242时,尽可能地保证所施加的黏着剂具有相对较高的平整度且均匀度,从而使得所述防抖驱动部22能够平整地被固定于所述基底232,进而提升所述防抖驱动部22的稳定性。当然,在本申请其他示例中,所述预压力装置24的第一弹性元件241和第二弹性元件242也可以被实施为材料特性本身即存在弹性的橡胶,或者是由于形状而具有弹性的弹簧;也可以是具有粘性的弹性材质,例如粘合剂(硅胶、UV胶、热固胶、UV热固胶等)。
应可以理解,在该实施例中,所述预压力装置24被设置于所述基底232,所述预压力装置24产生沿Z轴方向向上的预压力,所述预压力能够保持所述防抖驱动部22的摩擦驱动部224与所述防抖可动部21的摩擦板213保持摩擦接触,并且,所述预压力还能够保持所述导引装置25被夹持于所述上盖231与所述防抖可动部21的载体延伸臂212之间,其中,所述预压力方向与所述驱动力的方向垂直。
如图12至图14所示,为了提高所述摄像模组在光学防抖过程中运动的稳定性,提高成像质量,在所述上盖231与防抖可动部21之间设置导引装置25,以在进行光学防抖时使得所述防抖可动部21相对于所述防抖固定部23移动的过程中始终对所述防抖可动部21形成支撑,使其能够平稳的滑动。也就是,在本申请实施例中,所述防抖驱动组件20进一步包括设置于所述载体延伸臂212的上表面和所述上盖231之间的导引装置25,所述导引装置25适于导引所述防抖可动部21在所述X轴和所述Y轴所设定的所述XOY平面内移动。
在本申请一个具体的示例中,所述导引装置25包括设置于所述防抖可动部21的凹槽241以及设置于所述凹槽241内的滚珠242,其中,如前所述,在所述预压力装置24的作用下,所述导引装置25能够在所述防抖可动部21相对所述防抖固定部23移动的过程中始终与所述防抖可动部21保持接触并导引所述防抖可动部21的移动,以使得所述防抖可动部21能够平稳的移动。应可以理解,由于所述滚珠242置于所述凹槽241内,滚珠242的运动轨迹被限制在所述凹槽241内,滚珠242可以在凹槽241内沿垂直于所述光轴所在的平面内移动,以为所述防抖可动部21的移动提供导向。
具体地,在该具体示例中,所述凹槽241凹陷地形成于所述防抖可动部21的载体延伸臂212,并且所述凹槽241的开口朝向于所述防抖固定部23的上盖231。也就是说,所述上盖231面对所述滚珠242的部分为一平面结构,所述载体延伸臂212面对所述滚珠242的部分为一凹槽241结构,即所述滚珠242本容置于所述载体延伸臂212的凹槽241内,所述滚珠242仅可以在所述凹槽241内移动,并且所述凹槽241对所述滚珠242的移动进行限位,防止所述滚珠242脱离其移动范围。在本申请中,所述滚珠242为陶瓷材质。特别地,在该具体示例中,所述凹槽241的深度小于等于所述滚珠242的直径,以使得所述滚珠242的至少一部分可以裸露于所述凹槽241的顶面,以使得所述滚珠242能够与所述防抖可动部21的载体延伸臂212摩擦接触。
在本申请实施例中,所述导引装置25的数量至少为3,即,所述防抖驱动组件20至少包括3个所述导引装置25。优选地,在本申请实施例中,所述导引装置25的数量为4,其可分别位于所述防抖驱动组件20的四角处,以为所述防抖可动部21提供平稳的支撑,并且可以充分利用所述防抖驱动组件20空余的角落空间,使得所述防抖驱动组件20的结构更加紧凑。
值得一提的是,在本申请的其他示例中,所述导引装置25也可以为滑块-滑槽结构,本申请对此不做限制。并且,在本申请的其他示例中,也可以在所述上盖231与所述防抖可动部21的上表面之间设置具有方向的轨道,将所述滚珠242设置于所述轨道内,所述滚珠242的运动轨迹被限制在该轨道内,因此能够在感光组件30移动的过程中起到导向的作用。并且,由于滚珠242能够通过滚动摩擦代替滑动摩擦,可以进一步减小所述防抖可动部21与所述上盖231间的摩擦力。
例如,在本申请一个具体的示例中,可在所述上盖231的底面设置一沿x轴方向的轨道,在所述载体延伸臂212的上表面设置一沿y轴方向的轨道(底面和上表面是指沿光轴方向,从感光芯片32到光学镜头10的方向),所述x方向的轨道与y方向的轨道相对设置形成一“十”字形的容纳腔,将滚珠242容纳其中。优选地,所述滚珠242和容纳腔数量为4,以使得所述防抖可动部21能够保持稳定。在进行光学防抖时,通过滚珠242和轨道作为导向机构,可以为感光组件30提供更大的OIS行程。当然,在本申请的其他实施方式中,也可以在所述载体延伸臂212上表面既设置沿x轴方向的轨道也设置沿y轴方向的轨道,并且两个同侧的轨道设置于载体延伸臂212的同一侧。与之相对的,在所述上盖231的下表面设置与所述载体延伸臂212上表面方向不同的轨道,即在所述上盖231上与载体延伸臂212上x轴方向轨道相对的位置设置y轴方向轨道,在所述上盖231上与所述载体延伸臂212y轴方向轨道相对的位置设置x轴方向轨道,以避免出现干涉。
值得一提的是,所述导引装置25设置于所述防抖可动部21与所述上盖231之间,所述防抖驱动部22设置于所述防抖可动部21与所述基底232之间,并且所述导引装置25设置于所述防抖可动部21的上方,所述防抖驱动部22设置于所述防抖可动部21的下方,也就是说所述防抖可动部21由所述导引装置25和所述防抖驱动部22夹持于所述上盖231与基底232形成的容置空间内。
应注意到,在本申请实施例中,所述导引装置25的所述滚珠242被夹持于所述防抖可动部21和所述防抖固定部23的上盖231之间,因此,所述滚珠242也能够提供一个使得所述防抖可动部21向下以使得所述防抖可动部21摩擦地耦接于所述防抖驱动部22的预压力。也就是,在本申请实施例中,所述导引装置25的滚珠242在实质上也发挥着预压力装置24的作用。也就是说所述滚珠242既 可以作为导引装置25为所述防抖可动部21提供支撑,也可以作为预压力装置24为所述防抖驱动部22提供需要的预压力。
具体地,在本申请实施例中,所述第一压电陶瓷板2211与所述第二压电陶瓷板2221分别相对平行地固定于所述基底232的内底表面,所述第一摩擦驱动部2212与所述第二摩擦驱动部2222固定于所述第一压电陶瓷板2211与第二压电陶瓷板2221上并朝向所述防抖可动部21,并且与所述防抖可动部21的摩擦板213保持摩擦接触。即沿高度方向上,所述第一压电致动器221与所述第二压电致动器222分别设置于所述防抖可动部21的下方,所述滚珠242设置于所述防抖可动部21与所述上盖231之间,即所述滚珠242设置于所述防抖可动部21的上方。也就是说,所述设置模组沿Z轴方向由上至下的顺序为上盖231、滚珠242、防抖可动部21、第一压电致动器221和第二压电致动器222、基底232,所述防抖可动部21被夹持与所述滚珠242与所述第一压电致动器221和第二压电致动器222之间,所述滚珠242可以产生向下的预压力,通过所述预压力使得所述第一压电致动器221和所述第二压电致动器222能够保持于所述防抖可动部21的摩擦板213摩擦接触。
在本申请中,所述第一摩擦驱动部2212、第二摩擦驱动部2222分别与所述载体延伸臂212相对的两边摩擦接触,所述滚珠242分别与所述上盖231和载体延伸臂212的四角摩擦接触,所述摩擦驱动部与所述摩擦板213之间的摩擦是主动摩擦,所述滚珠242与所述上盖231之间的摩擦为被动摩擦,所述第一摩擦驱动部2212、第二摩擦驱动部2222与所述载体延伸臂212的摩擦板213之间的摩擦力大于所述滚珠242与所述上盖231之间的摩擦力。也就是,在所述第一压电致动器221与所述第二压电致动器222的驱动下,所述第一摩擦驱动部2212、第二摩擦驱动部2222与所述载体延伸臂212的摩擦板213之间产生一较大的摩擦力,进而驱动所述防抖可动部21发生移动。在所述防抖可动部21的移动下,所述滚珠242与所述上盖231之间产生一较小的摩擦力,以避免对所述防抖可动部21的移动产生阻碍,进而影响防抖效果。
进一步地,如图5至图15所示,在本申请实施例中,所述驱动基板26设置于所述防抖驱动部22与所述基底232之间。具体地,如图5所示,所述基底232的底面设置有一组定位点2321,所述驱动基板26通过所述基底232的定位点2321被固定于所述基底232上。
所述驱动基板26包括一连接端263和至少一导电端。优选地,所述导电端具有分体式结构且所述导电端的数量为2,即,所述至少一导电端包括第一导电端261和第二导电端262。所述第一压电致动器221的所述第一压电陶瓷板2211与所述第二压电致动器222的所述第二压电陶瓷板2221被分别设置并电连接于所述驱动基板26的所述第一导电端261和所述第二导电端262上,以使得所述第一压电致动器221和所述第二压电致动器222通过所述驱动基板26实现电路导通。也就是说,所述第一导电端261与所述第一压电致动器221同侧设置,所述第二导电端262与所述第二压电致动器222同侧设置。所述连接端263设置于所述防抖驱动组件20不设置所述第一压电致动器221与第二压电致动器222的一侧,例如,所述连接端263设置于所述第一导电端261和所述第二导电端262之间,并且所述连接端263电连接所述第一导电端261和所述第二导电端262,并通过所述连接端263将所述第一导电端261和所述第二导电端262与电子设备主板实现电路导通。在本申请中,将所述驱动基板26与所述线路板31分别与所述电子设备主板固定连接并实现电路导通,以减少所述驱动基板26对所述线 路板31移动产生的阻力。
当然,在本申请的其他示例中,所述驱动基板26可以设置于所述基底232与所述预压力装置24之间,所述驱动基板26也可以设置于所述预压力装置24与所述防抖驱动部22之间。也就是说,所述驱动基板26可以直接设置于所述基底232上,也可以通过所述预压力装置24间接地设置于所述基底232上。
特别地,在本申请实施例中,所述基底232具有形成于其侧壁的一开槽,所述连接端263通过该开槽伸出,并实现与电子设备主板的电路导通。优选的,所述线路板31与所述连接端263从所述防抖驱动组件20的同一侧面延伸,即所述基底232的开槽与所述防抖可动部21的开口设置为同一侧,以使得所述线路板31与所述连接端263从所述防抖驱动组件20的同一侧电连接于电子设备的主板。所述防抖可动部21设置于所述基底232的上方,所述线路板31设置于所述驱动基板26的上方,所述线路板31与所述驱动基板26的连接端263沿高度方向具有一定间隙,所述间隙可以使得所述线路板31在移动过程中不会与所述驱动基板26接触,进而影响光学防抖的效果。所述间隙的范围为0.1mm-0.15mm。
当然,在本申请的其他示例中,也可以将所述驱动基板26与所述线路板31从所述防抖驱动组件20的不同侧延伸与电子设备的主板电连接,即所述基底232与所述防抖可动部21侧壁的开口可以设置于不同侧,如相对侧或相邻侧,以使得所述线路板31的移动不会受到影响。
在本申请的其他示例中,也可以将所述防抖驱动部22与所述导引装置25的位置进行调换,即所述防抖驱动部22设置于所述上盖231与所述防抖可动部21之间,所述导引装置25设置于所述基底232与所述防抖可动部21之间。而所述导引装置25设置于所述基底232与所述防抖可动部21之间,所述导引装置25设置于所述载体延伸臂212的下方,并且所述载体延伸臂212上设置有开口朝向所述基底232的凹槽241,所述滚珠242设置于所述凹槽241内,通过所述滚珠242将所述防抖可动部21承载于所述基底232上。所述载体延伸臂212被夹持与所述滚珠242与所述摩擦驱动部之间,使得所述防抖可动部21能够在所述防抖驱动部22的驱动下实现XOY平面防抖和绕Z轴防抖。进一步地,所述驱动基板26设置于所述上盖231与所述压电陶瓷板之间,用于将所述防抖驱动部22实现与电子设备主板的电路导通。
图15图示了根据本申请实施例的所述防抖驱动组件20的一个变形实施例,其中,如图15所示,与上述实施例不同的是,所述第一压电致动器221与所述第二压电致动器222也可以沿Y轴方向相对平行地设置,即所述第一压电致动器221与第二压电致动器222的长度方向为沿Y轴方向,即所述第一压电致动器221与第二压电致动器222的宽度方向为沿Y轴方向。
在本申请的一示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿长度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿Y轴方向移动;在本申请的另一示例中,所述第一压电致动器221产生沿宽度方向的形变,所述第二压电致动器222产生沿宽度方向的形变,所述防抖可动部21在所述第一压电致动器221、第二压电致动器222的共同驱动下沿X轴方向移动;在本申请的另一示例中,所述第一压电致动器221和第二压电致动器222先产生沿长度方向的形变,再产生沿宽度方向的形变,所述防抖可动 部21在所述第一压电致动器221与第二压电致动器222的驱动下先沿Y轴方向移动,再沿X轴方向移动,即所述防抖可动部21能够在XOY所在的平面内移动;在本申请的另一示例中,所述第一压电致动器221产生沿长度方向的形变,所述第二压电致动器222产生沿长度方向与之相反方向的形变(即+Y方向和-Y方向),所述防抖可动部21在第一压电致动器221与第二压电致动器222的驱动实现绕Z轴旋转运动。也就是说,在本申请中,所述第一压电致动器221与所述第二压电致动器222能够相互配合以驱动所述防抖可动部21在X轴方向和Y轴方向上平移和/或绕Z轴方向旋转,以实现所述感光组件30的平移防抖和/或旋转防抖。
综上,基于本申请实施例的所述摄像模组被阐明,其中,所述摄像模组采用新型的压电致动器作为驱动元件以不仅能够提供足够大的驱动力,而且,能够提供精度更高和行程更长的驱动性能,以满足所述摄像模组的光学性能调整的需求,例如,光学防抖的需求。
示意性摄像模组的防抖方法
相应地,根据本申请的另一方面,如图16所示,还提供了一种摄像模组的防抖方法,其包括步骤:S110,同时驱动防抖驱动部的第一压电致动器和第二压电致动器以作动安装于防抖可动部的感光组件先沿第一方向移动;以及,S120,同时驱动防抖驱动部的第一压电致动器和第二压电致动器以作动安装于防抖可动部的感光组件先沿第一方向移动。
如前所述,在本申请实施例中,所述第一压电致动器和第二压电致动器为行波式压电致动器,其能够发生两种面型的形变并产生两种方向的驱动力。具体地,所述第一压电致动器和所述第二压电致动器可以沿着其长度方向形变以产生沿着长度方向的驱动力,或者,沿着其宽度方向形变以产生沿着宽度方向的驱动力。
但是,虽然所述第一压电致动器和所述第二压电致动器能够产生两个方向的驱动力,但是,所述第一压电致动器和所述第二压电致动器所提供的驱动力仅限于长度方向和宽度方向,即,仅限于X轴方向和Y轴方向,因此,当需要驱动所述感光组件沿着某个倾斜方向行进以进行光学防抖时,其必须先沿着所述X轴方向移动,而后在沿着所述Y轴方向移动(当然,也可以先沿着所述Y轴方向移动,而后沿着所述X轴方向移动)而不能直接沿着该倾斜方向进行移动,这也是其与传统的通过VCM马达来进行防抖的重要区别,如图17所示。
更具体地,在根据本申请的所述摄像模组的防抖方法中,所述第一压电致动器和所述第二压电致动器相互平行地布设于所述感光组件的相对的两侧。在本申请一个具体的示例中,所述第一压电致动器和所述第二压电致动器以所述X轴为对称性相互平行地布设于所述感光组件的相对的两侧,且所述第一方向为X轴方向、所述第二方向为Y轴方向。具体地,述第一压电致动器和所述第二压电致动器具有长方形结构,其中,所述第一压电致动器和所述第二压电致动器的长度方向为所述X轴方向,所述第一压电致动器和所述第二压电致动器的宽度方向为所述Y轴方向。
相应地,在该具体示例中,步骤S110,同时驱动防抖驱动部的第一压电致动器和第二压电致动器以作动安装于防抖可动部的感光组件先沿第一方向移动,包括:驱动所述第一压电致动器沿着其长度方向形变以作动所述防抖可动部沿着所述第一方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第一方向移动;以及,驱动所述第二压电致动器沿着其长度方向形变以作动所述防抖可动部沿 着所述第一方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第一方向移动。
相应地,在该具体示例中,步骤S120,同时驱动所述防抖驱动部的第一压电致动器和第二压电致动器以作动安装于所述防抖可动部的所述感光组件再沿第二方向移动,包括:驱动所述第一压电致动器沿着其宽度方向形变以作动所述防抖可动部沿着所述第二方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第二方向移动;以及,驱动所述第二压电致动器沿着其宽度方向形变以作动所述防抖可动部沿着所述第二方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第二方向移动。
在本申请另外一个具体的示例中,所述第一压电致动器和所述第二压电致动器以所述Y轴为对称性相互平行地布设于所述感光组件的相对的两侧,且所述第一方向为Y轴方向、所述第二方向为X轴方向。具体地,所述第一压电致动器和所述第二压电致动器具有长方形结构,其中,所述第一压电致动器和所述第二压电致动器的长度方向为所述Y轴方向,所述第一压电致动器和所述第二压电致动器的宽度方向为所述X轴方向。
相应地,在该具体示例中,步骤S110,同时驱动防抖驱动部的第一压电致动器和第二压电致动器以作动安装于防抖可动部的感光组件先沿第一方向移动,包括:驱动所述第一压电致动器沿着其宽度方向形变以作动所述防抖可动部沿着所述第一方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第一方向移动;以及,驱动所述第二压电致动器沿着其宽度方向形变以作动所述防抖可动部沿着所述第一方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第一方向移动。
相应地,在该具体示例中,步骤S120,同时驱动所述防抖驱动部的第一压电致动器和第二压电致动器以作动安装于所述防抖可动部的所述感光组件再沿第二方向移动,包括:驱动所述第一压电致动器沿着其长度方向形变以作动所述防抖可动部沿着所述第二方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第二方向移动;以及,驱动所述第二压电致动器沿着其长度方向形变以作动所述防抖可动部沿着所述第二方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第二方向移动。
示意性摄像模组的防抖方法
根据本申请的另一方面,如图18所示,还提供了一种摄像模组的防抖方法,其包括:S210,驱动防抖驱动部的第一压电致动器以作动安装于防抖可动部的感光组件沿第一方向移动;以及,S220,同时驱动所述防抖驱动部的第二压电致动器以作动安装于所述防抖可动部的所述感光组件沿第二方向移动,所述第一方向与所述第二方向相互平行且相反,以通过所述第一压电致动器和所述第二压电致动器驱动所述感光组件进行旋转。
在本申请实施例中,所述第一压电致动器和第二压电致动器为行波式压电致动器,其能够发生两种面型的形变并产生两种方向的驱动力。具体地,所述第一压电致动器和所述第二压电致动器可以沿着其长度方向形变以产生沿着长度方向的驱动力,或者,沿着其宽度方向形变以产生沿着宽度方向的驱动力。
更具体地,在根据本申请的所述摄像模组的防抖方法中,所述第一压电致动器和所述第二压电致动器相互平行地布设于所述感光组件的相对的两侧。在本申请一个具体的示例中,所述第一压电致动 器和所述第二压电致动器以所述X轴为对称性相互平行地布设于所述感光组件的相对的两侧,优选地,所述第一压电致动器和所述第二压电致动器以所述X轴作为对称轴对称地布置于所述感光组件的相对的两侧。
相应地,在该具体示例中,步骤S210,驱动防抖驱动部的第一压电致动器以作动安装于防抖可动部的感光组件沿第一方向移动,包括:驱动防抖驱动部的第一压电致动器以作动安装于防抖可动部的感光组件沿所述第一方向为X轴方向的正方向移动;以及,步骤S220,同时驱动所述防抖驱动部的第二压电致动器以作动安装于所述防抖可动部的所述感光组件沿第二方向移动,包括:驱动防抖驱动部的第一压电致动器以作动安装于防抖可动部的感光组件沿所述第一方向为X轴方向的负方向移动,通过这样的方式,驱动所述感光组件在所述XOY平面内顺时针旋转。也就是,在该具体示例中,所述第一方向为X轴方向的正方向,所述第二方向为X轴方向的负方向,如图19所示。
当然,在该具体示例中,所述第一方向为X轴方向的负方向,所述第二方向为X轴方向的正方向,通过这样的方向配置,所述感光组件被驱动在所述XOY平面内逆时针旋转,如图19所示。
在本申请的另一具体示例中,所述第一压电致动器和所述第二压电致动器以所述Y轴为对称性相互平行地布设于所述感光组件的相对的两侧,优选地,所述第一压电致动器和所述第二压电致动器以所述Y轴作为对称轴对称地布置于所述感光组件的相对的两侧。
在本申请实施例中,所述第一压电致动器和所述第二压电致动器具有长方形结构。并且,在该具体示例中,如图19所示,所述第一压电致动器和所述第二压电致动器的长度方向与所述X轴方向平行。相应地,在该具体示例中,步骤:驱动防抖驱动部的第一压电致动器以作动安装于防抖可动部的感光组件沿第一方向移动,包括:驱动所述第一压电致动器沿着其长度方向形变以作动所述防抖可动部沿着所述第一方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第一方向移动,以及,步骤:同时驱动所述防抖驱动部的第二压电致动器以作动安装于所述防抖可动部的所述感光组件沿第二方向移动,包括:同时驱动所述第二压电致动器沿着其长度方向形变以作动所述防抖可动部沿着所述第二方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第二方向移动。
相应地,在该具体示例中,步骤S210,驱动防抖驱动部的第一压电致动器以作动安装于防抖可动部的感光组件沿第一方向移动,包括:驱动防抖驱动部的第一压电致动器以作动安装于防抖可动部的感光组件沿所述第一方向为Y轴方向的正方向移动;以及,步骤S220,同时驱动所述防抖驱动部的第二压电致动器以作动安装于所述防抖可动部的所述感光组件沿第二方向移动,包括:驱动防抖驱动部的第一压电致动器以作动安装于防抖可动部的感光组件沿所述第一方向为Y轴方向的负方向移动,通过这样的方式,驱动所述感光组件在所述XOY平面内顺时针旋转。也就是,在该具体示例中,所述第一方向为Y轴方向的正方向,所述第二方向为Y轴方向的负方向,如图20所示。
当然,在该具体示例中,所述第一方向为Y轴方向的负方向,所述第二方向为Y轴方向的正方向,通过这样的方向配置,所述感光组件被驱动在所述XOY平面内逆时针旋转,如图20所示。
在本申请实施例中,所述第一压电致动器和所述第二压电致动器具有长方形结构。并且,在该具体示例中,如图20所示,所述第一压电致动器和所述第二压电致动器的长度方向与所述Y轴方向平行。相应地,在该具体示例中,步骤:驱动防抖驱动部的第一压电致动器以作动安装于防抖可动部的 感光组件沿第一方向移动,包括:驱动所述第一压电致动器沿着其宽度方向形变以作动所述防抖可动部沿着所述第一方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第一方向移动;以及,步骤:同时驱动所述防抖驱动部的第二压电致动器以作动安装于所述防抖可动部的所述感光组件沿第二方向移动,包括:同时驱动所述第二压电致动器沿着其宽度方向形变以作动所述防抖可动部沿着所述第二方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第二方向移动。
综上,基于本申请实施例的摄像模组的防抖方法被阐明,其中,所述摄像模组通过具有特殊驱动特性的第一压电致动器和第二压电致动器并配合一个防抖可动部实现所述摄像模组在多个方向上的光学防抖。并且,所述摄像模组的防抖方法能够通过具有特殊驱动特性的第一压电致动器和第二压电致动器并配合一个防抖可动部实现所述摄像模组在XOY平面内的旋转防抖。
如图69至图70所示,根据本申请的一些实施例的摄像模组100a被实施为潜望式摄像模组,其包括变焦镜头组10a、驱动组件20a、感光组件30a和光转折元件40a。包括变焦镜头组10a在后面的说明中也简称为镜头。所述光转折元件40a,用于接收来自被摄目标的成像光线,并将该成像光线转折至所述变焦镜头组10a。所述变焦镜头组10a对应于所述光转折元件40a,用于接收来自所述光转折元件40a的成像光线以该成像光线进行汇聚,所述变焦镜头组10a设置于所述感光组件30a的感光路径上。所述感光组件30a对应于所述变焦镜头组10a,用于接收来自所述变焦镜头组10a的成像光线并进行成像。
在本申请的一些实施例中,所述光转折元件40a被配置为将来自被摄目标的成像光线进行90°的转折,以使得所述可变焦摄像模组100a的整体高度尺寸可得以缩减。这里,考虑到制造公差,在实际工作过程中,所述光转折元件40a对成像光线进行转折的角度可能存在1°以内的误差,对此,本领域普通技术人员应可以理解。
在本申请的具体示例中,所述光转折元件40a可被实施为反射镜(例如平面反射镜)或者光转折棱镜(例如三棱镜)。例如,当所述光转折元件40a被实施为光转折棱镜时,所述光转折棱镜的光入射面与其光出射面相互垂直且所述光转折棱镜的光反射面与所述光入射面和所述光出射面成45°角倾斜,这样,当成像光线以垂直于所述光入射面的方式进入所述光转折棱镜后,该成像光线能够在所述光反射面处发生90°转折,以垂直于所述光出射面的方式从所述光出射面输出。
当然,在本申请的其他实施例中,所述光转折元件40a还可以被实施为其他类型的光学元件,对此,并限于此实施例。并且,在本申请的一些实施例中,所述可变焦摄像模组100a还可以包括更多数量的光转折元件40a,其中一个原因在于:引入所述光转折元件40a的一个作用为:对成像光线进行转折,以对具有较长光学总长(TTL:Total Track Length)的所述可变焦摄像模组100a的光学系统能够进行结构维度上的折叠。相应地,当所述可变焦摄像模组100a的光学总长(TTL)过长时,可设置更多数量的光转折元件40a,以满足所述可变焦摄像模组100a的尺寸要求,例如可以设置所述光转折元件40a于所述可变焦摄像模组100a的像侧或者所述变焦镜头组10a中任意两个透镜之间。
如图69至图70所示,在本申请的一些实施例中,所述变焦镜头组10a包括固定群组11a和可调群组。在此可调群组例如包括变焦群组12a和对焦群组13a。显然,可调群组可以包括其他需要调节 的镜头群组,其数量和类型可以根据需要设置,而不限于在此的示例。例如,可调群组可以包括仅仅一个变焦群组12a,仅仅一个对焦群组13a,或者对焦群组13a和变焦群组12a的任意数量组合。可选地,给每个可调镜头组设置单独的驱动载体和驱动元件,由此实现每个镜头群组彼此独立地调整。
需要指出,图69至图70中的虚线表示光束在摄像模组100a中传播的光轴。驱动载体用于承载镜头的可调群组,因此能够驱动沿着光轴进行调整和移动。需要指出,这里调整方向、驱动方向和光轴方向是重合的。在后面的说明中,沿着光轴方向、沿着驱动方向也因此称为沿着调整方向,即驱动载体的调整方向作为方位基准与光轴是相同的。出于同样原因,驱动载体的几何轴线也与光轴重合,并与调整方向也是重合的。在下文中,使用这些术语表述的方向在技术意义上是等同的,除非特别指出。
所述固定群组11a包括第一镜筒111a和被容置于所述第一镜筒111a内的至少一光学透镜112a。在本申请的一些实施例中,所述固定群组11a适于被固定于所述驱动组件20a中非移动部分,即所述固定群组11a在所述变焦镜头组10a中的位置保持恒定,所述固定群组11a在所述可变焦摄像模组100a在实现光学对焦和/或光学变焦功能时并不发生位置的移动。值得一提的是,在本申请的其他实施例中,所述固定群组11a也可以不设有所述第一镜筒111a,其仅包括至少一光学透镜112a,例如,其仅包括相互嵌合的多片光学透镜112a。也就是,在申请其他实施例中,所述固定群组111a可被实施为“裸镜头”。所述固定群组11a的数量至少为一。
所述变焦群组12a包括第二镜筒121a和被容置于所述第二镜筒121a内的至少一光学透镜122a,其中,所述变焦群组12a适于被所述驱动组件20a所驱动以沿着所述变焦镜头组10a所设定的光轴方向上进行移动,从而实现所述可变焦摄像模组100a的光学变焦功能,以使得所述可变焦摄像模组100a能够实现对不同距离的被摄目标的清晰拍摄。值得一提的是,在本申请的其他实施例中,所述变焦群组12a也可以不设有所述第二镜筒121a,其仅包括至少一光学透镜122a,例如,其仅包括相互嵌合的多片光学透镜122a。也就是,在申请其他实施例中,所述变焦群组12a也可被实施为“裸镜头”。所述变焦群组12a的数量至少为一。
所述对焦群组13a包括第三镜筒131a和被容置于所述第三镜筒131a内的至少一光学透镜132a,其中,所述对焦群组13a适于被所述驱动组件20a所驱动以沿着所述变焦镜头组10a所设定的光轴方向上进行移动,从而实现所述可变焦摄像模组100a的对焦功能。更明确地,通过驱动所述对焦群组13a所实现的光学对焦能够补偿因移动所述变焦群组12a而导致的焦点偏移,从而补偿所述可变焦摄像模组100a的成像性能,使得其成像质量满足预设要求。值得一提的是,在本申请的其他实施例中,所述对焦群组13a也可以不设有所述第三镜筒131a,其仅包括至少一光学透镜132a,例如,其仅包括相互嵌合的多片光学透镜132a。也就是,在申请其他实施例中,所述对焦群组13a也可被实施为“裸镜头”。所述对焦群组13a的数量至少为一。
在本申请的一些实施例中,优选地,所述固定群组11a、变焦群组12a、对焦群组13a沿所述变焦镜头组10a所设置的光轴方向依次设置(也就是,在所述变焦镜头组10a中,所述变焦群组12a位于所述固定群组11a和所述对焦群组13a之间),即来自所述光转折元件40a的成像光线在穿过所述变焦镜头组10a时,其将依次透过所述固定群组11a、再透过所述变焦群组12a,然后,再穿过所述对焦群 组13a。所述变焦群组12a与对焦群组13a可以在所述驱动组件20a的驱动下相对于所述固定群组11a的位置分别进行调整,从而实现所述可变焦摄像模组100a的光学性能的调整,包括但不限于光学对焦和光学变焦功能。当然,在本申请的其他实施例中,所述固定群组1111a、变焦群组12a及对焦群组13a之间的相对位置关系可以根据所述可变焦摄像模组100a的光学设计要求和结构设计要求进行调整,例如:所述固定群组11a、对焦群组13a、变焦群组12a沿所述变焦镜头组10a所设置的光轴方向依次设置,即所述对焦群组13a设置于所述固定群组11a与所述变焦群组12a之间。或者,所述变焦群组12a、固定群组11a、对焦群组13a沿所述变焦镜头组10a所设置的光轴方向依次设置,即所述固定群组11a设置于所述对焦群组13a与所述变焦群组12a之间。但特别地,在本申请的一些实施例中,考虑到所述可变焦摄像模组100a的结构设计,优选地,所述对焦群组13a和所述变焦群组12a相邻地设置。也就是,根据本申请的一些实施例的所述变焦镜头组10a中各个部分的位置,优选地被配置为:所述变焦群组12a位于所述固定群组11a和所述对焦群组13a之间,或者,所述对焦群组13a位于所述固定群组11a和所述变焦群组12a之间。应可以理解,所述变焦群组12a和所述对焦群组13a是所述变焦镜头组10a中需要移动的部分,因此,将所述对焦群组13a和所述变焦群组12a相邻地设置,这样的位置设定有利于布置所述驱动组件20a关于此部分将在所述驱动组件20a的具体描述中展开。
还值得一提的是,在如图70所示的实施例中,虽然以所述变焦镜头组10a为示例,包括一个所述固定群组11a、一个所述变焦群组12a和一个所述对焦群组13a,但是,本领域普通技术人员应知晓,在本申请的其他实施例中,所述固定群组11a、所述变焦群组12a和所述对焦群组13a的具体数量选择,并限于此实施例,其可根据所述可变焦摄像模组100a的光学设计要求进行调整。
为了对进入所述感光组件30a的成像光线进行限制,在本申请一些示例中,所述可变焦摄像模组100a,进一步包括设置于所述感光组件30a的感光路径上的光阻挡元件(未示出),其中,所述光阻挡元件能够至少部分地阻挡成像光线投射,以尽可能地减少杂散光对所述可变焦摄像模组100a的成像质量的影响。优选的,所述光阻挡元件设置于所述光转折元件40a的入光面或出光面。
如图69和图70所示,在本申请的一些实施例中,所述感光组件30a包括线路板31a、感光芯片32a、电子元件33a、底座34a及滤光元件35a。所述感光芯片32a设置于所述线路板31a,并电连接于所述线路板31a。所述底座34a设置于所述线路板31a,并位于所述感光芯片32a的周侧,所述滤光元件35a被安装于所述底座34a上以被保持于所述感光芯片32a的感光路径上。所述感光芯片32a包括感光区,和围绕于所述感光区的非感光区。
在本申请的一个示例中,所述感光芯片32a被安装于所述线路板31a的上表面,并通过打金线的方式电连接于所述线路板31a。当然,在本申请的其他实施例中,所述感光芯片32a还能以其他方式被设置于所述线路板31a和/或其他方式电连接于所述线路板31a,例如,以芯片倒装的方式贴附于所述线路板31a的下表面,对此,并限于此实施例。应可以理解,在本申请的一些实施例中,所述感光芯片32a的感光路径形成所述感光组件30a的感光路径。
所述底座34a被设置于所述线路板31a上以封装位于所述线路板31a上的电子器件且用于支撑其他部件。在本申请一个具体的示例中,所述基座被实施为单独成型的塑料支架,其通过黏着剂附着于 所述线路板31a的表面,并用于支撑其他部件。当然,在本申请的其他实施例中,所述基座还能以其他方式形成于所述线路板31a,例如,所述基座被实施为模塑基座,其通过模塑工艺一体成型于所述线路板31a的预设位置,对此,并限于此实施例。
在本申请的一些实施例中,所述滤光元件35a被保持于所述感光芯片32a的感光路径上,用于对进入所述感光芯片32a的成像光线进行过滤。在一个具体的示例中,所述滤光元件35a被安装于所述底座34a上且对应于所述感光芯片32a的至少感光区域,通过这样的方式,所述滤光元件35a被保持于所述感光芯片32a的感光路径上。值得一提的是,在本申请的其他实施例中,所述滤光元件35a还能够以其他方式被安装于所述底座34a上,例如,先在所述底座34a上设置滤光元件35a支架,进而将所述滤光元件35a安装在所述滤光元件35a支架上,也就是,在该示例中,所述滤光元件35a可通过其他支撑件被间接地安装于所述底座34a上。并且,在本申请的其他实施例中,所述滤光元件35a还能够被安装于所述可变焦摄像模组100a的其他位置,例如,所述滤光元件35a形成于所述变焦镜头组10a内(例如,作为一层滤光膜附着于所述变焦镜头组10a的某片光学透镜的表面),对此,并限于此实施例。
如前所述,根据摄像模组高像素、大芯片、小尺寸的发展趋势,这使得用于驱动所述变焦镜头组10a的所述对焦群组13a和所述变焦群组12a的驱动组件20a提出了更多的技术要求。主要包括:相对更大的驱动力,以及,更优的驱动性能(具体地包括:更高精度的驱动控制和更长的驱动行程)。经研究和试验,本申请发明人提出了一种具有新型结构的压电致动器,该压电致动器能够满足所述可变焦摄像模组100a对于驱动器的技术要求。并且,进一步地采用合适的布置方式将所述压电致动器布置于所述可变焦摄像模组100a内,以使得其满足所述可变焦摄像模组100a的结构设计要求和尺寸设计要求。
根据本申请的一个方面,提出一种用于驱动镜头的驱动组件20a,包括:
驱动载体22a,其具有用于承载镜头的可调群组的载体主体;
驱动元件21a,用于提供使所述驱动载体沿着调整方向移动的驱动力;
摩擦板,其一端与所述驱动载体22a的载体主体固定连接,另一端与所述驱动元件21a作用连接,使得所述驱动元件21a能够驱动所述摩擦板沿着所述调整方向移动。
需要指出,在本申请提出的驱动组件20a中,可以包括一个或者多个驱动载体22a,特别是给每个驱动载体22a分别配有各自的驱动元件21a,由此每个驱动载体22a可以分别承载镜头的一个可调群组,并可以单独由配属的驱动元件21a驱动沿调整方向移动,实现变焦或对焦等光学功能。与此相应地,每个单独的驱动元件21a也分别单独配有对应的零部件,包括摩擦板、摩擦机构215a、预应力装置23a、驱动基板27a、承载机构25a等等。在后面结合附图的说明中,驱动组件20a包括两个驱动载体作为示例进行说明,即包括第一载体221a和第二载体222a,但这个示例不构成对发明构思的限制。显然,驱动组件20a包括一个、三个或者更多数量的驱动载体,也可以实现后面描述的结构、作用和效果。同样,下面结合第一载体221a和第二载体222a所描述的结构、组成和特征,也同样适用于包括一个、三个或者更多数量驱动载体的驱动组件20a,尤其是针对合第一载体221a及其相关零部件给出的说明也等同于驱动组件20a仅包括一个驱动载体的情况,因此在后面的说明书不再单独解 释。
图71是根据本申请的驱动组件20a的一些实施例的爆炸图。如图71所示,在本申请的一些实施例中,所述驱动组件20a包括驱动元件21a、驱动载体22a、预压力装置23a、导引装置24a、承载机构25a、驱动壳体26a、驱动基板27a及位置感测元件28a。
本申请中,变焦镜头组10a的可调群组被安置在所述驱动载体22a中,通过所述驱动元件21a驱动所述驱动载体22a移动从而带动所述变焦镜头组10a移动,以实现所述可变焦摄像模组100a的光学对焦和/或光学变焦功能。在此,驱动元件21a提供使所述驱动载体22a沿着调整方向、也就是沿着镜头组的光轴方向移动的驱动力。
所述驱动组件20a用于驱动所述变焦镜头组10a的变焦群组12a和对焦群组13a,以使得所述变焦群组12a和对焦群组13a相对于所述感光芯片32a的距离被调整,从而实现所述可变焦摄像模组100a的光学对焦和/或光学变焦功能。
在所述驱动元件21a与所述驱动载体22a的载体主体之间设置摩擦板,所述摩擦板的一端与所述驱动载体22a的载体主体固定连接,另一端与所述驱动元件21a作用连接,使得所述驱动元件21a能够驱动所述摩擦板沿着所述调整方向移动。
所述驱动组件20a还包括给所述驱动元件21a提供预压力的预压力装置23a,使得驱动元件21a在所述预压力的作用下与所述摩擦板保持摩擦接触。例如,预压力装置23a可以包括上夹部231a、下夹部233a以及连接所述上夹部和下夹部233a的连接部,并将摩擦板以及布置在摩擦板两侧的驱动元件21a和可能的摩擦机构215a弹性夹持在所述预压力装置23a的上夹部231a和下夹部233a之间。
所述驱动组件20a还包括导引装置24a,所述导引装置24a设置于所述驱动载体22a上,并通过所述导引装置24a控制所述驱动载体22a的移动方向,以实现所述导引装置24a的导向作用。例如,导引装置24a设置成与所述驱动载体22a滑动连接,从而驱动载体22a能在驱动元件21a的驱动下沿着导引装置24a移动。作为示例,所述导引装置24a包括导杆,所述导杆平行于所述调整方向穿过驱动载体22a的连接孔,从而驱动载体22a能在驱动元件21a的驱动下沿着导引装置24a移动。显然,导引装置24a也可以构造成其他已知的滑动引导结构,例如滑轨、导槽等结构。
所述驱动组件20a还可以包括设置在所述预压力装置23a与摩擦板之间的摩擦机构215a,使得摩擦板与所述预压力装置23a通过所述摩擦机构215a活动连接,其中所述预压力装置23a将摩擦机构215a顶压在摩擦板上。例如,可以在所述摩擦板的一个侧面上设置驱动元件21a,在摩擦板的相对的另一个侧面上设置所述摩擦机构215a,使得摩擦板在所述预压力装置23a的作用下被夹持在所述驱动元件21a和所述摩擦机构215a之间,使得摩擦板能在所述驱动元件的驱动作用下沿着所述调整方向移动。
所述驱动组件20a还可以包括驱动基板27a,其设置在所述预压力装置23a与所述驱动元件21a之间,用于给驱动元件21a输送电流。为此,所述驱动基板27a延伸至所述感光组件30a的所述线路板31a,以实现所述驱动组件20a的电路导通。此外,所述驱动基板27a可以通过所述预压力装置23a夹持在所述驱动元件21a上。
所述驱动组件20a还可以包括位置感测元件28a,其设置用于感测移动零部件的位置,例如驱动 载体22a或者摩擦板的移动位置。可选地,位置感测元件28a可以固定在驱动基板27a上。可选地,所述驱动基板27a的第二导电端设置有延伸部,所述延伸部向内朝向光轴或者说驱动载体22a的方向延伸,并基于摩擦板或者说摩擦板所在平面与导引装置24a相对。其中所述位置感测元件28a设置在所述延伸部上,并且与位置感测元件28a的位置相对地在摩擦板上设有感测磁铁。
所述驱动组件20a还可以包括驱动壳体26a,其作为驱动组件20a的外部壳体,将上述零部件封闭在其壳体内部空间中。例如,驱动壳体26a可以包括上壳体261a和与所述上壳体261a连接成封闭结构的下壳体262a。在完成组装后,上壳体261a和下壳体262a可以连接固定并形成封闭空间。
所述驱动组件20a还可以包括承载机构25a。例如,所述承载机构25a可以设置于所述预压力装置23a与所述驱动壳体26a之间,不仅能够为所述驱动元件21a、驱动载体22a和预压力装置23a提供支撑,也能够通过所述承载机构25a将所述驱动元件21a、预压力装置23a固定于所述驱动壳体26a。
例如,所述预压力装置23a可以设置于承载机构25a的安置空间中,例如利用弹性嵌卡在所述安置空间中。所述安置空间例如由承载机构25a的多个伸出的定位柱251a形成。由此在横向于调整方向上观察,预压力装置23a处在所述驱动载体22a与所述承载机构25a之间,为所述驱动元件21a提供一定的预压力,使得所述驱动元件21a与所述驱动载体22a、具体地与摩擦板在预压力的作用下能够保持摩擦接触。
在一些实施例中,所述驱动载体22a还包括从驱动载体22a的载体主体向外伸出的连接端,所述连接端具有连接孔,所述导引装置24a包括导杆,所述导杆平行于所述调整方向穿过驱动载体22a的连接端的连接孔,从而驱动载体22a能在驱动元件21a的驱动下沿着导引装置24a移动。
具体地,第一载体221a包括从第一载体221a的载体主体2211a向外延伸的第一连接端22121a和从第一载体221a的载体主体2211a向外延伸的第二连接端22122a,其中第一连接端22121a和第二连接端22122a分别位于第一载体221a的载体主体2211a的彼此相对的两侧,其中第一载体221a的第一连接端22121a具有第一连接孔221211a,第一载体221a的第二连接端22122a具有第二连接孔221221a,并且
第二载体222a还包括从第二载体222a的载体主体2221a向外延伸的第一连接端22221a和从第二载体222a的载体主体2221a向外延伸的第二连接端22222a,其中第一连接端22221a和第二连接端22222a分别位于第二载体222a的载体主体2221a的彼此相对的两侧,其中第二载体222a的第一连接端22221a具有第一连接孔222211a,第二载体222a的第二连接端22222a具有第二连接孔222221a。
其中所述导引装置24a包括第一导杆241a和第二导杆242a,其中第一导杆241a穿过第一载体221a的第二连接端22122a的第二连接孔221221a和第二载体222a的第一连接端22221a的第一连接孔222211a,第二导杆242a穿过第一载体221a的第一连接端22121a的第一连接孔221211a和第二载体222a的第二连接端22222a的第二连接孔222221a,从而第一载体221a和第二载体222a能分别在第一驱动元件和第二驱动元件的驱动下沿着导引装置24a的第一导杆241a和第二导杆242a单独移动,其中第一导杆241a和第二导杆242a彼此平行地沿着所述调整方向布置。
根据本申请的一些实施例,在所述驱动元件21a与所述驱动载体22a的载体主体之间形成结构空间。其中,摩擦板设置在所述驱动元件21a与所述驱动载体22a的载体主体之间的所述结构空间中, 并且所述摩擦板的一端与所述驱动载体22a的载体主体固定连接,另一端与所述驱动元件21a作用连接,使得所述驱动元件21a能够驱动所述摩擦板沿着所述调整方向移动。因此,所述设置在驱动元件与所述驱动载体的载体主体之间的结构空间中的摩擦板将所述结构空间分成第一结构空间和与第一结构空间相对的第二结构空间。在此,第一结构空间和与第一结构空间相对的第二结构空间例如体现为附图中摩擦板的上部空间和下部空间。
具体地,结合附图中第一载体221a和第二载体222a,分别详细说明如下。
图72是根据本申请的一些实施例的驱动载体22a和摩擦板的爆炸图。为此,驱动载体22a例如包括第一载体221a和第二载体222a,其分别用于承载镜头的至少一个可调群组,例如变焦群组12a和对焦群组13a,其中第一载体221a和第二载体222a依次布置在沿调整方向的同一轴线上,并能够彼此独立地沿所述调整方向移动。
具体地,如图73至图75所示,所述驱动载体22a包括第一载体221a和第二载体222a,所述第一载体221a与所述第二载体222a沿所述变焦镜头组10a的光轴方向依次设置,所述第一载体221a与所述第二载体222a分别在第一驱动元件211a和第二驱动元件212a的驱动下沿光轴方向或者说沿调整方向移动。为此,参见图79,驱动组件20a包括第一驱动元件211a,用于提供使第一载体221a沿所述调整方向移动的驱动力,以及第二驱动元件212a,用于提供使第二载体222a沿所述调整方向移动的驱动力。
所述变焦群组12a被安装于所述第一载体221a,所述对焦群组13a被安装于所述第二载体222a。当然,也可以所述对焦群组13a被安装于所述第一载体221a,所述变焦群组12a被安装于所述第二载体222a。本申请中,将变焦群组12a与对焦群组13a分别设置在两个载体上,避免了变焦群组12a与对焦群组13a在移动过程中产生干扰,进而影响光学变焦和/或光学对焦的效果。
所述第一载体221a包括第一载体主体2211a和连接端2212a。
所述第一载体主体2211a内具有容纳腔22111a,所述容纳腔22111a可以将所述对焦群组13a或变焦群组12a容纳其中。
第一载体221a的连接端2212a包括设置于所述第一载体主体2211a的第一侧壁并向外延伸的第一连接端22121a和设置于所述第一载体主体2211a第二侧壁并向外延伸的第二连接端22122a,所述第一载体主体2211a的第一侧壁和第二侧壁分别位于沿光轴方向或者说沿调整方向相对的两侧。
所述第一连接端22121a上具有形成于其中的第一连接孔221211a,以将所述导引装置24a通过该连接孔与所述第一载体221a连接。
所述第二连接端22122a上具有形成于其中的第二连接孔221221a,以将所述导引装置24a通过该连接孔与所述第一载体221a连接。
所述第二连接端22122a还具有形成于其中的安置槽221222a,用于安置所述第一摩擦板2213a。
在本申请的示例中,所述第一连接孔221211a、第二连接孔221221a可以为通孔结构,也可以为凹槽结构。优选的,所述第一连接孔221211a为凹槽结构,所述第二连接孔221221a为通孔结构。
在本申请的一些实施例中,所述第一连接孔221211a与所述第二连接孔221221a具有一定的高度差,所述第一连接孔221211a位于所述第一载体221a的下端,所述第二连接孔221221a位于所述第一 载体221a的上端。这种设置方式可以为所述驱动组件20a中的其他元件提供一定的避让空间或者说结构空间,充分利用所述驱动组件20a中的空间位置,使得所述变焦摄像模组的结构更加紧凑。
当然,在本申请的其他实施例中,所述第一连接孔221211a与第二连接孔221221a也可以具有相同的高度,即都设置于所述第一载体221a的上端或下端。所述第一摩擦板2213a设置于所述第二连接端22122a的所述安置槽221222a内。
所述第一摩擦板2213a与所述第一载体221a可以为一体式结构,也可以为分体式结构,即所述第一摩擦板2213a可以是与所述第一载体221a一体成型的,也可以是嵌入于所述第二连接端22122a的安置槽221222a内进而与所述第一载体221a进行固定。
所述第一摩擦板2213a为立方体结构,也就是说,第一驱动元件211a与所述第一摩擦板2213a的一摩擦面摩擦接触,进而驱动所述第一摩擦板2213a带动所述第一载体221a移动。其中,所述第一摩擦板2213a的摩擦面沿光轴方向或者说沿调整方向的长度大于等于所述第一载体221a的移动行程。在本申请中,所述第一连接孔221211a的数量为至少一个,所述第二连接孔221221a的数量为至少一个。例如,可以设置两个彼此有一定距离的第二连接孔221221a。第二连接孔221221a的外壁可以形成所述安置槽221222a的一个内壁。
如图79、图90a-b所示,所述第一摩擦板2213a设置于所述第一载体221a与第一驱动元件211a之间,所述第一摩擦板2213a的一端与第一驱动元件211a作用连接,例如摩擦接触,所述第一摩擦板2213a的另一端向内延伸与所述第一载体221a的第一载体主体2211a固定连接。所述向内是指沿朝向于光轴的方向。
在此,所述导引装置24a、位置感测元件28a均被设置于所述第一载体主体2211a与第一驱动元件211a之间形成的空余空间或者说结构空间内。具体地,所述第一摩擦板2213a将所述第一载体221a与第一驱动元件211a连接,并且所述第一摩擦板2213a向内延伸为所述驱动组件20a中的导引装置24a及位置感测元件28a提供一定的避让空间。换句话说,第一摩擦板2213a的一端与第一载体221a的第一载体主体2211a固定连接,另一端与所述第一驱动元件211a作用连接,使得第一驱动元件211a能够驱动第一摩擦板2213a沿着所述调整方向移动。因此,所述设置在第一驱动元件211a与所述第一载体221a的第一载体主体2211a之间的结构空间中的第一摩擦板2213a将所述结构空间分成第一结构空间和与第一结构空间相对的第二结构空间。在此,第一结构空间和与第一结构空间相对的第二结构空间例如体现为附图中第一摩擦板2213a的上部空间和下部空间。
在所述第一结构空间中可以布置用于感测第一载体221a或者第一摩擦板2213a的移动位置的位置感测元件28a,而在所述与第一结构空间相对的第二结构空间中可以布置用于引导第一载体221a沿着所述调整方向移动的导引装置24a,尤其是导引装置24a的导杆。换句话说,例如可以将所述导引装置24a和位置感测元件28a分别设置于所述第一摩擦板2213a的上部空间和下部空间,使得所述可变焦摄像模组100a的结构更加紧凑。
在此,以第一载体221a及其相应的零部件为例说明了组成、结构和布置方式,这些说明同样适用于下面描述的第二载体222a,同样也适用于驱动组件20a只包括一个驱动载体的情况,在这种情况下,第一载体221a即是唯一的驱动载体。
所述第二载体222a与所述第一载体221a可以具有相同的结构,也可以具有不同的结构。本申请中,以所述第二载体222a与第一载体221a具有相同的结构为例进行介绍。需要指出,上面结合第一载体221a描述的相关零部件结构和布置方式,也同样适用于第二载体222a的相关零部件结构和布置方式,除非另有特别说明。
所述第二载体222a包括第二载体主体2221a和连接端2222a。所述第二载体主体2221a内具有容纳腔22211a,所述容纳腔22211a可以将所述对焦群组13a或变焦群组12a容纳其中。所述连接端包括设置于所述第二载体主体2221a的第一侧壁并向外延伸的第二连接端22222a和设置于所述第二载体主体2221a的第二侧壁并向外延伸的第一连接端22221a,所述第二载体主体2221a的第一侧壁和第二侧壁分别位于沿光轴方向或者说沿调整方向相对的两侧。所述第一连接端22221a上具有形成于其中的第一连接孔222211a,以将所述导引装置24a通过该连接孔与所述第二载体222a连接。所述第二连接端22222a上具有形成于其中的第二连接孔222221a,以将所述导引装置24a通过该连接孔与所述第二载体222a连接,所述第二连接端22222a还具有形成于其中的安置槽222222a,用于安置所述第二摩擦板2223a。
在示出的示例中,所述第一连接孔222211a、第二连接孔222221a可以为通孔结构,也可以为凹槽结构。优选的,所述第一连接孔222211a为凹槽结构,所述第二连接孔222221a为通孔结构。在本申请的一些实施例中,所述第一连接孔222211a与所述第二连接孔222221a具有一定的高度差,所述第一连接孔222211a位于所述第二载体222a的上端,所述第二连接孔222221a位于所述第二载体222a的下端。这种设置方式可以为所述驱动组件20a中的其他元件提供一定的避让空间,充分利用所述驱动组件20a中的空间位置,使得所述变焦摄像模组100a的结构更加紧凑。当然,在本申请的其他实施例中,所述第一连接孔222211a与第二连接孔222221a也可以具有相同的高度,即都设置于所述第二载体222a的上端或下端。所述第二摩擦板2223a设置于所述第二连接端22222a的所述安置槽222222a内。
所述第二摩擦板2223a与所述第二载体222a可以为一体式结构,也可以为分体式结构,即所述第二摩擦板2223a可以是与所述第二载体222a一体成型的,也可以是嵌入于所述第二连接端22222a的安置槽222222a内进而与所述第二载体222a进行固定。所述第二摩擦板2223a为立方体结构,也就是说,所述第二驱动元件212a与所述第二摩擦板2223a的一摩擦面摩擦接触,进而驱动所述第二摩擦板2223a带动所述第二载体222a移动。其中,所述第二摩擦板2223a的摩擦面沿光轴方向或者说沿调整方向的长度大于等于所述第二载体222a的移动行程。
在本申请中,所述第一连接孔222211a的数量为至少一个,所述第二连接孔222221a的数量为至少一个。例如,可以设置两个彼此有一定距离的第二连接孔222221a。第二连接孔222221a的外壁可以形成所述安置槽222222a的一个内壁。
结合附图示出的实施例,所述第一载体221a和第二载体222a内的安置槽为夹持的轨道结构,所述第一摩擦板2213a和第二摩擦板2223a分别夹持于平行的轨道内,以使得所述摩擦板与所述驱动载体具有更好的平行度,进而降低在行进过程中的晃动与卡住的问题,使得所述可变焦摄像模组100a的光学系统更加稳定,避免产生倾斜。优选的,所述第一摩擦板2213a与所述第二摩擦板2223a处于同 一水平面上。优选的,第一摩擦板2213a与所述第二摩擦板2223a为陶瓷片。
如图79、图90a-b所示,所述第二摩擦板2223a设置于所述第二载体222a与第二驱动元件212a之间,所述第二摩擦板2223a的一端与第二驱动元件212a摩擦接触,所述第二摩擦板2223a的另一端向内延伸与所述第二载体222a的第二载体主体2221a固定连接。所述向内是指沿朝向于光轴或者说驱动载体的几何轴线的方向。
本申请中,所述导引装置24a和位置感测元件28a均被设置于所述第二载体主体2221a与第二驱动元件212a之间形成的空余空间或者说结构空间内。具体地,所述第二摩擦板2223a将所述第二载体222a与第二驱动元件212a连接,并且所述第二摩擦板2223a向内延伸为所述驱动组件中的导引装置及位置感测元件提供一定的避让空间。换句话说,第二摩擦板2223a的一端与第二载体222a的第二载体主体2221a固定连接,另一端与第二驱动元件212a作用连接,使得第二驱动元件212a能够驱动第二摩擦板2223a沿着所述调整方向移动。因此,所述设置在第二驱动元件212a与第二载体222a的第二载体主体2221a之间的结构空间中的第二摩擦板2223a将所述结构空间分成第一结构空间和与第一结构空间相对的第二结构空间。在此,第一结构空间和与第一结构空间相对的第二结构空间例如体现为附图中第二摩擦板2223a的上部空间和下部空间。
在所述第一结构空间中可以布置用于感测第二载体222a或者第二摩擦板2223a的移动位置的位置感测元件28a,而在所述与第一结构空间相对的第二结构空间中可以布置用于引导第二载体222a沿着所述调整方向移动的导引装置24a,尤其是导引装置24a的导杆。换句话说,例如可以将所述导引装置24a和位置感测元件28a分别设置于所述第二摩擦板2223a的上部空间和下部空间,使得所述可变焦摄像模组100a的结构更加紧凑。
在所述驱动组件20a中,所述第一载体221a与所述第二载体222a沿所述光轴方向或者说调整方向依次设置,并且所述第一载体221a的所述第一摩擦板2213a设置于所述驱动组件20a的第一侧,所述第二载体222a的第二摩擦板2223a设置于所述驱动组件20a的第二侧,所述驱动组件20a的第一侧和第二侧分别位于沿光轴方向或者说沿调整方向相对的两侧。
第一载体221a的第一连接端22121a与第二载体222a的第二连接端22222a位于所述驱动组件20a的第一侧,第一载体221a的第二连接端22122a与第二载体222a的第一连接端22221a位于所述驱动组件20a的第二侧,所述驱动组件20a的第一侧和第二侧分别位于沿光轴方向或者说沿调整方向相对的两侧。其中,第一载体221a的第一连接端22121a位于所述第二载体222a的第二摩擦板2223a的上方或下方,第二载体222a的第一连接端22221a位于所述第一载体221a的第一摩擦板2213a的下方或上方。也就是说,第一载体221a的第一连接端22121a需要对第二载体222a的第二摩擦板2223a的位置进行避让,第二载体222a的第一连接端22221a的位置需要对第一载体221a的第一摩擦板2213a的位置进行避让,以避免对摩擦板的移动产生干扰,并且也可以使得所述驱动组件20a的结构更加紧凑。
并且,在本申请中,所述第一摩擦板2213a与所述第二摩擦板2223a为立方体结构,其具有沿光轴方向或者说沿调整方向设置的摩擦面,所述驱动元件与所述摩擦面接触,以提供所述第一摩擦板2213a和第二摩擦板2223a相应的驱动力,使得所述第一摩擦板2213a和第二摩擦板2223a能够更加平 稳的移动。
在本申请中,所述第一摩擦板2213a和第二摩擦板2223a沿光轴方向或者说沿调整方向的长度可以相同也可以不同,即所述第一摩擦板2213a和第二摩擦板2223a根据对应的驱动元件的驱动行程决定。当对应的驱动元件的驱动行程长,所述第一摩擦板2213a和第二摩擦板2223a的长度更长;当对应的驱动元件的驱动行程短,所述第一摩擦板2213a和第二摩擦板2223a的长度可较短。
在一些实施例中,所述与第一载体221a的第一载体主体2211a固定连接的第一摩擦板2213a沿所述调整方向朝着远离第二载体222a的方向延伸,所述与第二载体222a的第二载体主体2221a固定连接的第二摩擦板2223a沿所述调整方向朝着远离第一载体221a的方向延伸。换句话说,第一摩擦板2213a和第二摩擦板2223a沿光轴方向或者说沿调整方向分别朝向相对的两个方向延伸,即一个朝向物侧延伸,一个朝向像侧延伸。
在此,第一驱动元件211a和与第一驱动元件211a作用连接的第一摩擦板2213a位于所述驱动组件20a的第一侧,第二驱动元件212a和与第二驱动元件212a作用连接的第二摩擦板2223a位于所述驱动组件20a的第二侧,所述第一侧和第二侧相对于第一载体221a和第二载体222a的所述共同轴线彼此相对。
具体地,如图78所述,所述第一摩擦板2213a与所述第二摩擦板2223a沿光轴方向或者说沿调整方向分别朝向相对的两个方向延伸,即一个朝向物侧延伸,一个朝向像侧延伸。在本申请的一些实施例中,所述第一摩擦板2213a可以朝着远离第二载体222a的方向朝向物侧方向延伸,所述第二摩擦板2223a可以朝着远离第一载体221a的方向朝向像侧方向延伸。其中,所述物侧为靠近所述光转折40a的一侧,所述像侧为靠近所述感光组件30a的一侧。
在一些实施例中,第一驱动元件211a设置在所述驱动组件20a的沿所述调整方向的中间位置,并且第二驱动元件212a设置在所述驱动组件20a的沿所述调整方向的中间位置。其中,第一驱动元件211a和第二驱动元件212a可以沿所述调整方向彼此平行设置。
具体地,第一摩擦板2213a与第二摩擦板2223a沿不同的方向延伸,可以使得第一驱动元件211a和第二驱动元件212a设置于所述驱动组件20a的中间位置,进而可以使得所述第一摩擦板2213a与第二摩擦板2223a在移动过程中分别保持在第一驱动元件211a和第二驱动元件212a的驱动范围内,即在驱动过程中第一驱动元件211a与所述第一摩擦板2213a保持摩擦接触,且第二驱动元件212a和第二摩擦板2223a保持摩擦接触,而不会使得所述第一摩擦板2213a和所述第二摩擦板2223a超出所述移动行程的范围而造成第一驱动元件211a和第二驱动元件212a与摩擦板分离。
在另外一些实施例中,所述导引装置24a可以包括多个导杆,尤其是两个导杆,即第一导杆241a和第二导杆242a。
具体地,结合图76至77详细说明如下。
如图77至78所示,所述导引装置24a包括第一导杆241a及第二导杆242a。所述第一导杆241a及所述第二导杆242a设置用于精度良好地引导变焦镜头组10a沿光轴方向移动,并且其轴线与变焦镜头组10a的光轴或者说调整方向相平行。
所述第一导杆241a及所述第二导杆242a分别设置于所述驱动组件20a相对的第二侧和第一侧, 以与第一驱动元件211a和第二驱动元件212a相互配合,为所述第一载体221a和第二载体222a的移动实现导向功能。
为此,导引装置24a的导杆可以在两端与驱动壳体26a固定连接。所述第一导杆241a和第二导杆242a的两端分别固定于所述驱动壳体26a,使得所述第一导杆241a和第二导杆242a能够稳固地设置于所述驱动组件20a内。
所述第一导杆241a和第二导杆242a沿所述变焦镜头组10a的光轴或者说调整方向设置,并且所述第一导杆241a和第二导杆242a分别与所述第一载体221a和第二载体222a活动连接,通过第一导杆241a和第二导杆242a为所述第一载体221a和第二载体222a提供导引方向。
在示出的实施例中,第一导杆241a穿过第一载体221a的第二连接端22122a的第二连接孔221221a和第二载体222a的第一连接端22221a的第一连接孔222211a,第二导杆242a穿过第一载体221a的第一连接端22121a的第一连接孔222211a和第二载体222a的第二连接端22222a的第二连接孔222221a,从而第一载体221a和第二载体222a能分别在第一驱动元件211a和第二驱动元件212a的驱动下沿着导引装置24a的第一导杆241a和第二导杆242a单独移动,其中第一导杆241a和第二导杆242a彼此平行地沿着所述调整方向布置。
进一步,所述第一导杆241a可以通过第一载体221a的第二连接端22122a的第二连接孔221221a与所述第一载体221a活动连接,并通过第二载体222a的第一连接端22221a的第一连接孔222211a与所述第二载体222a活动连接。在此,第一载体221a的第二连接端22122a的第二连接孔221221a与第二载体222a的第一连接端22221a的第一连接孔222211a是彼此同轴的。
类似地,所述第二导杆242a可以通过第一载体221a的第一连接端22121a的第一连接孔222211a与所述第一载体221a活动连接,并通过第二载体222a的第二连接端22222a的第二连接孔222221a与第二载体222a活动连接。在此,第一载体221a的第一连接端22121a的第一连接孔222211a与第二载体222a的第二连接端22222a的第二连接孔222221a是彼此同轴的。
在第一驱动元件211a驱动所述第一载体221a沿光轴方向或者说沿调整方向移动时,所述第一导杆241a可以作为主导杆用于为所述第一载体221a的移动提供引导,所述第二导杆242a可以作为副导杆用于防止所述第一载体221a旋转。
在第二驱动元件212a驱动所述第二载体222a沿光轴方向或者说沿调整方向移动时,所述第二导杆242a可以作为主导杆用于为所述第二载体222a的移动提供引导,所述第一导杆241a可以作为副导杆用于防止所述第二载体222a旋转。
也就是说,所述第一导杆241a与第二导杆242a均可以作为主导杆和副导杆,二者相互配合既具有导引方向的功能,又能够使得驱动载体防止旋转。
所述第一导杆241a和所述第二导杆242a可以具有一定高度差,即所述第一导杆241a可以位于所述第一载体221a和第二载体222a的第二侧的上端,所述第二导杆242a可以位于所述第一载体221a和第二载体222a的第一侧的下端,其中第一载体221a和第二载体222a的第一侧和第二侧相对于光轴位于相对两侧。由此,为所述驱动组件20a中的其他元件提供一定的避让空间,使得所述可变焦摄像模组100a的结构更加紧凑。
进一步,所述第一导杆241a设置于所述第一摩擦板2213a的上方,所述第二导杆242a设置于所述第二摩擦板2223a的下方,从而为所述第一摩擦板2213a和第二摩擦板2223a预留出一定的移动空间,避免对第一载体221a和第二载体222a的移动产生干扰。当然,在本申请的其他实施例中,所述第一导杆241a可以设置于所述第一摩擦板2213a的下方,所述第二导杆242a可以设置于所述第二摩擦板2223a的上方。
如图78至图85所示,所述驱动元件21a包括至少两个驱动元件:变焦驱动元件211a和对焦驱动元件212a,所述至少两个驱动元件21a被实施为压电致动器。在此,变焦驱动元件211a也称为第一驱动元件,对焦驱动元件212a也称为第二驱动元件。相应的驱动元件也可以承担其他功能,而不限于在此举例说明的对焦或者变焦功能。
在附图中,所述变焦驱动元件211a和对焦驱动元件212a分别设置于所述驱动组件20a的侧面,以避免所述可变焦摄像模组100a高度尺寸的增加。而且,将所述变焦驱动元件211a和对焦驱动元件212a分别设置于所述驱动组件20a相对的第一侧和第二侧,即所述变焦驱动元件211a被设置于所述驱动组件20a的第一侧,所述对焦驱动元件212a被设置于所述驱动组件20a与之相对的第二侧。
当所述变焦群组12a设置在所述第一载体221a中,所述变焦驱动元件211a用以驱动所述第一载体221a移动,进而带动所述变焦群组12a移动以实现光学变焦功能。
当所述对焦群组13a设置在所述第二载体222a中,所述对焦驱动元件212a用以驱动所述第二载体222a移动,进而带动所述对焦群组13a移动以实现光学对焦功能。
当然,在本申请的其他实施例中,若所述变焦群组12a、对焦群组13a的安置位置发生变化,所述变焦驱动元件211a及所述对焦驱动元件212a的位置也发生变化。在本申请中,所述变焦驱动元件211a与所述对焦驱动元件212a对称设置,优选的,所述变焦驱动元件211a与所述对焦驱动元件212a沿光轴方向或者说沿调整方向对称设置。并且,所述变焦驱动元件211a与所述对焦驱动元件212a与光轴方向保持互相平行。这种分开两侧设置的设置方式不仅可以避免所述可变焦摄像模组100a单侧尺寸的增加,而且能够使得所述变焦驱动元件211a和对焦驱动元件212a在分别驱动所述第一载体221a移动及所述第二载体222a移动的过程中,能够避免相互之间产生干涉。
进一步,本申请的设置方式还能够使得所述可变焦摄像模组100a的内部空间被充分地应用,以利于所述可变焦摄像模组100a的轻型化和薄型化。而且,还能够为所述第一载体221a和第二载体222a提供相互平行的驱动力,使得第一载体221a和第二载体222a在移动过程中不会产生倾斜。在本申请中,所述变焦驱动元件211a与所述对焦驱动元件212a设置于所述驱动组件20a的沿光轴方向或者说沿调整方向的中间位置,可以使得所述第一摩擦板2213a与第二摩擦板2223a在移动过程中都保持在所述驱动元件21a的驱动范围内,即在驱动过程中第一摩擦板2213a和第二摩擦板2223a与对应的驱动元件分别保持摩擦接触,而不会使得所述第一摩擦板2213a和所述第二摩擦板2223a超出所述移动行程的范围而造成驱动元件与摩擦板分离。
在一些实施例中,驱动元件21a可以构造成压电致动器,包括压电板213a和固定在压电板上的摩擦驱动部214a,其中摩擦驱动部214a与摩擦板作用连接,从而能够驱动所述摩擦板沿着所述调整方向移动,也就是沿着光轴方向移动。具体地,第一驱动元件211a的摩擦驱动部214a可以与第一摩擦 板2213a作用连接,从而能够驱动第一摩擦板2213a沿着调整方向移动,第二驱动元件212a的摩擦驱动部214a可以与第二摩擦板2223a作用连接,从而能够驱动第二摩擦板2223a沿着调整方向移动。
图80a-c是根据本申请的一些实施例的压电驱动器与摩擦板的作用连接示意图,其中,在初始位置中,图80a示出了摩擦驱动部214a在对应的摩擦板2213a(2223a)的中部位置处与摩擦板2213a(2223a)作用连接,图80b示出了摩擦驱动部214a在对应的摩擦板2213a(2223a)的一个端部处与摩擦板2213a(2223a)作用连接,图80c示出了在相对的另一个端部处与摩擦板2213a(2223a)作用连接。
如图80a-c至图85所示,所述驱动元件21a包括至少一行波式压电致动器,所述行波式压电致动器具有纳米级的步级精度,能够达到更极致的光学系统要求。作为示例,所述至少一压电致动器包括压电陶瓷板213a和固定于所述压电陶瓷板213a的摩擦驱动部214a。所述压电陶瓷板213a由非常小的压电陶瓷组成,在给所述压电陶瓷板213a提供电源激励后,通过所述压电陶瓷板213a的逆压电效应,所述压电陶瓷板213a适于发生形变,从而所述压电陶瓷板213a上的摩擦驱动部214a随之运动。
进一步,所述变焦驱动元件211a设置于所述第一摩擦板2213a,所述对焦驱动元件212a设置于所述第二摩擦板2223a,即所述变焦驱动元件211a和所述对焦驱动元件212a分别单独地驱动所述第一摩擦板2213a和第二摩擦板2223a移动,进而分别带动对应的第一载体221a和第二载体222a单独移动。在本申请中,所述摩擦板沿光轴方向或者说沿调整方向的长度大于等于所述驱动元件21a的驱动行程。在后文中,所述变焦驱动元件211a称为第一驱动元件211a,所述对焦驱动元件212a称为第二驱动元件212a。
总体而言,摩擦驱动部214a作用于对应的摩擦板上,并与所述对应的摩擦板摩擦接触。当然,优选的,在初始状态,所述摩擦驱动部214a位于对应的摩擦板的中部位置,所述摩擦板可以在所述驱动元件21a的驱动下沿光轴方向或者说沿调整方向双向移动,即朝向物侧移动或朝向像侧移动,亦即摩擦驱动部214a可以朝向两个方向移动。
具体地,在初始位置中,第一驱动元件211a的摩擦驱动部214a可以在第一摩擦板2213a的沿所述调整方向的中间位置与第一摩擦板2213a作用连接,和/或第二驱动元件212a的摩擦驱动部214a可以在第二摩擦板2223a的沿所述调整方向的中间位置与第二摩擦板2223a作用连接。
当然,总体而言,在初始状态中,所述摩擦驱动部214a也可以相对于对应的摩擦板处在一个端部上,由此这个摩擦板可以在驱动元件21a的所述摩擦驱动部214a驱动下沿光轴方向或者说沿调整方向朝向另一个相反的端部移动。
具体地,在初始位置中,第一驱动元件211a的摩擦驱动部214a在第一摩擦板2213a的沿所述调整方向的一个端部上与第一摩擦板2213a作用连接,和/或第二驱动元件212a的摩擦驱动部214a在第二摩擦板2223a的沿所述调整方向的一个端部上与第二摩擦板2223a作用连接。
也就是说,在初始状态中,所述摩擦驱动部214a也可以位于对应的摩擦部的像侧端/物侧端,所述对应的摩擦板可以在所述驱动元件21a的驱动下沿光轴方向或者说沿调整方向朝向物侧/像侧移动。在本申请中,所述像侧为朝向感光组件30a的一侧,所述物侧为远离感光组件30a的一侧。
第一驱动元件211a与第二驱动元件212a可以为同一种压电致动器,也可以为不同种压电致动 器,本申请中第一驱动元件211a与第二驱动元件212a为同一种压电致动器为例进行介绍。
如图81至图85以及图90a所示的这些实施例中,在摩擦板的一个侧面上设置一个驱动元件,在摩擦板的相对的另一个侧面上设置一个摩擦机构215a,使得这个摩擦板在预压力装置的作用下被夹持在驱动元件和摩擦机构215a之间,从而摩擦板能在驱动元件的驱动作用下沿着所述调整方向移动。
具体地,图81是根据本申请的一些实施例的第一载体221a的示意侧视图,包括组装的第一摩擦板2213a、第一驱动元件211a和第一摩擦机构2151a。第一驱动元件211a也可以称为变焦驱动元件211a,包括压电板213a和固定在压电板上的摩擦驱动部214a。所述第一驱动元件211a的摩擦驱动部214a与第一摩擦板2213a摩擦接触。在给所述第一驱动元件211a提供电源激励后,所述第一驱动元件211a的压电陶瓷板213a产生行波状态的面型变化,从而带动第一驱动元件211a的摩擦驱动部214a产生沿光轴方向或者说沿调整方向的单向偏摆往复运动,由于第一驱动元件211a的摩擦驱动部214a与第一摩擦板2213a之间的摩擦接触,进而带动第一摩擦板2213a沿光轴方向或者说沿调整方向移动。
具体地,当所述第一驱动元件211a被激励后,第一驱动元件211a的摩擦驱动部214a与所述第一摩擦板2213a摩擦接触,所述第一驱动元件211a的压电陶瓷板213a产生行波状态的面型变化,第一驱动元件211a的摩擦驱动部214a在带动下沿光轴方向或者说沿调整方向发生偏摆运动,从而带动第一摩擦板2213a沿光轴方向或者说沿调整方向移动。
当一个运动周期完成后,将第一驱动元件211a的压电陶瓷板213a提起,从第一驱动元件211a的摩擦驱动部214a与所述第一摩擦板2213a分离到所述摩擦驱动部214a与所述第一摩擦板2213a再次摩擦接触,第一驱动元件211a的摩擦驱动部214a在压电陶瓷板213a的带动下重新定位并沿光轴方向或者说沿调整方向再次发生偏摆运动,进而驱动所述第一摩擦板2213a继续沿光轴方向或者说沿调整方向移动。图84a-d示出了相关的压电驱动原理示意图。
在本申请中,所述第一驱动元件211a可以设置于所述第一摩擦板2213a的上部或下部,也就是说所述第一驱动元件211a的摩擦驱动部214a可以与所述第一摩擦板2213a的上摩擦面摩擦接触,也可以与所述第一摩擦板2213a的下摩擦面摩擦接触。因此,第一驱动元件211a可以用于提供使第一载体221a沿所述调整方向移动的驱动力。第一摩擦板2213a可以设置在第一载体221a的载体主体2211a与第一驱动元件211a之间,其中第一摩擦板2213a的一端与第一载体221a的载体主体2211a固定连接,另一端与第一驱动元件211a作用连接,使得第一驱动元件211a能够驱动第一摩擦板2213a沿所述调整方向移动。
所述第一驱动元件211a与所述第一摩擦板2213a设置于第一预压力装置2301a内,通过第一预压力装置2301a的夹持作用使得所述第一驱动元件211a与所述第一摩擦板2213a压在一起。即第一预压力装置2301a提供一沿垂直于所述第一摩擦板2213a的摩擦面的预压力,第一预压力装置2301a能够保持所述第一驱动元件211a与所述第一摩擦板2213a摩擦接触。并且由于预压力的存在,能够使得第一驱动元件211a的摩擦驱动部214a一直保持在所述第一摩擦板2213a的摩擦面上,进而使得所述第一驱动元件211a在所述第一摩擦板2213a各处上产生的驱动力相同。并且,本申请中通过摩擦面上的摩擦力带动所述第一摩擦板2213a移动,能够使得所述第一摩擦板2213a的移动更加平稳。
以所述第一驱动元件211a设置于所述第一摩擦板2213a的上部为例,第一驱动元件211a的压电陶瓷板213a可以与第一预压力装置2301a固定,第一驱动元件211a的摩擦驱动部214a朝向所述第一摩擦板2213a并与所述第一摩擦板2213a的上摩擦面保持摩擦接触。
在一些实施例中,为减小所述第一摩擦板2213a与第一预压力装置2301a之间的摩擦力,在第一预压力装置2301a与第一摩擦板2213a之间可以设置第一摩擦机构2151a,使得第一摩擦板2213a与第一预压力装置2301a通过第一摩擦机构2151a活动连接,其中第一预压力装置2301a将第一摩擦机构2151a顶压在第一摩擦板2213a上。具体地,在第一摩擦板2213a的一个侧面上设置第一驱动元件211a,在第一摩擦板2213a的相对的另一个侧面上设置第一摩擦机构2151a,使得第一摩擦板2213a在第一预压力装置2301a的作用下被夹持在第一驱动元件211a和第一摩擦机构2151a之间,使得第一摩擦板2213a能在第一驱动元件211a的驱动作用下沿着所述调整方向移动。由此,通过点摩擦代替面摩擦以减小所述第一摩擦板2213a与第一预压力装置2301a间的摩擦力。
在本申请的一些实施例中,所述第一摩擦机构2151a包括构造在第一预压力装置2301a和/或第一摩擦板2213a上的凹槽或者辊道,以及布置在所述凹槽或者辊道中的滚珠或滑块。通过在第一预压力装置2301a与所述第一摩擦板2213a的摩擦面之间设置沿光轴方向或者说沿调整方向的凹槽或轨道,并在凹槽或轨道内设置滚珠,可以使得所述第一摩擦板2213a能够在所述摩擦驱动部214a与所述滚珠的夹持下沿光轴方向或者说沿调整方向移动。所述第一驱动元件211a与第一摩擦机构2151a可以沿所述第一摩擦板2213a相对设置。
对于包括第一载体221a和第二载体222a的情况,前面结合第一载体221a及其相关零部件所描述的结构和特征,也同样适用于第二载体222a及其相关零部件,具体见下面的说明。
与图81相对应,图82是根据本申请的一些实施例的第二载体222a的示意侧视图,包括组装的第二摩擦板2223a、第二驱动元件212a和第二摩擦机构2152a。第二驱动元件212a也可以称为对焦驱动元件212a,包括压电板213a和固定在压电板上的摩擦驱动部214a。第二驱动元件212a的摩擦驱动部214a与第二摩擦板2223a摩擦接触。在给所述第二驱动元件212a提供电源激励后,所述第二驱动元件212a的压电陶瓷板213a产生行波状态的面型变化,从而带动第二驱动元件212a的摩擦驱动部214a产生沿光轴方向或者说沿调整方向的单向偏摆往复运动,由于第二驱动元件212a的摩擦驱动部214a与第二摩擦板2223a之间的摩擦接触,进而带动所述第二摩擦板2223a沿光轴方向或者说沿调整方向移动。
具体地,当所述第二驱动元件212a被激励后,第二驱动元件212a的摩擦驱动部214a与所述第二摩擦板2223a摩擦接触,所述第二驱动元件212a的压电陶瓷板213a产生行波状态的面型变化,第二驱动元件212a的摩擦驱动部214a在带动下沿光轴方向或者说沿调整方向发生偏摆运动,从而带动第二摩擦板2223a沿光轴方向或者说沿调整方向移动。
当一个运动周期完成后,将第二驱动元件212a的压电陶瓷板213a提起,从第二驱动元件212a的摩擦驱动部214a与所述第二摩擦板2223a分离到第二驱动元件212a的摩擦驱动部214a与所述第二摩擦板2223a再次摩擦接触,第二驱动元件212a的摩擦驱动部214a在所述压电陶瓷板213a的带动下重新定位并沿光轴方向或者说沿调整方向再次发生偏摆运动,进而驱动所述第二摩擦板2223a继续沿光 轴方向或者说沿调整方向移动。这个工作过程与前面结合第一驱动元件211a的描述过程是相同的。
在本申请中,所述第二驱动元件212a可以设置于所述第二摩擦板2223a是上部或下部,也就是说所述第二驱动元件212a的摩擦驱动部214a可以与所述第二摩擦板2223a的上摩擦面摩擦接触,也可以与所述第二摩擦板2223a的下摩擦面摩擦接触。因此,第二驱动元件212a可以用于提供使第二载体222a沿所述调整方向移动的驱动力。第二摩擦板2223a可以设置在第二载体222a的载体主体2221a与第二驱动元件212a之间,其中第二摩擦板2223a的一端与第二载体222a的载体主体2221a固定连接,另一端与第二驱动元件212a作用连接,使得第二驱动元件212a能够驱动第二摩擦板2223a沿所述调整方向移动。
所述第二驱动元件212a与所述第二摩擦板2223a设置于第二预压力装置2302a内,通过第二预压力装置2302a的夹持作用使得所述第二驱动元件212a与所述第二摩擦板2223a压在一起。即第二预压力装置2302a提供一沿垂直于所述第二摩擦板2223a的摩擦面的预压力,第二预压力装置2302a能够保持所述第二驱动元件212a与所述第二摩擦板2223a摩擦接触。并且由于预压力的存在,能够使得第二驱动元件212a的摩擦驱动部214a一直保持在所述第二摩擦板2223a的摩擦面上,进而使得所述第二驱动元件212a在所述第二摩擦板2223a各处上产生的驱动力相同。并且,本申请中通过摩擦面上的摩擦力带动所述第二摩擦板2223a移动,能够使得所述第二摩擦板2223a的移动更加平稳。
以所述第二驱动元件212a设置于所述第二摩擦板2223a的上部为例,第二驱动元件212a的压电陶瓷板213a与第二预压力装置2302a固定,第二驱动元件212a的摩擦驱动部214a朝向所述第二摩擦板2223a并与所述第二摩擦板2223a的上摩擦面保持摩擦接触。
在一些实施例中,为减小所述第二摩擦板2223a与第二预压力装置2302a之间的摩擦力,在第二预压力装置2302a与第二摩擦板2223a之间可以设置第二摩擦机构2152a,使得第二摩擦板2223a与第二预压力装置2302a通过第二摩擦机构2152a活动连接,其中第二预压力装置2302a将第二摩擦机构2152a顶压在第二摩擦板2223a上。具体地,在第二摩擦板2223a的一个侧面上设置第二驱动元件212a,在第二摩擦板2223a的相对的另一个侧面上设置第二摩擦机构2152a,使得第二摩擦板2223a在第二预压力装置2302a的作用下被夹持在第二驱动元件212a和第二摩擦机构2152a之间,使得第二摩擦板2223a能在第二驱动元件212a的驱动作用下沿着所述调整方向移动。由此,通过点摩擦代替面摩擦以减小所述第二摩擦板2223a与第二预压力装置2302a间的摩擦力。
在本申请的一些实施例中,所述第二摩擦机构2152a包括构造在第二预压力装置2302a和/或第二摩擦板2223a上的凹槽或者辊道,以及布置在所述凹槽或者辊道中的滚珠或滑块。通过在第二预压力装置2302a与所述第二摩擦板2223a的摩擦面之间设置沿光轴方向或者说沿调整方向的凹槽或轨道,并在凹槽或轨道内设置滚珠,可以使得所述第二摩擦板2223a能够在所述摩擦驱动部214a与所述滚珠的夹持下沿光轴方向或者说沿调整方向移动。所述第二驱动元件212a与第二摩擦机构2152a可以沿所述第二摩擦板2223a相对设置。
在此,第一摩擦机构2151a和第二摩擦机构2152a可以构造成相同的,即都分别包括构造在相应的预压力装置和/或摩擦板上的凹槽或者辊道以及布置在所述凹槽或者辊道中的滚珠或滑块。
图90a是根据本申请的一些实施例的驱动组件的轴向视图,其中每个摩擦板分别配有一个驱动元 件和一个摩擦机构。如图90a所示,第一驱动元件211a与第一摩擦机构2151a设置于所述驱动组件20a的同一侧,其中第一驱动元件211a与第一摩擦机构2151a沿所述第一摩擦板2213a相对设置,并且第一驱动元件211a与第一摩擦机构2151a均与所述第一摩擦板2213a摩擦接触。
第二驱动元件212a与第二摩擦机构2152a设置于所述驱动组件20a的同一侧,其中第二驱动元件212a与第二摩擦机构2152a沿所述第二摩擦板2223a相对设置,并且第二驱动元件212a与第二摩擦机构2152a均与所述第二摩擦板2223a摩擦接触。
第一驱动元件211a与第一摩擦机构2151a设置于所述驱动组件20a的第一侧,第二驱动元件212a与第二摩擦机构2152a设置于所述驱动组件20a的第二侧,驱动组件20a的第一侧和第二侧沿光轴或者说沿调整方向彼此相对。
第一驱动元件211a和第一摩擦机构2151a作为整体与第二驱动元件212a和第二摩擦机构2152a作为整体沿光轴方向或者说沿调整方向观察成中心对称,其中第一驱动元件211a与第二驱动元件212a沿光轴方向或者说沿调整方向观察成中心对称,第一摩擦机构2151a与第二摩擦机构2152a沿光轴方向或者说沿调整方向观察成中心对称。
在图90a-b的视角中,光轴方向或者说调整方向表现为在驱动载体的几何中心的一个点,这个点也就是上述中心对称的对称点。此外,第一载体221a和第二载体222a依次布置在沿调整方向的同一轴线上,并能够彼此独立地沿所述调整方向移动,这个轴线与光轴重合并与调整方向平行,因此在视图中也表现为一个点,第一驱动元件211a与第二驱动元件212a相对于这个点是中心对称的。换句话说,在此所述的沿光轴方向或者说沿调整方向观察也就是说沿着驱动载体的调整方向观察。一般而言,第一载体221a和第二载体222a依次布置在沿调整方向的同一轴线上,这个共同的轴线与光轴或者与驱动载体的调整方向都是相同的。沿着驱动载体的调整方向观察,调整方向在此体现为一个点,即中心对称的对称点。这里关于中心对称的说明同样适用于说明书中其他部分关于零部件中心对称的布置方式表述。
同样,第一摩擦机构2151a与第二摩擦机构2152a沿所述轴线观察也是中心对称的。可选地,第一摩擦机构2151a和第二摩擦机构2152a构造成结构相同的标准件。
在本申请中,通过第一驱动元件211a与第二驱动元件212a沿光轴方向或者说沿调整方向观察成中心对称的设置方式,使得第一驱动元件211a与第二驱动元件212a可以具有相同的结构,因此可以将第一驱动元件211a与第二驱动元件212a可以设置为标准件。这种设置方式使得所述可变焦摄像模组的结构设计更加简单,有利于简化所述可变焦摄像模组的结构。也就是说,第一驱动元件211a与第二驱动元件212a可以构造成结构相同的标准件。
特别是,第一驱动元件211a和第一摩擦机构2151a形成的第一结构单元与第二驱动元件212a和第二摩擦机构2152a形成的第二结构单元构可以造成结构相同的标准结构单元,并且第一结构单元和第二结构单元沿所述轴线观察也可以布置成中心对称的。如图90a所示,第一驱动元件211a可以设置于第一摩擦板2213a的下部,第一摩擦机构2151a与之相对地设置于所述第一摩擦板2213a的上部;第二驱动元件212a可以设置于所述第二摩擦板2223a的上部,第二摩擦机构2152a与之相对地设置于所述第二摩擦板2223a的下部。当然,将第一驱动元件211a和第一摩擦机构2151a的位置彼此调换, 同样第二驱动元件212a和第二摩擦机构2152a的位置彼此调换,也是可以行的。
图90b是根据本申请的另一些实施例的驱动组件20a的轴向视图,其中在每个摩擦板的两个相对侧面上分别设置一个驱动元件,使得摩擦板被夹持在这两个驱动元件之间,并能在这两个驱动元件的协同驱动作用下沿着所述调整方向移动。
具体地,如图83和图90b所示,第一驱动元件包括一个第一上驱动元件2111a和一个第一下驱动元件2112a,其中第一上驱动元件2111a和第一下驱动元件2112a位于所述驱动组件20a的同一侧,并且第一上驱动元件2111a和第一下驱动元件2112a在所述第一摩擦板2213a的两侧相对设置。第一上驱动元件2111a和第一下驱动元件2112a可以相同地构造为压电致动器。
在此需要指出,在本申请中,“上”和“下”这样的表述,只用于在名称上区别同类零部件,而不必然代表零部件的实际方位,而只是表达彼此相对的位置关系,即带有“上”和“下”前缀的名称代表基于摩擦板彼此相对的零部件。例如,第一上驱动元件2111a和第一下驱动元件2112a是基于第一摩擦板2213a彼此相对的,即设在第一摩擦板2213a的相对两侧。
第一上驱动元件2111a包括第一压电陶瓷板21111a和第一摩擦驱动部21112a,第一下驱动元件2112a包括第二压电陶瓷板21121a和第二摩擦驱动部21122a。所述第一摩擦板2213a被第一上驱动元件2111a的第一摩擦驱动部21112a与第一下驱动元件2112a的第二摩擦驱动部21122a夹持,通过所述第一摩擦驱动部21112a与所述第二摩擦驱动部21122a在两侧协同驱动第一摩擦板2213a,实现所述第一载体221a沿光轴方向或者说沿调整方向移动。
所述第一上驱动元件2111a与所述第一下驱动元件2112a设置于第一预压力装置2301a内,通过第一预压力装置2301a的夹持作用使得所述第一上驱动元件2111a、第一下驱动元件2112a与所述第一摩擦板2213a压在一起。即第一预压力装置2301a提供一沿垂直于所述第一摩擦板2213a的摩擦面的预压力,并能够保持所述第一上驱动元件2111a、第一下驱动元件2112a同时与所述第一摩擦板2213a摩擦接触。第一上驱动元件2111a的第一摩擦驱动部21112a与第一下驱动元件2112a的第二摩擦驱动部21122a的连线与第一摩擦板2213a的摩擦面垂直。这种设置方式可以使得所述第一上驱动元件2111a和第一下驱动元件2112a能够同时驱动所述第一摩擦板2213a移动,为所述第一载体221a移动提供更大的推力,进而产生更大的移动行程,最大行程可达到7mm。
此外,通过第一上驱动元件2111a与第一下驱动元件2112a将所述第一摩擦板2213a夹持的结构,能够使得所述第一载体221a在所述驱动组件20a中保持平稳,避免了晃动的风险。所述第一上驱动元件2111a与第一下驱动元件2112a产生的夹持力的方向与驱动力的方向互相垂直。
具体地,第一上驱动元件2111a的第一压电陶瓷板21111a与第一预压力装置2301a固定连接,第一上驱动元件2111a的第一摩擦驱动部21112a与所述第一摩擦板2213a的上(下)摩擦面在预压力的作用下摩擦接触;第一下驱动元件2112a的第二压电陶瓷板21121a与第一预压力装置2301a固定连接,第一下驱动元件2112a的第二摩擦驱动部21122a与所述第一摩擦板2213a的下(上)摩擦面在预压力的作用下摩擦接触,由此所述第一摩擦板2213a可以在第一摩擦驱动部21112a与第二摩擦驱动部21122a的共同作用下沿光轴方向或者说沿调整方向移动。
由于所述第一上驱动元件2111a和第一下驱动元件2112a的驱动力通过摩擦传递至第一摩擦板 2213a,所述第一摩擦板2213a受到驱动而产生移动,而且这一过程中不会对压电致动器产生影响,因此可以延长所述压电致动器的使用寿命。
所述第一上驱动元件2111a与所述第一下驱动元件2112a可以分别控制,使得驱动过程中的调试更加简单。为所述第一上驱动元件2111a和所述第一下驱动元件2112a提供相同的电源激励后,所述第一上驱动元件2111a的第一压电陶瓷板21111a与第一下驱动元件2112a的第二压电陶瓷板21121a产生与所述摩擦面对称的行波状态的面型变化,从而带动第一上驱动元件2111a的第一摩擦驱动部21112a和第一下驱动元件2112a的第二摩擦驱动部21122a产生同步的单向偏摆往复运动。
具体地,当所述第一上驱动元件2111a和第一下驱动元件2112a被激励后,第一上驱动元件2111a的第一摩擦驱动部21112a和第一下驱动元件2112a的第二摩擦驱动部21122a都与所述第一摩擦板2213a摩擦接触,第一上驱动元件2111a的第一压电陶瓷板21111a和第一下驱动元件2112a的第二压电陶瓷板21121a产生相同的行波状态的面型变化,第一上驱动元件2111a的第一摩擦驱动部21112a和第一下驱动元件2112a的第二摩擦驱动部21122a在带动下沿光轴方向或者说沿调整方向发生偏摆运动,从而带动所述第一载体221a的第一摩擦板2213a沿光轴方向或者说沿调整方向移动。
当一个运动周期完成后,将第一上驱动元件2111a的第一压电陶瓷板21111a和第一下驱动元件2112a的第二压电陶瓷板21121a提起,从第一上驱动元件2111a的第一摩擦驱动部21112a和第一下驱动元件2112a的第二摩擦驱动部21122a与所述第一摩擦板2213a分离到第一上驱动元件2111a的第一摩擦驱动部21112a和第一下驱动元件2112a的第二摩擦驱动部21122a与所述第一摩擦板2213a再次摩擦接触,第一上驱动元件2111a的第一摩擦驱动部21112a和第一下驱动元件2112a的第二摩擦驱动部21122a分别在所述第一压电陶瓷板21111a和第二压电陶瓷板21121a的带动下重新定位并沿光轴方向或者说沿调整方向再次发生偏摆运动,进而驱动所述第一摩擦板2213a继续沿光轴方向或者说沿调整方向移动。
由于所述第一上驱动元件2111a与第一下驱动元件2112a的振动频率相同,因此降低了产生干涉的概率。并且,在停止施加电压后,所述第一上驱动元件2111a与第一下驱动元件2112a可以形成一自锁结构,将第一摩擦板2213a和第一载体221a保持在当前位置,而不会随着外部的晃动而造成位置改变,进而使得所述可变焦摄像模组100a的光学系统保持不变,进而避免了成像效果造成影响。也省去了在可变焦摄像模组100a中追加自锁装置,相对地减小了可变焦摄像模组100a的尺寸。由于所述第一上驱动元件2111a和第一下驱动元件2112a形成的自锁结构,因此无需保持压电致动器激活以保持其位置。
如图85和图90b所示,第二驱动元件212a包括一个第二上驱动元件2121a和一个第二下驱动元件2122a,其中第二上驱动元件2121a与第二下驱动元件2122a位于所述驱动组件20a的同一侧,并且第二上驱动元件2121a与第二下驱动元件2122a相对第二摩擦板2223a对称设置。
第二上驱动元件2121a包括第三压电陶瓷板21212a和第三摩擦驱动部21211a,所述第二下驱动元件2122a包括第四压电陶瓷板21222a和第四摩擦驱动部21221a。所述第二摩擦板2223a被第二上驱动元件2121a的第三摩擦驱动部21211a与第二下驱动元件2122a的第四摩擦驱动部21221a夹持,通过第二上驱动元件2121a的第三摩擦驱动部21211a与第二下驱动元件2122a的第四摩擦驱动部21221a 的协同驱动以实现所述第二载体222a沿光轴方向或者说沿调整方向移动。
所述第二上驱动元件2121a与所述第二下驱动元件2122a设置于第二预压力装置2302a内,通过第二预压力装置2302a的夹持作用使得所述第二上驱动元件2121a和第二下驱动元件2122a与所述第二摩擦板2223a压在一起。即第二预压力装置2302a提供一沿垂直于所述第二摩擦板2223a的摩擦面的预压力,第二预压力装置2302a能够保持所述第二上驱动元件2121a和第二下驱动元件2122a同时与所述第二摩擦板2223a摩擦接触。
所述第二上驱动元件2121a的第三摩擦驱动部21211a与第二下驱动元件2122a的第四摩擦驱动部21221a的连线与第二摩擦板2223a的摩擦面垂直。这种设置方式可以使得所述第二上驱动元件2121a和第二下驱动元件2122a能够同时驱动所述第二摩擦板2223a移动,为所述第二载体222a移动提供更大的推力,进而产生更大的移动行程,最大行程可达到7mm。
此外,通过第二上驱动元件2121a与第二下驱动元件2122a将所述第二摩擦板2223a夹持的结构,能够使得所述第二载体222a在所述驱动组件20a中保持平稳,避免了晃动的风险。所述第二上驱动元件2121a与第二下驱动元件2122a产生的夹持力的方向与驱动力的方向互相垂直。
具体地,第二上驱动元件2121a的第三压电陶瓷板21212a与第二预压力装置2302a固定连接,第二上驱动元件2121a的第三摩擦驱动部21211a与所述第二摩擦板2223a的上(下)摩擦面在预压力的作用下摩擦接触;第二下驱动元件2122a的第四压电陶瓷板21222a与第二预压力装置2302a固定连接,第二下驱动元件2122a的第四摩擦驱动部21221a与所述第二摩擦板2223a的下(上)摩擦面在预压力的作用下摩擦接触,所述第二摩擦板2223a可以在第二上驱动元件2121a的第三摩擦驱动部21211a与第二下驱动元件2122a的第四摩擦驱动部21221a的协同作用下沿光轴方向或者说沿调整方向移动。
由于所述第二上驱动元件2121a和第二下驱动元件2122a的驱动力通过摩擦传递至第二摩擦板2223a,所述第二摩擦板2223a受到驱动而产生移动,而且这一过程中不会对压电致动器产生影响,因此可以延长所述压电致动器的使用寿命。
所述第二上驱动元件2121a与所述第二下驱动元件2122a可以分别控制,使得驱动过程中的调试更加简单。为所述第二上驱动元件2121a和所述第二下驱动元件2122a提供相同的电源激励后,第二上驱动元件2121a的第三压电陶瓷板21212a与第二下驱动元件2122a的第四压电陶瓷板21222a产生与所述摩擦面对称的行波状态的面型变化,从而带动第二上驱动元件2121a的第三摩擦驱动部21211a和第二下驱动元件2122a的第四摩擦驱动部21221a产生同步的单向偏摆往复运动。
由于所述第二上驱动元件2121a与第二下驱动元件2122a的振动频率相同,因此降低了产生干涉的概率。并且,在停止施加电压后,所述第二上驱动元件2121a与第二下驱动元件2122a可以形成一自锁结构,将第二摩擦板2223a和第二载体222a保持在当前位置,而不会随着外部的晃动而造成位置改变,进而使得所述可变焦摄像模组100a的光学系统保持不变,进而避免了成像效果造成影响。也省去了在可变焦摄像模组100a中追加自锁装置,相对地减小了可变焦摄像模组100a的尺寸。由于所述第二上驱动元件2121a和第二下驱动元件2122a形成的自锁结构,因此无需保持压电致动器激活以保持其位置。
如图90a-b所示,第一驱动元件211a与第二驱动元件212a分别设置于所述变焦镜头组10a的相对的第一侧和第二侧,所述第一侧和第二侧相对于第一载体和第二载体的共同轴线彼此相对。
在本申请的一些实施例中,如图90b所示,第一上驱动元件2111a和第一下驱动元件2112a以及夹持在第一上驱动元件2111a和第一下驱动元件2112a之间的第一摩擦板2213a的整体高度h不大于第一载体221a的载体主体2211a的整体高度,尤其是不大于镜头组的最大高度,并且第二上驱动元件2121a和第二下驱动元件2122a以及夹持在第二上驱动元件2121a和第二下驱动元件2122a之间的第二摩擦板2223a的整体高度h不大于第二载体222a的载体主体2221a的整体高度,尤其是不大于镜头组的最大高度。
在本申请的另一些实施例中,如图90a所示,第一驱动元件211a和第一摩擦机构2151a以及夹持在第一驱动元件211a和第一摩擦机构2151a之间的第一摩擦板2213a的整体高度h不大于第一载体221a的载体主体2211a的整体高度,尤其是不大于镜头组的最大高度,并且第二驱动元件212a和第二摩擦机构2152a以及夹持在第二驱动元件212a和第二摩擦机构2152a之间的第二摩擦板2223a的整体高度h也不大于第二载体222a的载体主体2221a的整体高度,尤其是不大于镜头组的最大高度。
需要指出,对于用于驱动镜头的驱动组件20a而言,可调群组通常安装于驱动载体的载体主体的容纳腔中,因此前述不大于驱动载体的载体主体的最大高度,也就确保了这个整体结构高度不大于或者基本上不会显著大于镜头组的最大高度,这有利地减小了整个摄像模组的结构高度。
还需要指出,这里的高度h是指第一上驱动元件2111a、第一下驱动元件2112a以及夹持在第一上驱动元件2111a和第一下驱动元件2112a之间的第一摩擦板2213a三者在叠加方向上的形成的结构尺寸,在图90b中以高度h表示。这里关于高度的定义也同样适用于图90a示出的实施例。
由于在可变焦摄像模组100a中,所述变焦镜头组10a的高度难以降低,因此本申请中避免在所述变焦镜头组10a高度的基础上继续增加所述可变焦摄像模组100a的高度。
在一些实施例中,如图86至图87所示,所述第一预压力装置2301a和第二预压力装置2302a分别包括上夹部231a、下夹部233a以及连接所述上夹部231a和下夹部233a的连接部232a。
第一预压力装置2301a可以将第一摩擦板2213a以及布置在第一摩擦板2213a两侧的第一驱动元件211a和第一摩擦机构2151a(或者布置在第一摩擦板2213a两侧的第一上驱动元件2111a和第一下驱动元件2112a)弹性夹持在第一预压力装置2301a的上夹部231a和下夹部233a之间,通过上夹部231a与下夹部233a之间的夹持力保持第一驱动元件211a和第一摩擦机构2151a(或者第一上驱动元件2111a和第一下驱动元件2112a)与第一摩擦板2213a摩擦接触,以使得所述驱动元件能够驱动第一摩擦板2213a移动,进而带动第一载体221a移动。
作为示例,对于在第一摩擦板2213a两侧布置第一上驱动元件2111a和第一下驱动元件2112a的实施例,第一预压力装置2301a的上夹部231a可以连接于第一上驱动元件2111a的第一压电陶瓷板21111a,第一预压力装置2301a的下夹部233a可以连接于第一下驱动元件2112a的第二压电陶瓷板21121a,由此第一上驱动元件2111a的第一摩擦驱动部21112a与第一下驱动元件2112a的第二摩擦驱动部21122a都压向第一摩擦板2213a,并通过第一预压力装置2301a的上夹部231a与下夹部233a之间的夹持力作用使得第一上驱动元件2111a的第一摩擦驱动部21112a与第一下驱动元件2112a的第二 摩擦驱动部21122a与第一摩擦板2213a保持摩擦接触。
与前面描述的第一预压力装置2301a相应,第二预压力装置2302a可以将第二摩擦板2223a以及布置在第二摩擦板2223a两侧的第二驱动元件212a和第二摩擦机构2152a(或者布置在第二摩擦板2223a两侧的第二上驱动元件2121a和第二下驱动元件2122a)弹性夹持在第二预压力装置2302a的上夹部231a和下夹部233a之间。通过上夹部231a与下夹部233a之间的夹持力保持第二驱动元件212a和第二摩擦机构2152a(或者第二上驱动元件2121a和第二下驱动元件2122a)与第二摩擦板2223a摩擦接触,以使得所述驱动元件能够驱动第二摩擦板2223a移动,进而带动第二载体222a移动。上面结合第一预压力装置2301a描述的结构和特征,同样类似地适用于第二预压力装置2302a,在此不再赘述。
第一预压力装置2301a和第二预压力装置2302a分别设置于所述驱动组件20a的第一侧与第二侧,其中驱动组件20a的第一侧与第二侧基于光轴彼此相对。同样,第一预压力装置2301a作用于第一驱动元件211a,第二预压力装置2302a作用于第二驱动元件212a,以使得第一驱动元件211a可以在第一预压力装置2301a的作用下与第一摩擦板2213a紧密接触,以保持摩擦,并且第二驱动元件212a都可以在第二预压力装置2302a的作用下与第二摩擦板2223a紧密接触,以保持摩擦。
第一预压力装置2301a和第二预压力装置2302a可以具有相同的结构,例如可以为有一定弹性的钢板,并通过所述上夹部231a和下夹部233a之间的弹性为所述驱动元件21a提供一定的预压力。
在本申请一些实施例中,如图89和图90a所示,在第一预压力装置2301a与第一驱动元件211a之间设置第一驱动基板271a,第一驱动基板271a与第一驱动元件211a电连接,用于给第一驱动元件211a输送电流,其中第一驱动基板271a通过第一预压力装置2301a夹持在第一驱动元件211a上,并且
在第二预压力装置2302a与第二驱动元件212a之间设置第二驱动基板272a,第二驱动基板272a与第二驱动元件212a电连接,用于给第二驱动元件212a输送电流,其中第二驱动基板272a通过第二预压力装置2302a夹持在第二驱动元件212a上。
图88是根据本申请的一些实施例的驱动基板的立体图。如附图88所示,所述驱动基板27a包括一个第一驱动基板271a和一个第二驱动基板272a,所述第一驱动基板271a和所述第二驱动基板272a分别与第一驱动元件211a(变焦驱动元件211a)和第二驱动元件212a(对焦驱动元件212a)电连接,以实现所述驱动组件20a的电路导通。因此,第一驱动基板271a也可以称为变焦基板271a,第二驱动基板272a也可以称为对焦基板272a。
如图89所示,作为示例,所述第一驱动基板271a可以设置于第一预压力装置2301a与第一驱动元件211a之间,通过第一预压力装置2301a将第一驱动基板271a夹持于第一驱动元件211a上,以使得第一驱动基板271a与压电元件的压电陶瓷板电连接。所述第二驱动基板272a可以设置于第二预压力装置2302a与第二驱动元件212a之间,通过第二预压力装置2302a将第二驱动基板272a夹持于第二驱动元件212a上,以使得第二驱动基板272a与所述压电元件的压电陶瓷板电连接。
所述第一驱动基板271a与所述第二驱动基板272a可以沿所述光轴设置于所述驱动组件20a的彼此相对的第一侧和第二侧。
在一些实施例中,如图88所示,第一驱动基板271a包括第一导电端2711a、第二导电端2712a以及连接所述第一导电端2711a和第二导电端2712a的连接带2713a。例如参见附图90b,第一驱动基板271a的第一导电端2711a可以通过第一预压力装置2301a的上夹部231a夹持在第一上驱动元件2111a上,所述第一驱动基板271a的第二导电端2712a可以通过第一预压力装置2301a的下夹部233a夹持在第一下驱动元件2112a上。
类似地,第二驱动基板272a包括第三导电端2721a、第四导电端2722a以及连接所述第三导电端2721a和第四导电端2722a的连接带2723a,其中第二驱动基板272a的第三导电端2721a通过第二预压力装置2302a的下夹部233a夹持在第二下驱动元件2122a上,所述第二驱动基板272a的第四导电端2722a通过第二预压力装置的上夹部231a夹持在第二上驱动元件2121a上。
具体地,第一驱动基板271a的第一导电端2711a通过第一预压力装置2301a的上夹部231a安置于第一上驱动元件2111a的第一压电陶瓷板21111a,第一驱动基板271a的第二导电端2712a通过第一预压力装置2301a的下夹部233a安置于第一下驱动元件2112a的第二压电陶瓷板21121a,并且第一驱动基板271a的第二导电端2712a沿朝向所述感光组件30a的方向延伸,以电连接于所述线路板31a。对应的结构也适用于第二驱动基板272a,在此不再赘述。
如图90a-b所示,第一驱动基板271a的第二导电端2712a还设置有第一延伸部27121a,所述第一延伸部27121a向内(朝向光轴)延伸,并基于第一摩擦板2213a所在平面与所述第一导杆241a相对。也就是说,当所述第一导杆241a设置于所述第一载体221a的上方,所述第一延伸部27121a设置于第一摩擦板2213a的下方,所述第一导杆241a与所述第一延伸部27121a基于第一摩擦板2213a彼此相对,以充分利用所述驱动组件20a的空间位置,有利于所述可变焦摄像模组100a的集成化。
进一步,所述第一延伸部27121a上可以设置有位置感测元件28a,在所述第一摩擦板2213a上与所述位置感测元件28a相对的位置设置感测磁铁,通过该位置感测元件28a检测到所述感测磁铁的位置变化。当然,在本申请中,也可以在感测到所述感测磁铁位置移动后,将移动的信息继续传递至一处理元件,并由处理元件判断和处理所述活动载体的移动信息,以形成一闭环结构。所述位置感测元件28a可以为霍尔元件、驱动IC与霍尔元件的集成体或其他位置感测元件28a。
第二导电端2712a的第一延伸部27121a与所述第二导电端2712a的本体可以具有一定高度差,即所述第一延伸部27121a可以低于所述第二导电端2712a的本体,或者说第一延伸部27121a在远离第一载体221a的方向上偏移,以为所述感测磁铁与所述位置感测元件28a提供一定的移动空间。
与第一驱动基板271a的结构相同,第二驱动基板272a的第三导电端2721a通过所述预压力装置23a的下夹部233a安置于第二下驱动元件2122a的第四压电陶瓷板21222a,第二驱动基板272a的第四导电端2722a通过所述预压力装置23a的上夹部231a安置于第二上驱动元件2121a的第三压电陶瓷板21212a,并且所述第四导电端2722a沿朝向所述感光组件30a的方向延伸,以电连接于所述线路板31a。
进一步,所述第四导电端2722a还设置有第二延伸部27221a,所述第二延伸部27221a向内(朝向光轴)延伸,并基于第二摩擦板2223a所在平面与所述第二导杆242a相对。也就是说,当所述第二导杆242a设置于所述第二载体222a的下方,所述第二延伸部27221a设置于第二摩擦板2223a的上 方,第二导杆242a与所述第二延伸部27221a基于第二摩擦板2223a彼此相对,即所述第二导杆242a与所述第二延伸部27221a基于第二摩擦板2223a对称设置,以充分利用所述驱动组件20a的空间位置,有利于所述可变焦摄像模组100a的集成化。
进一步,在第二驱动基板272a的第二延伸部27221a上可以设置有位置感测元件28a,在第二摩擦板2223a上与所述位置感测元件28a相对的位置设置感测磁铁,通过该位置感测元件28a检测到所述感测磁铁的位置变化。当然,在本申请中,也可以在感测到所述感测磁铁位置移动后,将移动的信息继续传递至一处理元件,并由处理元件判断和处理所述活动载体的移动信息,以形成一闭环结构。所述位置感测元件28a可以为霍尔元件、驱动IC与霍尔元件的集成体或其他位置感测元件28a。
第四导电端2722a的第二延伸部27221a与所述第四导电端2722a的本体可以具有一定高度差,即所述第二延伸部27221a可以高于所述第四导电端2722a的本体,或者说第二延伸部27221a在远离第二载体222a的方向上偏移,以为所述感测磁铁与所述位置感测元件28a提供一定的移动空间。
在一些实施例中,所述第一驱动基板271a与所述第二驱动基板272a沿光轴方向观察或者说沿调整方向观察成中心对称,这不仅能够简化所述驱动基板27a的结构设计,而且能够配合所述驱动组件20a中的其他元件,为其他元件提供一定的避让空间,使得所述驱动组件20a的结构更加紧凑。
在一些实施例中,如图91至图92所示,对于包括第一载体221a和第二载体222a的情况,所述驱动组件20a还可以对应地包括第一承载机构2501a和第二承载机构2502a。
第一承载机构2501a和第二承载机构2502a可以构造成相同的结构形式。在图92中,第一承载机构2501a和第二承载机构2502a分别具有形成安置空间的多个定位柱251a,尤其是分别具有四个定位柱251a,这四个定位柱251a呈布置在一个矩形的四个角上。
第一驱动元件211a在第一预压力装置2301a的夹持下设置在第一承载机构2501a的安置空间中,并且第一驱动基板271a的第一导电端2711a和第二导电端2712a分别在第一承载机构2501a的安置空间外部固定在第一承载机构2501a的定位柱251a上。
类似地,第二驱动元件212a在第二预压力装置2302a的夹持下设置在第二承载机构2502a的安置空间中,并且第二驱动基板272a的第三导电端2721a和第四导电端2722a分别在第二承载机构2502a的安置空间外部固定在第二承载机构2502a的定位柱251a上。
第一承载机构2501a设置于第一预压力装置2301a与驱动壳体26a之间,以通过第一承载机构2501a将第一驱动元件211a固定连接于所述驱动壳体26a上。
第一驱动元件211a通过第一预压力装置2301a夹持于第一承载机构2501a内,并通过第一承载机构2501a为第一驱动元件211a提供一定的支撑和固定。类似地,第二驱动元件212a通过第二预压力装置2302a夹持于第二承载机构2502a内,并通过第二承载机构2502a为第二驱动元件212a提供一定的支撑和固定。
下面以承载机构25a为例,结合图92,说明承载机构的结构和布置方式,其同样适用于第一承载机构2501a和第二承载机构2502a。
承载机构25a可以包括例如矩形的本体和从本体伸出的多个定位柱251a,所述定位柱在安装状态下例如朝向光轴或者说朝向驱动载体22a的载体主体延伸。所述多个定位柱251a形成U形开口的安 置空间。
具体地,如图92所示,所述承载机构25a上设置有例如四个定位柱251a。所述驱动基板27a可以设置于所述承载机构25a的所述四个定位柱上,并且将所述驱动基板27a与所述驱动元件21a电连接,所述承载机构25a能够为所述驱动基板27a提供一个具有良好平整度的安装平面。
具体地,驱动基板27a的第一导电端和第二导电端可以分别在外侧通过粘胶或焊接的方式固定于所述承载机构25a的所述四个定位柱251a上,也参见图89。在安装状态下,驱动基板27a的第一导电端和第二导电端彼此平行,并平行于驱动组件20a的调整方向,即平行于镜头组的光轴方向。需要指出,定位柱251a的数量和结构形式可以根据需要设定和改变,而不限于示例给出的形式。
同样,对于前述的第一驱动基板271a和第二驱动基板272a,第一承载机构2501a和第二承载机构2502a能够分别限定第一驱动基板271a的第一导电端2711a和第二导电端2712a的长度、连接带2713a的连接宽度以及第二驱动基板272a的第三导电端2721a和第四导电端2722a的长度、连接带2723a的连接宽度。在此,所述长度为沿光轴方向或者说沿调整方向的尺寸,所述宽度为沿高度方向的尺寸。即所述承载机构25a的长度和高度为所述驱动基板27a的长度和高度提供参考依据。
可选地,承载机构25a还包括承载连接部252a,所述承载连接部252a同样从承载机构25a的本体伸出,但与承载机构25a的定位柱251a反向伸出,即定位柱251a和承载连接部252a处在承载机构25a的本体的两个相对侧面上。所述承载连接部252a用于与驱动壳体26a固定连接,其中所述驱动壳体26a包括上壳体261a和与所述上壳体261a连接成封闭结构的下壳体262a。具体地,如图93所示,在所述承载机构25a背向所述光轴的一侧设置有凸出于所述承载机构25a的承载连接部252a,所述承载连接部252a固定于所述驱动壳体26a,并裸露于所述驱动壳体26a的外表面,以将所述承载机构25a与所述驱动壳体26a固定。
如图91至图92所示,承载机构25a的定位柱251a都朝向于对应的驱动载体或者说横向于光轴伸出,由此所述承载机构25a的四个定位柱251a形成安置空间。所述驱动元件21a可以通过所述预压力装置23a被夹持地设置于所述承载机构25a的安置空间内,于是所述预压力装置23a嵌入于所述承载机构25a内。因此,所述承载机构25a既能够为所述驱动元件21a和所述预压力装置23a提供支撑,也能使所述驱动元件21a和所述预压力装置23a的位置固定。
所述承载机构25a设置于所述预压力装置23a与所述驱动壳体26a之间,所述承载机构25a的承载连接部252a与所述驱动壳体26a固定,通过所述承载机构25a以将所述驱动元件21a、所述预压力装置23a与所述驱动壳体26a固定连接。
图93是根据本申请的一些实施例的驱动组件20a的立体图,包括具有上壳体261a和下壳体262a的驱动壳体26a。所述驱动壳体26a用于将所述驱动元件21a、驱动载体22a、摩擦板、预压力装置23a、摩擦机构215a、导引装置24a、承载机构25a、驱动基板27a等零部件容纳其中,用于对各个元件形成保护,并且能够防止灰尘落入。
如图93所示,所述驱动壳体26a包括一个上壳体261a和一个下壳体262a,所述下壳体262a为一具有朝上开口的U形槽结构,使得所述驱动组件20a中的其他元件能够由开口直接放入所述驱动壳体26a内。
所述下壳体262a的外侧壁设置有连接槽2623a,所述承载机构25a的承载连接部252a可以嵌卡在连接槽2623a内,以进行固定。可选地,所述承载机构25a的承载连接部252a构造为T形的插入件,其可以嵌入所述下壳体262a的连接槽2623a内以进行固定。
此外,如图93所示,所述下壳体262a的侧壁上还可以设置有高度不同的重叠槽,所述重叠槽包括内重叠槽2621a和外重叠槽2622a,所述内重叠槽2621a的高度高于所述外重叠槽2622a的高度,这使得外重叠槽2622a没有遮挡住的光线会被内重叠槽2621a遮挡,以避免了杂光的进入。
根据本发明的另一方面,还提出一种摄像模组100a,其包括:
如前所述各种实施例给出的用于驱动镜头的驱动组件20a;
感光组件30a,用于接受光信号并将接收的光信号转变为图像信号;
镜头组10a,包括固定群组11a和可调群组,其中所述驱动组件20a的驱动元件21a设置用于驱动所述镜头组10a的可调群组。
可选地,所述镜头组10a的可调群组包括变焦群组11a和对焦群组12a,其中所述驱动组件20a的驱动载体22a包括用于承载变焦群组11a的第一载体221a和用于承载对焦群组12a的第二载体222a,其中第一载体221a和第二载体222a沿调整方向同轴地依次布置,并能够被单独驱动。
根据本申请,所述摄像模组100a采用在此提出的包括尤其是压电致动器的驱动组件20a作为驱动器,不仅能够提供足够大的驱动力,而且,能够提供精度更高和行程更长的驱动性能,以满足所述可变焦摄像模组100a的变焦需求。
进一步地,驱动组件20a的压电致动器可以具有相对较小的尺寸,以更好地适配于摄像模组轻型化和薄型化的发展趋势。并且,所述可变焦摄像模组100a采用合理的布设方案将所述压电致动器布设于驱动组件20a中,以满足可变焦摄像模组100a的结构和尺寸要求。
图94是根据本申请的一些实施例的用于驱动镜头的驱动组件20a的组装方法的流程示意图。如图94所示,在此提出用于驱动镜头的驱动组件20a的组装方法包括以下步骤:
S1.将预压力装置23a嵌入于承载机构25a,以将所述预压力装置23a与所述承载机构25a固定连接;
S2.将两个驱动元件21a电连接于驱动基板27a,其中;
S3.将驱动基板27a安放到预压力装置23a的上夹部与下夹部之间;
S4.将摩擦板放入两个驱动元件21a之间,使摩擦板与驱动载体22a固定连接,并通过预压力装置23a夹持两个驱动元件21a,使其分别与摩擦板保持摩擦接触;
S5.将所述承载机构25a与驱动壳体26a固定连接。
具体地,在步骤S1中,将所述预压力装置23a嵌入于所述承载机构25a,以将所述预压力装置23a与所述承载机构25a固定连接。在此,预压力装置23a利用其自身的结构弹性或者材料弹性,嵌卡到承载机构25a的由多个定位柱251a形成的安置空间中,并固定在其内。
在步骤S2中,将所述驱动元件21a电连接于所述驱动基板27a。该步骤中,将两个驱动元件21a的压电板、例如压电陶瓷板213a分别电连接于所述驱动基板27a的第一导电端和第二导电端,并使得两个驱动元件21a的摩擦驱动部214a相对设置。在后面的步骤中,还会利用预压力装置23a,将驱动 基板27a夹持到驱动元件21a上。
在步骤S3中,将驱动基板27a设置于预压力装置23a的上夹部231a与下夹部233a之间。在该步骤中,将上夹部231a和下夹部233a分别与驱动基板27a的第一导电端和第二导电端分别固定,通过预压力装置23a的上夹部231a与下夹部233a将驱动基板27a和驱动元件21a夹持于预压力装置23a中,并且进一步将驱动元件21a设置于承载机构25a的安置空间中。
在步骤S4中,将摩擦板放入两个驱动元件21a的摩擦驱动部214a之间,通过预压力装置23a使得两个驱动元件21a的摩擦驱动部214a分别在两侧夹持摩擦板,并与摩擦板保持摩擦接触。
此外,在步骤S4中,还可以将驱动基板27a的第一导电端和第二导电端分别在侧面固定在承载机构25a的定位柱251a上。
在步骤S5中,将上述步骤组装而成的半成品,即预组装的零部件,放入驱动壳体26a的下壳体262a内,并将承载结构25a的承载连接部252a嵌入到所述下壳体262a的连接槽2623a内,以将预组装的零部件通过承载结构25a与所述下壳体262a进行固定。然后,将上壳体261a安装于下壳体262a,以完成驱动组件20a的组装。
需要指出,上述组装方法的工作步骤也同样适用于包含摩擦机构215a的驱动组件20a,其区别仅在于以一个摩擦机构215a替换其中一个驱动元件21a。在此情况下,由于摩擦机构215a不需要与驱动基板27a电连接,因此驱动基板27a的结构和电连接步骤可以相应简化。同样,上述组装方法的工作步骤也同样适用于包括一个或者多个驱动载体22a的驱动组件20a,尤其对于多个驱动载体,只需重复相应的安装步骤。
图95是根据本申请的一些实施例的摄像模组100a的组装方法。如图95所示,根据本申请的另一方面,本申请还公开了一种可变焦摄像模组100a的组装方法,包括以下步骤:
S1.将镜头组10a的变焦群组12a和对焦群组13a分别设置在驱动组件20a的第一载体221a和第二载体222a内;
S2.将感光组件30a设置于镜头组10a的出光侧;
S3.将驱动组件20a的驱动基板27a电连接于感光组件30a的线路板31a,实现电路导通。
具体地,在步骤S1中,将变焦群组12a和对焦群组13a分别设置于驱动组件20a的第一载体221a和第二载体222a内,然后如上所述完成驱动组件20a的组装步骤。
在此,可以调整变焦群组12a和对焦群组13a的光轴方位,使其与第一载体221a和第二载体222a的调整方向同轴,或者与第一载体221a和第二载体222a的几何轴线同轴。
在步骤S2中,还可以将光转折元件40a设置于所述变焦镜头组10a的入光侧,感光组件30a设置于变焦镜头组10a的出光侧。
在步骤S3中,将驱动组件20a的驱动基板27a电连接于感光组件30a的线路板31a,实现电路导通。在此,在线路板31a上可以预组装感光芯片32a和电子元件33a等。
本申请的技术范围不仅仅局限于上述说明中的内容,本领域技术人员可以在不脱离本申请技术思想的前提下,对上述实施例进行多种变形和修改,而这些变形和修改均属于本申请的保护范围。
Claims (250)
- 一种防抖驱动组件,其特征在于,包括:防抖固定部;防抖可动部,其中,包括感光芯片的感光组件适于可联动地安装于所述防抖可动部;以及设置于所述防抖固定部和所述防抖可动部之间的防抖驱动部,所述防抖驱动部包括摩擦地耦接于所述防抖可动部的第一压电致动器和第二压电致动器;其中,所述第一压电致动器和所述第二压电致动器相互平行地布设于该感光组件的相对的两侧,且所述第一压电致动器和所述第二压电致动器适于作动所述防抖可动部和该感光组件在X轴和Y轴所设定的XOY平面内移动或绕着垂直于所述X轴和所述Y轴的Z轴在所述XOY平面内旋转。
- 根据权利要求1所述的防抖驱动组件,其中,所述第一压电致动器和所述第二压电致动器相对于该感光组件以所述X轴或者所述Y轴为对称轴被对称地布置于该感光组件的相对的两侧。
- 根据权利要求2所述的防抖驱动组件,其中,所述第一压电致动器和所述第二压电致动器为行波式压电致动器,其中,所述第一压电致动器包括第一压电陶瓷板和突出于所述第一压电陶瓷板的第一摩擦驱动部,所述第一压电陶瓷板适于在被电驱动后发生形变以带动所述第一摩擦驱动部做单向偏摆往复运动;其中,所述第二压电致动器包括第二压电陶瓷板和突出于所述第二压电陶瓷板的第二摩擦驱动部,所述第二压电陶瓷板适于在被电驱动后发生形变以带动所述第二摩擦驱动部做单向偏摆往复运动。
- 根据权利要求3所述的防抖驱动组件,其中,所述第一压电致动器适于沿着所述X轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动,且所述第二压电致动器适于沿着所述X轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动;其中,所述第一压电致动器适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动,且所述第二压电致动器适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动;其中,所述第一压电致动器适于沿着所述X轴所设定的第一方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的第一方向进行移动,且所述第二压电致动器适于沿着所述X轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的第二方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动该感光组件绕所述Z轴在所述XOY平面内进行旋转;其中,所述第一压电致动器适于沿着所述Y轴所设定的第一方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的第一方向进行移动,且所述第二压电致动器适于沿着所述Y轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的第二方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动该感光组件绕所述Z轴在所述XOY平面内进行旋转。
- 根据权利要求4所述的防抖驱动组件,其中,所述第一压电致动器和所述第二压电致动器具有长方形结构,其具有沿着长度方向的两条相对的长边和沿着宽度方向的两条相对的短边。
- 根据权利要求5所述的防抖驱动组件,其中,所述第一压电致动器和所述第二压电致动器的长度方向为所述X轴方向,所述第一压电致动器和所述第二压电致动器的短边方向为所述Y轴方向。
- 根据权利要求5所述的防抖驱动组件,其中,所述第一压电致动器和所述第二压电致动器的长度方向为所述Y轴方向,所述第一压电致动器和所述第二压电致动器的短边方向为所述X轴方向。
- 根据权利要求5所述的防抖驱动组件,其中,所述防抖可动部被平稳地支持于所述第一压电致动器的第一摩擦驱动部和所述第二压电致动器的第二摩擦驱动部上。
- 根据权利要求8所述的防抖驱动组件,其中,所述第一压电陶瓷板被设置于所述防抖固定部,所述第一摩擦驱动部摩擦地耦接于所述防抖可动部、所述第二压电陶瓷板被设置于所述防抖固定部,所述第二摩擦驱动部摩擦地耦接于所述防抖可动部。
- 根据权利要求9所述的防抖驱动组件,其中,所述第一压电致动器和所述第二压电致动器具有相同的高度尺寸。
- 根据权利要求10所述的防抖驱动组件,其中,所述第一压电致动器和所述第二压电致动器的高度尺寸为0.7mm-0.9mm。
- 根据权利要求8所述的防抖驱动组件,其中,所述防抖固定部具有收容腔,所述防抖可动部被悬持于所述防抖固定部的收容腔内。
- 根据权利要求12所述的防抖驱动组件,其中,所述防抖固定部包括基底和与所述基底相扣合的上盖,所述收容腔形成于所述上盖和所述基底之间。
- 根据权利要求13所述的防抖驱动组件,其中,所述防抖可动部与所述基底之间具有间隙,所述防抖可动部与所述上盖之间具有间隙,通过这样的方式,所述防抖可动部被悬持于所述防抖固定部的收容腔内。
- 根据权利要求14所述的防抖驱动组件,其中,所述防抖可动部包括载体主体和自所述载体主体向外延伸的载体延伸臂,其中,所述第一压电致动器的第一摩擦驱动部和所述第二压电致动器的第二摩擦驱动部摩擦地耦接于所述载体延伸臂的下表面。
- 根据权利要求15所述的防抖驱动组件,其中,所述载体主体具有低于所述载体延伸臂的安 置槽,其中,该感光组件适于安装于所述安置槽内。
- 根据权利要求15所述的防抖驱动组件,其中,所述载体延伸臂与所述基底之间具有容置空间,所述第一压电致动器和所述第二压电致动器被收容于所述容置空间内。
- 根据权利要求15所述的防抖驱动组件,其中,所述防抖可动部进一步包括形成于所述载体延伸臂的下表面的摩擦板,所述第一压电致动器的第一摩擦驱动部和所述第二压电致动器的第二摩擦驱动部摩擦地耦接于所述摩擦板。
- 根据权利要求18所述的防抖驱动组件,进一步包括设置于所述防抖可动部和所述基底之间的驱动基板,所述驱动基板包括至少一导电端和自所述导电端往外延伸的连接端,所述第一压电致动器和所述第二压电致动器电连接于所述至少一电连接端。
- 根据权利要求19所述的防抖驱动组件,其中,所述至少一导电端包括第一导电端和第二导电端,所述第一压电致动器电连接于所述第一导电端,所述第二压电致动器电连接于所述第二导电端。
- 根据权利要求19所述的防抖驱动组件,其中,所述防抖可动部具有形成于所述载体主体的侧壁的开槽,所述开槽被配置为允许该感光组件的线路板自所述开槽伸出所述安置槽。
- 根据权利要求21所述的防抖驱动组件,其中,所述基底具有形成于其侧壁的开口,其中,所述连接端自所述至少一导电端往外延伸并穿过所述开口。
- 根据权利要求22所述的防抖驱动组件,其中,所述开口和所述开槽具有高度差。
- 根据权利要求19所述的防抖驱动组件,进一步包括设置于所述防抖驱动部和所述防抖固定部之间的预压力装置,以通过所述预压力装置所提供的预压力迫使所述防抖驱动部摩擦地耦接于所述防抖可动部。
- 根据权利要求24所述的防抖驱动组件,其中,所述预压力装置包括设置于所述基底和所述第一压电致动器的第一压电陶瓷板之间的第一弹性元件,以通过所述第一弹性元件自身的弹力产生所述预压力以迫使所述第一压电致动器的第一摩擦驱动部抵触于所述摩擦板,通过这样的方式使得所述第一压电致动器的第一摩擦驱动部摩擦地耦接于所述摩擦板;所述预压力装置还包括设置于所述基底和所述第二压电致动器的第二压电陶瓷板之间的第二弹性元件,以通过所述第二弹性元件自身的弹力产生的所述预压力迫使所述第二压电致动器的第二摩擦驱动部抵触于所述摩擦板,通过这样的方式使得所述第二压电致动器的第二摩擦驱动部摩擦地耦接于所述摩擦板。
- 根据权利要求25所述的防抖驱动组件,其中,所述第一弹性元件和所述第二弹性元件的厚度尺寸为10um至50um。
- 根据权利要求25所述的防抖驱动组件,进一步包括设置于所述载体延伸臂的上表面和所述上盖之间的导引装置,所述导引装置适于导引所述防抖可动部在所述X轴和所述Y轴所设定的所述XOY平面内移动。
- 一种摄像模组,其特征在于,包括:光学镜头;感光组件,包括线路板和电连接于所述线路板的感光组件,其中,所述光学镜头被保持于所述感光组件的感光路径上;以及如权利要求1至27任一所述的防抖驱动组件,其中,所述感光组件被安装于所述防抖驱动组件的防抖可动部。
- 一种防抖驱动组件,其特征在于,包括:具有收容腔的防抖固定部;被悬持地设置于所述防抖固定部的收容腔内的防抖可动部,以通过所述防抖可动部将所述收容腔分为上部和下部,其中,所述防抖可动部适于安装感光组件于其上;设置于所述收容腔的下部的防抖驱动部,其中,所述防抖驱动部包括摩擦地耦接于所述防抖可动部的第一压电致动器和第二压电致动器,所述第一压电致动器和所述第二压电致动器适于作动所述防抖可动部在X轴和Y轴所设定的XOY平面内移动或绕着垂直于所述X轴和所述Y轴的Z轴在所述XOY平面内旋转;以及被夹持地设置于所述收容腔的上部的导引元件,其中,被夹持的所述导引元件产生迫使所述防抖可动部抵触于所述第一压电致动器和所述第二压电致动器的预压力以通过所述预压力使得所述第一压电致动器和所述第二压电致动器摩擦地耦接于所述防抖可动部。
- 根据权利要求29所述的防抖驱动组件,其中,所述防抖固定部包括基底和与所述基底相扣合的上盖,所述收容腔的上部形成于所述上盖和所述防抖可动部之间,所述收容腔的下部形成于所述基底和所述防抖可动部之间。
- 根据权利要求30所述的防抖驱动组件,其中,所述防抖可动部与所述基底之间具有间隙,所述防抖可动部与所述上盖之间具有间隙,通过这样的方式,所述防抖可动部被悬持于所述防抖固定部的收容腔内。
- 根据权利要求31所述的防抖驱动组件,其中,所述防抖可动部被平稳地夹持于所述第一压电致动器和所述导引元件之间以及所述第二压电致动器和所述导引元件之间。
- 根据权利要求32所述的防抖驱动组件,其中,所述防抖可动部包括载体主体和自所述载体主体向外延伸的载体延伸臂,其中,所述导引元件被夹持于所述上盖的下表面和所述载体延伸臂的上表面之间,所述第一压电致动器和所述第二压电致动器摩擦地耦接于所述载体延伸臂的下表面。
- 根据权利要求33所述的防抖驱动组件,其中,所述防抖可动部进一步包括形成于所述载体延伸臂的下表面的摩擦板,所述第一压电致动器和所述第二压电致动器摩擦地耦接于所述摩擦板。
- 根据权利要求34所述的防抖驱动组件,进一步包括凹陷地形成于所述载体延伸臂的上表面 的第一导引槽,所述导引元件被收容于所述第一导引槽内,所述导引元件和所述第一导引槽形成用于导引所述防抖可动部和该感光组件进行移动的导引装置,其中,所述导引元件的至少一部分突出于所述凹槽并抵触于所述上盖的下表面,通过这样的方式,所述导引元件被夹持于所述上盖的下表面和所述载体延伸臂的上表面之间。
- 根据权利要求35所述的防抖驱动组件,其中,所述导引元件为滚珠。
- 根据权利要求35所述的防抖驱动组件,其中,所述导引元件为滑块。
- 根据权利要求36所述的防抖驱动组件,其中,所述第一导引槽沿着所述X轴所设定的方向延伸,所述导引装置进一步包括凹陷地形成于所述上盖的下表面的第二导引槽,所述第二导引槽沿着所述Y轴所设定的方向延伸。
- 根据权利要求36所述的防抖驱动组件,其中,所述第一导引槽沿着所述Y轴所设定的方向延伸,所述导引装置进一步包括凹陷地形成于所述上盖的下表面的第二导引槽,所述第二导引槽沿着所述X轴所设定的方向延伸。
- 根据权利要求38或39所述的防抖驱动组件,其中,所述第一导引段和所述第二导引槽相对设置且相互交叉。
- 根据权利要求34所述的防抖驱动组件,其中,所述第一压电致动器和所述第二压电致动器具有相同的高度尺寸。
- 根据权利要求41所述的防抖驱动组件,其中,所述第一压电致动器和所述第二压电致动器的高度尺寸为0.7mm-0.9mm。
- 根据权利要求41所述的防抖驱动组件,其中,所述第一压电致动器和所述第二压电致动器为行波式压电致动器,其中,所述第一压电致动器包括第一压电陶瓷板和突出于所述第一压电陶瓷板的第一摩擦驱动部,所述第一压电陶瓷板适于在被电驱动后发生形变以带动所述第一摩擦驱动部做单向偏摆往复运动;其中,所述第二压电致动器包括第二压电陶瓷板和突出于所述第二压电陶瓷板的第二摩擦驱动部,所述第二压电陶瓷板适于在被电驱动后发生形变以带动所述第二摩擦驱动部做单向偏摆往复运动。
- 根据权利要求42所述的防抖驱动组件,其中,所述第一压电陶瓷板被设置于所述防抖固定部,所述第一摩擦驱动部摩擦地耦接于所述防抖可动部.所述第二压电陶瓷板被设置于所述防抖固定部,所述第二摩擦驱动部摩擦地耦接于所述防抖可动部。
- 根据权利要求41所述的防抖驱动组件,其中,所述第一压电致动器和所述第二压电致动器相互平行地布设于该感光组件的相对的两侧。
- 根据权利要求45所述的防抖驱动组件,其中,所述第一压电致动器和所述第二压电致动器相对于该感光组件以所述X轴或者所述Y轴为对称轴对称地布置于该感光组件的相对的两侧。
- 根据权利要求46所述的防抖驱动组件,其中,所述第一压电致动器适于沿着所述X轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动,且所述第二压电致动器适于沿着所述X轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动;其中,所述第一压电致动器适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动,且所述第二压电致动器适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动;其中,所述第一压电致动器适于沿着所述X轴所设定的第一方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的第一方向进行移动,且所述第二压电致动器适于沿着所述X轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的第二方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动该感光组件绕所述Z轴在所述XOY平面内进行旋转;其中,所述第一压电致动器适于沿着所述Y轴所设定的第一方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的第一方向进行移动,且所述第二压电致动器适于沿着所述Y轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的第二方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动该感光组件绕所述Z轴在所述XOY平面内进行旋转。
- 根据权利要求33所述的防抖驱动组件,进一步包括设置于所述防抖可动部和所述基底之间的驱动基板,所述驱动基板包括至少一导电端和自所述导电端往外延伸的连接端,所述第一压电致动器和所述第二压电致动器电连接于所述至少一电连接端。
- 根据权利要求48所述的防抖驱动组件,其中,所述至少一导电端包括第一导电端和第二导电端,所述第一压电致动器电连接于所述第一导电端,所述第二压电致动器电连接于所述第二导电端。
- 根据权利要求48所述的防抖驱动组件,其中,所述防抖可动部具有形成于所述载体主体的侧壁的开槽,所述开槽被配置为允许该感光组件的线路板自所述开槽伸出所述安置槽。
- 根据权利要求50所述的防抖驱动组件,其中,所述基底具有形成于其侧壁的开口,其中,所述连接端子所述至少一导电端往外延伸并穿过所述开口。
- 根据权利要求51所述的防抖驱动组件,其中,所述开口和所述开槽具有高度差。
- 根据权利要求33所述的防抖驱动组件,进一步包括设置于所述防抖驱动部和所述防抖固定 部之间的预压力装置,以通过所述预压力装置所提供的预压力迫使所述防抖驱动部摩擦地耦接于所述防抖可动部。
- 根据权利要求53所述的防抖驱动组件,其中,所述预压力装置包括设置于所述基底和所述第一压电致动器的第一压电陶瓷板之间的第一弹性元件,以通过所述第一弹性元件自身的弹力产生所述预压力以迫使所述第一压电致动器的第一摩擦驱动部抵触于所述摩擦板,通过这样的方式使得所述第一压电致动器的第一摩擦驱动部摩擦地耦接于所述摩擦板;所述预压力装置还包括设置于所述基底和所述第二压电致动器的第二压电陶瓷板之间的第二弹性元件,以通过所述第二弹性元件自身的弹力产生的所述预压力迫使所述第二压电致动器的第二摩擦驱动部抵触于所述摩擦板,通过这样的方式使得所述第二压电致动器的第二摩擦驱动部摩擦地耦接于所述摩擦板。
- 根据权利要求54所述的防抖驱动组件,其中,所述第一弹性元件和所述第二弹性元件的厚度尺寸为10um至50um。
- 一种摄像模组,其特征在于,包括:光学镜头;感光组件,包括线路板和电连接于所述线路板的感光组件,其中,所述光学镜头被保持于所述感光组件的感光路径上;以及如权利要求29至55任一所述的防抖驱动组件,其中,所述感光组件被安装于所述防抖驱动组件的防抖可动部。
- 一种防抖驱动组件,其特征在于,包括:具有收容腔的防抖固定部;被悬持地设置于所述防抖固定部的收容腔内的防抖可动部,其中,所述防抖可动部适于安装感光组件于其上,所述收容腔被所述防抖可动部分为第一部分和第二部分;被设置于所述收容腔的第二部分的防抖驱动部和预压力装置,其中,所述防抖驱动部包括通过所述预压力装置摩擦地耦接于所述防抖可动部的第一压电致动器和第二压电致动器,所述第一压电致动器和所述第二压电致动器适于作动所述防抖可动部在X轴和Y轴所设定的XOY平面内移动或绕着垂直于所述X轴和所述Y轴的Z轴在所述XOY平面内旋转;以及被设置于所述收容腔的第一部分的用于导引所述防抖可动部沿着所述X轴所设定的方向和/或所述Y轴所设定的方向进行移动的导引装置;其中,当所述防抖驱动部被驱动时,所述防抖驱动部与所述防抖可动部之间的摩擦力大于所述导引装置在所述第一部分遇到的摩擦力。
- 根据权利要求57所述的防抖驱动组件,其中,所述防抖固定部包括基底和与所述基底相扣合的上盖,所述收容腔形成于所述上盖和所述基底之间,所述第一部分形成于所述上盖与所述防抖可 动部之间,所述第二部分形成于所述基底和所述防抖可动部之间。
- 根据权利要求58所述的防抖驱动组件,其中,所述防抖驱动部和所述预压力装置被夹持地设置于所述防抖可动部和所述基底之间,所述导引装置被夹持地设置于所述上盖和所述防抖可动部之间,其中,当所述第一压电致动器和所述第二压电致动器被驱动时,所述第一压电致动器和所述第二压电致动器与所述防抖可动部之间的摩擦力大于所述导引装置与所述上盖之间的摩擦力。
- 根据权利要求59所述的防抖驱动组件,其中,所述预压力装置包括设置于所述基底和所述第一压电致动器之间的第一弹性元件,以通过所述第一弹性元件自身的弹力产生所述预压力以迫使所述第一压电致动器抵触于所述防抖可动部,通过这样的方式使得所述第一压电致动器摩擦地耦接于所述防抖可动部;所述预压力装置还包括设置于所述基底和所述第二压电致动器的第二压电陶瓷板之间的第二弹性元件,以通过所述第二弹性元件自身的弹力产生的所述预压力迫使所述第二压电致动器抵触于所述防抖可动部,通过这样的方式使得所述第二压电致动器摩擦地耦接于所述防抖可动部。
- 根据权利要求60所述的防抖驱动组件,其中,所述第一弹性元件和所述第二弹性元件由黏着剂固化形成。
- 根据权利要求61所述的防抖驱动组件,其中,所述第一弹性元件和所述第二弹性元件的厚度尺寸为10um至50um。
- 根据权利要求60所述的防抖驱动组件,其中,所述防抖可动部包括载体主体.自所述载体主体向外延伸的载体延伸臂和形成于所述载体延伸臂的下表面的摩擦板,其中,通过所述第一弹性元件和所述第二弹性元件使得所述第一压电致动器和所述第二压电致动器摩擦地耦接于所述防抖可动部的摩擦板。
- 根据权利要求63所述的防抖驱动组件,其中,所述导引装置包括凹陷地形成于所述载体延伸臂的上表面的第一导引槽和设置于所述第一导引槽内的滚珠,其中,所述滚珠的至少一部分突出于所述第一导引槽并抵触于所述上盖的下表面,通过这样的方式使得,在所述防抖可动部和该感光组件被所述第一压电致动器和所述第二压电致动器所作动时所述滚珠与所述上盖的下表面之间存在摩擦。
- 根据权利要求64所述的防抖驱动组件,其中,所述第一导引槽沿着所述X轴所设定的方向延伸,所述导引装置进一步包括凹陷地形成于所述上盖的下表面的第二导引槽,所述第二导引槽沿着所述Y轴所设定的方向延伸。
- 根据权利要求64所述的防抖驱动组件,其中,所述第一导引槽沿着所述Y轴所设定的方向延伸,所述导引装置进一步包括凹陷地形成于所述上盖的下表面的第二导引槽,所述第二导引槽沿着所述X轴所设定的方向延伸。
- 根据权利要求65或66所述的防抖驱动组件,其中,所述第一导引槽段和所述第二导引槽段相对设置且相互交叉。
- 根据权利要求63所述的防抖驱动组件,其中,所述导引装置包括凹陷地形成于所述载体延 伸臂的上表面的导槽和设置于所述导槽内的滑块,其中,所述滑块的至少一部分突出于所述导槽并抵触于所述上盖的下表面,通过这样的方式,所述滑块被夹持于所述上盖的下表面和所述载体延伸臂的上表面之间。
- 根据权利要求64所述的防抖驱动组件,其中,所述防抖可动部被平稳地支持于所述第一压电致动器和所述第二压电致动器上。
- 根据权利要求69所述的防抖驱动组件,其中,所述第一压电致动器和所述第二压电致动器具有相同的高度尺寸。
- 根据权利要求70所述的防抖驱动组件,其中,所述第一压电致动器和所述第二压电致动器的高度尺寸为0.7mm-0.9mm。
- 根据权利要求70所述的防抖驱动组件,其中,所述第一压电致动器和所述第二压电致动器为行波式压电致动器,其中,所述第一压电致动器包括第一压电陶瓷板和突出于所述第一压电陶瓷板的第一摩擦驱动部,所述第一压电陶瓷板适于在被电驱动后发生形变以带动所述第一摩擦驱动部做单向偏摆往复运动;其中,所述第二压电致动器包括第二压电陶瓷板和突出于所述第二压电陶瓷板的第二摩擦驱动部,所述第二压电陶瓷板适于在被电驱动后发生形变以带动所述第二摩擦驱动部做单向偏摆往复运动。
- 根据权利要求71所述的防抖驱动组件,其中,所述第一压电陶瓷板被设置于所述防抖固定部,所述第一摩擦驱动部摩擦地耦接于所述防抖可动部.所述第二压电陶瓷板被设置于所述防抖固定部,所述第二摩擦驱动部摩擦地耦接于所述防抖可动部。
- 根据权利要求70所述的防抖驱动组件,其中,所述第一压电致动器和所述第二压电致动器相互平行地布设于该感光组件的相对的两侧。
- 根据权利要求74所述的防抖驱动组件,其中,所述第一压电致动器和所述第二压电致动器相对于该感光组件以所述X轴或者所述Y轴作为对称轴被对称地布置于该感光组件的相对的两侧。
- 根据权利要求75所述的防抖驱动组件,其中,所述第一压电致动器适于沿着所述X轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动,且所述第二压电致动器适于沿着所述X轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动;其中,所述第一压电致动器适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动,且所述第二压电致动器适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动;其中,所述第一压电致动器适于沿着所述X轴所设定的第一方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的第一方向进行移动,且所述第二压电致动器适于沿着所述X轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的第二方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动该感光组件绕所述Z轴在所述XOY平面内进行旋转;其中,所述第一压电致动器适于沿着所述Y轴所设定的第一方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的第一方向进行移动,且所述第二压电致动器适于沿着所述Y轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的第二方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动该感光组件绕所述Z轴在所述XOY平面内进行旋转。
- 根据权利要求70所述的防抖驱动组件,进一步包括设置于所述防抖可动部和所述基底之间的驱动基板,所述驱动基板包括至少一导电端和自所述导电端往外延伸的连接端,所述第一压电致动器和所述第二压电致动器电连接于所述至少一电连接端。
- 根据权利要求77所述的防抖驱动组件,其中,所述至少一导电端包括第一导电端和第二导电端,所述第一压电致动器电连接于所述第一导电端,所述第二压电致动器电连接于所述第二导电端。
- 根据权利要求78所述的防抖驱动组件,其中,所述防抖可动部具有形成于所述载体主体的侧壁的开槽,所述开槽被配置为允许该感光组件的线路板自所述开槽伸出所述安置槽。
- 根据权利要求79所述的防抖驱动组件,其中,所述基底具有形成于其侧壁的开口,其中,所述连接端子所述至少一导电端往外延伸并穿过所述开口。
- 根据权利要求80所述的防抖驱动组件,其中,所述开口和所述开槽具有高度差。
- 一种摄像模组,其特征在于,包括:光学镜头;感光组件,包括线路板和电连接于所述线路板的感光组件,其中,所述光学镜头被保持于所述感光组件的感光路径上;以及如权利要求57至81任一所述的防抖驱动组件,其中,所述感光组件被安装于所述防抖驱动组件的防抖可动部。
- 一种防抖驱动组件,其特征在于,包括:防抖固定部,其中,所述防抖固定部具有适于安装驱动基板于其上的第一安装面;防抖可动部,其中,所述防抖可动部具有适于安装感光组件于其上的第二安装面,所述第一安装面与所述第二安装面之间具有高度差;安装于所述第一安装面的驱动基板;以及电连接于所述驱动基板且位于所述防抖固定部和所述防抖可动部之间的防抖驱动部,所述防抖驱动部适于作动所述防抖可动部和该感光组件在X轴和Y轴所设定的XOY平面内移动或绕着垂直于所述X轴和所述Y轴的Z轴在所述XOY平面内旋转。
- 根据权利要求83所述的防抖驱动组件,其中,安装于所述第一安装面的驱动基板从所述防抖驱动组件的第一高度伸出,安装于所述第二安装面的感光组件的线路板适于从所述防抖驱动组件的第二高度伸出。
- 根据权利要求84所述的防抖驱动组件,其中,所述第一安装面和所述第二安装面之间的高度差为0.1mm-0.15mm。
- 根据权利要求85所述的防抖驱动组件,其中,所述驱动基板从所述防抖驱动组件的第一侧伸出,且该感光组件的线路板适于从所述防抖驱动组件的所述第一侧伸出。
- 根据权利要求85所述的防抖驱动组件,其中,所述驱动基板从所述防抖驱动组件的第一侧伸出,且该感光组件的线路板适于从所述防抖驱动组件的第二侧伸出。
- 根据权利要求87所述的防抖驱动组件,其中,所述第一侧与所述第二侧相邻,或,所述第一侧与所述第二侧相对。
- 根据权利要求86所述的防抖驱动组件,其中,所述防抖固定部包括基底和与所述基底相扣合的上盖,相扣合的所述上盖和所述基底形成收容腔于其间,所述防抖可动部被悬持于所述防抖固定部的收容腔内。
- 根据权利要求89所述的防抖驱动组件,其中,所述基底的内底表面形成所述第一安装面。
- 根据权利要求90所述的防抖驱动组件,其中,所述基底具有形成于其侧壁的开口,其中,所述驱动基板自所述开口以所述第一高度伸出所述防抖驱动组件。
- 根据权利要求91所述的防抖驱动组件,其中,所述防抖可动部包括载体主体.自所述载体主体向外延伸的载体延伸臂和形成于所述载体延伸臂的下表面的摩擦板,其中,所述第一压电致动器和所述第二压电致动器摩擦地耦接于所述摩擦板。
- 根据权利要求92所述的防抖驱动组件,其中,所述载体主体具有低于所述载体延伸臂的安置槽,所述安置槽的内底表面形成所述第二安装面。
- 根据权利要求93所述的防抖驱动组件,其中,所述防抖可动部具有形成于所述载体主体的侧壁且连通于所述安置槽的开槽,所述开槽被配置为允许该感光组件的线路板自所述开槽以所述第二高度伸出所述防抖驱动组件。
- 根据权利要求94所述的防抖驱动组件,其中,所述开口和所述开槽具有高度差,所述高度差为0.1mm-0.15mm。
- 根据权利要求95所述的防抖驱动组件,其中,所述开口和所述开槽位于所述防抖驱动组件的所述第一侧。
- 根据权利要求91所述的防抖驱动组件,其中,所述驱动基板包括至少一导电端和自所述导电端往外延伸的连接端,所述第一压电致动器和所述第二压电致动器电连接于所述至少一电连接端。
- 根据权利要求97所述的防抖驱动组件,其中,所述至少一导电端包括第一导电端和第二导电端,所述第一压电致动器电连接于所述第一导电端,所述第二压电致动器电连接于所述第二导电端。
- 根据权利要求97所述的防抖驱动组件,其中,所述连接端自所述至少一导电端往外延伸并穿过所述开口。
- 根据权利要求83所述的防抖驱动组件,其中,所述防抖驱动部包括摩擦地耦接于所述防抖可动部的第一压电致动器和第二压电致动器,其中,所述第一压电致动器和所述第二压电致动器相互平行地布设于该感光组件的相对的两侧,且所述第一压电致动器和所述第二压电致动器适于作动所述防抖可动部和该感光组件在X轴和Y轴所设定的XOY平面内移动或绕着垂直于所述X轴和所述Y轴的Z轴在所述XOY平面内旋转。
- 根据权利要求100所述的防抖驱动组件,其中,所述第一压电致动器和所述第二压电致动器为行波式压电致动器,其中,所述第一压电致动器包括第一压电陶瓷板和突出于所述第一压电陶瓷板的第一摩擦驱动部,所述第一压电陶瓷板适于在被电驱动后发生形变以带动所述第一摩擦驱动部做单向偏摆往复运动;其中,所述第二压电致动器包括第二压电陶瓷板和突出于所述第二压电陶瓷板的第二摩擦驱动部,所述第二压电陶瓷板适于在被电驱动后发生形变以带动所述第二摩擦驱动部做单向偏摆往复运动。
- 根据权利要求101所述的防抖驱动组件,其中,所述第一压电致动器适于沿着所述X轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动,且所述第二压电致动器适于沿着所述X轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动所述防抖可动部和该感光组件沿着所述X轴所设定的方向进行移动;其中,所述第一压电致动器适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动,且所述第二压电致动器适于沿着所述Y轴所设定的方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动所述防抖可动部和该感光组件沿着所述Y轴所设定的方向进行移动;其中,所述第一压电致动器适于沿着所述X轴所设定的第一方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的第一方向进行移动,且所述第二压电致动器适于沿着所述X轴所设 定的与所述第一方向相反的第二方向形变以作动所述防抖可动部和该感光组件沿着所述X轴所设定的第二方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动该感光组件绕所述Z轴在所述XOY平面内进行旋转;其中,所述第一压电致动器适于沿着所述Y轴所设定的第一方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的第一方向进行移动,且所述第二压电致动器适于沿着所述Y轴所设定的与所述第一方向相反的第二方向形变以作动所述防抖可动部和该感光组件沿着所述Y轴所设定的第二方向进行移动,以通过所述第一压电致动器和所述第二压电致动器作动该感光组件绕所述Z轴在所述XOY平面内进行旋转.
- 根据权利要求102所述的防抖驱动组件,其中,所述防抖可动部被平稳地支持于所述第一压电致动器的第一摩擦驱动部和所述第二压电致动器的第二摩擦驱动部上。
- 根据权利要求103所述的防抖驱动组件,其中,所述第一压电陶瓷板被设置于所述防抖固定部,所述第一摩擦驱动部摩擦地耦接于所述防抖可动部;所述第二压电陶瓷板被设置于所述防抖固定部,所述第二摩擦驱动部摩擦地耦接于所述防抖可动部。
- 根据权利要求104所述的防抖驱动组件,其中,所述第一压电致动器和所述第二压电致动器具有相同的高度尺寸
- 根据权利要求105所述的防抖驱动组件,其中,所述第一压电致动器和所述第二压电致动器的高度尺寸为0.7mm-0.9mm。
- 根据权利要求105所述的防抖驱动组件,进一步包括设置于所述防抖驱动部和所述防抖固定部之间的预压力装置,以通过所述预压力装置所提供的预压力迫使所述第一压电致动器的的第一摩擦驱动部和所述第二压电致动器的第二摩擦驱动部摩擦地耦接于所述防抖可动部。
- 根据权利要求107所述的防抖驱动组件,其中,所述预压力装置包括设置于所述基底和所述第一压电致动器的第一压电陶瓷板之间的第一弹性元件,以通过所述第一弹性元件自身的弹力产生所述预压力以迫使所述第一压电致动器的第一摩擦驱动部抵触于所述防抖可动部,通过这样的方式使得所述第一压电致动器的第一摩擦驱动部摩擦地耦接于所述防抖可动部;所述预压力装置还包括设置于所述基底和所述第二压电致动器的第二压电陶瓷板之间的第二弹性元件,以通过所述第二弹性元件自身的弹力产生的所述预压力迫使所述第二压电致动器的第二摩擦驱动部抵触于所述防抖可动部,通过这样的方式使得所述第二压电致动器的第二摩擦驱动部摩擦地耦接于所述防抖可动部。
- 一种摄像模组,其特征在于,包括:光学镜头;感光组件,包括线路板和电连接于所述线路板的感光组件,其中,所述光学镜头被保持于所述感光组件的感光路径上;以及如权利要求83至108任一所述的防抖驱动组件,其中,所述感光组件被安装于所述防抖驱动组 件的防抖可动部的第二安装面上。
- 一种摄像模组的防抖方法,其特征在于,包括:同时驱动防抖驱动部的第一压电致动器和第二压电致动器以作动安装于防抖可动部的感光组件先沿第一方向移动;以及同时驱动所述防抖驱动部的第一压电致动器和第二压电致动器以作动安装于所述防抖可动部的所述感光组件再沿第二方向移动,其中,所述第一方向与第二方向相互垂直。
- 根据权利要求110所述的摄像模组的防抖方法,其中,所述第一压电致动器和所述第二压电致动器相互平行地布设于所述感光组件的相对的两侧。
- 根据权利要求111所述的摄像模组的防抖方法,其中,所述第一方向为X轴方向.所述第二方向为Y轴方向。
- 根据权利要求111所述的摄像模组的防抖方法,其中,所述第一方向为Y轴方向.所述第二方向为X轴方向。
- 根据权利要求112所述的摄像模组的防抖方法,其中,所述第一压电致动器和所述第二压电致动器具有长方形结构,其中,所述第一压电致动器和所述第二压电致动器的长度方向为所述X轴方向,所述第一压电致动器和所述第二压电致动器的宽度方向为所述Y轴方向。
- 根据权利要求114所述的摄像模组的防抖方法,其中,所述第一压电致动器和所述第二压电致动器以所述X轴作为对称轴对称地布置于所述感光组件的相对的两侧。
- 根据权利要求115所述的摄像模组的防抖方法,其中,同时驱动防抖驱动部的第一压电致动器和第二压电致动器以作动安装于防抖可动部的感光组件先沿第一方向移动,包括:驱动所述第一压电致动器沿着其长度方向形变以作动所述防抖可动部沿着所述第一方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第一方向移动;以及驱动所述第二压电致动器沿着其长度方向形变以作动所述防抖可动部沿着所述第一方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第一方向移动。
- 根据权利要求116所述的摄像模组的防抖方法,其中,同时驱动所述防抖驱动部的第一压电致动器和第二压电致动器以作动安装于所述防抖可动部的所述感光组件再沿第二方向移动,包括:驱动所述第一压电致动器沿着其宽度方向形变以作动所述防抖可动部沿着所述第二方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第二方向移动;以及驱动所述第二压电致动器沿着其宽度方向形变以作动所述防抖可动部沿着所述第二方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第二方向移动。
- 根据权利要求113所述的摄像模组的防抖方法,其中,所述第一压电致动器和所述第二压电 致动器以所述Y轴作为对称轴对称地布置于所述感光组件的相对的两侧。
- 根据权利要求118所述的摄像模组的防抖方法,其中,同时驱动防抖驱动部的第一压电致动器和第二压电致动器以作动安装于防抖可动部的感光组件先沿第一方向移动,包括:驱动所述第一压电致动器沿着其宽度方向形变以作动所述防抖可动部沿着所述第一方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第一方向移动;以及驱动所述第二压电致动器沿着其宽度方向形变以作动所述防抖可动部沿着所述第一方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第一方向移动。
- 根据权利要求119所述的摄像模组的防抖方法,其中,同时驱动所述防抖驱动部的第一压电致动器和第二压电致动器以作动安装于所述防抖可动部的所述感光组件再沿第二方向移动,包括:驱动所述第一压电致动器沿着其长度方向形变以作动所述防抖可动部沿着所述第二方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第二方向移动;以及驱动所述第二压电致动器沿着其长度方向形变以作动所述防抖可动部沿着所述第二方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第二方向移动。
- 根据权利要求110所述的摄像模组的防抖方法,其中,所述防抖可动部被悬空地支持于防抖固定部的收容腔内,所述防抖驱动部的第一压电致动器和第二压电致动器被设置于所述防抖固定部和所述防抖可动部之间。
- 根据权利要求121所述的摄像模组的防抖方法,其中,所述防抖可动部被平稳的支持于所述第一致动器和所述第二压电致动器上。
- 根据权利要求122所述的摄像模组的防抖方法,其中,用于导通所述第一压电致动器和所述第二压电致动器的驱动基板和所述感光组件的线路板在所述收容腔内相互错开。
- 一种摄像模组的防抖方法,其特征在于,包括:驱动防抖驱动部的第一压电致动器以作动安装于防抖可动部的感光组件沿第一方向移动;以及同时驱动所述防抖驱动部的第二压电致动器以作动安装于所述防抖可动部的所述感光组件沿第二方向移动,所述第一方向与所述第二方向相互平行且相反,以通过所述第一压电致动器和所述第二压电致动器驱动所述感光组件进行旋转。
- 根据权利要求124所述的摄像模组的防抖方法,其中,所述第一压电致动器和所述第二压电致动器相互平行地布设于所述感光组件的相对的两侧。
- 根据权利要求125所述的摄像模组的防抖方法,其中,所述第一压电致动器和所述第二压电致动器以所述X轴作为对称轴对称地布置于所述感光组件的相对的两侧。
- 根据权利要求126所述的摄像模组的防抖方法,其中,所述第一方向为X轴方向的正方 向,所述第二方向为X轴方向的负方向。
- 根据权利要求126所述的摄像模组的防抖方法,其中,所述第一方向为X轴方向的负方向,所述第二方向为X轴方向的正方向。
- 根据权利要求125所述的摄像模组的防抖方法,其中,所述第一压电致动器和所述第二压电致动器以所述Y轴作为对称轴对称地布置于所述感光组件的相对的两侧。
- 根据权利要求129所述的摄像模组的防抖方法,其中,所述第一方向为Y轴方向的正方向,所述第二方向为Y轴方向的负方向。
- 根据权利要求129所述的摄像模组的防抖方法,其中,所述第一方向为Y轴方向的负方向,所述第二方向为Y轴方向的正方向。
- 根据权利要求127或128所述的摄像模组的防抖方法,其中,驱动防抖驱动部的第一压电致动器以作动安装于防抖可动部的感光组件沿第一方向移动,包括:驱动所述第一压电致动器沿着其长度方向形变以作动所述防抖可动部沿着所述第一方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第一方向移动;其中,同时驱动所述防抖驱动部的第二压电致动器以作动安装于所述防抖可动部的所述感光组件沿第二方向移动,包括:同时驱动所述第二压电致动器沿着其长度方向形变以作动所述防抖可动部沿着所述第二方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第二方向移动。
- 根据权利要求130或131所述的摄像模组的防抖方法,其中,驱动防抖驱动部的第一压电致动器以作动安装于防抖可动部的感光组件沿第一方向移动,包括:驱动所述第一压电致动器沿着其宽度方向形变以作动所述防抖可动部沿着所述第一方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第一方向移动;其中,同时驱动所述防抖驱动部的第二压电致动器以作动安装于所述防抖可动部的所述感光组件沿第二方向移动,包括:同时驱动所述第二压电致动器沿着其宽度方向形变以作动所述防抖可动部沿着所述第二方向移动从而带动安装于所述防抖可动部的感光组件沿着所述第二方向移动。
- 一种用于驱动镜头的驱动组件,其特征在于,包括:驱动载体,其具有用于承载镜头的可调群组的载体主体;驱动元件,用于提供使所述驱动载体沿着调整方向移动的驱动力,其中在所述驱动元件与所述驱动载体的载体主体之间形成结构空间;摩擦板,其设置在所述驱动元件与所述驱动载体的载体主体之间的所述结构空间中,并且所述摩 擦板的一端与所述驱动载体的载体主体固定连接,另一端与所述驱动元件作用连接,使得所述驱动元件能够驱动所述摩擦板沿着所述调整方向移动。
- 根据权利要求134所述的用于驱动镜头的驱动组件,其中,所述设置在驱动元件与所述驱动载体的载体主体之间的结构空间中的摩擦板将所述结构空间分成第一结构空间和与第一结构空间相对的第二结构空间。
- 根据权利要求134所述的用于驱动镜头的驱动组件,其中,在所述第一结构空间中布置用于感测驱动载体或者摩擦板的移动位置的位置感测元件,在所述与第一结构空间相对的第二结构空间中布置用于引导驱动载体沿着所述调整方向移动的导引装置。
- 根据权利要求136所述的用于驱动镜头的驱动组件,其中,所述驱动载体还包括从驱动载体的载体主体向外伸出的连接端,所述连接端具有连接孔,所述导引装置包括导杆,所述导杆平行于所述调整方向穿过驱动载体的连接端的连接孔,从而驱动载体能在驱动元件的驱动下沿着导引装置移动。
- 根据权利要求137所述的用于驱动镜头的驱动组件,其中,所述驱动载体的连接端包括从驱动载体的载体主体向外延伸的第一连接端和从驱动载体的载体主体向外延伸的第二连接端,其中第一连接端和第二连接端分别位于所述载体主体的彼此相对的两侧,并且所述导引装置包括第一导杆和第二导杆,其中第一导杆穿过驱动载体的第一连接端的第一连接孔,第二导杆穿过驱动载体的第二连接端的第二连接孔,从而驱动载体能在驱动元件的驱动下沿着导引装置的第一导杆和第二导杆移动,其中第一导杆和第二导杆彼此平行并沿着所述调整方向布置。
- 根据权利要求138所述的用于驱动镜头的驱动组件,其中,所述驱动载体的第二连接端还具有安置槽,所述摩擦板嵌入到所述安置槽中并与驱动载体的载体主体固定连接,其中所述安置槽构造成夹持轨道,所述摩擦板被夹持在所述夹持轨道之间。
- 根据权利要求134所述的用于驱动镜头的驱动组件,其中,所述驱动元件构造成压电致动器,包括压电板和固定在压电板上的摩擦驱动部,其中摩擦驱动部与所述摩擦板作用连接,从而能够驱动所述摩擦板沿着所述调整方向移动。
- 根据权利要求134所述的用于驱动镜头的驱动组件,其中,设有给所述驱动元件提供预压力的预压力装置,使得驱动元件在所述预压力的作用下与所述摩擦板保持摩擦接触。
- 根据权利要求141所述的用于驱动镜头的驱动组件,其中,在所述预压力装置与摩擦板之间设置摩擦机构,使得摩擦板与所述预压力装置通过所述摩擦机构活动连接,其中所述预压力装置将摩擦机构顶压在摩擦板上。
- 根据权利要求142所述的用于驱动镜头的驱动组件,其中,在摩擦板的一个侧面上设置所述驱动元件,在摩擦板的相对的另一个侧面上设置所述摩擦机构,使得摩擦板在所述预压力装置的作用下被夹持在所述驱动元件和所述摩擦机构之间,使得摩擦板能在所述驱动元件的驱动作用下沿着所 述调整方向移动。
- 根据权利要求143所述的用于驱动镜头的驱动组件,其中,所述预压力装置包括上夹部、下夹部以及连接所述上夹部和下夹部的连接部,其中所述预压力装置将摩擦板以及布置在摩擦板两侧的驱动元件和摩擦机构弹性夹持在所述预压力装置的上夹部和下夹部之间。
- 根据权利要求141所述的用于驱动镜头的驱动组件,其中,在摩擦板的两个相对侧面上分别设置一个驱动元件,使得摩擦板被夹持在这两个驱动元件之间,并能在这两个驱动元件的协同驱动作用下沿着所述调整方向移动。
- 根据权利要求145所述的用于驱动镜头的驱动组件,其中,所述预压力装置包括上夹部、下夹部以及连接所述上夹部和下夹部的连接部,其中所述预压力装置将摩擦板以及布置在摩擦板两侧的驱动元件弹性夹持在所述预压力装置的上夹部和下夹部之间。
- 根据权利要求146所述的用于驱动镜头的驱动组件,其中,所述驱动组件还包括与驱动元件电连接的驱动基板,用于给驱动元件输送电流,其中所述驱动基板通过所述预压力装置夹持在所述驱动元件上。
- 根据权利要求147所述的用于驱动镜头的驱动组件,其中,所述驱动基板包括第一导电端、第二导电端以及连接所述第一导电端和第二导电端的连接带,其中所述第一导电端通过所述预压力装置的上夹部夹持在对应的驱动元件上,所述第二导电端通过所述预压力装置的下夹部夹持在对应的驱动元件上。
- 根据权利要求148所述的用于驱动镜头的驱动组件,其中,所述驱动基板的第二导电端设置有延伸部,所述延伸部延伸到所述第一结构空间中,其中所述位置感测元件设置在所述延伸部上,并且与位置感测元件的位置相对地在摩擦板上设有感测磁铁。
- 根据权利要求149所述的用于驱动镜头的驱动组件,其中,所述驱动组件还包括承载机构,所述承载机构具有形成安置空间的多个定位柱,所述驱动元件在所述预压力装置的夹持下设置在所述安置空间中,其中驱动基板固定在承载机构的定位柱上。
- 根据权利要求134所述的用于驱动镜头的驱动组件,其中,所述承载机构还具有承载连接部,所述承载连接部与驱动壳体固定连接,其中所述驱动壳体包括上壳体和与所述上壳体连接成封闭结构的下壳体。
- 根据权利要求142所述的用于驱动镜头的驱动组件,其中,所述摩擦机构包括构造在所述预压力装置和/或摩擦板上的凹槽或者辊道以及布置在所述凹槽或者辊道中的滚珠或滑块。
- 一种摄像模组,包括如权利要求134到152中任一项所述的用于驱动镜头的驱动组件;感光组件,用于接受光信号并将接收的光信号转变为图像信号;镜头组,包括固定群组和可调群组,其中所述驱动组件的驱动元件设置用于驱动所述镜头组的可调群组。
- 根据权利要求153所述的摄像模组,其中,所述镜头组的可调群组包括变焦群组和对焦群组,其中所述驱动组件的驱动载体包括用于承载变焦群组的第一载体和用于承载对焦群组的第二载体,其中第一载体和第二载体沿调整方向同轴地依次布置,并能够被单独驱动。
- 一种用于驱动镜头的驱动组件,其特征在于,包括:驱动载体,包括第一载体和第二载体,其分别用于承载镜头的至少一个可调群组,其中第一载体和第二载体依次布置在沿调整方向的同一轴线上,并能够彼此独立地沿所述调整方向移动;第一驱动元件;第一摩擦板,其设置在第一载体的载体主体与第一驱动元件之间,其中第一摩擦板的一端与第一载体的载体主体固定连接,另一端与第一驱动元件作用连接;第二驱动元件;第二摩擦板,其设置在第二载体的载体主体与第二驱动元件之间,其中第二摩擦板的一端与第二载体的载体主体固定连接,另一端与第二驱动元件作用连接;其中第一驱动元件和与第一驱动元件作用连接的第一摩擦板位于所述驱动组件的第一侧,第二驱动元件和与第二驱动元件作用连接的第二摩擦板位于所述驱动组件的第二侧,所述第一侧和第二侧相对于第一载体和第二载体的所述轴线彼此相对,其中所述与第一载体的载体主体固定连接的第一摩擦板沿所述调整方向朝着远离第二载体的方向延伸,所述与第二载体的载体主体固定连接的第二摩擦板沿所述调整方向朝着远离第一载体的方向延伸。
- 根据权利要求155所述的用于驱动镜头的驱动组件,其中,所述第一驱动元件设置在所述驱动组件沿所述调整方向的中间位置,并且第二驱动元件设置在所述驱动组件沿所述调整方向的中间位置。
- 根据权利要求156所述的用于驱动镜头的驱动组件,其中,所述第一驱动元件和第二驱动元件沿所述调整方向彼此平行设置。
- 根据权利要求155所述的用于驱动镜头的驱动组件,其中,所述第一驱动元件和第二驱动元件构造成压电致动器,分别包括压电板和固定在压电板上的摩擦驱动部,其中第一驱动元件的摩擦驱动部与第一摩擦板作用连接,从而能够驱动第一摩擦板沿着调整方向移动,第二驱动元件的摩擦驱动部与第二摩擦板作用连接,从而能够驱动第二摩擦板沿着调整方向移动。
- 根据权利要求158所述的用于驱动镜头的驱动组件,其中,第一摩擦板在移动过程中始终保持在第一驱动元件的驱动范围内,并且第二摩擦板在移动过程中始终保持在第二驱动元件的驱动范 围内。
- 根据权利要求159所述的用于驱动镜头的驱动组件,其中,在初始位置中,所述第一驱动元件的摩擦驱动部在第一摩擦板的沿所述调整方向的中间位置与第一摩擦板作用连接,和/或第二驱动元件的摩擦驱动部在第二摩擦板的沿所述调整方向的中间位置与第二摩擦板作用连接。
- 根据权利要求159所述的用于驱动镜头的驱动组件,其中,在初始位置中,所述第一驱动元件的摩擦驱动部在第一摩擦板的沿所述调整方向的一个端部上与第一摩擦板作用连接,和/或第二驱动元件的摩擦驱动部在第二摩擦板的沿所述调整方向的一个端部上与第二摩擦板作用连接。
- 根据权利要求159所述的用于驱动镜头的驱动组件,其中,所述驱动组件还包括导引装置,用于引导第一载体和第二载体沿着所述调整方向移动,其中所述导引装置包括至少一个导杆,所述导杆平行于所述调整方向穿过第一载体和第二载体,从而使第一载体和第二载体能沿着导引装置移动。
- 根据权利要求162所述的用于驱动镜头的驱动组件,其中,所述第一载体包括从第一载体的载体主体向外延伸的第一连接端和从第一载体的载体主体向外延伸的第二连接端,其中第一连接端和第二连接端分别位于第一载体的载体主体的彼此相对的两侧,其中第一载体的第一连接端具有第一连接孔,第一载体的第二连接端具有第二连接孔,并且第二载体还包括从第二载体的载体主体向外延伸的第一连接端和从第二载体的载体主体向外延伸的第二连接端,其中第一连接端和第二连接端分别位于第二载体的载体主体的彼此相对的两侧,其中第二载体的第一连接端具有第一连接孔,第二载体的第二连接端具有第二连接孔,其中所述导引装置包括第一导杆和第二导杆,其中第一导杆穿过第一载体的第二连接端的第二连接孔和第二载体的第一连接端的第一连接孔,第二导杆穿过第一载体的第一连接端的第一连接孔和第二载体的第二连接端的第二连接孔,从而第一载体和第二载体能分别在第一驱动元件和第二驱动元件的驱动下沿着导引装置的第一导杆和第二导杆单独移动,其中第一导杆和第二导杆彼此平行地沿着所述调整方向布置。
- 根据权利要求163所述的用于驱动镜头的驱动组件,其中,所述导引装置的第一导杆和第二导杆具有高度差。
- 根据权利要求163所述的用于驱动镜头的驱动组件,其中,所述第一载体的第二连接端具有安置槽,第一摩擦板嵌入到第二连接端的所述安置槽中并与第一载体的载体主体固定连接,并且第二载体的第二连接端具有安置槽,第二摩擦板嵌入到第二连接端的所述安置槽中并与第二载体的载体主体固定连接。
- 根据权利要求163所述的用于驱动镜头的驱动组件,其中,所述驱动组件还包括第一预压力装置,其设置成给第一驱动元件提供预压力,使得第一驱动元件在所述预压力的作用下与第一摩擦板保持摩擦接触,并且所述驱动组件还包括第二预压力装置,其设置成给第二驱动元件提供预压力,使得第二驱动元件在所述预压力的作用下与第二摩擦板保持摩擦接触。
- 根据权利要求166所述的用于驱动镜头的驱动组件,其中,在第一预压力装置与第一摩擦板之间设置第一摩擦机构,使得第一摩擦板与第一预压力装置通过第一摩擦机构活动连接,并且在第二预压力装置与第二摩擦板之间设置第二摩擦机构,使得第二摩擦板与第二预压力装置通过第二摩擦机构活动连接。
- 根据权利要求167所述的用于驱动镜头的驱动组件,其中,在第一摩擦板的一个侧面上设置第一驱动元件,在第一摩擦板的相对的另一个侧面上设置第一摩擦机构,使得第一摩擦板被夹持在第一驱动元件和第一摩擦机构之间,并且第一摩擦板能在第一驱动元件的驱动作用下沿着所述调整方向移动,并且,在第二摩擦板的一个侧面上设置第二驱动元件,在第二摩擦板的相对的另一个侧面上设置第二摩擦机构,使得第二摩擦板被夹持在第二驱动元件和第二摩擦机构之间,并且第二摩擦板能在第二驱动元件的驱动作用下沿着所述调整方向移动。
- 根据权利要求168所述的用于驱动镜头的驱动组件,其中,所述第一预压力装置和第二预压力装置分别包括上夹部、下夹部以及连接所述上夹部和下夹部的连接部,其中第一预压力装置将第一摩擦板以及布置在第一摩擦板两侧的第一驱动元件和第一摩擦机构弹性夹持在第一预压力装置的上夹部和下夹部之间,并且第二预压力装置将第二摩擦板以及布置在第二摩擦板两侧的第二驱动元件和第二摩擦机构弹性夹持在第二预压力装置的上夹部和下夹部之间。
- 根据权利要求166所述的用于驱动镜头的驱动组件,其中,在第一摩擦板的两个相对侧面上分别设置一个第一驱动元件,使得第一摩擦板被夹持在这两个第一驱动元件之间,并能在这两个第一驱动元件的协同驱动作用下沿着所述调整方向移动,并且在第二摩擦板的两个相对侧面上分别设置一个第二驱动元件,使得第二摩擦板被夹持在这两个第二驱动元件之间,并能在这两个第二驱动元件的协同驱动作用下沿着所述调整方向移动。
- 根据权利要求170所述的用于驱动镜头的驱动组件,其中,所述第一预压力装置和第二预压力装置分别包括上夹部、下夹部以及连接所述上夹部和下夹部的连接部,其中第一预压力装置将第一摩擦板以及布置在第一摩擦板两侧的第一驱动元件弹性夹持在第一预压力装置的上夹部和下夹部之间,并且第二预压力装置将第二摩擦板以及布置在第二摩擦板两侧的第二驱动元件弹性夹持在第二预压力装置的上夹部和下夹部之间。
- 根据权利要求171所述的用于驱动镜头的驱动组件,其中,在第一预压力装置与第一驱动 元件之间设置第一驱动基板,第一驱动基板与第一驱动元件电连接,用于给第一驱动元件输送电流,其中第一驱动基板通过第一预压力装置夹持在第一驱动元件上,并且在第二预压力装置与第二驱动元件之间设置第二驱动基板,第二驱动基板与第二驱动元件电连接,用于给第二驱动元件输送电流,其中第二驱动基板通过第二预压力装置夹持在第二驱动元件上。
- 根据权利要求172所述的用于驱动镜头的驱动组件,其中,所述第一驱动基板包括第一导电端、第二导电端以及连接所述第一导电端和第二导电端的连接带,其中第一驱动基板的第一导电端通过第一预压力装置的上夹部夹持在对应的驱动元件上,所述第一驱动基板的第二导电端通过第一预压力装置的下夹部夹持在对应的驱动元件上,并且第二驱动基板包括第三导电端、第四导电端以及连接所述第三导电端和第四导电端的连接带,其中第二驱动基板的第三导电端通过第二预压力装置的下夹部夹持在对应的驱动元件上,所述第二驱动基板的第四导电端通过第二预压力装置的上夹部夹持在对应的驱动元件上。
- 根据权利要求173所述的用于驱动镜头的驱动组件,其中,所述驱动组件还包括第一承载机构和第二承载机构,第一承载机构和第二承载机构分别具有形成安置空间的多个定位柱,其中第一驱动元件在第一预压力装置的夹持下设置在第一承载机构的安置空间中,并且第一驱动基板的第一导电端和第二导电端分别在第一承载机构的安置空间外部固定在第一承载机构的定位柱上,并且第二驱动元件在第二预压力装置的夹持下设置在第二承载机构的安置空间中,并且第二驱动基板的第三导电端和第四导电端分别在第二承载机构的安置空间外部固定在第二承载机构的定位柱上。
- 根据权利要求174所述的用于驱动镜头的驱动组件,其中,所述第一承载机构和第二承载机构还分别具有承载连接部,所述承载连接部与驱动壳体固定连接,其中所述驱动壳体包括上壳体和与所述上壳体连接成封闭结构的下壳体。
- 根据权利要求167所述的用于驱动镜头的驱动组件,其中,所述第一摩擦机构包括构造在第一预压力装置和/或第一摩擦板上的凹槽或者辊道以及布置在所述凹槽或者辊道中的滚珠或滑块,并且所述第二摩擦机构包括构造在第二预压力装置和/或第二摩擦板上的凹槽或者辊道以及布置在所述凹槽或者辊道中的滚珠或滑块。
- 一种摄像模组,包括如权利要求155到176中任一项所述的用于驱动镜头的驱动组件;感光组件,用于接受光信号并将接收的光信号转变为图像信号;镜头组,包括固定群组和可调群组,其中所述驱动组件的驱动元件设置用于驱动所述镜头组的可调群组。
- 根据权利要求177所述的摄像模组,其中,所述镜头组的可调群组包括变焦群组和对焦群 组,其中所述驱动组件的第一载体用于承载变焦群组的第一载体,所述驱动组件的第二载体用于承载对焦群组,其中第一载体和第二载体能够分别被第一驱动元件和第二驱动元件单独驱动。
- 一种用于驱动镜头的驱动组件,其特征在于,包括:驱动载体,其具有用于承载镜头的可调群组的载体主体;驱动元件,用于提供使所述驱动载体沿着调整方向移动的驱动力;承载机构,其具有安置空间,所述驱动元件容纳在所述承载机构的安置空间中;和驱动基板,其固定在所述承载机构上,并与容纳在所述承载机构的安置空间中的驱动元件电连接,用于给驱动元件输送电流。
- 根据权利要求179所述的用于驱动镜头的驱动组件,其中,所述承载机构包括朝向驱动载体的载体主体延伸的多个定位柱,所述多个定位柱形成U形开口的安置空间。
- 根据权利要求180所述的用于驱动镜头的驱动组件,其中,所述驱动基板包括第一导电端、第二导电端以及连接所述第一导电端和第二导电端的连接带,其中驱动基板的第一导电端和第二导电端固定在承载机构的定位柱上。
- 根据权利要求181所述的用于驱动镜头的驱动组件,其中,所述承载机构还具有承载连接部,其设置用于与所述驱动组件的驱动壳体固定连接。
- 根据权利要求182所述的用于驱动镜头的驱动组件,其中,所述驱动壳体包括上壳体和与所述上壳体连接成封闭结构的下壳体,所述下壳体的侧壁上设有连接槽,所述承载机构的承载连接部嵌入所述连接槽内以进行固定。
- 根据权利要求183所述的用于驱动镜头的驱动组件,其中,所述承载机构的承载连接部构造为T形的插入件,其嵌入所述下壳体的连接槽内以进行固定。
- 根据权利要求183所述的用于驱动镜头的驱动组件,其中,所述驱动壳体的下壳体的侧壁上还设有重叠槽,所述重叠槽包括内重叠槽和外重叠槽,所述内重叠槽的高度大于所述外重叠槽的高度。
- 根据权利要求182到185中任一项所述的用于驱动镜头的驱动组件,其中,所述驱动组件还包括摩擦板,其设置在所述驱动载体的载体主体与驱动元件之间,其中所述摩擦板的一端与所述驱动载体的载体主体固定连接,另一端与所述驱动元件作用连接,使得所述驱动元件能够驱动所述摩擦板移动。
- 根据权利要求186所述的用于驱动镜头的驱动组件,其中,设有给所述驱动元件提供预压力的预压力装置,使得驱动元件在所述预压力的作用下与所述摩擦板保持摩擦接触。
- 根据权利要求187所述的用于驱动镜头的驱动组件,其中,所述承载机构布置所述预压力装置与所述驱动壳体之间,并支撑所述预压力装置、所述驱动元件和驱动载体。
- 根据权利要求188所述的用于驱动镜头的驱动组件,其中,所述承载机构将所述预压力装置和驱动元件固定于所述驱动壳体。
- 根据权利要求189所述的用于驱动镜头的驱动组件,其中,在所述预压力装置与摩擦板之间设置摩擦机构,使得摩擦板与所述预压力装置通过所述摩擦机构活动连接,其中所述预压力装置将摩擦机构顶压在摩擦板上。
- 根据权利要求190所述的用于驱动镜头的驱动组件,其中,在所述摩擦板的一个侧面上设置所述驱动元件,在摩擦板的相对的另一个侧面上设置所述摩擦机构,使得摩擦板在所述预压力装置的作用下被夹持在所述驱动元件和所述摩擦机构之间,使得摩擦板能在所述驱动元件的驱动作用下沿着所述调整方向移动。
- 根据权利要求191所述的用于驱动镜头的驱动组件,其中,所述预压力装置包括上夹部、下夹部以及连接所述上夹部和下夹部的连接部,其中所述预压力装置将摩擦板以及布置在摩擦板两侧的驱动元件和摩擦机构弹性夹持在所述预压力装置的上夹部和下夹部之间。
- 根据权利要求189所述的用于驱动镜头的驱动组件,其中,在所述摩擦板的两个相对侧面上分别设置一个驱动元件,使得摩擦板被夹持在这两个驱动元件之间,并能在这两个驱动元件的协同驱动作用下沿着所述调整方向移动。
- 根据权利要求193所述的用于驱动镜头的驱动组件,其中,所述预压力装置包括上夹部、下夹部以及连接所述上夹部和下夹部的连接部,其中所述预压力装置将摩擦板以及布置在摩擦板两侧的驱动元件弹性夹持在所述预压力装置的上夹部和下夹部之间。
- 根据权利要求187到194中任一项所述的用于驱动镜头的驱动组件,其中,所述驱动基板设置在所述预压力装置与所述驱动元件之间,其中所述驱动基板通过所述预压力装置夹持在所述驱动元件上。
- 根据权利要求195所述的用于驱动镜头的驱动组件,其中,所述驱动基板的第一导电端通过所述预压力装置的上夹部夹持在对应的驱动元件上,所述驱动基板的第二导电端通过所述预压力装置的下夹部夹持在对应的驱动元件上。
- 根据权利要求196所述的用于驱动镜头的驱动组件,其中,所述驱动基板的第二导电端设置有延伸部,其中在所述延伸部上设置位置感测元件,并且与位置感测元件的位置相对地在摩擦板上设有感测磁铁。
- 根据权利要求179到185中任一项所述的用于驱动镜头的驱动组件,其中,所述驱动元件构造成压电致动器,包括压电板和固定在压电板上的摩擦驱动部,其中摩擦驱动部与所述摩擦板作用连接,从而能够驱动所述摩擦板沿着所述调整方向移动。
- 根据权利要求187所述的用于驱动镜头的驱动组件,其中,所述驱动组件还包括导引装置,其设置成与所述驱动载体滑动连接,从而驱动载体能在驱动元件的驱动下沿着导引装置移动。
- 根据权利要求199所述的用于驱动镜头的驱动组件,其中,所述导引装置包括导杆,所述导杆平行于所述调整方向穿过驱动载体的连接端的连接孔,从而驱动载体能在驱动元件的驱动下沿着导引装置移动。
- 根据权利要求200所述的用于驱动镜头的驱动组件,其中,所述驱动载体的连接端包括从驱动载体的载体主体向外延伸的第一连接端和从驱动载体的载体主体向外延伸的第二连接端,其中第一连接端和第二连接端分别位于所述载体主体的彼此相对的两侧,并且所述导引装置包括第一导杆和第二导杆,其中第一导杆穿过驱动载体的第一连接端的第一连接孔,第二导杆穿过驱动载体的第二连接端的第二连接孔,从而驱动载体能在驱动元件的驱动下沿着导引装置的第一导杆和第二导杆移动,其中第一导杆和第二导杆彼此平行并沿着所述调整方向布置。
- 一种摄像模组,包括如权利要求179到201中任一项所述的用于驱动镜头的驱动组件;感光组件,用于接受光信号并将接收的光信号转变为图像信号;镜头组,包括固定群组和可调群组,其中所述驱动组件的驱动元件设置用于驱动所述镜头组的可调群组。
- 根据权利要求202所述的摄像模组,其中,所述镜头组的可调群组包括变焦群组和对焦群组,其中所述驱动组件的驱动载体包括用于承载变焦群组的第一载体和用于承载对焦群组的第二载体,其中第一载体和第二载体沿调整方向同轴地依次布置,并能够被单独驱动。
- 一种用于驱动镜头的驱动组件的组装方法,包括以下步骤:S1.将预压力装置嵌入于承载机构,以将所述预压力装置与所述承载机构固定连接;S2.将两个驱动元件电连接于驱动基板;S3.将所述驱动基板安放到所述预压力装置的上夹部与下夹部之间;S4.将摩擦板放入所述两个驱动元件之间,使所述摩擦板与驱动载体固定连接,并通过所述预压力装置夹持所述两个驱动元件,使其分别与所述摩擦板保持摩擦接触;S5.将所述承载机构与驱动壳体固定连接。
- 根据权利要求204所述的用于驱动镜头的驱动组件的组装方法,其中,在步骤S2中,将所述两个驱动元件的压电板分别电连接于所述驱动基板的第一导电端和第二导电端,并使得所述两个驱动元件的摩擦驱动部相对设置。
- 根据权利要求205所述的用于驱动镜头的驱动组件的组装方法,其中,在步骤S3中,使所述预压力装置的上夹部和下夹部分别夹持所述驱动基板的第一导电端和第二导电端,通过所述预压力装置的上夹部与下夹部将所述驱动基板和所述驱动元件夹持于所述预压力装置中,并且进一步将所述 驱动元件设置在所述承载机构上。
- 根据权利要求206所述的用于驱动镜头的驱动组件的组装方法,其中,在步骤S4中,将所述驱动基板的第一导电端和第二导电端分别固定在所述承载机构的定位柱上。
- 根据权利要求207所述的用于驱动镜头的驱动组件的组装方法,其中,在步骤S5中,将所述承载结构的承载连接部安置于所述驱动壳体的下壳体的连接槽内,以进行固定,然后将所述驱动壳体的上壳体固定到所述下壳体上,以完成所述驱动组件的组装。
- 一种用于驱动镜头的驱动组件,其特征在于,包括:驱动载体,其具有用于承载镜头的可调群组的载体主体;驱动元件,用于提供使所述驱动载体沿着调整方向移动的驱动力;摩擦板,其设置在所述驱动元件与所述驱动载体的载体主体之间,并且所述摩擦板的一端与所述驱动载体的载体主体固定连接,另一端与所述驱动元件作用连接,使得所述驱动元件能够驱动所述摩擦板沿着所述调整方向移动;其中所述驱动元件包括上驱动元件和下驱动元件,其设置在摩擦板的两侧并将摩擦板夹持在中间,使得摩擦板能在所述上驱动元件和下驱动元件的协同驱动作用下沿着所述调整方向移动,其中所述上驱动元件、下驱动元件以及夹持在上驱动元件和下驱动元件之间的摩擦板的整体高度不大于驱动载体的载体主体的最大高度。
- 根据权利要求209所述的用于驱动镜头的驱动组件,其中,设有给所述上驱动元件和下驱动元件提供预压力的预压力装置,使得上驱动元件和下驱动元件在所述预压力的作用下与所述摩擦板保持摩擦接触。
- 根据权利要求210所述的用于驱动镜头的驱动组件,其中,所述预压力装置包括上夹部、下夹部以及连接所述上夹部和下夹部的连接部,其中所述预压力装置将摩擦板以及布置在摩擦板两侧的上驱动元件和下驱动元件弹性夹持在所述预压力装置的上夹部和下夹部之间。
- 根据权利要求211所述的用于驱动镜头的驱动组件,其中,所述驱动组件还包括与上驱动元件和下驱动元件电连接的驱动基板,用于给上驱动元件和下驱动元件输送电流,其中所述驱动基板通过所述预压力装置夹持在所述上驱动元件和下驱动元件上。
- 根据权利要求212所述的用于驱动镜头的驱动组件,其中,所述驱动基板包括第一导电端、第二导电端以及连接所述第一导电端和第二导电端的连接带,其中所述第一导电端通过所述预压力装置的上夹部夹持在上驱动元件上,所述第二导电端通过所述预压力装置的下夹部夹持在下驱动元件上。
- 根据权利要求213所述的用于驱动镜头的驱动组件,其中,所述驱动基板的第二导电端设置有延伸部,其中在所述延伸部上设置位置感测元件,并且与位置感测元件的位置相对地在摩擦板上 设有感测磁铁。
- 根据权利要求209所述的用于驱动镜头的驱动组件,其中,所述上驱动元件和下驱动元件构造成压电致动器,分别包括压电板和固定在压电板上的摩擦驱动部,其中上驱动元件和下驱动元件的摩擦驱动部分别在两侧与所述摩擦板作用连接,从而能够协同驱动所述摩擦板沿着所述调整方向移动。
- 根据权利要求213所述的用于驱动镜头的驱动组件,其中,所述驱动组件还包括承载机构,所述承载机构具有形成安置空间的多个定位柱,所述上驱动元件和下驱动元件在所述预压力装置的夹持下设置在所述安置空间中,其中驱动基板固定在承载机构的定位柱上。
- 根据权利要求216所述的用于驱动镜头的驱动组件,其中,承载机构还具有承载连接部,所述承载连接部与驱动壳体固定连接,其中所述驱动壳体包括上壳体和与所述上壳体连接成封闭结构的下壳体。
- 根据权利要求217所述的用于驱动镜头的驱动组件,其中,所述驱动壳体的下壳体的侧壁上设有连接槽,所述承载机构的承载连接部嵌入所述连接槽内以进行固定。
- 根据权利要求218所述的用于驱动镜头的驱动组件,其中,所述驱动壳体的下壳体的侧壁上还设有重叠槽,所述重叠槽包括内重叠槽和外重叠槽,所述内重叠槽的高度大于所述外重叠槽的高度。
- 根据权利要求216述的用于驱动镜头的驱动组件,其中,所述驱动组件还包括导引装置,其设置成与所述驱动载体滑动连接,从而驱动载体能在上驱动元件和下驱动元件的协同驱动下沿着导引装置移动。
- 根据权利要求220所述的用于驱动镜头的驱动组件,其中,所述导引装置包括导杆,所述导杆平行于所述调整方向穿过驱动载体的连接端的连接孔,从而驱动载体能在上驱动元件和下驱动元件的协同驱动下沿着导引装置移动。
- 根据权利要求221所述的用于驱动镜头的驱动组件,其中,所述驱动载体的连接端包括从驱动载体的载体主体向外延伸的第一连接端和从驱动载体的载体主体向外延伸的第二连接端,其中第一连接端和第二连接端分别位于所述载体主体的彼此相对的两侧,并且所述导引装置包括第一导杆和第二导杆,其中第一导杆穿过驱动载体的第一连接端的第一连接孔,第二导杆穿过驱动载体的第二连接端的第二连接孔,从而驱动载体能在上驱动元件和下驱动元件的协同驱动下沿着导引装置的第一导杆和第二导杆移动,其中第一导杆和第二导杆彼此平行并沿着所述调整方向布置。
- 根据权利要求222所述的用于驱动镜头的驱动组件,其中,所述导引装置的第一导杆和第二导杆具有高度差。
- 一种摄像模组,包括如权利要求209到223中任一项所述的用于驱动镜头的驱动组件;感光组件,用于接受光信号并将接收的光信号转变为图像信号;镜头组,包括固定群组和可调群组,其中所述驱动组件的在上驱动元件和下驱动元件的协同驱动下设置用于协同驱动所述镜头组的可调群组。
- 根据权利要求224所述的摄像模组,其中,所述镜头组的可调群组包括变焦群组和对焦群组,其中所述驱动组件的驱动载体包括用于承载变焦群组的第一载体和用于承载对焦群组的第二载体,其中第一载体和第二载体沿调整方向同轴地依次布置,并能够被单独驱动。
- 根据权利要求225所述的摄像模组,其中,所述驱动组件还包括:第一驱动元件,用于提供使第一载体沿所述调整方向移动的驱动力;第一摩擦板,其设置在第一载体的载体主体与第一驱动元件之间,其中第一摩擦板的一端与第一载体的载体主体固定连接,另一端与第一驱动元件作用连接,使得第一驱动元件能够驱动第一摩擦板沿所述调整方向移动,其中第一驱动元件包括第一上驱动元件和第一下驱动元件,其设置在第一摩擦板的两侧并将第一摩擦板夹持在中间,使得第一摩擦板能在第一上驱动元件和第一下驱动元件的协同驱动作用下沿着所述调整方向移动;第二驱动元件,用于提供使第二载体沿所述调整方向移动的驱动力;第二摩擦板,其设置在第二载体的载体主体与第二驱动元件之间,其中第二摩擦板的一端与第二载体的载体主体固定连接,另一端与第二驱动元件作用连接,使得第二驱动元件能够驱动第二摩擦板沿所述调整方向移动,其中第二驱动元件包括第二上驱动元件和第二下驱动元件,其设置在第二摩擦板的两侧并将第二摩擦板夹持在中间,使得第二摩擦板能在第二上驱动元件和第二下驱动元件的协同驱动作用下沿着所述调整方向移动。
- 根据权利要求226所述的摄像模组,其中,所述设置在第一摩擦板的两侧并将第一摩擦板夹持在中间的第一上驱动元件和第一下驱动元件位于所述驱动组件的第一侧,所述设置在第二摩擦板的两侧并将第二摩擦板夹持在中间的第二上驱动元件和第二下驱动元件位于所述驱动组件的第二侧,其中所述第一侧和第二侧相对于第一载体和第二载体的所述轴线彼此相对。
- 根据权利要求227所述的摄像模组,其中,所述第一上驱动元件和第一下驱动元件以及夹持在第一上驱动元件和第一下驱动元件之间的第一摩擦板的整体高度不大于镜头组的最大高度,并且所述第二上驱动元件和第二下驱动元件以及夹持在第二上驱动元件和第二下驱动元件之间的第二摩擦板的整体高度不大于镜头组的最大高度。
- 一种用于驱动镜头的驱动组件,其特征在于,包括:驱动载体,包括第一载体和第二载体,其分别用于承载镜头的至少一个可调群组,其中第一载体和第二载体依次布置在沿调整方向的同一轴线上,并能够彼此独立地沿所述调整方向移动;第一驱动元件;第一摩擦板,其设置在第一载体的载体主体与第一驱动元件之间,其中第一摩擦板的一端与第一载体的载体主体固定连接,另一端与第一驱动元件作用连接;第二驱动元件;第二摩擦板,其设置在第二载体的载体主体与第二驱动元件之间,其中第二摩擦板的一端与第二载体的载体主体固定连接,另一端与第二驱动元件作用连接;其中第一驱动元件与第二驱动元件沿所述轴线观察是中心对称的。
- 根据权利要求229所述的用于驱动镜头的驱动组件,其中,所述第一驱动元件与第二驱动元件构造成结构相同的标准件。
- 根据权利要求229所述的用于驱动镜头的驱动组件,其中,所述驱动组件还包括第一预压力装置,其设置成给第一驱动元件提供预压力,使得第一驱动元件在所述预压力的作用下与第一摩擦板保持摩擦接触,并且所述驱动组件还包括第二预压力装置,其设置成给第二驱动元件提供预压力,使得第二驱动元件在所述预压力的作用下与第二摩擦板保持摩擦接触。
- 根据权利要求231所述的用于驱动镜头的驱动组件,其中,在第一预压力装置与第一摩擦板之间设置第一摩擦机构,使得第一摩擦板与第一预压力装置通过第一摩擦机构活动连接,并且在第二预压力装置与第二摩擦板之间设置第二摩擦机构,使得第二摩擦板与第二预压力装置通过第二摩擦机构活动连接。
- 根据权利要求232所述的用于驱动镜头的驱动组件,其中,在第一摩擦板的一个侧面上设置第一驱动元件,在第一摩擦板的相对的另一个侧面上设置第一摩擦机构,使得第一摩擦板被夹持在第一驱动元件和第一摩擦机构之间,并且第一摩擦板能在第一驱动元件的驱动作用下沿着所述调整方向移动,并且,在第二摩擦板的一个侧面上设置第二驱动元件,在第二摩擦板的相对的另一个侧面上设置第二摩擦机构,使得第二摩擦板被夹持在第二驱动元件和第二摩擦机构之间,并且第二摩擦板能在第二驱动元件的驱动作用下沿着所述调整方向移动,其中第一摩擦机构和第二摩擦机构沿所述轴线观察是中心对称的。
- 根据权利要求233所述的用于驱动镜头的驱动组件,其中,所述第一摩擦机构和第二摩擦机构构造成结构相同的标准件。
- 根据权利要求234所述的用于驱动镜头的驱动组件,其中,所述第一驱动元件和第一摩擦机构形成的第一结构单元与第二驱动元件和第二摩擦机构形成的第二结构单元构造成结构相同的标准件,并且沿所述轴线观察是中心对称的。
- 根据权利要求232到235中任一项所述的用于驱动镜头的驱动组件,其中,所述第一摩擦机构包括构造在第一预压力装置和/或第一摩擦板上的凹槽或者辊道以及布置在所述凹槽或者辊道中的滚珠或滑块,并且所述第二摩擦机构包括构造在第二预压力装置和/或第二摩擦板上的凹槽或者辊道以及布置在所述凹槽或者辊道中的滚珠或滑块。
- 根据权利要求233到235中任一项所述的用于驱动镜头的驱动组件,其中,所述第一预压力装置和第二预压力装置分别包括上夹部、下夹部以及连接所述上夹部和下夹部的连接部,其中所述第一预压力装置将第一摩擦板以及布置在第一摩擦板两侧的第一驱动元件和第一摩擦机构弹性夹持在第一预压力装置的上夹部和下夹部之间,并且所述第二预压力装置将第二摩擦板以及布置在第二摩擦板两侧的第二驱动元件和第二摩擦机构弹性夹持在第二预压力装置的上夹部和下夹部之间。
- 根据权利要求231所述的用于驱动镜头的驱动组件,其中,在第一摩擦板的两个相对侧面上分别设置一个第一驱动元件,使得第一摩擦板被夹持在这两个第一驱动元件之间,并能在这两个第一驱动元件的协同驱动作用下沿着所述调整方向移动,并且在第二摩擦板的两个相对侧面上分别设置一个第二驱动元件,使得第二摩擦板被夹持在这两个第二驱动元件之间,并能在这两个第二驱动元件的协同驱动作用下沿着所述调整方向移动,其中两个第一驱动元件和两个第二驱动元件沿所述轴线观察是中心对称的。
- 根据权利要求238所述的用于驱动镜头的驱动组件,其中,所述第一预压力装置和第二预压力装置分别包括上夹部、下夹部以及连接所述上夹部和下夹部的连接部,其中第一预压力装置将第一摩擦板以及布置在第一摩擦板两侧的第一驱动元件弹性夹持在第一预压力装置的上夹部和下夹部之间,并且第二预压力装置将第二摩擦板以及布置在第二摩擦板两侧的第二驱动元件弹性夹持在第二预压力装置的上夹部和下夹部之间。
- 根据权利要求229到235中任一项所述的用于驱动镜头的驱动组件,其中,所述第一驱动元件和第二驱动元件构造成压电致动器,分别包括压电板和固定在压电板上的摩擦驱动部,其中第一驱动元件的摩擦驱动部与第一摩擦板作用连接,从而能够驱动第一摩擦板沿着调整方向移动,第二驱动元件的摩擦驱动部与第二摩擦板作用连接,从而能够驱动第二摩擦板沿着调整方向移动。
- 根据权利要求229到235中任一项所述的用于驱动镜头的驱动组件,其中,所述驱动组件 还包括导引装置,用于引导第一载体和第二载体沿着所述调整方向移动,其中所述导引装置包括至少一个导杆,所述导杆平行于所述调整方向穿过第一载体和第二载体,从而使第一载体和第二载体能沿着导引装置移动。
- 根据权利要求241所述的用于驱动镜头的驱动组件,其中,所述第一载体包括从第一载体的载体主体向外延伸的第一连接端和从第一载体的载体主体向外延伸的第二连接端,其中第一连接端和第二连接端分别位于第一载体的载体主体的彼此相对的两侧,其中第一载体的第一连接端具有第一连接孔,第一载体的第二连接端具有第二连接孔,并且第二载体还包括从第二载体的载体主体向外延伸的第一连接端和从第二载体的载体主体向外延伸的第二连接端,其中第一连接端和第二连接端分别位于第二载体的载体主体的彼此相对的两侧,其中第二载体的第一连接端具有第一连接孔,第二载体的第二连接端具有第二连接孔,其中所述导引装置包括第一导杆和第二导杆,其中第一导杆穿过第一载体的第二连接端的第二连接孔和第二载体的第一连接端的第一连接孔,第二导杆穿过第一载体的第一连接端的第一连接孔和第二载体的第二连接端的第二连接孔,从而第一载体和第二载体能分别在第一驱动元件和第二驱动元件的驱动下沿着导引装置的第一导杆和第二导杆单独移动,其中第一导杆和第二导杆彼此平行地沿着所述调整方向布置。
- 根据权利要求242所述的用于驱动镜头的驱动组件,其中,所述导引装置的第一导杆和第二导杆具有高度差。
- 根据权利要求242所述的用于驱动镜头的驱动组件,其中,所述第一载体的第二连接端具有安置槽,第一摩擦板嵌入到第二连接端的所述安置槽中并与第一载体的载体主体固定连接,并且第二载体的第二连接端具有安置槽,第二摩擦板嵌入到第二连接端的所述安置槽中并与第二载体的载体主体固定连接。
- 根据权利要求238所述的用于驱动镜头的驱动组件,其中,在第一预压力装置与第一驱动元件之间设置第一驱动基板,第一驱动基板与第一驱动元件电连接,用于给第一驱动元件输送电流,其中第一驱动基板通过第一预压力装置夹持在第一驱动元件上,并且在第二预压力装置与第二驱动元件之间设置第二驱动基板,第二驱动基板与第二驱动元件电连接,用于给第二驱动元件输送电流,其中第二驱动基板通过第二预压力装置夹持在第二驱动元件上,其中第一驱动基板和第二驱动基板沿所述轴线观察是中心对称的。
- 根据权利要求245所述的用于驱动镜头的驱动组件,其中,所述第一驱动基板包括第一导电端、第二导电端以及连接所述第一导电端和第二导电端的连接带,其中第一驱动基板的第一导电端通过第一预压力装置的上夹部夹持在对应的驱动元件上,所述第一驱动基板的第二导电端通过第一预压力装置的下夹部夹持在对应的驱动元件上,并且第二驱动基板包括第三导电端、第四导电端以及连接所述第三导电端和第四导电端的连接带,其 中第二驱动基板的第三导电端通过第二预压力装置的下夹部夹持在对应的驱动元件上,所述第二驱动基板的第四导电端通过第二预压力装置的上夹部夹持在对应的驱动元件上。
- 根据权利要求229到235中任一项所述的用于驱动镜头的驱动组件,其中,所述驱动组件还包括第一承载机构和第二承载机构,第一承载机构和第二承载机构分别具有形成安置空间的多个定位柱,其中第一驱动元件在第一预压力装置的夹持下设置在第一承载机构的安置空间中,并且第一驱动基板的第一导电端和第二导电端分别在第一承载机构的安置空间外部固定在第一承载机构的定位柱上,并且第二驱动元件在第二预压力装置的夹持下设置在第二承载机构的安置空间中,并且第二驱动基板的第三导电端和第四导电端分别在第二承载机构的安置空间外部固定在第二承载机构的定位柱上。
- 根据权利要求247所述的用于驱动镜头的驱动组件,其中,所述第一承载机构和第二承载机构还分别具有承载连接部,所述承载连接部与驱动壳体固定连接,其中所述驱动壳体包括上壳体和与所述上壳体连接成封闭结构的下壳体。
- 一种摄像模组,包括如权利要求229到248中任一项所述的用于驱动镜头的驱动组件;感光组件,用于接受光信号并将接收的光信号转变为图像信号;镜头组,包括固定群组和可调群组,其中所述驱动组件的驱动元件设置用于驱动所述镜头组的可调群组。
- 根据权利要求249所述的摄像模组,其中,所述镜头组的可调群组包括变焦群组和对焦群组,其中所述驱动组件的第一载体用于承载变焦群组的第一载体,所述驱动组件的第二载体用于承载对焦群组,其中第一载体和第二载体能够分别被第一驱动元件和第二驱动元件单独驱动。
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