WO2023093839A1 - 可变光圈装置和带有可变光圈装置的摄像模组 - Google Patents

可变光圈装置和带有可变光圈装置的摄像模组 Download PDF

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Publication number
WO2023093839A1
WO2023093839A1 PCT/CN2022/134292 CN2022134292W WO2023093839A1 WO 2023093839 A1 WO2023093839 A1 WO 2023093839A1 CN 2022134292 W CN2022134292 W CN 2022134292W WO 2023093839 A1 WO2023093839 A1 WO 2023093839A1
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WO
WIPO (PCT)
Prior art keywords
transmission mechanism
blade
driving
variable aperture
aperture device
Prior art date
Application number
PCT/CN2022/134292
Other languages
English (en)
French (fr)
Inventor
鲁晓峰
杨祎
孔艳霞
Original Assignee
宁波舜宇光电信息有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202111413300.9A external-priority patent/CN116165826A/zh
Priority claimed from CN202111448201.4A external-priority patent/CN116208825A/zh
Priority claimed from CN202111443132.8A external-priority patent/CN116208836A/zh
Application filed by 宁波舜宇光电信息有限公司 filed Critical 宁波舜宇光电信息有限公司
Priority to CN202280076438.0A priority Critical patent/CN118215883A/zh
Publication of WO2023093839A1 publication Critical patent/WO2023093839A1/zh

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Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B9/00Exposure-making shutters; Diaphragms
    • G03B9/02Diaphragms
    • G03B9/06Two or more co-operating pivoted blades, e.g. iris type

Definitions

  • the invention relates to the technical field of optical imaging, in particular to a variable aperture device and a camera module with the variable aperture device.
  • variable aperture is an important technical parameter in optical imaging technology, such as camera modules used in cameras and electronic equipment.
  • the variable aperture is an important part of the camera module.
  • the variable aperture has an aperture. By adjusting the area of the aperture, the amount of light entering the camera module can be adjusted, so that the camera module has different brightness and depth of field.
  • the area of the aperture is relatively small. When the aperture is large, the camera module has a larger amount of incoming light, making the formed image brighter and the background blur effect is better. When the area of the aperture is smaller, the camera module has a smaller amount of incoming light, so that in the formed image, The details are clear.
  • the characteristics of the aperture device can affect the function of the camera module.
  • portable devices such as smart phones and tablet computers are small in size and thin in thickness, and the space for installing the camera module is also very small. Therefore, a fixed aperture device with a simple structure is usually provided, but the size of the aperture of the fixed aperture device is fixed, which cannot be better adapted to different shooting scenarios.
  • variable aperture device that can change the aperture size of the camera module of the portable device is needed to meet the needs of the camera module in different shots.
  • the shooting requirements of the scene, and to meet this requirement, a variable aperture device that can adjust the size of the aperture is desired.
  • the volume of the iris in the prior art is generally large, and a driving mechanism is required to drive the iris to move, so that the lens with the iris function is relatively large, which is not conducive to the miniaturization design of the camera module.
  • variable aperture device and a camera module are proposed.
  • a main advantage of the present application is to provide a variable aperture device and a camera module, wherein the variable aperture device has an adjustable aperture, the aperture value of the camera module can be adjusted by changing the size of the aperture, and then Realize the shooting of different aperture values.
  • variable aperture device and a camera module
  • the variable aperture device includes a housing, a blade assembly disposed on the housing, a transmission mechanism, and a driving mechanism, wherein the blades The assembly is connected to the transmission mechanism in a transmission manner, the transmission mechanism is interposed between the housing and the driving mechanism, and the driving mechanism drives the rotation of the transmission mechanism, thereby adjusting the The size of the aperture aperture.
  • Another advantage of the present application is to provide a variable aperture device and a camera module, wherein the driving mechanism is a piezoelectric motor.
  • the piezoelectric motor has a large thrust and a small size, and is suitable for realizing a large-angle rotation of the transmission mechanism.
  • the self-locking function of the piezoelectric motor can also keep the aperture size of the through hole of the blade in the state of no power supply.
  • Another advantage of the present application is to provide a variable aperture device and a camera module, wherein the transmission mechanism is in contact with the drive mechanism, and the drive mechanism drives the transmission mechanism to rotate through friction transmission, which simplifies the The transmission connection of the variable aperture device is beneficial to the miniaturization of the variable aperture device.
  • Another advantage of the present application is to provide a variable aperture device and a camera module, wherein the housing includes an upper cover and a corresponding base, wherein the upper cover and the base form a structural gap, the The blade assembly can protrude from the structural gap and form a blade aperture that can be gradually reduced, wherein the structural gap faces the inner side of the housing, which is beneficial to reduce dust and foreign impurities from entering the housing and avoid damage to the housing.
  • the influence of the variable aperture device mentioned above improves the applicability of the variable aperture device.
  • Another advantage of the present application is to provide a variable aperture device and a camera module, wherein the transmission mechanism is sandwiched between the driving mechanism and the base, and can be adjusted through the upper cover and the base.
  • the pressure between the transmission mechanism and the driving mechanism has a simple structure and high stability.
  • Another advantage of the present application is to provide a variable aperture device and a camera module, wherein the structure of the variable aperture device is simple and does not require expensive equipment and complicated mechanical structures. Therefore, the present application provides an economical and reliable technical solution.
  • variable aperture device of the present application that can achieve the foregoing and other purposes and advantages includes:
  • a housing comprising a base
  • the driving mechanism is arranged on the housing;
  • the blade assembly is rotatably arranged on the base, and is drivingly connected with the transmission mechanism, wherein the drive mechanism drives the transmission mechanism, and the blade assembly is driven by the transmission mechanism , to form a blade through-hole with variable aperture.
  • the driving mechanism includes a piezoelectric assembly and a driving circuit board electrically connected to the piezoelectric assembly, wherein the piezoelectric assembly is in contact with the transmission mechanism and is driven by the The piezoelectric component of the mechanism drives the transmission mechanism to move in a specific direction with frictional force.
  • the piezoelectric assembly includes a piezoelectric element and a friction driving part fixed on the bottom surface of the piezoelectric element, and the driving mechanism passes through the friction driving part and the top of the transmission mechanism.
  • Surface friction contact wherein the piezoelectric element is a ring piezoelectric element.
  • the piezoelectric assembly includes a piezoelectric element and a friction driving part fixed on the bottom surface of the piezoelectric element, and the driving mechanism passes through the friction driving part and the top of the transmission mechanism.
  • Surface friction contact wherein the piezoelectric element is a linear piezoelectric element.
  • the transmission mechanism includes a transmission body and a friction member, wherein the friction member is fixedly connected to the transmission body, and the friction member is in contact with the driving mechanism.
  • the friction member covers the transmission body, the width of the friction member on one side is larger than the width on one side of the transmission body in the lateral direction, and the friction member The top extends inwardly to the blade assembly.
  • the transmission mechanism further includes three or more driving teeth, wherein the driving teeth are integrally formed on the inner side of the transmission main body, wherein the blade assembly and the transmission mechanism Three or more driving teeth are meshed and connected.
  • the blade assembly includes three or more blade elements, and the three or more blade elements are surrounded along the same direction to form the blade through hole.
  • each blade element includes a blade body and a shaft sleeve connected to the blade body and supporting the rotation of the blade body, wherein the shaft sleeve is rotatably arranged on the base, and is connected with the blade body.
  • the transmission mechanism is connected, and the transmission mechanism drives each of the blade elements to rotate axially, so as to adjust the diameter of the blade through hole.
  • the bushing includes a bushing main body and driven teeth integrally formed on the bushing main body, wherein the driven teeth of each of the blade elements are connected to the driven teeth of the transmission mechanism.
  • the drive teeth are meshedly connected.
  • the housing further includes an upper cover, and the upper cover is disposed in alignment with the base, wherein the driving mechanism, the transmission mechanism and the blade assembly are held on the upper cover.
  • the cover and the base form an accommodating space, and the pressure between the driving mechanism and the transmission mechanism is adjusted through the upper cover and the base.
  • the housing is further provided with a housing through hole and a structural gap, and the structural gap of the housing communicates with the housing through hole of the housing and the housing The accommodating space allows the vane assembly to protrude from the structural gap to the casing through hole.
  • the structural gap of the housing is formed between the upper cover and the base.
  • the base includes a base body and at least one first protrusion and at least one second protrusion extending from the base body toward the blade assembly, the first protrusion is located at the The inner side of the second convex part, the first convex part and the second convex part are fixed to the base body by integral molding, wherein each of the blade elements is supported on the first convex part of the base the convex portion and the second convex portion.
  • annular groove is further formed between the first protrusion and the second protrusion.
  • the second protrusion further includes three or more limiting protrusions, and each of the blade units of the blade assembly is rotatably supported on each of the limiting protrusions.
  • the second protrusion further includes one or more limit protrusions
  • each limit baffle of the transmission mechanism includes a first limit baffle and a second limit baffle
  • a limiting area of the limiting baffle is formed between the first limiting baffle and the second limiting baffle, and at least a part of the limiting protrusion of the base extends into the limiting The limiting area of the baffle.
  • the maximum rotation angle of the blade element is 3°.
  • it further includes a support assembly disposed on the top surface of the base, the transmission mechanism is supported above the support assembly of the base, and the transmission mechanism is sandwiched between The support assembly and the drive mechanism of the base.
  • the support assembly further includes a plurality of sliders, and the sliders are raised hemispherical structures.
  • the base further includes at least three limit posts extending from the base main body to the direction of the blade assembly, the at least three limit posts are in contact with the outer wall of the transmission mechanism, Furthermore, the translation or inclination of the transmission mechanism is limited.
  • the present application further provides a camera module, including:
  • variable aperture device as described above, wherein the variable aperture device is located on the light incident side of the lens assembly.
  • a main advantage of the present invention is to provide an iris device and a camera module with the iris device, wherein the iris device has a light aperture with a variable aperture, by adjusting the aperture of the aperture The aperture adjusts the amount of light entering the camera module, which is beneficial to meet the requirements of the camera module for the amount of light entering.
  • variable aperture device and a camera module with the variable aperture device
  • the variable aperture device includes a casing, a drive assembly, a transmission mechanism, and a ground that is driven with the transmission mechanism A connected blade assembly, wherein the drive assembly is disposed on the casing and is located at a side of the transmission mechanism.
  • the drive assembly drives the transmission mechanism to move without increasing the height, which is beneficial to the miniaturization of the variable aperture device and the camera module.
  • Another advantage of the present invention is to provide a variable aperture device and a camera module with the variable aperture device, wherein the driving assembly includes a driving member, a movable part, a fixed part, and a restoring member, wherein the driving member can drive The movable part further drives the transmission mechanism to rotate relative to the base, and the restoring member can drive the movable part and then drive the transmission mechanism to return to its original position after the driving stops.
  • Another advantage of the present invention is to provide a variable aperture device and a camera module with the variable aperture device, wherein the driving member is an SMA wire, which simplifies the driving while meeting the rotation requirements of the transmission mechanism The structure of the component.
  • Another advantage of the present invention is to provide a variable aperture device and a camera module with the variable aperture device, wherein the driving member is a helical SMA wire and the bent SMA wire can increase the length of the SMA, increase the The active itinerary of the SMA line.
  • variable aperture device of the present invention capable of achieving the aforementioned object and other objects and advantages includes:
  • a transmission mechanism wherein the transmission mechanism is rotatably arranged on the housing, engages with the blade assembly, and drives the blade assembly through the transmission mechanism to form a light through hole with a variable aperture;
  • a drive assembly the drive assembly further includes a drive member and a return member, wherein the drive member and the return member are fixed to the housing and are rotatably connected to the transmission mechanism, wherein the drive member can A force for driving the transmission mechanism to rotate is provided, and the restoring member provides a force for reverse rotation to drive the transmission mechanism to rotate reciprocally through the driving member and the restoring mechanism.
  • it further includes at least one movable part, wherein the at least one movable part is connected to the transmission mechanism, and the driving member and the restoring member of the driving assembly are telescopically connected on the at least one movable part.
  • the driving member further includes a driving member trailing end and a driving member fixed end
  • the restoring member further includes a restoring member trailing end and a restoring member fixing end
  • the driving member fixed end and the The fixed end of the restoring member is fixed to the housing
  • the movable part is driveably connected to the trailing end of the driving member and the trailing end of the restoring member
  • the trailing end of the driving member and the trailing member pull The end is located on the opposite side of the movable part, and the transmission mechanism is driven to rotate reciprocally by the driving member and the restoring member through the movable part.
  • the driving member and the restoring member are fixed on the same side of the housing, and the trailing end of the driving member, the trailing end of the restoring member and the movable part are the same line.
  • the driving member fixing end and the restoring member fixing end of the driving member are fixed on adjacent sides of the housing.
  • it further includes a fixing part, wherein the fixing part is fixed to the housing, and the fixed end of the driving member and the fixing end of the restoring member are fixed to the fixed part by the fixing part. the housing.
  • the fixed part includes a first fixed part and a second fixed part, wherein the driving member is telescopically arranged between the first fixed part and the movable part, The restoring member is telescopically disposed between the second fixed part and the movable part.
  • the driving member is a straight SMA wire.
  • the driving member further includes that the driving member includes at least one curved section and at least two straight sections integrally extending from the curved section.
  • the driving member is a helical SMA wire.
  • the restoring member is selected from a combination of elastic elements consisting of a spring and a shrapnel.
  • the restoring member is an SMA wire.
  • M is the shrinkage of the driving member
  • is the rotation angle of the transmission mechanism
  • L is the distance from the axis O to the straight line where the driving member is located along the length direction
  • the housing includes a base and a cover fastened to the base, wherein the base further includes a base body and at least one winding post disposed on the base body, The at least one winding post is integrally formed on the base body, and the curved section is in contact with the winding post, and the two straight sections of the driving member are located on adjacent sides of the base.
  • the transmission mechanism includes a transmission body and a moving end provided on the transmission body, wherein the moving end integrally extends outward from the outside of the transmission body, and the movement The end is drivingly connected with the movable part.
  • the blade assembly includes a plurality of blade elements, wherein each blade element includes a blade body and a blade hub, wherein the blade body is connected to the blade hub, wherein the
  • the transmission mechanism includes a transmission main body and a plurality of driving teeth, wherein the transmission main body is in an annular structure, and the plurality of driving teeth are arranged on the inside of the transmission main body, wherein the blade sleeve is connected to all the transmission mechanisms. mesh with the drive gear.
  • the housing includes a cover and a base, wherein the base and the cover can be fastened together to form a receiving cavity, which is used to accommodate the The driving assembly, the blade assembly and the transmission mechanism, wherein the base includes a base body and a first protrusion and a second protrusion formed on the base body, and a first protrusion and a second protrusion formed on the base body
  • the limit baffle set includes a first limit baffle and a second limit baffle, the first limit baffle and the second limit baffle form the limit groove, and the limit baffle The limit groove located in the limit baffle set.
  • a cover plate is further included, and the cover plate is arranged between the cover body and the transmission mechanism.
  • it further includes an electrical connection element, wherein the electrical connection element is disposed on the housing, and the electrical connection element is electrically connected to the driving assembly.
  • the present application further provides a camera module, including:
  • variable aperture device as described above, wherein the variable aperture device is arranged on the light incident side of the lens assembly.
  • variable aperture device and camera module are proposed.
  • a main advantage of the present invention is to provide an iris device and a camera module with the iris device, wherein the iris device has a light aperture with a variable aperture, by adjusting the aperture of the aperture The aperture adjusts the amount of light entering the camera module, which is beneficial to meet the requirements of the camera module for the amount of light entering.
  • variable aperture device and a camera module with the variable aperture device
  • the variable aperture device includes a casing, a drive assembly, a transmission mechanism, and a ground that is driven with the transmission mechanism A connected blade assembly, wherein the drive assembly is disposed on the casing and is located at a side of the transmission mechanism.
  • the drive assembly drives the transmission mechanism to move without increasing the height, which is beneficial to the miniaturization of the variable aperture device and the camera module.
  • Another advantage of the present invention is to provide a variable aperture device and a camera module with the variable aperture device, wherein the driving assembly includes a driving member, a movable part, a fixed part, and a restoring member, wherein the driving member can drive The movable part further drives the transmission mechanism to rotate relative to the base, and the restoring member can drive the movable part and then drive the transmission mechanism to return to its original position after the driving stops.
  • Another advantage of the present invention is to provide a variable aperture device and a camera module with the variable aperture device, wherein the driving member is an SMA wire, which simplifies the driving while meeting the rotation requirements of the transmission mechanism The structure of the component.
  • Another advantage of the present invention is to provide a variable aperture device and a camera module with the variable aperture device, wherein the driving member is a helical SMA wire and the bent SMA wire can increase the length of the SMA, increase the The active itinerary of the SMA line.
  • variable aperture device of the present invention capable of achieving the aforementioned object and other objects and advantages includes:
  • a transmission mechanism wherein the transmission mechanism is rotatably arranged on the housing, and is connected to the blade assembly in a driving manner, and the blade assembly is driven by the transmission mechanism to form a light hole with a variable aperture; as well as
  • a drive assembly the drive assembly further includes a drive member, a return member, a first guide mechanism and a second guide mechanism, wherein the drive member is arranged on the first guide mechanism, and the return member is arranged on In the second guiding mechanism, the driving member is supported to move telescopically by the first guiding mechanism, and the restoring mechanism is supported to move telescopically by the second guiding mechanism, wherein the driving member and The restoring member is driveably connected to the transmission mechanism, so as to drive the transmission mechanism to rotate reciprocally through the driving member and the restoration mechanism.
  • the first guiding mechanism and the second guiding mechanism are hollow tubular structures, wherein the driving member is built into the first guiding mechanism, and the returning A component is built into the second guide mechanism.
  • the first guiding mechanism and the second guiding mechanism are support rod structures, wherein the first guiding mechanism is placed on the driving member, and the second guiding mechanism A mechanism is placed on the return member.
  • the first guiding mechanism and the second guiding mechanism are elongated structures, and the first guiding mechanism and the second guiding mechanism are located in the shell same side of the body.
  • the first guiding mechanism and the second guiding mechanism are arc-shaped.
  • the first guide mechanism and the second guide mechanism are symmetrically arranged on the circumferential outer side of the transmission mechanism relative to the transmission mechanism.
  • it further includes at least one movable part, wherein the at least one movable part is connected to the transmission mechanism, and the driving member and the restoring member of the driving assembly are telescopically connected to the The at least one movable part.
  • the driving member further includes a driving member trailing end and a driving member fixed end
  • the restoring member further includes a restoring member trailing end and a restoring member fixing end
  • the driving member fixed end and the The fixed end of the restoring member is fixed to the housing
  • the movable part is driveably connected to the trailing end of the driving member and the trailing end of the restoring member
  • the trailing end of the driving member and the trailing end of the restoring member Located on the opposite side of the movable part, the transmission mechanism is driven to rotate reciprocally by the driving member and the restoring member through the movable part.
  • the driving member and the restoring member are fixed on the same side of the housing, and the trailing end of the driving member, the trailing end of the restoring member and the movable part are on the same side. straight line.
  • it further includes a fixing part, wherein the fixing part is fixed to the housing, and the fixing end of the driving member and the fixing end of the restoring member are fixed to the housing by the fixing part. case.
  • the fixed part includes a first fixed part and a second fixed part, wherein the driving member is telescopically arranged between the first fixed part and the movable part, so The restoration member is telescopically disposed between the second fixed part and the movable part.
  • the driving member is selected from a combination of straight SMA wires, elongated helical SMA wires and arc-shaped helical SMA wires.
  • the restoring member is selected from a combination of elastic elements consisting of a spring and a shrapnel.
  • the restoring member is selected from a combination of straight SMA wires, elongated helical SMA wires and arc-shaped helical SMA wires.
  • M is the shrinkage of the driving member
  • is the rotation angle of the transmission mechanism
  • L is the distance from the axis O to the straight line where the driving member is located along the length direction
  • the transmission mechanism includes a transmission body and a moving end disposed on the transmission body, wherein the moving end integrally extends outward from the outside of the transmission body, and the moving end It is drivingly connected with the movable part.
  • the blade assembly includes a plurality of blade elements, wherein each of the blade elements includes a blade body and a blade hub, wherein the blade body is connected to the blade hub, and each of the blades The vane bushing of the element engages with the transmission mechanism.
  • the housing includes a cover and a base, wherein the base and the cover can be fastened to each other to form a storage cavity for accommodating the The drive assembly, the blade assembly and the transmission mechanism, wherein the base includes a base body and a first protrusion and a second protrusion formed on the base body, and a first protrusion and the second protrusion formed on the base body
  • the The limit baffle set includes a first limit baffle and a second limit baffle, the first limit baffle and the second limit baffle form the limit groove, and the limit baffle Located in the limiting groove of the limiting baffle group.
  • a cover plate is further included, and the cover plate is arranged between the cover body and the transmission mechanism.
  • an electrical connection element is further included, wherein the electrical connection element is disposed on the housing, and the electrical connection element is electrically connected to the driving assembly.
  • the application further provides a camera module, including:
  • variable aperture device as described above, wherein the variable aperture device is arranged on the light incident side of the lens assembly.
  • FIG. 1 is an exploded schematic view of a variable aperture device according to a first preferred embodiment of the present application.
  • Fig. 2A is a schematic top view of the variable aperture device according to the first preferred embodiment of the present application, which shows the maximum aperture state of the variable aperture device.
  • Fig. 2B is a schematic top view of the variable aperture device according to the first preferred embodiment of the present application, which shows the minimum aperture state of the variable aperture device.
  • FIG. 3 is an enlarged schematic view of a blade of the variable aperture device according to the first preferred embodiment of the present application.
  • FIG. 4 is a schematic cross-sectional view of the variable aperture device according to the first preferred embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a base of the variable aperture device according to the first preferred embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a driving assembly of the variable aperture device according to the above-mentioned first preferred embodiment of the present application.
  • Fig. 7 is a schematic diagram of some structural components of the variable aperture device according to the first preferred embodiment of the present application.
  • Fig. 8 is a cross-sectional view of the three-dimensional structure of the variable aperture device according to the above-mentioned first preferred embodiment of the present application.
  • Fig. 9A is a schematic diagram of another optional implementation manner of the variable aperture device according to the above-mentioned first preferred embodiment of the present application.
  • Fig. 9B is a top view of another optional implementation manner of the variable aperture device according to the above-mentioned first preferred embodiment of the present application.
  • FIG. 9C is a schematic diagram of a driving assembly of another optional implementation manner of the variable aperture device according to the above-mentioned first preferred embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a camera module according to another aspect of the present application.
  • FIG. 11 is an exploded schematic view of a variable aperture device according to the first preferred embodiment of the present invention.
  • Fig. 12 is a schematic structural diagram of a blade assembly of the variable aperture device according to the first preferred embodiment of the present invention.
  • Fig. 13 is a top view of the variable aperture device according to the first preferred embodiment of the present invention, which shows the meshing state of a transmission mechanism of the variable aperture device and the blade assembly.
  • Fig. 14 is a schematic diagram of the transmission mechanism of the variable aperture device according to the first preferred embodiment of the present invention.
  • Fig. 15 is the description according to the above-mentioned first preferred embodiment of the present invention, which shows the connection state of a drive assembly and the transmission mechanism of the variable aperture device.
  • FIG. 16 is a schematic structural diagram of a casing of the variable aperture device according to the first preferred embodiment of the present invention.
  • Fig. 17 is a cross-sectional view of the three-dimensional structure of the variable aperture device according to the first preferred embodiment of the present invention.
  • FIG. 18 is a side view of a base of the casing of the variable aperture device according to the first preferred embodiment of the present invention.
  • FIG. 19 is a cross-sectional view of the variable aperture device according to the first preferred embodiment of the present invention.
  • Fig. 20A and Fig. 20B are schematic diagrams of the movement state of the driving assembly of the variable aperture device according to the above-mentioned first preferred embodiment of the present invention.
  • 21A and 21B are schematic diagrams of the variable aperture device at the initial position and the pulling position according to the above-mentioned first preferred embodiment of the present invention.
  • Fig. 22 is a schematic diagram of another alternative implementation of a driving assembly of the variable aperture device according to the above-mentioned first preferred embodiment of the present invention.
  • 23A and 23B are schematic diagrams of another optional implementation of a driving assembly of the variable aperture device according to the above-mentioned first preferred embodiment of the present invention.
  • Fig. 24A and Fig. 24B are schematic diagrams of another optional implementation of a drive assembly of the variable aperture device according to the above-mentioned first preferred embodiment of the present invention.
  • Fig. 25 is a schematic structural diagram of a camera module according to a preferred embodiment of the present invention.
  • the term “a” should be understood as “at least one” or “one or more”, that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element
  • the quantity can be multiple, and the term “a” cannot be understood as a limitation on the quantity.
  • the application provides a variable aperture device 20 and a camera module using the variable aperture device 20.
  • the variable aperture device 20 changes the size of its aperture Adjust the aperture value of the camera module to achieve shooting with different aperture values.
  • variable aperture device 20 includes a housing 21 , a blade assembly 24 disposed on the housing 21 , a transmission mechanism 23 and a driving mechanism 22 .
  • the blade assembly 24 is rotatably disposed on the housing 21 , the transmission mechanism 23 is driveably connected to the blade assembly 24 and the drive mechanism 22 , wherein the drive mechanism 22 passes through the transmission mechanism 23
  • the blade assembly 24 is driven to rotate to realize the adjustable aperture size of the variable aperture device 20 .
  • the housing 21 includes an upper cover 211 and a base 212, the upper cover 211 and the base 212 form a housing for accommodating and protecting the blade assembly 24, the transmission mechanism 23 and the driving mechanism 22. space.
  • the upper cover 211 is used to cover and protect the upper surface and the side surface of the variable aperture device 20, and the upper cover 211 includes a cover body 2111 with a light hole in the center, Four cover outer parts 2112 integrally connected to the outer side of the cover body 2111 and one cover inner part 2113 located inside the cover body 2111 .
  • the center of the base 212 has a light hole, and the light hole of the upper cover 211 and the light hole of the base 212 constitute the housing through hole 251 of the housing 21, thereby providing the imaging light of the camera module.
  • the light through hole of the upper cover 211 and the light through hole of the base 212 are circular with the same aperture.
  • the housing 21 has a light entrance and a light exit, wherein the light entrance is formed on the light incident side of the upper cover 211 , and the light exit is formed on the base of the housing 21 212 , and the light entrance and the light exit of the housing 21 communicate with the housing through hole 251 of the housing 21 .
  • the upper cover 211 includes a cover body 2111
  • the base 212 includes a base body 2121 and four base side portions integrally extending upward along the periphery of the base body 2121. , the base 212 is bonded and fixed to the upper cover 211 through the four base side portions.
  • the light through hole of the upper cover 211 and the light through hole of the base 212 are arranged coaxially, so as to reduce stray light while satisfying the passage of imaging light Imaging interference to the camera module.
  • the blade assembly 24 is connected to the transmission mechanism 23 in a driving manner, and the transmission mechanism 23 drives the blade assembly 24 to rotate in a specific direction.
  • the transmission mechanism 23 is interposed between the base 212 of the casing 21 and the driving mechanism 22 . Therefore, in this preferred embodiment of the present application, the driving mechanism 22 and the base 212 are located on opposite sides of the transmission mechanism 23 .
  • the base 212 is located under the transmission mechanism 23 and the blade assembly 24
  • the drive mechanism 22 is located under the transmission mechanism 23 and the blade assembly 24 above, wherein the transmission mechanism 23 and the blade assembly 24 are supported by the base 212 of the housing 21, and the transmission mechanism 23 can be supported by the drive mechanism 22 under the support of the base 212 Driven, and the blade assembly 24 is driven to rotate by the transmission mechanism 23 .
  • the blade assembly 24 includes three or more blade elements 241, and the three or more blade elements 241 are enclosed in the counterclockwise (or clockwise) direction and form a blade channel with a variable aperture. Hole 252. It can be understood that when the number of blade elements 241 of the variable aperture device 20 is greater, the blade through hole 252 surrounded by the three or more blade elements 241 is closer to a circle, so that the camera module has a better performance. Imaging effect.
  • the blade through hole 252 has a central axis, and the central axis is perpendicular to the plane formed by the three or more blade elements 241, and the three or more blade elements 241 surround the blades.
  • the central axis of the through hole 252 is rotationally symmetrical, so that the pattern of the vane through hole 252 formed is a rotationally symmetrical pattern.
  • the three or more vane elements 241 are rotationally symmetrical around the center of the vane through hole 252 when viewed from the top view (ie, the light incident direction), and the shapes of each of the vane elements 241 are the same.
  • the variable aperture device 20 has a aperture through hole 25 with a variable aperture, and the aperture size of the aperture through hole 25 can be adjusted according to the shooting requirements of the camera module.
  • the aperture size of the aperture through hole 25 may be determined by the minimum aperture of the blade through hole 252 or other elements in the variable aperture device 20 .
  • both the maximum aperture state and the minimum aperture state of the aperture through hole 25 of the variable aperture device 20 are determined by the blade through hole 252 surrounded by the three or more blade elements 241 , that is, the three or more blade elements 241 change the aperture size of the aperture through hole 25 of the variable aperture device 20 .
  • the aperture through hole 25 formed by the variable aperture device 20 is located between the light entrance and the light exit port of the housing 21 , and the aperture through hole 25 of the variable aperture device 20 25 determines the amount of light entering the variable aperture device 20 . That is to say, the blade through hole 252 formed by the blade assembly 24 is located inside the housing through hole 251 of the housing 21 , and is defined by the movement of each of the blade elements 241 of the blade assembly 24 . The size of the aperture of the blade through hole 252 is used to adjust the amount of incoming light of the variable aperture device 20 .
  • the minimum aperture state of the aperture through hole 25 of the variable aperture device 20 is determined by the blade through hole 252 surrounded by the three or more blade elements 241
  • the The maximum aperture state of the aperture through hole 25 of the variable aperture device 20 is determined by the minimum aperture of other components in the variable aperture device 20 (such as the casing through hole 251 of the casing 21 ).
  • the aperture diameter of the blade through hole 252 surrounded by the three or more blade elements 241 becomes smaller, the aperture diameter of the aperture through hole 25 of the variable aperture device 20 becomes smaller.
  • the housing 21 is further provided with a structural gap 210, wherein the structural gap 210 communicates with the housing through hole 251 of the housing 21 and all of the housing 21 Said accommodation space.
  • the vane assembly 24 located in the accommodating space of the housing 21 can be driven to protrude from the structural gap 210 of the housing 21 to the housing through hole 251 of the housing 21 or the blade assembly 24 can be driven to retract from the casing through hole 251 of the casing 21 to the structural gap 210 of the casing 21 . It is worth mentioning that, in an initial state, the blade assembly 24 is held in the accommodating space of the housing 21 , that is, the variable aperture device 20 is in a maximum aperture state.
  • the structural gap 210 of the housing 21 is formed between the upper cover 211 and the base 212 of the housing 21 , wherein the structural gap 210 of the housing 21
  • the dimension in the height direction is adapted to the thickness of the blade assembly 24 to allow the blade assembly 24 to extend or retract.
  • the surface of the upper cover 211 and the base 212 of the housing 21 is a closed structure, and the structural gap 210 that allows the blade assembly 24 to extend and retract is formed on the upper cover 211 .
  • the inside of the cover 211 and the base 212 can prevent impurities such as dust from entering the accommodating space of the housing 21 .
  • each blade element 241 includes a blade body 2411 and a shaft sleeve 2412 connected with the blade body 2411 and supporting the rotation of the blade body 2411 .
  • the vane main body 2411 of each vane element 241 can rotate based on an axis direction of the bushing 2412 .
  • Each of the blade elements 241 is rotatably arranged on the base 212, wherein each of the blade elements 241 is supported by the base 212, and the shaft sleeve 2412 of each of the blade elements 241 is connected to the transmission mechanism 23 are connected in a transmission manner, and the transmission mechanism 23 drives the shaft sleeve 2412 of each blade element 241 to move.
  • each of the blade elements 241 is driven by the transmission mechanism 23 , under the support of the base 212 , the blade main body 2411 bases on the shaft sleeve 2412 Do the movement of the axis.
  • the blade body 2411 includes a blade root 24114 close to the shaft sleeve 2412, a blade end 24111 away from the shaft sleeve 2412, connecting the blade root 24114 and the blade end 24111 and located on the inner side (near the blade through hole 252-
  • At least a part of the blade inner portion 24112 of the blade main body 2411 of the blade element 241 constitutes the periphery of the blade through hole 252 of the blade assembly 24 .
  • a part of the same position of the blade inner side 24112 of each blade element 241 constitutes the periphery of the blade through hole 252 of the blade assembly 24, and the blades of each blade element 241
  • the inner side 24112 has the same shape.
  • the shape of the blade through hole 252 surrounded by the blade body 2411 of each blade element 241 is a rotationally symmetrical pattern. That is to say, the blade main body 2411 is fixed to the shaft sleeve 2412 through the blade end 24111 .
  • the blade body 2411 of the blade element 241 of each blade element 241 is located above or below the blade body 2411 of the previous blade element 241 (in the counterclockwise direction). Specifically, in the counterclockwise direction, in one embodiment of the present application, the blade main body 2411 of the blade element 241 of each blade element 241 is located above the blade body 2411 of the previous blade element 241 and the blade element 2411 of the rear blade element 241 below the blade main body 2411. In another embodiment of the present application, the blade body 2411 of each blade element 241 of each blade element 241 is located below the blade body 2411 of the previous blade element 241 and above the blade body 2411 of the rear blade element 241 .
  • the blade elements 241 of the blade assembly 24 are sequentially arranged in a clockwise or counterclockwise direction, and each blade element 241 of the blade assembly 24 241 surrounds the blade through-hole 252 with a variable inner diameter.
  • the blade assembly 24 is driven by the drive mechanism 22 through the transmission mechanism 23 to drive each blade unit 241 to move in an axial manner based on the sleeve 2412 , In order to adjust the inner diameter of the blade through hole 252 .
  • the blade main bodies 2411 of the blade elements 241 of each of the blade elements 241 are respectively located above and below the blade main bodies 2411 of two adjacent blade elements 241 , in other words, the three Or above, the vane main body 2411 of the vane element 241 is arranged alternately in height.
  • each vane element 241 of the vane assembly 24 extends clockwise and encloses a vane through hole 252 , and the present application is not limited thereto.
  • the number of the blade elements 241 of the blade assembly 24 is eight, that is, the blade main body 2411 of each blade element 241 of the blade assembly 24 forms the blade assembly 24 The blade through hole 252.
  • the number of the blade elements 241 of the blade assembly 24 is an odd number, which can disperse the light of the subject with high brightness, avoid strong light beams, and make the imaging softer.
  • the blade main body 2411 and the shaft sleeve 2412 are integrally formed.
  • the blade main body 2411 and the sleeve 2412 are fixed by bonding, and the blade main body 2411 and the sleeve 2412 are made of two different materials. In this way, the thickness of the blade main body 2411 can be kept relatively thin, and the mechanical strength of the shaft sleeve 2412 can also be kept.
  • the blade assembly 24 has a maximum aperture state and a minimum aperture state, and the blade assembly 24 is supported by the base 212 and passed by the drive mechanism 22.
  • the transmission mechanism 23 drives each of the blade elements 241 to switch between the maximum aperture state and the minimum aperture state.
  • 2A and 2B respectively show the schematic diagrams of the blade assembly 24 in two states of maximum aperture and minimum aperture.
  • each blade element 241 rotates in a direction away from the center of the blade through hole 252 based on the axial direction of the bushing 2412 , so that the diameter of the blade through hole 252 of the blade assembly 24 becomes larger.
  • the shaft sleeve 2412 of each blade unit 241 is connected to the transmission mechanism 23 in a driving manner, and the transmission mechanism 23 drives the shaft sleeve 2412 so that the support of each blade unit 241 on the base 212 Under action, it is based on an axial direction rotation of the shaft sleeve 2412 .
  • the bushing 2412 of each blade unit 241 is engaged with the transmission mechanism 23 . Therefore, when the transmission mechanism 23 is driven by the driving mechanism 22 to generate an axial rotation, the transmission mechanism 23 drives each of the blade units 241 engaged with it to rotate axially.
  • at least one blade unit 241 of the blade assembly 24 may be connected to the transmission mechanism 23 through other transmission methods, such as frictional contact, hinge connection and the like.
  • the bushing 2412 of the vane element 241 includes a bushing main body 24121 and driven teeth 24122 integrally formed on the bushing main body 24121 .
  • the blade main body 2411 is fixedly connected to one end of the bushing main body 24121, and the driven teeth 24122 are fixed to the other end of the bushing main body 24121 by integral molding.
  • the driven teeth 24122 of the bushing 2412 It includes a plurality of driven gear teeth 241221, and the driven teeth 24122 are located on the same plane as the sleeve main body 24121.
  • the transmission mechanism 23 includes a transmission main body 231, three or more driving teeth 232 formed on the inside of the transmission main body 231, and or more than a limit baffle 233. There is a through hole in the middle of the transmission mechanism 23, and the three or more driving teeth 232 and the one or more upper limit baffles 233 are integrally formed on the inner side of the transmission mechanism 23 (towards the side of the blade element 241 ).
  • Each of the driving teeth 232 of the transmission mechanism 23 meshes with each of the blade units 241 , wherein the transmission mechanism 23 drives each of the blade units 241 to rotate through each of the driving teeth 232 .
  • the transmission main body 231 of the transmission mechanism 23 has an annular turntable structure, wherein each blade unit 241 of the blade assembly 24 is engaged inside the transmission main body 231 of the transmission mechanism 23 , That is, each of the blade units 241 is in transmission connection with the transmission main body 231 of the transmission mechanism 23 , and the transmission mechanism 23 drives each of the internal blade units 241 to move.
  • each of the driving teeth 232 includes a plurality of driving teeth 2321 , and the driving teeth 232 mesh with a plurality of driven teeth 241221 of the driven teeth 24122 of the bushing 2412 through the driving teeth 2321 . Therefore, by rotating the transmission mechanism 23 , the rotation of the blade element 241 is realized by the meshing relationship between the driven teeth 24122 and the driving teeth 232 .
  • the vane end 24111 of the vane body 2411 fixed to the bushing 2412 moves toward or away from the center of the vane through hole 252 to realize the adjustment of the diameter of the vane through hole 252 of the vane assembly 24 .
  • the number of the driving teeth 2321 is greater than the number of the driven teeth 241221 missing one.
  • the number of the driven gear teeth 241221 is four, and the number of the driving gear teeth 2321 is three; in another embodiment of the application, the number of the driving gear teeth 2321 is equal to or greater than the at least two The number of driving gear teeth 241221.
  • the number of the plurality of driven gear teeth 241221 is four, and the number of the driving gear teeth 2321 is four, five, or even more. In other words, let the number of the driving gear teeth 2321 be M, and set the number of the plurality of driven gear teeth 241221 to be N, in order to keep the driven teeth 24122 from jumping or falling off during the driving process, where M ⁇ N-1.
  • the number of the driving teeth 232 of the transmission mechanism 23 is consistent with the number of the blade elements 241, so that each driving tooth 232 can correspond to a slave on a blade element 241. Movable teeth 24122.
  • the number of the driving teeth 232 of the transmission mechanism 23 is eight, and the eight driving teeth 232 mesh with the driven teeth 24122 on the eight blade elements 241 respectively.
  • the base 212 includes a base body 2121 and at least one first protrusion 2122 and at least one second protrusion 2123 extending from the base body 2121 toward the blade assembly 24 .
  • the first protruding portion 2122 is located inside the second protruding portion 2123 , and the first protruding portion 2122 and the second protruding portion 2123 are fixed to the base body 2121 by integral molding.
  • the top surface of the second protrusion 2123 supports the bushing 2412 of the three or more blade elements 241
  • the top surface of the first protrusion 2122 supports the blade main body 2411 of the three or more blade elements 241 .
  • the height of the top surface of the first protrusion 2122 and the top surface of the second protrusion 2123, and the positions of the three or more blade elements 241 can be adjusted and set.
  • An annular groove 2124 is also formed between the first protrusion 2122 and the second protrusion 2123, and the annular groove 2124 reduces the contact between the top surface of the second protrusion 2123 and the three or The contact area of the sleeve 2412 of the vane element 241 is above the contact area, thereby reducing the frictional resistance of the sleeve 2412 when moving. Therefore, by adjusting the width of the annular groove 2124 , the frictional resistance produced by the sleeve 2412 when the blade element 241 moves is adjusted.
  • dust-catching glue is arranged in the annular groove 2124, so that the dust-catching glue can capture dirt such as dust entering the drive casing and from the casing through hole 251. Sewage.
  • the structural slit 210 is formed on the first protrusion 2122 of the base 212 and the cover inner side 2113 of the upper cover 211 Between, that is, the docking position of the upper cover 211 and the base 212 .
  • the structural gap 210 is an interface through which the casing 21 of the variable aperture device 20 communicates with the outside world, and is an opening formed inside the casing 21 to allow the blade assembly 24 to rotate. , reducing the diameter of the blade through hole 252 .
  • the height of the top surface of the first convex portion 2122 is slightly higher than the height of the top surface of the second convex portion 2123 , and the blade body 2411 of each blade element 241 The position of can be set at a relatively high position in the variable aperture device 20 .
  • the height of the top surface of the first convex portion 2122 is lower than the height of the top surface of the second convex portion 2123, so that the three or more blade elements
  • the position of the blade body 2411 of 241 may be set at a relatively lower position in the variable aperture device 20 .
  • the second protrusion 2123 further includes three or more limiting protrusions 21231 , and the number of the limiting protrusions 21231 is consistent with the number of the vane elements 241 .
  • Each of the blade units 241 of the blade assembly 24 is supported by the second protrusion 2123 , and is limited by each of the limiting protrusions 21231 of the second protrusion 2123 to move in a rotational manner.
  • the transmission mechanism 23 drives each of the vane elements 241 to rotate, each of the vane elements 241 is restricted by each of the position-limiting projections 21231 , and based on each of the position-limiting protrusions of the second protrusion 2123 21231 rotates axially.
  • each blade element 241 has a shaft hole 24123 formed in the shaft sleeve body 24121 , and each of the blade elements 241 is rotatable through the shaft hole 24123 of the shaft sleeve 2412 respectively.
  • the limiting protrusion 21231 is fixed on the base 212 .
  • the diameter of the blade through hole 252 becomes smaller, and the aperture of the variable aperture device 20 becomes smaller.
  • the number of the limiting protrusions 21231 is eight, and the eight blade elements 241 pass through the shaft hole 24123 on the blade element 241 and the eight limiting protrusions respectively.
  • the protrusion 21231 cooperates and is rotatably fixed on the base 212 .
  • each of the limiting protrusions 21231 is equally spaced and evenly distributed on a circular track on the top surface of the second protrusion 2123 of the base 212 .
  • the blade through holes 252 formed in the blade body 2411 of each of the blade elements 241 are arranged in a symmetrical shape.
  • the second protrusion 2123 further includes one or more limit protrusions 21232
  • each limit stopper 233 of the transmission mechanism 23 includes a first limit stopper 2331 and a second limit stopper 2331.
  • the limiting baffle 2332, and the limiting area 2333 of the limiting baffle 233 is formed between the first limiting baffle 2331 and the second limiting baffle 2332, the one of the base 212 Or at least a part of the limit protrusion 21232 protrudes into the limit area 2333 of the limit baffle 233 , the width of the limit area 2333 of the limit baffle 233 is greater than the width of the limit protrusion 21232 ,
  • the rotation angles of the three or more blade elements 241 are limited by one or more limit protrusions 21232 of the base 212 and the one or more limit baffles 233 .
  • the transmission mechanism 23 is restricted by the limiting protrusion 21232 of the base 212 , so that the maximum rotation
  • the number of the one or more upper limit protrusions 21232 is eight, and the eight limit protrusions 21232 and the eight limit protrusions 21231 are arranged alternately in the circumferential direction. Describe the top surface of the second protrusion.
  • the number of the one or more limit baffles 233 is consistent with the number of the limit protrusions 21232, and its number is also eight. Eight limit baffles 233 cooperate with eight limit protrusions 21232, and eight limit baffles are limited. The maximum rotation angle of each blade assembly 24.
  • the eight limiting baffles 233 and the eight driving teeth 232 extend from the transmission mechanism 23 to the center alternately, and the interval between the eight limiting baffles 233 Equal, the intervals between the eight driving teeth 232 are equal.
  • the base 212 further includes at least three limit posts 2128 extending from the base main body 2121 to the direction of the blade assembly 24, the at least three The limiting column 2128 is located outside the limiting protrusion 21232 and is fixed to the base body 2121 by integral molding or bonding.
  • the transmission mechanism 23 when the transmission mechanism 23 rotates, in order to prevent the transmission mechanism 23 from translating or tilting, the transmission mechanism 23 has a circular outer wall, and the at least three limiting columns 2128 and the The outer wall of the transmission mechanism 23 is in contact with each other, thereby limiting the translation or inclination of the transmission mechanism 23 .
  • the number of the at least three limit posts 2128 is three, and the three limit posts 2128 are equally spaced on the outer wall of the transmission mechanism 23 and connected to the transmission mechanism 23.
  • the outer walls are in contact, and the shape of the three limiting columns 2128 is a cylinder.
  • the transmission mechanism 23 is driven by the driving mechanism 22 to realize rotation, thereby driving the rotation of the blade element 241, realizing the adjustment of the aperture size of the blade through hole 252, thereby realizing continuous adjustment or step adjustment of the aperture of the camera module .
  • the driving mechanism 22 is implemented as a piezoelectric motor, wherein the piezoelectric motor has a large thrust and a small size, which facilitates the large-angle rotation of the transmission mechanism 23, and the self-locking function of the piezoelectric motor It is also possible to maintain the diameter of the blade through hole 252 in a state where no power is applied.
  • FIG. 6 shows an embodiment of the driving mechanism 22 of the present application.
  • the driving mechanism 22 is located above the transmission mechanism 23 and is trivably connected to the transmission mechanism 23 .
  • the driving mechanism 22 includes a piezoelectric assembly 221 and a driving circuit board 223 electrically connected to the piezoelectric assembly 221, and the piezoelectric assembly 221 and the transmission mechanism 23
  • the driving circuit board 223 can provide excitation power for the piezoelectric component 221 so that the piezoelectric component 221 can drive the transmission mechanism 23 to rotate in a specific direction.
  • the transmission mechanism 23 is sandwiched between the base 212 of the casing 21 and the piezoelectric assembly 221 of the driving mechanism 22, wherein the piezoelectric assembly 221 of the driving mechanism 22 is connected to the piezoelectric assembly 221 of the driving mechanism 22.
  • the transmission mechanism 23 is in contact with the transmission mechanism 23, and the transmission mechanism 23 is driven to move in a specific direction by the piezoelectric component 221 of the driving mechanism 22 with friction force.
  • the driving circuit board 223 includes a circuit board main body 2231 and an electrical connection part 2232 electrically connected to each other. There is a through hole in the middle of the circuit board main body 2231 to provide light through. Extend outward and bend.
  • the driving circuit board 223 is electrically connected to the piezoelectric assembly 221 through the circuit board main body 2231 , and is electrically connected to an external circuit through the electrical connection portion 2232 .
  • the piezoelectric component 221 is in a ring, arc or semi-ring structure.
  • the piezoelectric assembly 221 includes a piezoelectric element 2211 and a friction driving part 2212 fixed on the bottom surface of the piezoelectric element 2211, and the driving mechanism 22 rubs against the top surface of the transmission mechanism 23 through the friction driving part 2212 touch.
  • the piezoelectric element 2211 has a ring-shaped structure, and the center of the piezoelectric element 2211 has a through hole through which light passes, that is, the piezoelectric element 2211 is a ring-shaped piezoelectric element.
  • the friction driving part 2212 further includes a plurality of circular friction heads 22121 distributed at equal intervals, and the plurality of friction heads 22121 are elastic.
  • One end of the plurality of friction heads 22121 is driveably fixed to the bottom surface of the piezoelectric element 2211, and the bottom surface of the other end of the plurality of friction heads 22121 has a higher coefficient of friction to provide greater friction force.
  • the upper cover 211 provides the preload of the driving mechanism 22 , and the driving mechanism 22 passes through the plurality of friction heads 22121 of the friction driving part 2212 and the top surface of the transmission mechanism 23 frictional contact, so that the driving mechanism 22 drives the transmission mechanism 23 to rotate.
  • the size of the pre-pressure can be adjusted by adjusting the distance between the upper cover 211 and the base 212 .
  • the piezoelectric element 2211 is made of piezoelectric material, and the two-phase electrical signal with a phase difference of 90° in the corresponding area of the piezoelectric component 221 is applied through the driving circuit board 223, and the reverse voltage Electric effect, the piezoelectric component 221 generates traveling wave motion, drives the transmission mechanism 23 to rotate, and the transmission mechanism 23 drives the three or more blade elements 241 to rotate, changing the aperture size of the blade through hole 252, through The clockwise/counterclockwise rotation of the transmission mechanism 23 is achieved by adjusting the phase difference of the two-phase electrical signals.
  • the piezoelectric element 2211 of the piezoelectric component 221 vibrates due to the inverse piezoelectric effect due to access to external signals, and the multiple friction heads 22121 fixed on the bottom surface of the piezoelectric element 2211 generate elliptical motions, and then frictionally drive the The transmission mechanism 23 rotates.
  • the piezoelectric element 2211 is a ring-shaped piezoelectric element, wherein the ring-shaped piezoelectric element can output a frictional force that drives the transmission mechanism 23 to rotate when it is electrically conducted. .
  • the external signal provided to the piezoelectric element 2211 is a traveling wave signal
  • the piezoelectric component 221 drives the transmission mechanism 23 to rotate by utilizing the circumferential propagation of the traveling wave.
  • the traveling wave signal causes the multiple friction heads 22121 of the piezoelectric assembly 221 to move along the elliptical trajectory on the surface particles that are in contact with the transmission mechanism 23 .
  • the frictional force of the contact pushes the transmission mechanism 23 to rotate.
  • the transmission mechanism 23 includes a friction member 2311 with a through hole in the center, and the friction member 2311 is fixed on the top surface of the transmission main body 231 by bonding or integral molding.
  • the transmission mechanism 23 is in contact with the friction drive part 2212 of the drive mechanism 22 through the friction member 2311 on its top surface, and the friction member 2311 can increase the friction coefficient of the top surface of the transmission mechanism 23 to provide the transmission mechanism 23
  • the top surface is a flat surface, which makes the working state of the driving mechanism 22 stable.
  • the friction member 2311 is fixedly connected to the transmission body 231, and the friction member 2311 is in contact with the driving mechanism 22, wherein the friction member 2311
  • the one-sided width of the transmission body 231 is larger than the one-sided width of the transmission body 231 in the lateral direction, which is conducive to increasing the contact area between the transmission mechanism 23 and the drive mechanism 22, thereby facilitating the drive mechanism 22 to pass through the friction member 2311
  • the frictional force for driving the transmission mechanism 23 is provided.
  • the friction member 2311 extends inwardly from the top of the transmission body 231 and covers the shaft holes 24123 of the three or more blade elements 241, and the friction member 2311 holds each of the The blade elements 241 move smoothly during the rotation, which is beneficial to reduce the risk of the three or more blade elements 241 falling off. It can be understood that, in this preferred embodiment of the present application, the friction member 2311 has a friction surface and a connection surface, wherein the connection surface of the friction member 2311 is connected to the transmission of the transmission mechanism 23 The main body 231 is fixedly connected.
  • the friction surface of the friction member 2311 faces the driving mechanism 22, and the friction head 22121 of the piezoelectric assembly of the driving mechanism 22 is in contact with the friction surface of the friction member 2311, wherein the The friction surface of the friction member 2311 is rough to increase the friction force between the transmission mechanism 23 and the driving mechanism 22 .
  • the variable aperture device 20 further includes a supporting component 2125 disposed on the top surface of the base 212 and the bottom surface of the transmission mechanism 23 . As shown in FIG. 4 , the supporting assembly 2125 and the driving mechanism 22 clamp the transmission mechanism 23 .
  • the transmission mechanism 23 is supported above the supporting assembly 2125 of the base 212 , and the transmission mechanism 23 is sandwiched between the supporting assembly 2125 of the base 212 and the driving mechanism 22 .
  • the transmission mechanism 23 is in contact with the driving mechanism 22 , and the driving mechanism 22 and the transmission mechanism 23 have a preset pressure, so that the driving mechanism 22 drives the transmission mechanism 23 to rotate in a friction transmission manner.
  • the upper cover 211 is covered above the driving mechanism 22, and the pressure between the transmission mechanism 23 and the driving mechanism 22 is adjusted through the upper cover 211 to ensure that the When the driving mechanism 22 moves, the driving mechanism 22 can provide sufficient force to drive the transmission mechanism 22 to move.
  • the supporting component 2125 is fixed on the top surface of the base body 2121 of the base 212 .
  • the support assembly 2125 includes a plurality of sliders 21251 integrally formed on the top surface of the base body 2121, the plurality of sliders 21251 provide a plane for the transmission mechanism 23 and The transmission mechanism 23 is supported.
  • the plurality of sliders 21251 may be eight hemispherical sliders 21251 equally spaced and annularly distributed around the second protrusion.
  • the position corresponding to the plurality of sliders 21251 on the bottom surface of the transmission mechanism 23 is inwardly recessed to form a circular track, and the circular track on the bottom surface of the transmission mechanism 23 and the With the cooperation of the plurality of sliders 21251, the transmission mechanism 23 is less prone to translation during rotation.
  • the pressure required by the driving mechanism 22 and the transmission mechanism 23 is provided through the fixing between the upper cover 211 and the base 212, so as to maintain the relationship between the driving mechanism 22 and the transmission mechanism 23. maintain frictional contact between them, and by changing the distance between the upper cover 211 and the base 212, the magnitude of the pre-pressure provided to the driving mechanism 22 and the transmission mechanism 23 can be adjusted.
  • it is necessary to change the pre-pressure by adjusting the distance between the upper cover 211 and the base 212 . Therefore, there is an air gap between the plurality of limiting posts 2128 and the upper cover 211 , thereby preventing the adjustment of the distance between the upper cover 211 and the base 212 from being affected.
  • the base 212 further includes four fixing protrusions 2126 extending upward from the four corners of the top surface of the base main body 2121 and four fixing protrusions 2126 recessed upward from the four corners of the bottom surface of the base main body 2121.
  • There are four fixing recesses 2127 and the four fixing recesses 2127 are formed on the base body 2121 and the four fixing protrusions 2126 .
  • variable aperture device 20 further includes a position sensing device (not shown in the figure), and the position sensing device is used to sense the rotation degree of the transmission mechanism 23, Thus, the size of the aperture of the blade through hole 252 is controlled.
  • Figures 1 to 8 show that the present application uses a piezoelectric assembly 221 that outputs rotary motion as the drive mechanism 22 to drive the transmission mechanism 23 to rotate;
  • the piezoelectric component 221A includes a piezoelectric element 2211A and a friction driving part 2212A fixed on the bottom surface of the piezoelectric element 2211A.
  • At least one piezoelectric element 2211A is made of piezoelectric material.
  • the piezoelectric element 2211A is strained to generate deformation, and the piezoelectric element 2211A is resonated by using a high-frequency AC voltage, so that the piezoelectric component 221A drives the transmission mechanism 23 to move through the piezoelectric element 2211A.
  • the piezoelectric element 2211A of the piezoelectric assembly 221A is implemented as a linear piezoelectric element, which can be driven by the transmission mechanism 23 under the condition of electrical conduction. The force of linear motion.
  • the piezoelectric element 2211A of the piezoelectric component 221A has a bar-shaped structure.
  • the friction driving part 2212A includes a friction head 22121A, and the piezoelectric assembly 221A is in frictional contact with the transmission mechanism 23 through at least one friction head 22121A on the friction driving part 2212A,
  • the friction head 22121A has elasticity.
  • the friction driving part 2212A is driveably connected to the piezoelectric element 2211A, so that after the piezoelectric element 2211A is turned on, the friction driving part 2212 deforms with the deformation of the piezoelectric element 2211A, thereby driving At least one friction head 22121A produces unidirectional yaw reciprocating motion along a preset direction, and the friction driving part 2212A provides a driving force for driving the transmission mechanism 23 under the action of the piezoelectric element 2211A.
  • the number of the friction heads 22121A is multiple, such as four, so that the piezoelectric assembly 221A can stably output a linear driving force.
  • the linear wave signal is provided, and the piezoelectric element 2211A is deformed under the inverse piezoelectric effect, driving the friction driving part 2212A to move in a traveling wave manner, and the piezoelectric element
  • the deformation of 2211A is transmitted to the friction driving part 2212A, and the traveling wave motion of the friction driving part 2212A provides the driving force for driving the transmission mechanism 23 to move.
  • the piezoelectric element 2211A is conducted with a standing wave signal, and the deformation of the piezoelectric element 2211A drives the friction driving part 2212A to move along a preset direction in a standing wave manner, This is not intended to limit the application.
  • the piezoelectric assembly 221A is arranged between the upper cover 211 and the transmission mechanism 23, the upper cover 211 provides the pre-pressure of the piezoelectric assembly 221A, and the piezoelectric assembly 221A is in frictional contact with the top surface of the transmission mechanism 23 through at least one friction head 22121 of the friction driving part 2212 , so that the piezoelectric component 221A drives the transmission mechanism 23 to move.
  • the driving mechanism 22 includes a piezoelectric assembly 221A, and the piezoelectric assembly 221A is arranged on the edge of the top surface of the transmission mechanism 23 and rubs against the top surface of the transmission mechanism 23 touch.
  • the driving mechanism 22 includes a plurality of piezoelectric assemblies 221A, and the plurality of piezoelectric assemblies 221A are arranged at equal intervals on the edge of the top surface of the transmission mechanism 23 and connected to the The top surface of the transmission mechanism 23 is in frictional contact, and the driving directions of the plurality of piezoelectric assemblies 221A are clockwise or counterclockwise.
  • the two piezoelectric assemblies 221A are respectively arranged on opposite sides of the top surface of the transmission mechanism 23, and when the two piezoelectric assemblies After the two piezoelectric components are turned on, the driving directions of the two piezoelectric components are opposite, so as to realize the rotation of the transmission mechanism 23 .
  • the transmission mechanism 23 includes a friction member 2311 with a through hole in the center, and the friction member 2311 is fixed on the top surface of the transmission main body 231 by bonding or integral molding.
  • the transmission mechanism 23 is in contact with the friction drive part 2212 of the linear drive assembly through the friction member 2311 on its top surface, and the friction member 2311 can effectively increase the friction coefficient of the top surface of the transmission mechanism 23, providing the transmission mechanism
  • the top surface of 23 is a flat surface, which makes the working state of the piezoelectric component 221A stable.
  • the variable aperture device 20 further includes a support assembly 2125 disposed on the top surface of the base 212 and the bottom surface of the transmission mechanism 23 , the support assembly 2125 and the piezoelectric assembly 221A clamp the transmission mechanism 23 .
  • the support assembly 2125 includes sliders 21251 integrally formed on the top surface of the base body 2121 , and the plurality of sliders 21251 provide a plane for the transmission mechanism 23 and support the transmission mechanism 23 .
  • the sliders 21251 may be eight hemispherical sliders 21251 equally spaced and distributed around the second protrusion in a ring.
  • the slider 21251 may be implemented as a ball, wherein the slider 21251 is rotatably disposed on the base body 2121 .
  • the support assembly 2125 includes a ring-shaped extension leg extending downward from the transmission body 231 , and the transmission mechanism 23 is supported by the ring-shaped extension leg of the transmission mechanism 23 on the base 212 .
  • variable aperture device 20 further includes a rotational guide assembly.
  • the rotation guide assembly is a plurality of limiting columns 2128 extending from the base body 2121 to the direction of the blade assembly 24, and the plurality of limiting columns 2128 are located at the limiting
  • the outer side of the protrusion 21232 is fixed to the base body 2121 by integral molding or bonding.
  • the plurality of limit posts 2128 are in contact with the circular outer wall of the transmission mechanism 23, thereby restricting the translation or inclination of the transmission mechanism 23, so that the variable aperture carrier is driven by the piezoelectric assembly 221A. Rotate down.
  • the number of the limiting posts 2128 is three, and the three limiting posts 2128 are equally spaced on the outer side wall of the transmission mechanism 23 and are in contact with the circular outer side wall of the transmission mechanism 23 , the shape of the three limiting columns 2128 is a cylinder.
  • the rotating guide assembly is an inwardly recessed annular track formed on the bottom surface of the transmission mechanism 23 and opposite to the plurality of sliders 21251 , and the annular track of the transmission mechanism 23 The track coincides with the center of the light hole of the base 212 .
  • the rotation guide assembly is an inwardly recessed annular track formed on the top surface of the base body 2121 and opposite to the annular extension leg of the transmission mechanism 23 , the base
  • the ring track of the main body 2121 is disposed outside the second protrusion 2123 , and the ring track of the base body 2121 coincides with the center of the light hole of the base 212 .
  • the annular extension leg is arranged in the annular track of the base body 2121, and the translation or inclination of the transmission mechanism 23 is restricted by the cooperation of the annular track of the base body 2121 and the annular extension leg, so that the The variable aperture carrier rotates under the drive of the piezoelectric component 221A.
  • the camera module includes a photosensitive component 30 , a lens component 10 held on a photosensitive path of the photosensitive component 30 , and an iris device 20 .
  • the lens assembly 10 includes an optical lens 11 and a lens driving assembly 12 for driving the optical lens 11 to move.
  • the optical lens 11 is an integral lens, which includes a lens barrel 111 and at least a lens group 112 accommodated in the lens barrel 111 , and the lens group 112 includes optical lenses.
  • the lens driving assembly 12 includes a lens driving movable part, a lens driving fixed part, and an A lens driving element, the lens driving element drives the movable part of the lens to move relative to the fixed part of the lens.
  • the optical lens 11 is fixed to the lens movable part of the lens driving assembly 12 and is driven by the lens driving assembly 12 to move along the direction of the optical axis or move perpendicular to the direction of the optical axis, thereby realizing the automatic operation of the camera module. Focus function or optical image stabilization function.
  • the optical lens 11 is a split lens, which includes multiple lens parts.
  • the split lens includes a first lens part and a second lens part arranged along the optical axis, the second lens part includes a second lens barrel and at least one second lens installed in the second lens barrel A lens, the first lens component includes a first lens, and in some embodiments, the first lens component further includes a first lens barrel, and the first lens is accommodated in the first lens barrel.
  • the photosensitive component 30 includes a chip circuit board 31 , a photosensitive chip 32 mounted on the chip circuit board 31 , an electronic component 33 , a connector 36 , a base 34 and a filter element 35 .
  • the chip circuit board 31 includes a circuit board main body 311, a connecting strip 312 and a connector part 313, and the connecting strip 312 connects the circuit board main body 311 and the connector part 313 and realizes the circuit board main body 311 and the The electrical conduction between the connector parts 313 is provided.
  • the photosensitive chip 32 and the electronic component 33 are electrically connected to the circuit board main body 311 , and the connector 36 is mounted on the connector portion 313 .
  • the photosensitive chip 32 is used for receiving the external light collected by the lens assembly 10 to form an image and is electrically connected to the portable device through the chip circuit board 31 .
  • the photosensitive chip 32 includes a photosensitive area and a non-photosensitive area, and the photosensitive chip 32 is electrically connected to the chip circuit board 31 through the photosensitive chip 32 pad located in the non-photosensitive area, for example, the photosensitive chip 32 is bonded by a wire (gold wire), welding, FC process (flip chip) or RDL (redistribution layer technology) and other methods to electrically connect to the circuit board main body 311 of the chip circuit board 31 .
  • the photosensitive chip 32 is fixed on the front of the circuit board main body 311 by an adhesive medium (the surface of the chip circuit board 31 facing the lens assembly 10 is defined as the front, and the opposite side of the chip circuit board 31 to the front is the bottom surface of the chip circuit board 31 ).
  • an adhesive medium the surface of the chip circuit board 31 facing the lens assembly 10 is defined as the front, and the opposite side of the chip circuit board 31 to the front is the bottom surface of the chip circuit board 31 ).
  • the base 34 is disposed on the circuit board main body 311 of the chip circuit board 31 for supporting other components.
  • the base 34 is implemented as a separately molded plastic bracket, which is attached to the surface of the circuit board main body 311 through an adhesive medium, and is used to support other components.
  • the base 34 can also be formed on the circuit board main body 311 in other ways, for example, the base 34 is implemented as a molded base, which is integrally formed on the circuit board body
  • the preset position of the circuit board main body 311 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 mounted on the base 34 and corresponds to at least the photosensitive area of the photosensitive chip 32 . It is worth mentioning that, in other examples of the present application, the filter element 35 may be indirectly installed on the base 34 through other support members.
  • the filter element 35 can also be installed in other positions of the camera module, for example, the filter element 35 is formed in the optical lens 11 (for example, As a layer of filter film attached to the surface of a certain optical lens of the optical lens 11), this is not limited by the present application.
  • the photosensitive assembly 30 also includes a chip drive assembly (not shown in the drawings), which can drive the photosensitive chip 32 of the photosensitive assembly 30 to translate, rotate or tilt, and then Realize the chip anti-shake function of the camera module.
  • a chip drive assembly (not shown in the drawings), which can drive the photosensitive chip 32 of the photosensitive assembly 30 to translate, rotate or tilt, and then Realize the chip anti-shake function of the camera module.
  • the variable aperture device 20 is installed on the top surface or the middle of the optical lens 11 .
  • the variable aperture device 20 is installed on the top surface of the optical lens 11 , and the variable aperture device 20 is fixed to the optical lens 11 .
  • the base 212 of the variable aperture device 20 is bonded to the lens barrel 111 of the optical lens 11 through an adhesive medium, and at least a part of the optical lens 11 extends into the casing of the variable aperture device 20 through the Inside the hole 251.
  • the driving circuit board 223 of the variable aperture device 20 is electrically connected to the lens driving assembly 12.
  • the driving circuit board 223 of the variable aperture device is connected to the lens driving assembly 12 Reset the electric connection of the shrapnel of the transmission mechanism 23 .
  • the variable aperture device 20 may be disposed in the middle of the optical lens 11 .
  • the second lens part is installed and fixed on the lens driving assembly 12
  • the first lens part is installed and fixed on the top surface of the variable aperture device 20
  • the variable aperture device 20 is further installed and fixed on The lens barrel 111 of the optical lens 11 , and then the first lens part and the second lens part are arranged along the optical axis of the optical lens 11 .
  • variable aperture device 100a By adjusting the size of the iris aperture of the variable aperture device 100a to control the amount of incoming light of the camera module, the camera module has different depths of field, and can realize remote shooting or portrait shooting.
  • the present application discloses a variable aperture device 100a, including a housing 10a, a drive assembly 20a, a blade assembly 30a, and a transmission mechanism 40a, wherein the transmission mechanism 40a is movably connected to the drive assembly.
  • 20a is connected to the blade assembly 30a, that is, the transmission mechanism 40a can be driven by the driving assembly 20a, and drives the blade assembly 30a to move.
  • the casing 10a is installed on other structures of the camera module, wherein the driving assembly 20a, the blade assembly 30a and the transmission mechanism 40a are accommodated in the casing 10a.
  • the driving assembly 20a is adjacent to the transmission mechanism 40a and is arranged on the peripheral side of the transmission mechanism 40a.
  • the driving assembly 20a can drive the transmission mechanism 40a so that the transmission mechanism 40a is relatively
  • the body 10a rotates.
  • the blade assembly 30a and the transmission mechanism 40a are engaged with each other, and the blade assembly 30a is driven by the transmission mechanism 40a to realize rotational movement, thereby changing the size of the aperture of the variable aperture device 100a.
  • the blade assembly 30a is connected to the transmission mechanism 40a, wherein the blade assembly 30a can be driven by the transmission mechanism 40a, and forms a light aperture 301a with a variable aperture diameter. It can be understood that, in this preferred embodiment of the present application, the size of the light through hole 301a of the blade assembly 30a determines the aperture of the iris device.
  • the blade assembly 30a includes a plurality of blade elements 31a, wherein each blade element 31a includes a blade body 311a and a blade hub 312a, wherein the blade body 311a is connected to the vane bushing 312a, and the vane bushing 312a of each vane element 31a is driveably connected to the transmission mechanism 40a.
  • the number of the blade elements 31a is eight, and the number of the blade main bodies 311a and the blade sleeves 312a is also eight.
  • the plurality of blade bodies 311a are distributed in a ring shape, and there is an overlap between adjacent blade bodies 311a, so that a plurality of blade bodies 311a are formed between the plurality of blade bodies 311a for light The light through hole 301a passing through.
  • one of the plurality of blade bodies 311a is located above or below the previous blade body 311a (in the counterclockwise direction).
  • one blade body 311a among the plurality of blade bodies 311a is located above the previous blade body 311a and below the subsequent blade body 311a.
  • one of the multiple blade bodies 311a is located below the previous blade body 311a and above the subsequent blade body 311a.
  • one blade body 311a of the multiple blade bodies 311a is located below the previous blade body 311a and the subsequent blade body 311a.
  • one blade body 311a of the plurality of blade bodies 311a is located above the previous blade body 311a and the subsequent blade body 311a. That is to say, a plurality of the blade main bodies 311a may be arranged overlappingly along the same direction, or may be arranged alternately high and low along the same direction.
  • a plurality of the blade bodies 311a overlap each other to form an approximately circular aperture, that is, when the plurality of blade bodies 311a are closed, the gap between two adjacent blades is avoided.
  • a polygonal opening is formed between inner sidewalls of the main body 311a, thereby preventing stray light from entering the variable aperture device 100a from the polygonal opening.
  • the number of the blade main bodies 311a is an odd number, which can avoid the above-mentioned polygonal opening, and can also use a small number of the blade main bodies 311a to form a larger aperture.
  • the number of the vane main bodies 311a is an even number, and the vane main bodies 311a are arranged symmetrically along the center of the diaphragm aperture, so as to avoid the above-mentioned multi-deformation openings.
  • the housing 10a includes a cover 11a and a base 12a, wherein the base 12a and the cover 11a can be engaged with each other to form a A housing cavity, the housing cavity is used to accommodate the drive assembly 20a, the blade assembly 30a, and the transmission mechanism 40a, in this way, not only can protect each element in the variable aperture device 100a, but also can It is used to prevent dust, dirt, etc. from entering the inside of the iris device 100a.
  • the cover body 11a is sleeved above the base 12a, the cover body 11a is located on the light incident side, and the base 12a is located on the light exit side. Further, an opening is provided in the middle of the cover 11a, and correspondingly, an opening is also provided in the middle of the base 12a, and the two openings of the cover 11a and the base 12a have the same size and correspond up and down.
  • the opening of the cover 11a and the opening of the base 12a form a housing through hole of the housing 10a, so that light reflected by an object can pass through the housing through hole.
  • the openings of the cover 11a and the base 12a are circular, and the present application does not limit the shape of the openings of the cover 11a and the base 12a.
  • the base 12a is a quadrilateral, which includes a first side, a second side, a third side and a fourth side in a clockwise direction. The side is located on the first side, the second side is located on the second side, the third side is located on the third side, the fourth side is located on the fourth side, the first side and the third side are parallel to each other, and the second side and the fourth side are parallel to each other.
  • the base 12a further includes a base main body 121a.
  • the opening of the base 12a is located on the base main body 121a.
  • the base 12a further includes a first protrusion 122a, a second protrusion 123a and an annular groove 124a, and the first protrusion 122a, the second protrusion 123a and the annular groove 124a respectively surround the opening of the base 12a, that is, the cross-sections of the first protrusion 122a, the second protrusion 123a and the annular groove 124a are annular, and the annular groove 124a is disposed on the Between the first protrusion 122a and the second protrusion 123a, wherein, the opening of the base 12a, the first protrusion 122a, the second protrusion 123a and the annular groove 124a The centers of the circles coincide.
  • the base 12a is equivalent to a fixed part 23a
  • the driving assembly 20a, the blade assembly 30a and the transmission mechanism 40a are arranged on the base 12a, and through the base 12a supports each element in the variable aperture device 100a.
  • the second protrusion 123a of the base 12a includes a limiting protrusion 1231a and a plurality of axial protrusions 1232a, and the limiting protrusion 1231a and the axial protrusions 1232a
  • the second protrusion 123a extends upward, the top surface of the limiting protrusion 1231a is higher than the top surface of the second protrusion 123a, and the top surface of the shaft protrusion 1232a is higher than the second protrusion 123a top surface.
  • the number of the limiting protrusion 1231a is at least one, and the number of the shaft protrusions 1232a is the same as the number of the blade elements 31a, which is multiple.
  • the number of the limiting protrusion 1231a is different from that of the shaft protrusion 1232a and the number of the limiting protrusion 1231a is less than the number of the shaft protrusion 1232a, and the number of the limiting protrusion 1231a is set between the two shaft protrusions 1232a.
  • the number of the limiting protrusions 1231a and the shaft protrusions 1232a is the same, and the limiting protrusions 1231a and the shaft protrusions 1232a are along the circumferential direction of the second protrusion 123a Alternate the settings one by one.
  • the limiting protrusion 1231a and the shaft protrusion 1232a integrally extend upward from the second protrusion 123a.
  • the limiting protrusion 1231a and the shaft protrusion 1232a may also be molded on the second protrusion 123a by secondary injection molding.
  • the limiting protrusion 1231a and the shaft protrusion 1232a may also be fixed on the top surface of the second protrusion 123a by sticking or welding.
  • the blade bushing 312a includes a bushing main body 3121a, a driven tooth 3122a and a bushing connecting end 3123a, and the bushing connecting end 3123a is arranged at one end of the bushing main body 3121a , the driven teeth 3122a are disposed at the other end of the sleeve main body 3121a.
  • the blade bushing 312a is fixedly connected to the blade main body 311a through the bushing connecting end 3123a.
  • the sleeve connection end 3123a of the blade sleeve 312a is fixed to the blade main body 311a by glue.
  • the blade bushing 312a is integrally formed with the blade main body 311a. Further, the blade bushing 312a may be disposed on the bottom surface of the blade main body 311a. It can be understood that the blade bushing 312a may also be disposed on the top surface of the blade main body 311a, which is not limited in the present application.
  • the sleeve body 3121a is provided with a positioning hole, the positioning hole extends from the top of the sleeve body 3121a to the bottom surface of the sleeve body 3121a, and the positioning hole is connected to the base 12a.
  • the shaft protrusion 1232a is movably connected so that the sleeve body 3121a is positioned on the shaft protrusion 1232a of the base 12a and rotates around the shaft protrusion 1232a.
  • the driven teeth 3122a include at least two driven teeth 31221a, and the driven tooth slots 31220a are formed between the two driven gear teeth 31221a, and the number of the driven tooth slots 31220a
  • the number of the driven gear teeth 31221a is four, and the number of the driven tooth slots 31220a is three.
  • the blade body 311a is fixedly connected to the blade hub 312a, and the rotation of the blade hub 312a controls the opening and closing of the blade body 311a, and adjusts the light transmission. Aperture size of hole 301a.
  • the blade bushing 312a is driven by the transmission mechanism 40a to rotate in one direction (clockwise), and the blade main body 311a is opened as the blade bushing 312a moves, so The diameter of the light through hole 301a becomes larger.
  • the blade bushing 312a rotates in the opposite direction (counterclockwise) driven by the transmission mechanism 40a, and the blade main body 311a is closed as the blade bushing 312a moves, so The diameter of the light through hole 301a becomes smaller. It can be understood that the blade bushing 312a can control the continuous movement of the blade main body 311a, so as to realize the continuous change of the diameter of the light through hole 301a.
  • the transmission mechanism 40a includes a transmission main body 41a, a plurality of driving teeth 42a and at least one limit baffle set 43a.
  • a section of the transmission body 41a is circular, that is, the outer edge of the movable carrier is circular, the inner edge of the movable carrier is circular, and each of the driving teeth 42a And the limiting baffle set 43a extends inward from the inner edge of the transmission body 41a, that is, the driving teeth 42a and the limiting baffle set 43a are disposed in the through holes.
  • inward refers to the side facing the axis O of the transmission body 41a
  • outward refers to the side away from the axis O of the transmission body 41a
  • the axis O of the transmission body 41a passes through the transmission body 41a
  • the center of is perpendicular to the plane where the transmission main body 41a is located.
  • the vane element 31a of the vane assembly 30a meshes with the driving teeth 42a of the transmission mechanism 40a, and the number of the driving teeth 42a is the same as that of the vane element 31a , that is, the transmission mechanism 40a includes a plurality of the driving teeth 42a.
  • the number of the driving teeth 42a is eight.
  • each of the driving teeth 42a includes at least one driving gear tooth 421a, the driving gear tooth 421a extends inwardly from the inner edge of the transmission main body 41a, and at least one driving gear tooth 421a surrounds the The inner edge of the transmission main body 41a is set.
  • the driving gear teeth 421a are arranged along the radial direction of the transmission main body 41a.
  • the driving gear teeth 421a are integrally formed with the transmission main body 41a.
  • the driving gear teeth 421a are adhesively fixed to the transmission main body 41a, which is not limited in the present application.
  • the driving gear teeth 421a and at least two driven gear teeth 31221a are engaged with each other, so as to transmit the rotation of the transmission mechanism 40a to the blade assembly 30a, thereby driving The rotation of the vane sleeve 312a realizes the opening and closing of the vane main body 311a.
  • the number of the driven gear teeth 31221a is N
  • the number of the driving gear teeth 421a is M
  • the relationship between the two is: M ⁇ N-1.
  • the number of the driven gear teeth 31221a is four
  • the number of the driving gear teeth 421a is greater than or equal to three.
  • the limiting baffle set 43a includes a first limiting baffle 431a and a second limiting baffle 432a, and the first limiting baffle 431a and the second limiting baffle
  • the limit baffle 432a extends inwardly from the inner edge of the transmission main body 41a, and the first limit baffle 431a and the second limit baffle 432a are arranged along the radial direction of the transmission main body 41a.
  • the number of the limiting baffle group 43a is at least one, the first limiting baffle 431a and the second limiting baffle 432a form the limiting groove 433a, and the limiting groove 433a
  • the opening is towards the axis O.
  • the limiting protrusion 1231a of the base 12a is placed in the limiting groove 433a from bottom to top, and when the transmission mechanism 40a is relative to the base 12a of the drive housing, When rotating and moving, the first limiting baffle 431a and the second limiting baffle 432a will collide with the limiting protrusion 1231a of the base 12a to adjust the rotation angle of the transmission mechanism 40a. Limit.
  • the length of the first limiting baffle 431a and the second limiting baffle 432a in the radial direction is greater than or equal to the length of the limiting protrusion 1231a in the radial direction, so as to avoid the first
  • the limiting baffle 431a and the second limiting baffle 432a can break out of the limitation of the limiting protrusion 1231a.
  • looking at the surface along one side of the axis O the first limit baffle 431a and the second limit baffle 432a form an angle ⁇ with the axis O, and in a specific example of the present application, the angle ⁇ is 3°.
  • the rotatable angle of the transmission mechanism 40a is 3°, and when the transmission mechanism 40a rotates 3°, the first limiting baffle 431a or the second limiting baffle 432a will be aligned with the The limiting protrusion 1231a of the base 12a collides to prevent further rotation of the transmission mechanism 40a.
  • the driving teeth 42a are arranged adjacent to the limiting baffle group 43a, further, the limiting baffle group 43a is arranged between the two driving teeth 42a . Further, the number of the limiting baffle groups 43a is less than or equal to the number of the driving teeth 42a.
  • the number of the limit baffle set 43a is smaller than the number of the drive teeth 42a, and the limit baffle set 43a is arranged between the two drive teeth 42a to control the The rotation of the transmission mechanism 40a is limited; in another specific example of the present application, the number of the limit baffle set 43a is equal to the number of the drive teeth 42a, and the limit baffle set 43a and the drive tooth
  • the teeth 42a are arranged alternately along the circumference of the carrier body of the transmission mechanism 40a. This arrangement makes the driving teeth 42a also be arranged in the limiting slots 433a of the limiting baffle set 43a.
  • the set of limit baffles 43a includes a first set of limit baffles 43a and a second set of limit baffles 43a, and one of the base 12a
  • the limiting protrusion 1231a is arranged in the first group of limiting baffles 43a, and the other limiting protrusion 1231a of the base 12a is arranged in the second group of limiting baffles 43a.
  • the driving tooth 42a is placed between one of the limiting protrusions 1231a and the other limiting protrusion 1231a, that is, the driving tooth 42a is arranged in the first group of the limiting baffles
  • the first limit baffle 431a or the second limit baffle 432a of 43a and the first limit baffle 431a or the second limit baffle 431a of the second set of limit baffles 43a Between the baffles 432a.
  • the corresponding radian angle of the driving tooth 42a is greater than the corresponding radian angle of the limiting slot 433a.
  • the vane assembly 30a is disposed inside the transmission mechanism 40a, and the vane assembly 30a is movably placed through the engagement between the driving gear teeth 421a and the driven teeth 3122a. on the inner side of the transmission mechanism 40a.
  • the rotatable angle of the transmission mechanism 40a is 3°
  • the rotatable angle of the blade assembly 30a driven by the transmission mechanism 40a is 16.5°.
  • the height of the blade assembly 30a does not exceed the height of the transmission mechanism 40a, so as to prevent the blades of the blade assembly 30a from contacting the drive housing during the rotation of the variable aperture device 100a. body friction. Furthermore, increasing the height of the variable aperture device 100a can also be avoided, so as to meet the demand for miniaturization of the camera module.
  • the limiting protrusion 1231a extends upwards and is disposed inside the limiting baffle group 43a of the transmission mechanism 40a, when the transmission mechanism 40a is relatively When the base 12a rotates, the limiting protrusion 1231a contacts with the first limiting baffle 431a or the second limiting baffle 432a of the limiting baffle set 43a, so that the transmission mechanism 40a The movement is limited. Further, the limiting protrusions 1231a are arranged along the circumferential direction of the second protruding portion 123a, and are located on the same circumference. The shaft protrusion 1232a extends upwards and is disposed in the positioning hole of the blade shaft sleeve 312a.
  • the blade shaft sleeve 312a rotates around the shaft protrusion 1232a.
  • the shaft protrusions 1232a are arranged along the circumference of the second protrusion 123a and are located on the same circumference.
  • the shaft protrusion 1232a is located inside the limiting protrusion 1231a, that is, the shaft protrusion 1232a is disposed on a side closer to the axis O, so as to be disposed on the side with the blade assembly 30a.
  • the inner side of the above-mentioned transmission mechanism 40a is adapted.
  • the height of the shaft protrusion 1232a is not higher than the height of the limiting protrusion 1231a, that is, the upper surface of the shaft protrusion 1232a is lower than the upper surface of the limiting protrusion 1231a, or, the The upper surface of the shaft protrusion 1232a is flush with the upper surface of the limiting protrusion 1231a, so as to prevent the height of the variable aperture device 100a from increasing.
  • the position-limiting protrusion 1231a is a square structure, and the shaft protrusion 1232a is a cylinder.
  • the position-limiting protrusion 1231a and the shaft protrusion 1232a can also be in other shapes. There is no restriction on this.
  • the blade bushing 312a of the blade assembly 30a is positioned on the top surface of the second protrusion 123a through the positioning of the shaft protrusion 1232a, and the blade assembly 30a
  • the blade main body 311a is placed on the top surface of the first convex portion 122a, and the blade sleeve 312a is driven by the transmission mechanism 40a to rotate around the axis O to realize the opening and closing of the blade main body 311a.
  • the blade sleeve 312a is in frictional contact with the top surface of the second protrusion 123a
  • the blade main body 311a is in frictional contact with the top surface of the first protrusion 122a.
  • the annular groove 124a is disposed between the first protrusion 122a and the second protrusion 123a, and the setting of the annular groove 124a reduces the first The areas of the top surfaces of the convex portion 122a and the second convex portion 123a further reduce the frictional force between the blade element 31a and the first convex portion 122a and the second convex portion 123a. Furthermore, dust-catching glue is provided in the annular groove 124a, so that impurities such as dust and particles in the variable aperture device 100a fall onto the dust-catching glue, preventing dust, particles and other impurities from entering the camera module.
  • the base 12a further includes a track 125a, the track 125a is arranged outside the second protrusion 123a of the base body 121a, and the track 125a surrounds the The opening of the base 12a, the track 125a coincides with the center of the opening of the base 12a.
  • the outer wall of the transmission mechanism 40a extends downward integrally from the transmission main body 41a to form an annular extension leg 45a, and the extension leg 45a of the transmission mechanism 40a is arranged on the bottom of the base 12a. Inside the track 125a, so that the transmission mechanism 40a can only rotate in the track 125a, thereby limiting the translation or tilt of the transmission mechanism 40a.
  • the above-mentioned functions may also be realized through other structural pairs.
  • the top surface of the base 12a extends upwards along the circumference of the maximum outer diameter of the transmission mechanism 40a with a plurality of limit posts 126a, and the limit posts 126a are integrated It is fixed to the base body 121a by molding or bonding.
  • the outer wall of the transmission mechanism 40a is in contact with the limit column 126a, thereby limiting the translation or inclination of the transmission mechanism 40a.
  • the transmission mechanism 40a and the blade assembly 30a are arranged above the base 12a, that is, the transmission mechanism 40a and the blade assembly 30a are connected through the base 12a. support.
  • the drive assembly 20a drives the transmission mechanism 40a to rotate relative to the base 12a around the axis O
  • the blade assembly 30a is arranged inside the transmission mechanism 40a, and passes through the driven teeth 3122a and the drive
  • the meshing of the gear teeth 421a further drives the blade bushing 312a to rotate, and drives the blade main body 311a to open and close, so as to change the aperture of the aperture.
  • the transmission mechanism 40a is a driving element
  • the blade assembly 30a is a driven element
  • the driving assembly 20a drives the active element to rotate, and then drives the driven element to rotate.
  • the drive assembly 20a includes a drive member 21a and a return member 22a, wherein one end of the drive member 21a and the return member 22a is fixed to the housing body 10a, and the other end of the drive member 21a and the return member 22a is driveably connected to the transmission mechanism 40a, and the transmission mechanism 40a is driven to reciprocate by the drive member 21a and the return member 22a .
  • the driving member 21a and the restoring member 22a provide driving force opposite to each other for the transmission mechanism 40a.
  • the drive member 21a is connected to the transmission mechanism 40a, and the drive member 21a drives the transmission mechanism 40a to rotate clockwise (counterclockwise);
  • the return member 22a is connected with the transmission mechanism 40a, and the transmission mechanism 40a is driven by the return member 22a to rotate counterclockwise (clockwise), so that the transmission mechanism 40a is connected between the drive member and the return member 22a. It rotates reciprocally under the driving action.
  • the drive assembly 20a further includes at least one movable part 24a, wherein the at least one movable part 24a is connected to the transmission mechanism 40a, and the at least one movable part 24a is arranged on the outside of the transmission member 40a, by which The movable part 24a drives the transmission mechanism 40a to move.
  • the movable part 24a of the drive assembly 20a is rotatably connected to the drive member 21a and the return member 22a, and the drive member 21a and the return member 22a drive the drive member 21a and the return member 22a through the movable part 24a.
  • the transmission mechanism 40a moves. It is worth mentioning that, in this preferred embodiment of the present application, the movable part 24a is arranged outside the transmission mechanism 40a and connected with the transmission mechanism 40a.
  • the number of the movable parts 24a can be one, two or more.
  • the number of the movable part 24a is one, wherein the driving member 21a and the restoring member 22a of the driving assembly 20a are connected to the movable part 24a, Moreover, the driving member 21a and the restoring member 22a are located on opposite sides of the movable part 24a, and the driving member 21a and the restoring member 22a provide driving forces opposite to each other on the movable part 24a.
  • the number of the movable parts 24a is two, that is, the driving assembly 20a includes two movable parts 24a.
  • the two moving parts 24a are arranged on the outside of the transmission mechanism 40a at intervals from each other.
  • the two movable parts 24a are symmetrically distributed on both sides of the transmission mechanism 40a, wherein the driving member 21a is connected to one of the movable parts 24a, and the restoring member 22a is connected to the other.
  • the movable part 24a described above is connected.
  • the driving member 21a and the restoring member 22a are fixed on two opposite sides of the housing 10a.
  • the driving member 21a and the restoring member 22a provide opposite driving forces for the transmission mechanism 40a on opposite sides of the housing 10a, so as to drive the transmission mechanism 40a to rotate reciprocally. .
  • the number of the movable parts 24a is merely an example, not a limitation.
  • the drive assembly 20a is connected to the transmission mechanism 40a in a driving manner, and the transmission mechanism 40a is driven to reciprocate by the drive assembly 20a, so that the transmission mechanism 40a drives the connected blade assembly 30a to move.
  • the fixing part 23a includes a first fixing part 231a and a second fixing part 232a, and the first fixing part 231a and the second fixing part 232a of the fixing part 23a are fixed to the base 12a.
  • the driving member 21a is telescopically arranged between the first fixed part 231a and the movable part 24a, and the restoring member 22a is telescopically arranged between the second fixed part 232a and the movable part. Between 24a.
  • the movable part 24a is jointly acted by the driving member 21a and the restoring member 22a, and is in a state of force balance.
  • the driving member 21a and the restoring member 22a are in a stretched state of mutual traction, wherein the movable part 24a 22a keeps balance under mutual traction. Therefore, when the driving member 21a pulls the moving part 24a to move, the restoring member 22a is stretched by the moving part 24a to generate a force opposite to the driving member 21a.
  • the driving member 21a further includes a driving member trailing end 212a and a driving member fixed end 213a, wherein the driving member trailing end 212a of the driving member 21a is connected to the movable part 24a, and the driving member fixed end 213a is fixed on the first fixing portion 231a.
  • the recovery member 22a further includes a recovery member pulling end 222a and a recovery member fixed end 223a, wherein the recovery member pulling end 222a of the recovery member 22a is connected to the movable part 24a, and the recovery member fixed end 223a is fixed on the second fixing portion 232a.
  • the driving member trailing end 212a of the driving member 21a and the restoring member trailing end 222a of the restoring member 22a are located on opposite sides of the movable part 24a, at In a balanced state, mutually balanced forces are exerted on the movable part 24a by the driving member trailing end 212a of the driving member 21a and the restoring member trailing end 222a of the restoring member 22a.
  • the driving member trailing end 212a of the driving member 21a and the restoring member trailing end 222a of the restoring member 22a are arranged opposite to each other on the movable part 24a opposite sides of the drive member 21a to exert opposite and mutually balanced forces on the movable part 24a through the driving member trailing end 212a of the driving member 21a and the restoring member trailing end 222a of the restoring member 22a.
  • the opposite sides of the movable part 24a may be two opposite side faces of the movable part, or two symmetrically distributed end faces, etc. of the movable part.
  • the transmission mechanism 40a further includes a moving end 44a, the moving end 44a extends outward from the outer edge of the transmission body 41a, and the moving end 44a can be integrally formed on the transmission body 41a, or Bonded to the transmission main body 41a.
  • the moving end 44a of the transmission mechanism 40a is fixedly connected to the movable part 24a of the driving assembly 20a, so as to drive the transmission mechanism 40a to rotate and move through the movable part 24a.
  • both the driving assembly 20a and the transmission mechanism 40a are disposed on the base 12a of the housing 10a, wherein the driving assembly 20a is fixed to the base 12a through the fixing portion 23a, so The transmission mechanism 40a is movably coupled to the base 12a.
  • the transmission mechanism 40a is connected to the movable part 24a of the driving assembly 20a, and the transmission mechanism 40a can rotate relative to the base 12a driven by the movable part 24a.
  • the driving member 21a can drive the movable part 24a to drive the transmission mechanism 40a to rotate relative to the base 12a.
  • the driving member 21a may be a driving motor of a voice coil motor, a piezoelectric motor, a SMA (Shape Memory Alloy) motor or the like.
  • Shape memory alloy is an alloy material that can completely eliminate its deformation at a lower temperature after heating up and restore its original shape before deformation. For example, when the shape memory alloy undergoes a limited plastic deformation at a temperature lower than the phase transformation state, it can be restored to its original shape before deformation by heating. Among them, it can be realized by energizing the SMA wire SMA wire heating.
  • the driving member 21a is an SMA wire, and the heat generated when electrified increases the temperature of the SMA wire, thereby causing the SMA wire to shrink.
  • the driving member 21a is a straight SMA wire.
  • the driving member 21a is a helical SMA wire, and the helical SMA wire can increase its total length and increase its shrinkage when heated.
  • the driving member 21a is an SMA wire with at least one curved section, which can increase the total length of the SMA wire and also increase the movable stroke of the SMA wire.
  • the restoring member 22a can drive the movable part 24a and then drive the transmission mechanism 40a to return to its original position after the driving stops.
  • the recovery member 22a has certain elasticity.
  • the restoring member 22a is an elastic member such as a spring or a shrapnel.
  • the restoring member 22a is an SMA wire, and its structure may be the same as that of the driving member 21a, or may be different from that of the driving member 21a.
  • the driving member 21a and the moving part 24a of the returning member 22a are connected to the transmission mechanism 40a, wherein the moving part 24a, at least a part of the driving member 21a, and the moving part 24a of the returning member 22a At least a part is located on the same straight line. That is to say, in the present application, the movable part 24a, at least a part of the driving member 21a and at least a part of the restoring member 22a are arranged on the same side of the base 12a, and the driving member 21a At least a part, at least a part of the restoring member 22a extends along the direction of the side of the base 12a.
  • the straight line where at least a part of the driving member 21a is located coincides with the straight line where at least a part of the restoring member 22a is located, and the movable part 24a is disposed between the driving member 21a and the restoring member 22a, The three are on the same straight line.
  • the first fixing part 231a, the second fixing part 232a and the movable part 24a are disposed on the same side of the base 12a.
  • the first fixing part 231a is arranged at a corner of the base 12a, and the second fixing part 232a is arranged at an adjacent corner of the base 12a; or the first fixing part 231a is arranged at a corner of the base 12a;
  • the two fixing portions 232a are disposed on the same side of the base 12a.
  • the first fixing part 231a is arranged at one side of the base 12a, and the second fixing part 232a is arranged at the same side, or the second fixing part 232a set at the corner of the side.
  • the movable part 24a is disposed between the first fixed part 231a and the second fixed part 232a, one end of the movable part 24a is connected to the driving member trailing end 212a of the driving member 21a, the The other end of the movable part 24a is connected to the pulling end 222a of the restoring member 22a, the fixed end 213a of the driving member 21a is connected to the first fixing portion 231a, and the restoring member 22a The fixing end 223a of the restoring member is connected to the second fixing portion 232a.
  • the driving member 21a is disposed opposite to the restoring member 22a along two opposite sides of the movable part 24a.
  • the fixed part 23a and the movable part 24a are clamping pieces, which are respectively clamped and connected with the driving member 21a and the restoring member 22a.
  • the fixed part 23a and the movable part 24a are fixed protrusions, respectively wound and connected with the driving member 21a and the restoring member 22a, which is not limited in the present application.
  • the drive member 21a and the return member 22a are arranged on the same side along the same direction, that is, the straight line along the length direction of the drive member 21a and the return member 22a is aligned with the The outer diameter of the transmission mechanism 40a is tangential.
  • the driving member 21a is an SMA wire
  • the restoring member 22a is a spring
  • the driving member fixed end 213a of the driving member 21a is connected to the first fixed part 231a
  • the SMA wire is fixed on the base 12a through the first fixed part 231a
  • the driving member trailing end 212a of the driving member 21a is connected to the movable part 24a
  • the restoring member 22a The fixing end 223a of the restoring member is connected to the second fixing portion 232a
  • the restoring member 22a is fixed to the base 12a through the second fixing portion 232a
  • the restoring member of the restoring member 22a pulls End 222a is connected to said movable part 24a.
  • the SMA wire After electrification, the SMA wire is heated and shrinks, and the SMA wire provides a positive torque to the transmission mechanism 40a to drive the transmission mechanism 40a to rotate.
  • the SMA wire generates a force along a straight line to drive the moving part 24a to move, because the sleeve connection end 3123a of the transmission mechanism 40a connected to the moving part 24a is limited by the track 125a to only Rotating around the axis O, the movable part 24a generates a rotating motion driven by a force along the linear direction, and then drives the transmission mechanism 40a to rotate.
  • the spring After the SMA wire shrinks, the spring is stretched, the length of the line segment of the SMA wire decreases, and the length of the spring line segment elongates. angle.
  • the spring When the energization is stopped or the energizing current is reduced, the spring provides a reverse torque opposite to the forward torque to the transmission mechanism 40a, so as to drive the transmission mechanism 40a to reversely rotate to return to the initial position.
  • the intersection of the line connecting the end point of the movable part 24a and the center of the transmission mechanism 40a with the outer wall of the transmission mechanism 40a by the SMA line is A; after electrification, the SMA line Shrink by heat, drive the transmission mechanism 40a to rotate, the intersection of the line connecting the end point of the movable part 24a and the center of the transmission mechanism 40a with the SMA line and the outer wall of the transmission mechanism 40a is B; A, B and The angle formed by the line connecting the centers of the circles is the rotation angle ⁇ of the transmission mechanism 40a.
  • the driving member 21a is a first SMA wire 211a
  • the restoring member 22a is a second SMA wire 221a
  • the first SMA wire 211a One end is connected to the first fixing portion 231a, and the first SMA wire 211a is fixed to the base 12a through the first fixing portion 231a.
  • the other end of the first SMA wire 211a is connected to the movable part 24a, and one end of the second SMA wire 221a is connected to the second fixed part 232a, and the second fixed part 232a makes the first Two SMA wires 221a are fixed on the base 12a, and the other end of the second SMA wire 221a is connected to the movable part 24a.
  • the straight lines along the length direction of the first SMA wire 211a and the second SMA wire 221a coincide with each other.
  • the first SMA wire 211a is heated and shrunk, and the first SMA wire 211a provides a positive torque to the transmission mechanism 40a to drive the transmission mechanism 40a to rotate.
  • the first SMA wire 211a generates a force along a straight line to drive the moving part 24a to move, because the sleeve connecting end 3123a of the transmission mechanism 40a connected to the moving part 24a is moved by the track 125a is limited to rotational movement about axis O only. Therefore, the movable part 24a generates a rotational movement driven by the force along the linear direction, and then drives the transmission mechanism 40a to rotate.
  • the first SMA wire 211a shrinks, the second SMA wire 221a is stretched, the segment length of the first SMA wire 211a is reduced, and the segment length of the second SMA wire 221a is extended.
  • the straight line along the length direction of the first SMA wire 211a does not coincide with the straight line along the length direction of the second SMA wire 221a, and forms a certain angle. Stop energizing the first SMA wire 211a or reduce the current energizing the first SMA wire 211a, then energize the second SMA wire 221a, the second SMA wire 221a shrinks when heated, and the second SMA wire 211a The wire 221a provides a reverse torque opposite to the forward torque to the transmission mechanism 40a, so as to drive the transmission mechanism 40a to reversely rotate to return to the initial position.
  • M>sin ⁇ *L wherein M is the contraction amount of the driving member 21a, ⁇ is the rotation angle of the transmission mechanism 40a, and L is the axis O to the driving The distance of the straight line where the member 21a is located along the length direction.
  • M is the contraction amount of the driving member 21a
  • is the rotation angle of the transmission mechanism 40a
  • L is the axis O to the driving
  • M is the contraction amount of the driving member 21a
  • is the rotation angle of the transmission mechanism 40a
  • L is the axis O to the driving The distance of the straight line where the member 21a is located along the length direction.
  • the rotation angle ⁇ of the transmission mechanism 40a is 3°
  • the distance L from the axis O to the straight line along the length direction of the driving member 21a is 5.4mm
  • the contraction amount M of the driving member 21a is greater than 0.3mm
  • the driving member 21a is an SMA wire
  • the restoring member 22a is a spring
  • the shrinkage M of the driving member 21a is greater than 0.28mm
  • the total length of the driving member 21a is 5.6mm -9.3mm.
  • the contraction amount M of the driving member 21a is the moving stroke of the driving member 21a along the direction of its straight line.
  • the driving member 21a is an SMA wire with a bent structure, wherein the driving member 21a includes at least one bending section 214a and from the bending section 214a integrally extending at least two straight sections 215a, wherein the driving member fixed end 213a and the driving member trailing end 212a of the driving member 21a are located on the straight section 214a of the driving member.
  • the curved section 214a is connected between at least two straight sections 215a, the curved section 214a of the driving member 21a is located at a corner of the base 12a, and at least two of the straight lines of the driving member 21a
  • the segments 215a respectively extend along the directions where the two sides of the base 12a are perpendicular to each other.
  • at least one winding post 127a is provided at a corner of the base 12a, and the number of the winding posts 127a is the same as the number of the bending sections 214a of the driving member 21a, the The curved section 214a of the driving member 21a is in contact with the winding post 127a. It can be understood that, in this preferred embodiment of the present application, the driving member 21a is inserted and wound around the winding post 127a, and forms the bending section 214a at a position in contact with the winding post 127a .
  • the movable part 24a, at least a part of the driving member 21a and at least a part of the restoring member 22a are disposed on the same side of the base 12a, and the first fixing portion 231a is disposed on the side of the base 12a.
  • the adjacent side or the opposite side, the second fixed part 232a is arranged on the same side or the adjacent side of the side of the base 12a, and the movable part 24a is arranged on the first fixed part 231a and the first fixed part 231a. Between the two fixing parts 232a. This arrangement can increase the overall length of the driving member 21a, so as to increase the movable stroke of the driving member 21a.
  • the driving member 21a is arranged on the side of the transmission mechanism 40a, it can also be said that the driving member 21a is arranged on the edge of the base 12a, and at least A part of the straight line along the length direction is parallel to one side of the base 12a. Further, the driving member 21a is close to the side of the base 12a to provide enough space for the placement of the transmission mechanism 40a. Since the drive member 21a and the transmission mechanism 40a are disposed along the horizontal direction, the center of the transmission mechanism 40a is not consistent with the center of the variable aperture device 100a.
  • the driving member 21a and the restoring member 22a are arranged on opposite sides of the base 12a, and the driving member 21a and the restoring member 22a Extend along the circumference of the transmission mechanism 40a.
  • the drive member 21a and the return member 22a are in an arc structure, the arc where the drive member 21a is located is opposite to the arc where the return member 22a is located, and the fixing portion 23a and the movable part 24a are both disposed between the driving member 21a and the restoring member 22a.
  • the driving member trailing end 212a of the driving member 21a is connected to the movable part 24a
  • the driving member fixed end 213a of the driving member 21a is connected to the first fixing portion 231a
  • the restoring The pulling end 222a of the recovery member 22a is connected to the movable part 24a
  • the fixed end 223a of the recovery member 22a is connected to the second fixed part 232a
  • the movable part 24a is arranged on the Between the first fixing part 231a and the second fixing part 232a.
  • the first fixed part 231a and the second fixed part 232a are located on the same side of the base 12a, and the movable part 24a is located on the base 12a to be connected to the first fixed part 232a. part 231a and the side opposite to the side where the second fixing part 232a is located.
  • the first fixing portion 231a and the second fixing portion 232a may also be disposed on different sides of the base 12a.
  • the first fixed part 231a and the second fixed part 232a are arranged on opposite sides of the base 12a, and the movable part 24a is arranged on the base 12a and the first fixed part 231a, the The side adjacent to the side where the second fixing portion 232a is located.
  • the fixed part 23a and the movable part 24a are clamping pieces, which are respectively clamped and connected with the driving member 21a and the restoring member 22a.
  • the fixed part 23a and the movable part 24a are fixed protrusions, respectively wound and connected with the driving member 21a and the restoring member 22a, which is not limited in the present application.
  • the driving member 21a is an SMA wire and the restoring member 22a is a spring
  • one end of the SMA wire is connected to the first fixing part 231a, and passes through the first fixing part 231a.
  • the part 231a makes the SMA wire fixed on the base 12a, the other end of the SMA wire is connected to the movable part 24a, and one end of the spring is connected to the second fixing part 232a, and the spring is fixed by the second fixing part 232a.
  • the other end of the spring is connected to the movable part 24a.
  • the SMA wire connects one end of the first fixed part 231a to the straight line where the spring connects one end of the second fixed part 232a, and the end of the SMA wire connected to the movable part 24a is connected to the spring.
  • the straight lines connecting one end of the movable part 24a are parallel to each other; after electrification, the SMA wire is heated and shrinks, and the SMA wire provides a positive torque to the transmission mechanism 40a to drive the transmission mechanism 40a to rotate.
  • the SMA wire has an arc-shaped structure, and the SMA will generate an arc-shaped contraction track after being energized, and then drive the movable part 24a to rotate, and then drive the transmission mechanism 40a to rotate.
  • the spring after the SMA wire shrinks, the spring is stretched, the arc length of the SMA wire is reduced, and the arc length of the spring is elongated; after the energization is stopped or the energization current is reduced, the spring provides a connection with the transmission mechanism 40a.
  • the positive torque is opposite to the reverse torque, so as to drive the transmission mechanism 40a to reversely rotate to return to the initial position.
  • the driving member 21a is a first SMA wire 211a
  • the restoring member 22a is a second SMA wire 221a
  • one end of the first SMA wire 211a is connected to the first SMA wire 211a.
  • a fixing part 231a, and the first SMA wire 211a is fixed to the base 12a through the first fixing part 231a, the other end of the first SMA wire 211a is connected to the movable part 24a, and the first SMA wire 211a is connected to the movable part 24a.
  • One end of the two SMA wires 221a is connected to the second fixing part 232a, and the second SMA wire 221a is fixed to the base 12a through the second fixing part 232a, and the other end of the second SMA wire 221a is Connected to the movable part 24a.
  • the straight line where one end of the first SMA wire 211a connects to the first fixing portion 231a and the second SMA wire 221a connects to the second fixing portion 232a is located, and the The straight line where the end of the first SMA wire 211a is connected to the movable part 24a and the line where the second SMA wire 221a is connected to the end of the movable part 24a is parallel to each other.
  • the first SMA wire 211a After electrification, the first SMA wire 211a is heated and shrunk, and the first SMA wire 211a provides a positive torque to the transmission mechanism 40a to drive the transmission mechanism 40a to rotate.
  • the first SMA wire 211a has an arc-shaped structure, and the first SMA will generate an arc-shaped contraction track after being energized, and then drive the movable part 24a to rotate, and then drive the transmission mechanism 40a to rotate.
  • the second SMA wire 221a is stretched, the arc length of the first SMA wire 211a shrinks, and the arc length of the second SMA wire 221a elongation.
  • the contraction amount of the driving member 21a is the movable stroke of the driving member 21a along the arc direction where the driving member 21a is located.
  • the driving member 21a and the restoring member 22a are helical SMA wires, and the driving member 21a and the returning member 22a are symmetrically arranged on the transmission Both sides of mechanism 40a.
  • the driving assembly 20a further includes a first guiding mechanism 25a and a second guiding mechanism 26a, and the driving member 21a and the restoring member 22a are placed in the first guiding mechanism.
  • the first guiding mechanism 25a and the second guiding mechanism 26a guide the expansion and contraction of the driving member 21a and the restoring member 22a through the first guiding mechanism 25a and the second guiding mechanism 26a.
  • the shapes of the first guiding mechanism 25a and the second guiding mechanism 26a are adapted to the shapes of the driving member 21a and the restoring member 22a.
  • the driving member 21a and the restoring member 22a are elongated, and the first guiding mechanism 25a and the second guiding mechanism 26a are correspondingly elongated.
  • the driving member 21a and the restoring member 22a are arc-shaped, and the first guiding mechanism 25a and the second guiding mechanism 26a are correspondingly arc-shaped.
  • first guiding mechanism 25a has a first guiding surface 250a
  • second guiding mechanism 26a has a second guiding surface 260a, wherein the first guiding mechanism 25a
  • the first guiding surface 250a and the second guiding surface 260a of the second guiding mechanism 26a have the same elongated or arc-shaped structure as the driving member 21a and the restoring member 22a.
  • the first guiding mechanism 25a and the second guiding mechanism 26a present a semi-circular tubular structure with openings at both ends, wherein the driving member 21a is built in Inside the first guide mechanism 25a, the restoring member 22a is built inside the second guide mechanism 26a.
  • the first guiding mechanism 25a and the second guiding mechanism 26a are semi-circular structures with an inner ring surface, wherein the first guiding mechanism 25a
  • the first guide surface 250a of the second guide mechanism 26a and the second guide surface 260a of the second guide mechanism 26a face the opposite side of the transmission mechanism 40a.
  • the driving member 21a is placed in the first guiding mechanism 25a, the restoring member 22a is placed in the second guiding mechanism 26a, and the extending direction of the first guiding mechanism 25a is in line with that of the driving member.
  • 21a have the same extension direction
  • the extension direction of the second guide mechanism 26a is the same as the extension direction of the restoration member 22a
  • the arc-shaped driving member 21a and the restoration member 22a are in the process of shrinking and stretching
  • Other movement directions will be generated in the middle, for example: move along the direction of the center of the arc.
  • the setting of the first guide mechanism 25a and the second guide mechanism 26a can control the shrinkage of the driving member 21a and the return member 22a between the first guide mechanism 25a and the second guide mechanism 25a.
  • the driving member 21a and the restoring member 22a can move along an arc track.
  • the driving member 21a is arranged in an arc-shaped structure, which can increase the total length of the SMA wire, increase the heat shrinkage of the SMA wire, and further increase the movable stroke.
  • the arrangement of the first guiding mechanism 25a and the second guiding mechanism 26a can also protect the driving member 21a and the restoring member 22a.
  • the first guiding mechanism 25a and the second guiding mechanism 26a are made of ceramic material, and the ceramic material has a certain heat insulation effect to avoid rapid loss of heat generated by SMA energization.
  • the first guiding mechanism 25a is placed inside the driving member 21a
  • the second guiding mechanism 26a is placed inside the restoring member 22a
  • the driving member 21a is supported and guided by the first guide mechanism 25a
  • the return mechanism 22a is supported and guided by the second guide mechanism 26a.
  • the driving member 21a and the restoring member 22a are in a helical semi-circular structure, wherein the first guiding mechanism 25a and the second guiding mechanism 26a have The same semi-circular support structure as the restoring member 22a.
  • variable aperture device 100a further includes a cover plate 50a, and the cover plate 50a is disposed between the cover body 11a and the transmission mechanism 40a.
  • the cover plate 50a is fixedly arranged on the top surface of the transmission mechanism 40a, such that the blade assembly 30a disposed in the transmission mechanism 40a is clamped It is arranged between the cover plate 50a and the base 12a, and this arrangement can prevent the blade assembly 30a from breaking away from the shaft protrusion 1232a during the rotation process, and thus from its original position.
  • the surface of the transmission mechanism 40a may be uneven during the manufacturing process, and the cover plate 50a rotates with the rotation of the transmission mechanism 40a, reducing the distance between the cover plate 50a and the cover. Friction between bodies 11a.
  • the cover plate 50a may also be only sandwiched between the cover body 11a and the transmission mechanism 40a, which is not limited in the present application.
  • variable aperture device 100a further includes the electrical connection element 60a, wherein the electrical connection element 60a is arranged on the housing, and the electrical connection Element 60a is electrically connected to said drive assembly 20a.
  • the electrical connection element 60a includes at least two connection terminals 61a installed on the base 12a.
  • the fixing portion 23a is electrically connected to the driving member 21a and the restoring member 22a.
  • at least two of the connection terminals 61a are integrally formed with the base 12a through an insert injection molding process.
  • connection terminal 61a includes a lower end and an upper end integrally extended from the lower end, wherein the connection terminal 61a is fixed to the fixing portion 23a of the base 12a by insert injection molding, and the connection terminal The lower end of 61a is partially exposed for electrical connection with other conductive elements of the camera module.
  • the top surface of the upper end of the connecting terminal 61a is exposed, the fixing part 23a is arranged on the top surface of the upper end of the connecting terminal 61a, and is connected with the driving member 21a and the restoring member 22a through the fixing part 23a electrical connection.
  • the fixed part 23a and the movable part 24a are made of metal, and the driving member 21a and the restoring member 22a can be realized through the fixed part 23a and the movable part 24a.
  • the circuit is turned on.
  • a camera module As shown in FIG. 25 , a camera module according to an embodiment of the present application is illustrated, which includes a photosensitive component 300a, a lens component 200a held on the photosensitive path of the photosensitive component 300a, and an iris device 100a.
  • the lens assembly 200a includes an optical lens 210a and a lens driving assembly 220a that drives the optical lens 210a to move.
  • the optical lens 210a is an integrated lens, which includes a lens barrel 2110a and at least one lens group 2120a accommodated in the lens barrel 2110a, and the at least one lens group 2120a includes at least one optical lens.
  • the lens driving assembly 220a includes a lens driving movable part, a lens driving fixed part, and a lens driving element arranged between the lens driving movable part and the lens driving fixed part, and the lens driving element The movable part of the lens is driven to move relative to the fixed part of the lens.
  • the optical lens 210a is fixed to the lens movable part of the lens driving assembly 220a and is driven by the lens driving assembly 220a to move along the direction of the optical axis or move perpendicular to the direction of the optical axis, thereby realizing the automatic operation of the camera module. Focus function or optical image stabilization function.
  • the optical lens 210a is a split lens, which includes a plurality of lens parts, specifically, the split lens includes a first lens part and a second lens part arranged along the optical axis , the second lens part includes a second lens barrel and at least one second lens installed in the second lens barrel, the first lens part includes at least one first lens, in some embodiments, the first A lens component further includes a first lens barrel, and the at least one first lens is accommodated in the first lens barrel.
  • the photosensitive component 300a includes a chip circuit board 310a, a photosensitive chip 320a mounted on the chip circuit board 310a, an electronic component 330a, a connector 340a, a base 350a, and a filter element 360a.
  • the chip circuit board 310a includes a circuit board main body, a connection strip and a connector 340a part, and the connection strip connects the circuit board main body and the connector 340a part and realizes the circuit board main body and the connector part electrical conduction between.
  • the photosensitive chip 320a and the electronic component 330a are electrically connected to the main body of the circuit board.
  • the photosensitive chip 320a is used for receiving the external light collected by the lens assembly 200a for imaging and electrically connecting with the portable device through the chip circuit board 310a.
  • the photosensitive chip 320a includes a photosensitive area and a non-photosensitive area, and the photosensitive chip 320a is electrically connected to the chip circuit board 310a through a pad of the photosensitive chip 320a located in the non-photosensitive area, for example, the photosensitive chip 320a is bonded by a wire (gold wire), soldering, FC process (flip chip) or RDL (redistribution layer technology) and other methods to electrically connect to the circuit board main body of the chip circuit board 310a.
  • wire gold wire
  • FC process flip chip
  • RDL redistribution layer technology
  • the photosensitive chip 320a is adapted to be fixed on the front of the main body of the circuit board through an adhesive medium (the surface of the chip circuit board 310a facing the lens assembly 200a is defined as the front, and the opposite side of the chip circuit board 310a to the front is the side of the chip circuit board 310a. bottom).
  • an adhesive medium the surface of the chip circuit board 310a facing the lens assembly 200a is defined as the front, and the opposite side of the chip circuit board 310a to the front is the side of the chip circuit board 310a. bottom.
  • there is a groove or a through hole (circuit board through hole) in the middle of the main body of the circuit board and the photosensitive chip 320a is installed and fixed in the groove of the main body of the circuit board or the through hole of the circuit board , thereby reducing the influence of the thickness of the main body of the circuit board on the thickness of the photosensitive component 300a, and reducing the height of the camera module.
  • the base 350a is disposed on the circuit board main body of the chip circuit board 310a for supporting other components.
  • the base 350a is implemented as a separately molded plastic bracket, which is attached to the surface of the main body of the circuit board through an adhesive medium and used to support other components.
  • the base 350a can also be formed on the main body of the circuit board in other ways, for example, the base 350a is implemented as a molded base 350a, which is integrally formed on the circuit board through a molding process.
  • the preset position of the main body of the circuit board is not limited by this application.
  • the filter element 360a is held on the photosensitive path of the photosensitive chip 320a for filtering the imaging light entering the photosensitive chip 320a.
  • the filter element 360a is mounted on the base 350a and corresponds to at least the photosensitive area of the photosensitive chip 320a. It is worth mentioning that, in other examples of the present application, the filter element 360a may be indirectly installed on the base 350a through other support members.
  • the filter element 360a can also be installed in other positions of the camera module, for example, the filter element 360a is formed in the optical lens 210a (for example, As a layer of filter film attached to the surface of a certain optical lens of the optical lens 210a), this is not limited by the present application.
  • the photosensitive component 300a further includes a chip drive component (not shown in the drawings), and the chip drive component is suitable for driving the photosensitive chip 320a of the photosensitive component 300a to translate, rotate or tilt, Then realize the anti-shake function of the chip of the camera module.
  • the variable aperture device 100a is installed on the top surface or the middle of the optical lens 210a. In one embodiment of the present application, the variable aperture device 100a is installed on the top surface of the optical lens 210a, and the variable aperture device 100a is fixed to the optical lens 210a. Specifically, the base 12a of the variable aperture device 100a is bonded to the lens barrel 2110a of the optical lens 210a through an adhesive medium, and at least a part of the optical lens 210a extends into the shell of the variable aperture device 100a in the body through hole.
  • the aperture drive circuit board of the variable aperture device 100a is electrically connected to the lens drive assembly 220a. In one embodiment of the application, the drive circuit board of the variable aperture device is connected to the lens drive assembly 220a for Resetting the electrical connection of the shrapnel of the transmission mechanism 40a.
  • the variable aperture device 100a may be disposed in the middle of the optical lens 210a.
  • the second lens part is installed and fixed on the lens driving assembly 220a
  • the first lens part is installed and fixed on the top surface of the variable aperture device 100a
  • the variable aperture device 100a is further installed and fixed on The lens barrel 2110a of the optical lens 210a, and then the first lens part and the second lens part are arranged along the optical axis of the optical lens 210a.

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Abstract

本发明提供的是可变光圈装置和摄像模组。可变光圈装置至少包括驱动机构(22)、传动机构(23)及叶片组件(24),传动机构(23)与叶片组件(24)相传动地连接,驱动机构(22)驱动传动机构(23)以带动叶片组件(24)形成一孔径可变的叶片通孔(252)。或者可变光圈装置至少包括驱动组件(20a)、传动机构(40a)及叶片组件(30a);驱动组件(20a)包括驱动构件(21a)、回复构件(22a)、固定部(23a)及活动部件(24a),由驱动构件(21a)和回复构件(22a)通过活动部件(24a)驱动传动机构(40a)往复地转动;或者驱动组件(20a)包括驱动构件(21a)、回复构件(22a)、第一导引机构(25a)及第二导引机构(26a),驱动构件(21a)被第一导引机构(25a)支撑可伸缩地运动,回复构件(22a)被第二导引机构(26a)支撑可伸缩地运动,通过驱动构件(21a)和回复构件(22a)驱动传动机构(40a)往复地转动。摄像模组包括可变光圈装置。

Description

可变光圈装置和带有可变光圈装置的摄像模组
相关申请的交叉引用
本申请要求于2021年11月25日向中国国家知识产权局提交的第202111413300.9号、于2021年11月30日向中国国家知识产权局提交的202111448201.4和202111443132.8号中国专利申请的优先权和权益,该申请的全部内容通过引用并入本文。
技术领域
本发明涉及光学成像技术领域,尤其涉及一可变光圈装置和带有可变光圈装置的摄像模组。
背景技术
近几年,安装在例如智能手机、平板电脑等便携式设备上的摄像模块的体积越来越小,使得摄像头的光圈指数增加。然而,在许多传统摄像模块中,光圈指数是唯一确定且不能通用更改的。因此,需要一种小而薄的能够改变便携式设备的摄像头的光圈指数的可变光圈设备。
光圈是光学成像技术中非常重要的技术参数,比如在摄像机、电子设备用摄像模组等。可变光圈是摄像模组的一个重要部件,可变光圈具有光圈孔径,通过调节光圈孔径的面积可以调节摄像模组的进光量,使得摄像模组具有不同的亮度及景深,光圈孔径的面积较大时,摄像模组的具有更大的进光量,使得形成的图像亮度高且背景虚化效果好,光圈孔径的面积较小时,摄像模组有更小的进光量,使得形成的图像中,细节很清楚。
作为摄像模组的重要构成部件,光圈装置的特性能够影响摄像模组的功能,例如智能手机、平板电脑等便携式设备尺寸小、厚度薄,其内用于设置摄像模组的空间也很小,因此通常设置有结构简单的固定光圈装置,但是固定光圈装置的光圈大小是固定的,不能较好的适应不同的拍摄场景。
随着市场的发展,利用固定光圈装置拍摄成像的便携式设备不能满足用户的需求,因此,需要一种能够改变便携式设备的摄像模组的光圈大小的可变光圈装置以满足摄像模组在不同拍摄场景的拍摄需求,而要满足该需求,则期望一种可以调节光圈大小的可变光圈装置。但是,现有技术中可变光圈的体积普遍较大,此外需要驱动机构驱动光圈移动,使得具有可变光圈功能的镜头体积较大,不利于摄像模组的小型化设计。
发明内容
按照本申请的第一种设计方案,提出一种可变光圈装置和摄像模组。
本申请的一个主要优势在于提供一可变光圈装置和摄像模组,其中所述可变光圈装置具有可调的光圈孔径,即可通过改变其光圈孔径的大小调整摄像模组的光圈数值,进而实现不同光圈数值的拍摄。
本申请的另一个优势在于提供一可变光圈装置和摄像模组,其中所述可变光圈装置包括壳体、被设置于所述壳体的叶片组件、传动机构以及驱动机构,其中所述叶片组件被可传动地连接于所述传动机构,所述传动机构被夹设于所述壳体和所述驱动机构之间,并由所述驱动机构驱动所述传动机构的转动,进而调整所述光圈孔径的大小。
本申请的另一个优势在于提供一可变光圈装置和摄像模组,其中所述驱动机构为压电马达,压电马达的推力大、尺寸小,适于实现所述传动机构大角度的旋转,并且压电马达的自锁功能还能够使叶片通孔的孔径大小在不通电的状态下被保持。
本申请的另一个优势在于提供一可变光圈装置和摄像模组,其中所述传动机构与所述驱动机构相接触,所述驱动机构通过摩擦传动的方式驱动所述传动机构转动,简化了所述可变光圈装置的传动连接,有利于所述可变光圈装置的小型化。
本申请的另一个优势在于提供一可变光圈装置和摄像模组,其中所述壳体包括上盖和与之对应的一基底,其中所述上盖和所述基底形成一结构缝隙,所述叶片组件可伸出所述结构缝隙,并形成可逐渐缩小的叶片光圈,其中所述结构缝隙朝向所述壳体的内侧,有利于减少灰尘和外界杂质进入到所述壳体内部,避免对所述可变光圈装置的影响,提高了所述可变光圈装置的适用性。
本申请的另一个优势在于提供一可变光圈装置和摄像模组,其中所述传动机构被夹设于所述驱动机构和所述基底之间,并可通过所述上盖与所述基底调整所述传动机构和所述驱动机构之间的压力,其结构简单并且稳定性高。
本申请的另一个优势在于提供一可变光圈装置和摄像模组,其中所述可变光圈装置的结构简单,不需要昂贵的设备和复杂的机械结构。因此,本申请提供了一种经济可靠的技术方案。
依本申请的一个方面,能够实现前述目的和其他目的和优势的本申请的可变光圈装置,包括:
壳体,所述壳体包括基底;
驱动机构,所述驱动机构被设置于所述壳体;
传动机构,所述传动机构被夹设于所述驱动机构和所述基底之间,所述传动机构与所述驱动机构相传动地连接;以及
叶片组件,所述叶片组件被可旋转地设置于所述基底,并与所述传动机构相传动地连接,其中所述驱动机构驱动所述传动机构,并由所述传动机构带动所述叶片组件,以形成一孔径可变的叶片通孔。
根据本申请的一个实施例,所述驱动机构包括压电组件和电连接于所述压电组件的一驱动线路板,其中所述压电组件与所述传动机构相接触,并由所述驱动机构的所述压电组件以摩擦力驱动所述传动机构沿特定方向运动。
根据本申请的一个实施例,所述压电组件包括压电元件以及固定于所述压电元件的底面的一摩擦驱动部,所述驱动机构通过所述摩擦驱动部与所述传动机构的顶面摩擦接触,其中所述压电元件为环形压电元件。
根据本申请的一个实施例,所述压电组件包括压电元件以及固定于所述压电元件的底面的一摩擦驱动部,所述驱动机构通过所述摩擦驱动部与所述传动机构的顶面摩擦接触,其中所述压电元件为直线压电元件。
根据本申请的一个实施例,所述传动机构包括传动主体和摩擦构件,其中所述摩擦构件与所述传动主体相固定连接,并且所述摩擦构件与所述驱动机构相接触。
根据本申请的一个实施例,所述摩擦构件覆盖所述传动主体,所述摩擦构件的单侧宽度大于所述传动主体在横向方向的单侧宽度,并且所述摩擦构件自所述传动主体的上方向内延伸至所述叶片组件。
根据本申请的一个实施例,所述传动机构进一步包括三或以上驱动齿,其中所述驱动齿被一体地形成于所述传动主体的内侧,其中所述叶片组件与所述传动机构的所述三或以上驱动齿相啮合连接。
根据本申请的一个实施例,所述叶片组件包括三或以上叶片元件,所述三或以上叶片元件沿同一方向合围,并形成所述叶片通孔。
根据本申请的一个实施例,各叶片元件包括叶片主体和与所述叶片主体相连且支撑所述叶片主体转动的轴套,其中所述轴套被可轴转地设置于所述基底,并且与所述传动机构相连接,由所述传动机构驱动各所述叶片元件轴向地转动,以调整所述叶片通孔的孔径大小。
根据本申请的一个实施例,所述轴套包括轴套主体和一体成型于所述轴套主体的从动齿,其中各所述叶片元件的所述从动齿与所述传动机构的所述驱动齿相啮合连接。
根据本申请的一个实施例,所述壳体进一步包括上盖,所述上盖与所述基底对位设 置,其中所述驱动机构、所述传动机构以及所述叶片组件被保持在所述上盖和所述基底形成的一容置空间,并通过所述上盖和所述基底调整所述驱动机构和所述传动机构之间的压力。
根据本申请的一个实施例,所述壳体进一步设有壳体通孔和一结构缝隙,所述壳体的所述结构缝隙连通所述壳体的所述壳体通孔和所述壳体的所述容置空间,允许所述叶片组件自所述结构缝隙伸出至所述壳体通孔。
根据本申请的一个实施例,所述壳体所述结构缝隙被形成于所述上盖和所述基底之间。
根据本申请的一个实施例,所述基底包括基底主体以及从所述基底主体向所述叶片组件方向延伸的至少一第一凸部和至少一第二凸部,所述第一凸部位于所述第二凸部的内侧,所述第一凸部和所述第二凸部通过一体成型的方式固定于所述基底主体,其中各所述叶片元件被支撑在所述基底的所述第一凸部和所述第二凸部。
根据本申请的一个实施例,所述第一凸部与所述第二凸部之间还形成一环状凹槽。
根据本申请的一个实施例,所述第二凸部进一步包括三或以上限位凸起,所述叶片组件的各所述叶片单元被可轴转地支撑于各所述限位凸起。
根据本申请的一个实施例,所述第二凸部进一步包括一或以上限位凸起,所述传动机构的各限位挡板包括第一限位挡板和第二限位挡板,并且所述第一限位挡板和所述第二限位挡板之间形成所述限位挡板的限位区域,所述基底的所述限位凸起的至少一部分伸入所述限位挡板的限位区域。
根据本申请的一个实施例,所述叶片元件的最大旋转角度为3°。
根据本申请的一个实施例,进一步包括被设置于所述基底的顶面的支撑组件,所述传动机构被支撑在所述基底的所述支撑组件的上方,并且所述传动机构被夹设于所述基底的所述支撑组件和所述驱动机构。
根据本申请的一个实施例,所述支撑组件进一步包括多个滑块,所述滑块为凸起的半球状结构。
根据本申请的一个实施例,所述基底进一步包括从所述基底主体向所述叶片组件方向延伸的至少三限位柱,所述至少三限位柱与所述传动机构的外侧壁相接触,进而限制所述传动机构的平移或者倾斜。
根据本申请的另一方面,本申请进一步提供一摄像模组,包括:
感光组件;
镜头组件,其中所述镜头组件被保持于感光组件的感光路径;以及
如上任一所述的可变光圈装置,其中所述可变光圈装置位于所述镜头组件的入光侧。
按照本申请的第二种设计方案,提出另一种可变光圈装置和摄像模组。
本发明的一个主要优势在于提供一可变光圈装置和带有可变光圈装置的摄像模组,其中所述可变光圈装置具有一孔径可变的通光孔,通过调整所述通光孔的孔径调整所述摄像模组的进光量,有利于满足摄像模组对进光量的需求。
本发明的另一个优势在于提供一可变光圈装置和带有可变光圈装置的摄像模组,其中所述可变光圈装置包括壳体、驱动组件、传动机构以及与所述传动机构相传动地连接的叶片组件,其中所述驱动组件被设置于所述壳体,并且位于所述传动机构的侧边。所述驱动组件在不增加高度的情况下驱动所述传动机构运动,有利于所述可变光圈装置和所述摄像模组的小型化。
本发明的另一个优势在于提供一可变光圈装置和带有可变光圈装置的摄像模组,其中所述驱动组件包括驱动构件、活动部件、固定部以及回复构件,其中所述驱动构件能够驱动所述活动部件进而带动所述传动机构相对于所述基底旋转运动,所述回复构件能够在驱动停止后带动所述活动部件进而带动所述传动机构回复原位。
本发明的另一个优势在于提供一可变光圈装置和带有可变光圈装置的摄像模组,其中所述驱动构件为SMA线,在满足所述传动机构转动需求的情况下简化了所述驱动组件的结构。
本发明的另一个优势在于提供一可变光圈装置和带有可变光圈装置的摄像模组,其中所述驱动构件为螺旋状SMA线及具有弯折的SMA线可以增加SMA的长度,增大SMA线的活动行程。
依本发明的一个方面,能够实现前述目的和其他目的和优势的本发明的可变光圈装置,包括:
壳体;
叶片组件;
传动机构,其中所述传动机构被可旋转地设置于所述壳体,与所述叶片组件相啮合,通过所述传动机构带动所述叶片组件,以形成孔径可变的通光孔;以及
驱动组件,所述驱动组件进一步包括驱动构件和回复构件,其中所述驱动构件和所述回复构件被固定于所述壳体,并且可传动地连接于所述传动机构,其中所述驱动构件可提供驱动所述传动机构转动的作用力,所述回复构件提供反向转动的作用力,以通过所述驱动构件和所述回复机构驱动所述传动机构往复地转动。
根据本申请的一较佳实施例,进一步包括至少一活动部件,其中所述至少一活动部 件与所述传动机构相连,所述驱动组件的所述驱动构件和所述回复构件被可伸缩地连接于所述至少一活动部件。
根据本申请的一较佳实施例,所述驱动构件进一步包括驱动构件牵引端和驱动构件固定端,所述回复构件进一步包括回复构件牵引端和回复构件固定端,所述驱动构件固定端和所述回复构件固定端被固定于所述壳体,所述活动部件被可传动地连接于所述驱动构件牵引端和所述回复构件牵引端,并且所述驱动构件牵引端和所述回复构件牵引端位于所述活动部件的相对侧,由所述驱动构件和所述回复构件通过所述活动部件驱动所述传动机构往复地转动。
根据本申请的一较佳实施例,所述驱动构件和所述回复构件被固定于所述壳体的同侧,且所述驱动构件牵引端、所述回复构件牵引端以及所述活动部件处于同一直线。
根据本申请的一较佳实施例,所述驱动构件的所述驱动构件固定端和所述回复构件固定端被固定于所述壳体的相邻侧。
根据本申请的一较佳实施例,进一步包括一固定部,其中所述固定部被固定于所述壳体,所述驱动构件固定端和所述回复构件固定端被所述固定部固定于所述壳体。
根据本申请的一较佳实施例,所述固定部包括第一固定部和第二固定部,其中所述驱动构件被可伸缩地设置在所述第一固定部和所述活动部件之间,所述回复构件被可伸缩地设置在所述第二固定部和所述活动部件之间。
根据本申请的一较佳实施例,所述驱动构件为直线状的SMA线。
根据本申请的一较佳实施例,所述驱动构件进一步包括一所述驱动构件包括至少一弯曲段和自所述弯曲段一体延伸的至少二直线段。
根据本申请的一较佳实施例,所述驱动构件为螺旋状SMA线。
根据本申请的一较佳实施例,所述回复构件从由弹簧和弹片组成的弹性元件组合中选择。
根据本申请的一较佳实施例,所述回复构件为SMA线。
根据本申请的一较佳实施例,M为所述驱动构件的收缩量,α为所述传动机构旋转的角度,L为轴线O至所述驱动构件沿长度方向所在直线的距离,M>sinα*L。
根据本申请的一较佳实施例,所述壳体包括基底和扣合于所述基底的盖体,其中所述基底进一步包括基底主体和被设置于所述基底主体的至少一绕线柱,所述至少一绕线柱被一体地成型于所述基底主体,并且所述弯曲段与所述绕线柱相接触,所述驱动构件的所述二直线段位于所述基底的相邻侧。
根据本申请的一较佳实施例,所述传动机构包括传动主体和被设置于所述传动主体 的移动端,其中所述移动端自所述传动主体的外侧一体地向外延伸,所述移动端与所述活动部件相传动地连接。
根据本申请的一较佳实施例,所述叶片组件包括多个叶片元件,其中各所述叶片元件包括叶片主体和叶片轴套,其中所述叶片主体与所述叶片轴套相连,其中所述传动机构包括传动主体和多个驱动齿,其中所述传动主体呈环状结构,所述多个驱动齿被设置于所述传动主体的内侧,其中所述叶片轴套与所述传动机构的所述驱动齿相啮合。
根据本申请的一较佳实施例,所述壳体包括盖体和基底,其中,所述基底与所述盖体之间能够相互扣合,并形成一收容腔,收容腔用于容置所述驱动组件、所述叶片组件以及所述传动机构,其中所述基底包括基底主体和被形成于所述基底主体的第一凸部和第二凸部,以及形成于所述第一凸部和所述第二凸部的环状凹槽,其中所述第二凸部包括限位凸起和多个轴凸,所述叶片轴套被所述第二凸部的所述轴凸限制,所述限位挡板组包括第一限位挡板和第二限位挡板,所述第一限位挡板与所述第二限位挡板形成所述限位槽,所述限位凸起位于所述限位挡板组的所述限位槽。
根据本申请的一较佳实施例,进一步包括盖板,所述盖板设置于所述盖体与所述传动机构之间。
根据本申请的一较佳实施例,进一步包括一电连接元件,其中所述电连接元件被设置于所述壳体,所述电连接元件与所述驱动组件相电气连接。
根据本申请的另一方面,本申请进一步提供一摄像模组,包括:
感光组件;
被保持在所述感光组件的感光路径的镜头组件;以及
如上任一所述的可变光圈装置,其中所述可变光圈装置被设置于所述镜头组件的入光侧。
按照本申请的第三种设计方案,提出又一种可变光圈装置和摄像模组。
本发明的一个主要优势在于提供一可变光圈装置和带有可变光圈装置的摄像模组,其中所述可变光圈装置具有一孔径可变的通光孔,通过调整所述通光孔的孔径调整所述摄像模组的进光量,有利于满足摄像模组对进光量的需求。
本发明的另一个优势在于提供一可变光圈装置和带有可变光圈装置的摄像模组,其中所述可变光圈装置包括壳体、驱动组件、传动机构以及与所述传动机构相传动地连接的叶片组件,其中所述驱动组件被设置于所述壳体,并且位于所述传动机构的侧边。所述驱动组件在不增加高度的情况下驱动所述传动机构运动,有利于所述可变光圈装置和所述摄像模组的小型化。
本发明的另一个优势在于提供一可变光圈装置和带有可变光圈装置的摄像模组,其中所述驱动组件包括驱动构件、活动部件、固定部以及回复构件,其中所述驱动构件能够驱动所述活动部件进而带动所述传动机构相对于所述基底旋转运动,所述回复构件能够在驱动停止后带动所述活动部件进而带动所述传动机构回复原位。
本发明的另一个优势在于提供一可变光圈装置和带有可变光圈装置的摄像模组,其中所述驱动构件为SMA线,在满足所述传动机构转动需求的情况下简化了所述驱动组件的结构。
本发明的另一个优势在于提供一可变光圈装置和带有可变光圈装置的摄像模组,其中所述驱动构件为螺旋状SMA线及具有弯折的SMA线可以增加SMA的长度,增大SMA线的活动行程。
依本发明的一个方面,能够实现前述目的和其他目的和优势的本发明的可变光圈装置,包括:
壳体;
叶片组件;
传动机构,其中所述传动机构被可旋转地设置于所述壳体,与所述叶片组件相传动地连接,通过所述传动机构带动所述叶片组件,以形成孔径可变的通光孔;以及
驱动组件,所述驱动组件进一步包括驱动构件、回复构件、第一导引机构以及第二导引机构,其中所述驱动构件被设置于所述第一导引机构,所述回复构件被设置于所述第二导引机构,所述驱动构件被所述第一导引机构支撑可伸缩地运动,所述回复机构被所述第二导引机构支撑可伸缩地运动,其中所述驱动构件和所述回复构件被可传动地连接于所述传动机构,以通过所述驱动构件和所述回复机构驱动所述传动机构往复地转动。
根据本申请的至少一实施例,所述第一导引机构和所述第二导引机构为内部中空的管状结构,其中所述驱动构件被内置于所述第一导引机构,所述回复构件被内置于所述第二导引机构。
根据本申请的至少一实施例,所述第一导引机构和所述第二导引机构为支撑杆结构,其中所述第一导引机构置于所述驱动构件,所述第二导引机构置于所述回复构件。
根据本申请的至少一实施例,所述第一导引机构和所述第二导引机构呈长条形结构,并且所述第一导引机构和所述第二导引机构位于所述壳体的同侧。
根据本申请的至少一实施例,所述第一导引机构和所述第二导引机构呈弧形结构。
根据本申请的至少一实施例,所述第一导引机构和所述第二导引机构相对于传动机构被对称地设置于所述传动机构周向外侧。
根据本申请的至少一实施例,进一步包括至少一活动部件,其中所述至少一活动部件与所述传动机构相连,所述驱动组件的所述驱动构件和所述回复构件被可伸缩地连接于所述至少一活动部件。
根据本申请的至少一实施例,所述驱动构件进一步包括驱动构件牵引端和驱动构件固定端,所述回复构件进一步包括回复构件牵引端和回复构件固定端,所述驱动构件固定端和所述回复构件固定端被固定于所述壳体,所述活动部件被可传动地连接于所述驱动构件牵引端和所述回复构件牵引端,并且所述驱动构件牵引端和所述回复构件牵引端位于所述活动部件的相对侧,由所述驱动构件和所述回复构件通过所述活动部件驱动所述传动机构往复地转动。
根据本申请的至少一实施例,所述驱动构件和所述回复构件被固定于所述壳体的同侧,且所述驱动构件牵引端、所述回复构件牵引端以及所述活动部件处于同一直线。
根据本申请的至少一实施例,进一步包括一固定部,其中所述固定部被固定于所述壳体,所述驱动构件固定端和所述回复构件固定端被所述固定部固定于所述壳体。
根据本申请的至少一实施例,所述固定部包括第一固定部和第二固定部,其中所述驱动构件被可伸缩地设置在所述第一固定部和所述活动部件之间,所述回复构件被可伸缩地设置在所述第二固定部和所述活动部件之间。
根据本申请的至少一实施例,所述驱动构件选自由直线状的SMA线、长条形的螺旋状SMA线以及弧形的螺旋转SMA线组成的组合。
根据本申请的至少一实施例,所述回复构件从由弹簧和弹片组成的弹性元件组合中选择。
根据本申请的至少一实施例,所述回复构件从直线状的SMA线、长条形的螺旋状SMA线以及弧形的螺旋转SMA线组成的组合中选择。
根据本申请的至少一实施例,M为所述驱动构件的收缩量,α为所述传动机构旋转的角度,L为轴线O至所述驱动构件沿长度方向所在直线的距离,M>sinα*L。
根据本申请的至少一实施例,所述传动机构包括传动主体和被设置于所述传动主体的移动端,其中所述移动端自所述传动主体的外侧一体地向外延伸,所述移动端与所述活动部件相传动地连接。
根据本申请的至少一实施例,所述叶片组件包括多个叶片元件,其中各所述叶片元件包括叶片主体和叶片轴套,其中所述叶片主体与所述叶片轴套相连,各所述叶片元件的所述叶片轴套与所述传动机构相啮合。
根据本申请的至少一实施例,所述壳体包括盖体和基底,其中,所述基底与所述盖 体之间能够相互扣合,并形成一收容腔,收容腔用于容置所述驱动组件、所述叶片组件以及所述传动机构,其中所述基底包括基底主体和被形成于所述基底主体的第一凸部和第二凸部,以及形成于所述第一凸部和所述第二凸部的环状凹槽,其中所述第二凸部包括限位凸起和多个轴凸,所述叶片轴套被所述第二凸部的所述轴凸限制,所述限位挡板组包括第一限位挡板和第二限位挡板,所述第一限位挡板与所述第二限位挡板形成所述限位槽,所述限位凸起位于所述限位挡板组的所述限位槽。
根据本申请的至少一实施例,进一步包括盖板,所述盖板设置于所述盖体与所述传动机构之间。
根据本申请的至少一实施例,进一步包括一电连接元件,其中所述电连接元件被设置于所述壳体,所述电连接元件与所述驱动组件相电气连接。
根据本申请的另一方面,本申请进一步提供摄像模组,包括:
感光组件;
被保持在所述感光组件的感光路径的镜头组件;以及
如上任一所述的可变光圈装置,其中所述可变光圈装置被设置于所述镜头组件的入光侧。
通过对随后的描述和附图的理解,本发明进一步的目的和优势将得以充分体现。
本发明的这些和其它目的、特点和优势,通过下述的详细说明和附图得以充分体现。
附图说明
图1是根据本申请的第一较佳实施例的一可变光圈装置的分解示意图。
图2A是根据本申请上述第一较佳实施例的所述可变光圈装置的俯视示意图,其示出了所述可变光圈装置的最大光圈状态。
图2B是根据本申请上述第一较佳实施例的所述可变光圈装置的俯视示意图,其示出了所述可变光圈装置的最小光圈状态。
图3是根据本申请上述第一较佳实施例的所述可变光圈装置的一叶片的结构放大示意图。
图4是根据本申请上述第一较佳实施例的所述可变光圈装置的剖面示意图。
图5是根据本申请上述第一较佳实施例的所述可变光圈装置的一基底的结构示意图。
图6是根据本申请上述第一较佳实施例的所述可变光圈装置的一驱动组件的结构示意图。
图7是根据本申请上述第一较佳实施例的所述可变光圈装置的部分结构组件示意图。
图8是根据本申请上述第一较佳实施例的所述可变光圈装置的立体结构剖视图。
图9A是根据本申请上述第一较佳实施例的所述可变光圈装置的另一可选实施方式的示意图。
图9B是根据本申请上述第一较佳实施例的所述可变光圈装置的另一可选实施方式的俯视图。
图9C是根据本申请上述第一较佳实施例的所述可变光圈装置的另一可选实施方式的一驱动组件的示意图。
图10是根据本申请另一方面的一摄像模组的结构示意图。
图11是根据本发明的第一较佳实施例的一可变光圈装置的分解示意图。
图12是根据本发明上述第一较佳实施例的所述可变光圈装置的一叶片组件的结构示意图。
图13是根据本发明上述第一较佳实施例的所述可变光圈装置俯视图,其示出了所述可变光圈装置的一传动机构与所述叶片组件的啮合状态。
图14是根据本发明上述第一较佳实施例的所述可变光圈装置的所述传动机构的示意图。
图15是根据本发明上述第一较佳实施例的所述,其示出了所述可变光圈装置的一驱动组件与传动机构的连接状态。
图16是根据本发明上述第一较佳实施例的所述可变光圈装置的一壳体的结构示意图。
图17是根据本发明上述第一较佳实施例的所述可变光圈装置的立体结构的剖视图。
图18是根据本发明上述第一较佳实施例的所述可变光圈装置的所述壳体的一基底的侧视图。
图19是根据本发明上述第一较佳实施例的所述可变光圈装置的剖视图。
图20A和图20B是根据本发明上述第一较佳实施例的所述可变光圈装置的驱动组件的运动状态示意图。
图21A和图21B是根据本发明上述第一较佳实施例的所述可变光圈装置在初始位置和牵引位置的示意图。
图22是根据本发明上述第一较佳实施例的所述可变光圈装置的一驱动组件的另一可选实施方式的示意图。
图23A和图23B是根据本发明上述第一较佳实施例的所述可变光圈装置的一驱动组件的另一可选实施方式的示意图。
图24A和图24B是根据本发明上述第一较佳实施例的所述可变光圈装置的一驱动组 件的另一可选实施方式的示意图。
图25是根据本发明一较佳实施例的摄像模组的结构示意图。
具体实施方式
以下描述用于揭露本发明以使本领域技术人员能够实现本发明。以下描述中的优选实施例只作为举例,本领域技术人员可以想到其他显而易见的变型。在以下描述中界定的本发明的基本原理可以应用于其他实施方案、变形方案、改进方案、等同方案以及没有背离本发明的精神和范围的其他技术方案。
本领域技术人员应理解的是,在本发明的揭露中,术语“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系是基于附图所示的方位或位置关系,其仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此上述术语不能理解为对本发明的限制。
可以理解的是,术语“一”应理解为“至少一”或“一个或多个”,即在一个实施例中,一个元件的数量可以为一个,而在另外的实施例中,该元件的数量可以为多个,术语“一”不能理解为对数量的限制。
依照本申请的一方面,本申请提供一种可变光圈装置20以及使用该可变光圈装置20的摄像模组,在本申请的技术方案中,可变光圈装置20通过改变其光圈孔径的大小调整摄像模组的光圈数值,进而实现不同光圈数值的拍摄。
参照本申请说明书附图之图1至图9C所示,依照本申请第一较佳实施例的所述可变光圈装置20在接下来的描述中被阐明。所述可变光圈装置20包括壳体21,被设置于所述壳体21的叶片组件24、传动机构23以及驱动机构22。所述叶片组件24被可旋转地设置于所述壳体21,所述传动机构23可传动地连接所述叶片组件24于所述驱动机构22,其中所述驱动机构22通过所述传动机构23带动所述叶片组件24转动,以实现所述可变光圈装置20的光圈大小可调。
所述壳体21包括上盖211和基底212,所述上盖211和所述基底212形成用于容纳并保护所述叶片组件24、所述传动机构23以及所述驱动机构22的一容置空间。在本申请的一个实施例中,所述上盖211用于覆盖和保护所述可变光圈装置20的上表面和侧表面,所述上盖211包括中心具有一通光孔的盖体主体2111,一体连接于所述盖体主体2111外侧的四个盖体外侧部2112,以及一位于所述盖体主体2111内侧的一盖体内侧部2113。所述基底212的中心具有一通光孔,所述上盖211的通光孔和所述基底212的通光孔构成所 述壳体21的壳体通孔251,从而提供摄像模组的成像光线通过的通光路径。作为优选地,所述上盖211的通光孔和所述基底212的通光孔为孔径相同的圆形。
所述壳体21具有一入光口和一出光口,其中所述入光口被形成于所述上盖211的入光侧,所述出光口被形成于所述壳体21的所述基底212的出光侧,并且所述壳体21的所述入光口和所述出光口连通所述壳体21的所述壳体通孔251。
可选地,在本申请的另一个实施例中,所述上盖211包括盖体主体2111,所述基底212包括基底主体2121和沿所述基底主体2121四周向上一体延伸的四个基底侧部,所述基底212通过所述四个基底侧部与所述上盖211粘接固定。
值得一提的是,在本申请的一个实施例中,所述上盖211的通光孔与所述基底212的通光孔同轴设置,从而在满足成像光线通过的同时,减小杂光对摄像模组的成像干扰。
在本申请的该优选实施例中,所述叶片组件24和所述传动机构23相传动地连接,由所述传动机构23带动所述叶片组件24以特定的方向转动。所述传动机构23被夹设于所述壳体21的所述基底212和所述驱动机构22之间。因此,在本申请的该优选实施例中,所述驱动机构22和所述基底212位于所述传动机构23的相对侧。作为示例的,在本申请的该优选实施例中,所述基底212位于所述传动机构23和所述叶片组件24的下方,所述驱动机构22位于所述传动机构23和所述叶片组件24的上方,其中所述传动机构23和所述叶片组件24被所述壳体21的所述基底212支撑,并且所述传动机构23在所述基底212的支撑作用下可被所述驱动机构22驱动,并由所述传动机构23带动所述叶片组件24转动。
如图2A和图2B所示,所述叶片组件24包括三或以上叶片元件241,所述三或以上叶片元件241沿逆时针(或顺时针)方向合围,并形成一孔径可变的叶片通孔252。可以理解的是,当所述可变光圈装置20的叶片元件241的数量越多时,所述三或以上叶片元件241围成的叶片通孔252更接近圆形,从而摄像模组具有更优的成像效果。
在本申请的一个实施例中,所述叶片通孔252具有一中心轴,该中心轴垂直于所述三或以上叶片元件241所形成的平面,所述三或以上叶片元件241围绕所述叶片通孔252的中心轴旋转对称,从而形成的所述叶片通孔252的图案为旋转对称图案。换言之,沿俯视方向(也即光线入射方向)看,所述三或以上叶片元件241围绕所述叶片通孔252的中心旋转对称,各所述叶片元件241的形状相同。
值得一提的是,在本申请中,所述可变光圈装置20具有孔径可变的光圈通孔25,所述光圈通孔25的孔径大小可依据摄像模组拍摄的需求而调整,所述光圈通孔25的孔径大小可以由所述叶片通孔252或者所述可变光圈装置20中其他元件的最小孔径决定。优选 地,在本申请的一个实施例中,所述可变光圈装置20的光圈通孔25的最大光圈状态和最小光圈状态均由所述三或以上叶片元件241围成的叶片通孔252决定,即所述三或以上叶片元件241改变所述可变光圈装置20的光圈通孔25的孔径大小。
所述可变光圈装置20形成的所述光圈通孔25位于所述壳体21的所述入光口和所述出光口之间,并且由所述可变光圈装置20的所述光圈通孔25决定所述可变光圈装置20的进光量。也就是说,由所述叶片组件24形成的所述叶片通孔252位于所述壳体21的所述壳体通孔251内侧,通过所述叶片组件24的各所述叶片元件241的运动限定所述叶片通孔252的孔径大小,从而调整所述可变光圈装置20的进光量。
可选地,在本申请的另一个实施例中,所述可变光圈装置20的光圈通孔25的最小光圈状态由所述三或以上叶片元件241围成的叶片通孔252决定,所述可变光圈装置20的光圈通孔25的最大光圈状态由所述可变光圈装置20中其他元件(例如壳体21的壳体通孔251)的最小孔径决定。当所述三或以上叶片元件241围成的叶片通孔252的孔径变小时,所述可变光圈装置20的光圈通孔25的孔径变小。
在本申请的该优选实施例中,所述壳体21进一步设有结构缝隙210,其中所述结构缝隙210连通所述壳体21的所述壳体通孔251和所述壳体21的所述容置空间。位于所述壳体21的所述容置空间的所述叶片组件24可被驱动地自所述壳体21的所述结构缝隙210伸出至所述壳体21的所述壳体通孔251;或者所述叶片组件24可被驱动地自所述壳体21的所述壳体通孔251回缩至所述壳体21的所述结构缝隙210。值得一提的是,在初始状态下,所述叶片组件24被保持在所述壳体21的所述容置空间,即所述可变光圈装置20处于最大光圈状态。
可以理解的是,所述壳体21的所述结构缝隙210被形成于所述壳体21的所述上盖211和所述基底212之间,其中所述壳体21的所述结构缝隙210高度方向的尺寸适于所述叶片组件24的厚度,以允许所述叶片组件24伸出或回缩。可以理解的是,所述壳体21的所述上盖211和所述基底212的表面为封闭结构,允许所述叶片组件24伸出和回缩的所述结构缝隙210被形成于所述上盖211和所述基底212内侧,能够阻止灰尘等杂质进入到所述壳体21的所述容置空间。
参照图3,在本申请的一个具体示例中,各叶片元件241包括叶片主体2411和与所述叶片主体2411相连且支撑所述叶片主体2411转动的轴套2412。各所述叶片元件241的所述叶片主体2411可基于所述轴套2412的一轴线方向转动。各所述叶片元件241被可轴转地设置于所述基底212,其中各所述叶片元件241被所述基底212支撑,并且各所述叶片元件241的所述轴套2412与所述传动机构23相传动地连接,由所述传动机构23驱动各 所述叶片元件241的所述轴套2412运动。也就是说,在本申请的该优选实施例中,各所述叶片元件241被所述传动机构23带动,在所述基底212的支撑作用下,由所述叶片主体2411基于所述轴套2412做轴转地运动。
所述叶片主体2411包括靠近所述轴套2412的叶片根部24114、远离轴套2412的叶片端部24111、连接所述叶片根部24114和所述叶片端部24111并位于内侧(靠近叶片通孔252一侧)的叶片内侧部24112以及连接所述叶片根部24114和所述叶片端部24111并位于外侧(远离叶片通孔252一侧)的叶片外侧部24113。所述叶片元件241的叶片主体2411的叶片内侧部24112的至少一部分组成所述叶片组件24的叶片通孔252的周缘。在本申请的一个实施例中,各所述叶片元件241的所述叶片内侧24112的相同位置的一部分组成所述叶片组件24的叶片通孔252的周缘,各所述叶片元件241的所述叶片内侧24112的形状相同。各所述叶片元件241的叶片主体2411围成的所述叶片通孔252的形状为旋转对称图案。也就是说,所述叶片主体2411通过所述叶片端部24111与所述轴套2412相固定。
各叶片元件241的所述叶片元件241的所述叶片主体2411位于前一个(沿逆时针方向)叶片元件241的所述叶片主体2411的上方或者下方。具体地,沿逆时针方向,在本申请的一个实施例中,各所述叶片元件241的所述叶片元件241的叶片主体2411位于前一个叶片元件241的叶片主体2411的上方和后一个叶片元件241的叶片主体2411的下方。在本申请的另一个实施例中,各所述叶片元件241的每个叶片元件241的叶片主体2411位于前一个叶片元件241的叶片主体2411的下方和后一个叶片元件241的叶片主体2411的上方。简言之,在本申请的该优选实施例中,所述叶片组件24的各所述叶片元件241沿顺时针或逆时针方向顺次排布,由所述叶片组件24的各所述叶片元件241围成内径尺寸可变的所述叶片通孔252。所述叶片组件24在所述基底212的支撑作用下,由所述驱动机构22通过所述传动机构23带动各所述叶片单元241以轴转的方式基于所述轴套2412轴转地运动,以调整所述叶片通孔252的内径。
在本申请的其他实施例中,各所述叶片元件241的所述叶片元件241的叶片主体2411分别位于其相邻的两个叶片元件241的叶片主体2411的上方和下方,换言之,所述三或以上叶片元件241的叶片主体2411高低交替的设置。
在本申请的另一个实施例中,所述叶片组件24的各叶片元件241沿顺时针方向延伸并合围形成一叶片通孔252,本申请并不为此所局限。
在本申请的一个具体实施例中,所述叶片组件24的所述叶片元件241的数量为八,即所述叶片组件24的各所述叶片元件241的叶片主体2411合围形成所述叶片组件24的 叶片通孔252。在申请中,所述叶片组件24的所述叶片元件241的数量越多,所述叶片通孔252的形状越接近圆形。因此,所述叶片组件24的所述叶片元件241的数量在此不做限制,其可以为三、四、五、六…。
优选地,所述叶片组件24的叶片元件241的数量为奇数,能够分散具有高亮度的被摄物体的光线,避免产生强光束,使成像更加柔和。
优选地,所述叶片主体2411与所述轴套2412一体成型。可选地,在本申请的另一个实施例中,所述叶片主体2411与所述轴套2412通过粘接的方式相固定,所述叶片主体2411与所述轴套2412由两个不同的材质制成,这样,即可以保持所述叶片主体2411的厚度较薄,也可以保持所述轴套2412的机构强度。
如图2A和图2B所示,所述叶片组件24具有一最大光圈状态和一最小光圈状态,并且所述叶片组件24在所述基底212的支撑作用下,由所述驱动机构22通过所述传动机构23带动各所述叶片元件241在所述最大光圈状态和所述最小光圈状态之间切换。图2A和图2B分别示出了所述叶片组件24在最大光圈和最小光圈两种状态的示意图,当所述叶片组件24在由大光圈状态切换为小光圈状态时,各所述叶片元件241的所述叶片主体2411基于所述轴套2412的轴向方向朝靠近叶片通孔252中心的方向转动,以致所述叶片组件24的叶片通孔252的孔径变小。当所述叶片组件24在由小光圈状态切换为大光圈状态时,各所述叶片元件241的所述叶片主体2411基于所述轴套2412的轴向方向朝远离叶片通孔252中心的方向转动,以致所述叶片组件24的叶片通孔252的孔径变大。
各所述叶片单元241的所述轴套2412与所述传动机构23相传动地连接,由所述传动机构23带动所述轴套2412,使得各所述叶片单元241在所述基底212的支撑作用下基于所述轴套2412的一轴向方向转动。优选地,在本申请的该优选实施例中,各所述叶片单元241的所述轴套2412与所述传动机构23相啮合。因此,当传动机构23被所述驱动机构22驱动产生一轴向地转动,所述传动机构23带动与之相啮合的各所述叶片单元241轴向地转动。可选地,在本申请的其他可选实施方式中,所述叶片组件24的至少一所述叶片单元241可通过其他传动方式与所述传动机构23相连接,比如摩擦接触、铰链连接等。
继续参照图2A及图2B,所述叶片元件241的轴套2412包括轴套主体24121和一体成型于所述轴套主体24121的从动齿24122。所述叶片主体2411固定连接于所述轴套主体24121的一端,所述从动齿24122通过一体成型的方式固定于所述轴套主体24121的另一端,所述轴套2412的从动齿24122包括多个从动轮齿241221,所述从动齿24122与所述轴套主体24121位于同一平面。
所述传动机构23包括传动主体231,形成于所述传动主体231内侧的三或以上驱动 齿232、以及或以上限位挡板233。所述传动机构23的中间具有一通孔,所述三或以上驱动齿232和所述一或以上限位挡板233通过一体成型的方式形成于所述传动机构23内侧(朝向叶片元件241一侧)。所述传动机构23的各所述驱动齿232与各所述叶片单元241相啮合,其中所述传动机构23通过各所述驱动齿232带动各所述叶片单元241转动。
优选地,所述传动机构23的所述传动主体231呈环状转盘结构,其中所述叶片组件24的各所述叶片单元241被啮合在所述传动机构23的所述传动主体231的内侧,即各所述叶片单元241与所述传动机构23的所述传动主体231相内啮合地传动连接,由所述传动机构23带动内部的各所述叶片单元241运动。
详细地说,各所述驱动齿232包括多个驱动轮齿2321,所述驱动齿232通过所述驱动轮齿2321与所述轴套2412的从动齿24122的多个从动轮齿241221啮合。因此,通过旋转所述传动机构23,由所述从动齿24122与所述驱动齿232之间的啮合关系,实现所述叶片元件241的旋转。与所述轴套2412相固定的所述叶片主体2411的叶片端部24111向靠近或者远离叶片通孔252的中心的方向移动,实现所述叶片组件24的叶片通孔252的孔径大小调整。
优选地,为保持所述驱动齿232与所述从动齿24122之间良好的传动关系,在本申请的一个实施例中,所述驱动轮齿2321的数量比所述从动轮齿241221的数量少一个。例如,所述从动轮齿241221的数量为四,所述驱动轮齿2321的数量为三;在本申请的另一个实施例中,所述驱动轮齿2321的数量等于或者大于所述至少二从动轮齿241221的数量。例如,所述多个从动轮齿241221的数量为四,所述驱动轮齿2321的数量为四、五,甚至更多。换言之,设所述驱动轮齿2321的数量为M,设所述多个从动轮齿241221的数量为N,为保持所述从动齿24122在被驱动的过程中不易跳动或者脱落,其中M≥N-1。
在本申请的一个实施例中,所述传动机构23的各所述驱动齿232的数量与各所述叶片元件241的数量一致,从而每个驱动齿232可以分别对应一个叶片元件241上的从动齿24122。在一个具体的示例中,所述传动机构23的所述驱动齿232的数量为八,所述八个驱动齿232分别与八个叶片元件241上的从动齿24122啮合。
如图4和图5所示,所述基底212包括基底主体2121以及从所述基底主体2121向所述叶片组件24方向延伸的至少一第一凸部2122和至少一第二凸部2123。所述第一凸部2122位于所述第二凸部2123的内侧,所述第一凸部2122和所述第二凸部2123通过一体成型的方式固定于所述基底主体2121。所述第二凸部2123的顶面支撑所述三或以上叶片元件241的轴套2412,所述第一凸部2122的顶面支撑所述三或以上叶片元件241的叶片主体2411。因此,所述第一凸部2122的顶面和所述第二凸部2123的顶面的高度,所述三 或以上叶片元件241的位置可以被调整设置。所述第一凸部2122与所述第二凸部2123之间还形成一环状凹槽2124,所述环状凹槽2124减小所述第二凸部2123的顶面与所述三或以上叶片元件241的轴套2412的接触面积,进而减小所述轴套2412在移动时的摩擦阻力。因此,通过调整所述环状凹槽2124的宽度,调整所述叶片元件241在移动时所述轴套2412产生的摩擦阻力。在本申请的一个实施例中,所述环状凹槽2124中布设捕尘胶,借以所述捕尘胶可以捕获所述驱动壳体内以及从所述壳体通孔251中进入的灰尘等脏污。
值得一提的是,在本申请的该优选实施例中,所述结构缝隙210被形成于所述基底212的所述第一凸部2122和所述上盖211的所述盖体内侧部2113之间,即所述上盖211和所述基底212的对接位置处。可以理解的是,所述结构缝隙210为所述可变光圈装置20的所述壳体21与外界连通的接口,为形成于所述壳体21内侧的开口,以允许所述叶片组件24转动,缩小所述叶片通孔252的孔径。
优选地,在本申请的一个实施例中,所述第一凸部2122的顶面的高度稍高于所述第二凸部2123的顶面的高度,各所述叶片元件241的叶片主体2411的位置可以设置在所述可变光圈装置20中相对较高的位置。可选地,在本申请的另一个实施例中,所述第一凸部2122的顶面的高度低于所述第二凸部2123的顶面的高度,这样,所述三或以上叶片元件241的叶片主体2411的位置可以设置在所述可变光圈装置20中相对较低的位置。
参照图5所述,所述第二凸部2123进一步包括三或以上限位凸起21231,所述限位凸起21231的数量与所述叶片元件241的数量一致。所述叶片组件24的各所述叶片单元241被所述第二凸部2123支撑,并被所述第二凸部2123的各所述限位凸起21231限制以转动的方式运动。当所述传动机构23带动各所述叶片元件241转动时,各所述叶片元件241被各所述限位凸起21231限制,并基于所述第二凸部2123的各所述限位凸起21231轴向地转动。
相应地,各所述叶片元件241的所述轴套2412具有形成于所述轴套主体24121的一轴孔24123,各所述叶片元件241通过所述轴套2412的轴孔24123分别可旋转地固定于所述基底212的所述限位凸起21231。当各所述叶片元件241被驱动旋转时,各所述叶片元件241分别绕其所述旋转固定的限位凸起21231逆时针或者顺时针旋转,这样实现所述叶片通孔252的孔径大小调整。例如,当所述三或以上叶片元件241绕所述限位凸起21231沿逆时针方向旋转时,所述叶片通孔252的孔径变小,所述可变光圈装置20的光圈变小。在本申请的一个具体实施例中,所述限位凸起21231的数量为八,八个所述的叶片元件241分别通过所述叶片元件241上的轴孔24123与八个所述的限位凸起21231相配合,可旋转地固定于所述基底212。
在本申请的一个实施例中,各所述限位凸起21231等间距、均匀的分布在所述基底212的第二凸部2123的顶面的一个圆轨迹上。各所述叶片元件241在分别绕所述至少三限位凸起21231旋转的时候,各所述叶片元件241的叶片主体2411形成的叶片通孔252呈对称的形状设置。
在本申请的一个实施例中,所述第二凸部2123进一步包括一或以上限位凸起21232,所述传动机构23的各限位挡板233包括第一限位挡板2331和第二限位挡板2332,并且所述第一限位挡板2331和所述第二限位挡板2332之间形成所述限位挡板233的限位区域2333,所述基底212的所述一或以上限位凸起21232的至少一部分伸入所述限位挡板233的限位区域2333,所述限位挡板233的限位区域2333的宽度大于所述限位凸起21232的宽度,通过所述基底212的一或以上限位凸起21232与所述一或以上限位挡板233限制所述三或以上叶片元件241的旋转角度。优选地,在本申请的该优选实施例中,所述传动机构23被所述基底212的所述限位凸起21232限制,使得各所述叶片元件241的最大旋转角度为3°。
在本申请的一个具体实施例中,所述一或以上限位凸起21232的数量为八,八个限位凸起21232与八个所述限位凸起21231沿周向依次交替设置在所述第二凸起的顶面。所述一或以上限位挡板233的数量与所述限位凸起21232的数量一致,其数量也为八,八个限位挡板233与八个限位凸起21232相互配合,限制八个叶片组件24的最大旋转角度。在本申请的一个实施例中,所述八个限位挡板233与所述八个驱动齿232相互交替的从所述传动机构23向中心延伸,所述八个限位挡板233的间隔相等,所述八个驱动齿232之间的间隔相等。
为了保持所述传动机构23在所述驱动机构22的驱动下自转,所述基底212进一步包括从所述基底主体2121向所述叶片组件24方向延伸的至少三限位柱2128,所述至少三限位柱2128位于所述限位凸起21232的外侧并通过一体成型或者粘接的方式固定于所述基底主体2121。
参照图2A及图2B,当所述传动机构23旋转时,为防止所述传动机构23发生平移或者倾斜,所述传动机构23具有圆形的外侧壁,所述至少三限位柱2128与所述传动机构23的外侧壁相接触,进而限制所述传动机构23的平移或者倾斜。在本申请的一个具体实施例中,所述至少三限位柱2128的数量为三,三个限位柱2128等间距的分布在所述传动机构23的外侧壁并与所述传动机构23的外侧壁相接触,所述三个限位柱2128的形状为圆柱体。
所述传动机构23通过所述驱动机构22的驱动实现旋转,从而带动所述叶片元件241 的旋转,实现所述叶片通孔252的孔径大小调整,从而实现摄像模组的光圈连续调整或者阶梯调整。
在本申请中,所述驱动机构22被实施为压电马达,其中所述压电马达的推力大、尺寸小,便于实现所述传动机构23大角度的旋转,并且压电马达的自锁功能还能够使叶片通孔252的孔径大小在不通电的状态下被保持。
图6示出了本申请所述驱动机构22的一个实施例,所述驱动机构22位于所述传动机构23的上方,且可传动地连接于所述传动机构23。在本申请的第一较佳实施例中,所述驱动机构22包括压电组件221和电连接于所述压电组件221的驱动线路板223,所述压电组件221与所述传动机构23相传动地连接,所述驱动线路板223能够提供所述压电组件221激励电源,从而由所述压电组件221驱动所述传动机构23以特定方向旋转。
所述传动机构23被夹设于所述壳体21的所述基底212和所述驱动机构22的所述压电组件221之间,其中所述驱动机构22的所述压电组件221与所述传动机构23相接触,并由所述驱动机构22的所述压电组件221以摩擦力驱动所述传动机构23沿特定方向运动。
所述驱动线路板223包括相互电连接的线路板主体2231以及电连接部2232,所述线路板主体2231的中间具有提供光线通过的一通孔,所述电连接部2232从所述线路板主体2231向外延伸并弯折。所述驱动线路板223通过所述线路板主体2231所述压电组件221电连接,通过所述电连接部2232与外部电路电连接。
优选地,在本申请的该优选实施例中,所述压电组件221呈环状、弧形或者半环形结构。
所述压电组件221包括压电元件2211以及固定于所述压电元件2211的底面的摩擦驱动部2212,所述驱动机构22通过所述摩擦驱动部2212与所述传动机构23的顶面摩擦接触。所述压电元件2211呈圆环状结构,所述压电元件2211的中心具有一光线通过的通孔,即所述压电元件2211为环形压电元件。所述摩擦驱动部2212进一步包括呈圆环状、且等间距分布的多个摩擦头22121,所述多个摩擦头22121具有弹性。所述多个摩擦头22121的一端被可传动地固定于所述压电元件2211的底面,所述多个摩擦头22121的另一端的底面的摩擦系数较高,提供较大的摩擦力。在本申请的一个实施例中,所述上盖211提供所述驱动机构22预压力,所述驱动机构22通过所述摩擦驱动部2212的多个摩擦头22121与所述传动机构23的顶面摩擦接触,从而所述驱动机构22驱动所述传动机构23旋转。所述预压力的大小可以通过调整所述上盖211与所述基底212之间的距离调整。
值得一提的是,所述压电元件2211由压电材料制成,通过所述驱动线路板223施加 所述压电组件221的相应区域相位差为90°的两相电信号,通过逆压电效应,所述压电组件221产生行波运动,驱动所述传动机构23旋转,所述传动机构23带动所述三或以上叶片元件241旋转,改变所述叶片通孔252的孔径大小,通过调节两相电信号相位差实现所述传动机构23的顺时针/逆时针旋转。所述压电组件221的压电元件2211由于接入外部信号,由于逆压电效应产生振动,固定于所述压电元件2211的底面的多个摩擦头22121产生椭圆运动,进而摩擦驱动所述传动机构23旋转。简言之,在本申请的该优选实施例中,所述压电元件2211为环形压电元件,其中所述环形压电元件在电导通时能够输出驱动所述传动机构23转动的摩擦作用力。
在本申请的一个实施例中,提供所述压电元件2211的外部信号为行波信号,所述压电组件221利用行波的周向传播驱动所述传动机构23旋转。具体地,行波信号使所述压电组件221的多个摩擦头22121在与所述传动机构23相接触的表面质点沿椭圆轨迹移动,利用所述多个摩擦头22121与所述传动机构23接触的摩擦力推动所述传动机构23旋转。
在本申请的一个实施例中,所述传动机构23包括中心具有通孔的摩擦构件2311,所述摩擦构件2311通过粘接或者一体成型的方式固定于所述传动主体231的顶面,所述传动机构23通过其顶面的摩擦构件2311与所述驱动机构22的摩擦驱动部2212相接触,所述摩擦构件2311能够增加所述传动机构23的顶面的摩擦系数,提供所述传动机构23顶面一平整的表面,使所述驱动机构22的工作状态稳定。
可以理解的是,在本申请的该优选实施例中,所述摩擦构件2311与所述传动主体231固定连接,并且所述摩擦构件2311与所述驱动机构22相接触,其中所述摩擦构件2311的单侧宽度大于所述传动主体231在横向方向的单侧宽度,有利于增加所述传动机构23与所述驱动机构22的接触面积,从而有利于所述驱动机构22通过所述摩擦构件2311提供驱动所述传动机构23的摩擦力。
在本申请的一个实施例中,所述摩擦构件2311自所述传动主体231的上方向内延伸并覆盖所述三或以上叶片元件241的轴孔24123,通过所述摩擦构件2311保持各所述叶片元件241在转动过程中平稳地运动,有利于降低所述三或以上叶片元件241脱落的风险。可以理解的是,在本申请的该优选实施例中,所述摩擦构件2311具有一摩擦面和一连接面,其中所述摩擦构件2311的所述连接面与所述传动机构23的所述传动主体231相固定连接。所述摩擦构件2311的所述摩擦面朝向所述驱动机构22,并且所述驱动机构22的所述压电组件的所述摩擦头22121与所述摩擦构件2311的所述摩擦面接触,其中所述摩擦构件2311的所述摩擦面为糙面,以增加所述传动机构23与所述驱动机构22之间的摩擦力。
所述可变光圈装置20进一步包括被设置于所述基底212的顶面与所述传动机构23的底面的一支撑组件2125。如图4所示,所述支撑组件2125和所述驱动机构22夹持所述传动机构23。
所述传动机构23被支撑在所述基底212的所述支撑组件2125的上方,并且所述传动机构23被夹设于所述基底212的所述支撑组件2125和所述驱动机构22。所述传动机构23和所述驱动机构22相接触,并且所述驱动机构22和所述传动机构23具有预设压力,以便所述驱动机构22以摩擦传动的方式驱动所述传动机构23转动。值得一提的是,所述上盖211被盖设于所述驱动机构22的上方,通过所述上盖211调整所述传动机构23和所述驱动机构22之间的压力,以保证所述驱动机构22运动时,所述驱动机构22能够提供足够的作用力驱动所述传动机构22运动。
参照图5及图7所示出的实施例中,所述支撑组件2125固定于所述基底212的基底主体2121的顶面。在本申请的一个具体实施例中,所述支撑组件2125包括体成型于所述基底主体2121的顶面的多个滑块21251,所述多个滑块21251提供所述传动机构23一平面并支撑所述传动机构23。作为示例的,所述多个滑块21251可以是八个等间距呈环形分布在所述第二凸起周围的半球状滑块21251。在本申请的一个实施例中,所述传动机构23的底面与所述多个滑块21251相对应的位置向内凹陷形成一环形轨道,借由所述传动机构23的底面的环形轨道和所述多个滑块21251的配合,所述传动机构23在旋转时不易发生平移。
在本申请中,通过所述上盖211与所述基底212之间的固定提供所述驱动机构22和所述传动机构23需要的压力,以保持所述驱动机构22与所述传动机构23之间保持摩擦接触,并且可以通过改变所述上盖211与所述基底212之间的距离,调整提供给所述驱动机构22和所述传动机构23的预压力的大小。在本申请中,由于需要通过调整所述上盖211与所述基底212之间的距离改变预压力的大小。因此,所述多个限位柱2128与所述上盖211之间具有一空气间隙,从而防止对所述上盖211与所述基底212之间的距离的调整产生影响。
如图1及图8所示,所述基底212进一步包括从所述基底主体2121的顶面的四角向上延伸的四个固定凸部2126以及从所述基底主体2121的底面的四角向上凹陷的四个固定凹部2127,所述四个固定凹部2127形成于所述基底主体2121与所述四个固定凸部2126。通过在所述四个固定凹部2127中设置黏合介质,粘接固定所述上盖211和所述基底212,所述固定凹部2127增了所述基底212和所述上盖211之间的粘接面积,增强了所述上盖211和所述基底212粘接的稳定性。
在本申请的一个实施例中,所述可变光圈装置20还包括位置感测装置(图中未示出),所述位置感测装置被用于感测所述传动机构23的旋转度数,从而控制所述叶片通孔252的孔径大小。
图1至图8示出了本申请采用输出旋转运动的压电组件221作为驱动机构22驱动所述传动机构23旋转的驱动方式;图9A-图9C示出了另一种采用输出直线运动的驱动机构22,其中所述驱动机构22包括压电组件221A和与所述压电组件221A相连接的驱动线路板223,其中所述驱动机构22的所述压电组件221A在所述驱动电路板223的作用下输出用于驱动所述传动机构23旋转的直线运动。
具体地,所述压电组件221A包括压电元件2211A以及固定于所述压电元件2211A的底面的摩擦驱动部2212A。至少一压电元件2211A由压电材料制成,通过施加给所述压电组件221A的至少一压电元件2211A两个90°相移的正弦信号,使得所述压电元件2211A发生应变,产生形变,并利用高频交流电压,使所述压电元件2211A谐振,从而所述压电组件221A通过所述压电元件2211A驱动所述传动机构23移动。也就是说,在本申请的该优选实施例中,所述压电组件221A的所述压电元件2211A被实施为一直线压电元件,其在电导通情况下能为所述传动机构23驱动直线运动的作用力。
值得一提的是,与上述第一较佳实施例不同的是,在本申请的该优选实施例中,所述压电组件221A的所述压电元件2211A呈直板形结构。
与上述较佳实施例相同的是,所述摩擦驱动部2212A包括摩擦头22121A,所述压电组件221A通过所述摩擦驱动部2212A上的至少一摩擦头22121A与所述传动机构23摩擦接触,所述摩擦头22121A具有弹性。所述摩擦驱动部2212A可传动地连接于所述压电元件2211A,从而所述压电元件2211A被导通后,所述摩擦驱动部2212随所述压电元件2211A的形变而形变,从而带动至少一摩擦头22121A产生沿预设方向的单向偏摆往复运动,所述摩擦驱动部2212A在所述压电元件2211A的作用下提供用于驱动所述传动机构23移动的驱动力。在本申请的一个实施例中,所述摩擦头22121A的数量为多个,例如四个,从而使所述压电组件221A可以稳定输出线性的驱动力。
在本申请的一个实施例中,提供所述一行波信号,所述压电元件2211A在逆压电效应下产生形变,带动所述摩擦驱动部2212A以行波的方式运动,所述压电元件2211A的形变被传递至所述摩擦驱动部2212A,通过所述摩擦驱动部2212A的行波运动提供用于驱动所述传动机构23移动的驱动力。在本申请的另一个实施例中,所述压电元件2211A被导通驻波信号,所述压电元件2211A的形变带动所述摩擦驱动部2212A以驻波的方式沿着预设方向运动,对此并不为本申请所局限。
参照图9A至图9B,所述压电组件221A被设置于所述上盖211与所述传动机构23之间,所述上盖211提供所述压电组件221A预压力,所述压电组件221A通过所述摩擦驱动部2212的至少一摩擦头22121与所述传动机构23的顶面摩擦接触,从而所述压电组件221A驱动所述传动机构23移动。
在本申请的一个实施例中,所述驱动机构22包括压电组件221A,所述一个压电组件221A设置在所述传动机构23的顶面的边缘并与所述传动机构23的顶面摩擦接触。在本申请的另一个实施例中,所述驱动机构22包括多个压电组件221A,所述多个压电组件221A分别等间距的设置在所述传动机构23的顶面的边缘并与所述传动机构23的顶面摩擦接触,所述多个压电组件221A的驱动方向均为顺时针方向或者逆时针方向。
参照图9B,当所述驱动机构22包括两个压电组件221A时,所述两个压电组件221A分别设置于所述传动机构23的顶面的边缘相对的两侧,且当所述两个压电组件被导通后,所述两个压电组件的驱动方向相反,从而实现所述传动机构23的旋转。
在本申请的一个实施例中,所述传动机构23包括中心具有通孔的摩擦构件2311,所述摩擦构件2311通过粘接或者一体成型的方式固定于所述传动主体231的顶面,所述传动机构23通过其顶面的摩擦构件2311与所述直线驱动组件的摩擦驱动部2212相接触,所述摩擦构件2311可有效增加所述传动机构23的顶面的摩擦系数,提供所述传动机构23顶面一平整的表面,使所述压电组件221A的工作状态稳定。
所述可变光圈装置20进一步包括设置于所述基底212的顶面与所述传动机构23的底面的支撑组件2125,所述支撑组件2125和所述压电组件221A夹持所述传动机构23。参照图9A所述,所述支撑组件2125包括体成型于所述基底主体2121的顶面的滑块21251,所述多个滑块21251提供所述传动机构23一平面并支撑所述传动机构23。具体地,所述滑块21251可以是八个等间距呈环形分布在所述第二凸起周围的半球状滑块21251。可选地,在本申请的另一可选实施方式中,所述滑块21251可以被实施为滚珠,其中所述滑块21251被可转动地设置于所述基底主体2121。
在本申请的另一个实施例中,所述支撑组件2125包括自所述传动主体231向下延伸形成的环状延伸腿,所述传动机构23借由所述传动机构23的环状延伸腿支撑于所述基底212。
为实现并稳定所述传动机构23的旋转运动,所述可变光圈装置20还包括旋转导向组件。
在本申请的一个实施例中,所述旋转导向组件为从所述基底主体2121向所述叶片组件24方向延伸的多个限位柱2128,所述多个限位柱2128位于所述限位凸起21232的外 侧,并通过一体成型或者粘接的方式固定于所述基底主体2121。所述多个限位柱2128与所述传动机构23的圆形外侧壁相接触,进而限制所述传动机构23的平移或者倾斜,使所述可变光圈载体在所述压电组件221A的驱动下旋转。在一个具体示例中,所述限位柱2128的数量为三,三个限位柱2128等间距的分布在所述传动机构23的外侧壁并与所述传动机构23的圆形外侧壁相接触,所述三个限位柱2128的形状为圆柱体。
在本申请的另一个实施例中,所述旋转导向组件为形成于所述传动机构23的底面且与所述多个滑块21251相对的向内凹陷的环形轨道,所述传动机构23的环形轨道与所述基底212的通光孔的圆心重合。借由所述传动机构23的环形轨道和所述多个滑块21251的配合,限制所述传动机构23的平移或者倾斜,使所述可变光圈载体在所述压电组件221A的驱动下旋转。
在本申请的再一个实施例中,所述旋转导向组件为形成于所述基底主体2121的顶面且与所述传动机构23的环状延伸腿相对的向内凹陷的环形轨道,所述基底主体2121的环形轨道设置于所述第二凸部2123的外侧,所述基底主体2121的环形轨道与所述基底212的通光孔的圆心重合。所述环状延伸腿被设置于所述基底主体2121的环形轨道内,借由所述基底主体2121的环形轨道和环状延伸腿的配合,限制所述传动机构23的平移或者倾斜,使所述可变光圈载体在所述压电组件221A的驱动下旋转。
参照本申请说明书附图之图10所示,依照本申请另一方面的一摄像模组在接下来的描述中被阐明。所述摄像模组包括感光组件30、被保持于感光组件30的感光路径上的镜头组件10以及可变光圈装置20。
相应地,所述镜头组件10包括光学镜头11以及驱动所述光学镜头11移动的镜头驱动组件12。所述光学镜头11为一体式镜头,其包括镜筒111和容置于所述镜筒111中的至少镜片组112,所述镜片组112中包括光学镜片。作为示例的,在本申请的该优选实施例中,所述镜头驱动组件12包括镜头驱动可动部分、镜头驱动固定部分以及设置于所述镜头驱动可动部分和所述镜头驱动固定部分之间的镜头驱动元件,所述镜头驱动元件驱动所述镜头可动部分相对于所述镜头固定部分移动。所述光学镜头11固定于所述镜头驱动组件12的镜头可动部分并被所述镜头驱动组件12驱动进行沿光轴方向的移动或者垂直于光轴方向的移动,进而实现摄像模组的自动对焦功能或者光学防抖功能。
在本申请的另一个实施例中,所述光学镜头11为分体式镜头,其包括多个镜头部分。作为示例的,所述分体式镜头包括沿光轴设置的第一镜头部分和第二镜头部分,所述第二镜头部分包括第二镜筒以及安装于所述第二镜筒中的至少一第二镜片,所述第一镜头部件包括第一镜片,在一些实施方式中,所述第一镜头部件还包括第一镜筒,所述第一 镜片容置于所述第一镜筒中。
所述感光组件30包括芯片线路板31及安装于所述芯片线路板31上的感光芯片32、电子元件33、连接器36、底座34以及滤光元件35。所述芯片线路板31包括线路板主体311、连接带312以及连接器部分313,所述连接带312连接所述线路板主体311和所述连接器部分313并实现所述线路板主体311和所述连接器部分313之间的电导通。所述感光芯片32和所述电子元件33电连接于所述线路板主体311,所述连接器36安装于所述连接器部分313。
所述感光芯片32用于接收所述镜头组件10采集的外界光线成像并通过所述芯片线路板31与便携式设备电连接。所述感光芯片32包括感光区和非感光区,所述感光芯片32通过位于非感光区的感光芯片32焊盘电连接于所述芯片线路板31,例如,所述感光芯片32通过引线键合(打金线)、焊接、FC工艺(芯片倒装)或者RDL(再布线层技术)等方式电连接于所述芯片线路板31的线路板主体311。所述感光芯片32通过黏合介质固定于所述线路板主体311的正面(定义芯片线路板31朝向镜头组件10的表面为正面,芯片线路板31与正面相反一侧即为芯片线路板31的底面)。在本申请的一些实施例中,所述线路板主体311中间具有凹槽或者通孔(线路板通孔),所述感光芯片32安装固定于所述线路板主体311的凹槽或者线路板通孔中,从而减少所述线路板主体311的厚度对所述感光组件30厚度的影响,降低摄像模组高度。
所述底座34被设置于所述芯片线路板31的线路板主体311上,用于支撑其他部件。在本申请一个实施例中,所述底座34被实施为单独成型的塑料支架,其通过黏合介质附着于所述线路板主体311的表面,并用于支撑其他部件。当然,在本申请其他实施例中,所述底座34还能以其他方式形成于所述线路板主体311,例如,所述底座34被实施为模塑底座,其通过模塑工艺一体成型于所述线路板主体311的预设位置,对此并不为本申请所局限。
在本申请的一个实施例中,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。在本申请一个具体实施例中,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。值得一提的是,在本申请其他示例中,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,在本申请的其他实施例中,所述滤光元件35还能够被安装于所述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11内(例如,作为一层滤光膜附着于所述光学镜头11的某片光学镜片的表面),对此,并不为本申请所局限。
在本申请的一个实施例中,所述感光组件30还包括芯片驱动组件(附图未示出),所 述芯片驱动组件可驱动所述感光组件30的感光芯片32平移、旋转或者倾斜,进而实现摄像模组的芯片防抖功能。
所述可变光圈装置20安装于所述光学镜头11的顶面或者中间。在本申请的一个实施例中,所述可变光圈装置20安装于所述光学镜头11的顶面,并且所述可变光圈装置20与所述光学镜头11相固定。具体地,所述可变光圈装置20的基底212通过黏合介质粘接于所述光学镜头11的镜筒111,所述光学镜头11的至少一部分伸入所述可变光圈装置20的壳体通孔251内。所述可变光圈装置20的驱动线路板223与所述镜头驱动组件12电连接,在本申请的一个实施例中,所述可变光圈的驱动线路板与所述镜头驱动组件12的用于复位所述传动机构23的弹片电连接。
在本申请的另一个实施例中,所述光学镜头11为分体式镜头时,所述可变光圈装置20可以设置于所述光学镜头11的中间。具体地,所述第二镜头部分安装固定于所述镜头驱动组件12,所述第一镜头部分安装固定于所述可变光圈装置20的顶面,所述可变光圈装置20进一步安装固定于所述光学镜头11的镜筒111,进而所述第一镜头部分和所述第二镜头部分沿所述光学镜头11的光轴布设。
参照本发明说明书附图之图11至图22所示,依照本发明第一较佳实施例的一可变光圈装置和带有可变光圈装置的摄像模组在接下来的描述中被阐明。通过调整可变光圈装置100a的光圈孔径的大小来控制摄像模组的进光量的大小,使得摄像模组具有不同的景深,可以实现远景拍摄,或者人像拍摄。
示例性可变光圈装置100a
如图11所示,本申请公开了一种可变光圈装置100a,包括壳体10a、驱动组件20a、叶片组件30a及传动机构40a,其中所述传动机构40a被可传动地连接所述驱动组件20a于所述叶片组件30a,即所述传动机构40a可被所述驱动组件20a驱动,并带动所述叶片组件30a运动。所述壳体10a被安装于摄像模组的其他结构上,其中所述驱动组件20a、所述叶片组件30a及所述传动机构40a被容置于所述壳体10a。所述驱动组件20a邻近于所述传动机构40a,被设置于所述传动机构40a的周侧,所述驱动组件20a可驱动所述传动机构40a,以使得所述传动机构40a相对于所述壳体10a旋转运动。所述叶片组件30a与所述传动机构40a相互啮合,所述叶片组件30a在所述传动机构40a的带动下实现旋转运动,进而改变可变光圈装置100a的光圈孔径的大小。所述叶片组件30a与所述传动机构40a相连,其中所述叶片组件30a可被所述传动机构40a带动,并形成一光圈孔径可变的通光孔301a。可以理解的是,在本申请的该优选实施例中,所述叶片组件30a的所述通光孔301a的大小决定所述可变光圈装置的所述光圈孔径。
如图12至图13所示,在本申请实施例中,所述叶片组件30a包括多个叶片元件31a,其中各所述叶片元件31a包括叶片主体311a和叶片轴套312a,其中所述叶片主体311a与所述叶片轴套312a相连,各所述叶片元件31a的所述叶片轴套312a被可传动地连接于所述传动机构40a。在本申请一具体示例中,所述叶片元件31a的数量为8个,所述叶片主体311a和所述叶片轴套312a的数量也为8个。
具体地,在本申请实施例中,多个所述叶片主体311a呈环形分布,相邻的所述叶片主体311a之间具有交叠,以使得多个所述叶片主体311a之间形成用于光线穿过的所述通光孔301a。本申请中,多个所述叶片主体311a中的一个所述叶片主体311a位于前一个(沿逆时针方向)所述叶片主体311a的上方或下方。具体地,在本申请的一具体示例中,多个所述叶片主体311a中的一个所述叶片主体311a位于前一个所述叶片主体311a的上方和后一个所述叶片主体311a的下方。在本申请的另一具体示例中,多个所述叶片主体311a中的一个所述叶片主体311a位于前一个所述叶片主体311a的下方和后一个所述叶片主体311a的上方。在本申请的另一具体示例中,多个所述叶片主体311a中的一个所述叶片主体311a位于前一个所述叶片主体311a和后一个所述叶片主体311a的下方。在本申请的另一具体示例中,多个所述叶片主体311a中的一个所述叶片主体311a位于前一个所述叶片主体311a和后一个所述叶片主体311a的上方。也就是说,多个所述叶片主体311a可以沿同一方向交叠设置,也可以沿同一方向高低交替设置。
值得一提的是,在本申请实施例中,多个所述叶片主体311a相互交叠以形成近似圆形的光圈孔径,即多个所述叶片主体311a闭合时避免在两相邻所述叶片主体311a的内侧壁之间形成多边形开口,进而避免杂光从该多边形开口进入可变光圈装置100a内。进一步地,在本申请一实施例中,所述叶片主体311a的数量为奇数个,可以避免形成上述多边形开口,还可以用少量的所述叶片主体311a形成较大的光圈孔径。在本申请另一实施例中,所述叶片主体311a的数量为偶数个,所述叶片主体311a沿光圈孔径的中心对称设置,以避免形成上述多变形开口。
如图16至图19所示,在本申请实施例中,所述壳体10a包括盖体11a和基底12a,其中,所述基底12a与所述盖体11a之间能够相互扣合,并形成一收容腔,收容腔用于容置所述驱动组件20a、所述叶片组件30a、所述传动机构40a于其中,通过这样的方式,不仅可以保护可变光圈装置100a中的各个元件,也可以用于避免灰尘、脏污等进入可变光圈装置100a的内部。
具体地,在本申请实施例中,所述盖体11a套设于所述基底12a的上方,所述盖体11a位于光线的入光侧,所述基底12a位于光线的出光侧。进一步地,所述盖体11a的中 部设置有一开口,相应的,所述基底12a的中部也设置有一开口,所述盖体11a与所述基底12a的两个开口尺寸相同并上下对应。所述盖体11a的开口与所述基底12a的开口形成了所述壳体10a的壳体通孔,以使得经过物体反射的光线能够经过该壳体通孔。在本申请一具体示例中,所述盖体11a和所述基底12a的开口为圆形,本申请对所述盖体11a与所述基底12a的开口形状不做限制。在本申请一具体示例中,沿轴线O的一侧看其平面,所述基底12a呈四边形,其包括沿顺时针方向的第一边、第二边、第三边和第四边,第一边位于第一侧,第二边位于第二侧,第三边位于第三侧,第四边位于第四侧,第一边与第三边互相平行,第二边与第四边互相平行。
具体地,在本申请实施例中,所述基底12a进一步包括基底主体121a。在本申请一具体示例中,所述基底12a的开口位于所述基底主体121a。进一步地,所述基底12a进一步包括第一凸部122a、第二凸部123a及环状凹槽124a,所述第一凸部122a、所述第二凸部123a及所述环状凹槽124a分别环绕所述基底12a的开口设置,即所述第一凸部122a、所述第二凸部123a与所述环状凹槽124a的截面呈环形,所述环状凹槽124a设置于所述第一凸部122a与所述第二凸部123a之间,其中,所述基底12a的开口、所述第一凸部122a、所述第二凸部123a和所述环状凹槽124a四者的圆心重合。在本申请一具体示例中,所述基底12a相当于一个所述固定部23a,所述驱动组件20a、所述叶片组件30a及所述传动机构40a设置于所述基底12a上,通过所述基底12a对可变光圈装置100a中的各个元件进行支撑。
更具体地,在本申请实施例中,所述基底12a的所述第二凸部123a包括限位凸起1231a和多个轴凸1232a,所述限位凸起1231a和所述轴凸1232a自所述第二凸部123a向上延伸,所述限位凸起1231a的顶面高于所述第二凸部123a的顶面,所述轴凸1232a的顶面高于所述第二凸部123a的顶面。所述限位凸起1231a的数量为至少一个,所述轴凸1232a的数量与所述叶片元件31a的数量相同,为多个。在本申请一具体示例中,所述限位凸起1231a与所述轴凸1232a的数量不同且所述限位凸起1231a数量少于所述轴凸1232a数量,所述限位凸起1231a设置于两所述轴凸1232a之间。在本申请另一具体示例中,所述限位凸起1231a与所述轴凸1232a的数量相同,所述限位凸起1231a和所述轴凸1232a沿所述第二凸部123a的周向依次交替设置。进一步地,在本申请一具体示例中,所述限位凸起1231a与所述轴凸1232a自所述第二凸部123a一体向上延伸。在本申请另一具体示例中,所述限位凸起1231a与所述轴凸1232a也可以通过二次注塑成型于所述第二凸部123a。在本申请另一具体示例中,所述限位凸起1231a与所述轴凸1232a也可以采用粘贴或焊接的方式固定于所述第二凸部123a的顶面。
具体地,在本申请实施例中,所述叶片轴套312a包括轴套主体3121a、从动齿3122a及轴套连接端3123a,所述轴套连接端3123a设置于所述轴套主体3121a的一端,所述从动齿3122a被设置于所述轴套主体3121a的另一端。所述叶片轴套312a通过所述轴套连接端3123a与所述叶片主体311a固定连接。在本申请一具体示例中,所述叶片轴套312a的所述轴套连接端3123a与所述叶片主体311a通过粘胶固定。在本申请另一具体示例中,所述叶片轴套312a与所述叶片主体311a一体成型。进一步地,所述叶片轴套312a可以设置于所述叶片主体311a的底面。可以理解的是,所述叶片轴套312a也可以设置于所述叶片主体311a的顶面,本申请对此不做限制。在本申请中,所述轴套主体3121a上设置一定位孔,定位孔自所述轴套主体3121a的顶面向所述轴套主体3121a的底面延伸,该定位孔与所述基底12a的所述轴凸1232a活动连接,以使得所述轴套主体3121a定位于所述基底12a的所述轴凸1232a上,绕该所述轴凸1232a转动。在本申请中,所述从动齿3122a包括至少两个所述从动轮齿31221a,两个所述从动轮齿31221a之间形成所述从动齿槽31220a,所述从动齿槽31220a的数量为至少一个,所述从动轮齿31221a自所述轴套主体3121a向外延伸,所述从动轮齿31221a与叶片可动载体的所述驱动齿42a相互啮合,以使得所述叶片轴套312a在所述传动机构40a的带动下旋转运动。在本申请一具体示例中,所述从动轮齿31221a的数量为4个,所述从动齿槽31220a的数量为3个。
更具体地,在本申请实施例中,所述叶片主体311a与所述叶片轴套312a固定地连接,所述叶片轴套312a的转动控制所述叶片主体311a的开合,调整所述通光孔301a的孔径大小。在本申请一具体示例中,所述叶片轴套312a在所述传动机构40a的带动下沿一方向(顺时针方向)旋转,所述叶片主体311a随所述叶片轴套312a移动而打开,所述通光孔301a的孔径变大。在本申请另一示例中,所述叶片轴套312a在所述传动机构40a的带动下沿相反方向(逆时针方向)旋转,所述叶片主体311a随所述叶片轴套312a移动而闭合,所述通光孔301a的孔径变小。可以理解的是,所述叶片轴套312a可以控制所述叶片主体311a连续移动,实现所述通光孔301a的孔径连续变化。
如图11至图13所示,在本申请实施例中,所述传动机构40a包括传动主体41a、多个驱动齿42a及至少一限位挡板组43a。
具体地在本申请一具体示例中,所述传动主体41a的一截面呈圆环形,即可动载体的外缘呈圆形,可动载体的内缘呈圆形,各所述驱动齿42a及所述限位挡板组43a自所述传动主体41a的内缘向内延伸,即所述驱动齿42a及所述限位挡板组43a设置于通孔内。在本申请中,向内指朝向所述传动主体41a轴线O的一侧,向外指远离所述传动主体41a轴线O的一侧,所述传动主体41a轴线O为穿过所述传动主体41a的中心与所述传动主体 41a所在平面互相垂直的直线。
具体地,在本申请实施例中,所述叶片组件30a的所述叶片元件31a与所述传动机构40a的所述驱动齿42a相互啮合,所述驱动齿42a与所述叶片元件31a的数量相同,即所述传动机构40a包括多个所述驱动齿42a。在本申请一具体示例中,所述驱动齿42a的数量为8个。进一步地,每个所述驱动齿42a包括至少一个所述驱动轮齿421a,所述驱动轮齿421a自所述传动主体41a的内缘向内延伸,至少一个所述驱动轮齿421a环绕所述传动主体41a的内缘设置。进一步地,所述驱动轮齿421a沿所述传动主体41a的径向方向设置。在本申请一具体示例中,所述驱动轮齿421a与所述传动主体41a一体成型。在本申请另一具体示例中,所述驱动轮齿421a粘接固定于所述传动主体41a,本申请对此不做限制。
值得一提的是,在本申请实施例中,所述驱动轮齿421a与至少二所述从动轮齿31221a相互啮合,以将所述传动机构40a的转动传递至所述叶片组件30a,进而带动所述叶片轴套312a转动实现所述叶片主体311a的开合。在本申请中,所述从动轮齿31221a的数量为N,所述驱动轮齿421a的数量为M,二者的关系为:M≥N-1。在本申请一具体示例中,所述从动轮齿31221a的数量为4个,所述驱动轮齿421a的数量大于等于3个即可。
具体地,在本申请实施例中,所述限位挡板组43a包括第一限位挡板431a和第二限位挡板432a,所述第一限位挡板431a和所述第二限位挡板432a自所述传动主体41a的内缘向内延伸,所述第一限位挡板431a和所述第二限位挡板432a沿所述传动主体41a的径向方向设置。进一步地,所述限位挡板组43a的数量为至少一个,所述第一限位挡板431a与所述第二限位挡板432a形成所述限位槽433a,所述限位槽433a的开口朝向轴线O。在本申请的一具体示例中,所述基底12a的所述限位凸起1231a自下向上置于所述限位槽433a内,在所述传动机构40a相对于驱动壳体的所述基底12a旋转移动时,所述第一限位挡板431a和所述第二限位挡板432a会与所述基底12a的所述限位凸起1231a发生碰撞,以对所述传动机构40a的旋转角度进行限制。进一步地,所述第一限位挡板431a和所述第二限位挡板432a沿径向方向的长度大于等于所述限位凸起1231a沿径向方向的长度,以避免所述第一限位挡板431a和所述第二限位挡板432a可以冲出所述限位凸起1231a的限制。具体的,沿轴线O的一侧看其表面,所述第一限位挡板431a、所述第二限位挡板432a与轴线O形成一θ角,在本申请一具体示例中θ角为3°。也就是说,所述传动机构40a可旋转的角度为3°,当所述传动机构40a旋转3°后,所述第一限位挡板431a或所述第二限位挡板432a会与所述基底12a的所述限位凸起1231a碰撞,以阻止所述传动机 构40a的进一步旋转。
更具体地,在本申请实施例中,所述驱动齿42a与所述限位挡板组43a相邻设置,进一步地,所述限位挡板组43a设置于两所述驱动齿42a之间。进一步地,所述限位挡板组43a的数量小于等于所述驱动齿42a的数量。在本申请一具体示例中,所述限位挡板组43a的数量小于所述驱动齿42a的数量,所述限位挡板组43a设置于两所述驱动齿42a之间即可对所述传动机构40a的转动进行限位;在本申请的另一具体示例中,所述限位挡板组43a的数量等于所述驱动齿42a的数量,所述限位挡板组43a与所述驱动齿42a沿所述传动机构40a的载体主体周向依次交替设置,这种设置方式使得所述驱动齿42a也被设置于所述限位挡板组43a的所述限位槽433a内。例如,在本申请一具体示例中,所述限位挡板组43a包括第一组所述限位挡板组43a和第二组所述限位挡板组43a,所述基底12a的一个所述限位凸起1231a被设置于第一组所述限位挡板组43a内,所述基底12a的另一个所述限位凸起1231a被设置于第二组所述限位挡板组43a内,所述驱动齿42a被置于一个所述限位凸起1231a与另一个所述限位凸起1231a之间,即所述驱动齿42a被设置于第一组所述限位挡板组43a的所述第一限位挡板431a或所述第二限位挡板432a与第二组所述限位挡板组43a的所述第一限位挡板431a或所述第二限位挡板432a之间。
值得一提的是,在本申请实施例中,所述驱动齿42a的对应的弧度角大于所述限位槽433a对应的弧度角。所述传动机构40a在转动时,所述驱动轮齿421a与所述从动齿3122a相互啮合以使得所述叶片组件30a在所述传动机构40a的带动下转动,在这一过程中,所述叶片轴套312a的所述轴套主体3121a不会碰撞到所述第一限位挡板431a或所述第二限位挡板432a,以避免对所述叶片组件30a的转动产生干扰。
如图13所示,所述叶片组件30a设置于所述传动机构40a的内部,通过所述驱动轮齿421a与所述从动齿3122a之间的啮合以将所述叶片组件30a可活动的安置于所述传动机构40a的内侧。在本申请一具体示例中,所述传动机构40a可旋转的角度为3°,所述叶片组件30a在所述传动机构40a的带动下可旋转的角度为16.5°,这是由于所述传动机构40a绕轴线O旋转,所述叶片组件30a绕所述轴凸1232a旋转,所述传动机构40a旋转半径大于所述叶片组件30a的旋转半径,在所述传动机构40a旋转较小的角度时所述叶片组件30a会旋转相对较大的角度。
进一步地,在本申请实施例中,所述叶片组件30a的高度不超过所述传动机构40a的高度,以避免在可变光圈装置100a的旋转过程中,所述叶片组件30a的叶片与驱动壳体产生摩擦。进一步地,也可以避免增加可变光圈装置100a的高度,以满足摄像模组小型化的需求。
值得一提的是,在本申请实施例中,所述限位凸起1231a向上延伸设置于所述传动机构40a的所述限位挡板组43a内,当所述传动机构40a相对于所述基底12a转动时,所述限位凸起1231a与所述限位挡板组43a的所述第一限位挡板431a或所述第二限位挡板432a接触,以对所述传动机构40a的移动进行限位。进一步地,所述限位凸起1231a沿所述第二凸部123a的周向设置,并位于同一圆周上。所述轴凸1232a向上延伸设置于所述叶片轴套312a的定位孔内,当所述叶片组件30a相对于所述基底12a转动时,所述叶片轴套312a绕所述轴凸1232a转动。进一步地,所述轴凸1232a沿所述第二凸部123a的周向设置,并位于同一圆周上。在本申请一具体示例中,所述轴凸1232a位于所述限位凸起1231a的内侧,即所述轴凸1232a设置于更靠近轴线O的一侧,以与所述叶片组件30a设置于所述传动机构40a的内侧相适配。更进一步地,所述轴凸1232a的高度不高于所述限位凸起1231a的高度,即所述轴凸1232a的上表面低于所述限位凸起1231a的上表面,或者,所述轴凸1232a的上表面与所述限位凸起1231a的上表面持平,以避免可变光圈装置100a的高度增加。本申请一具体示例中,所述限位凸起1231a为四方体结构,所述轴凸1232a为圆柱,当然,所述限位凸起1231a与所述轴凸1232a也可以为其他形状,本申请对此不做限制。
具体地,在本申请一实施例中,所述叶片组件30a的所述叶片轴套312a通过所述轴凸1232a的定位安置于所述第二凸部123a的顶面,所述叶片组件30a的所述叶片主体311a安置于所述第一凸部122a的顶面,所述叶片轴套312a在所述传动机构40a的带动下绕轴线O旋转运动进而实现所述叶片主体311a的开合,在这一过程中,所述叶片轴套312a与所述第二凸部123a的顶面之间摩擦接触,所述叶片主体311a与所述第一凸部122a的顶面之间摩擦接触。因此,在本申请中,所述环状凹槽124a设置于所述第一凸部122a与所述第二凸部123a之间,所述环状凹槽124a的设置减小了所述第一凸部122a和所述第二凸部123a的顶面的面积,进而减小所述叶片元件31a与所述第一凸部122a和所述第二凸部123a之间的摩擦力。更进一步地,所述环状凹槽124a内设置捕尘胶,以使得进行可变光圈装置100a内的灰尘、颗粒等杂质落入捕尘胶上,避免灰尘、颗粒等杂质进入摄像模组。
具体地,在本申请一实施例中,所述基底12a进一步包括轨道125a,所述轨道125a设置于所述基底主体121a的所述第二凸部123a的外侧,所述轨道125a环绕于所述基底12a的开口,所述轨道125a与所述基底12a开口的圆心重合。进一步地,所述传动机构40a的外侧壁自所述传动主体41a一体向下延伸形成环状的延伸腿45a,所述传动机构40a的所述延伸腿45a被安置于所述基底12a的所述轨道125a内,以使得所述传动机构40a仅 能够在所述轨道125a内旋转运动,进而限制所述传动机构40a的平移或者倾斜。当然,在本申请其他示例中,也可以通过其他结构对实现上述功能。例如,在本申请一具体示例中,所述基底12a的顶面沿所述传动机构40a的最大外径周侧周向向上延伸多个所述限位柱126a,所述限位柱126a通过一体成型或粘接的方式固定于所述基底主体121a。所述传动机构40a的外侧壁与所述限位柱126a相接触,进而限制所述传动机构40a的平移或者倾斜。
可以理解的是,在本申请实施例中,所述传动机构40a与所述叶片组件30a设置于所述基底12a的上方,即所述传动机构40a与所述叶片组件30a通过所述基底12a进行支撑。所述驱动组件20a驱动所述传动机构40a相对于所述基底12a绕轴线O旋转运动,所述叶片组件30a设置于所述传动机构40a的内侧,并通过所述从动齿3122a和所述驱动轮齿421a的啮合,进而驱动所述叶片轴套312a转动,带动所述叶片主体311a开合,以实现光圈孔径变化。也可以说,所述传动机构40a为主动件,所述叶片组件30a为从动件,所述驱动组件20a驱动主动件转动,进而带动从动件转动。
如图15至图22所示,在本申请实施例中,所述驱动组件20a包括驱动构件21a和回复构件22a,其中所述驱动构件21a和所述回复构件22a的一端被固定于所述壳体10a,并且所述驱动构件21a和所述回复构件22a的另一端可传动地连接于所述传动机构40a,由所述驱动构件21a和所述回复构件22a驱动所述传动机构40a往复地移动。所述驱动构件21a和所述回复构件22a提供所述传动机构40a互为反向的驱动作用力。作为示例的,在本申请的该优选实施例中,所述驱动构件21a与所述传动机构40a相连,并由所述驱动构件21a驱动所述传动机构40a顺时针(逆时针)转动;所述回复构件22a与所述传动机构40a相连,并由所述回复构件22a驱动所述传动机构40a逆时针(顺时针)转动,以使得所述传动机构40a在所述驱动构件和所述回复构件22a的驱动作用下往复地转动。
所述驱动组件20a进一步包括至少一活动部件24a,其中所述至少一活动部件24a与所述传动机构40a相连,并且所述至少一活动部件24a被设置于所述传动构件40a的外侧,由所述活动部件24a带动所述传动机构40a运动。所述驱动组件20a的所述活动部件24a被可传动地连接于所述驱动构件21a和所述回复构件22a,由所述驱动构件21a和所述回复构件22a通过所述活动部件24a带动所述传动机构40a运动。值得一提的是,在本申请的该优选实施例中,所述活动部件24a被设置于所述传动机构40a的外侧,并与所述传动机构40a相连。
可以理解的是,在本申请的该优选实施例中,所述活动部件24a的数量可以为一、二或者多个。作为示例的,在本申请的该优选实施例中,所述活动部件24a的数量为一,其 中所述驱动组件20a的所述驱动构件21a和所述回复构件22a与所述活动部件24a相连,并且所述驱动构件21a和所述回复构件22a位于所述活动部件24a的相对侧,由所述驱动构件21a和所述回复构件22a对所述活动部件24a提供互为反向的驱动作用力。
可选地,在本申请的其他可选实施方式中,所述活动部件24a的数量为二,即所述驱动组件20a包括二活动部件24a。作为示例的,在本申请的该优选实施例中,所述二活动部件24a被相互间隔地设置于所述传动机构40a的外侧。作为优选地,所述二活动部件24a被对称地分布在所述传动机构40a的两侧,其中所述驱动构件21a与其中一个所述的活动部件24a连接,所述回复构件22a与另一所述的活动部件24a相连。可以理解的是,在本申请的该优选实施例中,所述驱动构件21a和所述回复构件22a被固定在所述壳体10a的两相对侧。可以理解的是,所述驱动构件21a和所述回复构件22a在所述壳体10a的相对侧为所述传动机构40a提供互为相反的驱动作用力,以驱动所述传动机构40a往复地转动。
本领域技术人员可以理解的是,在本申请的其他可选实施方式中,所述活动部件24a的数量在此仅仅作为示例性质的,而非限制。
所述驱动组件20a与所述传动机构40a相传动地连接,由所述驱动组件20a驱动所述传动机构40a往复地运动,借以所述传动机构40a带动与之相连的所述叶片组件30a运动。所述固定部23a包括第一固定部231a和第二固定部232a,所述固定部23a的所述第一固定部231a和所述第二固定部232a被固定于所述基底12a。所述驱动构件21a被可伸缩地设置在所述第一固定部231a和所述活动部件24a之间,所述回复构件22a被可伸缩地设置在所述第二固定部232a和所述活动部件24a之间。在初始状态下,所述活动部件24a被所述驱动构件21a和所述回复构件22a共同作用,处于力平衡状态。作为示例的,在本申请的该优选实施例中,所述驱动构件21a和所述回复构件22a处于相互牵引的拉伸状态,其中所述活动部件24a在所述驱动构件21a和所述回复构件22a相互牵引作用下保持平衡。因此,当所述驱动构件21a牵引所述活动部件24a移动时,所述回复构件22a被所述活动部件24a拉伸产生反向于所述驱动构件21a的作用力。
所述驱动构件21a进一步包括驱动构件牵引端212a和驱动构件固定端213a,其中所述驱动构件21a的所述驱动构件牵引端212a与所述活动部件24a相连,所述驱动构件固定端213a被固定于所述第一固定部231a。所述回复构件22a进一步包括回复构件牵引端222a和回复构件固定端223a,其中所述回复构件22a的所述回复构件牵引端222a与所述活动部件24a相连,所述回复构件固定端223a被固定于所述第二固定部232a。因此,在本申请的该优选实施例中,所述驱动构件21a的所述驱动构件牵引端212a和所述回复构 件22a的所述回复构件牵引端222a位于所述活动部件24a的相对侧,在平衡状态下,通过所述驱动构件21a的所述驱动构件牵引端212a和所述回复构件22a的所述回复构件牵引端222a为所述活动部件24a施加相互平衡的作用力。优选地,在本申请的该优选实施例中,所述驱动构件21a的所述驱动构件牵引端212a和所述回复构件22a的所述回复构件牵引端222a相背对背地设置在所述活动部件24a的相对侧,以通过所述驱动构件21a的所述驱动构件牵引端212a和所述回复构件22a的所述回复构件牵引端222a为所述活动部件24a施加反向且相互平衡的作用力。可以理解的是,在本申请中,所述活动部件24a的相对侧可以是所述活动部件的背向相对的两个侧面,或者呈对称分布的两个端面等。
在本申请中,所述传动机构40a进一步包括移动端44a,所述移动端44a自所述传动主体41a的外缘向外延伸,所述移动端44a可以一体成型于所述传动主体41a,或者粘接于所述传动主体41a。所述传动机构40a的所述移动端44a与所述驱动组件20a的所述活动部件24a固定连接,以通过所述活动部件24a带动所述传动机构40a旋转移动。在本申请中,所述驱动组件20a及所述传动机构40a均设置于所述壳体10a的所述基底12a,其中所述驱动组件20a通过所述固定部23a固定于所述基底12a,所述传动机构40a可活动地耦接于所述基底12a。所述传动机构40a连接于所述驱动组件20a的所述活动部件24a,所述传动机构40a能够在所述活动部件24a的带动下相对于所述基底12a转动。
在本申请一实施例中,所述驱动构件21a能够驱动所述活动部件24a进而带动所述传动机构40a相对于所述基底12a旋转运动。所述驱动构件21a可以为音圈马达、压电马达、SMA(形状记忆合金,Shape Memory Alloy)马达等类型的驱动马达。形状记忆合金是一种在加热升温后能完全消除其在较低的温度下发生的变形,恢复其变形前原始形状的合金材料。举例来说,当形状记忆合金在低于相变态温度下,受到一有限度的塑性变形后,可通过加热的方式,使其恢复到变形前的原始形状,其中,可以通过给SMA线通电实现SMA线加热。在本申请一具体示例中,所述驱动构件21a为SMA线,通电时产生的热量使得SMA线的温度升高,从而使SMA线产生收缩。在本申请一具体示例中,所述驱动构件21a为一直线状的SMA线。在本申请另一具体示例中,所述驱动构件21a为一螺旋状SMA线,螺旋状的SMA线可以增加其总长,可以增大其受热时的收缩量。在本申请另一实施例中,所述驱动构件21a为一具有至少一弯曲段的SMA线,可以增加SMA线的总长,也可以增加SMA线的活动行程。
在本申请实施例中,所述回复构件22a能够在驱动停止后带动所述活动部件24a进而带动所述传动机构40a回复原位。所述回复构件22a具有一定弹性。在本申请一具体示例中,所述回复构件22a为弹簧、弹片等弹性构件。在本申请另一具体示例中,所述回复构 件22a为SMA线,其结构可以与所述驱动构件21a的结构相同,也可以与所述驱动构件21a的结构不同。
优选地,所述驱动构件21a及所述回复构件22a的所述活动部件24a连接于所述传动机构40a,其中所述活动部件24a、所述驱动构件21a的至少一部分、所述回复构件22a的至少一部分位于同一直线上。也就是说,在本申请中,所述活动部件24a、所述驱动构件21a的至少一部分及所述回复构件22a的至少一部分设置于所述基底12a的同一侧边,且所述驱动构件21a的至少一部分、所述回复构件22a的至少一部分沿所述基底12a的该侧边所在的方向延伸。进一步地,所述驱动构件21a的至少一部分所在的直线与所述回复构件22a的至少一部分所在的直线相互重合,所述活动部件24a设置于所述驱动构件21a与所述回复构件22a之间,三者位于同一条直线上。
具体地,在本申请实施例中,所述第一固定部231a、所述第二固定部232a和所述活动部件24a设置于所述基底12a的相同一侧。例如,在本申请一具体示例中,所述第一固定部231a设置于所述基底12a的一角处,所述第二固定部232a设置于所述基底12a的相邻角处;或者所述第二固定部232a设置于所述基底12a的同一侧边处。在本申请另一具体示例中,所述第一固定部231a设置于所述基底12a的一侧边处,所述第二固定部232a设置于同一侧边处,或者所述第二固定部232a设置于该侧边的角处。所述活动部件24a设置于所述第一固定部231a与所述第二固定部232a之间,所述活动部件24a的一端连接于所述驱动构件21a的所述驱动构件牵引端212a,所述活动部件24a的另一端连接于所述回复构件22a的所述回复构件牵引端222a,所述驱动构件21a的所述驱动构件固定端213a连接于所述第一固定部231a,所述回复构件22a的所述回复构件固定端223a连接于所述第二固定部232a。也就是说,所述驱动构件21a与所述回复构件22a沿所述活动部件24a的两个相对侧相对地设置。在本申请一具体示例中,所述固定部23a与所述活动部件24a为夹持片,分别与所述驱动构件21a和所述回复构件22a夹持连接。在本申请另一具体示例中,所述固定部23a与所述活动部件24a为固定凸起,分别与所述驱动构件21a和所述回复构件22a绕制连接,本申请对此不做限制。
作为示例的,在本申请一个实施例中,所述驱动构件21a与所述回复构件22a沿同一方向同侧设置,即所述驱动构件21a与所述回复构件22a沿长度方向的直线与所述传动机构40a的外径相切。
如图22所示,在本申请一个实施例中,所述驱动构件21a为SMA线,所述回复构件22a为弹簧,所述驱动构件21a的所述驱动构件固定端213a连接于所述第一固定部231a,并通过所述第一固定部231a使得SMA线固定于所述基底12a,所述驱动构件21a的所述 驱动构件牵引端212a连接于所述活动部件24a,所述回复构件22a的所述回复构件固定端223a连接于所述第二固定部232a,并通过所述第二固定部232a使得所述回复构件22a固定于所述基底12a,所述回复构件22a的所述回复构件牵引端222a连接于所述活动部件24a。通电后,SMA线受热收缩,SMA线对所述传动机构40a提供一正向扭矩,以驱动所述传动机构40a旋转运动。具体的,SMA线产生沿直线方向的力驱动所述活动部件24a移动,由于与所述活动部件24a连接的所述传动机构40a的所述轴套连接端3123a被所述轨道125a限定为仅能绕轴线O进行旋转运动,因此所述活动部件24a在沿直线方向的力的驱动下产生旋转运动,进而带动所述传动机构40a旋转运动。
换句话说,在SMA线收缩后,弹簧被拉伸,SMA线的线段长度减小,弹簧的线段长度伸长,SMA线沿长度方向的直线与弹簧沿长度方向的直线不重合,且呈一定角度。当停止通电或减小通电电流后,弹簧对所述传动机构40a提供一与该正向力矩相反的反向扭矩,以驱动所述传动机构40a反向旋转以回复到初始位置。在本申请中,在初始状态下,SMA线连接所述活动部件24a的端点与所述传动机构40a的中心的连线与所述传动机构40a的外侧壁的交点为A;通电后,SMA线受热收缩,驱动所述传动机构40a旋转,SMA线连接所述活动部件24a的端点与所述传动机构40a的中心的连线与所述传动机构40a的外侧壁的交点为B;A、B与圆心连线所形成的角度为所述传动机构40a的旋转角度θ。
如图20A至图21B所示,在本申请另一个实施例中,所述驱动构件21a为第一SMA线211a,所述回复构件22a为第二SMA线221a,所述第一SMA线211a的一端连接于所述第一固定部231a,并通过所述第一固定部231a使得所述第一SMA线211a固定于所述基底12a。所述第一SMA线211a的另一端连接于所述活动部件24a,所述第二SMA线221a的一端连接于所述第二固定部232a,并通过所述第二固定部232a使得所述第二SMA线221a固定于所述基底12a,所述第二SMA线221a的另一端连接于所述活动部件24a。在初始状态下,所述第一SMA线211a与所述第二SMA线221a沿长度方向的直线互相重合。通电后,所述第一SMA线211a受热收缩,所述第一SMA线211a对所述传动机构40a提供一正向扭矩,以驱动所述传动机构40a旋转运动。具体的,所述第一SMA线211a产生沿直线方向的力驱动所述活动部件24a移动,由于与所述活动部件24a连接的所述传动机构40a的所述轴套连接端3123a被所述轨道125a限定为仅能绕轴线O进行旋转运动。因此所述活动部件24a在沿直线方向的力的驱动下产生旋转运动,进而带动所述传动机构40a旋转运动。换句话说,在所述第一SMA线211a收缩后,所述第二SMA线221a被拉伸,所述第一SMA线211a的线段长度减小,所述第二SMA线221a的线段长度伸长,所述第一SMA线211a沿长度方向的直线与所述第二SMA线221a沿长度方向的直线不重 合,且呈一定角度。停止对所述第一SMA线211a通电或减小对所述第一SMA线211a通电电流后,对所述第二SMA线221a通电,所述第二SMA线221a受热收缩,所述第二SMA线221a对所述传动机构40a提供一与该正向力矩相反的反向扭矩,以驱动所述传动机构40a反向旋转以回复到初始位置。
值得一提的是,在本申请实施例中,M>sinα*L,其中M为所述驱动构件21a的收缩量,α为所述传动机构40a旋转的角度,L为轴线O至所述驱动构件21a沿长度方向所在直线的距离。例如,在本申请一具体示例中,当所述传动机构40a旋转的角度α为0~3°,轴线O至所述驱动构件21a沿长度方向所在直线的距离L范围为4.6mm~6.6mm,所述驱动构件21a的收缩量M大于0.24mm,所述驱动构件21a的总长度为4.8mm~8mm。在本申请一具体示例中,所述传动机构40a的旋转角度α为3°,轴线O至所述驱动构件21a沿长度方向所在直线的距离L为5.4mm,所述驱动构件21a的收缩量M为大于0.3mm。在本申请一具体示例中,所述驱动构件21a为SMA线,所述回复构件22a为弹簧,所述驱动构件21a的收缩量M为大于0.28mm,所述驱动构件21a的总长度为5.6mm-9.3mm。在本申请中,所述驱动构件21a的收缩量M为所述驱动构件21a沿其所在直线方向的活动行程。
如图23A和图23B所示,在本申请另一个实施例中,所述驱动构件21a为具有弯折结构的SMA线,其中所述驱动构件21a包括至少一弯曲段214a和自所述弯曲段214a一体延伸的至少二直线段215a,其中所述驱动构件21a的所述驱动构件固定端213a和所述驱动构件牵引端212a位于所述驱动构件的所述直线段214a。
所述弯曲段214a连接于至少二所述直线段215a之间,所述驱动构件21a的所述弯曲段214a位于所述基底12a的一拐角处,所述驱动构件21a的至少二两所述直线段215a分别沿所述基底12a的互相垂直的两侧边所在的方向延伸。在本申请一具体示例中,所述基底12a的一拐角处设置有至少一绕线柱127a,所述绕线柱127a的数量与所述驱动构件21a所述弯曲段214a的数量相同,所述驱动构件21a的所述弯曲段214a与所述绕线柱127a相接触。可以理解的是,在本申请的该优选实施例中,所述驱动构件21a被穿插地绕于所述绕线柱127a,并在与所述绕线柱127a接触的位置形成所述弯曲段214a。
在本申请中,所述驱动构件21a的所述弯曲段214a的数量越多,所述驱动构件21a的总长度越长,当所述驱动构件21a受热收缩时产生的收缩量更大,所述驱动构件21a的活动行程更大。所述活动部件24a、所述驱动构件21a的至少一部分及所述回复构件22a的至少一部分设置于所述基底12a的同一侧边,所述第一固定部231a设置于所述基底12a的该边的相邻边或相对边,所述第二固定部232a设置于所述基底12a的该边的同一边或相 邻边,所述活动部件24a设置于所述第一固定部231a与所述第二固定部232a之间。这种设置方式可以增加所述驱动构件21a的总长度,以增大所述驱动构件21a的活动行程。
进一步地,在本申请实施例中,所述驱动构件21a设置于所述传动机构40a的侧部,也可以说所述驱动构件21a设置于所述基底12a的边缘,所述驱动构件21a的至少一部分沿长度方向所在的直线与所述基底12a的一侧边互相平行。进一步地,所述驱动构件21a靠近于所述基底12a的侧边,以为所述传动机构40a的安置提供足够的空间。由于所述驱动构件21a与所述传动机构40a沿水平方向的设置,所述传动机构40a的中心与可变光圈装置100a的中心不一致。
如图24A和图24B所示,在本申请另一个实施例中,所述驱动构件21a与所述回复构件22a设置于所述基底12a的相对侧,所述驱动构件21a与所述回复构件22a沿所述传动机构40a的周向延伸。在本申请一具体示例中,所述驱动构件21a与所述回复构件22a呈弧形结构,所述驱动构件21a所在的弧线与所述回复构件22a所在的弧线相对设置,所述固定部23a与所述活动部件24a均设置于所述驱动构件21a与所述回复构件22a之间。进一步地,所述驱动构件21a的所述驱动构件牵引端212a连接于所述活动部件24a,所述驱动构件21a的所述驱动构件固定端213a连接于所述第一固定部231a,所述回复构件22a的所述回复构件牵引端222a连接于所述活动部件24a,所述回复构件22a的所述回复构件固定端223a连接于所述第二固定部232a,所述活动部件24a设置于所述第一固定部231a与所述第二固定部232a之间。在本申请一具体示例中,所述第一固定部231a与所述第二固定部232a位于所述基底12a的同一侧边,所述活动部件24a位于所述基底12a上与所述第一固定部231a、所述第二固定部232a所在边相对的侧边。
在本申请另一具体示例中,所述第一固定部231a与所述第二固定部232a也可以设置于所述基底12a的不同侧边。例如,所述第一固定部231a与所述第二固定部232a设置所述基底12a的相对的侧边,所述活动部件24a设置于所述基底12a上与所述第一固定部231a、所述第二固定部232a所在边相邻的侧边。在本申请一具体示例中,所述固定部23a与所述活动部件24a为夹持片,分别与所述驱动构件21a和所述回复构件22a夹持连接。在本申请另一具体示例中,所述固定部23a与所述活动部件24a为固定凸起,分别与所述驱动构件21a和所述回复构件22a绕制连接,本申请对此不做限制。
具体地,在本申请一个实施例中,当所述驱动构件21a为SMA线,所述回复构件22a为弹簧,SMA线的一端连接于所述第一固定部231a,并通过所述第一固定部231a使得SMA线固定于所述基底12a,SMA线的另一端连接于所述活动部件24a,弹簧的一端连接于所述第二固定部232a,并通过所述第二固定部232a使得弹簧固定于所述基底12a,弹 簧的另一端连接于所述活动部件24a。在初始状态下,SMA线连接所述第一固定部231a的一端与弹簧连接所述第二固定部232a的一端的连线所在的直线,与SMA线连接所述活动部件24a的一端与弹簧连接所述活动部件24a的一端的连线所在的直线互相平行;通电后,SMA线受热收缩,SMA线对所述传动机构40a提供一正向扭矩,以驱动所述传动机构40a旋转运动。具体的,SMA线呈弧形结构,SMA通电后会产生弧形的收缩轨迹,进而带动所述活动部件24a旋转,进而带动所述传动机构40a旋转运动。换句话说,在SMA线收缩后,弹簧被拉伸,SMA线的弧线长度缩小,弹簧的弧线长度伸长;停止通电或减小通电电流后,弹簧对所述传动机构40a提供一与该正向力矩相反的反向扭矩,以驱动所述传动机构40a反向旋转以回复到初始位置。
具体地,在本申请另一个实施例中,所述驱动构件21a为第一SMA线211a,所述回复构件22a为第二SMA线221a,所述第一SMA线211a的一端连接于所述第一固定部231a,并通过所述第一固定部231a使得所述第一SMA线211a固定于所述基底12a,所述第一SMA线211a的另一端连接于所述活动部件24a,所述第二SMA线221a的一端连接于所述第二固定部232a,并通过所述第二固定部232a使得所述第二SMA线221a固定于所述基底12a,所述第二SMA线221a的另一端连接于所述活动部件24a。在初始状态下,所述第一SMA线211a连接所述第一固定部231a的一端与所述第二SMA线221a连接所述第二固定部232a的一端的连线所在的直线,与所述第一SMA线211a连接所述活动部件24a的一端与所述第二SMA线221a连接所述活动部件24a的一端的连线所在的直线互相平行。通电后,所述第一SMA线211a受热收缩,所述第一SMA线211a对所述传动机构40a提供一正向扭矩,以驱动所述传动机构40a旋转运动。具体的,所述第一SMA线211a呈弧形结构,第一SMA通电后会产生弧形的收缩轨迹,进而带动所述活动部件24a旋转,进而带动所述传动机构40a旋转运动。换句话说,在所述第一SMA线211a收缩后,所述第二SMA线221a被拉伸,所述第一SMA线211a的弧线长度缩小,所述第二SMA线221a的弧线长度伸长。停止对所述第一SMA线211a通电或减小对所述第一SMA线211a通电电流后,对所述第二SMA线221a通电,所述第二SMA线221a受热收缩,所述第二SMA线221a对所述传动机构40a提供一与该正向力矩相反的反向扭矩,以驱动所述传动机构40a反向旋转以回复到初始位置。值得一提的是,在本申请实施例中,所述驱动构件21a的收缩量为所述驱动构件21a沿其所在弧线方向的活动行程。优选地,在本申请的该优选实施例中,所述驱动构件21a和所述回复构件22a为螺旋状SMA线,并且所述驱动构件21a和所述回复构件22a被对称地设置在所述传动机构40a的两侧。
具体地,在本申请实施例中,所述驱动组件20a进一步包括第一导引机构25a和第二 导引机构26a,所述驱动构件21a和所述回复构件22a被置于所述第一导引机构25a和所述第二导引机构26a,通过所述第一导引机构25a和所述第二导引机构26a引导所述驱动构件21a和所述回复构件22a的伸缩。所述第一导引机构25a及所述第二导引机构26a的形状与所述驱动构件21a和所述回复构件22a的形状相适配。在本申请一具体示例中,所述驱动构件21a和所述回复构件22a呈长条形结构,所述第一导引机构25a和所述第二导引机构26a相应的呈长条形结构。本申请另一具体示例中,所述驱动构件21a和所述回复构件22a呈弧形结构,所述第一导引机构25a和所述第二导引机构26a相应的呈弧形结构。更进一步的,所述第一导引机构25a具有一第一导引面250a,所述第二导引机构26a具有一第二导引面260a,其中所述第一导引机构25a的所述第一导引面250a和所述第二导引机构26a的所述第二导引面260a呈现与所述驱动构件21a和所述回复构件22a相同的长条形或弧形结构。
优选地,在本申请的该优选实施例中,所述第一导引机构25a和所述第二导引机构26a呈现半环形且两端具有开口的管状结构,其中所述驱动构件21a被内置于所述第一导引机构25a内部,所述回复构件22a被内置于所述第二导引机构26a的内部。可选地,在本申请的该优选实施例中,所述第一导引机构25a和所述第二导引机构26a为具有内环面的半环形结构,其中所述第一导引机构25a的所述第一导引面250a和所述第二导引机构26a的所述第二导引面260a朝向所述传动机构40a的相反侧。
所述驱动构件21a置于所述第一导引机构25a内,所述回复构件22a置于所述第二导引机构26a内,所述第一导引机构25a的延伸方向与所述驱动构件21a的延伸方向相同,所述第二导引机构26a的延伸方向与所述回复构件22a的延伸方向相同,弧形结构的所述驱动构件21a与所述回复构件22a在收缩及拉伸的过程中会产生其他的运动方向,例如:沿弧形所在圆心方向移动。而所述第一导引机构25a及所述第二导引机构26a的设置可以将所述驱动构件21a和所述回复构件22a的收缩控制在所述第一导引机构25a和所述第二导引机构26a内,确保所述驱动构件21a与所述回复构件22a能够沿弧形轨迹移动。所述驱动构件21a设置成弧形结构,可以增加SMA线的总长,增大SMA线的受热收缩量,进而增大活动行程。不仅如此,所述第一导引机构25a和所述第二导引机构26a的设置还可以保护所述驱动构件21a和所述回复构件22a。在本申请一具体示例中,所述第一导引机构25a和所述第二导引机构26a为陶瓷材质,陶瓷材质具有一定的隔热效果,避免SMA通电产生的热量快速流失。
可选地,在本申请的其他可选实施方式中,所述第一导引机构25a被置于所述驱动构件21a内部,所述第二导引机构26a被置于所述回复构件22a内部,通过所述第一导引机 构25a支撑和引导所述驱动构件21a,所述第二导引机构26a支撑和引导所述回复机构22a。值得一提的是,所述驱动构件21a和所述回复构件22a呈螺旋转的半环形结构,其中所述第一导引机构25a和所述第二导引机构26a具有与所述驱动构件21a和所述回复构件22a相同的半环形支架结构。
如图11所示,在本申请实施例中,可变光圈装置100a进一步包括盖板50a,所述盖板50a设置于所述盖体11a与所述传动机构40a之间。在本申请一具体示例中,所述盖板50a被固定地设置于所述传动机构40a的顶面,这种设置方式使得设置于所述传动机构40a内的所述叶片组件30a被夹持地设置于所述盖板50a与所述基底12a之间,这种设置方式可以使得所述叶片组件30a在旋转过程中不会脱离所述轴凸1232a,进而脱离其原定的位置。进一步地,所述传动机构40a的表面在制造过程中会出现表面不平整的问题,所述盖板50a随所述传动机构40a的旋转而转动,减小了所述盖板50a与所述盖体11a之间的摩擦力。在本申请另一具体示例中,也可以仅将所述盖板50a夹持地设置于所述盖体11a与所述传动机构40a之间,本申请对此不做限制。
如图24A和图24B所示,在本申请实施例中,可变光圈装置100a进一步包括所述电连接元件60a,其中所述电连接元件60a被设置于所述壳体,并且所述电连接元件60a与所述驱动组件20a相电气连接。所述电连接元件60a包括安装于所述基底12a上的至少二所述接线端子61a,至少二所述接线端子61a设置于所述驱动组件20a的所述固定部23a所在一侧,并通过所述固定部23a电连接于所述驱动构件21a与所述回复构件22a。在本申请一具体示例中,至少二所述接线端子61a通过嵌件注塑的工艺与所述基底12a一体成型。进一步地,所述接线端子61a包括下端部和自下端部一体地延伸的上端部,其中,所述接线端子61a被嵌件注塑地固定在所述基底12a的固定部23a,并且所述接线端子61a的下端部部分地裸露,用于与摄像模组的其他通电元件电连接。所述接线端子61a的上端部的顶面裸露,所述固定部23a设置于所述接线端子61a上端部的顶面,并通过所述固定部23a与所述驱动构件21a和所述回复构件22a电连接。可以理解的是,在本申请中,所述固定部23a和所述活动部件24a为金属材质,所述驱动构件21a与所述回复构件22a能够通过所述固定部23a和所述活动部件24a实现电路导通。
示例性摄像模组
如图25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300a、被保持于感光组件300a的感光路径上的镜头组件200a和可变光圈装置100a。
所述镜头组件200a包括光学镜头210a以及驱动所述光学镜头210a移动的镜头驱动组件220a。所述光学镜头210a为一体式镜头,其包括镜筒2110a和容置于所述镜筒2110a 中的至少一镜片组2120a,所述至少一镜片组2120a中包括至少一光学镜片。所述镜头驱动组件220a包括镜头驱动可动部分、镜头驱动所述固定部分以及设置于所述镜头驱动可动部分和所述镜头驱动所述固定部分之间的镜头驱动元件,所述镜头驱动元件驱动所述镜头可动部分相对于所述镜头所述固定部分移动。所述光学镜头210a固定于所述镜头驱动组件220a的镜头可动部分并被所述镜头驱动组件220a驱动进行沿光轴方向的移动或者垂直于光轴方向的移动,进而实现摄像模组的自动对焦功能或者光学防抖功能。
在本申请的另一个实施例中,所述光学镜头210a为分体式镜头,其包括多个镜头部分,具体地,所述分体式镜头包括沿光轴设置的第一镜头部分和第二镜头部分,所述第二镜头部分包括第二镜筒以及安装于所述第二镜筒中的至少一第二镜片,所述第一镜头部件包括至少一第一镜片,在一些实施方式中,所述第一镜头部件进一步包括第一镜筒,所述至少一第一镜片容置于所述第一镜筒中。
所述感光组件300a包括芯片线路板310a及安装于所述芯片线路板310a上的感光芯片320a、电子元件330a、连接器340a、底座350a以及滤光元件360a。所述芯片线路板310a包括线路板主体、连接带以及连接器340a部分,所述连接带连接所述线路板主体和所述连接器340a部分并实现所述线路板主体和所述连接部器部分之间的电导通。所述感光芯片320a和所述电子元件330a电连接于所述线路板主体。
所述感光芯片320a用于接收所述镜头组件200a采集的外界光线成像并通过所述芯片线路板310a与便携式设备电连接。所述感光芯片320a包括感光区和非感光区,所述感光芯片320a通过位于非感光区的感光芯片320a焊盘电连接于所述芯片线路板310a,例如,所述感光芯片320a通过引线键合(打金线)、焊接、FC工艺(芯片倒装)或者RDL(再布线层技术)等方式电连接于所述芯片线路板310a的线路板主体。所述感光芯片320a适于通过黏合介质固定于所述线路板主体的正面(定义芯片线路板310a朝向镜头组件200a的表面为正面,芯片线路板310a与正面相反一侧即为芯片线路板310a的底面)。在本申请的一些实施例中,所述线路板主体中间具有凹槽或者通孔(线路板通孔),所述感光芯片320a安装固定于所述线路板主体的凹槽或者线路板通孔中,从而减少所述线路板主体的厚度对所述感光组件300a厚度的影响,降低摄像模组高度。
所述底座350a被设置于所述芯片线路板310a的线路板主体上,用于支撑其他部件。在本申请一个实施例中,所述底座350a被实施为单独成型的塑料支架,其通过黏合介质附着于所述线路板主体的表面,并用于支撑其他部件。当然,在本申请其他实施例中,所述底座350a还能以其他方式形成于所述线路板主体,例如,所述底座350a被实施为模塑底座350a,其通过模塑工艺一体成型于所述线路板主体的预设位置,对此,并不为本 申请所局限。
在本申请的一个实施例中,所述滤光元件360a被保持于所述感光芯片320a的感光路径上,用于对进入所述感光芯片320a的成像光线进行过滤。在本申请一个具体实施例中,所述滤光元件360a被安装于所述底座350a上且对应于所述感光芯片320a的至少感光区域。值得一提的是,在本申请其他示例中,所述滤光元件360a可通过其他支撑件被间接地安装于所述底座350a上。并且,在本申请的其他实施例中,所述滤光元件360a还能够被安装于所述摄像模组的其他位置,例如,所述滤光元件360a形成于所述光学镜头210a内(例如,作为一层滤光膜附着于所述光学镜头210a的某片光学镜片的表面),对此,并不为本申请所局限。
在本申请的一个实施例中,所述感光组件300a进一步包括芯片驱动组件(附图未示出),所述芯片驱动组件适于驱动所述感光组件300a的感光芯片320a平移、旋转或者倾斜,进而实现摄像模组的芯片防抖功能。
所述可变光圈装置100a安装于所述光学镜头210a的顶面或者中间。在本申请的一个实施例中,所述可变光圈装置100a安装于所述光学镜头210a的顶面,并且所述可变光圈装置100a与所述光学镜头210a相固定。具体地,所述可变光圈装置100a的所述基底12a通过黏合介质粘接于所述光学镜头210a的镜筒2110a,所述光学镜头210a的至少一部分伸入所述可变光圈装置100a的壳体通孔内。所述可变光圈装置100a的光圈驱动线路板与所述镜头驱动组件220a电连接,在本申请的一个实施例中,所述可变光圈的驱动线路板与所述镜头驱动组件220a的用于复位所述传动机构40a的弹片电连接。
在本申请的另一个实施例中,所述光学镜头210a为分体式镜头时,所述可变光圈装置100a可以设置于所述光学镜头210a的中间。具体地,所述第二镜头部分安装固定于所述镜头驱动组件220a,所述第一镜头部分安装固定于所述可变光圈装置100a的顶面,所述可变光圈装置100a进一步安装固定于所述光学镜头210a的镜筒2110a,进而所述第一镜头部分和所述第二镜头部分沿所述光学镜头210a的光轴布设。
本领域的技术人员应理解,上述描述及附图中所示的本发明的实施例只作为举例而并不限制本发明。本发明的目的已经完整并有效地实现。本发明的功能及结构原理已在实施例中展示和说明,在没有背离所述原理下,本发明的实施方式可以有任何变形或修改。

Claims (61)

  1. 可变光圈装置,其特征在于,包括:
    壳体,所述壳体包括基底;
    驱动机构,所述驱动机构被设置于所述壳体;
    传动机构,所述传动机构被夹设于所述驱动机构和所述基底之间,所述传动机构与所述驱动机构相传动地连接;以及
    叶片组件,所述叶片组件被可旋转地设置于所述基底,并与所述传动机构相传动地连接,其中所述驱动机构驱动所述传动机构,并由所述传动机构带动所述叶片组件,以形成一孔径可变的叶片通孔。
  2. 根据权利要求1所述的可变光圈装置,其中所述驱动机构包括压电组件和电连接于所述压电组件的驱动线路板,其中所述压电组件与所述传动机构相接触,并由所述驱动机构的所述压电组件以摩擦力驱动所述传动机构旋转。
  3. 根据权利要求2所述的可变光圈装置,其中所述压电组件包括压电元件以及固定于所述压电元件的底面的摩擦驱动部,所述驱动机构通过所述摩擦驱动部与所述传动机构的顶面摩擦接触,其中所述压电元件为环形压电元件。
  4. 根据权利要求2所述的可变光圈装置,其中所述压电组件包括压电元件以及固定于所述压电元件的底面的摩擦驱动部,所述驱动机构通过所述摩擦驱动部与所述传动机构的顶面摩擦接触,其中所述压电元件为直线压电元件。
  5. 根据权利要求1至4任一所述的可变光圈装置,其中所述传动机构包括传动主体和摩擦构件,其中所述摩擦构件与所述传动主体相固定连接,并且所述摩擦构件与所述驱动机构相接触。
  6. 根据权利要求4或5所述的可变光圈装置,其中所述摩擦构件覆盖所述传动主体,所述摩擦构件的单侧宽度大于所述传动主体在横向方向的单侧宽度,并且所述摩擦构件自所述传动主体的上方向内延伸至所述叶片组件。
  7. 根据权利要求2至6任一所述的可变光圈装置,其中所述传动机构进一步包括三或以上驱动齿,其中所述驱动齿被一体地形成于所述传动主体的内侧,其中所述叶片组件与所述传动机构的所述三或以上驱动齿相啮合连接。
  8. 根据权利要求1至7任一所述的可变光圈装置,其中所述叶片组件包括三或以上叶片元件,所述三或以上叶片元件沿同一方向合围,并形成所述叶片通孔。
  9. 根据权利要求8所述的可变光圈装置,其中各叶片元件包括叶片主体和与所述叶 片主体相连且支撑所述叶片主体转动的轴套,其中所述轴套被可轴转地设置于所述基底,并且与所述传动机构相连接,由所述传动机构驱动各所述叶片元件轴向地转动,以调整所述叶片通孔的孔径大小。
  10. 根据权利要求9所述的可变光圈装置,其中所述轴套包括轴套主体和一体成型于所述轴套主体的从动齿,其中各所述叶片元件的所述从动齿与所述传动机构的所述驱动齿相啮合连接。
  11. 根据权利要求1至10任一所述的可变光圈装置,其中所述壳体进一步包括上盖,所述上盖与所述基底对位设置,其中所述驱动机构、所述传动机构以及所述叶片组件被保持在所述上盖和所述基底形成的一容置空间,并通过所述上盖和所述基底之间的距离调整所述驱动机构和所述传动机构之间的压力。
  12. 根据权利要求11所述的可变光圈装置,其中所述壳体进一步设有壳体通孔和一结构缝隙,所述壳体的所述结构缝隙连通所述壳体的所述壳体通孔和所述壳体的所述容置空间,允许所述叶片组件自所述结构缝隙伸出至所述壳体通孔,其中所述壳体和所述结构缝隙被形成于所述上盖和所述基底之间。
  13. 根据权利要求8至10任一所述的可变光圈装置,其中所述基底包括基底主体以及从所述基底主体向所述叶片组件方向延伸的至少一第一凸部和至少一第二凸部,所述第一凸部位于所述第二凸部的内侧,所述第一凸部和所述第二凸部通过一体成型的方式固定于所述基底主体,其中各所述叶片元件被支撑在所述基底的所述第一凸部和所述第二凸部。
  14. 根据权利要求13所述的可变光圈装置,其中所述第一凸部与所述第二凸部之间形成一环状凹槽。
  15. 根据权利要求13或14所述的可变光圈装置,其中所述第二凸部进一步包括三或以上限位凸起,所述叶片组件的各所述叶片单元被可轴转地支撑于各所述限位凸起。
  16. 根据权利要求13至15任一所述的可变光圈装置,其中所述第二凸部进一步包括一或以上限位凸起,所述传动机构的各限位挡板包括第一限位挡板和第二限位挡板,并且所述第一限位挡板和所述第二限位挡板之间形成所述限位挡板的限位区域,所述基底的所述限位凸起的至少一部分伸入所述限位挡板的限位区域。
  17. 根据权利要求1至16任一所述的可变光圈装置,进一步包括被设置于所述基底的顶面的支撑组件,所述传动机构被支撑在所述基底的所述支撑组件的上方,并且所述传动机构被夹设于所述基底的所述支撑组件和所述驱动机构。
  18. 根据权利要求16所述的可变光圈装置,其中所述支撑组件进一步包括多个滑块, 所述滑块为凸起的半球状结构。
  19. 根据权利要求1至18任一所述的可变光圈装置,其中所述基底进一步包括从所述基底主体向所述叶片组件方向延伸的至少三限位柱,所述至少三限位柱与所述传动机构的外侧壁相接触,进而限制所述传动机构的平移或者倾斜。
  20. 一摄像模组,其特征在于,包括:
    感光组件;
    镜头组件,其中所述镜头组件被保持于感光组件的感光路径;以及
    如权利要求1至19任一所述的可变光圈装置,其中所述可变光圈装置位于所述镜头组件的入光侧。
  21. 可变光圈装置,其特征在于,包括:
    壳体;
    叶片组件;
    传动机构,其中所述传动机构被可旋转地设置于所述壳体,与所述叶片组件相啮合,通过所述传动机构带动所述叶片组件,以形成孔径可变的通光孔;以及
    驱动组件,所述驱动组件进一步包括驱动构件和回复构件,其中所述驱动构件和所述回复构件被固定于所述壳体,并且可传动地连接于所述传动机构,其中所述驱动构件可提供驱动所述传动机构转动的作用力,所述回复构件提供反向转动的作用力,以通过所述驱动构件和所述回复机构驱动所述传动机构往复地转动。
  22. 根据权利要求21所述的可变光圈装置,进一步包括至少一活动部件,其中所述至少一活动部件与所述传动机构相连,所述驱动组件的所述驱动构件和所述回复构件被可伸缩地连接于所述至少一活动部件。
  23. 根据权利要求22所述的可变光圈装置,其中所述驱动构件进一步包括驱动构件牵引端和驱动构件固定端,所述回复构件进一步包括回复构件牵引端和回复构件固定端,所述驱动构件固定端和所述回复构件固定端被固定于所述壳体,所述活动部件被可传动地连接于所述驱动构件牵引端和所述回复构件牵引端,并且所述驱动构件牵引端和所述回复构件牵引端位于所述活动部件的相对侧,由所述驱动构件和所述回复构件通过所述活动部件驱动所述传动机构往复地转动。
  24. 根据权利要求23所述的可变光圈装置,其中所述驱动构件和所述回复构件被固定于所述壳体的同侧,且所述驱动构件牵引端、所述回复构件牵引端以及所述活动部件处于同一直线。
  25. 根据权利要求23所述的可变光圈装置,其中所述驱动构件的所述驱动构件固定 端和所述回复构件固定端被固定于所述壳体的相邻侧。
  26. 根据权利要求23至25任一所述的可变光圈装置,进一步包括一固定部,其中所述固定部被固定于所述壳体,所述驱动构件固定端和所述回复构件固定端被所述固定部固定于所述壳体。
  27. 根据权利要求26所述的可变光圈装置,其中所述固定部包括第一固定部和第二固定部,其中所述驱动构件被可伸缩地设置在所述第一固定部和所述活动部件之间,所述回复构件被可伸缩地设置在所述第二固定部和所述活动部件之间。
  28. 根据权利要求24所述的可变光圈装置,其中所述驱动构件为直线状的SMA线。
  29. 根据权利要求25所述的可变光圈装置,其中所述驱动构件进一步包括一所述驱动构件包括至少一弯曲段和自所述弯曲段一体延伸的至少二直线段。
  30. 根据权利要求24所述的可变光圈装置,其中所述驱动构件为螺旋状SMA线。
  31. 根据权利要求28至30任一所述的可变光圈装置,其中所述回复构件从由弹簧和弹片组成的弹性元件组合中选择。
  32. 根据权利要求28至30任一所述的可变光圈装置,其中所述回复构件为SMA线。
  33. 根据权利要求28至30任一所述的可变光圈装置,其中M为所述驱动构件的收缩量,α为所述传动机构旋转的角度,L为轴线O至所述驱动构件沿长度方向所在直线的距离,M>sinα*L。
  34. 根据权利要求29所述的可变光圈装置,其中所述壳体包括基底和扣合于所述基底的盖体,其中所述基底进一步包括基底主体和被设置于所述基底主体的至少一绕线柱,所述至少一绕线柱被一体地成型于所述基底主体,并且所述弯曲段与所述绕线柱相接触,所述驱动构件的所述二直线段位于所述基底的相邻侧。
  35. 根据权利要求28至30任一所述的可变光圈装置,其中所述传动机构包括传动主体和被设置于所述传动主体的移动端,其中所述移动端自所述传动主体的外侧一体地向外延伸,所述移动端与所述活动部件相传动地连接。
  36. 根据权利要求21至35任一所述的可变光圈装置,其中所述叶片组件包括多个叶片元件,其中各所述叶片元件包括叶片主体和叶片轴套,其中所述叶片主体与所述叶片轴套相连,其中所述传动机构包括传动主体和多个驱动齿,其中所述传动主体呈环状结构,所述多个驱动齿被设置于所述传动主体的内侧,其中所述叶片轴套与所述传动机构的所述驱动齿相啮合。
  37. 根据权利要求36所述的可变光圈装置,其中所述壳体包括盖体和基底,其中,所述基底与所述盖体之间能够相互扣合,并形成一收容腔,收容腔用于容置所述驱动组 件、所述叶片组件以及所述传动机构,其中所述基底包括基底主体和被形成于所述基底主体的第一凸部和第二凸部,以及形成于所述第一凸部和所述第二凸部的环状凹槽,其中所述第二凸部包括限位凸起和多个轴凸,所述叶片轴套被所述第二凸部的所述轴凸限制,所述传动机构包括至少一限位挡板组,各所述限位挡板组包括第一限位挡板和第二限位挡板,所述第一限位挡板与所述第二限位挡板形成所述限位槽,所述限位凸起位于所述限位挡板组的所述限位槽。
  38. 根据权利要求37所述的可变光圈装置,进一步包括盖板,所述盖板设置于所述盖体与所述传动机构之间。
  39. 根据权利要求11至38任一所述的可变光圈装置,进一步包括一电连接元件,其中所述电连接元件被设置于所述壳体,所述电连接元件与所述驱动组件相电气连接。
  40. 一摄像模组,其特征在于,包括:
    感光组件;
    被保持在所述感光组件的感光路径的镜头组件;以及
    如权利要求21至39任一所述的可变光圈装置,其中所述可变光圈装置被设置于所述镜头组件的入光侧。
  41. 可变光圈装置,其特征在于,包括:
    壳体;
    叶片组件;
    传动机构,其中所述传动机构被可旋转地设置于所述壳体,与所述叶片组件相传动地连接,通过所述传动机构带动所述叶片组件,以形成孔径可变的通光孔;以及
    驱动组件,所述驱动组件进一步包括驱动构件、回复构件、第一导引机构以及第二导引机构,其中所述驱动构件被设置于所述第一导引机构,所述回复构件被设置于所述第二导引机构,所述驱动构件被所述第一导引机构支撑可伸缩地运动,所述回复机构被所述第二导引机构支撑可伸缩地运动,其中所述驱动构件和所述回复构件被可传动地连接于所述传动机构,以通过所述驱动构件和所述回复机构驱动所述传动机构往复地转动。
  42. 根据权利要求41所述的可变光圈装置,其中所述第一导引机构和所述第二导引机构为内部中空的管状结构,其中所述驱动构件被内置于所述第一导引机构,所述回复构件被内置于所述第二导引机构。
  43. 根据权利要求41所述的可变光圈装置,其中所述第一导引机构和所述第二导引机构为支撑杆结构,其中所述第一导引机构置于所述驱动构件,所述第二导引机构置于所述回复构件。
  44. 根据权利要求42或43所述的可变光圈装置,其中所述第一导引机构和所述第二导引机构呈长条形结构,并且所述第一导引机构和所述第二导引机构位于所述壳体的同侧。
  45. 根据权利要求42或43所述的可变光圈装置,其中所述第一导引机构和所述第二导引机构呈弧形结构。
  46. 根据权利要求45所述的可变光圈装置,其中所述第一导引机构和所述第二导引机构相对于传动机构被对称地设置于所述传动机构周向外侧。
  47. 根据权利要求42或43所述的可变光圈装置,进一步包括至少一活动部件,其中所述至少一活动部件与所述传动机构相连,所述驱动组件的所述驱动构件和所述回复构件被可伸缩地连接于所述至少一活动部件。
  48. 根据权利要求47所述的可变光圈装置,其中所述驱动构件进一步包括驱动构件牵引端和驱动构件固定端,所述回复构件进一步包括回复构件牵引端和回复构件固定端,所述驱动构件固定端和所述回复构件固定端被固定于所述壳体,所述活动部件被可传动地连接于所述驱动构件牵引端和所述回复构件牵引端,并且所述驱动构件牵引端和所述回复构件牵引端位于所述活动部件的相对侧,由所述驱动构件和所述回复构件通过所述活动部件驱动所述传动机构往复地转动。
  49. 根据权利要求48所述的可变光圈装置,其中所述驱动构件和所述回复构件被固定于所述壳体的同侧,且所述驱动构件牵引端、所述回复构件牵引端以及所述活动部件处于同一直线。
  50. 根据权利要求47或48所述的可变光圈装置,进一步包括一固定部,其中所述固定部被固定于所述壳体,所述驱动构件固定端和所述回复构件固定端被所述固定部固定于所述壳体。
  51. 根据权利要求50所述的可变光圈装置,其中所述固定部包括第一固定部和第二固定部,其中所述驱动构件被可伸缩地设置在所述第一固定部和所述活动部件之间,所述回复构件被可伸缩地设置在所述第二固定部和所述活动部件之间。
  52. 根据权利要求41至51任一所述的可变光圈装置,其中所述驱动构件选自由直线状的SMA线、长条形的螺旋状SMA线以及弧形的螺旋转SMA线组成的组合。
  53. 根据权利要求41至52任一所述的可变光圈装置,其中所述回复构件从由弹簧和弹片组成的弹性元件组合中选择。
  54. 根据权利要求41至52任一所述的可变光圈装置,其中所述回复构件从直线状的SMA线、长条形的螺旋状SMA线以及弧形的螺旋转SMA线组成的组合中选择。
  55. 根据权利要求52所述的可变光圈装置,其中M为所述驱动构件的收缩量,α为所述传动机构旋转的角度,L为轴线O至所述驱动构件沿长度方向所在直线的距离,M>sinα*L。
  56. 根据权利要求47至55任一所述的可变光圈装置,其中所述传动机构包括传动主体和被设置于所述传动主体的移动端,其中所述移动端自所述传动主体的外侧一体地向外延伸,所述移动端与所述活动部件相传动地连接。
  57. 根据权利要求41至56任一所述的可变光圈装置,其中所述叶片组件包括多个叶片元件,其中各所述叶片元件包括叶片主体和叶片轴套,其中所述叶片主体与所述叶片轴套相连,各所述叶片元件的所述叶片轴套与所述传动机构相啮合。
  58. 根据权利要求57所述的可变光圈装置,其中所述壳体包括盖体和基底,其中,所述基底与所述盖体之间能够相互扣合,并形成一收容腔,收容腔用于容置所述驱动组件、所述叶片组件以及所述传动机构,其中所述基底包括基底主体和被形成于所述基底主体的第一凸部和第二凸部,以及形成于所述第一凸部和所述第二凸部的环状凹槽,其中所述第二凸部包括限位凸起和多个轴凸,所述叶片轴套被所述第二凸部的所述轴凸限制,所述传动机构包括至少一限位挡板组,各所述限位挡板组包括第一限位挡板和第二限位挡板,所述第一限位挡板与所述第二限位挡板形成所述限位槽,所述限位凸起位于所述限位挡板组的所述限位槽。
  59. 根据权利要求58所述的可变光圈装置,进一步包括盖板,所述盖板设置于所述盖体与所述传动机构之间。
  60. 根据权利要求41至59任一所述的可变光圈装置,进一步包括一电连接元件,其中所述电连接元件被设置于所述壳体,所述电连接元件与所述驱动组件相电气连接。
  61. 摄像模组,其特征在于,包括:
    感光组件;
    被保持在所述感光组件的感光路径的镜头组件;以及
    如权利要求41至60任一所述的可变光圈装置,其中所述可变光圈装置被设置于所述镜头组件的入光侧。
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US4491401A (en) * 1983-01-17 1985-01-01 Canon Kabushiki Kaisha Diaphragm device
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CN108254994A (zh) * 2018-03-29 2018-07-06 深圳市星河泉新材料有限公司五金配件分厂 一种光圈自动调节结构及调节方法
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