WO2020050650A1 - 카메라 모듈 - Google Patents
카메라 모듈 Download PDFInfo
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- WO2020050650A1 WO2020050650A1 PCT/KR2019/011484 KR2019011484W WO2020050650A1 WO 2020050650 A1 WO2020050650 A1 WO 2020050650A1 KR 2019011484 W KR2019011484 W KR 2019011484W WO 2020050650 A1 WO2020050650 A1 WO 2020050650A1
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- round surface
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- camera module
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Images
Classifications
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- G03B—APPARATUS 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
- G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B5/06—Swinging lens about normal to the optical axis
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS 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
- G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B5/04—Vertical adjustment of lens; Rising fronts
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- G—PHYSICS
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- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/64—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
- G02B27/646—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/023—Mountings, adjusting means, or light-tight connections, for optical elements for lenses permitting adjustment
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS 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
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
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- G—PHYSICS
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- G03B3/10—Power-operated focusing
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- G—PHYSICS
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- G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
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- G—PHYSICS
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- G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
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- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
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- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
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- H04N23/6812—Motion detection based on additional sensors, e.g. acceleration sensors
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- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
- H04N23/682—Vibration or motion blur correction
- H04N23/685—Vibration or motion blur correction performed by mechanical compensation
- H04N23/687—Vibration or motion blur correction performed by mechanical compensation by shifting the lens or sensor position
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- G—PHYSICS
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- G03B—APPARATUS 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
- G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B2205/0007—Movement of one or more optical elements for control of motion blur
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS 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
- G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B2205/0007—Movement of one or more optical elements for control of motion blur
- G03B2205/0023—Movement of one or more optical elements for control of motion blur by tilting or inclining one or more optical elements with respect to the optical axis
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS 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
- G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B2205/0053—Driving means for the movement of one or more optical element
Definitions
- the embodiment relates to a camera driving device and a camera module including the same.
- the camera module performs a function of photographing a subject and storing it as an image or video, and is mounted on a mobile terminal such as a mobile phone, a laptop, a drone, and a vehicle.
- portable devices such as smartphones, tablet PCs, and laptops have a built-in miniature camera module, which automatically adjusts the distance between the image sensor and the lens to automatically align the focal length of the lens (Auto-Focus, AF) function.
- recent camera modules perform a zooming function of zooming up or zooming out by increasing or decreasing the magnification of a distant subject through a zoom lens. You can.
- a camera module employs an image stabilization (IS) technology, and a technique for correcting or preventing image stabilization due to camera movement due to an unstable fixing device or a user's movement has been adopted.
- IS technologies include optical image stabilizer (OIS) technology and image stabilization technology using image sensors.
- OIS technology is a technology that corrects motion by changing the path of light
- image stabilization technology is a technology that corrects motion by a mechanical method and an electronic method, and more OIS technology is adopted.
- the higher the resolution of the image sensor becomes the smaller the size of the pixels is, the smaller the number of pixels, the less the amount of light received at the same time. Therefore, in a high-resolution camera, in a dark environment, the shutter speed becomes slower, and the shaking of the image due to camera shake appears more severely.
- the OIS function has recently been essentially adopted to photograph a deformed image using a high-pixel camera at a dark night or in particular in a video.
- OIS technology is a method of correcting the image quality by correcting the optical path by moving the lens or image sensor of the camera.
- OIS technology detects the movement of the camera through the gyro sensor and uses the lens or image The distance that the image sensor should move is calculated.
- the OIS correction method includes a lens shift method and a lens tilting method.
- FIG. 1A is a conceptual diagram of OIS through a lens movement method in a conventional camera module
- FIG. 1B is a conceptual diagram of OIS through a lens tilt method in a conventional camera module.
- the distance between the lens and the image sensor changes and the spatial resolution (SFR) value as the optical axis is repeatedly displaced from Z1 to Z2 according to the tilting of the lens.
- SFR spatial resolution
- the OIS technology of the prior art requires a mechanical driving device for lens movement, etc., so the structure is complicated, and since a driving element or a gyro sensor must be mounted, there is a limit to realizing a compact camera module.
- the embodiment is intended to provide a camera module and a camera module driving device capable of providing an excellent OIS function without distortion of an image even when a video is taken.
- the embodiment is to solve the above-described technical problems and at the same time to provide a compact camera module.
- the camera module includes a lens module, a first bracket, and a second bracket including a first bracket moving in combination with the lens module and a second round surface corresponding to the first round surface. And a ball bearing disposed between the first round surface of the first bracket and the second round surface of the second bracket, and a driving unit disposed between the lens module and the second bracket.
- the width and height of the second round surface of the second bracket may be greater than the width and height of the first round surface of the first bracket.
- the camera module includes a lens module, a first round surface, and a second bracket including a first bracket that moves in combination with the lens module and a second round surface corresponding to the first round surface. It may include a ball bearing disposed between the first round surface of the bracket and the first bracket and the second round surface of the second bracket, and a driving unit disposed between the lens module and the second bracket.
- the first round surface of the first bracket may include at least two first unit round surfaces, and the two first unit round surfaces may be disposed on opposite sides of the lens module.
- the second round surface of the second bracket may include at least two second unit round surfaces, and each of the at least two second unit round surfaces may be disposed to correspond to each of the at least two first unit round surfaces. have.
- the camera module includes a lens module, a first round surface, and a second bracket including a first bracket that moves in combination with the lens module and a second round surface corresponding to the first round surface. It may include a bracket, a ball bearing disposed between the first round surface of the first bracket and the second round surface of the second bracket, and a driving unit disposed between the lens module and the second bracket.
- the lens module rotates along the second round surface with respect to the optical axis, and the lens module may be driven up and down with respect to the optical axis along the second round surface.
- the ball bearing may move along the first round surface and the second round surface so that the lens module rotates about an optical axis.
- the ball bearing may move along the first round surface and the second round surface such that the lens module is tilted based on a virtual plane perpendicular to the optical axis.
- the first round surface may be disposed on the outer surface of the first bracket.
- the second round surface may be disposed on the inner surface of the second bracket.
- the upper end of the first bracket may be disposed lower than the upper end of the second bracket.
- the first bracket includes a first recess area formed on an inner surface of the first bracket and disposed at a position corresponding to the first round surface, and the second bracket is formed on an outer surface of the second bracket It may include a second recessed area disposed at a position corresponding to the second round area.
- the embodiment is further disposed on the lower side of the second bracket and further includes a circuit board for controlling the driving unit, the circuit board includes a rigid circuit board and a flexible circuit board, and a part of the flexible circuit board includes the second bracket It may be disposed in the second recess area.
- the first bracket includes a ball accommodating portion on which the ball bearing is disposed, and the ball accommodating portion may be disposed at a position corresponding to the first recess area.
- the driving unit may include a first driving unit generating electromagnetic force in the optical axis direction and a second driving unit generating electromagnetic force in a direction perpendicular to the optical axis direction.
- the first driving part includes a first coil part coupled to the first bracket and a first magnet part coupled to the second bracket
- the second driving part includes a second coil part coupled to the first bracket and the first 2 may include a second magnet portion coupled to the bracket.
- the first bracket may include a ball receiving portion on which the ball bearing is disposed.
- the camera module according to the embodiment, the lens module; A first bracket for supporting and driving the lens module; A second bracket accommodating the first bracket; A ball disposed between the first bracket and the second bracket; And a driving unit driving the lens module.
- the driving apparatus of the camera module includes a first bracket for supporting and driving a predetermined lens module; A second bracket accommodating the first bracket; A driving unit for driving the first bracket; And a circuit board that controls the driving unit.
- the embodiment may provide a camera module and a driving device for the camera module that can provide an excellent OIS function without distortion of an image even when shooting a video.
- the embodiment has a technical effect capable of providing an ultra-small camera module at the same time as the above-described technical effect.
- the embodiment is a method in which the entire module including the lens and the image sensor is moved, and the correction range is wider compared to the lens movement method, and the optical axis of the lens and the axis of the image sensor are not distorted, thereby minimizing image distortion. There is this.
- 1A is a conceptual diagram of an OIS through a lens movement method in a conventional camera module.
- 1B is a conceptual diagram of an OIS through a lens tilt method in a conventional camera module.
- Figure 2a is a perspective view showing the camera module of the embodiment.
- 2B is a bottom perspective view of the camera module of the embodiment.
- FIG 3 is an exploded perspective view of the camera module of the embodiment.
- FIG. 4A is a cross-sectional perspective view taken along line A1-A1 'of the camera module according to the embodiment shown in FIG. 2A.
- 4B is a cross-sectional view taken along line A1-A1 'of the camera module according to the embodiment shown in FIG. 2A.
- FIG. 5 is a partially enlarged view of a first area B1 of the camera module according to the embodiment shown in FIG. 4B.
- 6A is a cross-sectional view taken along line A2-A2 'of the camera module according to the embodiment shown in FIG. 2A.
- FIG. 6B is a partially enlarged view of a second area B2 of the camera module according to the embodiment shown in FIG. 6A.
- FIG. 6C is a partially enlarged view of the third area B3 of the camera module according to the embodiment shown in FIG. 6A.
- FIG. 7 is a perspective view of a first bracket and a driving unit in the camera module according to the embodiment shown in FIG. 2A.
- 8A and 8B are exemplary driving diagrams of a camera module according to an embodiment.
- Figure 9 is an exemplary spring in the camera module according to the embodiment.
- FIG. 10 is an exemplary view showing a combination of a spring and a first bracket in the camera module according to the embodiment.
- the top (top) or bottom (bottom) (on or under) when described as being formed on the “top (top)” or “bottom (bottom) (on or under)” of each element, the top (top) or bottom (bottom) (on or under) ) Includes both two elements directly contacting each other or one or more other elements formed indirectly between the two elements.
- the top (top) or bottom (bottom) (on or under) when expressed as “up” or “on (under)", it may include the meaning of the downward direction as well as the upward direction based on one element.
- FIG. 2A is a perspective view showing the camera module 201 of the embodiment
- FIG. 2B is a bottom perspective view of the camera module 201 of the embodiment
- FIG. 3 is an exploded perspective view of the camera module 201 of the embodiment shown in FIG. 2A.
- a direction parallel to the optical axis of light may be referred to as a z-axis
- a plane perpendicular to the optical axis may be an xy plane
- the x-axis and y-axis may be defined as mutually perpendicular directions, but are limited thereto. It does not work.
- the x-axis may be defined as a horizontal coordinate axis
- the y-axis may be defined as a vertical coordinate axis, but is not limited thereto.
- the movement of the camera module may include a linear movement that moves along an axis and a rotation movement that rotates around an axis.
- the rotational motion is a pitch that means a rotational movement in the vertical direction using the horizontal axis (x-axis) of the camera module as a rotational axis, and the vertical axis (y-axis) of the camera module as a rotational axis. It may include a yaw, which means a rotational movement in the left and right direction, and a roll, which means a rotational movement with an optical axis (z-axis) passing in the front-rear direction of the camera module as a rotational axis.
- the pitch and yaw may be rotation in the x-axis or y-direction.
- the camera module according to the embodiment may be applied to both the front or rear, bottom and rear of the mobile phone.
- FIG. 3 is an exploded perspective view of the camera module 201 of the embodiment shown in FIG. 2A.
- the camera module 201 of the embodiment may include a lens module 200, a first bracket 310, a ball bearing 316, a second bracket 320, a driving unit 340, and a circuit board 350. have.
- the camera module 201 of the embodiment includes a circuit board 350, an image sensor (not shown) disposed on the circuit board 350, and a lens unit 220 disposed on the image sensor. ) And a housing 210 accommodating the lens unit 220.
- the image sensor, the lens unit 220 and the housing 210 may be referred to as a lens module 200.
- the camera module 201 of the embodiment may include a separate AF driver, for example, VCM, MEMS, piezo, and liquid lens.
- the image sensor substrate may be integrally formed with the circuit board 350 or may be formed separately.
- the substrate of the image sensor when they is formed separately from the circuit board 350, they may be electrically connected to each other.
- the camera module 201 of the embodiment is disposed on the circuit board 350, a gyro sensor (not shown) that senses movement, and a module driver that drives the lens module 200 according to input / output signals of the gyro sensor 300 and a driving circuit element (not shown) for controlling the module driver 300.
- the module driver 300 includes a first bracket 310 supporting and driving the lens module 200, a second bracket 320 and a first bracket 310 accommodating the first bracket 310. It may include a driving unit 340 to drive.
- the module driving unit 300 may allow the lens module 200 coupled to the first bracket 310 to move in pitch, yaw, and roll based on the x, y, and z axes.
- the first bracket 310 supports the configuration of the lens module 200 and the module driver 300, for example, a coil, and performs a Pitch, Yaw, Roll operation together with the AF function of the lens module 200. You can.
- the second bracket 320 may be a fixing part for accommodating the first bracket 310 but performing a pitch, yaw, roll operation of the lens module 200 through the first bracket 310.
- the second bracket 320 may be fixed to the mobile phone, and the first bracket 310 may be attached to the camera module to guide the operation of the camera module.
- the first bracket 310 and the second bracket 320 may be connected by a predetermined spring 400, through which the initial position of the lens module 200 can be set.
- the spring 400 may include an outer support portion 410, a spring portion 420, and an inner support portion 430.
- the outer support 410 may be supported or fixed to the second bracket 320, and the inner support 430 may be supported or fixed to the first bracket 310.
- the initial position of the lens module 200 may be set by a predetermined magnetic force between the first bracket 310 and the second bracket 320.
- FIG. 10 is an exemplary view showing a combination of the spring 400 and the first bracket 310 in the embodiment.
- the inner support portion 430 of the spring 400 may be supported or fixed to the first bracket 310.
- a shield can (not shown) may be additionally installed on the outer surfaces of the lens module 200, the first bracket 310, and the second bracket 320. You can.
- the shield can may be referred to as a cover housing.
- the shield can is formed of a metal material such as steel (SUS), and can shield electromagnetic waves flowing into and out of the camera module, and can also prevent foreign substances from entering the camera module.
- SUS steel
- the image sensor converts a solid-state imaging device such as a Complementary Metal Oxide Semiconductor Image Sensor (CMOS) or a Charge Coupled Device (CCD) and an analog electrical signal output from the solid-state imaging device into digital values.
- CMOS Complementary Metal Oxide Semiconductor Image Sensor
- CCD Charge Coupled Device
- An analog-to-digital converter for converting and outputting may be included.
- the lens unit 220 may be equipped with a predetermined barrel (not shown) and a lens (not shown).
- the lens may include a single lens or a plurality of lenses.
- the lens may also include a liquid lens.
- an actuator capable of driving the lens unit 220 may be disposed in the housing 210.
- the actuator may be a voice coil motor, a micro actuator, a silicon actuator, a shape memory alloy (SAM), and the like, and may be applied in various ways such as an electrostatic method, a thermal method, a bimorph method, an electrostatic force method, a piezo method actuator, and the like. It is not.
- the actuator may support the lens unit 220 to move the lens up and down in response to a control signal of a predetermined control unit to perform an auto focusing function.
- the lens module 200 may include a voice coil motor, a MEMS actuator, and a piezo actuator that moves the lens up and down, and other embodiments may include a liquid lens in addition to the lens without a separate actuator.
- the voice coil motor moves the entire lens of the lens module up and down
- the MEMS and piezo actuators move some of the lenses of the lens module up and down
- the liquid lens controls the focus by changing the curvature of the interface between the two liquids. can do.
- the gyro sensor may employ a two-axis gyro sensor that detects two rotational motion amounts, pitch and yaw, which represent large movements in a two-dimensional image frame, and for more accurate image stabilization It is also possible to employ a 3-axis gyro sensor that detects both the pitch, yaw and roll motion. The movement corresponding to the pitch, yaw, and roll detected by the gyro sensor may be converted into an appropriate physical quantity according to the image stabilization method and the correction direction.
- the circuit board 350 is a rigid printed circuit board (Rigid PCB), a flexible printed circuit board (Flexible PCB), a flexible printed circuit board (Rigid Flexible PCB) It may include any substrate having a wiring pattern that can be electrically connected.
- the circuit board 350 may include a first circuit board 351, a second circuit board 352, and a third circuit board 353.
- the first circuit board 351 may be a rigid printed circuit board (Rigid PCB)
- the second circuit board 352 may be a flexible printed circuit board (Flexible PCB) or a flexible printed circuit board (Rigid Flexible PCB).
- the second circuit board 352 may be arranged in a bent shape in the form of a flexible circuit board.
- the first circuit board 351 may be fixed to the second bracket 320, and the third circuit board 353 may be electrically connected to the lens module 200, but is not limited thereto.
- the second bracket 320 may include a plurality of second recess 320R2 regions.
- the second bracket 320 may have a second recess 320R2 area on four side surfaces.
- other components may be disposed in the second recess 320R2 in addition to the circuit board, so that the efficiency of the space is increased, so that a more compact configuration is possible.
- the second circuit board 352 is disposed in the second recess 320R2 region of the second bracket 320 and has a unique effect of distributing tension caused by the second circuit board 352. In addition, it is possible to prevent interference with the second bracket 320, thereby significantly improving the mechanical and electrical reliability.
- the second circuit board 352 is separately disposed in the second recessed area 320R2 of the second bracket 320, so that the tension received by the second circuit board 352 is ( There is a unique effect of dispersing tension), there is a technical effect that can significantly improve the mechanical and electrical reliability.
- the second circuit board 352 is disposed in the second recess 320R2 region of the second bracket 320, interference between the second circuit board 352 and the driver 240 may be prevented. It can also improve the electrical reliability.
- FIG. 4A is a cross-sectional perspective view taken along line A1-A1 'of the camera module 201 according to the embodiment shown in FIG. 2A
- FIG. 4B is A1 of the camera module 201 according to the embodiment shown in FIG. 2A
- -A1 ' is a cross-sectional view
- FIG. 5 is a partially enlarged view of a first area B1 of the camera module according to the embodiment shown in FIG. 4B.
- the first bracket 310 may include a plurality of first recess 310R1 regions.
- the first bracket 310 may have a first recess 310R1 area on four side surfaces, respectively.
- the first bracket 310 can be precisely injected by having the first recess 310R1 region, can contribute to miniaturization, and can also improve the operation speed according to weight reduction.
- a protrusion may be formed at a position corresponding to the ball bearing 316 in the first recess region 310R1.
- the second bracket 320 may also include a plurality of second recesses 320R2.
- the second bracket 320 may have a second recess 320R2 area on four side surfaces.
- first bracket 310 may include a plurality of ball receiving portion 312 on which the ball bearing 316 is disposed.
- the first bracket 310 may be provided with a ball receiving portion 312 on each of the four side surfaces.
- the upper and lower first widths W1 of the ball receiving portion 312 of the first bracket 310 may be larger than the diameter D1 of the ball, for example, the ball diameter D1 It can be 1.1 to 1.5 times the size, and accordingly, it is possible to secure the moving space of the lens module when driving Yaw and Pith.
- the upper and lower first widths W1 of the ball receiving portion 312 of the first bracket 310 may be 1.2 times the ball diameter D1, but are not limited thereto.
- the ball diameter D1 may be about 0.4 mm to 0.8 mm, but is not limited thereto. In the embodiment, the ball diameter D1 may be 0.6 mm, but is not limited thereto.
- the first bracket 310 includes a first round surface 310S whose side cross-section is curved, and the second bracket 320 has the first round surface 310S. It may include a second round surface (320S) having a curved surface corresponding to.
- the curvature of the first round surface 310S may be the same as the curvature of the second round surface 320S, but is not limited thereto.
- the first round surface 310S and the second round surface 320S respectively, which are curved surfaces, have the same curvature, thereby requiring yaw and pitch. , It can be driven without interference by maintaining a separation from each other during roll driving.
- first bracket 310 and the second bracket 320 may be spaced apart by a certain distance by the ball bearing 316, and the embodiment may be spaced 0.2 mm apart. In addition, other embodiments may be spaced 0.2 to 0.5 mm.
- the first round surface 310S may be disposed on an outer side end surface of the first bracket 310, and the second round surface 320S may be disposed on an inner side end surface of the second bracket 320. have.
- the driving unit 340 provides the lens module 200 by providing the first round surface 310S and the second round surface 320S, each of which is the curved surface of the first bracket 310 and the second bracket 320, respectively. Roll, Yaw, and Pitch can be smoothly driven.
- the upper end of the first bracket 310 is disposed lower than the upper end of the second bracket 320 so that the roll driving of the lens module 200 can be smoothly performed.
- the lower end of the first bracket 310 is disposed higher than the lower end of the second bracket 320 so that at least one of the roll, yaw, and pitch of the lens module 200 can be smoothly performed. have.
- the lower end of the second bracket 320 is provided with a stopper portion 320B to function as a stopper for stopping the movement of the first bracket 310.
- the first bracket 310 can be precisely injected by having the first recess 310R1 region, can contribute to miniaturization, and the operation speed can be improved according to weight reduction.
- FIG. 6A is a cross-sectional view along the line A2-A2 'of the camera module according to the embodiment shown in FIG. 2A
- FIG. 6B is a second area B2 of the camera module according to the embodiment shown in FIG. 6A
- FIG. 6C is a partially enlarged view of a third region B3 of the camera module according to the embodiment illustrated in FIG. 6A.
- the first bracket 310 may include a plurality of ball receiving portions 312 on which the ball bearings 316 are disposed.
- the first bracket 310 may be provided with a ball receiving portion 312 on each of the four side surfaces.
- the first bracket 310 may include a first round surface 310S whose side end surface is curved.
- the first round surface 310S of the first bracket 310 includes at least two first unit round surfaces 310SR1, 310SR2, 310SR3, 310SR4, and the two first unit round surfaces 310SR1 , 310SR2, 310SR3, 310SR4) may be disposed on opposite sides of the lens module 200.
- the first bracket 310 includes the 1-1 to 1-4 unit round surfaces 310SR1, 310SR2, 310SR3, 310SR4, and the 1-1 to 1-2 unit round surfaces ( 310SR1 and 310SR2) may be disposed on opposite sides of the lens module 200. Also, the first to third to fourth unit round surfaces 310SR3 and 310SR4 may be disposed on opposite sides of the lens module 200.
- the first unit round surface may be referred to as an inclined side column.
- the first bracket 310 of the embodiment may include a plurality of inclined side pillars and vertical side pillars disposed between each inclined side pillar.
- the first bracket 310 is disposed between the 1-1 inclined side pillars and the 1-4 inclined side pillars 310SR1, 310SR2, 310SR3, 310SR4 on four side surfaces and their respective inclined side pillars. It may include a 1-1 to 1-4 vertical side pillars (310SVR1, 310SV2, 310SV3, 310SV4).
- the 1-1 inclined side pillar 310SR1 and the 1-2 inclined side pillar 310SR2 may be arranged to be symmetric with each other, and the 1-3 inclined side pillar 310SR3 and the 1-4 inclined side
- the pillars 310SR4 may also be arranged to be symmetric with each other.
- the second bracket 320 may also include a second round surface 320S whose side end surface is curved.
- the second round surface 320S of the second bracket 320 includes at least two second unit round surfaces 320SR1, 320SR2, 320SR3, 320SR4, and the two second unit round surfaces 320SR1 , 320SR2, 320SR3, 320SR4) may be disposed on opposite sides of the lens module 200.
- the second bracket 320 includes 2-1 to 2-4 unit round faces 320SR1, 320SR2, 320SR3, and 320SR4, and the 2-1 to 2-2 unit round faces ( 320SR1 and 320SR2) may be disposed on opposite sides of the lens module 200.
- the second to third to second to second unit round surfaces 320SR3 and 320SR4 may be disposed on opposite sides of the lens module 200.
- the second unit round surface may be referred to as an inclined side column.
- the second round surface 320S of the second bracket 310 includes 2-1 inclined side pillars to 2-4 inclined side pillars 320SR1, 320SR2, 320SR3, 320SR4 and their inclined side surfaces. It may include vertical side columns (320SV1, 320SV2, 320SV3, 320SV4) disposed between the columns.
- the 2-1 inclined side pillars 320SR1 and the 2-2 inclined side pillars 320SR2 may be arranged to be symmetric with each other, and the 2-3 inclined side pillars 320SR3 and the 2-4 inclined sides
- the pillars 320SR4 may also be arranged to be symmetric with each other.
- the ball receiving portion 312 may be disposed between the first round surface 310S of the first bracket 310 and the second round surface 320S of the second bracket 320.
- the ball accommodating portion 312 includes a 1-1 unit round surface to a 1-4 unit round surface 310SR1, 310SR2, 310SR3, 310SR4, and a 2-1 unit round surface corresponding to each of them. It may be disposed between 2-4 unit round surfaces (320SR1, 320SR2, 320SR3, 320SR4).
- the first bracket 310 includes a 1-1 unit round surface to a 1-4 unit round surface 310SR1, 310SR2, 310SR3, 310SR4, but vertical side columns 310SV1, 310SV2, 310SV3, 310SV4 ).
- the first bracket 310 may have a structure in which the 1-1 unit round surface to the 1-4 unit round surface 310SR1, 310SR2, 310SR3, 310SR4 are connected to each other.
- the housing of the lens module and the 1-1 unit round surface to the 1-4 unit round surface may be integrally formed, but are not limited thereto.
- yaw and pitch driving will be described.
- the first-first unit round surface 310SR1 will rise and the first-second unit round surface 310SR2 will be described.
- the yaw function can be performed.
- a pitch function may be performed, but is not limited thereto.
- FIG. 6B is a partially enlarged view of the second area B2 of the camera module according to the embodiment illustrated in FIG. 6A.
- the ball receiving portion 312 provided in the first bracket 310 may have a V shape.
- the ball bearing 316 may contact the first bracket 310 and the second bracket 320 as a whole in three points.
- the ball receiving portion 312 provided in the first bracket 310 includes a first inclined surface 312S1, a second inclined surface 312S2, and a bottom surface 312B to form a V-shaped rail. It may be shaped.
- the ball receiving portion 312 of the first bracket 310 may be formed in a V-shaped rail in the z-axis direction, and the ball bearing 316 may be different from the first bracket 310.
- the two-point contact may be made, and the second bracket 320 may be in contact with one point to make three-point contact.
- the horizontal cross-section of the ball receiving portion 312 may be in a circular shape.
- the first-first unit round surface 310SR1 of the first bracket 310 may include a round protrusion 310SP in an opposite area corresponding to the ball receiving portion 312.
- the first, second, third, and first unit round surfaces 310SR2, 310SR3, and 310SR4 may also include a round protrusion 310SP in an opposite area corresponding to the ball receiving portion 312.
- the 1-1, 1-2, 1-3, and 1-4 unit round faces 310SR1, 310SR2, 310SR3, 310SR4 are opposite areas corresponding to the ball receiving portion 312. It is provided with a round protrusion 310SP protruding to the first recessed area 310R1, providing a space in which the ball receiving portion 312 can be formed, and the ball receiving portion 312 is formed of a solid structure to form a ball bearing The reliability of the rolling drive of 316 can be improved.
- FIG. 6C is a partially enlarged view of the third area B3 of the camera module according to the embodiment illustrated in FIG. 6A.
- the first bracket 310 may include a 1-2 recess 310R2 between the 1-1 unit round surface 310SR1 and the 1-1 vertical column 310SV1.
- the second bracket 320 may include a 2-1 protrusion 320SP1 between the 2-1 unit round surface 320SR1 and the 2-1 vertical column 320SV1.
- the 2-1 protrusion 320SP1 may allow the yaw, pitch, or roll driving to proceed smoothly as the first bracket 310 is disposed on the 1-2 recess 310R2.
- the 2-1 protrusion 320SP1 may function as a stopper when the roll of the first bracket 310 is driven.
- FIG. 7 is a perspective view of the first bracket 310 and the driving unit 340 in the camera module according to the embodiment shown in FIG. 2A
- FIGS. 8A and 8B are exemplary driving views of the camera module according to the embodiment.
- the driving unit 340 may include a first driving unit 341 and a second driving unit 342.
- the driving unit 340 may be coupled to the lens module, but is not limited thereto.
- the first driving part 341 may include a first magnet 341m and a first coil part 341c to induce a force F1 in the first direction.
- the first driving part 341 may include a first magnet 341m and a donut-shaped first coil part 341c to induce a first force F1 in the z-axis direction.
- the first magnet 341m is a magnet in which n-poles and s-poles are disposed in the vertical direction, and may induce electromagnetic force in the vertical direction.
- the second driving part 342 may include a second magnet 342m and a second coil part 342c to induce a force F2 in the second direction.
- the second magnet 342m may be seated so that the n-pole or the s-pole faces the second coil part 342c horizontally, thereby causing the force F2 in the horizontal direction (Y-axis direction).
- the second driving part 342 may include a second magnet 342m and a donut-shaped second coil part 342c to induce a second force F2 in the y-axis direction.
- the first yoke 344 may be disposed between the driving unit 340 and the first bracket 310, and the first yoke 344 functions as a back yoke to uniform the magnetic flux and magnetic flux to the outside. This can be prevented from leaking.
- a second yoke (not shown) made of iron may be further provided between the second magnet 342m and the second coil part 342c.
- a magnetic member such as a second yoke may be inserted and disposed inside the second coil part 342c.
- a second yoke is provided at the center of the second coil part 342c, so that a solenoid can be implemented by the yoke and the second coil part 342c.
- the first and second coils 341c and 342c are attached to the first bracket 310, and the first and second magnets 341m and 342m are spaced apart from the coil.
- a structure in which the second magnets 341m and 342m are attached to the first bracket 310 and the coils are spaced apart may also be possible.
- roll driving may be possible according to an embodiment.
- the 2-1 protrusion 320SP1 may allow the roll driving to proceed smoothly while the first bracket 310 is disposed on the 1-2 recess 310R2.
- first bracket 310 may function as a roll driving stopper in the 2-1 protrusion 320SP1.
- a yaw / pitch tilting driving may be possible according to an embodiment.
- the first bracket 310 includes a first round surface 310S whose side cross-section is curved, and the second bracket 320 is attached to the first round surface 310S. It may include a second round surface (320S) having a corresponding curved surface.
- the curvature of the first round surface 310S may be the same as the curvature of the second round surface 320S, but is not limited thereto.
- the first round surface 310S and the second round surface 320S respectively, which are curved surfaces, have the same curvature, thereby requiring yaw and pitch. , It can be driven without interference by maintaining a separation from each other during roll driving.
- the first round surface 310S may be disposed on an outer side end surface of the first bracket 310, and the second round surface 320S may be disposed on an inner side end surface of the second bracket 320. have.
- the driving unit 340 provides the lens module 200 by providing the first round surface 310S and the second round surface 320S, each of which is the curved surface of the first bracket 310 and the second bracket 320, respectively. Roll, Yaw, and Pitch can be smoothly driven.
- the upper end of the first bracket 310 is disposed lower than the upper end of the second bracket 320 so that the roll driving of the lens module 200 can be smoothly performed.
- the lower end of the first bracket 310 is disposed higher than the lower end of the second bracket 320 so that at least one of the roll, yaw, and pitch of the lens module 200 can be smoothly performed. have.
- the lower end of the second bracket 320 is provided with a stopper portion 320B to function as a stopper for stopping the movement of the first bracket 310.
- a rotation angle of about 0.8 to 2.0 ° (including a rotation angle of 1 °) can be secured by a roll driving or a yaw / pitch tilting driving, and through this, an effective OIS function can be performed.
- the embodiment may provide a camera module and a driving device for the camera module that can provide an excellent OIS function without distortion in image quality even when shooting a video.
- the embodiment has a technical effect capable of providing an ultra-small camera module at the same time as the above-described technical effect.
- the camera module of the embodiment may include a separate AF driver, for example, VCM, MEMS, piezo, liquid lens, and the like.
- the image sensor substrate may be formed integrally with the circuit board or may be formed separately.
- the camera module of the embodiment is disposed on the circuit board, a gyro sensor (not shown) that senses motion, and a module driver for driving the lens module according to the input / output signals of the gyro sensor and a driving circuit for controlling the module driver It may include a device (not shown).
- the lens module may include a voice coil motor, a MEMS actuator, and a piezo actuator that moves the lens up and down, and other embodiments may include a liquid lens in addition to the lens without a separate actuator.
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Optics & Photonics (AREA)
- Adjustment Of Camera Lenses (AREA)
- Studio Devices (AREA)
- Camera Bodies And Camera Details Or Accessories (AREA)
- Lens Barrels (AREA)
Abstract
Description
Claims (10)
- 렌즈 모듈;제1 라운드면을 포함하고, 상기 렌즈 모듈과 결합되어 이동하는 제1 브라켓;상기 제1 라운드면과 대응하는 제2 라운드면을 포함하는 제2 브라켓; 및상기 제1 브라켓의 상기 제1 라운드면과 상기 제2 브라켓의 상기 제2 라운드면 사이에 배치된 볼 베어링;상기 렌즈모듈과 상기 제2 브라켓 사이에 배치되는 구동부;를 포함하고,상기 제2 브라켓의 상기 제2 라운드면의 폭과 높이는 상기 제1 브라켓의 상기 제1 라운드면의 폭과 높이보다 큰 카메라 모듈.
- 렌즈 모듈;제1 라운드면을 포함하고, 상기 렌즈 모듈과 결합되어 이동하는 제1 브라켓;상기 제1 라운드면과 대응하는 제2 라운드면을 포함하는 제2 브라켓; 및상기 제1 브라켓의 상기 제1 라운드면과 상기 제2 브라켓의 상기 제2 라운드면 사이에 배치된 볼 베어링;상기 렌즈모듈과 상기 제2 브라켓 사이에 배치되는 구동부;를 포함하고,상기 제1 브라켓의 상기 제1 라운드면은 적어도 두 개의 제1 단위 라운드면을 포함하고, 상기 두 개의 제1 단위 라운드면은 상기 렌즈모듈을 중심으로 서로 반대편에 배치되며,상기 제2 브라켓의 상기 제2 라운드면은 적어도 두 개의 제2 단위 라운드면을 포함하고, 상기 적어도 두 개의 제2 단위 라운드면 각각은 상기 적어도 두 개의 제1 단위 라운드면 각각과 대응되게 배치되는 카메라 모듈.
- 렌즈 모듈;제1 라운드면을 포함하고, 상기 렌즈 모듈과 결합되어 이동하는 제1 브라켓;상기 제1 라운드면과 대응하는 제2 라운드면을 포함하는 제2 브라켓; 및상기 제1 브라켓의 상기 제1 라운드면과 상기 제2 브라켓의 상기 제2 라운드면 사이에 배치된 볼 베어링;상기 렌즈모듈과 상기 제2 브라켓 사이에 배치되는 구동부;를 포함하고,상기 렌즈모듈은 광축을 기준으로 상기 제2 라운드면을 따라 회전하고,상기 렌즈모듈은 상기 제2 라운드면을 따라 상기 광축을 기준으로 상하로 구동되는 카메라 모듈.
- 제1 항 내지 제3항 중 어느 하나의 항에 있어서,상기 렌즈모듈이 광축을 기준으로 회전하도록 상기 볼 베어링은 제1 라운드면과 상기 제2 라운드면을 따라 움직이는 카메라모듈
- 제1 항 내지 제3항 중 어느 하나의 항에 있어서,상기 렌즈모듈이 광축에 수직한 가상의 평면을 기준으로 틸트되도록 상기 볼 베어링은 제1 라운드면과 상기 제2 라운드면을 따라 움직이는 카메라모듈
- 제1 항 내지 제3항 중 어느 하나의 항에 있어서,상기 제1 라운드면은 상기 제1 브라켓의 외측면에 배치되며,상기 제2 라운드면은 상기 제2 브라켓의 내측면에 배치된 카메라 모듈.
- 제1 항 내지 제3항 중 어느 하나의 항에 있어서,상기 제1 브라켓의 상단은 상기 제2 브라켓의 상단보다 낮게 배치되는 카메라 모듈.
- 제1 항 내지 제3항 중 어느 하나의 항에 있어서,상기 제1 브라켓은 상기 제1 브라켓의 내측면에 형성되고 상기 제1 라운드면에 대응되는 위치에 배치된 제1 리세스 영역을 포함하는 카메라 모듈.
- 제1 항 내지 제3항 중 어느 하나의 항에 있어서,상기 제2 브라켓은 상기 제2 브라켓의 외측면에 형성되고 상기 제2 라운드 영역에 대응되는 위치에 배치된 제2 리세스 영역을 포함하는 카메라 모듈.
- 제9 항에 있어서,상기 제1 브라켓은 상기 볼 베어링이 배치되는 볼 수용부를 포함하고,상기 볼 수용부는 상기 제1 리세스 영역에 대응되는 위치에 배치되는 카메라 모듈.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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KR1020217005221A KR20210042926A (ko) | 2018-09-05 | 2019-09-05 | 카메라 모듈 |
US17/271,728 US11982934B2 (en) | 2018-09-05 | 2019-09-05 | Camera module |
JP2021512381A JP2021535443A (ja) | 2018-09-05 | 2019-09-05 | カメラモジュール |
CN202310878775.8A CN116939366A (zh) | 2018-09-05 | 2019-09-05 | 摄像头模块 |
EP19858297.5A EP3849167A4 (en) | 2018-09-05 | 2019-09-05 | CAMERA MODULE |
CN201980057621.4A CN112655191B (zh) | 2018-09-05 | 2019-09-05 | 摄像头模块 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR10-2018-0106210 | 2018-09-05 | ||
KR20180106210 | 2018-09-05 |
Publications (1)
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WO2020050650A1 true WO2020050650A1 (ko) | 2020-03-12 |
Family
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Application Number | Title | Priority Date | Filing Date |
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PCT/KR2019/011484 WO2020050650A1 (ko) | 2018-09-05 | 2019-09-05 | 카메라 모듈 |
Country Status (6)
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US (1) | US11982934B2 (ko) |
EP (1) | EP3849167A4 (ko) |
JP (1) | JP2021535443A (ko) |
KR (1) | KR20210042926A (ko) |
CN (2) | CN112655191B (ko) |
WO (1) | WO2020050650A1 (ko) |
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WO2022005151A1 (ko) * | 2020-07-02 | 2022-01-06 | 엘지이노텍 주식회사 | 카메라 모듈 |
EP4141533A4 (en) * | 2020-04-20 | 2024-05-15 | LG Innotek Co., Ltd. | CAMERA MODULE |
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DE102019101490A1 (de) * | 2019-01-22 | 2020-07-23 | Sick Ag | Modulare Kameravorrichtung und Verfahren zur optischen Erfassung |
JP7267558B2 (ja) * | 2019-06-14 | 2023-05-02 | ニデックインスツルメンツ株式会社 | 振れ補正機能付き光学ユニット |
JP7484192B2 (ja) * | 2020-01-30 | 2024-05-16 | ニデック株式会社 | 振れ補正機能付き光学ユニット |
JP2021120706A (ja) * | 2020-01-30 | 2021-08-19 | 日本電産株式会社 | 振れ補正機能付き光学ユニット |
JP7431061B2 (ja) * | 2020-03-04 | 2024-02-14 | ニデックインスツルメンツ株式会社 | 振れ補正機能付き光学ユニット |
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EP3849167A1 (en) | 2021-07-14 |
US11982934B2 (en) | 2024-05-14 |
EP3849167A4 (en) | 2022-06-01 |
CN116939366A (zh) | 2023-10-24 |
US20210318592A1 (en) | 2021-10-14 |
CN112655191A (zh) | 2021-04-13 |
KR20210042926A (ko) | 2021-04-20 |
JP2021535443A (ja) | 2021-12-16 |
CN112655191B (zh) | 2023-08-11 |
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