WO2022121823A1 - 摄像模组 - Google Patents

摄像模组 Download PDF

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Publication number
WO2022121823A1
WO2022121823A1 PCT/CN2021/135631 CN2021135631W WO2022121823A1 WO 2022121823 A1 WO2022121823 A1 WO 2022121823A1 CN 2021135631 W CN2021135631 W CN 2021135631W WO 2022121823 A1 WO2022121823 A1 WO 2022121823A1
Authority
WO
WIPO (PCT)
Prior art keywords
transmission member
lens module
camera module
bracket
lens
Prior art date
Application number
PCT/CN2021/135631
Other languages
English (en)
French (fr)
Inventor
牛志皓
成东村
王微
解冬
Original Assignee
维沃移动通信有限公司
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
Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Priority to JP2023532328A priority Critical patent/JP2023551478A/ja
Priority to KR1020237022847A priority patent/KR20230117414A/ko
Priority to EP21902529.3A priority patent/EP4262186A4/en
Publication of WO2022121823A1 publication Critical patent/WO2022121823A1/zh
Priority to US18/329,695 priority patent/US20230314831A1/en

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Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • 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
    • 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
    • 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
    • G03B5/06—Swinging lens about normal to the optical axis
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
    • H02N2/108—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors around multiple axes of rotation, e.g. spherical rotor motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
    • H02N2/12—Constructional details
    • H02N2/123—Mechanical transmission means, e.g. for gearing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • 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
    • 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
    • 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
    • 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
    • G03B2205/0061—Driving means for the movement of one or more optical element using piezoelectric actuators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
    • H02N2/16—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors using travelling waves, i.e. Rayleigh surface waves
    • H02N2/163—Motors with ring stator

Definitions

  • the application belongs to the technical field of electronic equipment, and specifically relates to a camera module.
  • the camera module plays an increasingly important role, and the quality of the camera module's photographing performance has become a key factor affecting the overall performance of electronic products.
  • the camera module will inevitably shake, and it is urgent to develop a camera module with anti-shake effect.
  • the present application aims to provide a camera module that at least solves one of the problems of the background art.
  • the embodiment of the present application proposes a camera module, comprising: a bracket, the bracket has a groove; a driving part, the driving part is arranged on a first side of the bracket; a transmission part, the transmission part is arranged on the the inner wall of the groove, the transmission member is electrically connected with the driving member; the lens module, at least a part of the lens module is arranged in the groove, the lens module is movably connected with the transmission member, The transmission member is used to drive the lens module to move.
  • the driving member and the transmission member are used to cooperate.
  • the driving member can drive the lens module through the transmission member to move in the opposite direction to the shaking direction of the camera module, thereby offsetting the vibration caused by the vibration. Shake, so that the camera module has anti-shake function.
  • FIG. 1 is a schematic diagram of an embodiment of a camera module according to the present application.
  • Fig. 2 is a sectional view along line A-A in Fig. 1;
  • Figure 3 is an enlarged view of the B part circled in Figure 2;
  • FIG. 4 is a schematic diagram of an angle assembled between a transmission member and a piezoelectric element of a camera module according to an embodiment of the present application
  • FIG. 5 is a schematic diagram of another angle assembled between the transmission member and the piezoelectric element of the camera module according to the embodiment of the present application;
  • Fig. 6 is a partial cross-sectional view along line C-C in Fig. 4;
  • FIG. 7 is a schematic structural diagram of a lens module of a camera module according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a lens module of a camera module rotating along an X-axis or a Y-axis direction according to an embodiment of the present application;
  • FIG. 9 is an assembly schematic diagram of four piezoelectric elements of a camera module according to an embodiment of the present application.
  • first piezoelectric element 21 first piezoelectric element 21; second piezoelectric element 22; third piezoelectric element 23; fourth piezoelectric element 24;
  • Transmission member 30 installation channel 31; first segment body 32; second segment body 33;
  • lens holder 41 lens holder body 411; annular groove 412; friction plate 413;
  • Protruding assembly 50 Protruding part 51;
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
  • installed should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
  • the camera module 100 according to the embodiment of the present application will be described below with reference to FIGS. 1 to 9 .
  • the camera module 100 includes a bracket 10 , a driving member 20 , a transmission member 30 and a lens module 40 .
  • the bracket 10 has a groove 11
  • the driving member 20 is arranged on the first side of the bracket 10
  • the transmission member is arranged on the inner wall of the groove 11
  • the transmission member 30 is electrically connected with the driving member 20 .
  • At least a part of the lens module 40 is disposed in the groove 11
  • the lens module 40 is movably connected with the transmission member 30
  • the transmission member 30 is used to drive the lens module 40 to move.
  • the camera module 100 is mainly composed of a bracket 10 capable of supporting, a driving member 20 capable of generating a driving force, a transmission member 30 connected to the driving member 20 and capable of transmitting the driving force, and a transmission member
  • the lens module 40 is connected and can move under the action of the driving force.
  • the bracket 10 has a groove 11 , and at least a part of the lens module 40 is disposed in the groove 11 , and the lens module 40 can extend out of the groove 11 to photograph the surrounding environment.
  • the driving member 20 is disposed on the first side of the bracket 10 , and can transmit a driving force through the transmission member 30 to drive the lens module 40 to move relative to the bracket 10 .
  • the transmission member 30 is electrically connected with the driving member 20 , and the transmission member 30 can drive the lens module 40 to move.
  • the installation method between the transmission member 30 and the bracket 10 includes but is not limited to the following situations:
  • the transmission member 30 is arranged around the inner wall of the groove 11 , and the contact area between the transmission member 30 and the lens module 40 can form an annular area, which can drive the outer side of the lens module 40 .
  • the transmission member 30 is disposed at a plurality of installation positions on the inner wall surface of the groove 11 , and the plurality of installation positions can be designed symmetrically or asymmetrically with respect to the lens module 40 .
  • the number of the plurality of installation positions may be two or four.
  • the bracket 10 extends along the xy plane, and the groove 11 extends along the z direction.
  • one of the two installation positions can be located on the x-axis, and the other of the two installation positions can be located on the y-axis, so that the movement of the lens module 40 around the x-direction and around the y-direction can be realized.
  • the four installation positions can be symmetrically arranged relative to the lens module 40 . It should be noted that, by setting an even number of symmetrically arranged installation positions, when the lens module 40 rotates along a certain direction, the swing range of the lens module 40 can be precisely controlled.
  • the transmission member 30 of the camera module 100 is not limited to be disposed on the inner wall of the groove 11 , and may also be disposed on the extension line of the inner wall surface of the groove 11 .
  • the lower part of the lens module 40 is located in the groove 11
  • the transmission member 30 is arranged above the bracket 10 and is located on the extension line of the inner wall surface of the groove 11 , and can be connected with the lens module 40 .
  • the middle part is connected to drive the lens module 40 to move.
  • the driving member 20 and the transmission member 30 are used to cooperate, and when the camera module 100 is shaken, the driving member 20 can drive the lens module 40 through the transmission member 30 to form the camera module.
  • the movement of the group 100 in the opposite direction of shaking can offset the shaking caused by the vibration, so that the camera module 100 has an anti-shake function.
  • the transmission member 30 includes a first segment body 32 and a second segment body 33 connected in sequence, the first segment body 32 is arranged on the first side of the bracket 10 , and the driving member 20 is arranged between the bracket 10 and the second segment body 33 . between a section of body 32 .
  • the second segment body 33 is disposed on the inner wall of the groove 11 , and one end of the second segment body 33 away from the corresponding first segment body is movably connected to the lens module 40 .
  • the second segment body 33 may be disposed on the inner wall of the groove 11 or may be disposed on the extension line of the inner wall of the groove 11 , which is not limited herein.
  • the transmission member 30 as a structure in which the first segment body 32 and the second segment body 33 cooperate, not only can the contact area between the first segment body 32 and the driving member 20 be ensured, but also the The effective contact between the second segment body 33 and the lens module 40 improves the stability and precision of the anti-shake of the lens module 40 .
  • first segment body 32 and the second segment body 33 are integrally formed, and the use of the integrally formed structure has the advantage of being convenient for processing and production.
  • the second segment body 33 is an annular structure, which can not only improve the balance of the supporting force for the lens module 40, but also expand the contact area between the transmission member 30 and the lens module 40, which is beneficial to realize the lens module 40. multi-degree-of-freedom and multi-angle activities.
  • bracket 10 as a ring member coaxially disposed with the transmission member 30 , not only the transmission member 30 can be supported, but also the movement obstruction of the lens module 40 by the bracket 10 is avoided.
  • the transmission member 30 and the bracket 10 are defined as extending in the horizontal direction below.
  • a groove 11 and a driving member 20 are provided above the bracket 10 , a first segment body 32 is provided above the driving member 20 , and the driving member 20 can drive the driving member 20 through the first segment body 32 and the second segment body 33 .
  • the force is transmitted to the lens module 40, and the movement of the lens module 40 can be driven by frictional force.
  • the second segment body 33 may also be in direct contact with the driving member 20, which is not limited herein.
  • the inner peripheral surface of the transmission member 30 is provided with a protrusion assembly 50 arranged along its own circumferential direction, and the transmission can be improved by providing the protrusion assembly 50 friction between the component 30 and the lens module 40.
  • the protruding assembly 50 includes a plurality of protruding parts 51 , and the protruding parts 51 are spaced and distributed along the circumferential direction of the transmission member 30 .
  • the inner surfaces of the protruding portions 51 abut against the lens module 40 respectively.
  • the driving member can transmit the driving force to the protruding portion 51. For example, when the driving force is a vibration force, the corresponding protruding portion 51 can also vibrate.
  • the transmission member 30 when the transmission member 30 is an annular member, the annular hollow area of the annular member is formed as the installation channel 31 , and the inner wall surface of the annular member is provided with a protrusion extending toward the central axis of the installation channel 31 . part 51, the protruding part 51 protrudes from the inner wall surface of the ring.
  • the number of the protruding parts 51 is multiple, the multiple protruding parts 51 can be spaced apart along the inner wall surface of the ring member, and the multiple protruding parts 51 can be enclosed in a ring shape.
  • the gap between two adjacent raised portions 51 can be set to extend in the up-down direction, which is beneficial for the transmission member 30 to drive the lens module 40 to rotate in the Z-axis direction.
  • the number of the protruding components 50 is at least two, the number of the protruding components 50 may be an odd number or an even number, and the number of the protruding components 50 is not limited. At least two protruding assemblies 50 are spaced apart along the axial direction of the groove 11 . As shown in FIG. 2, FIG. 4 to FIG. 6, the number of the protruding assemblies 50 is two. When the high side of the transmission member 30 extends in the up-down direction, the two protruding assemblies 50 can be spaced apart along the up-down direction. The gaps between the protruding components 50 extend in the horizontal direction, which is beneficial for the transmission member 30 to drive the lens module 40 to move along the X-axis and Y-axis directions.
  • the raised portion 51 is a long strip extending along the axial direction of the transmission member 30 , such as a trapezoid or a rectangle.
  • the positions of the protruding portions 51 of the two adjacent protruding assemblies 50 in the axial direction of the transmission member 30 are in one-to-one correspondence, which facilitates the precise control of the direction of the force applied by the transmission member 30 to the lens module 40 through the driving member 20 , preventing the two protruding assemblies 50 from interfering with each other.
  • the driving member 20 is a piezoelectric element.
  • the upper side of the stent 10 may be defined as the first side of the stent 10 . That is to say, a piezoelectric element may be provided above the bracket 10, and the transmission member 30 may be provided above the piezoelectric element.
  • the transmission member 30 is an annular member, an installation channel 31 may be formed in the transmission member 30 , at least a part of the lens module 40 may be disposed in the installation channel 31 , and the outer peripheral surface of the lens module 40 can be connected with the inner circumference of the transmission member 30 . face connection.
  • the piezoelectric element when the piezoelectric element is energized, the piezoelectric element can generate a driving force through vibration, and the transmission member 30 can be connected with the piezoelectric element and can transmit the driving force, so that the lens module 40 can move under the action of the driving force.
  • the bracket 10 can be selected as a metal part, which can improve the vibration amplitude.
  • the piezoelectric element includes a piezoelectric vibration material having a piezoelectric effect, and the piezoelectric vibration material can convert mechanical energy and electrical energy into each other.
  • Piezoelectric vibration materials mainly include piezoelectric ceramics and piezoelectric fibers.
  • the piezoelectric effect refers to certain crystals that generate charges proportionally under the action of mechanical stress or geometric deformation proportionally under the action of an external electric field.
  • the piezoelectric effect can be divided into positive piezoelectric effect and inverse piezoelectric effect. Piezoelectric effect.
  • the inverse piezoelectric effect refers to the fact that when an electric field is applied to the piezoelectric crystal without external force, the positive and negative charge centers inside the piezoelectric crystal will be displaced, and at the same time, the material will be mechanically deformed.
  • the size of the deformation is related to the electric field. Intensity is proportional.
  • the piezoelectric element when a working voltage is input to the piezoelectric element of the camera module 100 according to the embodiment of the present application, the piezoelectric element can be deformed to generate vibration, thereby driving at least a part of the transmission member 30 connected to the piezoelectric element. Vibrates in the ultrasonic frequency range. It should be noted that, by controlling the working position of the piezoelectric element and the working voltage input to the piezoelectric element, different positions of the piezoelectric element can be deformed to different degrees, for example, a ring-shaped traveling wave can be generated.
  • the lower end of the lens module 40 is installed in the installation channel 31 , and the relative positional relationship between the upper end of the lens module 40 and the upper end of the installation channel 31 is not limited.
  • the piezoelectric element When the piezoelectric element is energized, the piezoelectric element can deform and vibrate.
  • the transmission element 30 since the transmission element 30 is connected to the piezoelectric element and the lens module 40 respectively, the transmission element 30 can transmit the driving force generated by the piezoelectric element.
  • the lens module 40 can move; on the other hand, since the outer peripheral surface of the lens module 40 is connected with the inner peripheral surface of the transmission member 30, the transmission member 30 can support and limit the lens module 40. Due to the action of the position, the transmission member 30 generates frictional force with the lens module 40 during the vibration process, and the frictional force can be used as a driving force to push the lens module 40 to move in the installation channel 31 .
  • the camera module 100 according to the embodiment of the present application can be used for electronic equipment, and the electronic equipment includes but is not limited to mobile phones.
  • the camera module 100 according to the embodiment of the present application may also have an anti-shake effect during the process of taking pictures or shooting videos.
  • the camera module 100 according to the embodiment of the present application further includes a gyroscope and a processor. First, the shaking direction and shaking angle of the lens module 40 can be detected by the gyroscope; then, the processor can receive the data sent by the gyroscope.
  • the data of the piezoelectric element can be calculated according to the shaking angle, and the working position of the piezoelectric element can be selected according to the shaking direction; then, the processor inputs the working voltage to the piezoelectric element to make the different positions of the piezoelectric element Different degrees of deformation are generated, and then different positions of the transmission member 30 are deformed and vibrated, and the lens module 40 is driven to move at a preset angle through friction, so as to compensate for the displacement or rotation of the optical path where the vibration of the lens module 40 occurs, so as to reduce the photos. Blur effect.
  • the piezoelectric element having the inverse piezoelectric effect is indirectly connected to the lens module 40 through the transmission member 30, and the transmission member 30 is vibrated by controlling the input voltage to the piezoelectric element, and the The transmission member 30 can drive the lens module 40 to move through friction.
  • the camera module 100 according to the embodiment of the present application has an anti-shake effect and can drive the lens module 40 to perform displacement/rotation compensation; on the other hand, the camera module according to the embodiment of the present application
  • the flexible circuit board 70 connected to the piezoelectric element in 100 will not be pulled to a large extent, and there is no need to additionally provide a junction box on one side of the lens module 40 that can accommodate the flexible circuit board 70 arranged in an S-shape, which saves money.
  • the transmission member 30 can generate ultrasonic frequency
  • the vibration within the range can expand the moving range of the lens module 40, such as the rotation angle range.
  • the piezoelectric element is in a sheet shape, the first side of the piezoelectric element abuts against the bracket 10 , and the second side of the piezoelectric element abuts against the transmission member 30 .
  • the piezoelectric element is a sheet-like structure, and a bracket 10 is arranged under the piezoelectric element, and the upper part is defined as the second side.
  • a transmission member 30 is provided. The upper end surface of the piezoelectric element can abut against the transmission member 30 , and the lower end surface of the piezoelectric element can abut against the bracket 10 .
  • the connection manner between the piezoelectric element and the transmission member 30 may include pressing, bonding or welding.
  • piezoelectric elements there are multiple piezoelectric elements, such as four in FIG. 5 .
  • a plurality of piezoelectric elements are connected end to end to form a ring shape corresponding to the shape of the bracket 10 and the transmission member 30 , and the direction of the friction force between the corresponding transmission member 30 and the lens module 40 is controlled by the cooperation of at least two piezoelectric elements. , to improve the transmission efficiency of driving force.
  • the number of piezoelectric elements includes, but is not limited to, four, for example, six. And the number of piezoelectric elements can be odd or even, which is not limited here.
  • the four piezoelectric elements are divided into a first piezoelectric element 21, a second piezoelectric element 22, a third piezoelectric element 23 and a fourth piezoelectric element 24, and the four piezoelectric elements are all arranged in On the XY plane, the transmission member 30 is located above the piezoelectric element, and the lens module 40 and the transmission member 30 are distributed along the Z-axis direction.
  • the first piezoelectric element 21 and the second piezoelectric element 22 are arranged along the Y-axis direction and are symmetrical about the X-axis
  • the second piezoelectric element 22 and the third piezoelectric element 23 are arranged along the X-axis direction and are symmetrical about the Y-axis
  • the third piezoelectric element 23 and the fourth piezoelectric element 24 are arranged along the Y-axis direction and are symmetrical about the X-axis
  • the fourth piezoelectric element 24 and the first piezoelectric element 21 are arranged along the X-axis direction and are symmetrical about the Y-axis .
  • the transmission member 30 drives the lens module 40 to swing with the Z axis as the symmetry axis and along the X axis direction through frictional force.
  • the lens module 40 can take the Z axis as the axis of symmetry and swing along the Y axis direction. By exchanging the excitation signals applied to the second piezoelectric element 22 and the fourth piezoelectric element 24 , the moving direction of the lens module 40 can be changed.
  • the piezoelectric element 24 and the first piezoelectric element 21 apply signals such as sinusoidal excitation electrical signals with a phase difference of 90°, and the lens module 40 will take the Z axis as the axis of symmetry and rotate around the Z axis.
  • the processor can calculate the working voltage of the piezoelectric element that needs to be input according to the shaking angle of the camera module detected by the gyroscope, and can select and shake according to the data of the shaking direction.
  • the piezoelectric elements in opposite directions are used as working piezoelectric elements, that is, four piezoelectric elements work together according to different shaking angles.
  • the processor inputs a working voltage to the working piezoelectric element, so that the working piezoelectric element is deformed, and then different positions of the transmission member 30 are deformed and vibrated.
  • the lens module 40 is driven to rotate at any angle (X-axis direction, Y-axis direction, or Z-axis direction), thereby realizing displacement/rotation compensation for the lens module 40 .
  • the lens module 40 can be pushed to rotate at a large angle along the X-axis, Y-axis and Z-axis directions to realize the anti-shake function.
  • the moving direction and moving angle of the lens module 40 can also be controlled by inputting other types of excitation electrical signals, which are not limited here.
  • the side wall of the groove 11 and the inner peripheral surface of the transmission member 30 are arc surfaces extending along the axial direction of the lens module 40, respectively.
  • 40 includes: a lens holder 41 and a lens 42, the lens holder 41 can be a cylindrical part, a part of the outer peripheral surface of the lens holder 41 is an arc-shaped friction surface, and the arc-shaped friction surface can fit with the inner peripheral surface of the bracket 10 and the transmission member 30 of.
  • the arc-shaped friction surface can be connected with the arc-shaped surface of the transmission member 30 alone, or connected with the arc-shaped surface of the bracket 10 and the arc-shaped surface of the transmission member 30 at the same time, which is not limited herein.
  • the lens 42 is arranged in the lens holder 41, and the lens holder 41 can support and position the lens 42, and the lens 42 can move synchronously with the lens holder 41.
  • the lens holder 41 can drive the lens 42 to carry out
  • the multi-degree-of-freedom movement such as moving along the X-axis, Y-axis and Z-axis, can effectively prevent the lens holder 41 from interfering with other components such as the holder 10 and the transmission member 30 during the movement.
  • the relationship between the convex portion 51 and the lens holder 41 can be improved. Therefore, the stability of the lens module 40 during the movement process can be improved.
  • the overall size of the camera module 100 can also be reduced, so that the utilization rate of the internal space of the electronic device in which the camera module 100 is installed is high.
  • a fixing bracket 60 is further provided above the transmission member 30 , the fixing bracket 60 is arranged on the first side of the bracket 10 , and the fixing bracket 60 has a through hole, that is, the fixing bracket 60 It can be formed as a hollow annular member, and the lens module 40 faces the through hole to view the view through the through hole.
  • the transmission member 30 can be fixed on the fixing bracket 60 by screws.
  • the inner wall surface of the fixing bracket 60 is formed as an arc-shaped surface, and the arc-shaped surface of the fixing bracket 60, the arc-shaped surface of the transmission member 30 and the arc-shaped surface of the bracket 10 can respectively smoothly transition, and the entire arc formed between the three can be smoothly transitioned.
  • the shape of the shaped surface can be approximately the same as the shape of the arc-shaped friction surface of the lens holder 41 , which is beneficial to the rotation of the lens holder 41 .
  • the lens holder 41 includes a lens holder body 411 and a friction plate 413 , the lens holder body 411 is a cylindrical part, and the outer peripheral surface of the lens holder 41 is provided with an annular recess extending along its own circumferential direction.
  • the groove 412 and the friction plate 413 are arranged in the annular groove 412, wherein the installation method of the friction plate 413 includes but is not limited to snap connection, bonding and the like.
  • the outer peripheral surface of the friction member is an arc-shaped friction surface. It should be noted that, as shown in FIG.
  • the shape of the friction plate 413 corresponds to the shape of the annular groove 412 , which not only facilitates the installation of the friction plate 413 , but also facilitates the relationship between the edge of the friction plate 413 and the lens holder body. Arc transition between 411. As shown in FIG. 7 , as shown in FIG. 7 , the shape of the friction plate 413 corresponds to the shape of the annular groove 412 , which not only facilitates the installation of the friction plate 413 , but also facilitates the relationship between the edge of the friction plate 413 and the lens holder body. Arc transition between 411. As shown in FIG.
  • the length of the outer peripheral surface of the friction plate 413 is greater than the length of the inner peripheral surface of the transmission member 30 , that is, when the lens module 40 moves, the friction plate 413 moves along the At least one of the two ends in the up-down direction can extend beyond the end of the transmission member 30, which can not only increase the rotation angle of the lens module 40, but also prevent the lens module 40 from being separated from the transmission member 30, thereby preventing the lens module 40 from being separated. Unable to reset.
  • the driving member 20 and the transmission member 30 cooperate to transmit the driving force to the lens module 40 to drive the lens module 40 to move.
  • the driving member 20 adopts a piezoelectric element having an inverse piezoelectric effect
  • the piezoelectric element can make the transmission member 30 vibrate in the ultrasonic frequency range, and make the vibrating transmission member 30 drive the lens module 40 to move through friction.
  • the camera module 100 according to the embodiment of the present application not only has the advantages of high power, high efficiency, and good movement stability of the lens module 40; The anti-shake effect of angle rotation improves the quality of photography; and also has the advantage of taking up less space.
  • the space utilization rate inside the electronic device can be improved.
  • the electronic device may be any electronic device suitable for including the camera module 100, such as a mobile phone, a notebook computer, a tablet computer, or a wearable device.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Studio Devices (AREA)
  • Adjustment Of Camera Lenses (AREA)
  • Lens Barrels (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

本申请公开了一种摄像模组，包括：支架，支架具有凹槽；驱动件，所述驱动件设于所述支架的第一侧；传动件，所述传动件设置于所述凹槽内壁，所述传动件与所述驱动件电连接；镜头模组，所述镜头模组的至少一部分设于所述凹槽内，所述镜头模组与所述传动件活动连接，所述传动件用于带动所述镜头模组活动。

Description

摄像模组
相关申请的交叉引用
本申请要求享有于2020年12月08日提交的中国专利申请202011425602.3的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请属于电子设备技术领域，具体涉及一种摄像模组。
背景技术
随着电子产品的不断更新和迭代，摄像头模组发挥着越来越重要的作用，摄像头模组拍照性能的好坏，成为影响电子产品整体性能的关键因素。在拍照或拍视频时，摄像头模组不可避免的会发生抖动，亟需开发一款具有防抖效果的摄像头模组。
发明内容
本申请旨在提供一种摄像模组，至少解决背景技术的问题之一。
本申请实施例提出了一种摄像模组，包括：支架，所述支架具有凹槽；驱动件，所述驱动件设于所述支架的第一侧；传动件，所述传动件设置于所述凹槽内壁，所述传动件与所述驱动件电连接；镜头模组，所述镜头模组的至少一部分设于所述凹槽内，所述镜头模组与所述传动件活动连接，所述传动件用于带动所述镜头模组活动。
在本申请的实施例中，采用驱动件和传动件相配合，在摄像模组晃动时，驱动件能够通过传动件驱动镜头模组作出和摄像模组晃动方向相反的运动，抵消因振动造成的晃动，使摄像模组具有防抖功能。
本申请实施例的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请实施例的实践了解到。
附图说明
本申请的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据本申请的摄像模组的实施例的示意图；
图2是沿图1中A-A线的剖面图；
图3是图2中圈示的B部的放大图；
图4是根据本申请实施例的摄像模组的传动件与压电元件之间装配的一个角度的示意图；
图5是根据本申请实施例的摄像模组的传动件与压电元件之间装配的又一个角度的示意图；
图6是沿图4中C-C线的局部剖面图；
图7是根据本申请实施例的摄像模组的镜头模组的结构示意图；
图8是根据本申请实施例的摄像模组的镜头模组沿X轴或Y轴方向旋转的示意图；
图9是根据本申请的一实施例的摄像模组的4个压电元件的装配示意图。
附图标记：
摄像模组100；
支架10；凹槽11；
驱动件20；第一压电元件21；第二压电元件22；第三压电元件23；第四压电元件24；
传动件30；安装通道31；第一段体32；第二段体33；
镜头模组40；
镜头支架41；镜头支架本体411；环形凹槽412；摩擦片413；
镜头42；
凸起组件50；凸起部51；
固定支架60；柔性线路板70。
具体实施方式
下面将详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下，还可以获得其他实施例，这些实施例都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，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，因此不能理解为对本申请的限制。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
下面结合图1至图9描述根据本申请实施例的摄像模组100。
如图1至图4所示，根据本申请实施例的摄像模组100包括支架10、 驱动件20、传动件30和镜头模组40。
具体而言，支架10具有凹槽11，驱动件20设于支架10的第一侧，传动件设置于凹槽11内壁，传动件30与驱动件20电连接。镜头模组40的至少一部分设于凹槽11内，镜头模组40与传动件30活动连接，传动件30用于带动镜头模组40活动。
换言之，根据本申请实施例的摄像模组100主要由能够起到支承作用的支架10、能够产生驱动力的驱动件20、与驱动件20相连且能够传递驱动力的传动件30、与传动件30相连且能够在驱动力的作用下活动的镜头模组40组成。
具体地，支架10具有凹槽11，镜头模组40的至少一部分设于凹槽11内，镜头模组40能够伸出凹槽11对周围环境进行拍摄。驱动件20设于支架10的第一侧，且能够通过传动件30传递驱动力以驱动镜头模组40相对于支架10活动。传动件30与驱动件20电连接，传动件30能够带动镜头模组40活动。
其中需要说明的是，传动件30与支架10之间的安装方式包括但不限于以下情况：
在一种实施例中，传动件30环绕凹槽11的内壁面一周设置，传动件30与镜头模组40之间的接触区域可组成环形区域，能够对镜头模组40的外侧面进行驱动。
在另一种实施例中，传动件30设于凹槽11的内壁面的多个安装位置，多个安装位置可相对于镜头模组40对称或不对称设计。在多个安装位置相对于镜头模组40对称时，多个安装位置的数量可以为两个或四个。为了便于描述，设定支架10沿xy平面延伸，凹槽11沿z方向延伸。
在安装位置为两个时，两个安装位置中的一个可位于x轴，两个安装位置中的另一个可位于y轴，可以实现镜头模组40绕x方向和绕y方向的活动。
在安装位置为四个时，四个安装位置中的两个安装位置可位于x轴，四个安装位置中的另外两个安装位置可位于y轴。并且四个安装位置可相对于镜头模组40对称设置。需要说明的是，通过设置偶数个对称设置的安 装位置，能够有利于镜头模组40沿着某一方向旋转时，能够精确控制镜头模组40的摆动幅度。
此外，根据本申请实施例的摄像模组100的传动件30不限定设置在凹槽11内壁上，还可以设置在凹槽11的内壁面的延长线上。例如，如图2所示，镜头模组40的下部位于凹槽11内，传动件30设于在支架10的上方且位于凹槽11的内壁面的延长线上，并能够与镜头模组40的中部连接以带动镜头模组40活动。
由此，根据本申请实施例的摄像模组100，采用驱动件20和传动件30相配合，在摄像模组100晃动时，驱动件20能够通过传动件30驱动镜头模组40作出和摄像模组100晃动方向相反的运动，抵消因振动造成的晃动，使摄像模组100具有防抖功能。
根据本申请的一个实施例，传动件30包括依次连接的第一段体32和第二段体33，第一段体32设于支架10的第一侧，驱动件20设于支架10与第一段体32之间。第二段体33设置于凹槽11内壁，第二段体33的背离所属第一段体的一端与镜头模组40活动连接。其中需要说明的是，第二段体33可以设置在凹槽11的内壁上，也可以设置在凹槽11的内壁的延长线上，在此不作限定。
在本实施例中，通过将传动件30设计为第一段体32和第二段体33相配合的结构，既能保证第一段体32与驱动件20之间的接触面积，还能够保证第二段体33与镜头模组40之间的有效接触，从而提高了镜头模组40防抖的稳定性和精度。
进一步地，第一段体32与第二段体33一体成型，通过采用一体成型的结构具有便于加工生产的优点。此外，第二段体33为环形结构，不仅能够提高对于镜头模组40的支撑力的均衡性，还能够扩大传动件30与镜头模组40之间的接触面积，有利于实现镜头模组40的多自由度和多角度的活动。
可选地，通过将支架10设置为与传动件30同轴设置的环形件，不仅能够对传动件30起到支承作用，还避免了支架10对镜头模组40造成活动阻碍。
为了便于描述，下面将传动件30和支架10定义为沿水平方向延伸。
在支架10的上方设有凹槽11和驱动件20，在驱动件20的上方设有与其接触的第一段体32，驱动件20能够通过第一段体32、第二段体33将驱动力传递至镜头模组40，可以通过摩擦力驱动镜头模组40活动。需要说明的是，第二段体33也可以与驱动件20直接接触，在此不作限定。
在本申请的一些具体实施方式中，如图4至图6所示，传动件30的内周面设有沿其自身的周向设置的凸起组件50，通过设置凸起组件50能够提高传动件30和镜头模组40之间的摩擦力。凸起组件50包括多个凸起部51，多个凸起部51沿传动件30的周向间隔开分布，每个凸起部51分别相对于传动件30的内表面向内凸出，每个凸起部51的内表面分别止抵于镜头模组40。驱动件能够将驱动力传递至凸起部51，例如在驱动力是震动力时，对应的凸起部51也能够震动。也就是说，通过设置凸起部51，不仅能够扩大传动件30的变形程度，还能够通过将传动件30与镜头模组40之间的摩擦力分区，提高对于镜头模组40的活动角度和活动范围的控制精度。
需要说明的是，通过使每个凸起部51与镜头模组40止抵，一方面，能够进一步提高传动件30和镜头模组40之间的摩擦力，利于驱动镜头模组40活动；又一方面，使传动件30向镜头模组40传递驱动力时，能够保证镜头模组40的运行稳定性。
换句话说，如图4所示，在传动件30为环形件时，环形件的环形中空区域形成为安装通道31，环形件的内壁面设有朝向安装通道31的中心轴线方向延伸的凸起部51，凸起部51伸出环形件的内壁面。凸起部51的数量为多个，多个凸起部51可以沿环形件的内壁面间隔开分布，多个凸起部51可以围合为环形。在传动件30的高边沿上下方向延伸时，相邻两个凸起部51之间的间隙可以设置为沿上下方向延伸，利于传动件30驱动镜头模组40沿Z轴方向旋转。
需要说明的是，当传动件30位于驱动件20的上方时，在驱动件20的部分位置发生震动时，传动件30上与驱动件上的震动位置对应的凸起部51会同步发生活动。
进一步地，凸起组件50的数量为至少两个，凸起组件50的数量可以为奇数或者偶数，凸起组件50的数量也不作限定。至少两个凸起组件50沿凹槽11的轴向间隔开分布。如图2、图4至图6所示，凸起组件50的数量为两个，在传动件30的高边沿上下方向延伸时，两个凸起组件50可以沿上下方向间隔开分布，两个凸起组件50之间的间隙沿水平方向延伸，利于传动件30驱动镜头模组40沿X轴、Y轴方向活动。
可选地，如图4至图6所示，凸起部51为沿传动件30的轴向延伸的长条形，例如梯形或者长方形等。相邻两个凸起组件50的多个凸起部51在传动件30的轴向上的位置一一对应，利于通过驱动件20精确控制传动件30向镜头模组40施加的作用力的方向，防止两个凸起组件50相互之间产生干涉。
在本申请的一些具体实施方式中，驱动件20为压电元件。
下面结合附图对根据本申请实施例的压电元件进行详细说明。
如图2所示，可将支架10的上方定义为支架10的第一侧。也就是说，在支架10的上方可设有压电元件，并将传动件30设于压电元件的上方。在传动件30为环形件时，传动件30内可形成有安装通道31，镜头模组40的至少一部分可设于安装通道31内，镜头模组40的外周面能够与传动件30的内周面连接。由此，对压电元件通电，压电元件能够通过振动产生驱动力，传动件30能够与压电元件相连且能够传递驱动力，从而能够使镜头模组40在驱动力的作用下活动。其中，支架10可选为金属件，能够提高振动幅度。
需要说明的是，压电元件包括具有压电效应的压电振动材料，压电振动材料能够将机械能和电能相互转换。压电振动材料主要包括压电陶瓷和压电纤维等。需要说明的是，压电效应是指某些晶体，在机械应力的作用下成比例地产生电荷或在外电场的作用下成比例地产生几何变形，压电效应可以分为正压电效应和逆压电效应。其中，逆压电效应指的是在没有外力作用下，当一电场施加在压电晶体上时，其内部正负电荷中心发生移位，同时又会导致材料发生机械变形，形变的大小与电场强度成正比。
也就是说，在对根据本申请实施例的摄像模组100的压电元件输入工 作电压时，压电元件能够发生变形，从而产生振动，进而带动与压电元件相连的传动件30的至少一部分在超声频率范围内振动。需要说明的是，通过控制压电元件的工作位置以及向压电元件输入的工作电压，能够使压电元件的不同位置发生不同程度的变形，例如产生环形行波。
此外，如图4所示，在装配时，将镜头模组40的下端安装于安装通道31内，镜头模组40的上端与安装通道31的上端之间的相对位置关系不作限定。当压电元件通电后，压电元件能够发生变形和产生振动，一方面，由于传动件30分别与压电元件和镜头模组40相连，因此传动件30能够将压电元件产生的驱动力传递至镜头模组40，镜头模组40能够活动；又一方面，由于镜头模组40的外周面与传动件30的内周面相连，因此，传动件30能够对镜头模组40具有支承以及限位的作用，传动件30在振动的过程中与镜头模组40之间产生摩擦力，摩擦力能够作为驱动力来推动镜头模组40在安装通道31内活动。
需要说明的是，根据本申请实施例的摄像模组100可用于电子设备，电子设备包括但不限于手机。根据本申请实施例的摄像模组100在拍照或拍摄视频的过程中，还可具有防抖的效果。可选地，根据本申请实施例的摄像模组100还包括陀螺仪和处理器，首先，通过陀螺仪能够检测镜头模组40的抖动方向以及抖动角度；随后，处理器能够接受到陀螺仪发送的数据，并可根据抖动角度计算需要输入压电元件的工作电压，并可根据抖动方向选择压电元件的工作位置；接着，处理器对压电元件输入工作电压，使压电元件的不同位置产生不同程度的变形，进而使传动件30的不同位置变形振动，通过摩擦带动镜头模组40在预设角度活动，从而对发生镜头模组40发生振动的光路进行位移或旋转补偿，实现减轻照片模糊的效果。
根据本实施例，通过传动件30将具有逆压电效应的压电元件与镜头模组40间接相连，并通过控制向压电元件输入的工作电压，使传动件30发生振动，处于振动状态的传动件30能够通过摩擦能够带动镜头模组40活动。与现有技术相比，一方面，根据本申请实施例的摄像模组100具有防抖效果，能够驱动镜头模组40进行位移/旋转补偿；又一方面，根据本申请实施例的摄像模组100中与压电元件相连的柔性线路板70不会被较大程 度的拉扯，无需在镜头模组40的一侧另外设置有能够收纳呈S形布置的柔性线路板70的线盒，具有节约空间的优点，从而使安装有本申请实施例的摄像模组100的电子设备的内部空间利用率高；再一方面，由于采用压电元件与传动件30相配合，传动件30能够产生超声频率范围内的振动，能够扩大镜头模组40的活动范围，例如旋转角度范围。
进一步地，压电元件为片状，压电元件的第一侧止抵支架10，压电元件的第二侧止抵传动件30。如图2和图3所示，在将压电元件的下方定义为第一侧，上方定义为第二侧时，压电元件为片状结构，在压电元件的下方设有支架10，上方设有传动件30。压电元件的上端面能够与传动件30止抵，压电元件的下端面能够与支架10止抵。其中，压电元件与传动件30之间的连接方式可包括压紧、粘接或者焊接等。
可选地，压电元件为多个，例如图5中的4个。多个压电元件依次首尾相连形成与支架10和传动件30的形状相对应的环形，通过至少两个压电元件相配合以控制对应的传动件30与镜头模组40之间的摩擦力方向，提高驱动力的传递效率。需要说明的是，压电元件的数量包括但不限于4个，例如6个。并且压电元件的数量可以为奇数或偶数，在此不作限定。
下面结合附图以压电元件的数量为四个对摄像模组100的活动进行说明。
如图9所示，将4个压电元件分为第一压电元件21、第二压电元件22、第三压电元件23和第四压电元件24，4个压电元件均设置在XY平面上，传动件30位于压电元件的上方，镜头模组40和传动件30沿Z轴方向分布。其中第一压电元件21和第二压电元件22沿着Y轴方向设置且关于X轴对称、第二压电元件22和第三压电元件23沿着X轴方向设置且关于Y轴对称、第三压电元件23和第四压电元件24沿着Y轴方向设置且关于X轴对称、第四压电元件24和第一压电元件21沿着X轴方向设置且关于Y轴对称。
当分别对第一压电元件21和第三压电元件23施加两相相位差为90°的正弦激励电信号时，第二压电元件22和第四压电元件24不工作，传动件30将振动，传动件30通过摩擦力驱动镜头模组40以Z轴为对称轴且沿 着X轴方向摆动。通过交换向第一压电元件21和第三压电元件23施加的激励信号，可以改变镜头模组40的运动方向。
同理，当分别对第二压电元件22和第四压电元件24施加两相相位差为90°的正弦激励电信号时，第一压电元件21和第三压电元件23不工作，镜头模组40能够以Z轴为对称轴且沿着Y轴方向摆动。通过交换向第二压电元件22和第四压电元件24施加的激励信号，可以改变镜头模组40的运动方向。
当分别对第一压电元件21和第二压电元件22、或第二压电元件22和第三压电元件23、或第三压电元件23和第四压电元件24、或第四压电元件24和第一压电元件21施加两相相位差为90°的正弦激励电信号等信号，镜头模组40将以Z轴为对称轴并绕着Z轴方向旋转。
在此基础上，在拍照或拍视频的过程中，处理器能够根据陀螺仪检测得到的摄像头模组的抖动角度计算需要输入压电元件的工作电压，并可根据抖动方向的数据来选择与抖动方向相反位置的压电元件作为工作压电元件，即根据不同抖动角度，四个压电元件配合工作。随后，处理器对工作压电元件输入工作电压，使工作压电元件变形，进而使传动件30的不同位置变形振动。通过摩擦，带动镜头模组40在任意角度(X轴方向、Y轴方向、或Z轴方向)旋转，进而实现对于镜头模组40的位移/旋转补偿。
由此可见，通过多个压电元件相配合，能够推动镜头模组40沿着X轴、Y轴和Z轴方向大角度旋转，实现防抖功能。
需要说明的是，还可以通过输入其他类型的激励电信号控制镜头模组40的活动方向和活动角度，在此不作限定。
根据本申请的一个实施例，如图2和图8所示，凹槽11的侧壁和传动件30的内周面分别为沿镜头模组40的轴向延伸的弧形面，镜头模组40包括：镜头支架41和镜头42，镜头支架41可为柱形件，镜头支架41的一部分外周面为弧形摩擦面，弧形摩擦面能够与支架10和传动件30的内周面贴合的。需要说明的是，弧形摩擦面能够单独与传动件30的弧形面相连、或者同时与支架10的弧形面和传动件30的弧形面相连，在此不作限定。镜头42设于镜头支架41内，通过镜头支架41能够对镜头42起到支撑和 定位作用，镜头42能够与镜头支架41同步运动。
需要说明的是，通过在镜头支架41的外周面设置弧形摩擦面，相对于现有技术的矩形镜头支架而言，不仅能够减小镜头支架41的尺寸，还利于镜头支架41带动镜头42进行多自由度运动，例如沿着X轴、Y轴和Z轴活动，能够有效防止镜头支架41在活动过程中与支架10、传动件30等其他部件之间产生干涉。同时，通过将支架10和传动件30的内周面设置为弧形面，将凸起部51朝向镜头支架41的一侧也设置为弧形面，能够提高凸起部51与镜头支架41之间的贴合性，进而能够提高镜头模组40在运动过程中的稳定性。此外，还能够缩小摄像模组100的整体尺寸，从而使安装摄像模组100的电子设备的内部空间利用率高。
另外，如图1和图2所示，在传动件30的上方还设有固定支架60，固定支架60设于支架10的第一侧，固定支架60具有通孔，也就是说，固定支架60可形成为中空环形件，镜头模组40朝向通孔以透过通孔取景。可选地，传动件30可通过螺钉固定在固定支架60上。固定支架60的内壁面形成为弧形面，且固定支架60的弧形面、传动件30的弧形面和支架10的弧形面之间分别能够圆滑过渡，三者之间组成的整个弧形面的形状与镜头支架41的弧形摩擦面的形状可大致相同，有利于镜头支架41旋转。
可选地，如图7所示，镜头支架41包括镜头支架本体411和摩擦片413，镜头支架本体411为柱形件，镜头支架41的外周面设有沿其自身的周向延伸的环形凹槽412，摩擦片413设于环形凹槽412内，其中摩擦片413的安装方式包括但不限于卡接、粘接等。进一步地，摩擦件的外周面为弧形摩擦面。需要说明的是，如图2所示，在凸起组件50的数量为两个且沿上下方向间隔开分布时，摩擦片413沿上下方向的至少一部分位于两个凸起组件50之间，不仅能够增大摩擦性能，还能够提高摄像模组100活动时的稳定性。
在本申请的一些具体实施方式中，如图7所示，摩擦片413的形状与环形凹槽412的形状相对应，不仅便于摩擦片413的安装，而且利于摩擦片413的边缘与镜头支架本体411之间的圆弧过渡。如图7所示，在传动件30的轴向上，摩擦片413的外周面的长度大于传动件30的内周面的长 度，也就是说，在镜头模组40活动时，摩擦片413沿上下方向的两端中的至少一端能够超出传动件30的端部，不仅能够增大镜头模组40的转动角度，还能够防止镜头模组40与传动件30之间脱离，避免镜头模组40无法复位的情况。
总而言之，根据本申请实施例的摄像模组100，通过驱动件20和传动件30相配合，将驱动力传递至镜头模组40，带动镜头模组40活动。在驱动件20采用具有逆压电效应的压电元件时，压电元件能够使传动件30产生在超声频率范围内的振动，并使振动的传动件30通过摩擦驱动镜头模组40活动。根据本申请实施例的摄像模组100不仅具有动力大、效率高以及镜头模组40活动稳定性好等优点；而且能够实现镜头模组40在X轴方向、Y轴方向和Z轴方向的大角度旋转防抖效果，提高拍照质量；并且还具有占用空间小的优点，在本申请实施例的摄像模组100应用于电子设备时，能够提升电子设备内部的空间利用率。
根据本申请实施例的电子设备可以是任何适于包含摄像模组100的电子设备，如手机、笔记本电脑、平板电脑或者可穿戴设备等。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本申请的实施例，本领域的普通技术人员可以理解：在不脱离本申请的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本申请的范围由权利要求及其等同物限定。

Claims (10)

  1. 一种摄像模组，包括：
    支架，所述支架具有凹槽；
    驱动件，所述驱动件设于所述支架的第一侧；
    传动件，所述传动件设置于所述凹槽内壁，所述传动件与所述驱动件电连接；
    镜头模组，所述镜头模组的至少一部分设于所述凹槽内，所述镜头模组与所述传动件活动连接，所述传动件用于带动所述镜头模组活动。
  2. 根据权利要求1所述的摄像模组，其中，所述传动件包括依次连接的第一段体和第二段体：
    所述第一段体设于所述支架的第一侧，所述驱动件设于所述支架与所述第一段体之间；
    所述第二段体设置于所述凹槽内壁，所述第二段体的背离所述第一段体的一端与所述镜头模组活动连接。
  3. 根据权利要求2所述的摄像模组，其中，所述第一段体与所述第二段体一体成型，且所述第二段体为环形结构。
  4. 根据权利要求1所述的摄像模组，其中，所述传动件的内周面设有沿其自身的周向设置的凸起组件，所述凸起组件包括多个凸起部，多个所述凸起部沿所述传动件的周向间隔开分布，每个所述凸起部分别相对于所述传动件的内表面向内凸出，每个所述凸起部的内表面分别止抵于所述镜头模组。
  5. 根据权利要求4所述的摄像模组，其中，所述凸起组件的数量为至少两个，所述至少两个凸起组件沿所述凹槽的轴向间隔开分布。
  6. 根据权利要求4或5所述的摄像模组，其中，所述凸起部为沿所述传动件的轴向延伸的长条形，相邻两个所述凸起组件的多个所述凸起部在所述传动件的轴向上的位置一一对应。
  7. 根据权利要求1所述的摄像模组，其中，所述驱动件为压电元件。
  8. 根据权利要求7所述的摄像模组，其中，所述压电元件为多个，多个所述压电元件依次首尾相连形成与所述传动件的形状相对应的环形。
  9. 根据权利要求1所述的摄像模组，其中，所述凹槽的侧壁和所述传动件的内周面分别为沿所述镜头模组的轴向延伸的弧形面，所述镜头模组包括：
    镜头支架，所述镜头支架的一部分外周面为弧形摩擦面，所述弧形摩擦面和所述传动件的内周面贴合；
    镜头，所述镜头设于所述镜头支架内。
  10. 根据权利要求1所述的摄像模组，还包括：
    固定支架，所述固定支架设于所述支架的第一侧，所述固定支架具有通孔，所述镜头模组朝向所述通孔。
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