A driving device for realizing automatic focusing and anti-shake of a camera

Abstract

The present invention relates to a driving device for realizing automatic focusing and anti-shake of a camera, which has a support module and a moving part suitable for mounting and assembling a lens. The moving part is assembled on the support module through a suspension system to realize the movement of the moving part along the optical axis of the lens. It also includes first and second pairs of driving modules driven based on the principle of heat shrinkage of SMA wires. The driving directions of the first pair of driving modules and the second pair of driving modules for the moving part along the optical axis of the lens are opposite. And when the first pair of driving modules and the second pair of driving modules are independently controlled and driven on one side, the angle control of the lens around the X-axis and the Y-axis is realized, so as to achieve the optical anti-shake of the tilt adjustment type. By utilizing the characteristic of heat shrinkage of SMA wires to drive the automatic focusing of the lens, and by driving the movement on different sides of the lens to adjust the inclination angles of the lens around the X-axis and the Y-axis, the function of optical anti-shake is realized, and the use performance of the camera is improved. The product structure is light and small, and the control is simple and accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of cameras, and more particularly to the technical field of camera focusing applied to portable electronic devices such as mobile phones or tablet computers. Background Art

[0002] With the development and popularization of portable electronic devices such as mobile phones or tablet computers, the requirements for their attached camera functions have also been relatively improved. In order to achieve camera focusing and zooming, a driving device needs to be arranged in the narrow space of the camera to drive the lens to move along the optical axis. Due to the narrow space, the types of driving device structures that can be adopted are limited. In the existing technology cameras, the driving is mainly achieved by using a magnet and coil structure, but the structure is still relatively complex, and the volume is difficult to reduce, which cannot meet the requirements of product miniaturization.

[0003] At the same time, with the wide application of micro autofocus cameras in products such as mobile phones, cars, unmanned aerial vehicles, security monitoring, and smart homes. A common micro autofocus camera module is driven by a micro voice coil motor to move the lens up and down in the optical axis direction. When taking pictures, the voice coil motor is driven by a control chip to move, so as to achieve the autofocus function. When taking pictures or videos, the lens cannot remain absolutely stable due to human jitter or other reasons, resulting in a certain deviation. At this time, both the focusing and the light input amount of the camera will be affected, thereby affecting the quality of the image obtained by the camera. Generally, this kind of lens deflection occurs in the direction perpendicular to the optical axis, and the autofocus voice coil motor can only drive the lens to move in the optical axis direction, so the problem caused by such lens deflection cannot be solved. By adding an optical image stabilization actuator on the basis of the autofocus voice coil motor to drive the lens to move in two directions perpendicular to the optical axis, the above-mentioned deflection of the lens can be compensated, helping the camera to obtain better image quality. Such a micro camera motor is called a micro optical image stabilization camera motor.

[0004] A true micro optical image stabilization camera motor is a closed-loop control system. The gyroscope detects the lens jitter parameters and feeds them back to the camera module control chip. The latter calculates the correction angle or displacement according to the position information provided by the lens position sensor and issues an instruction to drive the image stabilization actuator to reach the specified position, so as to correct the displacement deflection of the lens caused by jitter, and make the pictures or videos obtain better image quality.

[0005] In the prior art, similar to driving the lens to move in the optical axis direction, the same method can also be adopted in the two directions perpendicular to the optical axis, that is, a micro voice coil motor is used to achieve it. In a common micro voice coil motor, a Lorentz force is generated by a current-carrying coil in a magnetic field to drive the lens to move; and to achieve optical image stabilization, the lens needs to be driven in at least two directions, which means that multiple coils need to be arranged, posing a certain challenge to the miniaturization of the overall structure. For this reason, a micro actuator for optical image stabilization using the principle of a voice coil motor generally integrates multiple coils on a circuit board, called an FP coil, to solve the size problem of the optical image stabilization actuator. However, the micro voice coil motor for optical image stabilization and the micro voice coil motor for autofocus are separated, and the lens is often installed in the micro voice coil motor for autofocus. To make the lens move in the direction perpendicular to the optical axis, that is, to make the lens move together with the micro voice coil motor for autofocus. Therefore, the assembly process of such a micro optical image stabilization camera module is more difficult, reducing the structural reliability of the entire micro motor, and it is also difficult to meet the requirements of product miniaturization. Summary of the Invention

[0006] The purpose of the present invention is to provide a driving device for realizing autofocus and anti-shake of a camera, meeting the requirements of product miniaturization, obtaining better focusing performance for driving the lens to move along the optical axis, and also realizing anti-shake.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A driving device for realizing autofocus and anti-shake of a camera, which has a support module and a moving part suitable for the lens to be installed and assembled. The moving part is assembled on the support module through a suspension system, and the suspension system guides the moving part to move along the optical axis of the lens; and it further includes a first pair of driving modules and a second pair of driving modules. The first pair of driving modules are symmetrically arranged on two opposite sides of the moving part, and the second pair of driving modules are symmetrically arranged on the remaining two opposite sides of the moving part; both the first pair of driving modules and the second pair of driving modules are driven based on the principle that the SMA wire shrinks when heated. The first pair of driving modules has a first driving arm to push the moving part to move along the optical axis of the lens, and the second pair of driving modules has a second driving arm to push the moving part to move along the optical axis of the lens. The driving directions of the first pair of driving modules and the second pair of driving modules for moving the moving part along the optical axis of the lens are opposite; and when the first pair of driving modules and the second pair of driving modules are independently controlled and driven on one side, the angle control of the lens around the X-axis and / or Y-axis is realized, achieving tilt-adjusted optical image stabilization.

[0009] Further, in the above solution, each unit in the first pair of driving modules includes two first driving arms, a first SMA wire, and two first conductive supports. The first conductive supports are fixed on the support module and electrically connected to the control system of the camera. The first conductive supports are provided with first elastic arms that can open and close. The two first driving arms and the first SMA wire form a movable triangular relationship. The two ends of the first SMA wire are respectively connected to the first elastic arms on the two first conductive supports. One end of the first driving arm is connected to the first elastic arm of the corresponding first conductive support, and the other end of the first driving arm is hinged to the moving part. Each unit in the second pair of driving modules includes two second driving arms, a second SMA wire, and two second conductive supports. The second conductive supports are fixed on the support module and electrically connected to the control system of the camera. The second conductive supports are provided with second elastic arms that can open and close. The two second driving arms and the second SMA wire form a movable triangular relationship. The two ends of the second SMA wire are respectively connected to the second elastic arms on the two second conductive supports. One end of the second driving arm is connected to the second elastic arm of the corresponding second conductive support, and the other end of the second driving arm is hinged to the moving part.

[0010] Further, in the above solution, the suspension system includes an upper spring and a lower spring. The upper spring and the lower spring are respectively connected between the upper and lower ends of the moving part and the support module. The upper spring includes an upper inner ring and a first flexible part extending from the outer periphery of the upper inner ring. The upper inner ring is fixedly connected to the upper end of the moving part, and the end of the first flexible part is fixedly connected to the support module. The lower spring includes a lower inner ring and a second flexible part extending from the outer periphery of the lower inner ring. The lower inner ring is fixedly connected to the lower end of the moving part, and the end of the second flexible part is fixedly connected to the support module.

[0011] Further, in the above solution, the support module is formed by stacking a bottom plate and an upper seat. The upper side of the upper seat facing away from the bottom plate is provided with an upward protruding pillar, and the pillar is adapted for installing the suspension system, the first pair of driving modules, and the second pair of driving modules. The circumferential side of the moving part is provided with a hinge part, and the hinge part is respectively hinged to the first driving arm of the first pair of driving modules and the second driving arm of the second pair of driving modules.

[0012] Further, in the above solution, the control system of the camera uses the resistance of the first SMA wire and / or the second SMA wire as feedback to realize closed-loop control of the movement of the lens.

[0013] Further, in the above solution, the two first driving arms and the first SMA wire form an isosceles triangular relationship, and the two second driving arms and the second SMA wire also form an isosceles triangular relationship. The first SMA wire and the second SMA wire are the bases of the isosceles triangles, and the first SMA wire and the second SMA wire are axially arranged up and down in a staggered manner relative to the moving part.

[0014] Further, the two first driving arms are integrally formed with the two first conductive supports respectively; the two second driving arms are integrally formed with the two second conductive supports respectively, and the first elastic arm and the second elastic arm are designed to be relatively inverted.

[0015] The present invention utilizes the characteristic that the SMA (Shape Memory Alloys) wire shrinks when heated to manufacture a driving device for a camera module of a mobile phone or a tablet computer, which can drive the lens to move up and down to achieve the automatic focusing function of the lens. By driving the movement of different sides of the lens, the inclination angles of the lens around the X-axis and the Y-axis can be adjusted, and thus the function of OIS (Optical Image Stabilization) can be achieved by adjusting the inclination angle of the lens, improving the performance of the camera. The SMA wire is small in size, effectively simplifies the driving structure, meets the requirements of product miniaturization, makes the product structure light and miniaturized, reduces the manufacturing cost, and at the same time is simple and accurate in control, suitable for popularization and utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attached Figure 1 is a schematic structural diagram of a preferred embodiment of the present invention;

[0017] Attached Figure 2 is Figure 1 a schematic structural diagram of the first pair of driving modules in the embodiment;

[0018] Attached Figure 3 is Figure 1 a schematic structural diagram of the second pair of driving modules in the embodiment;

[0019] Attached Figure 4 is Figure 1 a schematic structural diagram of the moving parts in the embodiment;

[0020] Attached Figure 5 is Figure 1 a schematic structural diagram of the support module in the embodiment;

[0021] Attached Figure 6 is Figure 1 a schematic structural diagram of the upper spring in the embodiment;

[0022] Attached Figure 7 is Figure 1 a schematic structural diagram of the lower spring in the embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will further illustrate the concept, specific structure and technical effects of the present invention with reference to the drawings, so as to fully understand the purpose, features and effects of the present invention.

[0024] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the present invention. In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0025] Referring to Figures 1 - 7 As shown, it is a schematic diagram of a preferred embodiment of the present invention. The present invention relates to a driving device for realizing automatic focusing and anti-shake of a camera, which has a support module 1 and a moving part 2 suitable for mounting and assembling a lens group. Of course, it also includes the control system and corresponding housing inherent in the camera device (not shown in the figure). The housing covers the moving part 2 and other corresponding components, having the functions of anti-collision and protection. The support module 1 is adaptively installed on a portable electronic device such as a mobile phone or a tablet computer. The moving part 2 is assembled on the support module 1 through a suspension system 3. The suspension system 3 guides the moving part 2 to move along the optical axis of the lens. An assembly hole is left in the middle of the moving part 2 to meet the assembly of the lens elements. Thus, the moving part 2 and the lens elements move together. And it also includes a first pair of driving modules 4 and a second pair of driving modules 5. The first pair of driving modules 4 are symmetrically arranged on two opposite sides of the moving part 2, and the second pair of driving modules 5 are symmetrically arranged on the remaining two opposite sides of the moving part 2. Both the first pair of driving modules 4 and the second pair of driving modules 5 are driven based on the principle of heat shrinkage of the SMA wire. The first pair of driving modules 4 has a first driving arm 41 to push the moving part 2 to move along the optical axis of the lens. The second pair of driving modules 5 has a second driving arm 51 to push the moving part 2 to move along the optical axis of the lens. The driving directions of the first pair of driving modules 4 and the second pair of driving modules 5 for moving the moving part 2 along the optical axis of the lens are opposite. In this way, by the heat shrinkage of the SMA wire driving the corresponding driving arm to push the moving part 2 to move along the optical axis of the lens and overcoming the reverse force of the suspension system 3, the lens can be driven to move up and down to realize the automatic focusing function of the lens. And by driving the movement of different sides of the lens, such as when the unilateral separate independent driving control in the first pair of driving modules 4 and the second pair of driving modules 5 (when the two current magnitudes are different), two asynchronous drives occur. Thus, the inclination angle of the lens around the X-axis and / or Y-axis can be adjusted, so as to realize the function of OIS (optical image stabilization) by adjusting the inclination angle of the lens. The suspension system 3 has corresponding reset ability during operation to cooperate with the first pair of driving modules 4 and the second pair of driving modules 5.

[0026] Referring to Figure 1 、 2As shown in Figures 3, in this embodiment, each unit in the first pair of driving modules 4 includes two first driving arms 41, a first SMA wire 42, and two first conductive supports 43. The first conductive support 43 is fixed on the support module 1 and electrically connected to the control system of the camera. The first conductive support 43 is provided with a first elastic arm 431 that can open and close. The two first driving arms 41 and the first SMA wire 42 form a movable triangular relationship. The two ends of the first SMA wire 42 are respectively connected to the first elastic arms 431 on the two first conductive supports 43. One end of the first driving arm 41 is connected to the first elastic arm 431 of the corresponding first conductive support 43, and the other end of the first driving arm 41 is hingedly connected to the moving part 2. Each unit in the second pair of driving modules 5 includes two second driving arms 51, a second SMA wire 52, and two second conductive supports 53. The second conductive support 53 is fixed on the support module 1 and electrically connected to the control system of the camera. The second conductive support 53 is provided with a second elastic arm 531 that can open and close. The two second driving arms 51 and the second SMA wire 52 form a movable triangular relationship. The two ends of the second SMA wire 52 are respectively connected to the second elastic arms 531 on the two second conductive supports 53. One end of the second driving arm 51 is connected to the second elastic arm 531 of the corresponding second conductive support 53, and the other end of the second driving arm 51 is hingedly connected to the moving part 2. The SMA wire (such as a nickel-titanium shape memory alloy wire) has a martensite structure at normal temperature. When the temperature rises, the SMA wire will undergo a phase change, changing from martensite to austenite, with a shorter length and a smaller resistance. When the temperature drops, the SMA wire will undergo a phase change from austenite to martensite, with a longer length and a larger resistance. These two processes can be repeated. During the phase change, the linearity between the temperature and strain of the SMA wire is not very good, but within a certain temperature range, its resistance and strain exhibit a linear characteristic. Therefore, by controlling the resistance of the SMA wire, its length can be accurately controlled, and the position and moving distance of the driving device can be calculated based on the resistance of the SMA wire. Thus, by energizing and heating the first SMA wire 42 and / or the second SMA wire 52 through the control system, the SMA wire will contract, changing the corresponding triangular relationship, causing the corresponding first driving arm 41 and / or the second driving arm 51 to push the moving part 2 to move along the optical axis of the lens, realizing the focusing and zooming of the camera. Utilizing the relative stability of the triangle, the moving part 2 can be stably and accurately driven to focus the lens.In this embodiment, the first pair of drive modules 4 are symmetrically arranged on two opposite sides of the moving part 2, and the second pair of drive modules 5 are symmetrically arranged on the remaining two opposite sides of the moving part 2. Moreover, the driving directions of the first pair of drive modules 4 and the second pair of drive modules 5 for moving the moving part 2 along the lens optical axis are opposite. When focusing, when different drive modules are powered on through the control system of the camera, the movement of different sides of the moving part 2 can occur. Thus, the inclination angles of the lens around the X-axis and Y-axis can be adjusted. Therefore, the function of OIS (optical image stabilization) can be realized by adjusting the inclination angle of the lens, improving the performance of the camera.

[0027] Refer to Figure 1 、 2 As shown in FIGS. 3, in this embodiment, further, two first driving arms 41 and a first SMA wire 42 form an isosceles triangle relationship, and two second driving arms 51 and a second SMA wire 52 also form an isosceles triangle relationship. The first SMA wire 42 and the second SMA wire 52 are the bases of the isosceles triangles, and the first SMA wire 42 and the second SMA wire 52 are axially vertically offset and horizontal relative to the moving part 2. This structure has a smoother movement and more accurate control. Further, the two first driving arms 41 are integrally formed with two first conductive supports 43 respectively, and the first driving arm 41 is continuously extended from the first elastic arm 431 of the first conductive support 43; the two second driving arms 51 are integrally formed with two second conductive supports 53 respectively, and the second driving arm 51 is continuously extended from the second elastic arm 531 of the second conductive support 53. The first elastic arm 431 and the second elastic arm 531 are designed to be relatively inverted, optimizing the structure for easy manufacturing and assembly. The first conductive support 43 and the second conductive support 53 are connected to the control system circuit of the camera by welding. The control system also uses the resistance of the first SMA wire 42 and the second SMA wire 52 as feedback to achieve closed-loop control of the movement of the lens. By comparing the deviation between the real-time resistance value and the target value, the movement deviation of the moving part 2 can be corrected, thereby forming a closed-loop control system with the resistance of the SMA wire as the feedback variable to obtain precise control.

[0028] Figures 1 - 7As shown in the figure, in this embodiment, the support module 1 is composed of a bottom plate 11 and an upper seat 12 stacked on top of each other. On the upper side of the upper seat 12 facing away from the bottom plate 11, there is a protruding pillar 121. The pillar 121 is adapted for the installation of the suspension system 3, the first pair of driving modules 4, and the second pair of driving modules 5. On the peripheral side of the moving part 2, there is a hinge part 21, which is respectively hinged to the first driving arm 41 of the first pair of driving modules 4 and the second driving arm 51 of the second pair of driving modules 5 to form a driving kinematic pair. The suspension system 3 includes an upper spring 31 and a lower spring 32. The upper spring 31 and the lower spring 32 are respectively connected between the upper and lower ends of the moving part 2 and the support module 1. The upper spring 31 includes an upper inner ring 311 and a first flexible part 312 extending from the outer periphery of the upper inner ring 311. The upper inner ring 311 is fixedly connected to the upper end of the moving part 2, and the end of the first flexible part 312 is fixedly connected to the support module 1. The lower spring 32 includes a lower inner ring 321 and a second flexible part 322 extending from the outer periphery of the lower inner ring 321. The lower inner ring 321 is fixedly connected to the lower end of the moving part 2, and the end of the second flexible part 322 is fixedly connected to the support module 1. This suspension system 3 has a simple structure, is convenient for manufacturing and assembling, has a small size, and effectively supports the suspension of the moving part 2 on the support module 1 and meets the requirement that the moving part 2 moves along the optical axis of the lens. In cooperation with the first pair of driving modules 4 and / or the second pair of driving modules 5, the automatic focusing of the lens is realized.

[0029] The present invention utilizes the characteristic that the SMA (Shape Memory Alloys) wire shrinks when heated to manufacture a driving device for a camera module of a mobile phone or a tablet computer. It can drive the lens to move up and down to realize the automatic focusing function of the lens. By driving the movement of different sides of the lens, the inclination angle of the lens around the X-axis and / or Y-axis can be adjusted. Thus, the function of OIS (Optical Image Stabilization) is realized by adjusting the inclination angle of the lens, improving the performance of the camera. The SMA wire has a small size and effectively simplifies the driving structure, meeting the requirements of product miniaturization, making the product structure light and miniaturized, reducing the manufacturing cost, and at the same time, the control is simple and accurate, which is suitable for popularization and utilization.

[0030] Although the preferred specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention should not be limited to the exact same structure and operation as described above and shown in the drawings. For those skilled in the art of this technology, without departing from the concept and scope of the present invention, many equivalent improvements and changes can still be made to the above embodiments through logical analysis, reasoning, or limited experiments. However, these improvements and changes should all fall within the scope of protection required by the present invention.

Claims

1. A driving device for realizing automatic focusing and anti - shake of a camera, Characterized in that: It has a support module (1) and a moving part (2) suitable for lens installation. The moving part (2) is assembled on the support module (1) through a suspension system (3), and the suspension system (3) guides the moving part (2) to move along the optical axis of the lens; and it also includes a first pair of driving modules (4) and a second pair of driving modules (5). The first pair of driving modules (4) are symmetrically arranged on two opposite sides of the moving part (2), and the second pair of driving modules (5) are symmetrically arranged on the remaining two opposite sides of the moving part (2); both the first pair of driving modules (4) and the second pair of driving modules (5) are driven based on the principle that the SMA wire shrinks when heated. The first pair of driving modules (4) has a first driving arm (41) to push the moving part (2) to move along the optical axis of the lens, and the second pair of driving modules (5) has a second driving arm (51) to push the moving part (2) to move along the optical axis of the lens. The driving directions of the first pair of driving modules (4) and the second pair of driving modules (5) for moving the moving part (2) along the optical axis of the lens are opposite; and when the first pair of driving modules (4) and the second pair of driving modules (5) are independently controlled and driven unidirectionally, the angle control of the lens around the X - axis and / or Y - axis is realized to achieve the optical anti - shake of the tilt - adjustment type; and the suspension system (3) has a reset function to cooperate with the first pair of driving modules (4) and the second pair of driving modules (5). An articulated part (21) is provided on the peripheral side of the moving part (2), and the articulated part (21) is respectively articulated with the first driving arm (41) and the second driving arm (51) to form a driving kinematic pair.

2. The driving device for realizing automatic focusing and anti - shake of a camera according to claim 1, Characterized in that: Each unit in the first pair of driving modules (4) includes two first driving arms (41), a first SMA wire (42), and two first conductive supports (43). The first conductive supports (43) are fixed on the support module (1) and electrically connected to the control system of the camera. The first conductive supports (43) are provided with first elastic arms (431) that can open and close. The two first driving arms (41) and the first SMA wire (42) form a movable triangular relationship. The two ends of the first SMA wire (42) are respectively connected to the first elastic arms (431) on the two first conductive supports (43). One end of the first driving arm (41) is connected to the first elastic arm (431) of the corresponding first conductive support (43), and the other end of the first driving arm (41) is hinged to the moving part (2). Each unit in the second pair of driving modules (5) includes two second driving arms (51), a second SMA wire (52), and two second conductive supports (53). The second conductive supports (53) are fixed on the support module (1) and electrically connected to the control system of the camera. The second conductive supports (53) are provided with second elastic arms (531) that can open and close. The two second driving arms (51) and the second SMA wire (52) form a movable triangular relationship. The two ends of the second SMA wire (52) are respectively connected to the second elastic arms (531) on the two second conductive supports (53). One end of the second driving arm (51) is connected to the second elastic arm (531) of the corresponding second conductive support (53), and the other end of the second driving arm (51) is hinged to the moving part (2).

3. The driving device for realizing automatic focusing and anti-shake of a camera according to claim 1, characterized in that: The suspension system (3) includes an upper spring (31) and a lower spring (32). The upper spring (31) and the lower spring (32) are respectively connected between the upper and lower ends of the moving part (2) and the support module (1). The upper spring (31) includes an upper inner ring (311) and a first flexible part (312) extending from the outer periphery of the upper inner ring (311). The upper inner ring (311) is fixedly connected to the upper end of the moving part (2), and the end of the first flexible part (312) is fixedly connected to the support module (1). The lower spring (32) includes a lower inner ring (321) and a second flexible part (322) extending from the outer periphery of the lower inner ring (321). The lower inner ring (321) is fixedly connected to the lower end of the moving part (2), and the end of the second flexible part (322) is fixedly connected to the support module (1).

4. The driving device for realizing automatic focusing and anti-shake of a camera according to claim 1 or 2 or 3, characterized in that: The support module (1) is formed by stacking a bottom plate (11) and an upper seat (12). The upper side of the upper seat (12) facing away from the bottom plate (11) is provided with an upward protruding pillar (121), and the pillar (121) is adapted for installing the suspension system (3), the first pair of driving modules (4), and the second pair of driving modules (5).

5. The driving device for realizing automatic focusing and anti-shake of a camera according to claim 2, characterized in that: The control system of the camera uses the resistance of the first SMA wire (42) and / or the second SMA wire (52) as feedback to achieve closed-loop control of the movement of the lens.

6. A driving device for realizing automatic focusing and anti-shake of a camera according to claim 2, characterized in that: The two first driving arms (41) and the first SMA wire (42) form an isosceles triangle relationship, and the two second driving arms (51) and the second SMA wire (52) also form an isosceles triangle relationship. The first SMA wire (42) and the second SMA wire (52) are the bases of the isosceles triangle, and the first SMA wire (42) and the second SMA wire (52) are arranged axially up and down in a staggered manner with respect to the moving part (2).

7. A driving device for realizing automatic focusing and anti-shake of a camera according to claim 2 or 6, characterized in that: The two first driving arms (41) are integrally formed with two first conductive supports (43) respectively; the two second driving arms (51) are integrally formed with two second conductive supports (53) respectively, and the first elastic arm (431) and the second elastic arm (531) are designed to be relatively inverted.

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