阅读说明：本技术 镜头模组 (Lens module ) 是由 朱银龙 李刚 于 2019-09-11 设计创作，主要内容包括：本发明提供一种镜头模组,包括自动对焦组件、光学防抖组件、连接自动对焦组件和光学防抖组件的弹性支撑组件以及用于驱动光学防抖组件移动的驱动装置；自动对焦组件具有两个相对设置的第一侧壁和连接在两第一侧壁之间的两第二侧壁；驱动装置包括设置在第一侧壁外侧和第二侧壁外侧的两个绑线夹以及设置在两绑线夹之间的形状记忆合金线,每个绑线夹包括设于光学防抖组件的第一导电板和自第一导电板弯折延伸的第二导电板,形状记忆合金线包括分别连接至相邻两个绑线夹的第二导电板的末端和位于两个末端之间的驱动端,驱动端与相邻的第一侧壁和第二侧壁的连接处配合连接。本发明的第二导电板弯折于第一导电板设置,可减少镜头模组在水平方向尺寸。(The invention provides a lens module, which comprises an automatic focusing assembly, an optical anti-shake assembly, an elastic supporting assembly and a driving device, wherein the elastic supporting assembly is connected with the automatic focusing assembly and the optical anti-shake assembly; the automatic focusing assembly is provided with two oppositely arranged first side walls and two second side walls connected between the two first side walls; drive arrangement is including setting up two wiring clamps in the first side wall outside and the second side wall outside and setting up the shape memory alloy wire between two wiring clamps, every wiring clamp is including the first current conducting plate of locating optics anti-shake subassembly and the second current conducting plate of buckling the extension from first current conducting plate, shape memory alloy wire is including the end that is connected to the second current conducting plate of two adjacent wiring clamps respectively and the drive end that is located between two ends, the drive end is connected with the junction cooperation of adjacent first lateral wall and second lateral wall. The second current-conducting plate is bent on the first current-conducting plate, so that the size of the lens module in the horizontal direction can be reduced.)

1. A lens module is characterized by comprising an automatic focusing assembly, an optical anti-shake assembly arranged at an interval with the automatic focusing assembly in the optical axis direction of a lens, an elastic supporting assembly connected with the automatic focusing assembly and the optical anti-shake assembly, and a driving device used for driving the optical anti-shake assembly to move in the direction vertical to the optical axis; the automatic focusing assembly is provided with two oppositely arranged first side walls and two oppositely arranged second side walls which are connected between the two first side walls, and the first side walls and the second side walls form a ring; drive arrangement is including setting up the first lateral wall outside with two tie wire clamps in the second lateral wall outside and setting are in two shape memory alloy line between the tie wire clamp, every the tie wire clamp is including locating optics anti-shake subassembly orientation the first current conducting plate of auto focus subassembly one side and certainly first current conducting plate to the second current conducting plate that auto focus subassembly direction was buckled and is extended, two the second current conducting plate of tie wire clamp sets up respectively in the outside of adjacent first lateral wall and second lateral wall, shape memory alloy line is including being connected to adjacent two the end of the second current conducting plate of tie wire clamp and the drive end that is located between two ends, the drive end is adjacent first lateral wall with the junction cooperation of second lateral wall is connected.

2. The lens module as claimed in claim 1, wherein the second conductive plate is disposed perpendicular to the first conductive plate.

3. The lens module as claimed in claim 1, wherein a plane defining the largest area of the second conductive plate is a main plane, and a normal direction of the main plane is toward the first sidewall or the second sidewall.

4. The lens module as claimed in claim 1, wherein the joint between the driving end and the first sidewall and the second sidewall is fixed by dispensing.

5. The lens module as claimed in claim 1, wherein a mounting post is protruded from a side of the optical anti-shake assembly facing the auto-focus assembly, a mounting hole is formed through the first conductive plate, and the mounting post is inserted into the mounting hole.

6. The lens module as claimed in claim 5, wherein a side of the optical anti-shake assembly facing the auto-focus assembly is recessed with a groove for receiving the first conductive plate, the groove has a bottom groove surface opposite to the auto-focus assembly, and the mounting post is protruded from the bottom groove surface.

7. The lens module as claimed in claim 1, wherein the auto-focusing element is provided with a first step and a second step at a joint of the first side wall and the second side wall, the first step being located on an outer side wall of one end of the optical anti-shake element, the second step being located on a side of the first side wall, the second step being closer to the optical anti-shake element than the first step, the second step having a thickness perpendicular to the optical axis greater than the first step, the driving end being fixed to a side of the first step away from the optical anti-shake element.

8. The lens module as claimed in claim 1, wherein the number of the driving units is four, two of the binding clips are disposed at the middle of the outer side of the first sidewall and the middle of the outer side of the second sidewall, and each of the driving terminals is connected to a junction of the first sidewall and the second sidewall.

9. The lens module as claimed in claim 1, wherein the elastic supporting member includes at least two elastic supporting members, the elastic supporting members include a first connecting end, a second connecting end and an elastic supporting body connected between the first connecting end and the second connecting end, the first connecting end is connected to the auto-focusing assembly, and the second connecting end is connected to the optical anti-shake assembly.

10. The lens module as claimed in claim 9, wherein the elastic supporting body includes a first extending portion having an end connected to the first connecting end and a second extending portion having an end connected to the second connecting end, the end of the first extending portion away from the first connecting end is connected to the end of the second extending portion away from the second connecting end, the first extending portion and the second extending portion are perpendicular to the optical axis, and the first extending portion and the second extending portion are perpendicular to each other.

11. The lens module as claimed in claim 10, wherein the auto-focus assembly includes a first base and a first circuit board fixed on a side of the first base facing the optical anti-shake assembly, the optical anti-shake assembly includes a second base and a second circuit board fixed on a side of the second base away from the auto-focus assembly, the first connecting end is electrically connected to the first circuit board, and the second connecting end is electrically connected to the second circuit board.

12. The lens module as claimed in claim 10, wherein the elastic supporting member has four first connecting ends, four second connecting ends, and four first connecting ends, the four first connecting ends being equally spaced along a circumference of the auto-focus assembly, the four second connecting ends being equally spaced along a circumference of the optical anti-shake assembly, each of the first connecting ends being connected to an adjacent second connecting end through the elastic supporting body in a counterclockwise or clockwise direction along the optical axis.

13. The lens module as recited in claim 11, further comprising a cover plate disposed on a side of the second circuit board away from the second base, wherein the second circuit board includes a first electrical board mounted on the second base and a second electrical board extending from the first electrical board and bending toward a side away from the second base, the cover plate includes a first protection plate attached to the first electrical board and a second protection plate attached to the second electrical board, and the first protection plate is connected to the second protection plate.

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of optical imaging of a lens, in particular to a lens module.

[ background of the invention ]

In recent years, high-performance lens modules are mounted in portable terminals such as smartphones and tablet personal computers. The high performance lens module generally has an Auto Focusing (AF) function and an Optical Image Stabilization (OIS) function. The AF component is arranged in the OIS component through a plurality of elastic supporting pieces and is driven by a plurality of shape memory alloy wires to realize the functions of automatic focusing and optical anti-shake, the high-performance lens module enables the lens to move along the optical axis direction of the lens during automatic focusing, and enables the lens to move along the optical axis direction vertical to the lens during the optical anti-shake function.

[ summary of the invention ]

The present invention is directed to a lens module, which solves the problem of an over-sized lens.

The technical scheme of the invention is as follows:

in order to achieve the above object, the present invention provides a lens module, which includes an auto-focusing assembly, an optical anti-shake assembly spaced from the auto-focusing assembly in an optical axis direction of a lens, an elastic supporting assembly connecting the auto-focusing assembly and the optical anti-shake assembly, and a driving device for driving the optical anti-shake assembly to move in a direction perpendicular to the optical axis; the automatic focusing assembly is provided with two oppositely arranged first side walls and two oppositely arranged second side walls which are connected between the two first side walls, and the first side walls and the second side walls form a ring; drive arrangement is including setting up the first lateral wall outside with two tie wire clamps in the second lateral wall outside and setting are in two shape memory alloy line between the tie wire clamp, every the tie wire clamp is including locating optics anti-shake subassembly orientation the first current conducting plate of auto focus subassembly one side and certainly first current conducting plate to the second current conducting plate that auto focus subassembly direction was buckled and is extended, two the second current conducting plate of tie wire clamp sets up respectively in the outside of adjacent first lateral wall and second lateral wall, shape memory alloy line is including being connected to adjacent two the end of the second current conducting plate of tie wire clamp and the drive end that is located between two ends, the drive end is adjacent first lateral wall with the junction cooperation of second lateral wall is connected.

Further, the second conductive plate is disposed perpendicular to the first conductive plate.

Further, a surface of the second conductive plate having the largest area is defined as a main plane, and a normal direction of the main plane is toward the first side wall or toward the second side wall.

Furthermore, the connection position of the driving end and the first side wall and the connection position of the driving end and the second side wall are fixedly connected through dispensing.

Furthermore, the optical anti-shake assembly is convexly provided with a mounting column towards one side of the automatic focusing assembly, the first current-conducting plate penetrates through the mounting hole, and the mounting column is inserted into the mounting hole in a clamping manner.

Furthermore, one side of the optical anti-shake assembly, which faces the automatic focusing assembly, is concavely provided with a groove for accommodating the first current-conducting plate, the groove is provided with a bottom groove surface which is opposite to the automatic focusing assembly, and the mounting column is convexly arranged on the bottom groove surface.

Furthermore, the outer side wall of the automatic focusing assembly, which is close to one end of the optical anti-shake assembly, is positioned at the joint of the first side wall and the second side wall, and a first step and a second step which is arranged in a stepped manner with the first step are convexly arranged on the outer side wall, the second step is close to the optical anti-shake assembly relative to the first step, the thickness of the second step in the direction perpendicular to the optical axis is larger than that of the first step in the direction perpendicular to the optical axis, and the driving end is fixed on one side, which is far away from the optical anti-shake assembly, of the first step.

Furthermore, the number of the driving devices is four, two binding clamps are arranged in the middle of the outer side of the first side wall and in the middle of the outer side of the second side wall, and each driving end is connected with the joint of one first side wall and one second side wall.

Furthermore, the elastic support assembly comprises at least two elastic support members, each elastic support member comprises a first connecting end, a second connecting end and an elastic support body connected between the first connecting end and the second connecting end, the first connecting end is connected with the automatic focusing assembly, and the second connecting end is connected with the optical anti-shake assembly.

Furthermore, the elastic support body comprises a first extension part and a second extension part, one end of the first extension part is connected with the first connecting end, one end of the second extension part is connected with the second connecting end, one end of the first extension part, which is far away from the first connecting end, is connected with one end of the second extension part, which is far away from the second connecting end, the first extension part and the second extension part are both perpendicular to the optical axis, and the first extension part and the second extension part are perpendicular to each other.

Furthermore, the automatic focusing assembly comprises a first base and a first circuit board fixed on one side of the first base facing the optical anti-shake assembly, the optical anti-shake assembly comprises a second base and a second circuit board fixed on one side of the second base far away from the automatic focusing assembly, the first connecting end is electrically connected with the first circuit board, and the second connecting end is electrically connected with the second circuit board.

Furthermore, the number of the elastic supporting pieces is four, the four first connecting ends are distributed at equal intervals along the circumferential direction of the automatic focusing assembly, the four second connecting ends are distributed at equal intervals along the circumferential direction of the optical anti-shake assembly, and each first connecting end is connected to the adjacent second connecting end through the elastic supporting body in the counterclockwise or clockwise direction along the optical axis.

Furthermore, the lens module is still including locating keeping away from of second circuit board the apron of second base one side, the second circuit board including install in the first electroplax of second base top and certainly first electroplax is towards keeping away from the second electroplax that second base one side is buckled and is extended, the apron include with the first guard plate of first electroplax laminating and with the second guard plate of second electroplax laminating, first guard plate with the second guard plate is connected.

The invention has the beneficial effects that:

according to the invention, the second conductive plate on the binding clip is bent to the first conductive plate, so that the size of the lens module in the horizontal direction (the direction vertical to the optical axis) can be reduced. Meanwhile, the two tail ends of the shape memory alloy wire are respectively connected with the two adjacent second conductive plates, the driving end of the shape memory alloy wire is fixed at the joint of the first side wall and the second side wall in the automatic focusing assembly, and the joint of the first side wall and the second side wall can be used as a stress point and can be used for supporting and fixing the shape memory alloy wire.

[ description of the drawings ]

Fig. 1 is a first schematic perspective view of a lens module according to an embodiment of the present invention;

fig. 2 is a first schematic view illustrating an exploded structure of a lens module according to an embodiment of the invention;

fig. 3 is a schematic diagram of an exploded structure of a lens module according to an embodiment of the invention;

fig. 4 is a schematic perspective view illustrating a second lens module according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view A-A of FIG. 4;

FIG. 6 is an enlarged partial schematic view of FIG. 5 at circle B;

FIG. 7 is a schematic perspective view of a wire binding clip according to an embodiment of the present invention;

FIG. 8 is a schematic perspective view of a shape memory alloy wire according to an embodiment of the present invention;

fig. 9 is a schematic perspective view of a second circuit board according to an embodiment of the invention;

fig. 10 is a schematic perspective view of a lens module provided in an embodiment of the present invention, with a bottom shell and a cover plate removed;

FIG. 11 is an enlarged partial schematic view taken at circle C in FIG. 10;

FIG. 12 is an enlarged partial schematic view taken at circle D in FIG. 10;

FIG. 13 is a schematic perspective view of an autofocus assembly and a resilient support assembly according to an embodiment of the present invention;

FIG. 14 is a schematic perspective view of an elastic support according to an embodiment of the present invention;

fig. 15 is a bottom view of the combination of the auto-focus assembly, the optical anti-shake assembly and the driving apparatus provided by the embodiment of the invention.

The reference numbers illustrate: 10. an auto-focus assembly; 11. a first base; 12. a first circuit board; 13. A first side wall; 14. a second side wall; 15. a first step; 16. a second step; 17. a fixing hole; 20. an optical anti-shake assembly; 21. a second base; 211. perforating; 22. a second circuit board; 221. a first electric plate; 222. a second electrode plate; 23. a groove; 24. a bottom groove surface; 25. mounting a column; 26. a second light-transmitting hole; 30. an elastic support member; 31. an elastic support member; 311. a first connection end; 312. a second connection end; 313. an elastic support body; 314. a first extension portion; 315. a second extension portion; 316. A third extension portion; 317. a fourth extension portion; 40. a drive device; 41. a shape memory alloy wire; 411. a terminal end; 412. a driving end; 413. a first shape memory alloy wire; 414. a second shape memory alloy wire; 415. a third shape memory alloy wire; 416. a fourth shape memory alloy wire; 42. binding a wire clamp; 421. a first conductive plate; 422. a second conductive plate; 423. mounting holes; 424. a principal plane; 50. a bottom case; 51. a concave cavity; 52. a first light-transmitting hole; 60. a cover plate; 61. a first guard plate; 62. a second guard plate; 63. and a third light hole.

[ detailed description ] embodiments

The invention is further described with reference to the following figures and embodiments.

It should be noted that all the directional indicators (such as upper, lower, inner, outer, top, bottom … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Referring to fig. 1 to 2, an embodiment of the invention provides a lens module, which includes an auto-focusing assembly 10, an optical anti-shake assembly 20, an elastic supporting assembly 30, a driving device 40 and a bottom shell 50, wherein the optical anti-shake assembly 20 is disposed at an interval from the auto-focusing assembly 10 in a direction of an optical axis S of a lens, the bottom shell 50 is disposed at a side of the auto-focusing assembly 10 away from the optical anti-shake assembly 20, the bottom shell 50 has a cavity 51, the auto-focusing assembly 10 is partially installed in the cavity 51, the elastic supporting assembly 30 is connected between the auto-focusing assembly 10 and the optical anti-shake assembly 20, and the driving device 40 is configured to drive the optical anti-shake assembly 20 to move in a direction perpendicular to the optical axis S.

Referring to fig. 1 to 6, the auto-focusing assembly 10 includes a first base 11 and a first circuit board 12 fixed on one side of the first base 11 facing the optical anti-shake assembly 20, the optical anti-shake assembly 20 includes a second base 21 and a second circuit board 22 fixed on one side of the second base 21 away from the auto-focusing assembly 10, the elastic support assembly 30 includes at least two elastic support members 31, each elastic support member 31 includes a first connection end 311, a second connection end 312 and an elastic support body 313 connected between the first connection end 311 and the second connection end 312, the first connection end 311 is electrically connected to the first circuit board 12 on the auto-focusing assembly 10, and the second connection end 312 is electrically connected to the second circuit board 22 on the optical anti-shake assembly 20. The elastic support 31 not only functions to support the auto-focus assembly 10, but also functions to electrically connect the first circuit board 12 and the second circuit board 22.

Referring to fig. 7, the auto-focusing assembly 10 has two first sidewalls 13 disposed opposite to each other and two second sidewalls 14 connected between the two first sidewalls 13 and disposed opposite to each other, wherein the first sidewalls 13 and the second sidewalls 14 form a ring shape. The driving device 40 includes two binding clips 42 disposed on the outer side of the first sidewall 13 and the outer side of the second sidewall 14, and a shape memory alloy wire 41 disposed between the two binding clips 42, each binding clip 42 includes a first conductive plate 421 disposed on one side of the optical anti-shake assembly 20 facing the autofocus assembly 10 (i.e., the bottom of the second circuit board 22) and a second conductive plate 422 bent and extended from the first conductive plate 421 toward the autofocus assembly 10, the second conductive plates 422 of the two binding clips 42 are disposed on the outer sides of the adjacent first sidewall 13 and second sidewall 14, respectively, and the second conductive plate 422 is disposed perpendicular to the first conductive plate 421, so that the size of the lens module in the horizontal direction (i.e., perpendicular to the optical axis S direction) can be reduced after assembly.

In a preferred embodiment, the surface of the second conductive plate 422 with the largest area is defined as a main plane 424, and a normal direction of the main plane 424 is disposed toward the first sidewall 13 or the second sidewall 14, so as to ensure that the size of the lens module in the horizontal direction can be reduced after the main plane is disposed.

Referring to fig. 8, the wire-binding clips 42 are electrically connected to the second circuit board 22, the shape memory alloy wire 41 includes ends 411 connected to the second conductive plates 422 of two adjacent wire-binding clips 42 and driving ends 412 located between the two ends 411, the driving ends 412 are connected to the adjacent joints of the first side wall 13 and the second side wall 14, i.e. corners, and the corners of the auto-focusing assembly 10 can be used as stress points for supporting and fixing the shape memory alloy wire 41, as shown in fig. 10, the temperature of the shape memory alloy wire 41 rises after being electrified, and taking the second shape memory alloy wire 414 in the shape memory alloy wire 41 as an example, the shape memory alloy wire 41 contracts to generate F (+ Y) and F (-X) pulling forces, and the resultant force provides a driving force in a 45-degree direction of + X/-Y for F.

Referring to fig. 9, as a preferred embodiment, a concave groove 23 for accommodating the first conductive plate 421 is concavely disposed on one side of the optical anti-shake assembly 20 facing the auto-focus assembly 10, the concave groove 23 has a bottom groove surface 24 disposed opposite to the auto-focus assembly 10, the bottom groove surface 24 is convexly disposed with a mounting post 25, the mounting post 25 is two convex posts disposed at an interval, the first conductive plate 421 has a mounting hole 423 formed therethrough, and the mounting post 25 is inserted into the mounting hole 423, so that the size of the lens module along the optical axis S direction can be reduced, the size of the lens module along the direction perpendicular to the optical axis S direction can be reduced, and the stability of the binding clip 42 fixed on the optical anti-shake assembly 20 can be enhanced by the cooperation between the mounting post 25 and the mounting hole 423.

Referring to fig. 10-13, the fixing end of the binding clip 42 is disposed right above the auto-focus assembly 10, so as to prevent the lens module from being increased in the direction perpendicular to the optical axis S, i.e. reduce the size of the lens module in the direction perpendicular to the optical axis S.

In a preferred embodiment, the outer sidewall of the auto-focusing assembly 10 near one end of the optical anti-shake assembly 20 is convexly provided with a first step 15 and a second step 16 at a corner, the second step 16 is arranged in a stepped manner with respect to the first step 15, the second step 16 is close to the optical anti-shake assembly 20 with respect to the first step 15, and the thickness of the second step 16 in the direction perpendicular to the optical axis S is greater than the thickness of the first step 15 in the direction perpendicular to the optical axis S, the driving end 412 is fixed to the side of the first step 15 away from the optical anti-shake device 20 by dispensing, the assembly process between the shape memory alloy wire 41 and the automatic focusing assembly 10 is simplified through dispensing, the manufacturing cost of the lens module is reduced, the connection part of the second step 16 and the first step 15 can be used as the stress point, and the side of the first step 15 facing the driving end 412 is an arc-shaped structure to reduce the abrasion between the shape memory alloy wire 41 and the first step 15.

In the present embodiment, the driving device 40 is provided with four binding-wire clamps 42, that is, eight binding-wire clamps 42 and four shape memory alloy wires 41, two binding-wire clamps 42 are respectively provided at the middle portion of the outer side of the first side wall 13 and the middle portion of the outer side of the second side wall 14, each driving end 412 is connected to the joint of one first side wall 13 and one second side wall 14, each shape memory alloy wire 41 is equally spaced along the circumferential direction of the auto-focusing assembly 10, and correspondingly, two binding-wire clamps 42 connected to the same shape memory alloy wire 41 are equally spaced along the circumferential direction of the optical anti-shake assembly 20.

When the shape memory alloy wire 41 is energized, the temperature rises, and the shape memory alloy wire 41 contracts to generate a driving force which forms an included angle of 45 ℃ with the corresponding first side wall 13 and second side wall 14, so that the automatic focusing assembly 10 moves along the direction perpendicular to the optical axis S, and the optical anti-shake function is further achieved. By providing four shape memory alloy wires 41, which are equally spaced along the circumference of the autofocus assembly 10, the autofocus assembly 10 can be moved in four directions.

Specifically, the second base 21 is formed with a through hole 211, and the elastic supporting body 313 passes through the through hole 211 to solder the second connecting end 312 to the second circuit board 22. The second connecting end 312 can be soldered to the second circuit board 22, so as to ensure the electrical connection between the elastic support and the optical anti-shake assembly 20, and ensure the connection stability between the elastic support and the optical anti-shake assembly 20, and further ensure the connection stability between the auto-focusing assembly 10 and the optical anti-shake assembly 20. In the embodiment, the second connecting end 312 extends from the elastic supporting body 313 toward the direction close to the optical axis S, so as to prevent an additional increase in the dimension of the lens module along the direction perpendicular to the optical axis S, i.e., reduce the dimension of the lens module along the direction perpendicular to the optical axis S.

In the embodiment of the present invention, the elastic support 31 is made of SUS304H, which has good corrosion resistance and welding performance, can completely ensure structural stability between the auto-focusing assembly 10 and the optical anti-shake assembly 20 in terms of rigidity, and has certain elasticity to prevent breakage.

The elastic supporting body 313 is disposed outside the auto-focusing assembly 10, the elastic supporting body 313 includes a first extending portion 314, a second extending portion 315, a third extending portion 316 and a fourth extending portion 317, the first extending portion 314 and the second extending portion 315 are both disposed perpendicular to the optical axis S, the first extension portion 314 and the second extension portion 315 are perpendicular to each other, the third extension portion 316 and the fourth extension portion 317 are both parallel to the optical axis S, one end of the third extension portion 316 is connected to the first connection end 311, the other end is connected to the first extension portion 314, one end of the fourth extension portion 317 is connected to the second connection end 312, the other end is connected to the second extension portion 315, one end of the first extension portion 314 far from the first connection end 311 is connected to one end of the second extension portion 315 far from the second connection end 312, the connecting mode has a simple structure, and simultaneously reduces the size of the lens module along the direction of the optical axis S.

The elastic supporting members 31 in this embodiment are provided with four first connecting ends 311 which are equally spaced along the circumference of the auto-focus assembly 10, four second connecting ends 312 which are equally spaced along the circumference of the optical anti-shake assembly 20, and each first connecting end 311 is connected to the adjacent second connecting end 312 through the elastic supporting body 313 in the counterclockwise or clockwise direction along the optical axis S.

In this embodiment, each elastic support body 313 and each shape memory alloy wire 41 are disposed in a corresponding position, and after one of the shape memory alloy wires 41 is completely contracted to realize the optical anti-shake function, the corresponding elastic support body 313 moves the auto-focusing assembly 10 back to the original position according to its own characteristics, that is, generates a restoring force to the auto-focusing assembly 10.

In this embodiment, the bottom shell 50 has a first light hole 52 formed in the middle thereof, the auto-focus assembly 10 has a fixing hole 17 for accommodating a lens, the optical anti-shake assembly 20 has a second light hole 26 for light to pass through, and the first light hole 52, the fixing hole 17 and the second light hole 26 are all disposed along the optical axis S direction.

The lens module further includes a cover plate 60 disposed on one side of the second circuit board 22 far away from the second base 21, the second circuit board 22 includes a first electric board 221 mounted on the top of the second base 21 and a second electric board 222 bent and extended from the first electric board 221 toward one side far away from the second base 21, the cover plate 60 includes a first protection plate 61 attached to the first electric board 221 and a second protection plate 62 attached to the second electric board 222, the first protection plate 61 is connected to the second protection plate 62, the cover plate 60 can protect the second circuit board 22, it is convenient for the pin on the second circuit board 22 to be bent, and the cover plate 60 is provided with a third light hole 63 matched with the second light hole 26.

The lens module of the invention moves in the plane vertical to the optical axis S of the lens in the following way:

for convenience of description, four shape memory alloy wires 41 are used in fig. 15, respectively: a first shape memory alloy wire 413, a second shape memory alloy wire 414, a third shape memory alloy wire 415, and a fourth shape memory alloy wire 416; wherein, the alpha direction is the 45-degree direction of the plane where X and Y are positioned, the beta direction is the 45-degree direction of the plane where X and Y are positioned, the delta direction is the 45-degree direction of the plane where X and Y are positioned, and the gamma direction is the 45-degree direction of the plane where X and Y are positioned;

referring to fig. 15, when the auto focus assembly 10 needs to move in the direction α, the second shape memory alloy wire 414 is only required to be electrically contracted, and the second shape memory alloy wire 414 generates a force in the direction α, so as to drive the auto focus assembly 10 to move in the direction α. Similarly, when the autofocus module 10 needs to move in the direction β, the first shape memory alloy wire 413 is only required to be electrically contracted, and the first shape memory alloy wire 413 generates a force in the direction β, so as to drive the autofocus module 10 to move in the direction β. The principle of movement of the autofocus assembly 10 in the γ and δ directions is the same as described above, and will not be described herein, and when the autofocus assembly 10 is square, the α/β/γ/δ direction is the same as the diagonal direction of the square.

The above are only embodiments of the present invention, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept of the present invention, but these are all within the scope of the present invention.