Lens drive mechanism

Abstract

The present invention discloses a lens drive mechanism, comprising a housing, a base, a carrier, a frame, an upper spring, a lower spring, a magnet group, and a drive circuit board. The frame has a central opening, the magnet group is disposed within the frame surrounding the central opening, the carrier is disposed within the central opening, the lower spring movably connects the frame and the lower surface of the carrier, and the upper spring movably connects the frame and the upper surface of the carrier. The drive circuit board is disposed below the frame and the carrier and is provided with a second drive coil. The second drive coil cooperates with the magnet group to drive the carrier and the frame to move in a plane perpendicular to the optical axis. The base is provided with a second groove for mounting a buffer member, and the bottom end of the frame is provided with a second connector. The second connector is inserted into the second groove. When the frame moves relative to the base, the second connector and the buffer member assist the frame in resetting. The present invention achieves the resetting operation of the frame and the carrier through the connection structure between the second connector and the buffer member.

Description

Technical Field

[0001] The present invention relates to the technical field of optical imaging equipment, and in particular to a lens driving mechanism. Background Art

[0002] With the widespread popularity of smartphones, the application scope of mobile phone cameras is becoming increasingly wider. However, most mobile phone cameras currently use components such as reeds for reset. After the carrier moves relative to the frame, or after the frame moves relative to the base, the reset process is usually not sensitive enough. Summary of the Invention

[0003] The object of the present invention is to provide a lens driving mechanism to solve the above-mentioned problems in the prior art.

[0004] To solve the above problem, according to one aspect of the present invention, a lens driving mechanism is provided, comprising a housing, a base, a carrier, a frame, an upper spring, a lower spring, a magnet group, and a driving circuit board. The housing and the base cooperate to form a chamber for accommodating the carrier, the frame, the upper spring, the lower spring, the magnet group, and the driving circuit board.

[0005] The frame has a central opening, the magnet group is arranged in the frame around the central opening, the carrier is arranged in the central opening, the lower spring piece movably connects the frame and the lower surface of the carrier, and the upper spring piece movably connects the frame and the upper surface of the carrier.

[0006] The driving circuit board is arranged below the frame and the carrier and is provided with a second driving coil, and the second driving coil cooperates with the magnet group to drive the carrier and the frame to move on a plane perpendicular to the optical axis, wherein

[0007] The base is provided with a second groove for installing a buffer member, and the bottom end of the frame is provided with a second connecting member, which is inserted into the second groove. When the frame moves relative to the base, the second connecting member and the buffer member assist the frame in resetting.

[0008] In one embodiment, the base has four end corners, each end corner is provided with a supporting protrusion, and each supporting protrusion is provided with at least one second groove.

[0009] In one embodiment, the second connecting member is formed by extending a certain distance from the lower surface of the frame, and the frame is further provided with a third connecting member, which is integrally formed with the second connecting member and extends out of the frame to position the second connecting member during the casting process of the frame.

[0010] In one embodiment, the second connecting member is a metal rod, and the buffer member is damping glue.

[0011] In one embodiment, the carrier is provided with a first driving coil, which cooperates with the magnet group to drive the carrier to move along the optical axis, and the bottom end of the carrier is provided with a first groove to install a buffer member, and the bottom end of the frame is provided with a first connecting member, which is inserted into the first groove. When the carrier moves along the optical axis relative to the frame, the first connecting member and the buffer member assist the carrier in performing a reset movement.

[0012] In one embodiment, the first connecting member includes a first portion extending from an inner wall of the frame and a second portion extending from the first portion along the optical axis, wherein the second portion is configured to extend into the first groove.

[0013] In one embodiment, the frame is further provided with a third connecting member, which is integrally formed with the first connecting member and the second connecting member and extends out of the frame to position the first connecting member and the second connecting member during the casting process of the frame.

[0014] In one embodiment, two position sensors are provided at the bottom of the base, and the two position sensors and the driving circuit board are electrically connected to the built-in circuit of the base. The two position sensors are respectively cooperated with two different magnet groups to monitor the position of the lens movement in a plane perpendicular to the optical axis.

[0015] In one embodiment, a notch is provided on the outer side of the supporting protrusion, a suspension wire connection hole is provided in the notch, and the lower end of the suspension wire is connected to the suspension wire connection hole.

[0016] In one embodiment, the driving circuit board is provided with two sensor avoidance holes to avoid the two sensors.

[0017] The base and the frame of the present invention are connected via a second connecting member, and the reset operation of the frame and the carrier is achieved through the connection structure of the second connecting member and the buffer member. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional exploded view of a lens driving mechanism according to an embodiment of the present invention.

[0019] Figure 2 It is a perspective view of a frame according to one embodiment of the present invention.

[0020] Figure 3 It is a three-dimensional diagram of a carrier according to an embodiment of the present invention.

[0021] Figure 4is another perspective view of a carrier according to an embodiment of the present invention.

[0022] Figure 5 is another perspective view of a frame according to an embodiment of the present invention.

[0023] Figure 6 It is a three-dimensional diagram of a base according to one embodiment of the present invention.

[0024] Figure 7 1 is a perspective view of a driving circuit board according to an embodiment of the present invention. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the present invention can be more clearly understood. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0026] In the following description, for the purpose of illustrating the various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the relevant art will recognize that the embodiments may be practiced without one or more of these specific details. In other cases, well-known devices, structures, and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0027] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0028] In the following description, in order to clearly show the structure and working mode of the present invention, many directional words will be used for description, but words such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and should not be understood as restrictive terms.

[0029] This application generally relates to a lens drive mechanism that can be used in terminal products such as mobile phones and tablet computers to cooperate with lenses to realize functions such as taking photos and recording videos. For the convenience of description, this application introduces the concept of "optical axis" to represent the propagation direction of light in an optical element. This concept is an abstract concept and does not refer to the existence of a physical axis. The direction along the optical axis is called the longitudinal direction.

[0030] It should be noted that the features shown in the drawings of this application may belong to one embodiment or to different embodiments, as long as there is no conflict between these features. To save space, this application may use the same drawing to illustrate different embodiments. In other words, the same drawing of this application can be used to illustrate features of different embodiments.

[0031] Figure 1 1 is a perspective exploded view of a lens driving mechanism according to an embodiment of the present invention. Figure 2 is a perspective view of a frame 40 according to an embodiment of the present invention, Figure 3 is a perspective view of a carrier 30 according to an embodiment of the present invention, as shown in FIG. Figure 1-3 As shown, in one embodiment, the lens drive mechanism 100 includes a housing 10, a base 20, a carrier 30, a frame 40, an upper spring 50, a lower spring 60, and a magnet group 70. The housing 10 and the base 20 cooperate to form a chamber to accommodate the carrier 30, the frame 40, the upper spring 50, the lower spring 60, and the magnet group 70. It should be noted that the chamber here can be an open space or a closed space, and can have a regular shape or an irregular shape, which is not limited herein. The carrier 30 is used to mount the lens A and is wound with a first drive coil 31. The frame 40 has a central opening 41, and the carrier 30 is disposed in the central opening 41. The magnet group 70 is disposed in the frame 40 around the central opening 41 and cooperates with the first drive coil to drive the carrier 30 and the lens A in the carrier 30 to move relative to the frame 40 along the optical axis to achieve an optical zoom function.

[0032] The lower spring 60 movably connects the frame 40 to the lower surface of the carrier 30, while the upper spring 60 movably connects the frame 40 to the upper surface of the carrier 30. This allows the carrier 30 to be reset after movement relative to the frame 40. A first groove 32 is provided at the bottom end of the carrier 30 to accommodate a buffer 33. A first connector 42 is provided at the bottom end of the frame 40 and is inserted into the first groove 32. When the carrier 30 moves relative to the frame 40 along the optical axis, the first connector 42 and the buffer 33 assist in the reset of the carrier 30. This arrangement allows for faster and more sensitive reset of the carrier 30.

[0033] like Figure 2-3 As shown, the dimensions of the first groove 32 are larger than those of the first connecting member 42. That is, both the length and width of the first groove 32 are larger than the length and width of the first connecting member 42, allowing the first connecting member 42 to move within a certain range within the first groove 32. Optionally, the first connecting member 42 is a metal rod, and the buffer 33 is a damping rubber. The metal rod is inserted into the damping rubber, and when the carrier 30 moves relative to the frame 40 along the optical axis, the elastic deformation of the damping rubber can assist in the carrier's reset operation.

[0034] Reference Figure 2 The first connecting member 42 includes a first portion 421 extending from the inner wall of the frame 40 and a second portion 422 extending from the first portion 421 along the optical axis. The second portion 422 is configured to extend into the first groove 32. In this case, it is only necessary for the second portion 422 to be movable within the first groove 32. Therefore, the size of the second portion 422 only needs to be smaller than the size of the first groove 32, while the size of the first portion 421 can be larger or smaller than the size of the first groove 32. Optionally, the first portion 421 extends inward in a direction perpendicular to the inner wall of the frame 40, and the second portion 422 extends upward in a direction perpendicular to the first portion 421.

[0035] In one embodiment, Figure 2 As shown, the frame 40 is further provided with a third connecting member 43, which is integrally formed with the first connecting member 42 and extends out of the outer side wall of the frame 40 to position the first connecting member 42 during the casting process of the frame 40. The frame 40 of the present invention can be formed by casting, and the first connecting member 42 is preferably a metal rod. The metal rod is pre-placed in a mold and is positioned by the third connecting member 43 when the frame 40 is cast in the mold. The third connecting member 43 is preferably a metal rod and is integrally formed with the first connecting member 42, which reduces processing costs and improves the strength of the first connecting member 42. In one embodiment, the third connecting member 43 is arranged substantially parallel to the first portion 421 of the first connecting member 42. Preferably, the third connecting member 43 and the first portion 421 of the first connecting member 42 are located in the same plane.

[0036] Figure 4 is another perspective view of a carrier 30 according to an embodiment of the present invention. Figure 3-4 As shown, in one embodiment, referring to Figure 3-4 The interior of the carrier 30 is provided with a central opening 36 of A for mounting the lens, and a carrier body portion is formed around the central opening 36. A groove for mounting the first drive coil 31 is provided on the outer wall of the body portion, and a terminal 33 is provided near the groove. A wire is wound around the terminal 33, one end of the wire is electrically connected to the first drive coil 31, and the other end of the wire is electrically connected to the upper spring sheet, thereby electrically connecting the external circuit to the first drive coil 31 through the upper spring sheet.

[0037] Figure 5 is another perspective view of a frame 40 according to an embodiment of the present invention, optionally, as Figure 5 and Figure 4As shown, the inner sidewall of the frame 40 is provided with a limiting groove 44, and the terminal 33 of the carrier 30 cooperates with the limiting groove 44 to limit the position of the carrier 30. In other words, when the carrier 30 moves relative to the frame along the optical axis, the limiting groove 44 restricts the movement of the carrier 30 relative to the frame 40 in a plane perpendicular to the optical axis.

[0038] In one embodiment, Figure 3 and Figure 4 As shown, the top of the carrier 30 is provided with a top protrusion 341, and the bottom of the carrier is provided with a bottom protrusion 342. When the carrier moves along the optical axis, the top protrusion 341 and the bottom protrusion 342 can play a role in preventing collision. Optionally, the first groove 32 is provided adjacent to the bottom protrusion 342. For example, the sidewalls of the first groove 32 can extend downward and become coplanar with the outer wall of the bottom protrusion 342.

[0039] Return to reference Figure 1 In one embodiment, the lens driving mechanism 100 further includes suspension wires 80. For example, the lens driving mechanism 100 may include four sets of suspension wires, each of which is disposed at the four corners of the lens driving mechanism 100. Optionally, the lower ends of the suspension wires are disposed at the four corners of the base 20, and the upper ends of the suspension wires are connected to upper springs 50. Optionally, there are two upper springs, each of which includes a frame connection portion 51 connected to the frame 40 and a carrier connection portion 52 connected to the carrier 30. The frame connection portion 51 and the carrier connection portion 52 are connected by an elastic member 53. The carrier connection portion 52 is provided with a wiring connection plate 521 for connecting to the wires on the terminal posts 33 of the carrier 30. The frame connection portion 51 is provided with a wire mounting point for connecting to the top of the suspension wire 80.

[0040] Continue to refer to Figure 1 Optionally, a built-in circuit (not shown) is provided in the base 20. The built-in circuit is electrically connected to the suspension wire 80 and has an external circuit access terminal, thereby connecting the external circuit to the suspension wire 80 through the built-in circuit, and further electrically connecting to the upper spring 50 and the first drive coil 31 through the suspension wire 80. External current flows into the first drive coil 31 through the built-in circuit, the suspension wire 80, and the upper spring 50. After the first drive coil 31 is energized, it is subjected to the electromagnetic force in the magnetic field generated by the magnet group 70, thereby driving the carrier 30 to move along the optical axis to achieve optical zoom. During the movement of the carrier 30 along the optical axis, the buffer member 33, such as damping rubber, undergoes elastic deformation to assist the carrier in resetting, while the top protrusion provided at the top of the carrier 30 and the bottom protrusion provided at the bottom of the carrier act as an anti-collision device.

[0041] In another embodiment, the lens drive mechanism 100 may further include a drive circuit board 90, which may be, for example, a flexible printed circuit board (FPC). The drive circuit board 90 is provided with a second drive coil (not shown). The second drive coil cooperates with the magnet assembly 70 to drive the frame 40 and carrier 30 to move in a plane perpendicular to the optical axis, thereby achieving optical image stabilization. In other words, the lens drive mechanism 100 can implement both automatic zoom and optical image stabilization. When the magnet assembly 70 cooperates with the first drive coil 31, it drives the carrier 30 to move relative to the frame 40 along the optical axis within the frame 40, thereby achieving zoom. When the magnet assembly 70 cooperates with the second drive coil, since the magnet assembly 70 is fixedly mounted on the frame 40, the interaction between the second drive coil and the magnet assembly 70 drives the frame 40 to move in a plane perpendicular to the optical axis, thereby achieving optical image stabilization.

[0042] Optionally, a second drive coil may be provided on each of two mutually perpendicular sides of the driver circuit board 90. These second drive coils drive the frame 40 to move along two mutually perpendicular axes in a plane perpendicular to the optical axis, thereby achieving optical image stabilization. It should be noted that the frame 40 and the carrier 30 can move relative to each other along the optical axis, but are fixed to each other in a direction perpendicular to the optical axis. Therefore, when the frame 40 moves in a plane perpendicular to the optical axis, it drives the carrier 30 and the lens A fixedly mounted therein to move together, thereby achieving optical image stabilization.

[0043] It should be noted that although the accompanying drawings show the complete structure of the lens driving mechanism 100 and it has zoom and optical image stabilization functions, those skilled in the art should understand that, in different embodiments, the above-mentioned lens driving mechanism 100 may have only a zoom function, or may have both a zoom function and an optical image stabilization function.

[0044] Refer again below Figure 1-5 as well as Figure 6 and Figure 7 The lens driving mechanism of another embodiment of the present invention is introduced. It should be noted that: Figure 1-7 The features shown in are not necessarily the technical features of this embodiment. Figure 6 is a perspective view of a base 20 according to an embodiment of the present invention. Figure 7 This is a perspective view of a driver circuit board 90 according to an embodiment of the present invention. That is, in some embodiments, it may not be necessary to Figure 1-7 For example, in one embodiment, the lens drive mechanism can only realize the optical image stabilization function, while the zoom function is realized by other devices such as a pan / tilt head. In other words, the first drive coil may not be provided on the carrier 30.

[0045] like Figure 1-7 As shown, in another embodiment, a lens driving mechanism 100 includes a housing 10, a base 20, a carrier 30, a frame 40, an upper spring 50, a lower spring 60, a magnet assembly 70, and a driving circuit board 90. The housing 10 and the base 20 cooperate to form a chamber that accommodates the carrier 30, the frame 40, the upper spring 50, the lower spring 60, the magnet assembly 70, and the driving circuit board 90. The frame 40 has a central opening 41, and the magnet assembly 70 is disposed within the frame surrounding the central opening 41. The carrier 30 is disposed within the central opening 41. The lower spring 60 movably connects the frame 40 and the lower surface of the carrier 30. The upper spring 50 movably connects the frame 40 and the upper surface of the carrier 30. The upper spring 50 and the lower spring 60 are used for resetting the carrier 30.

[0046] The driver circuit board 90 is disposed below the frame 40 and carrier 30 and is equipped with a second drive coil. This second drive coil cooperates with the magnet assembly 70 to drive the carrier 30 and frame 40 to move in a plane perpendicular to the optical axis, thereby achieving optical image stabilization. The base 20 is provided with a second groove 21 for receiving the buffer 22. The bottom end of the frame 40 is provided with a second connector 45, which is inserted into the second groove 21. The base 20 and frame 40 are connected by the second connector 45. The connection between the second connector 45 and the buffer 22 enables the reset operation of the frame 40 and carrier 30. That is, when the frame 40 moves relative to the base 20, the second connector 45 and the buffer 22 assist in resetting the frame 40 and carrier 30.

[0047] In one embodiment, the base 20 has four corners, each of which is provided with a support protrusion 24, and each of which is provided with a second groove 21. Correspondingly, the bottom end of the frame 40 is provided with four second connecting members 45, each of which corresponds to a second groove 21. When the frame 40 is mounted on the base 20, the four second connecting members 45 of the frame 40 extend into the four second grooves 21 at the four corners of the base 20. Since each second groove 21 is provided with a buffer, the four second connecting members 45 extend into the buffer, thereby connecting the base 20 to the frame 40. After the frame 40 moves in a plane perpendicular to the optical axis, the frame 40 can quickly return to its original position due to the elastic action of the buffer and second connecting members 45.

[0048] Optionally, the second connecting member 45 is a metal rod, the buffer member 22 is a damping rubber, the damping rubber is arranged in the second groove 21, and the metal rod is inserted into the damping rubber. After the frame moves on a plane perpendicular to the optical axis, the frame can quickly return to its original position under the elastic action of the damping rubber and the metal rod.

[0049] In one embodiment, the second connector 45 extends downward a certain distance from the lower surface of the frame 40 and protrudes from the lower surface of the frame 40. Optionally, the frame 40 is further provided with a third connector 43, which is integrally formed with the second connector 45 and extends outside the frame to position the second connector 45 during the casting process of the frame 40. The frame 40 can be formed, for example, by casting. The second connector 45 is preferably a metal rod that is pre-placed in a mold and positioned by the third connector 43 when the frame 40 is cast into the mold. The third connector 43 is preferably also a metal rod and is integrally formed with the second connector 45, thereby reducing processing costs and increasing the strength of the second connector 45.

[0050] In one embodiment, the third connecting member 43 is arranged substantially perpendicular to the second connecting member 45. That is, the second connecting member 45 extends downward substantially parallel to the optical axis, and the third connecting member 45 extends toward the side of the frame 40 substantially perpendicular to the optical axis, thereby facilitating positioning of the second connecting member 45.

[0051] In one embodiment, a notch 241 is provided on the outer side of the supporting protrusion 24 , a suspension wire connection hole 242 is provided in the notch 241 , and the lower end of the suspension wire 80 is connected to the suspension wire connection hole 242 .

[0052] In one embodiment, Figure 1 As shown, the driver circuit board 90 is disposed below the frame 40 and carrier 30 and is equipped with a second drive coil. This second drive coil cooperates with the magnet assembly 70 to drive the carrier 30 and frame 40 to move in a plane perpendicular to the optical axis, thereby achieving optical image stabilization. The base 20 is provided with a second groove 21 for receiving the buffer 22. The bottom end of the frame 40 is provided with a second connector 45, which inserts into the second groove 21. When the frame 40 moves relative to the base 20, the second connector 45 and the buffer 22 assist in resetting the frame 40. The carrier 30 is provided with a first drive coil 31, which cooperates with the magnet assembly 70 to drive the carrier 30 along the optical axis. The bottom end of the carrier 30 is provided with a first groove 32 for receiving the buffer. The bottom end of the frame 40 is provided with a first connector 42, which inserts into the first groove 32. When the carrier 30 moves along the optical axis relative to the frame 40, the first connector 42 and the buffer assist in resetting the carrier 30. Optionally, the first connecting member 42 is a metal rod and the buffer member 33 is a damping rubber. The metal rod is inserted into the damping rubber, and when the carrier 30 moves relative to the frame 40 in the optical axis direction, the elastic deformation of the damping rubber can assist the carrier in resetting.

[0053] In one embodiment, the frame 40 further includes a third connector 43, which is integrally formed with the first connector 42 and the second connector 45 and extends outside the frame to position the first connector 42 and the second connector 45 during the frame casting process. Alternatively, the first connector 42, the second connector 45, and the third connector 43 are formed of metal rods and formed into an integral structure built into the end corners of the frame 40.

[0054] In one embodiment, Figure 1 As shown, two sensor mounting portions 23 are provided at the bottom end of the base 20 for mounting position sensors. The two position sensors and the driving circuit board are electrically connected to the built-in circuit 21 of the base. The two position sensors are respectively matched with two different magnet groups to monitor the position of the lens movement in a plane perpendicular to the optical axis.

[0055] In one embodiment, the driving circuit board 90 is provided with two sensor avoidance holes 92 to avoid two sensors.

[0056] While the preferred embodiments of the present invention have been described in detail above, it should be understood that, after reading the above teachings of the present invention, those skilled in the art may make various changes or modifications to the present invention. Such equivalents also fall within the scope of the claims appended hereto.

Claims

1. A lens driving mechanism, characterized in that: The lens driving mechanism includes a housing, a base, a carrier, a frame, an upper spring, a lower spring, a magnet group and a driving circuit board. The housing and the base cooperate to form a chamber for accommodating the carrier, the frame, the upper spring, the lower spring, the magnet group and the driving circuit board. The frame has a central opening, the magnet group is arranged in the frame around the central opening, the carrier is arranged in the central opening, the lower spring piece movably connects the frame and the lower surface of the carrier, and the upper spring piece movably connects the frame and the upper surface of the carrier. The driving circuit board is arranged below the frame and the carrier and is provided with a second driving coil, and the second driving coil cooperates with the magnet group to drive the carrier and the frame to move on a plane perpendicular to the optical axis, wherein The base is provided with a second groove for mounting a buffer member, and the bottom end of the frame is provided with a second connecting member, which is inserted into the second groove. When the frame moves relative to the base, the second connecting member and the buffer member assist the frame in resetting. The second connecting member is formed by extending a certain distance from the lower surface of the frame, and the frame is further provided with a third connecting member; The second connecting member is a metal rod, and the buffer member is a damping rubber; the second connecting member extends downward substantially in a direction parallel to the optical axis, and the third connecting member extends toward the side of the frame substantially in a direction perpendicular to the optical axis; The carrier is provided with a first driving coil, which cooperates with the magnet group to drive the carrier to move along the optical axis. The bottom end of the carrier is provided with a first groove for installing a buffer member. The bottom end of the frame is provided with a first connecting member, which is inserted into the first groove. When the carrier moves along the optical axis relative to the frame, the first connecting member and the buffer member assist the carrier in performing a reset movement. The first connecting member is a metal rod, comprising a first portion extending from an inner wall of the frame and a second portion extending from the first portion along the optical axis, wherein the second portion is configured to extend into the first groove; The third connecting member is arranged substantially parallel to the first portion of the first connecting member, and the third connecting member and the first portion of the first connecting member are located in the same plane; The third connecting member is a metal rod, which is formed integrally with the first connecting member and the second connecting member and extends out of the frame to position the first connecting member and the second connecting member during the casting process of the frame.

2. The lens driving mechanism according to claim 1, wherein: The base has four end corners, each end corner is provided with a supporting protrusion, and each supporting protrusion is provided with at least one second groove.

3. The lens driving mechanism according to claim 1, wherein: Two position sensors are provided at the bottom of the base. The two position sensors and the driving circuit board are electrically connected to the built-in circuit of the base. The two position sensors are respectively matched with two different magnet groups to monitor the position of the lens movement in a plane perpendicular to the optical axis.

4. The lens driving mechanism according to claim 2, wherein: A notch is provided on the outer side of the supporting protrusion, a suspension wire connecting hole is provided in the notch, and the lower end of the suspension wire is connected to the suspension wire connecting hole.

5. The lens driving mechanism according to claim 1, wherein: The driving circuit board is provided with two sensor avoidance holes to avoid the two sensors.

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