Driving device, camera module and electronic equipment

Abstract

The invention discloses a driving device, a camera module and electronic equipment. The driving device comprises a base, a supporting assembly, a carrier and a driving assembly, the carrier is supported on the base by the supporting assembly, the driving assembly comprises a first driving part and a second driving part which are arranged on the two opposite sides of the carrier, and the first driving part comprises a first magnet and a first coil which are oppositely arranged; the second driving part comprises a second magnet and a second coil which are oppositely arranged, in the optical axis direction, the magnetic pole distribution of the first magnet facing the first coil is the same as the magnetic pole distribution of the second magnet facing the second coil, and when the driving assembly works, the current directions in the first coil and the second coil are opposite when being observed in the direction perpendicular to the optical axis; or, in the optical axis direction, the magnetic pole distribution of the first magnet facing the first coil is opposite to the magnetic pole distribution of the second magnet facing the second coil, and when the driving assembly works, the current directions in the first coil and the second coil are the same when being observed in the direction perpendicular to the optical axis.

Description

Technical Field

[0001] The present application relates to the field of camera technology, and in particular to a driving device, a camera module and an electronic device. Background Art

[0002] With the popularity of mobile electronic devices, the related technologies of camera modules applied to mobile electronic devices to help users capture images have been rapidly developed and improved. In the market, consumers have increasingly higher and more diverse requirements for the functions of camera modules configured in mobile electronic devices (such as smart phones).

[0003] At present, the common optical focus function is mainly achieved by setting a driving device in the camera module to drive the optical lens to move along the optical axis. When the existing driving device realizes the optical focus function, it often increases the size of the device, which is contrary to the development trend of mobile devices to be thinner and lighter.

[0004] As consumer demands increase, the requirements for drive devices also increase. For example, the lateral dimensions of the drive device are required to be reduced. Therefore, how to further reduce the size of the drive device while meeting high performance has become an important direction for current technological development. Summary of the invention

[0005] One purpose of the present application is to realize an optical focus drive device and a camera module with a smaller size.

[0006] Another purpose of the present application is that the driving device of the present application can be applied to the front camera module of a mobile phone, so that the front camera module has an optical focus function while avoiding a significant increase in size.

[0007] To achieve the above objectives, the technical solution adopted in the present application is: a driving device, comprising: a base, a supporting assembly, and a carrier, wherein the carrier has a light-through hole penetrating along an optical axis, the carrier has a first corner and a second corner at a diagonal position, and the carrier is supported on the base by the supporting assembly at the first corner and the second corner; and A driving component, used for driving the carrier to move along the optical axis relative to the base, the driving component comprising a first driving part and a second driving part arranged on opposite sides of the carrier, the first driving part comprising a first magnet and a first coil arranged oppositely, the first magnet being arranged on one of the carrier or the base, and the first coil being arranged on the other of the carrier or the base; the second driving part comprising a second magnet and a second coil arranged oppositely, the second magnet being arranged on one of the carrier or the base, and the second coil being arranged on the other of the carrier or the base, Along the optical axis, the magnetic pole distribution of the first magnet facing the first coil is the same as the magnetic pole distribution of the second magnet facing the second coil, and when the driving component is working, the current directions in the first coil and the second coil are opposite when viewed along the direction perpendicular to the optical axis; or, Along the optical axis, the magnetic pole distribution of the first magnet facing the first coil is opposite to the magnetic pole distribution of the second magnet facing the second coil. When the driving component is working, when observed in a direction perpendicular to the optical axis, the current directions in the first coil and the second coil are the same.

[0008] Preferably, the carrier also includes a first side surface and a second side surface located on both sides of the first corner, and a third side surface and a fourth side surface located on both sides of the second corner, the first side surface is adjacent to the fourth side surface, the second side surface is adjacent to the third side surface, the first driving unit is arranged on the first side surface, the second driving unit is arranged on the third side surface, the first side surface and the third side surface are parallel to the second direction, the second side surface and the fourth side surface are parallel to the first direction, the first direction and the second direction are perpendicular to each other and are both perpendicular to the optical axis, and along the second direction, the first driving unit and the second driving unit are staggered.

[0009] Preferably, the supporting assembly comprises a first guide member and a second guide member which are arranged on the base and extend along the optical axis direction, the first guide member is located at the first corner, the second guide member is located at the second corner, the central axis of the first guide member along the optical axis direction and the central axis of the second guide member along the optical axis direction are connected to form a supporting surface, the supporting surface has a central axis of the supporting surface along the optical axis direction, the central axis of the supporting surface is at an equal vertical distance from the first guide member and the second guide member, and the first driving part and the second driving part are respectively located on both sides of the central axis of the supporting surface along the second direction.

[0010] Preferably, the support assembly further comprises a first magnetic member arranged at the first corner and a second magnetic member arranged at the second corner, the first guide member is arranged opposite to the first magnetic member, and the second guide member is arranged opposite to the second magnetic member.

[0011] Preferably, there are at least two contact positions between the first guide member and the carrier arranged at intervals along the optical axis direction, there is at least one contact position between the second guide member and the carrier, there is a first magnetic attraction force between the first magnetic member and the first guide member, there is a second magnetic attraction force between the second magnetic member and the second guide member, and the size of the first magnetic member is larger than that of the second magnetic member, so that the first magnetic attraction force is greater than the second magnetic attraction force.

[0012] Preferably, on a plane perpendicular to the optical axis, an angle between a line connecting the geometric centers of the second guide member and the second magnetic member and a line connecting the geometric centers of the second guide member and the first guide member is α, and α≤90°.

[0013] As a preference, the first magnetic member is disposed close to the second side surface of the carrier, and the second magnetic member is disposed close to the third side surface of the carrier.

[0014] Preferably, a first avoidance hole is formed at a position where the second side surface of the carrier faces the first magnetic component, and a second avoidance hole is formed at a position where the third side surface of the carrier faces the second magnetic component. The base includes a side wall arranged around the outer side of the carrier, and a first avoidance opening is formed at a position where the side wall of the base is opposite to the first avoidance hole on the second side surface of the carrier, a size of the first avoidance opening is larger than a size of the first avoidance hole, and a portion of the second side surface of the carrier opposite to the first avoidance opening protrudes outward to extend into the first avoidance opening.

[0015] Preferably, the base further comprises a conductive portion, wherein the conductive portion is arranged around a side wall of the base, and a second avoidance opening is formed at a position where the conductive portion is opposite to the first avoidance opening.

[0016] Preferably, the first magnet is arranged on the first side of the carrier, the second magnet is arranged on the third side of the carrier, a position sensing magnet is arranged on the second side of the carrier, a position sensor is arranged on the base opposite to the position sensing magnet, and a vertical distance between the center axis of the light-through hole and the fourth side is smaller than a vertical distance between the center axis of the light-through hole and the second side.

[0017] Preferably, the carrier has a first contact surface and a second contact surface that are not coplanar at the first corner, the first guide member contacts the first contact surface and the second contact surface, the carrier has a third contact surface at the second corner, and the second guide member contacts the third contact surface; The central axis of the first guide member along the optical axis and the central axis of the second guide member along the optical axis are connected to form a supporting surface, the third contact surface is parallel to the supporting surface, the angle between the first contact surface and the supporting surface is θ1, the angle between the second contact surface and the supporting surface is θ2, θ1≠90°, θ2≠90°.

[0018] Preferably, the first guide member contacts the carrier only at the first contact surface and the second contact surface, two contact positions are provided between the first guide member and the first contact surface and are spaced apart along the optical axis direction, two contact positions are provided between the first guide member and the second contact surface and are spaced apart along the optical axis direction, the second guide member contacts the carrier only at the third contact surface, and one contact position is provided between the second guide member and the third contact surface; θ1=θ2.

[0019] Preferably, the surface of the second magnetic member facing the second guide member is parallel to the third contact surface; and the angles between the surface of the first magnetic member facing the first guide member and the first contact surface and the second contact surface are all acute angles.

[0020] As a preference, a surface of the first magnetic member facing the first guiding member and a surface of the second magnetic member facing the second guiding member are respectively parallel to the supporting surface.

[0021] As a preferred embodiment, a camera module includes: an optical lens; A photosensitive component, arranged opposite to the optical lens along the optical axis, for receiving the light emitted by the optical lens for imaging, so as to obtain an image of the object; and As in any of the driving devices described above, the optical lens is held on the photosensitive path of the photosensitive component by the driving device, and the driving device is suitable for driving the optical lens to move along the optical axis direction to achieve optical performance adjustment.

[0022] As a preference, an electronic device comprises the camera module as described above.

[0023] Compared with the prior art, the beneficial effects of this application are: (1) By optimizing the magnetic field distribution and current direction, the component force that is unfavorable to the driving carrier generated during the operation of the driving device can be reduced, thereby reducing the risk of separation of the carrier relative to the base and improving the stability of the camera module during active calibration.

[0024] (2) By optimizing the magnetic field distribution and current direction, a stronger driving force can be generated in a limited space without increasing the size of the magnet or coil, thereby reducing the overall size of the camera module.

[0025] (3) By optimizing the magnetic field distribution and current direction, energy loss can be reduced, energy conversion efficiency can be improved, and energy consumption can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1A It is a stereoscopic schematic diagram of an embodiment of a camera module of the present application.

[0027] Figure 1B This is a schematic diagram of an explosion in one embodiment of the camera module of the present application.

[0028] Figure 1C It is a cross-sectional schematic diagram of an embodiment of the camera module of the present application.

[0029] Figure 2A It is a schematic diagram of the three-dimensional structure of an embodiment of the driving device of the present application.

[0030] Figure 2B Schematic diagram of the contact position between the guide member and the carrier in one embodiment of the driving device of the present application.

[0031] Figure 3 This is a schematic diagram of the structure of the internal support assembly and the drive assembly in one embodiment of the drive device of the present application.

[0032] Figure 4 Schematic diagram of the structure of the internal carrier in one embodiment of the driving device of the present application.

[0033] Figure 5 This is a schematic diagram of the force analysis of the internal carrier in one embodiment of the driving device of the present application.

[0034] Figure 6 Schematic diagram of the current direction of the internal coil in one embodiment of the driving device of the present application.

[0035] Figure 7 This is a schematic diagram of the current direction of the internal coil in another embodiment of the driving device of the present application.

[0036] Figure 8 Schematic diagram of the force components of an internal carrier in one embodiment of the driving device of the present application.

[0037] Fig. 9 Schematic diagram of the force component of the internal carrier in another embodiment of the driving device of the present application.

[0038] Fig.10 This is a schematic diagram of the position of internal driving components in one embodiment of the driving device of the present application.

[0039] Fig.11 Schematic diagram of the position of the guide part in one embodiment of the driving device of the present application.

[0040] Fig.12 Schematic diagram of the magnetic attraction effect between guide members in one embodiment of the driving device of the present application.

[0041] Fig.13 This is a schematic diagram of the magnetic attraction effect between the guide members in another embodiment of the driving device of the present application.

[0042] Fig.14This is a schematic diagram of the position setting of the second magnetic member in one embodiment of the driving device of the present application.

[0043] Fig.15 This is a schematic diagram of the positions of an optical lens in an embodiment of the present application.

[0044] Fig.16 This is a schematic diagram of the structure at the first corner A in an embodiment of the driving device of the present application.

[0045] Fig.17 Schematic diagram of the position of the fixed insert in one embodiment of the driving device of the present application.

[0046] Fig.18 This is a schematic diagram of the positions of the position sensor, the position sensing magnet and the electric lead-out part in one embodiment of the driving device of the present application.

[0047] In the figure: 1, optical lens; 11, lens barrel; 12, optical lens; 2, photosensitive component; 21, photosensitive chip; 22, filter element; 23, bracket; 24, circuit board; 25, electronic component; 3, driving device; 31, upper cover; 32, base; 321, side wall; 3211, first avoidance; 33, carrier; 331, first side surface; 332, second side surface; 333, third side surface; 334, fourth side surface; 335, light hole; 336, first guide portion; 3361, first convex portion; 3362, second convex portion; 337, second guide portion; 3371, third convex portion; 338, first avoidance hole; 339, second avoidance hole; 34 , drive assembly; 341, first drive unit; 3411, first magnet; 3412, first coil; 342, second drive unit; 3421, second magnet; 3422, second coil; 35, support assembly; 351, first magnetic member; 352, second magnetic member; 353, first guide member; 3531, first support position; 3532, second support position; 354, second guide member; 3541, third support position; 36, fixed insert; 37, position sensor; 38, position sensing magnet; 39, conductive part; 391, second avoidance; 392, electrical conduction part; 41, first contact surface; 42, second contact surface; 43, third contact surface. DETAILED DESCRIPTION

[0048] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0049] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present application.

[0050] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0051] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0052] In the drawings of the present application, the X, Y, and Z axes are coordinate axes of a spatial rectangular coordinate system, the first direction mentioned below in the present application is parallel to the X axis, the second direction is parallel to the Y axis, and the third direction and the optical axis are parallel to the Z axis. It should be understood that the optical axis direction of the driving device 3 is the optical axis direction of the optical lens 1.

[0053] like Figures 1A-1C As shown, one embodiment of the present application provides a driving device 3 of a camera module, which includes a base 32, a carrier 33 movably disposed in the base 32, and a driving assembly 34 for driving the carrier 33 to move relative to the base 32, the carrier 33 has a light hole 335, the optical lens 1 is installed in the light hole 335 of the carrier 33, and the driving assembly 34 is used to drive the carrier 33 to move relative to the base 32 along the optical axis direction of the optical lens 1 to achieve an optical focusing function. The photosensitive component 2 of the camera module can be installed on the base 32, and the light is suitable for incident on the photosensitive component 2 for imaging after being converged by the optical lens 1.

[0054] In this embodiment, the driving device 3 further includes an upper cover 31 , and the upper cover 31 is adapted to be mutually buckled with the base 32 to form a receiving cavity with the base 32 to protect other components of the driving device 3 .

[0055] Furthermore, if Figure 2A , Figure 2B and Figure 3As shown, the driving device 3 further includes a supporting assembly 35 , and the carrier 33 has a first corner A and a second corner B at diagonal positions. The carrier 33 is supported on the base 32 by the supporting assembly 35 at the first corner A and the second corner B.

[0056] Further, the support assembly 35 includes a first magnetic member 351 disposed at a first corner A of the carrier 33, and a second magnetic member 352 disposed at a second corner B. The support assembly 35 also includes a first guide member 353 and a second guide member 354 disposed on the base 32 and extending along the optical axis direction. The first guide member 353 is opposite to the first magnetic member 351, and the second guide member 354 is opposite to the second magnetic member 352. The magnetic force between the first magnetic member 351 and the first guide member 353 and the magnetic force between the second guide member 354 and the second magnetic member 352 are used to support the carrier 33 on the first guide member 353 and the second guide member 354. The carrier 33 and the base 32 clamp the first guide member 353 and the second guide member 354. The first guide member 353 and / or the second guide member 354 are used to limit and guide the displacement of the carrier 33, so as to ensure that the carrier 33 moves along the direction defined by the first guide member 353 and / or the second guide member 354. It is worth mentioning that usually only the first guide 353 or the second guide 354 is used to guide and limit the carrier 33. If the first guide 353 and the second guide 354 guide and limit the carrier 33 at the same time, the requirements for component accuracy will increase, and the production cost will increase. When the carrier 33 is acted upon by the driving component 34, the force of the driving component 34 overcomes the friction between the first guide 353, the second guide 354 and the carrier 33, and drives the carrier 33 to move up and down along the first guide 353 and / or the second guide 354.

[0057] Furthermore, there are at least two contact positions spaced apart between the first guide 353 and the carrier 33, and there is at least one contact position between the second guide 354 and the carrier 33, that is, the first guide 353 and the second guide 354 form a stable support for the carrier 33 at at least three non-collinear positions.

[0058] In some embodiments, Figure 2BAs shown, the carrier 33 has a first contact surface 41 and a second contact surface 42 that are not coplanar at the first corner A, the first guide 353 contacts the first contact surface 41 and the second contact surface 42, the carrier 33 has a third contact surface 43 at the second corner B, and the second guide 354 contacts the third contact surface 43. Preferably, the first guide 353 and the carrier 33 only contact the first contact surface 41 and the second contact surface 42, and the second guide 354 and the carrier 33 only contact the third contact surface 43. At this time, the first guide 353 mainly plays a role in limiting and guiding the carrier 33, and the second guide 354 mainly plays a role in supporting.

[0059] The central axis of the first guide member 353 along the optical axis and the central axis of the second guide member 354 along the optical axis are connected to form a support surface, or in other words, the central axis of the first guide member 353 along the optical axis and the central axis of the second guide member 354 along the optical axis are parallel to each other and are located together in the support surface. It can be understood that the support surface mentioned in the present application is a virtual surface and does not specifically refer to a specific plane.

[0060] like Figure 2B As shown, the third contact surface 43 is parallel to the support surface, the angle between the first contact surface 41 and the support surface is θ1, and the angle between the second contact surface 42 and the support surface is θ2, θ1≠90°, θ2≠90°. Preferably, θ1=θ2. It should be understood that at the second corner B, since the third contact surface 43 is parallel to the support surface, the second guide member 354 does not limit and guide the carrier 33. Therefore, the first guide member 353 at the first corner A is mainly used to guide the carrier 33, which is conducive to reducing the requirements for component accuracy.

[0061] In some embodiments, there are two contact positions between the first guide 353 and the first contact surface 41 spaced apart along the optical axis direction, there are two contact positions between the first guide 353 and the second contact surface 42 spaced apart along the optical axis direction, and there is one contact position between the second guide 354 and the third contact surface 43. That is, the support of the carrier 33 by the first guide 353 and the second guide 354 forms a relatively stable triangle, ensuring the support stability.

[0062] In some embodiments, the surface of the first magnetic member 351 facing the first guide member 353 and the surface of the second magnetic member 352 facing the second guide member 354 are parallel to the support surface, so that the first magnetic attraction force and the second magnetic attraction force are perpendicular to the support surface, further reducing the risk of the carrier 33 rotating relative to the base 32. The surface of the second magnetic member 352 facing the second guide member 354 is parallel to the third contact surface 43, and the angles between the surface of the first magnetic member 351 facing the first guide member 353 and the first contact surface 41 and the second contact surface 42 are both acute angles.

[0063] In some embodiments, the first guide 353 and the second guide 354 are respectively implemented as guide rods, and the first guide 353 and the second guide 354 are fixed to the base 32 , so that the carrier 33 moves along the guiding direction of the first guide 353 and / or the second guide 354 .

[0064] In some embodiments, the first magnetic member 351 and the second magnetic member 352 may be implemented as magnets, and the first guide member 353 and the second guide member 354 may be implemented as iron-containing materials suitable for being attracted by magnets. The material of the guide member may be set according to specific circumstances, and this application does not limit this.

[0065] In other embodiments, yoke elements are respectively arranged on the side of the first guide member 353 and the second guide member 354 opposite to the first magnetic member 351 and the second magnetic member 352, and the carrier 33 is supported by the magnetic attraction between the yoke elements on the guide members and the magnetic members.

[0066] like Figure 3 As shown, the driving assembly 34 includes a first driving part 341 and a second driving part 342 disposed on opposite sides of the carrier 33. The first driving part 341 and the second driving part 342 apply forces to the carrier 33 from opposite sides of the carrier 33 to drive the carrier 33 to move.

[0067] like Figure 4 As shown, the carrier 33 includes a first side surface 331 and a second side surface 332 located on both sides of the first corner A, and a third side surface 333 and a fourth side surface 334 located on both sides of the second corner B. The first side surface 331 is adjacent to the fourth side surface 334, and the second side surface 332 is adjacent to the third side surface 333. The first driving part 341 is arranged on the first side surface 331, and the second driving part 342 is arranged on the third side surface 333. The first side surface 331 and the third side surface 333 are parallel to the second direction, the second side surface 332 and the fourth side surface 334 are parallel to the first direction, the first direction and the second direction are perpendicular to each other and are perpendicular to the optical axis. Along the second direction, the first driving part 341 and the second driving part 342 are staggered. Since the support assembly 35 has been arranged at the two corners of the carrier 33, the present application arranges the first driving part 341 and the second driving part 342 close to the other two corners respectively, so that the first driving part 341 and the second driving part 342 are staggered with each other, thereby making full use of the space on the side of the carrier 33, which is conducive to the miniaturization of the driving device 3.

[0068] In the prior art, in order to ensure that the first drive unit 341 and the second drive unit 342 can stably drive the carrier 33 to move, the first drive unit 341 and the second drive unit 342 are usually symmetrically arranged on both sides of the carrier 33, and the center line of the first drive unit 341 and the second drive unit 342 passes through the optical axis. However, in the scheme of the present application, if the first drive unit 341 and the second drive unit 342 are arranged according to the existing scheme, it is necessary to either reduce the size of the first drive unit 341 and the second drive unit 342 along the second direction, or increase the size of the carrier 33 along the second direction to ensure the symmetry of the first drive unit 341 and the second drive unit 342. However, reducing the size of the first drive unit 341 and the second drive unit 342 will affect the size of the driving force, while increasing the size of the carrier 33 is contrary to the pursuit of miniaturization. Based on this, the present application proposes to displace the first drive unit 341 and the second drive unit 342, and make full use of the space of the carrier 33 without reducing the size of the drive unit and increasing the size of the carrier 33, and reasonably arrange the first drive unit 341 and the second drive unit 342.

[0069] In some embodiments, the driving component 34 is a voice coil motor, and the first driving part 341 includes a first magnet 3411 and a first coil 3412 that are arranged opposite to each other, the first magnet 3411 is arranged in one of the carrier 33 or the base 32, and the first coil 3412 is arranged in the other of the carrier 33 or the base 32; the second driving part 342 includes a second magnet 3421 and a second coil 3422 that are arranged opposite to each other, the second magnet 3421 is arranged in one of the carrier 33 or the base 32, and the second coil 3422 is arranged in the other of the carrier 33 or the base 32. The first coil 3412 and the first magnet 3411 are arranged opposite to each other in a direction perpendicular to the optical axis, and the second coil 3422 and the second magnet 3421 are also arranged opposite to each other in a direction perpendicular to the optical axis. The first magnet 3411 and the second magnet 3421 are fixed to two opposite sides of the carrier 33, and the first coil 3412 and the second coil 3422 are fixed to two opposite sides of the base 32, so that after the first coil 3412 and the second coil 3422 are energized, the first magnet 3411, the second magnet 3421 and the carrier 33 are driven to move along the optical axis. Preferably, the first magnet 3411 is arranged on the first side surface 331 and close to the fourth side surface 334, and the second magnet 3421 is arranged on the third side surface 333 and close to the second side surface 332, that is, along the second direction, the first magnet 3411 and the second magnet 3421 are staggered.

[0070] When the first coil 3412 is energized, except for the driving force along the optical axis, there will be a first force F1 between the first magnet 3411 and the first coil 3412 along the relative setting direction of the first magnet 3411 and the first coil 3412. The first force F1 may be a magnetic attraction force or a magnetic repulsion force, which depends on the energizing direction of the first coil 3412. Similarly, when the second coil 3422 is energized, except for the driving force along the optical axis, there will be a second force F2 between the second magnet 3421 and the second coil 3422 along the relative setting direction of the second magnet 3421 and the second coil 3422. The second force F2 may be a magnetic attraction force or a magnetic repulsion force, which depends on the energizing direction of the second coil 3422. It should be understood that the first force F1 and the second force F2 are redundant forces that are not used to drive the carrier 33, which will have an adverse effect on the operation of the driving device 3 and need to be eliminated. When the first force F1 and the second force F2 are in opposite directions, the component force F parallel to the support surface 12 and F 22 Can cancel each other out, and the component force F perpendicular to the support surface 11 and F 21 It cannot be completely offset, such as Figure 5 As shown, the middle diagonal line in the figure represents the support surface formed by connecting the central axis of the first guide member 353 along the optical axis and the central axis of the second guide member 354 along the optical axis. The component force perpendicular to the support surface is conducive to reducing the force required for the separation of the carrier 33 and the base 32, so the existence of this pair of component forces is conducive to reducing the demand for the magnetic attraction of the first magnetic member 351 and the second magnetic member 352, so that the size of the first magnetic member 351 and the second magnetic member 352 can be designed to be smaller, thereby reducing the overall size of the module.

[0071] In one embodiment, along the optical axis, the magnetic pole distribution of the first magnet 3411 facing the first coil 3412 is the same as the magnetic pole distribution of the second magnet 3421 facing the second coil 3422. When the driving component 34 is working, when viewed in a direction perpendicular to the optical axis, the current directions in the first coil 3412 and the second coil 3422 are opposite, so that the directions of the first force F1 and the second force F2 are opposite, and the component force F parallel to the support surface is 12 and F 22 Can offset each other.

[0072] like Figure 6As shown, when viewed along the first direction, the current direction on the upper side of the first coil 3412 is A1, and the current direction on the upper side of the second coil 3422 is A2. The current directions A1 and A2 of the first coil 3412 and the second coil 3422 are opposite. The magnetic pole distribution of the first magnet 3411 facing the first coil 3412 is the same as the magnetic pole distribution of the second magnet 3421 facing the second coil 3422. That is, along the Z-axis direction, the upper magnetic pole of the first magnet 3411 facing the first coil 3412 is N, and the lower magnetic pole is S, and the upper magnetic pole of the second magnet 3421 facing the second coil 3422 is N, and the lower magnetic pole is S; or, the upper magnetic pole of the first magnet 3411 facing the first coil 3412 is S, and the lower magnetic pole is N, and the upper magnetic pole of the second magnet 3421 facing the second coil 3422 is S, and the lower magnetic pole is N. It can be understood that the above-mentioned arrangement can not only enable the first driving part 341 and the second driving part 342 to generate the same driving force along the optical axis direction, but also enable the first force F1 and the second force F2 to have opposite directions, thereby at least partially eliminating the excess force of the first force F1 and the second force F2 that is not used to drive the carrier 33, thereby improving the operating stability of the driving device 3.

[0073] In another embodiment, along the optical axis, the magnetic pole distribution of the first magnet 3411 facing the first coil 3412 is opposite to the magnetic pole distribution of the second magnet 3421 facing the second coil 3422. When the driving component 34 is working, when viewed in a direction perpendicular to the optical axis, the current directions in the first coil 3412 and the second coil 3422 are the same, so that the directions of the first force F1 and the second force F2 are opposite, and the component force F parallel to the support surface 12 and F 22 Can offset each other.

[0074] like Figure 7As shown, when viewed along the first direction, the current directions A1 and A2 of the first coil 3412 and the second coil 3422 are the same; the magnetic pole distribution of the first magnet 3411 facing the first coil 3412 is opposite to the magnetic pole distribution of the second magnet 3421 facing the second coil 3422. Along the Z-axis direction, the upper magnetic pole of the first magnet 3411 facing the first coil 3412 is N, and the lower magnetic pole is S, and the upper magnetic pole of the second magnet 3421 facing the second coil 3422 is S, and the lower magnetic pole is N; or, the upper magnetic pole of the first magnet 3411 facing the first coil 3412 is S, and the lower magnetic pole is N, and the upper magnetic pole of the second magnet 3421 facing the second coil 3422 is N, and the lower magnetic pole is S. The above arrangement can also make the first driving part 341 and the second driving part 342 generate the same driving force along the optical axis direction, and can also make the directions of the first force F1 between the first coil 3412 and the first magnet 3411 and the second force F2 between the second coil 3422 and the second magnet 3421 opposite, thereby eliminating the excess forces of the first force F1 and the second force F2 that are not used to drive the carrier 33, thereby improving the operating stability of the driving device 3.

[0075] It can be understood that since the carrier 33 will be driven upward or downward along the optical axis relative to the base 32 to achieve different focusing requirements, the first coil 3412 and the second coil 3422 will pass positive current or reverse current when the same driving direction is required. After the current direction is reversed, the first force F1 and the second force F2 will also reverse. However, as long as the first force F1 and the second force F2 are kept in opposite directions, part of the force will be offset.

[0076] Furthermore, in order to make the force F 11 and component force F 21 The effect of can be offset as much as possible, and the component force F 11 and component force F 21 To this end, the present application shifts the first driving part 341 (first coil 3412 and first magnet 3411) and the second driving part 342 (second coil 3422 and second magnet 3421) disposed on both sides of the driving device 3 to the sides by substantially the same distance, so that the lengths of the two lever arms can be relatively close.

[0077] In some embodiments, Figure 8As shown, the middle diagonal line in the figure represents the support surface formed by connecting the central axis of the first guide member 353 along the optical axis and the central axis of the second guide member 354 along the optical axis. The support surface has a central axis of the support surface along the optical axis, and the vertical distances of the central axis of the support surface and the central axis of the first guide member 353 and the central axis of the second guide member 354 are equal. When the first driving part 341 and the second driving part 342 are both close to the second side surface 332, that is, the first driving part 341 and the second driving part 342 are respectively located on the same side of the central axis of the support surface along the second direction, there is an obvious difference between the distance D1 from the center of the first magnet 3411 to the support surface and the distance D2 from the center of the second magnet 3421 to the support surface. In this case, it is obvious that the first component force F 11 and the second force F 21 There is a large difference in the lengths of the two force arms, so the first force component F 11 and the second force F 21 There will also be a large difference in the torque, so the part of the impact of the two components that is offset is smaller.

[0078] In some embodiments, Fig. 9 As shown, the middle diagonal line in the figure represents the support surface formed by connecting the central axis of the first guide member 353 along the optical axis and the central axis of the second guide member 354 along the optical axis. The support surface has a central axis of the support surface along the optical axis, and the vertical distances between the central axis of the support surface and the central axis of the first guide member 353 and the central axis of the second guide member 354 are equal. When the first driving part 341 is close to the fourth side surface 334, and the second driving part 342 is close to the second side surface 332, that is, when the first driving part 341 and the second driving part 342 are respectively located on both sides of the central axis of the support surface along the second direction, it is obvious that the first component force F 11 and the second force F 21 The force arms will be closer or even equal, so that the first force F 11 and the second force F 21 The torques will be close to or even equal, and the adverse effects of the two component forces can be better offset. It should be understood that the first driving part 341 and the second driving part 342 are respectively located on both sides of the central axis of the support surface along the second direction, which means that the central part of the first driving part 341 and the central part of the second driving part 342 are respectively located on both sides of the central axis of the support surface along the second direction.

[0079] It is understandable that if Fig.10 As shown, along the Y-axis direction, the present application sets the first driving part 341 at a position away from the first corner A, and sets the second driving part 342 at a position away from the second corner B, which helps to make the first component force F 11 and the second force F 21The effect is further offset, so that the space in the driving device 3 is further optimized, so that the support assembly 35 has more accommodating space in the driving device 3, thereby further compressing the size of the driving device 3 along the Y-axis direction.

[0080] Furthermore, if Fig.11 , Fig.12 and Fig.13 As shown, the carrier 33 has a first guide portion 336 extending along the Z-axis direction corresponding to the first guide member 353, and has a second guide portion 337 extending along the Z-axis direction corresponding to the second guide member 354. The first guide portion 336 has a first convex portion 3361 and a second convex portion 3362, and the first guide member 353 has a first support position 3531 and a second support position 3532 at positions corresponding to the first convex portion 3361 and the second convex portion 3362. The second guide portion 337 has a third convex portion 3371, and the second guide member 354 has a third support position 3541 at a position corresponding to the third convex portion 3371. Thus, along the Z-axis direction, the first guide member 353 and the second guide member 354 form a stable triangular support for the carrier 33, and the first guide member 353 and the second guide member 354 can achieve a stable support effect on the carrier 33.

[0081] In order to further miniaturize the driving device 3, it is necessary to reduce the height of the driving device 3 along the Z-axis direction, so the heights of the first guide member 353 and the second guide member 354 along the Z-axis direction need to be reduced simultaneously. Since the first magnetic member 351 and the first guide member 353 generate a first magnetic attraction, and the second magnetic member 352 and the second guide member 354 generate a second magnetic attraction, when the first magnetic attraction is equal to the second magnetic attraction, Fig.12 As shown, the center of the combined force of the first magnetic attraction and the second magnetic attraction, that is, the position marked by the circle in the figure, is exactly in the middle of the first guide member 353 and the second guide member 354. Fig.13 As shown in FIG. 1 , when the distance between the first protrusion 3361 and the second protrusion 3362 of the first guide portion 336 decreases, the distance between the first support position 3531 and the second support position 3532 on the first guide member 353 is shortened accordingly, which will make Fig.12 The triangle shown by the dashed line becomes Fig.13 The more elongated triangle shown in the figure makes the position where the combined magnetic attraction of the first magnetic attraction and the second magnetic attraction is closer to the upper and lower sides of the triangle, that is, the support of the carrier 33 on the base 32 will be unstable. Therefore, the present application proposes to offset the position where the combined magnetic attraction of the first magnetic attraction and the second magnetic attraction of the driving device 3 acts toward one side of the first guide member 353, so that the center of the combined magnetic attraction of the first magnetic attraction and the second magnetic attraction (i.e. Fig.13 The position marked by the triangle in the middle is biased toward one side of the first guide member 353, thereby improving the stability of the carrier 33.

[0082] Specifically, the size of the first magnetic member 351 is larger than the second magnetic member 352 so that the first magnetic attraction is greater than the second magnetic attraction, so that the combined force of the first and second magnetic attraction is biased toward the first guide member 353 to enhance the support stability of the carrier 33 on the base 32.

[0083] In some embodiments, the magnetic attraction force of the first magnetic member 351 is 20mN-25mN, and the magnetic attraction force of the second magnetic member 352 is 10mN-15mN, so as to ensure that the combined force of the first magnetic attraction force and the second magnetic attraction force is biased toward the first guide member 353 .

[0084] In some embodiments, Fig.14 As shown, on a plane perpendicular to the optical axis, the angle between the line connecting the geometric center of the second guide member 354 and the geometric center of the second magnetic member 352 and the line connecting the geometric center of the second guide member 354 and the geometric center of the first guide member 353 is α, and α≤90°. Preferably, α<90°, that is, the second magnetic member 352 is located on the side of the second guide member 354 close to the first guide member 353, so that the direction of the magnetic attraction force is offset to the side of the first guide member 353, thereby improving the stability of the guide support carrier 33 on the base 32.

[0085] In some embodiments, on a plane perpendicular to the optical axis, the angle between the geometric center of the first guide member 353 and the geometric center of the first magnetic member 351 and the line connecting the geometric center of the second guide member 354 and the geometric center of the first guide member 353 is β, β≥90°, so that the direction of the magnetic attraction force is offset toward the side of the first guide member 353, thereby improving the stability of the guide member supporting carrier 33 on the base 32.

[0086] In some embodiments, Fig.15 As shown, the first magnetic member 351 is located at the first corner A near the second side 332 of the carrier 33. Since the second side 332 of the carrier 33 is not provided with a driving unit, the first magnetic member 351 with a larger volume is arranged near the second side 332, so that more space can be reserved for the first side 331 to arrange the first driving unit 341. The second magnetic member 352 is located at the second corner B near the third side 333 of the carrier 33. Since the volume of the second magnetic member 352 is relatively small, it is arranged near the third side 333, so that the wall thickness required for the fourth side 334 can be effectively reduced, which is conducive to reducing the overall size. At this time, the fourth side 334 of the carrier 33 can reserve more accommodation space, so the carrier 33 can be offset to the position close to the fourth side 334, so that the internal space of the driving device 3 is further optimized, the internal component design is more compact, and the overall size of the driving device 3 is further reduced.

[0087] like Fig.15As shown, the vertical distance H1 between the center axis of the light hole 335 of the carrier 33 and the fourth side 334 of the carrier 33 is smaller than the vertical distance H2 between the center axis and the second side 332. Since the driving device 3 of the present application is not provided with a driving magnet or a driving coil near the fourth side 334 of the carrier 33, the fourth side 334 of the carrier 33 can be designed to be narrower, and thus the center axis of the light hole 335 of the carrier 33 is biased toward the fourth side 334, and the optical lens 1 is also offset toward the fourth side 334 along with the carrier 33, which can further reduce the overall size of the driving device 3 without affecting the function of the driving device 3.

[0088] like Fig.16 As shown, a first avoidance hole 338 is formed at the position where the second side surface 332 of the carrier 33 faces the first magnetic member 351, and a second avoidance hole 339 is formed at the position where the third side surface 333 of the carrier 33 faces the second magnetic member 352, so that the protruding parts of the first magnetic member 351 and the second magnetic member 352 are extended out of the first avoidance hole 338 and the second avoidance hole 339, thereby eliminating the need to increase the size of the carrier 33 along the first direction and the second direction, thereby reducing the size of the overall driving device 3.

[0089] Furthermore, if Fig.16 As shown, since the size of the first magnetic component 351 in the present application is larger than the second magnetic component 352, the base 32 includes a side wall 321 arranged around the outside of the carrier 33, and a first avoidance opening 3211 is formed at a position where the side wall 321 of the base 32 is opposite to the first avoidance hole 338 of the second side surface 332 of the carrier 33. The size of the first avoidance opening 3211 is larger than the size of the first avoidance hole 338, so as to fully accommodate the part of the carrier 33 that protrudes when the size of the first magnetic component 351 becomes larger. The part of the second side surface 332 of the carrier 33 that is opposite to the first avoidance opening 3211 protrudes outward to extend into the first avoidance opening 3211, thereby further obtaining a larger space for accommodating the first magnetic component 351 and reducing the size of the overall driving device 3.

[0090] Furthermore, if Fig.16 As shown, the base 32 also includes a conductive portion 39, which is arranged around the four sides of the base 32. The conductive portion 39 forms a second avoidance opening 391 at a position opposite to the first avoidance opening 3211 of the second side 332 of the carrier 33, so that the first magnetic member 351 has a larger accommodating space, further reducing the size of the overall driving device 3.

[0091] In some embodiments, Fig.17As shown, the driving device 3 further includes a fixing insert 36, which is embedded in the base 32, and the connection portion corresponding to the first guide member 353 and the second guide member 354 is exposed from the base 32. The fixing insert 36 is used to fix the first guide member 353 and the second guide member 354, to ensure that the first guide member 353 and the second guide member 354 remain stable during the optical focusing movement, reduce vibration and jitter, and improve the movement smoothness of the carrier 33.

[0092] In some embodiments, the sides of the first guide member 353 and the second guide member 354 are respectively fixed to the side walls 321 of the base 32 by glue, and the bottom surfaces of the first guide member 353 and the second guide member 354 can be fixed to the fixed insert 36 by glue or welding, thereby effectively improving the connection reliability between the base 32 and the guide members and reducing faults caused by loose connections.

[0093] In some embodiments, the first guide member 353 and the second guide member 354 may not be fixed, but may be directly disposed between the carrier 33 and the base 32 in a clamping manner, so as to facilitate quick installation and removal of the guide members and improve work efficiency.

[0094] Furthermore, if Fig.18 As shown, the driving device 3 also includes a position sensor 37 and a position sensing magnet 38. The position sensing magnet 38 is fixed to the carrier 33, and the position sensor 37 is fixed to the base 32 and is opposite to the position sensing magnet 38. The position sensor 37 is used to obtain the position change information of the position sensing magnet 38 relative to the base 32, thereby obtaining the position change information of the carrier 33 relative to the base 32.

[0095] Further, the position sensing magnet 38 is arranged on the side where the first magnet 3411 or the second magnet 3421 is not arranged. It should be understood that the independent arrangement of the position sensing magnet 38 can reduce the requirements for other magnets and related components that may be reused. Using the first magnet 3411 or the second magnet 3421 as the position sensing magnet 38 will require the first magnet 3411 or the second magnet 3421 to reserve a space relative to the position sensor 37, and will require the first coil 3412 and the second coil 3422 to provide space for the arrangement of the position sensing magnet 38. Therefore, the position sensing magnet 38 is arranged on the side where the first magnet 3411 or the second magnet 3421 is not arranged, which can further reduce the space utilization rate of the driving device 3 along the first direction, and help to reduce the overall size of the driving device 3. Preferably, the position sensing magnet 38 is arranged on the second side 332 of the carrier 33. The second side 332 of the carrier 33 is suitable for forming a groove to accommodate the position sensing magnet 38, thereby avoiding the increase in the size of the driving device 3.

[0096] In some embodiments, the first coil 3412 , the second coil 3422 , and the position sensor 37 are all electrically connected to the conductive portion 39 , and are electrically connected to the photosensitive component 2 through the conductive portion 39 .

[0097] In some embodiments, the conductive part 39 is implemented as a circuit board, fixed to the outer peripheral side of the base 32, and the conductive part 39 is arranged around the four outer peripheral sides of the base 32. Specifically, an opening is provided on the base 32 corresponding to the first coil 3412, the second coil 3422 and the position sensor 37, and the first coil 3412, the second coil 3422 and the position sensor 37 are respectively fixed through the opening and electrically connected to the conductive part 39, so that the first coil 3412, the second coil 3422 and the position sensor 37 are respectively fixed to the base 32 through the conductive part 39.

[0098] In some embodiments, the conductive portion 39 includes an electrical lead-out portion 392, which is used to electrically connect to the photosensitive component 2 of the camera module.

[0099] Furthermore, if Figure 1C As shown, the present application also provides a camera module with the above-mentioned driving device 3, and the camera module includes an optical lens 1, a driving device 3 and a photosensitive component 2. Among them, the optical lens 1 is held on the photosensitive path of the photosensitive component 2 by the driving device 3, and the photosensitive component 2 is used to receive the light emitted by the optical lens 1 for imaging to obtain an image of the subject. The driving device 3 is suitable for driving the optical lens 1 to move to achieve optical performance adjustment.

[0100] Furthermore, the optical lens 1 has an optical axis, the direction of the optical axis is parallel to the Z axis of the camera module along the height direction, and the photosensitive component 2 is arranged opposite to the optical lens 1 along the optical axis direction.

[0101] In some embodiments, the optical lens 1 includes a lens barrel 11 and at least one optical lens 12 installed in the lens barrel 11, and the at least one optical lens 12 is arranged in the lens barrel 11 along the optical axis. The optical lens 1 is installed on the carrier 33 of the driving device 3 through the lens barrel 11.

[0102] In some embodiments, the lens barrel 11 and the carrier 33 of the optical lens 1 are integrally formed, which is equivalent to at least one lens being directly installed in the carrier 33 having the function of the lens barrel 11, which can further reduce the lateral dimensions of the driving device 3 in the width and length directions.

[0103] Furthermore, the photosensitive component 2 includes an imaging circuit board 24, a photosensitive chip 21 electrically connected to the imaging circuit board 24, and at least one electronic component 25. The photosensitive chip 21 is used to receive the light reflected by the object collected by the optical lens 1 for imaging and is electrically connected to other electronic devices through the imaging circuit board 24. The electronic component 25 can be one or more of passive electronic devices such as resistors and capacitors, or one or more of active electronic devices such as drive chips and storage chips.

[0104] In some embodiments, the photosensitive component 2 includes a filter element 22, which is held on the photosensitive path of the photosensitive chip 21, so as to filter the imaging light incident on the photosensitive chip 21, and filter out the light that is not necessary for imaging, such as infrared light, in the incident light. Further, the photosensitive component 2 also includes a bracket 23, and the filter element 22 is mounted on the bracket 23, and the bracket 23 is fixed to the imaging circuit board 24, so that the filter element 22 is fixed to the imaging circuit board 24 through the bracket 23.

[0105] In some embodiments, the driving device 3 can be fixed to the photosensitive component 2 by being fixed to the bracket 23. The stress is transmitted by the bracket 23, so that the photosensitive component 2 can avoid being directly subjected to the impact force of the driving device 3. In other embodiments, the driving device 3 can also be fixed to the photosensitive component 2 by being fixed to the imaging circuit board 24. In this case, the bracket 23 is retracted relative to the edge of the imaging circuit board 24 to provide a fixed position for the driving device 3, reduce the space occupied by the bracket 23, and make the entire device more compact.

[0106] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A driving device, characterized in that: include: Base; Support components; A carrier, wherein the carrier has a light-through hole extending along the optical axis, the carrier has a first corner and a second corner at diagonal positions, and the carrier is supported on the base by the supporting assembly at the first corner and the second corner; as well as A driving component, used for driving the carrier to move along the optical axis relative to the base, the driving component comprising a first driving part and a second driving part arranged on opposite sides of the carrier, the first driving part comprising a first magnet and a first coil arranged oppositely, the first magnet being arranged on one of the carrier or the base, and the first coil being arranged on the other of the carrier or the base; the second driving part comprising a second magnet and a second coil arranged oppositely, the second magnet being arranged on one of the carrier or the base, and the second coil being arranged on the other of the carrier or the base, Along the optical axis, the magnetic pole distribution of the first magnet facing the first coil is the same as the magnetic pole distribution of the second magnet facing the second coil, and when the driving component is working, the current directions in the first coil and the second coil are opposite when viewed along the direction perpendicular to the optical axis; or, Along the optical axis, the magnetic pole distribution of the first magnet facing the first coil is opposite to the magnetic pole distribution of the second magnet facing the second coil. When the driving component is working, when observed in a direction perpendicular to the optical axis, the current directions in the first coil and the second coil are the same.

2. The driving device according to claim 1, characterized in that: The carrier also includes a first side surface and a second side surface located on both sides of the first corner, and a third side surface and a fourth side surface located on both sides of the second corner, the first side surface is adjacent to the fourth side surface, the second side surface is adjacent to the third side surface, the first driving unit is arranged on the first side surface, and the second driving unit is arranged on the third side surface, the first side surface and the third side surface are parallel to the second direction, the second side surface and the fourth side surface are parallel to the first direction, the first direction and the second direction are perpendicular to each other and are both perpendicular to the optical axis, and along the second direction, the first driving unit and the second driving unit are staggered.

3. The driving device according to claim 2, characterized in that: The supporting assembly includes a first guide member and a second guide member which are arranged on the base and extend along the optical axis direction, the first guide member is located at the first corner, the second guide member is located at the second corner, the central axis of the first guide member along the optical axis direction and the central axis of the second guide member along the optical axis direction are connected to form a supporting surface, the supporting surface has a central axis of the supporting surface along the optical axis direction, the central axis of the supporting surface is at an equal vertical distance from the first guide member and the second guide member, and the first driving part and the second driving part are respectively located on both sides of the central axis of the supporting surface along the second direction.

4. The driving device according to claim 3, characterized in that: The supporting assembly further includes a first magnetic member disposed at the first corner and a second magnetic member disposed at the second corner, the first guiding member is disposed opposite to the first magnetic member, and the second guiding member is disposed opposite to the second magnetic member.

5. The driving device according to claim 4, characterized in that: There are at least two contact positions between the first guide member and the carrier arranged at intervals along the optical axis direction, there is at least one contact position between the second guide member and the carrier, there is a first magnetic attraction force between the first magnetic member and the first guide member, there is a second magnetic attraction force between the second magnetic member and the second guide member, and the size of the first magnetic member is larger than that of the second magnetic member, so that the first magnetic attraction force is greater than the second magnetic attraction force.

6. The driving device according to claim 4 or 5, characterized in that: On a plane perpendicular to the optical axis, an angle between a line connecting the geometric centers of the second guide member and the second magnetic member and a line connecting the geometric centers of the second guide member and the first guide member is α, and α≤90°.

7. The driving device according to claim 4, characterized in that: The first magnetic member is disposed close to the second side surface of the carrier, and the second magnetic member is disposed close to the third side surface of the carrier.

8. The driving device according to claim 7, characterized in that: A first avoidance hole is formed at a position where the second side surface of the carrier faces the first magnetic component, and a second avoidance hole is formed at a position where the third side surface of the carrier faces the second magnetic component. The base includes a side wall arranged around the outer side of the carrier, and a first avoidance opening is formed at a position where the side wall of the base is opposite to the first avoidance hole on the second side surface of the carrier, the size of the first avoidance opening is larger than the size of the first avoidance hole, and a portion of the second side surface of the carrier opposite to the first avoidance opening protrudes outward to extend into the first avoidance opening.

9. The driving device according to claim 8, characterized in that: The base further includes a conductive portion, which is disposed around a side wall of the base, and a second avoidance opening is formed at a position where the conductive portion is opposite to the first avoidance opening.

10. The driving device according to claim 7, characterized in that: The first magnet is arranged on the first side surface of the carrier, the second magnet is arranged on the third side surface of the carrier, a position sensing magnet is arranged on the second side surface of the carrier, a position sensor is arranged on the base opposite to the position sensing magnet, and a vertical distance between the central axis of the light-through hole and the fourth side surface is smaller than a vertical distance between the central axis of the light-through hole and the second side surface.

11. The driving device according to claim 4, characterized in that: The carrier has a first contact surface and a second contact surface that are not coplanar at the first corner, the first guide is in contact with the first contact surface and the second contact surface, the carrier has a third contact surface at the second corner, and the second guide is in contact with the third contact surface; The central axis of the first guide member along the optical axis and the central axis of the second guide member along the optical axis are connected to form a supporting surface, the third contact surface is parallel to the supporting surface, the angle between the first contact surface and the supporting surface is θ1, the angle between the second contact surface and the supporting surface is θ2, θ1≠90°, θ2≠90°.

12. The driving device according to claim 11, characterized in that: The first guide member and the carrier are in contact only at the first contact surface and the second contact surface, and there are two contact positions spaced apart along the optical axis direction between the first guide member and the first contact surface, and there are two contact positions spaced apart along the optical axis direction between the first guide member and the second contact surface, and the second guide member and the carrier are in contact only at the third contact surface, and there is one contact position between the second guide member and the third contact surface; θ1=θ2.

13. The driving device according to claim 11, characterized in that: The surface of the second magnetic member facing the second guide member is parallel to the third contact surface; the angles between the surface of the first magnetic member facing the first guide member and the first contact surface and the second contact surface are both acute angles.

14. The driving device according to claim 11, characterized in that: A surface of the first magnetic member facing the first guiding member and a surface of the second magnetic member facing the second guiding member are respectively parallel to the supporting surface.

15. A camera module, characterized in that: include: Optical lens; A photosensitive component, arranged opposite to the optical lens along the optical axis, for receiving the light emitted by the optical lens for imaging, so as to obtain an image of the object; as well as According to the driving device as described in any one of claims 1-14, the optical lens is held on the photosensitive path of the photosensitive component by the driving device, and the driving device is suitable for driving the optical lens to move along the optical axis direction to achieve optical performance adjustment.

16. An electronic device, characterized in that: The electronic device has the camera module as described in claim 15.

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