Drive device, camera module and electronic device

Abstract

The present application discloses a driving device, a camera module, and an electronic device. The driving device includes a base, a support assembly, a carrier, and a driving assembly. The carrier is supported by the support assembly on the base. The driving assembly includes a first driving portion and a second driving portion disposed on opposite sides of the carrier. The first driving portion includes a first magnet and a first coil disposed opposite to each other; the second driving portion includes a second magnet and a second coil disposed opposite to each other. Along the optical axis direction, the pole distribution of the first magnet facing the first coil is the same as the pole distribution of the second magnet facing the second coil. When the driving assembly operates, when observed along a direction perpendicular to the optical axis, the current directions in the first coil and the second coil are opposite; or, along the optical axis direction, the pole distribution of the first magnet facing the first coil is opposite to the pole distribution of the second magnet facing the second coil. When the driving assembly operates, when observed along a direction perpendicular to the optical axis, the current directions in the first coil and the second coil are the same.

Description

Technical Field

[0001] The present application relates to the field of imaging technologies, and particularly to a driving device, an imaging module, and an electronic device. Background Art

[0002] With the popularization of mobile electronic devices, the related technologies of imaging modules used in mobile electronic devices to help users obtain images have developed rapidly. In the market, consumers have increasingly high and diverse requirements for the functions of imaging modules configured in mobile electronic devices (such as smartphones).

[0003] Currently, for the common optical focusing function, it is mainly achieved by setting a driving device in the imaging module that can drive an optical lens to move along the optical axis. When the existing driving device realizes the optical focusing function, it often increases the size of the device, which goes against the development trend of thinner and lighter mobile devices.

[0004] With the increasing demands of consumers, the requirements for the driving device also increase. For example, it is required to reduce the lateral size of the driving device. Therefore, how to further reduce the size of the driving device while meeting high performance has become an important direction of current technological development. Summary of the Invention

[0005] An object of the present application is to implement an optical focusing driving device and an imaging module with a smaller size.

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

[0007] To achieve the above object, the technical solution adopted in the present application is: a driving device, including: a base, a support assembly, and a carrier. The carrier has a light-passing hole penetrating along the optical axis. The carrier has a first corner and a second corner at diagonal positions. The carrier is supported on the base by the support assembly at the first corner and the second corner; and

[0008] a driving assembly for driving the carrier to move along the optical axis relative to the base. The driving assembly includes a first driving part and a second driving part disposed on opposite sides of the carrier. The first driving part includes a first magnet and a first coil disposed opposite to each other. The first magnet is disposed in one of the carrier or the base, and the first coil is disposed in the other of the carrier or the base. The second driving part includes a second magnet and a second coil disposed opposite to each other. The second magnet is disposed in one of the carrier or the base, and the second coil is disposed in the other of the carrier or the base.

[0009] Along the optical axis direction, the magnetic pole distribution of the first magnet facing the first coil is the same as that of the second magnet facing the second coil. When the driving assembly works, when observing along the direction perpendicular to the optical axis, the current directions in the first coil and the second coil are opposite;

[0010] Or,

[0011] Along the optical axis direction, the magnetic pole distribution of the first magnet facing the first coil is opposite to that of the second magnet facing the second coil. When the driving assembly works, when observing along the direction perpendicular to the optical axis, the current directions in the first coil and the second coil are the same.

[0012] As a preference, the carrier further includes a first side face and a second side face located on both sides of the first corner, and a third side face and a fourth side face located on both sides of the second corner. The first side face is adjacent to the fourth side face, the second side face is adjacent to the third side face. The first driving part is arranged on the first side face, the second driving part is arranged on the third side face. The first side face and the third side face are parallel to the second direction, the second side face and the fourth side face are parallel to the first direction. The first direction and the second direction are perpendicular to each other and both are perpendicular to the optical axis. Along the second direction, the first driving part and the second driving part are arranged in a staggered manner.

[0013] As a preference, the support assembly includes a first guide member and a second guide member arranged on the base and extending 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 and the central axis of the second guide member along the optical axis are connected to form a support surface. The support surface has a central axis of the support surface along the optical axis. The perpendicular distance from the central axis of the support surface to the first guide member and the second guide member is equal. The first driving part and the second driving part are respectively located on both sides of the central axis of the support surface along the second direction.

[0014] As a preference, the support assembly further includes 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.

[0015] As a preference, there are at least two contact positions spaced along the optical axis direction between the first guiding member and the carrier, there is at least one contact position between the second guiding member and the carrier, there is a first magnetic attraction force between the first magnetic member and the first guiding member, there is a second magnetic attraction force between the second magnetic member and the second guiding 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.

[0016] As a preference, in a plane perpendicular to the optical axis, the included angle between the line connecting the geometric centers of the second guiding member and the second magnetic member and the line connecting the geometric centers of the second guiding member and the first guiding member is α, and α ≤ 90°.

[0017] As a preference, the first magnetic member is arranged close to the second side surface of the carrier, and the second magnetic member is arranged close to the third side surface of the carrier.

[0018] As a preference, a first avoidance hole is formed at the position of the second side surface of the carrier facing the first magnetic member, a second avoidance hole is formed at the position of the third side surface of the carrier facing the second magnetic member, the base includes a side wall arranged around the outside of the carrier, and a first avoidance opening is formed at the position of the side wall of the base opposite to the first avoidance hole on the second side surface of the carrier. The size of the first avoidance opening is larger than that of the first avoidance hole, and the part of the second side surface of the carrier opposite to the first avoidance opening bulges outwards to extend into the first avoidance opening.

[0019] As a preference, the base further includes a conductive part arranged around the side wall of the base, and a second avoidance opening is formed at the position of the conductive part opposite to the first avoidance opening.

[0020] As a preference, 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 the perpendicular distance from the central axis of the light passing hole to the fourth side surface is less than its perpendicular distance to the second side surface.

[0021] As a preference, the carrier has a non-coplanar first contact surface and second contact surface at the first corner, the first guiding 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 guiding member contacts the third contact surface;

[0022] The central axis of the first guiding member along the optical axis and the central axis of the second guiding member along the optical axis are connected to form a supporting surface. The third contact surface is parallel to the supporting surface. The included angle between the first contact surface and the supporting surface is θ1, and the included angle between the second contact surface and the supporting surface is θ2, where θ1≠90° and θ2≠90°.

[0023] As a preference, the first guiding member contacts the carrier only at the first contact surface and the second contact surface. There are two contact positions spaced along the optical axis between the first guiding member and the first contact surface, and there are two contact positions spaced along the optical axis between the first guiding member and the second contact surface. The second guiding member contacts the carrier only at the third contact surface, and there is one contact position between the second guiding member and the third contact surface; θ1 = θ2.

[0024] As a preference, the surface of the second magnetic member facing the second guiding member is parallel to the third contact surface; the surfaces of the first magnetic member facing the first guiding member are both acute angles with the included angles between the first contact surface and the second contact surface.

[0025] As a preference, the surface of the first magnetic member facing the first guiding member and the surface of the second magnetic member facing the second guiding member are respectively parallel to the supporting surface.

[0026] As a preference, an imaging module includes: an optical lens;

[0027] A photosensitive component, disposed opposite to the optical lens along the optical axis, for receiving the light emitted by the optical lens to perform imaging so as to obtain an image of an object to be photographed; and

[0028] The driving device as described in any one of the above, the optical lens is held on the photosensitive path of the photosensitive component through the driving device, and the driving device is adapted to drive the optical lens to move along the optical axis to achieve optical performance adjustment.

[0029] As a preference, an electronic device has the imaging module as described above.

[0030] Compared with the prior art, the beneficial effects of the present application are as follows:

[0031] (1) By optimizing the magnetic field distribution and the current direction, it is possible to reduce the component force that is not conducive to driving the carrier generated during the operation of the driving device, thereby reducing the risk of the carrier separating from the base and improving the stability during the active calibration of the imaging module.

[0032] (2) By optimizing the magnetic field distribution and current direction, a stronger driving force can be generated within a limited space without increasing the size of the magnet or coil, thereby reducing the overall size of the camera module.

[0033] (3) By optimizing the magnetic field distribution and current direction, energy loss can be reduced and energy conversion efficiency can be improved, thereby reducing energy consumption. Brief Description of the Drawings

[0034] Figure 1A Schematic perspective view of an embodiment of the camera module of the present application.

[0035] Figure 1B Schematic exploded view of an embodiment of the camera module of the present application.

[0036] Figure 1C Schematic cross-sectional view of an embodiment of the camera module of the present application.

[0037] Figure 2A Schematic perspective view of the three-dimensional structure of an embodiment of the driving device of the present application.

[0038] Figure 2B Schematic diagram of the contact position between the guide member and the carrier in an embodiment of the driving device of the present application.

[0039] Figure 3 Schematic diagram of the structure of the internal support assembly and the driving assembly in an embodiment of the driving device of the present application.

[0040] Figure 4 Schematic diagram of the structure of the internal carrier in an embodiment of the driving device of the present application.

[0041] Figure 5 Schematic diagram of the force analysis of the internal carrier in an embodiment of the driving device of the present application.

[0042] Figure 6 Schematic diagram of the current direction of the internal coil in an embodiment of the driving device of the present application.

[0043] Figure 7 Schematic diagram of the current direction of the internal coil in another embodiment of the driving device of the present application.

[0044] Figure 8 Schematic diagram of the acting force of the internal carrier in an embodiment of the driving device of the present application.

[0045] Figure 9 Schematic diagram of the acting force of the internal carrier in another embodiment of the driving device of the present application.

[0046] Figure 10 Schematic diagram of the position of the internal driving assembly in an embodiment of the driving device of the present application.

[0047] Figure 11 Schematic diagram of the position of the guiding part in an embodiment of the driving device of the present application.

[0048] Figure 12 Schematic diagram of the magnetic suction effect between the guiding members in an embodiment of the driving device of the present application.

[0049] Figure 13 Schematic diagram of the magnetic suction effect between the guiding members in another embodiment of the driving device of the present application.

[0050] Figure 14 Schematic diagram of the position setting of the second magnetic member in an embodiment of the driving device of the present application.

[0051] Figure 15 Schematic diagram of the position in an embodiment of the optical lens of the present application.

[0052] Figure 16 Schematic diagram of the structure at the first corner A in an embodiment of the driving device of the present application.

[0053] Figure 17 Schematic diagram of the position of the fixed insert in an embodiment of the driving device of the present application.

[0054] Figure 18 Schematic diagram of the positions of the position sensor, the position sensing magnet and the electrical lead-out part in an embodiment of the driving device of the present application.

[0055] 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 opening; 33. Carrier; 331. First side; 332. Second side; 333. Third side; 334. Fourth side; 335. Light passing hole; 336. First guiding part; 3361. First convex part; 3362. Second convex part; 337. Second guiding part; 3371. Third convex part; 338. First avoidance hole; 339. Second avoidance hole; 34. Driving component; 341. First driving part; 3411. First magnet; 3412. First coil; 342. Second driving part; 3421. Second magnet; 3422. Second coil; 35. Support component; 351. First magnetic member; 352. Second magnetic member; 353. First guiding member; 3531. First support position; 3532. Second support position; 354. Second guiding member; 3541. Third support position; 36. Fixed insert; 37. Position sensor; 38. Position sensing magnet; 39. Conductive part; 391. Second avoidance opening; 392. Electrical lead-out part; 41. First contact surface; 42. Second contact surface; 43. Third contact surface. Detailed implementation manners

[0056] Next, in combination with the specific implementation manners, the present application will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined with each other to form new embodiments.

[0057] In the description of the present application, it should be noted that for the orientation terms, such as the terms "center", "horizontal", "vertical", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the indicated orientation and positional relationship are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present application.

[0058] 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 do not necessarily have to be used to describe a specific order or sequence.

[0059] The terms "comprising" and "having" in the description and claims of the present application and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0060] In the drawings of the present application, the X, Y, and Z axes are the coordinate axes of a three-dimensional 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.

[0061] As Figures 1A - 1C shown, an embodiment of the present application provides a driving device 3 for a camera module, which includes a base 32, a carrier 33 movably disposed in the base 32, and a driving component 34 for driving the carrier 33 to move relative to the base 32. The carrier 33 has a light passing hole 335, and the optical lens 1 is installed in the light passing hole 335 of the carrier 33. The driving component 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 the optical focusing function. The photosensitive component 2 of the camera module can be installed on the base 32, and the light converges through the optical lens 1 and is suitable for being incident on the photosensitive component 2 for imaging.

[0062] In this embodiment, the driving device 3 further includes an upper cover 31 which is adapted to be buckled with the base 32 to form a receiving cavity with the base 32 for protecting other components of the driving device 3.

[0063] Further, as Figure 2A , Figure 2B and Figure 3 shown, the driving device 3 further includes a support assembly 35. 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 support assembly 35 at the first corner A and the second corner B.

[0064] Further, the support assembly 35 includes a first magnetic member 351 disposed at the first corner A of the carrier 33, and a second magnetic member 352 disposed at the second corner B. The support assembly 35 further 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 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 relying on the first guide member 353 or the second guide member 354 to achieve the guiding and limiting of the carrier 33 is sufficient. If the first guide member 353 and the second guide member 354 simultaneously guide and limit the carrier 33, it will increase the requirement for the accuracy of the components and increase the production cost. When the carrier 33 is subjected to the acting force of the driving assembly 34, the acting force of the driving assembly 34 overcomes the friction force between the first guide member 353, the second guide member 354 and the carrier 33, and drives the carrier 33 to move up and down along the first guide member 353 and / or the second guide member 354.

[0065] Further, there are at least two contact positions with spaced arrangements between the first guide member 353 and the carrier 33, and there is at least one contact position between the second guide member 354 and the carrier 33. That is, the first guide member 353 and the second guide member 354 form a stable support for the carrier 33 at at least three non - collinear positions.

[0066] In some embodiments, as Figure 2BAs shown, the carrier 33 has a non-coplanar first contact surface 41 and a second contact surface 42 at the first corner A. The first guide member 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 member 354 contacts the third contact surface 43. Preferably, the first guide member 353 contacts the carrier 33 only at the first contact surface 41 and the second contact surface 42, and the second guide member 354 contacts the carrier 33 only at the third contact surface 43. At this time, the first guide member 353 mainly functions to limit and guide the carrier 33, and the second guide member 354 mainly functions to support.

[0067] The central axis of the first guide member 353 along the optical axis direction and the central axis of the second guide member 354 along the optical axis direction are connected to form a support surface. Or rather, the central axis of the first guide member 353 along the optical axis direction is parallel to the central axis of the second guide member 354 along the optical axis direction, and they are both located within the support surface. It can be understood that the support surface mentioned in this application is a virtual surface and does not specifically refer to a certain specific plane.

[0068] As Figure 2B shown, the third contact surface 43 is parallel to the support surface. The included angle between the first contact surface 41 and the support surface is θ1, and the included angle between the second contact surface 42 and the support surface is θ2, where θ1≠90° and 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 guidance of the carrier 33 is mainly achieved by the first guide member 353 at the first corner A, which is beneficial to reducing the requirements for the accuracy of components.

[0069] In some embodiments, there are two contact positions spaced along the optical axis direction between the first guide member 353 and the first contact surface 41, two contact positions spaced along the optical axis direction between the first guide member 353 and the second contact surface 42, and one contact position between the second guide member 354 and the third contact surface 43. That is, the support of the carrier 33 by the first guide member 353 and the second guide member 354 forms a relatively stable triangle, ensuring the support stability.

[0070] 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 respectively 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 surface of the first magnetic member 351 facing the first guide member 353 forms an acute angle with both the first contact surface 41 and the second contact surface 42.

[0071] In some embodiments, the first guide member 353 and the second guide member 354 are respectively implemented as guide rods, and the first guide member 353 and the second guide member 354 are fixed to the base 32, so that the carrier 33 moves along the guiding directions of the first guide member 353 and / or the second guide member 354.

[0072] In some embodiments, the first magnetic member 351 and the second magnetic member 352 can be implemented as magnets, while the first guide member 353 and the second guide member 354 can be implemented as iron-containing materials suitable for being attracted by magnets. The material of the guide member can be set according to specific circumstances, and the present application does not limit this.

[0073] In some other embodiments, yoke elements are respectively provided on the sides 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 forces between the yoke elements on the guide members and the respective magnetic members.

[0074] As Figure 3 shown, the driving assembly 34 includes a first driving portion 341 and a second driving portion 342 provided on opposite sides of the carrier 33. The first driving portion 341 and the second driving portion 342 respectively apply acting forces to the carrier 33 from opposite sides of the carrier 33 to drive the carrier 33 to move.

[0075] As Figure 4 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 portion 341 is provided on the first side surface 331, and the second driving portion 342 is provided 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 both are perpendicular to the optical axis. Along the second direction, the first driving portion 341 and the second driving portion 342 are staggeredly arranged. Since the support assembly 35 has been provided at two corners of the carrier 33, in the present application, the first driving portion 341 and the second driving portion 342 are respectively arranged close to the other two corners, so that the first driving portion 341 and the second driving portion 342 are staggered from each other, thereby making full use of the space on the side surface of the carrier 33 and being beneficial to realizing the miniaturization of the driving device 3.

[0076] In the prior art, in order to ensure that the first driving part 341 and the second driving part 342 can stably drive the carrier 33 to move, the first driving part 341 and the second driving part 342 are usually symmetrically arranged on both sides of the carrier 33, and the central connection line of the first driving part 341 and the second driving part 342 passes through the optical axis. However, in the solution of the present application, if the first driving part 341 and the second driving part 342 are arranged according to the existing solution, either the sizes of the first driving part 341 and the second driving part 342 in the second direction need to be reduced, or the size of the carrier 33 in the second direction needs to be increased to ensure the symmetry of the first driving part 341 and the second driving part 342. However, reducing the sizes of the first driving part 341 and the second driving part 342 will affect the magnitude of the driving force, and increasing the size of the carrier 33 runs counter to the pursuit of miniaturization. Based on this, the present application proposes to arrange the first driving part 341 and the second driving part 342 in a staggered manner, making full use of the space of the carrier 33 and reasonably arranging the first driving part 341 and the second driving part 342 without reducing the size of the driving part and without increasing the size of the carrier 33.

[0077] In some embodiments, the driving assembly 34 is a voice coil motor. The first driving part 341 includes a first magnet 3411 and a first coil 3412 which are oppositely arranged. The first magnet 3411 is arranged on one of the carrier 33 or the base 32, and the first coil 3412 is arranged on 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 which are oppositely arranged. The second magnet 3421 is arranged on one of the carrier 33 or the base 32, and the second coil 3422 is arranged on the other of the carrier 33 or the base 32. The first coil 3412 and the first magnet 3411 are oppositely arranged in a direction perpendicular to the optical axis, and the second coil 3422 and the second magnet 3421 are also oppositely arranged in a direction perpendicular to the optical axis. The first magnet 3411 and the second magnet 3421 are fixed on two opposite sides of the carrier 33, and the first coil 3412 and the second coil 3422 are fixed on two opposite sides of the base 32. Then, 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, in the second direction, the first magnet 3411 and the second magnet 3421 are arranged in a staggered manner.

[0078] When the first coil 3412 is energized, in addition to the driving force along the optical axis direction, there will be a first acting force F1 between the first magnet 3411 and the first coil 3412 along the direction in which the first magnet 3411 and the first coil 3412 are oppositely arranged. The first acting 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, in addition to the driving force along the optical axis direction, there will be a second acting force F2 between the second magnet 3421 and the second coil 3422 along the direction in which the second magnet 3421 and the second coil 3422 are oppositely arranged. The second acting 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 acting force F1 and the second acting force F2 are redundant forces that are not used to drive the carrier 33 and will have an adverse impact on the operation of the driving device 3 and need to be eliminated. When the first acting force F1 and the second acting force F2 are in opposite directions, the component forces F 12 and F 22 parallel to the support surface can cancel each other out, while the component forces F 11 and F 21 perpendicular to the support surface cannot be completely cancelled out. As shown in Figure 5 , the middle diagonal line in the figure represents the support surface formed by connecting the central axes of the first guide member 353 and the second guide member 354 along the optical axis direction. The component forces perpendicular to the support surface are beneficial to reducing the force required to separate the carrier 33 from the base 32. Therefore, the existence of this pair of component forces is beneficial to reducing the requirement for the magnetic attraction force of the first magnetic member 351 and the second magnetic member 352, so that the sizes 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.

[0079] In one embodiment, along the optical axis direction, the pole distribution of the first magnet 3411 facing the first coil 3412 is the same as the pole distribution of the second magnet 3421 facing the second coil 3422. When the driving assembly 34 operates, when observed along the 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 acting force F1 and the second acting force F2 are opposite, and the component forces F 12 and F 22 parallel to the support surface can cancel each other out.

[0080] As shown in Figure 6As shown, when observed 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 to say, along the Z-axis direction, the magnetic pole above the side of the first magnet 3411 facing the first coil 3412 is N, and the magnetic pole below is S. The magnetic pole above the side of the second magnet 3421 facing the second coil 3422 is N, and the magnetic pole below is S; alternatively, the magnetic pole above the side of the first magnet 3411 facing the first coil 3412 is S, and the magnetic pole below is N. The magnetic pole above the side of the second magnet 3421 facing the second coil 3422 is S, and the magnetic pole below is N. It can be understood that the above settings can not only make the first driving part 341 and the second driving part 342 generate the same driving force along the optical axis direction, but also make the directions of the first acting force F1 and the second acting force F2 opposite, so as to be able to at least partially eliminate the redundant forces of the first acting force F1 and the second acting force F2 that are not used to drive the carrier 33, and improve the operation stability of the driving device 3.

[0081] In another embodiment, along the optical axis direction, 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 assembly 34 works, when observed along the 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 acting force F1 and the second acting force F2 are opposite, and the component forces F 12 and F 22 can cancel each other out.

[0082] As Figure 7As shown, when observed 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 magnetic pole above the side of the first magnet 3411 facing the first coil 3412 is N, and the magnetic pole below is S; the magnetic pole above the side of the second magnet 3421 facing the second coil 3422 is S, and the magnetic pole below is N; or, the magnetic pole above the side of the first magnet 3411 facing the first coil 3412 is S, and the magnetic pole below is N, and the magnetic pole above the side of the second magnet 3421 facing the second coil 3422 is N, and the magnetic pole below is S. With the above settings, it is possible to make the first driving part 341 and the second driving part 342 generate the same driving force along the optical axis direction, and also make the directions of the first acting force F1 between the first coil 3412 and the first magnet 3411 and the second acting force F2 between the second coil 3422 and the second magnet 3421 opposite, so as to be able to eliminate the redundant forces of the first acting force F1 and the second acting force F2 that are not used to drive the carrier 33, and improve the operation stability of the driving device 3.

[0083] 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 meet different focusing requirements, the first coil 3412 and the second coil 3422 will conduct forward current or reverse current when there is a demand in the same driving direction. After the current direction is reversed, the first acting force F1 and the second acting force F2 will also be reversed, but as long as the first acting force F1 and the second acting force F2 are kept opposite, some of the forces will be cancelled out.

[0084] Furthermore, to make the component forces F 11 and the component forces F 21 act as much as possible to cancel each other out, it is necessary to make the lever arm lengths of the component forces F 11 and the component forces F 21 close. For this reason, in this application, the first driving part 341 (the first coil 3412 and the first magnet 3411) and the second driving part 342 (the second coil 3422 and the second magnet 3421) provided on both sides of the driving device 3 are respectively offset by basically the same distance to both sides, so that the lengths of the two lever arms can be relatively close.

[0085] In some embodiments, such as Figure 8As shown in the figure, the middle diagonal line in the figure represents the support surface formed by connecting the central axes of the first guide member 353 and the second guide member 354 along the optical axis direction. The support surface has a support surface central axis along the optical axis direction, and the perpendicular distance from the support surface central axis to the central axes of the first guide member 353 and the second guide member 354 is equal. When both the first driving portion 341 and the second driving portion 342 are close to the second side surface 332, that is, when the first driving portion 341 and the second driving portion 342 are respectively located on the same side of the support surface central axis along the second direction, 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 have an obvious gap. In this case, obviously, the 11 and the second component force F 21 have a large difference in the lengths of the two force arms. Furthermore, the 11 and the second component force F 21 will also have a large difference in torque, so that the part where the influences brought by the two component forces are offset is small.

[0086] In some embodiments, as Figure 9 shown in the figure, the middle diagonal line in the figure represents the support surface formed by connecting the central axes of the first guide member 353 and the second guide member 354 along the optical axis direction. The support surface has a support surface central axis along the optical axis direction, and the perpendicular distance from the support surface central axis to the central axes of the first guide member 353 and the second guide member 354 is equal. When the first driving portion 341 is close to the fourth side surface 334 and the second driving portion 342 is close to the second side surface 332, that is, when the first driving portion 341 and the second driving portion 342 are respectively located on both sides of the support surface central axis along the second direction, obviously, the 11 and the second component force F 21 will have force arms that are closer or even equal, so that the 11 and the second component force F 21 will have torques that are close or even equal. Furthermore, the adverse effects of the two component forces can be better offset. It should be understood that the first driving portion 341 and the second driving portion 342 being respectively located on both sides of the support surface central axis along the second direction means that the central parts of the first driving portion 341 and the second driving portion 342 are respectively located on both sides of the support surface central axis along the second direction.

[0087] It can be understood that, as Figure 10 shown in the figure, along the Y-axis direction, the present application arranges the first driving portion 341 at a position away from the first corner A and arranges the second driving portion 342 at a position away from the second corner B, which helps to make the 11 and the second component force F 21The function is further offset, further optimizing the space in the driving device 3, enabling the support assembly 35 to have more accommodation space in the driving device 3, and thus being able to further compress the size of the driving device 3 in the Y-axis direction.

[0088] Furthermore, as Figure 11 , Figure 12 and Figure 13 shown, the carrier 33 has a first guiding portion 336 extending in the Z-axis direction corresponding to the first guiding member 353, and a second guiding portion 337 extending in the Z-axis direction corresponding to the second guiding member 354. Among them, the first guiding portion 336 has a first convex portion 3361 and a second convex portion 3362, and the first guiding member 353 has a first support position 3531 and a second support position 3532 corresponding to the positions of the first convex portion 3361 and the second convex portion 3362. The second guiding portion 337 has a third convex portion 3371, and the second guiding member 354 has a third support position 3541 corresponding to the position of the third convex portion 3371. Thus, along the Z-axis direction, the first guiding member 353 and the second guiding member 354 form a stable triangular support for the carrier 33, and the stable supporting effect of the first guiding member 353 and the second guiding member 354 on the carrier 33 can be realized.

[0089] To further achieve the miniaturization of the driving device 3, it is necessary to reduce the height of the driving device 3 along the Z-axis direction. Therefore, the heights of the first guiding member 353 and the second guiding member 354 along the Z-axis direction need to be reduced synchronously. Since the first magnetic member 351 generates a first magnetic attraction force with the first guiding member 353, and the second magnetic member 352 and the second guiding member 354 generate a second magnetic attraction force, when the first magnetic attraction force is equal to the second magnetic attraction force, as Figure 12 shown, the center of the resultant force of the first magnetic attraction force and the second magnetic attraction force, that is, the position marked by the circle in the figure, is just in the middle position between the first guiding member 353 and the second guiding member 354. As Figure 13 shown, when the distance between the first convex portion 3361 and the second convex portion 3362 of the first guiding portion 336 decreases, the distance between the first support position 3531 and the second support position 3532 on the first guiding member 353 shortens accordingly, which will make the Figure 12 triangle shown by the dashed line in Figure 13 become the Figure 13 more slender triangle shown in

[0090] shown, and then the acting position of the resultant magnetic attraction force of the first magnetic attraction force and the second magnetic attraction force 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 acting position of the resultant force of the first magnetic attraction force and the second magnetic attraction force of the driving device 3 to the side of the first guiding member 353, so that the center of the resultant force of the first magnetic attraction force and the second magnetic attraction force (that is, the Figure 13 position marked by the triangle in

[0090] ) biases towards the side of the first guiding member 353, thereby improving the stability of the carrier 33.Specifically, the size of the first magnetic member 351 is larger than that of the second magnetic member 352, so that the first magnetic attraction force is greater than the second magnetic attraction force. As a result, the resultant force of the first magnetic attraction force and the second magnetic attraction force biases towards the first guiding member 353, thereby enhancing the support stability of the carrier 33 on the base 32.

[0091] In some embodiments, the magnetic attraction force of the first magnetic member 351 is 20 mN to 25 mN, and the magnetic attraction force of the second magnetic member 352 is 10 mN to 15 mN, to ensure that the resultant force of the first magnetic attraction force and the second magnetic attraction force biases towards the first guiding member 353.

[0092] In some embodiments, as Figure 14 shown, in a plane perpendicular to the optical axis, the included angle between the line connecting the geometric centers of the second guiding member 354 and the second magnetic member 352 and the line connecting the geometric centers of the second guiding member 354 and the first guiding 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 guiding member 354 close to the first guiding member 353, so that the direction of the magnetic attraction resultant force shifts towards the first guiding member 353, enhancing the stability of the guiding member to support the carrier 33 on the base 32.

[0093] In some embodiments, in a plane perpendicular to the optical axis, the included angle between the line connecting the geometric centers of the first guiding member 353 and the first magnetic member 351 and the line connecting the geometric centers of the second guiding member 354 and the first guiding member 353 is β, and β ≥ 90°, so that the direction of the magnetic attraction resultant force shifts towards the first guiding member 353, enhancing the stability of the guiding member to support the carrier 33 on the base 32.

[0094] In some embodiments, as Figure 15 shown, the first magnetic member 351 is located at a position in the first corner A close to the second side surface 332 of the carrier 33. Since no driving part is provided on the second side surface 332 of the carrier 33, setting the relatively large - sized first magnetic member 351 close to the second side surface 332 can leave more space on the first side surface 331 for setting the first driving part 341. The second magnetic member 352 is located at a position in the second corner B close to the third side surface 333 of the carrier 33. Since the volume of the second magnetic member 352 is relatively small, setting it at a position close to the third side surface 333 can effectively reduce the wall thickness required for the fourth side surface 334, thereby facilitating the reduction of the overall size. At this time, more accommodation space can be reserved on the fourth side surface 334 of the carrier 33. Therefore, the carrier 33 can be offset towards the position close to the fourth side surface 334, further optimizing the internal space of the driving device 3, making the internal component design more compact, and further reducing the overall size of the driving device 3.

[0095] As Figure 15As shown, the vertical distance H1 between the central axis of the light-passing hole 335 of the carrier 33 and the fourth side surface 334 of the carrier 33 is less than the vertical distance H2 between the central axis of the light-passing hole 335 of the carrier 33 and the second side surface 332 of the carrier 33. Since no drive magnet or drive coil is provided on the drive device 3 of the present application near the fourth side surface 334 of the carrier 33, the fourth side surface 334 of the carrier 33 can be designed to be narrower. Furthermore, the central axis of the light-passing hole 335 of the carrier 33 is biased towards the fourth side surface 334, and the optical lens 1 also shifts towards the fourth side surface 334 along with the carrier 33. Without affecting the function of the drive device 3, the overall size of the drive device 3 can be further reduced.

[0096] As Figure 16 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 can extend 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 in the first direction and the second direction and reducing the overall size of the drive device 3.

[0097] Furthermore, as Figure 16 shown, since the size of the first magnetic member 351 in the present application is larger than that of the second magnetic member 352, the base 32 includes a side wall 321 disposed around the outside of the carrier 33. A first avoidance opening 3211 is formed at the position of the side wall 321 of the base 32 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 that of the first avoidance hole 338 to fully accommodate the part that the carrier 33 protrudes when the size of the first magnetic member 351 becomes larger. The part of the second side surface 332 of the carrier 33 opposite to the first avoidance opening 3211 bulges outwards to extend into the first avoidance opening 3211, thereby further obtaining a larger space for accommodating the first magnetic member 351 and reducing the overall size of the drive device 3.

[0098] Furthermore, as Figure 16 shown, the base 32 further includes a conductive part 39, and the conductive part 39 is disposed around the four side surfaces of the base 32. A second avoidance opening 391 is formed at the position of the conductive part 39 opposite to the first avoidance opening 3211 of the second side surface 332 of the carrier 33, so that the first magnetic member 351 has a larger accommodation space and further reduces the overall size of the drive device 3.

[0099] In some embodiments, as Figure 17As shown, the driving device 3 further includes a fixed insert 36, which is embedded in the base 32, and the connection part corresponding to the first guiding member 353 and the second guiding member 354 exposes from the base 32. The fixed insert 36 is used to fix the first guiding member 353 and the second guiding member 354, ensuring that the first guiding member 353 and the second guiding member 354 remain stable during the optical focusing movement, reducing vibration and jitter, and improving the movement smoothness of the carrier 33.

[0100] In some embodiments, the sides of the first guiding member 353 and the second guiding member 354 are respectively fixed to the side wall 321 of the base 32 by glue, and the bottom surfaces of the first guiding member 353 and the second guiding member 354 can be fixed to the fixed insert 36 by glue or welding, effectively improving the connection reliability between the base 32 and the guiding members and reducing the failures caused by loose connections.

[0101] In some embodiments, the first guiding member 353 and the second guiding member 354 may not be fixed, but directly arranged between the carrier 33 and the base 32 in a clamping manner, which is convenient for quickly installing and disassembling the guiding members and improving work efficiency.

[0102] Furthermore, as Figure 18 shown, the driving device 3 further 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, so as to obtain the position change information of the carrier 33 relative to the base 32.

[0103] Furthermore, the position sensing magnet 38 is arranged on the side where the first magnet 3411 or the second magnet 3421 is not provided. It should be understood that independently arranging the position sensing magnet 38 can reduce the requirements for other magnets and associated 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 space opposite to the position sensor 37, and will require the first coil 3412 and the second coil 3422 to provide space for the setting of the position sensing magnet 38. Therefore, arranging the position sensing magnet 38 on the side where the first magnet 3411 or the second magnet 3421 is not provided can further reduce the space utilization rate of the driving device 3 in the first direction, contributing to reducing the overall size of the driving device 3. Preferably, the position sensing magnet 38 is arranged on the second side surface 332 of the carrier 33. The second side surface 332 of the carrier 33 is adapted to be recessed to form a groove to accommodate the position sensing magnet 38, thus avoiding an increase in the size of the driving device 3.

[0104] In some embodiments, the first coil 3412, the second coil 3422, and the position sensor 37 are all electrically connected to the conductive part 39 and are electrically connected to the photosensitive component 2 through the conductive part 39.

[0105] 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 disposed around the four outer peripheral sides of the base 32. Specifically, openings are provided on the base 32 corresponding to the first coil 3412, the second coil 3422, and the position sensor 37. The first coil 3412, the second coil 3422, and the position sensor 37 respectively pass through the openings and are fixed 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.

[0106] In some embodiments, the conductive part 39 includes an electrical lead-out part 392, and the electrical lead-out part 392 is used for electrically connecting to the photosensitive component 2 of the camera module.

[0107] Further, as Figure 1C shown, the present application also provides a camera module having the above-mentioned driving device 3. 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 through the driving device 3. The photosensitive component 2 is used to receive the light emitted by the optical lens 1 for imaging to obtain an image of the object to be photographed. The driving device 3 is adapted to drive the optical lens 1 to move to achieve optical performance adjustment.

[0108] Further, the optical lens 1 has an optical axis, and the direction of the optical axis is parallel to the Z-axis in the height direction of the camera module. The photosensitive component 2 is disposed opposite to the optical lens 1 along the direction of the optical axis.

[0109] In some embodiments, the optical lens 1 includes a lens barrel 11 and at least one optical lens 12 mounted in the lens barrel 11. The at least one optical lens 12 is disposed in the lens barrel 11 along the optical axis. The optical lens 1 is mounted on the carrier 33 of the driving device 3 through the lens barrel 11.

[0110] In some embodiments, the lens barrel 11 of the optical lens 1 and the carrier 33 are integrally formed. It is equivalent to at least one lens being directly mounted 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 direction and the length direction.

[0111] Further, 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. Among them, the photosensitive chip 21 is configured 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 may be one or more of passive electronic devices such as resistors and capacitors, or may be one or more of active electronic devices such as driving chips and storage chips.

[0112] In some embodiments, the photosensitive component 2 includes a filter element 22. The filter element 22 is held on the light-sensitive path of the photosensitive chip 21 to filter the imaging light incident on the photosensitive chip 21 and filter out the light that is not required for imaging in the incident light, such as infrared light. Further, the photosensitive component 2 further includes a bracket 23. The filter element 22 is mounted on the bracket 23, and the bracket 23 is fixed to the imaging circuit board 24. Thus, the filter element 22 is fixed to the imaging circuit board 24 through the bracket 23.

[0113] In some embodiments, the driving device 3 can be fixed to the photosensitive component 2 by being fixed to the bracket 23. By transmitting stress through the bracket 23, the photosensitive component 2 can be prevented from directly bearing 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. At this time, the bracket 23 is retracted inward compared to the edge of the imaging circuit board 24 to provide a position for fixing the driving device 3, reducing the space occupied by the bracket 23 and making the entire device more compact.

[0114] 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. What is described in the above embodiments and the specification is only the principle of the present application. Without departing from the spirit and scope of the present application, the present application will have various changes and improvements, and these changes and improvements all fall within the scope of the present application claimed. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A driving device, characterized in that, Comprising: Base; Support assembly; Carrier, the carrier having a light-transmitting hole penetrating along the optical axis, the carrier having a first corner and a second corner at diagonal positions, and the carrier being supported by the support assembly on the base at the first corner and the second corner; And Drive assembly for driving the carrier to move along the optical axis relative to the base, the drive assembly including a first drive portion and a second drive portion disposed on opposite sides of the carrier, the first drive portion including a first magnet and a first coil disposed opposite to each other, the first magnet being disposed on one of the carrier or the base, and the first coil being disposed on the other of the carrier or the base; the second drive portion including a second magnet and a second coil disposed opposite to each other, the second magnet being disposed on one of the carrier or the base, and the second coil being disposed on the other of the carrier or the base, Along 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. When the drive assembly operates, when observed along a direction perpendicular to the optical axis, the current directions in the first coil and the second coil are opposite; Or, Along 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. When the drive assembly operates, when observed along a direction perpendicular to the optical axis, the current directions in the first coil and the second coil are the same.

2. The drive device according to claim 1, characterized in that, The carrier further 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 drive portion is disposed on the first side surface, the second drive portion is disposed on the third side surface, the first side surface and the third side surface are parallel to a second direction, the second side surface and the fourth side surface are parallel to a first direction, the first direction and the second direction are perpendicular to each other and both are perpendicular to the optical axis, and along the second direction, the first drive portion and the second drive portion are disposed in a staggered manner.

3. The drive device according to claim 2, characterized in that, The support assembly includes a first guide member and a second guide member disposed on the base and extending 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 and the central axis of the second guide member along the optical axis are connected to form a support surface. The support surface has a central axis of the support surface along the optical axis direction, and the perpendicular distances from the central axis of the support surface to the first guide member and the second guide member are equal. The first drive portion and the second drive portion are respectively located on both sides of the central axis of the support surface along the second direction.

4. The drive device according to claim 3, characterized in that, The support assembly further includes a first magnetic member disposed at the first corner and a second magnetic member disposed at the second corner. The first guide member is disposed opposite to the first magnetic member, and the second guide member is disposed opposite to the second magnetic member.

5. The drive device according to claim 4, characterized in that, There are at least two contact positions spaced along the optical axis direction between the first guiding member and the carrier, there is at least one contact position between the second guiding member and the carrier, there is a first magnetic attraction force between the first magnetic member and the first guiding member, there is a second magnetic attraction force between the second magnetic member and the second guiding 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 drive device according to claim 4 or 5, characterized in that In a plane perpendicular to the optical axis, the included angle α between the line connecting the geometric centers of the second guiding member and the second magnetic member and the line connecting the geometric centers of the second guiding member and the first guiding member satisfies α ≤ 90°.

7. The drive 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 drive device according to claim 7, characterized in that, A first avoidance hole is formed at the position of the second side surface of the carrier facing the first magnetic member, a second avoidance hole is formed at the position of the third side surface of the carrier facing the second magnetic member, the base includes a side wall disposed around the outside of the carrier, and a first avoidance opening is formed at the position of the side wall of the base opposite to the first avoidance hole of the second side surface of the carrier. The size of the first avoidance opening is larger than that of the first avoidance hole, and the part 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 drive device according to claim 8, characterized in that, The base further includes a conductive portion disposed around the side wall of the base, and a second avoidance opening is formed at the position of the conductive portion opposite to the first avoidance opening.

10. The drive device according to claim 7, characterized in that, The first magnet is disposed on the first side surface of the carrier, the second magnet is disposed on the third side surface of the carrier, a position sensing magnet is disposed on the second side surface of the carrier, and a position sensor is disposed on the base opposite to the position sensing magnet. The perpendicular distance between the central axis of the light passing hole and the fourth side surface is less than its perpendicular distance from the second side surface.

11. The drive device according to claim 4, characterized in that, The carrier has a non-coplanar first contact surface and a second contact surface at the first corner, the first guiding 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 guiding member contacts the third contact surface; The central axes of the first guiding member and the second guiding member along the optical axis direction are connected to form a support surface, the third contact surface is parallel to the support surface, the included angle between the first contact surface and the support surface is θ1, and the included angle between the second contact surface and the support surface is θ2, where θ1 ≠ 90° and θ2 ≠ 90°.

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

13. The drive device according to claim 11, characterized in that, The surface of the second magnetic member facing the second guiding member is parallel to the third contact surface; the surfaces of the first magnetic member facing the first guiding member are acute angles with both the first contact surface and the second contact surface.

14. The drive device according to claim 11, characterized in that, The surface of the first magnetic member facing the first guiding member and the surface of the second magnetic member facing the second guiding member are respectively parallel to the support surface.

15. An imaging module, characterized in that, Comprising: An optical lens; A photosensitive component, disposed opposite to the optical lens along the optical axis direction, for receiving the light emitted by the optical lens to perform imaging so as to obtain an image of the object to be photographed; And A driving device as described in any one of claims 1-14, the optical lens is held on the light-sensitive path of the photosensitive component by the driving device, and the driving device is adapted to drive 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 a camera module as described in claim 15.

Images