Reflection driving assembly, magnet assembling method therefor, reflection module and camera module

Abstract

The present application belongs to the technical field of camera modules. Disclosed are a reflection driving assembly, a magnet assembling method therefor, a reflection module and a camera module. The reflection driving assembly comprises: a reflection base; a carrier, which is rotatably arranged on the reflection base and is adapted to carry a reflection element, the reflection element being able to reflect light rays in a direction parallel to a first axis to a direction parallel to a second axis; a reflection driving part, which comprises a second rotating magnet and a second rotating coil that are arranged opposite to each other so as to drive the carrier to rotate about a third axis with respect to the reflection base, the third axis being perpendicular to the first axis and the second axis; and a rotation position sensing part, which comprises a first sensing magnet and a first rotation sensing element that are adapted to measure the angle of rotation of the carrier about the third axis, the first sensing magnet and the second rotating magnet being arranged opposite to each other in a direction perpendicular to the third axis, and the first rotation sensing element being adapted to simultaneously sense magnetic fields of the first sensing magnet and the second rotating magnet. The present application can accurately sense the position of rotation of the carrier about the third axis, so as to implement closed-loop control.

Description

Reflection driving assembly, magnet assembling method thereof, reflection module and camera module TECHNICAL FIELD

[0001] The present application relates to the technical field of camera modules, in particular to a reflection driving assembly, a magnet assembling method thereof, a reflection module and a camera module. BACKGROUND

[0002] A camera module with a long-focus camera function needs to have a long focal length to obtain a clear image of an object at a long distance. However, a long focal length means that the camera module has a long length dimension, and therefore at least one reflection module that can reflect light can be provided in the camera module to fold the optical path of the camera module, thereby avoiding an excessively long size of the camera module.

[0003] The reflection module folds the optical path with a reflection element and is provided with a corresponding reflection driving assembly to adjust the position of the reflection element to adjust the optical path, thereby further improving the imaging function of the camera module. In order to realize closed-loop control of the reflection module, it is necessary to sense the position of the reflection element.

[0004] SUMMARY

[0005] One object of the present application is to provide a reflection driving assembly capable of sensing the position of a reflection element to realize closed-loop control.

[0006] Another object of the present application is to provide a magnet assembling method of a reflection driving assembly.

[0007] Another object of the present application is to provide a camera module capable of folding an optical path and having a good imaging function.

[0008] One object of the present application is to provide a reflection module capable of detecting the position of a reflection element in the reflection module, which is conducive to closed-loop control of the position of the reflection element to improve imaging quality.

[0009] To achieve one of the objects of the present application, the technical solution adopted by the present application is a reflection driving assembly, comprising:

[0010] a reflection base;

[0011] a carrier rotatably arranged on the reflection base, the carrier being adapted to carry a reflection element, the reflection element being adapted to reflect light propagating in a direction parallel to a first axis to propagate in a direction parallel to a second axis;

[0012] a reflection driving part comprising a second rotation magnet and a second rotation coil arranged oppositely, the second rotation magnet and the second rotation coil being adapted to cooperatively drive the carrier to rotate about a third axis relative to the reflection base, the third axis being perpendicular to the first axis and the second axis.

[0013] The rotation position sensing unit comprises a first sensing magnet and a first rotation sensing element adapted to detect the rotation angle of the carrier around the third axis, the first sensing magnet is arranged opposite to the second rotation magnet along a direction perpendicular to the third axis, and the first rotation sensing element is adapted to simultaneously sense the magnetic field of the first sensing magnet and the second rotation magnet.

[0014] In some embodiments, the projection of the first rotation sensing element along the perpendicular direction of the side of the first rotation sensing element facing the second rotation magnet overlaps with the first sensing magnet and the second rotation magnet.

[0015] In some embodiments, the second rotation magnet and the second rotation coil are arranged opposite along a direction parallel to the second axis, the first sensing magnet and the second rotation magnet are arranged opposite along a direction parallel to the first axis, and the first rotation sensing element is arranged opposite to the first sensing magnet and the second rotation magnet along a direction parallel to the second axis.

[0016] In some embodiments, the projection of the second rotation magnet and the projection of the second rotation coil overlap with the first axis along a direction parallel to the second axis, the first rotation sensing element is arranged on one side of the second rotation coil along a direction parallel to the first axis, and the first sensing magnet is arranged on one side of the second rotation magnet along a direction parallel to the first axis.

[0017] In some embodiments, the first rotation sensing element is arranged outside the second rotation coil.

[0018] In some embodiments, the reflection driving unit further comprises a first rotation magnet and a first rotation coil, the first rotation magnet and the first rotation coil are adapted to cooperatively drive the carrier to rotate around the first axis relative to the reflection base, the first rotation coil and the second rotation coil are located on the same side of the reflection driving assembly along a direction perpendicular to the third axis, and the first rotation sensing element is arranged outside the first rotation coil.

[0019] In some embodiments, the magnetic poles of the first sensing magnet and the second rotation magnet on the side facing each other are opposite.

[0020] In some embodiments, a spacing plate is arranged between the first sensing magnet and the second rotation magnet.

[0021] In some embodiments, the side of the first sensing magnet away from the second rotation magnet is inclined towards or away from the first rotation sensing element.

[0022] In some embodiments, the first sensing magnet has an inclination angle no more than 45°.

[0023] In some embodiments, a side of the first sensing magnet facing the first rotation sensing element has an extension distance no more than 1.2mm in a direction perpendicular to the third axis, and a side of the first sensing magnet facing the second rotation magnet has an extension distance no less than 0.4mm in a direction perpendicular to the third axis.

[0024] In some embodiments, the first sensing magnet is closer to the first rotation sensing element than the second rotation magnet in a direction in which the first sensing magnet and the second rotation magnet are oppositely arranged.

[0025] In some embodiments, the carrier is provided with a first sensing magnet slot having a first inclination limiting surface and a second inclination limiting surface arranged perpendicularly to each other, the first inclination limiting surface and the second inclination limiting surface being adapted to abut two adjacent sides of the first sensing magnet, so that the first sensing magnet is installed in the first sensing magnet slot in an inclined manner.

[0026] In some embodiments, the first sensing magnet and the second rotation magnet are installed on the carrier, and the carrier is provided with a reflective magnetic guide sheet, the reflective magnetic guide sheet avoiding the first sensing magnet and being oppositely arranged with the second rotation magnet.

[0027] In some embodiments, the rotation position sensing part further comprises a second rotation sensing element and a second sensing magnet, the second rotation sensing element and the second sensing magnet being oppositely arranged to cooperatively detect a rotation angle of the carrier around the first axis.

[0028] To achieve one of the purposes of the present application, the technical solution adopted by the present application is a magnet assembling method of a reflection driving assembly, applied to any of the above-mentioned reflection driving assemblies, which comprises the following steps: A, providing a carrier, a second rotation magnet adapted to drive the carrier to rotate around a third axis, and a first sensing magnet adapted to detect a rotation angle of the carrier around the third axis; B, installing the first sensing magnet on one side of the carrier; C, installing the second rotation magnet on the carrier, so that the second rotation magnet and the first sensing magnet are oppositely arranged in a direction perpendicular to the third axis.

[0029] In some embodiments, between step B and step C, there is further step D: providing two first rotation magnets adapted to drive rotation of the carrier about a first axis perpendicular to the third axis, spacing the two first rotation magnets on the carrier and mounting them on the same side of the carrier as the first sensing magnet, so that the second rotation magnet can be mounted between the two first rotation magnets in step C.

[0030] In some embodiments, the magnetic poles of the second rotation magnet on the side facing the first sensing magnet are the same as the magnetic poles of the first rotation magnets on the sides facing the second rotation magnet, and the magnetic poles of the second rotation magnet on the side facing away from the first sensing magnet are opposite to the magnetic poles of the first rotation magnets on the sides facing the second rotation magnet.

[0031] In some embodiments, one side of the carrier is inwardly recessed to form a first sensing magnet slot and a rotation magnet slot, the first sensing magnet is bonded in the first sensing magnet slot, and the first rotation magnet and the second rotation magnet are bonded in the rotation magnet slot.

[0032] In some embodiments, in step D, the two first rotation magnets are inserted into the rotation magnet slot in sequence along a direction parallel to the first axis, and in step C, the second rotation magnet is inserted into the rotation magnet slot along a direction parallel to the first axis.

[0033] To achieve one of the purposes of the present application, the technical solution adopted by the present application is as follows:

[0034] a reflection base;

[0035] a carrier rotationally arranged on the reflection base and adapted to carry a reflection element, the reflection element being adapted to reflect light propagating along a direction parallel to a first axis to propagate along a direction parallel to a second axis, the second axis intersecting the first axis;

[0036] a reflection driving part adapted to drive the carrier to rotate about the first axis and a third axis relative to the base, the third axis being perpendicular to the first axis and the second axis;

[0037] a rotation position sensing part including a first sensing magnet and a first rotation sensing element arranged opposite to each other along a direction parallel to the first axis, the first rotation sensing element being arranged on a bottom of the reflection base, and the first sensing magnet being arranged on a side of the carrier close to the bottom of the reflection base along a direction parallel to the first axis;

[0038] The bottom of the reflection base is provided with a magnetic yoke, which is arranged opposite to the first sensing magnet along a direction parallel to the first axis and is adapted to apply a magnetic attraction force to the carrier along a direction parallel to the first axis towards the reflection base.

[0039] In some embodiments, the first sensing magnet and the magnetic yoke are both symmetrically arranged about the third axis and are both symmetrically arranged about the second axis in a projection along a direction parallel to the first axis.

[0040] In some embodiments, the magnetic yoke is provided with a yoke opening, the first rotation sensing element is arranged in the yoke opening, and a part of the first sensing magnet is overlapped with the projection of the first rotation sensing element and the yoke opening in a projection along a direction parallel to the first axis. In a direction parallel to the third axis, the size of the first sensing magnet is greater than the size of the yoke opening.

[0041] In some embodiments, the size of the yoke opening is greater than the size of the first sensing magnet in a direction parallel to the second axis.

[0042] In some embodiments, in the process of rotating the carrier about the third axis, a projection of the first sensing magnet along a direction parallel to the first axis has a size in a direction parallel to the second axis that is less than the size of the yoke opening. When the carrier is not rotating relative to the reflection base, the size of the yoke opening in a direction parallel to the second axis is greater than the size of the first sensing magnet by at least 0.2 mm.

[0043] In some embodiments, the first rotation sensing element does not protrude from or protrude from a side of the magnetic yoke close to the carrier in a direction parallel to the first axis.

[0044] In some embodiments, a flexible protective layer is further included, which covers the first rotation sensing element.

[0045] In some embodiments, a frame, a first support portion and a second support portion are further included. The frame is arranged on the reflection base and is adapted to carry the carrier. The frame and the reflection base are connected through the first support portion, so that the frame can rotate relative to the reflection base about the first axis. The carrier and the frame are connected through the second support portion, so that the carrier can rotate relative to the frame about the third axis.

[0046] In some embodiments, one of the frame and the reflective base is provided with an arc-shaped slot, the other is provided with three auxiliary slots, and two ends of the arc-shaped slot respectively extend to two opposite sides of the bottom of the frame or the reflective base along a direction parallel to the third axis, the three auxiliary slots are arranged at intervals along the arc-shaped slot, the first support part includes three auxiliary balls arranged between each of the auxiliary slots and the arc-shaped slot, the first axis passes through the center of a virtual circle in which the arc-shaped slot is located, and the auxiliary balls cooperate with the arc-shaped slot and the auxiliary slots to guide the frame to rotate relative to the reflective base about the first axis.

[0047] In some embodiments, the three auxiliary slots include a first limiting slot, a second limiting slot, and a loosely-fitted accommodating slot, and directions in which the first limiting slot and the second limiting slot limit the respective auxiliary balls are perpendicular to each other.

[0048] In some embodiments, the first limiting slot extends along a direction parallel to the third axis, and the second limiting slot extends along a direction parallel to the second axis.

[0049] In some embodiments, the frame is provided with two rotation-axis lower slots, the carrier is provided with two rotation-axis upper slots, the two rotation-axis lower slots are arranged on two opposite sides of the frame along a direction parallel to the third axis, and the two rotation-axis upper slots are respectively arranged opposite to the two rotation-axis lower slots, the second support part includes two rotation-axis balls arranged between each of the rotation-axis lower slots and the corresponding rotation-axis upper slot, the third axis passes through the two rotation-axis balls, the rotation-axis balls cooperate with the rotation-axis upper slots and the rotation-axis lower slots to guide the carrier to rotate relative to the frame about the third axis, and the third axis projects along a direction parallel to the first axis, the projection of the third axis passes through two opposite sides of the projection of the arc-shaped slot, and the first sensing magnet is arranged in an area surrounded by the arc-shaped slot.

[0050] In some embodiments, the rotation position sensing part further includes a second rotation sensing element and a second sensing magnet, the second rotation sensing element is arranged on one side of the reflective base along a direction parallel to the third axis, and the second sensing magnet is arranged opposite to the second rotation sensing element along a direction parallel to the third axis.

[0051] In some embodiments, the second sensing magnet is arranged on one side of the carrier along a direction parallel to the third axis, and a counterweight element is arranged on the other opposite side of the carrier and arranged opposite to the second sensing magnet along a direction parallel to the third axis.

[0052] In some embodiments, the second support portion is disposed on one side of the first axis along a direction parallel to the second axis, and the second sensing magnet is disposed on the carrier and on an opposite side of the first axis along the direction parallel to the second axis.

[0053] In some embodiments, the second rotation sensing element is spaced apart from the first axis by a distance greater than or equal to 0.5 mm and less than or equal to 3.5 mm along a direction parallel to the third axis.

[0054] In some embodiments, the second sensing magnet is disposed on one side of the frame along a direction parallel to the third axis, and the carrier is provided with the reflection driving portion on one side along a direction parallel to the second axis, the reflection driving portion including a rotation magnet disposed on the carrier and a rotation coil disposed on the reflection base, the frame is provided with the second sensing magnet on one side along a direction parallel to the third axis and an auxiliary magnet on an opposite side, the auxiliary magnet and the rotation magnet generate an interactive magnetic force to avoid the carrier from deflecting relative to the frame under the magnetic force between the second sensing magnet and the rotation magnet.

[0055] In some embodiments, the reflection driving portion includes a first rotation magnet and a first rotation coil for driving the carrier to rotate around the first axis, the first rotation magnet is disposed on the carrier, and the first rotation coil is disposed on the reflection base, the reflection base is provided with a second rotation sensing element opposite to the first rotation magnet to detect an angle of rotation of the carrier around the first axis.

[0056] To achieve one of the purposes of the present application, the technical solution adopted by the present application is a camera module, which comprises:

[0057] The emission module comprises a reflection element and any of the reflection driving assemblies described above.

[0058] The lens module is held on the light reflection path of the reflection module; and

[0059] The imaging module receives the light emitted by the lens module to form an image.

[0060] To achieve one of the purposes of the present application, the technical solution adopted by the present application is a reflection module, which comprises:

[0061] The reflection element is adapted to reflect light propagating along a direction parallel to a first axis to propagate along a direction parallel to a second axis, the second axis intersects the first axis; and

[0062] The reflection driving assembly comprises a reflection base, a carrier, a reflection driving part and a rotation position sensing part. The carrier is rotationally arranged on the reflection base and is adapted to carry the reflection element. The reflection driving part is adapted to drive the carrier to rotate relative to the reflection base around the first axis and simultaneously around a third axis perpendicular to the first axis and the second axis. The rotation position sensing part comprises a first sensing magnet and a first rotation sensing element arranged opposite to each other along a direction parallel to the first axis, and a second sensing magnet and a second rotation sensing element arranged opposite to each other along a direction parallel to the first axis. The first rotation sensing element and the second rotation sensing element are arranged on a side of the reflection base facing the carrier, and the first sensing magnet and the second sensing magnet are arranged on a side of the carrier facing the reflection base, so that the angle of rotation of the carrier around the first axis and the third axis can be detected by the first rotation sensing element and the second rotation sensing element.

[0063] As a preferred option, the first rotation sensing element obtains first magnetic field information of the first sensing magnet, and the second rotation sensing element obtains second magnetic field information of the second sensing magnet, so that the rotation angle of the carrier around the third axis can be calculated by the sum of the first magnetic field information and the second magnetic field information, and the rotation angle of the carrier around the first axis can be calculated by the difference between the first magnetic field information and the second magnetic field information.

[0064] As a preferred option, the first rotation sensing element and the second rotation sensing element are arranged opposite to each other along a direction parallel to the third axis.

[0065] As a preferred option, the first rotation sensing element and the second rotation sensing element have the same sensitivity.

[0066] As a preferred option, the first sensing magnet and the second sensing magnet are multi-pole magnets, both comprising an N-pole region, an S-pole region and a neutral region between the N-pole region and the S-pole region. When the carrier is in an initial position, the neutral region of the first sensing magnet is opposite to the first rotation sensing element, and the neutral region of the second sensing magnet is opposite to the second rotation sensing element.

[0067] As a preferred option, the carrier comprises a carrier main body, a first carrier side arranged on one side of the carrier main body, and a second carrier side arranged on the other side of the carrier main body opposite to the first carrier side. The carrier main body, the first carrier side and the second carrier side cooperatively form a reflection element accommodating cavity adapted to accommodate the reflection element. The carrier main body comprises a carrier base extending along a direction perpendicular to the first axis and a third carrier side arranged above the carrier base. The first sensing magnet and the second sensing magnet are arranged on the carrier base.

[0068] As a preferred, the reflection base comprises a reflection base plate and first, second, third reflection base side parts arranged in sequence on three sides of the reflection base plate, the reflection base plate is arranged opposite to the carrier base plate, the first rotation sensing element and the second rotation sensing element are arranged on the reflection base plate, the second reflection base side part is arranged opposite to the third carrier side part, and the reflection driving part is arranged between the second reflection base side part and the third carrier side part.

[0069] As a preferred, the reflection driving part comprises a first rotation magnet and a first rotation coil arranged opposite to each other along a direction parallel to the second axis, and a second rotation magnet and a second rotation coil arranged opposite to each other along a direction parallel to the second axis, the first rotation magnet and the first rotation coil cooperatively drive the carrier to rotate around the first axis, and the second rotation magnet and the second rotation coil cooperatively drive the carrier to rotate around the third axis.

[0070] As a preferred, the reflection base further comprises a reflection magnetic attraction part, the reflection magnetic attraction part comprises a first magnetic attraction yoke and a second magnetic attraction yoke arranged on the reflection base plate, the first magnetic attraction yoke is arranged opposite to the first sensing magnet along a direction parallel to the first axis, and the second magnetic attraction yoke is arranged opposite to the second sensing magnet along a direction parallel to the first axis, the reflection magnetic attraction part is capable of exerting a magnetic attraction force on the carrier along a direction parallel to the first axis towards the reflection base plate.

[0071] As a preferred, the first magnetic attraction yoke is provided with a first opening, the second magnetic attraction yoke is provided with a second opening, the first rotation sensing element is arranged in the first opening, and the second rotation sensing element is arranged in the second opening.

[0072] As a preferred, in a projection along a direction parallel to the first axis, a projection area of a face of the first sensing magnet towards the first rotation sensing element is greater than a projection area of the first opening, and a projection area of a face of the second sensing magnet towards the second rotation sensing element is greater than a projection area of the second opening.

[0073] As a kind of preferred, it also includes electrically conductive insert, the electrically conductive insert is arranged on the side of magnetic yoke away from the carrier, the first rotation sensing element, the second rotation sensing element is fixedly connected with the electrically conductive insert respectively, and the first rotation sensing element, the second rotation sensing element is spaced apart from the carrier in the direction parallel to the first axis, and the spacing is greater than or equal to the spacing between the magnetic yoke and the carrier, or the electrically conductive insert is bent towards the carrier, so that the first rotation sensing element, the second rotation sensing element is spaced apart from the carrier in the direction parallel to the first axis, and the spacing is less than the spacing between the magnetic yoke and the carrier.

[0074] As a kind of preferred, it also includes frame arranged between the carrier and the reflection base, the carrier is adapted to rotate around the third axis relative to the frame, and the frame is adapted to drive the carrier to rotate around the first axis relative to the reflection base.

[0075] As a kind of preferred, one of the reflection base and the frame is fixedly provided with a rotation shaft support, and the other is provided with a corresponding rotation shaft positioning groove, the rotation shaft support is adapted to be inserted into the rotation shaft positioning groove, the rotation shaft support and the rotation shaft positioning groove cooperate to define the first axis, the first magnetic yoke and the second magnetic yoke are connected by a magnetic attraction connecting portion, and the magnetic attraction connecting portion is provided with a avoiding portion for avoiding the rotation shaft support or the rotation shaft positioning groove.

[0076] As a kind of preferred, the frame is provided with an avoiding hole penetrating in the direction parallel to the first axis, and the projection of the first sensing magnet and the second sensing magnet in the direction parallel to the first axis is located within the projection of the avoiding hole; the carrier is provided with a mounting groove protruding towards the avoiding hole in the direction parallel to the first axis, and the first sensing magnet and the second sensing magnet are arranged in the mounting groove.

[0077] To achieve one of the purposes of the present application, the technical scheme adopted by the present application is as follows: a camera module, comprising:

[0078] Any of the above reflection modules;

[0079] A lens module is held on the light reflection path of the reflection module; and

[0080] An imaging module receives the light emitted by the lens module for imaging.

[0081] The reflection driving part, the rotation position sensing part in the reflection module and the imaging module are electrically connected through a conductive insert which extends from the lens module to the imaging module along the direction parallel to the second axis based on the reflection base.

[0082] Compared with the prior art, the application has the beneficial effect that the first sensing magnet and the first rotation sensing element cooperate to detect the angle of rotation of the carrier around the third axis, which can accurately sense the position of the carrier rotating around the third axis, thereby sensing the position of the reflection element, and further cooperating with the reflection driving part to realize closed-loop control of the entire reflection module. BRIEF DESCRIPTION OF DRAWINGS

[0083] FIG. 1 is a cross-sectional structure schematic diagram of a camera module in some embodiments of the application.

[0084] FIG. 2 is an exploded structure schematic diagram of a camera module in some embodiments of the application.

[0085] FIGS. 3A and 3B are exploded structure schematic diagrams of a reflection driving assembly in some embodiments of the application.

[0086] FIG. 4 is a partial structure schematic diagram of a reflection driving assembly in some embodiments of the application.

[0087] FIG. 5 is a cross-sectional structure schematic diagram of a reflection module in some embodiments of the application.

[0088] FIG. 6 is another partial structure schematic diagram of a reflection driving assembly in some embodiments of the application.

[0089] FIG. 7 is still another partial structure schematic diagram of a reflection driving assembly in some embodiments of the application.

[0090] FIG. 8 is a structure schematic diagram of a lens module in some embodiments of the application.

[0091] FIG. 9 is an enlarged schematic diagram of partial structure I in FIG. 8.

[0092] FIG. 10 is an exploded view of a partial structure of a lens module in some embodiments of the application.

[0093] FIG. 11 is a cross-sectional structure schematic diagram of a camera module in some embodiments of the application.

[0094] FIG. 12 is an exploded structure schematic diagram of a reflection module in some embodiments of the application.

[0095] FIG. 13 is an exploded structure schematic diagram of a reflection driving assembly in some embodiments of the application.

[0096] FIG. 14 is a structure schematic diagram of a reflection base in some other embodiments of the application.

[0097] Fig. 15 is a schematic diagram of a partial structure of a reflection module with respect to a bottom of a frame in some embodiments of the present application;

[0098] Fig. 16 is a schematic diagram of a cross-sectional structure of a reflection module in some embodiments of the present application;

[0099] Fig. 17 and Fig. 18 are schematic diagrams of the influence of a magnetic yoke (magnetic conducting sheet) on magnetic difference;

[0100] Fig. 19 is a schematic diagram of a partial structure of a reflection module with respect to a second sensing magnet in some embodiments of the present application;

[0101] Fig. 20 is a schematic diagram of a partial structure of a reflection module with respect to a second sensing magnet in some embodiments of the present application;

[0102] Fig. 21 is a schematic diagram of an exploded structure of a reflection module in some embodiments of the present application.

[0103] Fig. 22 is a schematic diagram of a cross-sectional structure of a reflection module in some embodiments of the present application.

[0104] Fig. 23 is a schematic diagram of a structure of a reflection base in some embodiments of the present application.

[0105] Fig. 24 is a schematic diagram of a structure of a carrier in some embodiments of the present application.

[0106] Fig. 25 is a schematic diagram of a partial structure of a reflection module at a first rotation sensing element in some embodiments of the present application.

[0107] Fig. 26 is a schematic diagram of a structure of a camera module in some embodiments of the present application.

[0108] Fig. 27 is a schematic diagram of a cross-sectional structure of a camera module in some embodiments of the present application.

[0109] Fig. 28 is a schematic diagram of an exploded structure of a partial structure of a camera module in some embodiments of the present application. DETAILED DESCRIPTION

[0110] In the following, the present application will be further described with specific embodiments. It should be noted that the following described embodiments or technical features can be combined with each other to form new embodiments without conflict.

[0111] In the description of the present application, it should be noted that for the orientation words, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0112] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence.

[0113] As shown in FIG. 1 and FIG. 2, the present application provides a camera module, which comprises a reflection module 10, a lens module 20 and an imaging module 30, wherein the reflection module 10 is used to reflect light rays propagating along a direction parallel to a first axis Y to a direction parallel to a second axis X, the first axis Y and the second axis X are arranged intersecting each other; the lens module 20 is held on the light reflection path of the reflection module 10, and is used to converge light rays; the imaging module 30 is held on the path of the imaging light rays emitted by the lens module 20, and is used to receive the imaging light rays emitted by the lens module 20 for imaging.

[0114] In some embodiments, the direction of the second axis X is generally the length direction of the camera module, and the reflection module 10, the lens module 20 and the imaging module 30 are arranged in sequence along the direction of the second axis X. The reflection module 10 is arranged to accept incident light rays in the direction of the first axis Y and reflect them to the direction of the second axis X, thereby facilitating the reduction of the size of the camera module in the direction of the second axis X, i.e. the length direction of the camera module. Further, the direction of the first axis Y is generally the height direction of the camera module, in other words, the first axis Y and the second axis X are perpendicular to each other. In other words, the reflection module 10 is adapted to reflect the incident light rays by 90° before emitting them. In other embodiments, the first axis Y and the second axis X can also form an angle other than 90° in space. In addition, the first axis Y and the second axis X in the present application can be coplanar or non-coplanar.

[0115] Further, for the convenience of description, the application also defines a third axis Z, which is perpendicular to the first axis Y and the second axis X. It is worth mentioning that in the present application, the case that two axes are perpendicular to each other can include the following two cases: one is that the two axes intersect in the same plane and the intersection angle is a right angle, forming a traditional perpendicular relationship; the other is that the two axes are located in different planes, although they do not intersect, but their respective direction vectors are perpendicular to each other, forming a spatial perpendicular relationship. In other words, the perpendicular relationship between any two of the first axis Y, the second axis X and the third axis Z can be intersecting or spatial. When they intersect, the intersection angle is a right angle, forming a traditional perpendicular relationship; when they do not intersect, their respective direction vectors are perpendicular to each other, forming a spatial perpendicular relationship. In one example, as shown in FIG. 1, the first axis Y and the third axis Z do not intersect, the direction vector of the first axis Y and the direction vector of the third axis Z are perpendicular to each other, and the first axis Y and the third axis Z are spatially perpendicular to each other. Further, the second axis X and the third axis Z do not intersect, the direction vector of the second axis X and the direction vector of the third axis Z are perpendicular to each other, and the second axis X and the third axis Z are spatially perpendicular to each other.

[0116] In some embodiments, the reflection module 10 includes a reflection element 11 and a reflection driving assembly 12, the reflection element 11 is adapted to reflect light rays propagating in a direction parallel to the first axis Y to propagate in a direction parallel to the second axis X, the second axis X intersects the first axis Y, and the reflection driving assembly 12 is used to drive the reflection element 11 to realize optical anti-shake, camera angle adjustment and other functions. More specifically, the reflection driving assembly 12 is adapted to drive the reflection element 11 to rotate along the first axis Y and the third axis Z to realize multi-dimensional adjustment.

[0117] In some embodiments, the reflection element 11 is specifically a prism or a mirror, and the reflection element 11 at least includes one light reflection surface 18 for turning light rays, the light reflection surface 18 is obliquely arranged, and the carrier 125 is provided with at least an oblique mounting surface 12541 corresponding to the light reflection surface 18, and the reflection element 11 is fixed on the carrier 125 to synchronously follow the movement of the carrier 125. Further, the oblique mounting surface 12541 is provided with a supporting plane 12542 close to one side of the carrier base 12511 to correspond to the edge close to the carrier base 12511 of the reflection element 11. Preferably, before assembling the reflection element 11, the rotating magnet, the sensing magnet and other components to the carrier 125, the supporting plane 12542 is pre-processed by laser engraving to reduce its reflection to light.

[0118] In some embodiments, referring to FIG. 3A, FIG. 3B and FIG. 4, the reflection driving assembly 12 comprises a reflection base 121, a carrier 125, a reflection driving part 126, a rotation position sensing part 128 and a reflection cover 129, wherein the reflection base 121 serves as a support structure of the whole reflection driving assembly 12, and provides a stable mounting platform for other components in the reflection driving assembly 12; the reflection cover 129 is mounted on the reflection base 121, and cooperates with the reflection base 121 to form a relatively sealed mounting space; the carrier 125 is movably arranged on the reflection base 121 and is adapted to carry the reflection element 11, so that the movement of the carrier 125 relative to the reflection base 121 can realize the movement of the reflection element 11 relative to the reflection base 121; the reflection driving part 126 is adapted to drive the carrier 125 to move relative to the reflection base 121; and the rotation position sensing part 128 is used to sense the position of the carrier 125 and the reflection element 11 thereon relative to the reflection base 121, so as to realize closed-loop control of the position of the reflection element 11 in cooperation with the reflection driving part 126.

[0119] In some embodiments, the carrier 125 is rotatably arranged on the reflection base 121, and the reflection driving part 126 is adapted to drive the carrier 125 to rotate relative to the reflection base 121 about a first axis Y and a third axis Z which is perpendicular to the first axis Y and a second axis X. Correspondingly, the rotation position sensing part 128 comprises a first sensing magnet 1283 and a first rotation sensing element 1281 adapted to detect the rotation angle of the carrier 125 about the third axis Z, and a second sensing magnet 1284 and a second rotation sensing element 1282 adapted to detect the rotation angle of the carrier 125 about the first axis Y.

[0120] In some embodiments, the reflective base 121 comprises a reflective base substrate 1211 and reflective base sides arranged around the reflective base substrate 1211. Specifically, the reflective base sides comprise a first reflective base side 1212, a second reflective base side 1213 and a third reflective base side 1214 arranged in sequence, the first reflective base side 1212 and the third reflective base side 1214 are oppositely arranged along the third axis Z, the second reflective base side 1213 connects the first reflective base side 1212 and the third reflective base side 1214 and is oppositely arranged with the lens module 20 along the second axis X. Correspondingly, the carrier 125 comprises a carrier main body 1251, a first carrier side 1252 and a second carrier side 1253, the first carrier side 1252 and the second carrier side 1253 are arranged on two opposite sides of the carrier main body 1251 along the third axis Z, further, the carrier main body 1251 can comprise a carrier substrate 12511 and a third carrier side 12512, the carrier substrate 12511 is arranged above the reflective base substrate 1211, the third carrier side 12512 is oppositely arranged with the second reflective base side 1213, the three carrier sides are arranged around the carrier substrate 12511 to form a reflective element accommodating cavity suitable for mounting the reflective element 11.

[0121] In some embodiments, the reflective driving assembly 12 further comprises a support structure arranged between the carrier 125 and the reflective base 121 for realizing the movability of the carrier 125 relative to the reflective base 121.

[0122] In some embodiments, the support structure specifically comprises a frame 123, a first support part 122 and a second support part 124, the frame 123 is arranged on the reflective base 121 and is suitable for carrying the carrier 125, the frame 123 and the reflective base 121 are connected through the first support part 122, so that the frame 123 can rotate relative to the reflective base 121 around the first axis Y, the carrier 125 and the frame 123 are connected through the second support part 124, so that the carrier 125 can rotate relative to the frame 123 around the third axis Z, thereby realizing the rotation of the carrier 125 relative to the reflective base 121 around the first axis Y and the third axis Z.

[0123] In some embodiments, the frame 123 specifically comprises a frame body 1231, a first frame side 1232 and a second frame side 1233, the first frame side 1232 and the second frame side 1233 are arranged at two opposite sides of the frame body 1231 along the third axis Z. The frame body 1231 is rotationally connected with the reflective base 1211 through the first support 122 to support the frame 123, and the frame 123 is rotationally movable relative to the reflective base 121 around the first axis Y; the first carrier side 1252 of the carrier 125 is rotationally connected with the first frame side 1232 through the second support 124, and the second carrier side 1253 of the carrier 125 is rotationally connected with the second frame side 1233 of the frame 123 through the second support 124 to support the carrier 125 on the frame 123 and enable the carrier 125 to rotate relative to the frame 123 around the third axis Z.

[0124] In some embodiments, the first support 122 comprises a rotation shaft support 1221 fixedly arranged on one of the reflective base 1211 of the reflective base 121 and the frame body 1231 of the frame 123 by insert molding or one-piece molding, and the other one of the reflective base 1211 and the frame body 1231 is provided with a rotation shaft positioning groove matched with the rotation shaft support 1221, the rotation shaft support 1221 and the rotation shaft positioning groove are arranged along the first axis Y, or in other words, the first axis Y passes through the rotation shaft support 1221 and the rotation shaft positioning groove, so that the frame 123 can only rotate relative to the reflective base 121 around the first axis Y. Further, the first support 122 further comprises an auxiliary ball 1222 arranged between an auxiliary upper groove 1235 of the frame body 1231 and an auxiliary lower groove 1216 of the reflective base 1211, which is used to reduce the frictional resistance during rotation of the frame 123, and cooperates with the rotation shaft support 1221 to provide a support plane for the frame 123 to stably support the frame 123.

[0125] In some embodiments, the second support 124 comprises two rotation shaft balls 1241, the frame 123 is provided with two rotation shaft lower grooves, respectively denoted as a first rotation shaft lower groove 12321 and a second rotation shaft lower groove 12331, and the carrier 125 is provided with two rotation shaft upper grooves, respectively denoted as a first rotation shaft upper groove 12522 and a second rotation shaft upper groove 12532, the two rotation shaft lower grooves are arranged at two opposite sides of the frame 123 along a direction parallel to the third axis Z, and the two rotation shaft upper grooves are arranged opposite to the two rotation shaft lower grooves respectively, the second support 124 comprises the two rotation shaft balls 1241 arranged between each rotation shaft lower groove and the corresponding rotation shaft upper groove, the third axis Z passes through the two rotation shaft balls 1241, and the rotation shaft balls 1241 cooperate with the rotation shaft upper grooves and the rotation shaft lower grooves to guide the carrier 125 to rotate relative to the frame 123 around the third axis Z.

[0126] In some embodiments, the assembly steps of the reflection module 10 are as follows: placing the auxiliary ball 1222 on the auxiliary lower groove 1216 after applying lubricating grease on the auxiliary ball 1222, aligning the auxiliary upper groove 1235 with the auxiliary ball 1222 to support the frame 123 on the reflection base 121; placing the rotating shaft ball 1241 on the rotating shaft lower groove after applying lubricating grease on the rotating shaft ball 1241, aligning the rotating shaft upper groove with the rotating shaft ball 1241 to support the carrier 125 on the frame 123. Further, according to whether the reflection cover 129 and the lens cover 228 are separate or integrated, the reflection cover 129 can be connected with the reflection base 121 in the last step of assembling the reflection module 10 or the last step of assembling the entire camera module, further fixing the carrier 125. The lubricating grease can be an industrial lubricating grease, such as G501 lubricating grease. Applying the lubricating grease can effectively reduce the friction between the ball and the rotating shaft upper groove, the rotating shaft lower groove, the auxiliary upper groove 1234, and the auxiliary lower groove 1216.

[0127] In some embodiments, the reflection driving assembly 12 further includes a reflection magnetic attraction part 127, which includes a first reflection magnetic part 1271 arranged on the carrier 125 and a second reflection magnetic part 1272 arranged on the reflection base 121. The two are magnetically attracted to each other, so that the carrier 125 can be magnetically attracted to the reflection base 121 through the support structure, or in other words, the carrier 125 and the reflection base 121 clamp the support structure therebetween. The first reflection magnetic part 1271 and the second reflection magnetic part 1272 are preferably arranged on the reflection base 1211 and the carrier base 12511, and one of them is a magnet, and the other is a magnetic conductive material suitable for being attracted by the magnet, such as a magnet or a magnetic yoke suitable for being attracted by the magnet. In a specific embodiment, the first reflection magnetic part 1271 includes a magnetic magnet 12711.

[0128] In some embodiments, the frame 123 and / or the reflection base 121 is provided with an auxiliary ball support metal part 1236, which is embedded in the frame 123 or the reflection base 121 by insert molding process and exposed as the bottom of the auxiliary upper groove 1235 or the auxiliary lower groove 1216, so as to enhance the structure while making the auxiliary groove have a harder groove bottom to reliably support the ball.

[0129] In some embodiments, as shown in FIG. 5, the auxiliary ball support metal part 1236 can be fixedly connected with the reflection magnetic attraction part 127 to jointly increase the structural strength. Further, the auxiliary ball support metal part 1236 can be fixedly connected with the first reflection magnetic part 1271 or the second reflection magnetic part 1272 first, and then embedded in the frame 123 or the reflection base 121 by the insert molding process, which is beneficial to reduce the number of material belt connections, simplify the process flow, and save the space reserved inside the mold for the material belt.

[0130] In some embodiments, the reflection driving part 126 comprises a first rotation magnet 1261 and a first rotation coil 1262 adapted to drive the carrier 125 to rotate around the first axis Y, and a second rotation magnet 1263 and a second rotation coil 1264 adapted to drive the carrier 125 to rotate around the third axis Z, the rotation magnet and the corresponding rotation coil being oppositely arranged along the second axis X. The carrier 125 is allowed to rotate around the first axis Y and the third axis Z relative to the reflection base 121, so as to realize an anti-shake (OIS) function. Specifically, the rotation coils are centrally arranged on the second reflection base side 1213 of the reflection base 121, and the rotation magnets are centrally arranged on the third carrier side 12512 of the carrier 125. The rotation coils are arranged on the reflection base 121 to facilitate electrical connection. Specifically, the rotation coils can be electrically connected to the rear lens module 20 and the imaging module 30 through a circuit board mounted on the reflection base 121, or a conductive insert embedded in the reflection base 121.

[0131] In some embodiments, the carrier 125 is provided with a carrier buffer 1257 made of a flexible material, such as silica gel. The carrier buffer 1257 can be arranged on the carrier 125 by means of gluing, overmolding, or the like, and protrudes relative to the carrier 125 in at least one direction, so as to realize buffering during rotation of the carrier 125, and avoid collision and damage between the carrier 125 and the reflection base 121 or the reflection cover 129 or the frame 123.

[0132] In some embodiments, the carrier buffer 1257 is arranged on the first carrier side 1252 and the second carrier side 1253. The carrier buffer 1257 protrudes upward along a direction parallel to the first axis Y, so as to realize buffering between the carrier 125 and the reflection cover 129. In some embodiments, the carrier buffer 1257 protrudes downward along a direction parallel to the first axis Y, and / or protrudes along a direction parallel to the second axis X, so as to realize buffering between the carrier 125 and the reflection base 121.

[0133] In some embodiments, the reflection driving part 126 can also be arranged on other sides of the carrier 125. For example, the first rotation magnet 1261 and the first rotation coil 1262 can be arranged on a side of the carrier 125 parallel to the third axis Z, and the second rotation magnet 1263 and the second rotation coil 1264 can be arranged on a side of the carrier 125 parallel to the first axis Y, for example, on the side where the carrier base 12511 is located.

[0134] In some embodiments, the first sensing magnet 1283 and the second rotation magnet 1263 are oppositely arranged along a direction perpendicular to the third axis Z. In combination with the above description of the structure of the reflection driving part 126. In some embodiments, the second rotation magnet 1263 and the second rotation coil 1264 are arranged on the side of the carrier substrate 12511. Specifically, the second rotation magnet 1263 can be arranged on the carrier substrate 12511, and the second rotation coil 1264 can be arranged on the reflection substrate 1211. The first sensing magnet 1283 and the second rotation magnet 1263 are oppositely arranged along a direction parallel to the second axis X, and the first rotation sensing element 1281 is oppositely arranged with the first sensing magnet 1283 and the second rotation magnet 1263 along a direction parallel to the first axis Y.

[0135] In another embodiment, the second rotation magnet 1263 is arranged on the third carrier side 12512 of the carrier 125, and the second rotation coil 1264 is arranged on the second reflection base side 1213 of the reflection base 121. The second rotation magnet 1263 and the second rotation coil 1264 are oppositely arranged along a direction parallel to the second axis X, the first sensing magnet 1283 and the second rotation magnet 1263 are oppositely arranged along a direction parallel to the first axis Y, and the first rotation sensing element 1281 is oppositely arranged with the first sensing magnet 1283 and the second rotation magnet 1263 along a direction parallel to the second axis X.

[0136] In some embodiments, the first rotation sensing element 1281 is adapted to simultaneously sense the magnetic field of the first sensing magnet 1283 and the second rotation magnet 1263 to determine the rotation angle of the carrier 125 around the third axis Z, and to perform closed-loop control on the rotation of the carrier 125 around the third axis Z. It can be understood that if the first sensing magnet 1283 is used alone, it needs to have a large enough magnetized area to provide sufficient magnetic field strength, so that the second rotation magnet 1263 and the first sensing magnet 1283 together generate a magnetic field that provides the first rotation sensing element 1281 with work. The size of the first sensing magnet 1283 in the direction parallel to the relative arrangement direction of the first sensing magnet 1283 and the second rotation magnet 1263 does not have to be designed to be large.

[0137] In some embodiments, the driving current of the second rotation coil 1264 is not constant when the second rotation coil 1264 is working in order to meet different driving requirements, and the magnetic field generated by the second rotation coil 1264 will change in real time. When the first rotation sensing element 1281 is arranged in the second rotation coil 1264, especially in the middle of the second rotation coil 1264, the changing magnetic field of the second rotation coil 1264 will interfere with the detection of the first rotation sensing element 1281. The second rotation coil 1264 and the first rotation sensing element 1281 are arranged on the second reflection base side 1213 at the same time, and the first rotation sensing element 1281 is arranged outside the second rotation coil 1264, so as to reduce the magnetic interference of the second rotation coil 1264 on the first rotation sensing element 1281 and improve the accuracy of position detection.

[0138] In some embodiments, the first rotation coil 1262 is also arranged on the second reflection base side 1213, and the first rotation coil 1262 and the second rotation coil 1264 are located on the same side of the reflection driving assembly 12 in the direction perpendicular to the third axis Z, so as to reduce the magnetic interference of the rotation coil and the rotation magnet on the other side of the carrier 125. The first rotation sensing element 1281 is arranged outside the first rotation coil 1262, so as to reduce the magnetic interference of the first rotation coil 1262 on the first rotation sensing element 1281 and improve the accuracy of position detection. Correspondingly, the first rotation magnet 1261 and the second rotation magnet 1263 are arranged on the third carrier side 12512. Further, the second rotation magnet 1263 is arranged as a single one, and the first rotation magnet 1261 can be arranged as two and arranged on two opposite sides of the second rotation magnet 1263 in the direction parallel to the third axis Z. The first rotation magnet 1261 and the first rotation coil 1262 are arranged as two pairs, so as to provide larger driving force for the frame 123 and the carrier 125 thereon, and make the frame 123 and the carrier 125 thereon rotate smoothly around the first axis Y.

[0139] In some embodiments, in order to reduce the interference of the carrier 125 rotating around the first axis Y on the first rotation sensing element 1281, the projection of the first rotation sensing element 1281 and the first sensing magnet 1283 in the direction parallel to the second axis X overlaps the first axis Y. More specifically, the length direction of the first rotation sensing element 1281 can be arranged perpendicular to the first axis Y, for example, can be arranged parallel to the third axis Z.

[0140] In some embodiments, the projection of the second rotation magnet 1263 and the projection of the second rotation coil 1264 both overlap with the first axis Y in the direction parallel to the second axis X, the first rotation sensing element 1281 is disposed on one side of the second rotation coil 1264 in the direction parallel to the first axis Y, and the first sensing magnet 1283 is disposed on one side of the second rotation magnet 1263 in the direction parallel to the first axis Y. Specifically, the first sensing magnet 1283 is disposed above or below the second rotation magnet 1263 in the direction parallel to the first axis Y, and correspondingly, the first rotation sensing element 1281 is disposed above or below the second rotation coil 1264 in the direction parallel to the first axis Y. Thus, the projections of the second rotation magnet 1263, the second rotation coil 1264, the first rotation sensing element 1281, and the first sensing magnet 1283 all overlap with the first axis Y in the direction parallel to the second axis X. This layout is compact and reasonable, and it not only reduces the magnetic interference of the magnets on the other sides of the carrier 125 except for the third carrier side 12512, but also reduces the interference of the rotation of the carrier 125 around the first axis Y on the angle of the rotation of the carrier 125 around the third axis Z.

[0141] In some embodiments, the first rotation sensing element 1281 is disposed above the second rotation coil 1264 in the direction parallel to the first axis Y, and correspondingly, the first sensing magnet 1283 is disposed above the second rotation magnet 1263 in the direction parallel to the first axis Y. When the carrier 125 rotates around the third axis Z, the adjacently disposed first sensing magnet 1283 and the second rotation magnet 1263 jointly provide a sensing magnetic field for the first rotation sensing element 1281, and the first rotation sensing element 1281 detects the magnetic field information of the first sensing magnet 1283 and the second rotation magnet 1263 to calculate the angle of the rotation of the carrier 125 around the third axis Z.

[0142] In some embodiments, the first rotation sensing element 1281 is disposed above the second rotation coil 1264 in the direction parallel to the first axis Y. The second rotation coil 1264 and the second rotation magnet 1263 are disposed on the side relatively close to the frame 123 in the direction parallel to the first axis Y, i.e., on the side relatively close to the reflective base 1211, so as to reserve a space above the second rotation coil 1264 and above the second rotation magnet 1263 for installing the first rotation sensing element 1281 and the first sensing magnet 1283. When the first rotation magnet 1261 and the second rotation magnet 1263 are disposed on the same side of the carrier 125, i.e., on the third carrier side 12512, the distance between the second rotation magnet 1263 and the reflective base 1211 is smaller than the distance between the first rotation magnet 1261 and the reflective base 1211.

[0143] It can be understood that, in order to ensure that the first sensing magnet 1283 and the second rotation magnet 1263 can generate magnetic fields of sufficient strength at the first rotation sensing element 1281, the projection of the first rotation sensing element 1281 along the perpendicular direction of the side of the first rotation sensing element 1281 facing the second rotation magnet 1263 overlaps with the first sensing magnet 1283 and the second rotation magnet 1263. The first sensing magnet 1283 and the second rotation magnet 1263 need to be arranged adjacently. In addition, the adjacently arranged includes the spaced arrangement and the contact arrangement without spacing, and the spaced arrangement of the first sensing magnet 1283 and the second rotation magnet 1263 is more conducive to the inclined installation of the first sensing magnet 1283. Specifically, when the first sensing magnet 1283 and the second rotation magnet 1263 are arranged adjacently along the direction parallel to the first axis Y, the first rotation sensing element 1281 is arranged relative to the first sensing magnet 1283, the second rotation magnet 1263 and the spacing region between the two magnets along the direction parallel to the second axis X. At this time, the perpendicular direction of the side of the first rotation sensing element 1281 facing the second rotation magnet 1263 corresponds to the direction parallel to the second axis X. That is, the projection of the first rotation sensing element 1281 along the direction parallel to the second axis X overlaps with the first sensing magnet 1283 and the second rotation magnet 1263. When the first sensing magnet 1283 and the second rotation magnet 1263 are arranged adjacently along the direction parallel to the second axis X, the perpendicular direction of the side of the first rotation sensing element 1281 facing the second rotation magnet 1263 corresponds to the direction parallel to the first axis Y at this time, and the projection of the first rotation sensing element 1281 along the direction parallel to the first axis Y overlaps with the first sensing magnet 1283 and the second rotation magnet 1263.

[0144] In some embodiments, in order to enable the first sensing magnet 1283 and the second rotation magnet 1263 to be arranged adjacently in the direction perpendicular to the third axis Z, the magnetic poles of the sides of the first sensing magnet 1283 and the second rotation magnet 1263 facing each other are opposite, avoiding the magnetic repulsion between the two magnets affecting the accurate installation of the magnets. More specifically, the magnetic poles of the regions of the two magnets facing the first rotation sensing element 1281 and adjacent to each other are opposite. If the magnetic poles of the regions of the first sensing magnet 1283 and the second rotation magnet 1263 adjacent to each other are the same, the magnetic repulsion between the first sensing magnet 1283 and the second rotation magnet 1263 makes it difficult for the two to be installed closer, and the sensing linearity of the first rotation sensing element 1281 is also poor.

[0145] Additionally, magnetization of a magnet refers to the re-alignment of magnetic domains inside the magnet by applying an external magnetic field to the magnet, so that the magnetic moments of the magnetic domains tend to be aligned. The magnetization direction is the direction of the internal magnetic domains when the magnet is magnetized, i.e., the direction of the N (North) pole and the S (South) pole of the magnet. In some embodiments, the first sensing magnet 1283 is a single-pole magnet, and the second rotating magnet 1263 is a multi-pole magnet, specifically a double-pole magnet. The magnetization direction of the first sensing magnet 1283 is not perpendicular to the magnetization direction of the second rotating magnet 1263.

[0146] In some embodiments, referring to FIG. 5, in order to avoid the first sensing magnet 1283 and the second rotating magnet 1263 from being displaced close to each other or from changing the unnecessary magnet posture due to the magnetic attraction between them, a spacing plate 1259 is arranged between the first sensing magnet 1283 and the second rotating magnet 1263 to keep the first sensing magnet 1283 and the second rotating magnet 1263 apart. Specifically, when the first sensing magnet 1283 and the second rotating magnet 1263 are arranged on the third carrier side portion 12512 opposite to each other along the direction parallel to the first axis Y, the spacing plate 1259 can be arranged protruding from the carrier 125 along the direction parallel to the second axis X towards the first rotating sensing element 1281.

[0147] In some embodiments, the side of the first sensing magnet 1283 facing the first rotating sensing element 1281 is coplanar or parallel to the side of the second rotating magnet 1263 facing the first rotating sensing element 1281. Specifically, the side of the first sensing magnet 1283 facing the first rotating sensing element 1281 and the side of the second rotating magnet 1263 facing the first rotating sensing element 1281 both extend along the direction parallel to the first axis Y.

[0148] In some embodiments, referring to FIG. 5 and FIG. 6, the first sensing magnet 1283 is tilted away from the side of the second rotation magnet 1263 towards the first rotation sensing element 1281. In other words, the side of the first sensing magnet 1283 facing the first rotation sensing element 1281 and away from the second rotation magnet 1263 is tilted relative to the side of the second rotation magnet 1263 facing the first rotation sensing element 1281. Given that the carrier 125 and the first sensing magnet 1283 thereon need to rotate around the third axis Z, tilting the first sensing magnet 1283 relative to the second rotation magnet 1263 facilitates better symmetry of the sensing result of the first rotation sensing element 1281 during rotation of the carrier 125, so as to calibrate the first rotation sensing element 1281. It is noted that the first sensing magnet 1283 tilted away from the second rotation magnet 1263 towards the first rotation sensing element 1281 can achieve similar effect as the first sensing magnet 1283 tilted away from the second rotation magnet 1263 away from the first rotation sensing element 1281 by the same angle.

[0149] Further, given that the first sensing magnet 1283 is tilted, the magnetic field provided to the first rotation sensing element 1281 is relatively weaker than if the first sensing magnet 1283 is not tilted. In some embodiments, to balance the magnetic field strength of the first sensing magnet 1283 and the second rotation magnet 1263 at the first rotation sensing element 1281, the position of the first rotation sensing element 1281 is adjusted towards the first sensing magnet 1283. Specifically, along the direction in which the first sensing magnet 1283 and the second rotation magnet 1263 are arranged relative to each other, e.g. the direction parallel to the first axis Y, the first sensing magnet 1283 is closer to the first rotation sensing element 1281 than the second rotation magnet 1263. In other words, in some embodiments, the first rotation sensing element 1281 is projected along the direction parallel to the second axis X, and the distance between the center of the projection and the first sensing magnet 1283 is smaller than the distance between the center of the projection and the second rotation magnet 1263. This simultaneously means that the first rotation sensing element 1281 is arranged further away from the second rotation coil 1264 along the direction parallel to the first axis Y, which facilitates reducing the magnetic interference of the second rotation coil 1264 on the first rotation sensing element 1281.

[0150] It is to be noted that the detection of the first rotation sensing element 1281 relies on the magnetic field in the direction of the normal line of the side of the first rotation sensing element 1281 facing the first sensing magnet 1283 and the second rotation magnet 1263, and the magnetic field in other directions will interfere with the first rotation sensing element 1281. In order to ensure the accuracy of the detection result of the first rotation sensing element 1281, the magnetic difference of the first rotation sensing element 1281 in the required direction reaches at least 18 mT / deg during the rotation of the carrier 125 around the third axis Z.

[0151] In some embodiments, the normal line direction of the side of the first rotation sensing element 1281 facing the second rotation magnet 1263 is in the direction parallel to the second axis X. In order to more clearly describe the direction of the magnetic field, a direction parallel to the second axis X is defined as Bx, a direction parallel to the first axis Y is defined as By, and a direction parallel to the third axis Z is defined as Bz. Within the rated travel range of the carrier 125, the magnetic difference of the first rotation sensing element 1281 in the Bx direction reaches at least 18 mT / deg.

[0152] In order to design the inclination angle a of the first sensing magnet 1283, the application provides the magnetic difference in the Bx direction measured by the first sensing magnet 1283 at multiple inclination angles, which is shown in Table 1.

[0153] Table 1. Magnetic field of the first sensing magnet at different inclination angles

[0154] In the column of "inclination angle", the mechanical angle a of the side of the first sensing magnet 1283 away from the second rotation magnet 1263 is inclined towards the first rotation sensing element 1281; in the column of "rotation angle", the mechanical angle of the rotation of the carrier 125 around the third axis Z is shown; in the columns of "Bx (mT)", "By (mT)", and "Bz (mT)", the magnetic field strengths in the directions of Bx, By, and Bz are shown in units of mT; in the column of "Bx magnetic difference (mT / deg)", the magnetic difference in the Bx direction is shown. The calculation formula of the magnetic difference is: [Bx(0.65°)-Bx(-0.65°)] / 1.3 / 2. It can be understood that when the carrier 125 rotates around the third axis Z, the rotation angle of the carrier 125 is equivalent to the rotation angle of the light reflecting surface 18, and when the rotation angle of the light reflecting surface 18 around the third axis changes from 0 to β, the reflection angle of the incident light increases by 2*β, so when calculating the magnetic difference, it needs to be divided by 2 to realize the conversion of the mechanical angle to the optical angle.

[0155] From the statistical results in Table 1, it can be seen that the inclination angle a of the first sensing magnet 1283 is not greater than 45°. Specifically, it can be 10°, 20°, 30°, or 45°.

[0156] Additionally, when the tilt angle a of the first sensing magnet 1283 changes, the position of the first rotation sensing element 1281 can be adjusted in order to balance the magnetic field strength of the first sensing magnet 1283 and the second rotation magnet 1263 at the first rotation sensing element 1281. That is, when the magnetic difference of the first sensing magnet 1283 in the Bx direction at different tilt angles a is calculated, the position of the first rotation sensing element 1281 is not fixed.

[0157] In some embodiments, the first sensing magnet 1283 has a length in the direction parallel to the third axis Z, and the length of the first sensing magnet 1283 is not less than 0.4 mm. In other words, the length of the first sensing magnet 1283 is not less than 0.4 mm. This is because the smaller the length of the first sensing magnet 1283, the smaller the magnetic field strength of the first sensing magnet 1283 in the direction parallel to the third axis Z. Therefore, the length of the first sensing magnet 1283 is set to be greater than or equal to 0.4 mm to ensure that the magnetic field in the direction parallel to the third axis Z is sufficient to support the normal operation of the first rotation sensing element 1281.

[0158] In some embodiments, the first sensing magnet 1283 has a length in the direction parallel to the third axis Z, and the length of the first sensing magnet 1283 is not less than 0.4 mm. In other words, the length of the first sensing magnet 1283 is not less than 0.4 mm. This is because the smaller the length of the first sensing magnet 1283, the smaller the magnetic field strength of the first sensing magnet 1283 in the direction parallel to the third axis Z. Therefore, the length of the first sensing magnet 1283 is set to be greater than or equal to 0.4 mm to ensure that the magnetic field in the direction parallel to the third axis Z is sufficient to support the normal operation of the first rotation sensing element 1281.

[0159] In some embodiments, the first sensing magnet 1283 has a length in the direction parallel to the third axis Z, and the length of the first sensing magnet 1283 is not less than 0.4 mm. In other words, the length of the first sensing magnet 1283 is not less than 0.4 mm. This is because the smaller the length of the first sensing magnet 1283, the smaller the magnetic field strength of the first sensing magnet 1283 in the direction parallel to the third axis Z. Therefore, the length of the first sensing magnet 1283 is set to be greater than or equal to 0.4 mm to ensure that the magnetic field in the direction parallel to the third axis Z is sufficient to support the normal operation of the first rotation sensing element 1281.

[0160] In some embodiments, in combination with FIG. 4, the first sensing magnet 1283 and the second rotation magnet 1263 are mounted on the carrier 125, and a reflective magnetic sheet 1265 is arranged on the carrier 125, the reflective magnetic sheet 1265 avoids the first sensing magnet 1283 and is arranged opposite to the second rotation magnet 1263. Specifically, the reflective magnetic sheet 1265 is provided with a gap 12651 in the region corresponding to the first sensing magnet 1283 arranged at an angle. The reflective magnetic sheet 1265 can constrain the magnetic field of the second rotation magnet 1263 and enhance the magnetic field strength on the side of the second rotation magnet 1263 facing the second rotation coil 1264. Assuming that the reflective magnetic sheet 1265 is arranged opposite to the first sensing magnet 1283, the local area of the reflective magnetic sheet 1265 needs to be arranged at the same angle as the first sensing magnet 1283, which has the problem of inconvenient processing. In more detail, the reflective magnetic sheet 1265 is generally embedded in the carrier 125, and when the carrier 125 is injection molded, a thimble can be inserted from the top of the carrier 125 in a direction parallel to the first axis Y to control the bending angle of the local area of the reflective magnetic sheet 1265, and the thimble is pulled out after the carrier 125 is basically formed, thereby realizing the local inclined arrangement of the reflective magnetic sheet 1265, but the thimble hole left on the carrier 125 will cause the local area of the reflective magnetic sheet 1265 to be exposed, thereby causing the camera module to produce stray light.

[0161] In some embodiments, in combination with FIG. 3A and FIG. 3B, the second sensing magnet 1284 is arranged on one side of the carrier 125 along the direction parallel to the third axis Z, and the second rotation sensing element 1282 is arranged on one side of the reflective base 121 along the direction parallel to the third axis Z opposite to the second sensing magnet 1284. In other words, the second rotation sensing element 1282 and the second sensing magnet 1284 are arranged opposite to each other along the direction parallel to the third axis Z, and the second sensing magnet 1284 can be arranged in the second sensing magnet slot 1258B on the first carrier side 1252 or the second carrier side 1253, and correspondingly, the second rotation sensing element 1282 can be arranged on the first reflective base side 1212 or the third reflective base side 1214. This combination of the second sensing magnet 1284 and the second rotation sensing element 1282 is arranged on different sides of the reflective module 10 from the combination of the rotation magnet and the rotation coil, which is beneficial to reduce the magnetic interference between them, so that each part can be reasonably laid out in the space between the carrier 125 and the reflective base 121, and the structure is compact. Among them, the second rotation sensing element 1282 is arranged on the reflective base 121 to facilitate electrical connection.

[0162] In some embodiments, as shown in FIG. 7, the second rotation sensing element 1282 is oppositely arranged with the third axis Z in a direction parallel to the second axis Y. In other words, when the first axis Y direction is the height direction of the reflection module 10, the second rotation sensing element 1282 is arranged at the same height as the third axis Z to reduce the magnetic field interference encountered by the second rotation sensing element 1282.

[0163] In some embodiments, similar to the power supply method of the rotation coil, the first rotation sensing element 1281 and the second rotation sensing element 1282 can be electrically connected to the rear lens module 20 and the imaging module 30 through a circuit board mounted on the reflection base 121 or a conductive insert embedded in the reflection base 121. The rotation sensing element can be a magnetoresistive sensor, a Hall element, or a driving chip with a magnetoresistive sensor and / or a Hall element.

[0164] In some embodiments, the carrier 125 is provided with the first sensing magnet 1283, the second sensing magnet 1284, the two first rotation magnets 1261, the second rotation magnet 1263, and the two magnetic attraction magnets 12711.

[0165] The application further provides a magnet assembly method of a reflection driving assembly, which comprises the following steps: A, providing a carrier 125, a second rotation magnet 1263 adapted to drive the carrier 125 to rotate around a third axis Z, and a first sensing magnet 1283 adapted to detect the rotation angle of the carrier 125 around the third axis Z; B, mounting the first sensing magnet 1283 on one side of the carrier 125; C, mounting the second rotation magnet 1263 on the carrier 125, so that the second rotation magnet 1263 is oppositely arranged with the first sensing magnet 1283 in a direction perpendicular to the third axis Z. In a specific embodiment, the second rotation magnet 1263 is oppositely arranged with the first sensing magnet 1283 in a direction parallel to the first axis Y. Since the first sensing magnet 1283 is smaller in volume than other magnets and needs to be tilted in some embodiments, if the rotation magnet is mounted first and then the first sensing magnet 1283 is mounted, the position and tilt angle of the first sensing magnet 1283 are easily affected by other magnets, especially the second rotation magnet 1263 arranged adjacent to it, and the installation is difficult. Mounting the first sensing magnet 1283 first and then mounting the rotation magnet can reduce the assembly difficulty and facilitate the accurate installation of the first sensing magnet 1283.

[0166] In some embodiments, the installation of the first sensing magnet 1283 in step B is achieved by setting adhesive on the side of the carrier 125 and / or the first sensing magnet 1283. Specifically, step B can include: B1, recessing one side of the carrier 125 inward to form a first sensing magnet slot 1258A, and setting adhesive on the first sensing magnet slot 1258A and / or the first sensing magnet 1283; B2, inserting the first sensing magnet 1283 into the first sensing magnet slot 1258A along a direction parallel to the second axis X. The insertion stroke of the first sensing magnet 1283 into the first sensing magnet slot 1258A along this direction is short, and the first sensing magnet 1283 can be accommodated and protected by the first sensing magnet slot 1258A. The adhesive in this application can be UV thermosetting adhesive, and step B further includes step B3: UV irradiation to cure the UV thermosetting adhesive set in step B1, so that the first sensing magnet 1283 is pre-fixed in the first sensing magnet slot 1258A. It is worth mentioning that the UV thermosetting adhesive is a kind of glue that can be cured by UV light (ultraviolet light) irradiation or baking.

[0167] In some embodiments, the first sensing magnet slot 1258A has a first inclined limiting surface 12581 and a second inclined limiting surface 12582, the first inclined limiting surface 12581 is arranged on the side away from the second rotating magnet 1263, and the second inclined limiting surface 12582 is arranged on the side away from the first rotating sensing element 1281. The first inclined limiting surface 12581 and the second inclined limiting surface 12582 can be arranged perpendicular to each other, and are respectively adapted to abut two adjacent sides of the first sensing magnet 1283, so that the first sensing magnet 1283 is installed in the first sensing magnet slot 1258A in an inclined manner. The two inclined limiting surfaces can determine the inclination angle of the first sensing magnet 1283, thereby reducing the assembly difficulty.

[0168] In some embodiments, in step B1, the adhesive can be preset on the side of the first sensing magnet 1283 facing away from the second rotating magnet 1263 and the side adjacent to the side and facing away from the first rotating sensing element 1281, the first sensing magnet 1283 can be positioned in the direction perpendicular to the third axis Z by means of the first inclined mounting surface 12581 and the second inclined mounting surface 12582, and the posture of being inclined or laid flat is maintained. Further, the first sensing magnet 1283 can also be positioned in the direction parallel to the third axis Z by means of the two oppositely arranged side walls of the first sensing magnet slot 1258A. In other embodiments, the adhesive can also be preset on the first inclined mounting surface 12581, the second inclined mounting surface 12582, the two oppositely arranged side walls of the first sensing magnet slot 1258A in the direction parallel to the third axis Z, and the two oppositely arranged sides of the first sensing magnet 1283 in the direction parallel to the third axis Z. It is worth mentioning that the first sensing magnet 1283 is inserted into the first sensing magnet slot 1258A in the direction parallel to the second axis X.

[0169] In some embodiments, step B further comprises step B4 performed after step B3: presetting adhesive between the first sensing magnet 1283 and the spacer plate 1259 and curing the adhesive. This facilitates increasing the connection strength of the first sensing magnet 1283.

[0170] In some embodiments, one side of the carrier 125 is inwardly recessed to form the first sensing magnet slot 1258A and the rotating magnet slot 1255, and two first rotating magnets 1261 and one second rotating magnet 1263 are fixedly arranged in the rotating magnet slot 1255.

[0171] In some embodiments, between step B and step C, step D is further included: providing two first rotating magnets 1261 adapted to drive the carrier 125 to rotate around the first axis Y, spacing the two first rotating magnets 1261 on the carrier 125, and arranging the two first rotating magnets 1261 on the same side of the carrier 125 as the first sensing magnet 1283, so that when the second rotating magnet 1263 is arranged on the carrier 125 in step C, the second rotating magnet 1263 can be arranged between the two first rotating magnets 1261. Specifically, the positioning and mounting of the two first rotating magnets 1261 can be realized by means of the rotating magnet slot 1255, and the positioning and mounting of the second rotating magnet 1263 can be realized by means of the two first rotating magnets 1261 on both sides, which facilitates the accurate mounting of each magnet.

[0172] In some embodiments, step D can specifically include: D1, the carrier 125 is inwardly recessed on one side provided with the first sensing magnet slot 1258A to form a rotating magnet slot 1255 provided adjacent to the first sensing magnet slot 1258A, and two first rotating magnets 1261 adapted to drive the carrier 125 to rotate around the first axis Y are provided; D2, an adhesive is provided on the rotating magnet slot 1255 and / or the first rotating magnet 1261; D3, the first rotating magnet 1261 is inserted into the rotating magnet slot 1255 from the side of the rotating magnet slot 1255 away from the first sensing magnet slot 1258A along a direction parallel to the first axis Y; and D4, the adhesive provided in step D2 is cured.

[0173] In addition, since the first rotating magnet 1261 is provided with two, the two first rotating magnets 1261 can be installed in batches. Specifically, one round of steps D2 to D4 can be performed to pre-fix one of the first rotating magnets 1261 in the rotating magnet slot 1255, and then a second round of steps D2 to D4 can be performed to pre-fix the other first rotating magnet 1261 in the rotating magnet slot 1255, so that the two first rotating magnets 1261 are installed at intervals on the carrier 125. Alternatively, the installation of the two first rotating magnets 1261 can be completed at one time. Specifically, when step D2 is performed, the adhesive is provided in the installation area of the two first rotating magnets 1261 respectively, when step D3 is performed, the two first rotating magnets 1261 are inserted into the rotating magnet slot 1255 synchronously or in sequence, and when step D4 is performed, the adhesives at the two first rotating magnets 1261 are cured.

[0174] Further, considering that the magnetic poles of the two first rotating magnets 1261 adjacent to each other are the same, there is a magnetic repulsion force between the two first rotating magnets 1261, and if the two first rotating magnets 1261 are inserted into the rotating magnet slot 1255 synchronously, a clamp is needed to maintain the distance between the two first rotating magnets 1261, and a space for the clamp to move needs to be reserved on the carrier 125. When the size of the carrier 125 on the side of the rotating magnet slot 1255 remains unchanged, providing a moving space for the clamp will occupy the installation space of the first rotating magnet 1261, resulting in the size of the first rotating magnet 1261 needing to be reduced, which affects the driving effect of the first rotating magnet 1261. The way of inserting the two first rotating magnets 1261 into the rotating magnet slot 1255 in sequence along a direction parallel to the first axis Y can rely on the slot wall of the rotating magnet slot 1255 to provide support force for the first rotating magnet 1261 to overcome the magnetic repulsion force, without the need to additionally reserve space to set the clamp.

[0175] In addition, the adhesive can be applied in step D2 at two mounting areas spaced apart along the direction parallel to the third axis Z at the bottom of the rotating magnet slot 1255, and in order to avoid the adhesive in this step from overflowing and affecting the mounting of the second rotating magnet 1263 in step C, the adhesive should be applied at a position away from the mounting area of the second rotating magnet 1263 at the bottom of the rotating magnet slot 1255 in step D2. In other embodiments, the adhesive can also be applied in step D2 at two opposite sides of the rotating magnet slot 1255 along the direction parallel to the third axis Z, at the side of the rotating magnet slot 1255 close to the first sensing magnet slot 1258A, at the side of the two first rotating magnets 1261 away from each other, at the side of the two first rotating magnets 1261 opposite to the bottom of the rotating magnet slot 1255, and at the side of the two first rotating magnets 1261 close to the first sensing magnet slot 1258A along the direction parallel to the first axis Y.

[0176] In some embodiments, step C specifically includes: C1, applying adhesive on the rotating magnet slot 1255 and / or the second rotating magnet 1263; C2, inserting the second rotating magnet 1263 into the rotating magnet slot 1255 from the side of the rotating magnet slot 1255 away from the first sensing magnet slot 1258A along the direction parallel to the first axis Y; C3, curing the adhesive applied in step C1 so that the second rotating magnet 1263 is pre-fixed on the carrier 125 and arranged opposite to the first sensing magnet 1283 along the direction perpendicular to the third axis Z.

[0177] In some embodiments, in steps C1 and D2, the reflective magnetic sheet 1265 can be partially exposed to the rotating magnet slot 1255, or in other words, the reflective magnetic sheet 1265 can constitute at least a partial bottom of the rotating magnet slot 1255, so that the adhesive can be applied on the reflective magnetic sheet 1265, and the adhesive can be more tightly bonded with the reflective magnetic sheet 1265 made of metal material. This is beneficial to increase the strength of the bonding structure.

[0178] In some embodiments, the magnetic pole of the second rotating magnet 1263 on the side facing the first sensing magnet 1283 is opposite to the magnetic pole of the first sensing magnet 1283 on the side facing the second rotating magnet 1263, so that the two magnets are easily arranged adjacent to each other.

[0179] It is particularly pointed out that the side of the second rotation magnet 1263 facing the first sensing magnet 1283 can have a single magnetic pole, or two or more magnetic poles. For example, the side of the second rotation magnet 1263 facing the first sensing magnet 1283 and close to the first rotation sensing element 1281 is N-pole, and the side of the second rotation magnet 1263 facing the first sensing magnet 1283 and away from the first rotation sensing element 1281 is S-pole. Correspondingly, the side of the first sensing magnet 1283 facing the second rotation magnet 1263 and close to the first rotation sensing element 1281 is S-pole, and the side of the first sensing magnet 1283 facing the second rotation magnet 1263 and away from the first rotation sensing element 1281 is N-pole. Similarly, the first rotation magnet 1261 can be provided with a single or two or more magnetic poles along the direction parallel to the second axis.

[0180] In some embodiments, the magnetic pole of the second rotation magnet 1263 facing one side of the first sensing magnet 1283 is the same as the magnetic pole of the first rotation magnet 1261 facing one side of the second rotation magnet 1263, and the magnetic pole of the second rotation magnet 1263 facing away from one side of the first sensing magnet 1283 is opposite to the magnetic pole of the first rotation magnet 1261 facing one side of the second rotation magnet 1263. Assuming that the magnetic pole of the second rotation magnet 1263 facing away from one side of the first sensing magnet 1283 is the same as the magnetic pole of the first rotation magnet 1261 facing one side of the second rotation magnet 1263, and the magnetic pole of the second rotation magnet 1263 facing one side of the first sensing magnet 1283 is opposite to the magnetic pole of the first rotation magnet 1261 facing one side of the second rotation magnet 1263, when the step C2 is first performed, the magnetic force between the second rotation magnet 1263 facing one side of the first sensing magnet 1283 and the first rotation magnet 1261 adjacent to the two sides is magnetic attraction, but as the distance of the second rotation magnet 1263 inserted into the rotation magnet slot 1255 along the direction parallel to the first axis Y increases, the magnetic repulsion between the second rotation magnet 1263 facing away from one side of the first sensing magnet 1283 and the first rotation magnet 1261 adjacent to the two sides generates a magnetic repulsion force on the second rotation magnet 1263 moving away from the first sensing magnet 1283, causing the second rotation magnet 1263 to deviate from the preset position. And the magnetic pole of the second rotation magnet 1263 facing one side of the first sensing magnet 1283 is the same as the magnetic pole of the first rotation magnet 1261 facing one side of the second rotation magnet 1263, and the magnetic pole of the second rotation magnet 1263 facing away from one side of the first sensing magnet 1283 is opposite to the magnetic pole of the first rotation magnet 1261 facing one side of the second rotation magnet 1263. When the distance of the second rotation magnet 1263 inserted into the rotation magnet slot 1255 along the direction parallel to the first axis Y is small, it is subjected to magnetic repulsion, at which time the magnet assembly device can exert a support force on the second rotation magnet 1263 sufficient to overcome the magnetic repulsion, and when the second rotation magnet 1263 is inserted to the preset position in the rotation magnet slot 1255, the magnetic attraction between the second rotation magnet 1263 facing away from one side of the first sensing magnet 1283 and the first rotation magnet 1261 adjacent to the two sides causes the two first rotation magnets 1261 to maintain the second rotation magnet 1263 in the preset position after the magnet assembly device is removed. The influence is small.

[0181] It can be understood that in the above step C2 and step D3, the rotating magnet is inserted into the rotating magnet slot 1255 from the side of the rotating magnet slot 1255 away from the first sensing magnet slot 1258A in the direction parallel to the first axis Y. Such a mounting manner means that the magnet assembling device only needs to position the mounting position of the rotating magnet in the direction parallel to the third axis Z, and then push the rotating magnet into the rotating magnet slot 1255 in the direction parallel to the first axis Y, and push the rotating magnet to abut against the slot wall of the rotating magnet slot 1255 close to the first sensing magnet slot 1258A in the direction parallel to the first axis Y. And the position of the first rotating magnet 1261 in the direction parallel to the third axis Z can be determined by the two oppositely arranged slot walls of the rotating magnet slot 1255 in the direction parallel to the third axis Z, and the position of the second rotating magnet 1263 in the direction parallel to the third axis Z can be determined by the two first rotating magnets 1261. If the rotating magnet is inserted in the direction parallel to the second axis X, the magnet assembling device needs to confirm the mounting position of the rotating magnet in the direction parallel to the first axis Y and in the direction parallel to the third axis Z at the same time. In particular, if the second rotating magnet 1263 is inserted in the direction parallel to the second axis X when step C2 is performed, the second rotating magnet 1263 generates magnetic attraction and magnetic repulsion with the first rotating magnet 1261 respectively close to and away from the first sensing magnet slot 1258A, and the magnet assembling device also needs to provide a supporting force for the second rotating magnet 1263 to prevent the second rotating magnet 1263 from tilting.

[0182] Therefore, in some embodiments of the present application, the assembly direction of the first rotating magnet 1261 and the second rotating magnet 1263 is perpendicular to the assembly direction of the first sensing magnet 1283, so that the assembly accuracy of the first rotating magnet 1261, the second rotating magnet 1263 and the first sensing magnet 1283 is guaranteed.

[0183] In some embodiments, the first sensing magnet slot 1258A and the rotating magnet slot 1255 are arranged adjacent to each other, and the spacer plate 1259 is arranged between the two. In order to avoid the second rotating magnet 1263 pressing against the spacer plate 1259 when assembled and affecting the first sensing magnet 1283 on the other side of the spacer plate 1259, a gap is provided between the second rotating magnet 1263 and the spacer plate 1259.

[0184] In some embodiments, the side of the spacer plate 1259 facing the first sensing magnet 1283 is arranged as a plane, so as to facilitate the demolding of the carrier 125.

[0185] In some embodiments, the magnet assembling method of the reflection driving assembly further comprises step E: providing a second sensing magnet 1284 adapted to detect the rotation angle of the carrier 125 around the first axis Y, and mounting the second sensing magnet 1284 on the carrier 125. Specifically, step E can comprise: E1, recessing one side of the carrier 125 inward to form a second sensing magnet slot 1258B, and applying adhesive on the second sensing magnet slot 1258B and / or the second sensing magnet 1284; E2, inserting the second sensing magnet 1284 into the second sensing magnet slot 1258B along a direction parallel to the third axis Z. The insertion stroke of the second sensing magnet 1284 into the second sensing magnet slot 1258B along this direction is short, and the second sensing magnet 1284 can be accommodated and protected by the second sensing magnet slot 1258B. Step E3 is further included: curing the adhesive applied in step E1, so that the second sensing magnet 1284 is pre-fixed in the second sensing magnet slot 1258B. Similar to the first sensing magnet 1283, the second sensing magnet 1284 is small in volume compared to other magnets, and the installation position is susceptible to the influence of other magnets, but in this application, the influence of other magnets on the installation process of the second sensing magnet 1284 can be reduced by arranging the second sensing magnet 1284 and other magnets on different sides of the carrier 125. Then step E can be executed after any other step, or before any other step except steps A and B, to further reduce the influence of other large-volume magnets during the assembly process. There is no requirement for the execution order between steps B and E.

[0186] In some embodiments, the magnet assembling method of the reflection driving assembly further comprises step F: installing the magnetic attraction magnets 12711 on the carrier 125. The magnetic attraction magnets 12711 can be provided as two and are spaced apart on both sides of the carrier base 12511 of the carrier 125 in a direction parallel to the third axis Z. Step F can specifically comprise: F1, recessing the carrier 125 inwardly toward one side of the reflection base 121 in the first axis Y direction to form a magnetic attraction magnet groove, and providing two magnetic attraction magnets 12711 adapted to be magnetically attracted to the second reflection magnetic member 1272 on the reflection base 121; F2, providing adhesive on the magnetic attraction magnet groove and / or the magnetic attraction magnets 12711; F3, inserting the magnetic attraction magnets 12711 into the magnetic attraction magnet groove in a direction parallel to the first axis Y; F4, curing the adhesive provided in step F2. Additionally, the two magnetic attraction magnets 12711 can be installed in batches. Specifically, one of the magnetic attraction magnets 12711 can be pre-fixed in the magnetic attraction magnet groove by performing a round of steps F2 to F4, and the other magnetic attraction magnet 12711 can be pre-fixed in the magnetic attraction magnet groove by performing a second round of steps F2 to F4. Alternatively, the installation of the two magnetic attraction magnets 12711 can be completed at one time. Specifically, when performing step F2, adhesive is provided in the installation area of each of the two magnetic attraction magnets 12711, when performing step F3, the two magnetic attraction magnets 12711 are inserted into the corresponding magnetic attraction magnet groove synchronously or sequentially, and when performing step F4, the adhesive at the two magnetic attraction magnets 12711 is cured.

[0187] In some embodiments, steps A, B, E, F, D, C are performed in sequence. This can reduce the influence of other magnets on the installation process of the sensing magnet, and utilize the two first rotating magnets 1261 for positioning when installing the second rotating magnet 1263.

[0188] In steps B-F, the adhesive can be UV heat-curable adhesive, and the preliminary curing of the UV heat-curable adhesive in steps B3, B4, C3, D4, E3, F4 can be achieved by ultraviolet light irradiation. Further, considering that ultraviolet light is difficult to irradiate to the back of each magnet, the carrier 125 with all the magnets assembled can be baked at the last step of the magnet assembling method of the reflection driving assembly, so that the UV heat-curable adhesive is completely cured, to improve the connection strength and improve the structural stability. Of course, it is also possible to bake the carrier 125 in steps B to E to cure the UV heat-curable adhesive at different positions.

[0189] It should be appreciated that, to improve the reliability of fixing the magnets on the carrier 125, a glue supplement step can be added before or after the final baking step. Specifically, the glue can be supplemented around the first sensing magnet 1283, the second sensing magnet 1284, the magnetic attracting magnet 12711, or the side of the first rotating magnet 1261 and the second rotating magnet 1263 away from the first sensing magnet 1283, and then the supplemented glue is cured by ultraviolet irradiation or baking. It is worth mentioning that in some embodiments, the glue used to fix the magnets on the carrier 125 does not protrude from the carrier 125, thereby reducing the risk of affecting the rotation of the carrier 125 due to the setting of the glue.

[0190] In some embodiments, referring to FIGS. 2, 8-10, the lens module 20 includes an optical lens 21 and a lens driving assembly 22, the optical lens 21 includes optical lenses arranged along the second axis X for converging light rays, and the lens driving assembly 22 is used to drive the optical lens 21 to move to realize optical image stabilization, focusing, etc.

[0191] In some embodiments, the lens driving assembly 22 includes a lens base 221, a fixed group mounting portion 2214 fixedly arranged on the lens base 221, and a movable group carrier 222 movably arranged on the lens base 221. The fixed group mounting portion 2214 and the movable group carrier 222 are adapted to carry the optical lens 21, and the optical lens 21 includes a fixed group 211 mounted on the fixed group mounting portion 2214 and a movable group 212 mounted on the movable group carrier 222, the fixed group 211 and the movable group 212 each include at least one optical lens. The optical lenses in the fixed group 211 are fixedly arranged relative to the lens base 221, and the optical lenses in the movable group 212 are movable relative to the lens base 221 along with the movable group carrier 222, thereby realizing optical image stabilization, focusing, etc.

[0192] In some embodiments, the lens base 221 comprises a lens base bottom 2211, two lens base sides arranged opposite to each other along a direction parallel to the third axis Z, and a lens cover body 228. The lens base bottom 2211 cooperates with the two lens base sides to form an optical lens accommodating cavity suitable for mounting the optical lens 21, and the lens cover body 228 is arranged opposite to the lens base bottom 2211 along a direction parallel to the first axis to relatively close the optical lens accommodating cavity. For the convenience of description, the two lens base sides are respectively referred to as a first lens base side 2212 and a second lens base side 2213. Specifically, the first lens base side 2212, the second lens base side 2213, and the fixed group mounting portion 2214 can all be integrally extended upward from the lens base bottom 2211. Correspondingly, the movable group carrier 222 comprises a carrier body 2221, a first carrier side 2222 corresponding to the first lens base side 2212, and a second carrier side 2223 corresponding to the second lens base side 2213. The fixed group mounting portion 2214 also comprises two sides arranged opposite to each other along a direction parallel to the third axis Z.

[0193] In some embodiments, the lens base 221 and the reflection base 121 are in a split structure or an integrated structure, and the lens cover body 228 and the reflection cover body 129 are in a split structure or an integrated structure. The integrated structure is conducive to reducing assembly steps.

[0194] In some embodiments, the fixed group mounting portion 2214 and the lens base sides form a sliding groove 22141 suitable for the movable group carrier 222 to slide along the second axis X, and a limiting protrusion 22142 at the end of the sliding groove 22141. The first carrier side 2222 and the second carrier side 2223 are suitable for sliding along the sliding grooves 22141 on both sides, respectively, and abutting against the limiting protrusion 22142 to realize the focusing (AF) function. Specifically, the limiting protrusion 22142 can be arranged at one end of the sliding groove 22141 relatively close to the reflection module 10, and the limiting protrusion 22142 extends along a direction parallel to the third axis Z to define the end of the stroke of the carrier side sliding towards the reflection module 10.

[0195] In some embodiments, the carrier seat 222 is provided with a carrier seat buffer 2224 made of a flexible material, such as silicone. The carrier seat buffer 2224 can be provided on the carrier seat side by means of gluing, overmolding, or the like. The carrier seat buffer 2224 is provided on both carrier seat sides arranged opposite to each other in the direction parallel to the third axis Z. Specifically, one carrier seat buffer 2224 can be provided on each carrier seat side, or one carrier seat buffer 2224 can extend to both carrier seat sides. The carrier seat buffer 2224 protrudes in at least one direction relative to the carrier seat side to serve as a buffer during the sliding of the carrier seat 222.

[0196] In some embodiments, the carrier seat buffer 2224 protrudes upward in the direction parallel to the first axis Y to serve as a buffer when the carrier seat 222 collides with the lens cover 228 by accident, and / or the carrier seat buffer 2224 protrudes downward in the direction parallel to the first axis Y to serve as a buffer when the carrier seat 222 collides with the lens base 2211 by accident, and / or the carrier seat buffer 2224 protrudes in the direction close to the reflection module 10 in the direction parallel to the second axis X to serve as a buffer when the carrier seat 222 collides with the limiting protrusion 22142 on the lens base 221 by accident, and / or the carrier seat buffer 2224 protrudes in the direction away from the reflection module 10 in the direction parallel to the second axis X to serve as a buffer when the carrier seat 222 collides with the lens base 221 by accident.

[0197] In some embodiments, the carrier seat buffer 2224 protrudes in the direction parallel to the first axis relative to the limiting protrusion 22142, and the carrier seat buffer 2224 is provided with an avoiding groove 22241 corresponding to the edge of the limiting protrusion 22142. In other words, the height of the top of the carrier seat buffer 2224 is higher than the height of the top of the limiting protrusion 22142, so as to avoid the carrier seat buffer 2224 being cut by the edge of the top of the limiting protrusion 22142 during the sliding of the carrier seat side in the direction parallel to the second axis X. Therefore, the avoiding groove 22241 is provided opposite to the area of the carrier seat buffer 2224 relative to the top of the limiting protrusion 22142.

[0198] In some embodiments, the carrier seat side is provided with an opening 2225 or groove opened in the direction parallel to the third axis Z. When the carrier seat buffer 2224 is formed by the injection molding process, the opening 2225 or groove can form an undercut structure with the carrier seat side to increase the bonding strength. Specifically, the carrier seat 222 can be first formed by injection molding with plastic, and then the carrier seat buffer 2224 can be formed by overmolding with silicone.

[0199] In some embodiments, the lens module 20 further comprises a lens driving part 223, which comprises a focusing magnet 2231 and a focusing coil 2232. The focusing coil 2232 can be arranged in a focusing coil groove of the first lens base side part 2212, and the focusing magnet 2231 can be arranged on the first bearing seat side part 2222 to be opposite to the focusing coil 2232. When the focusing coil 2232 is energized, a magnetic field can be generated and acts on the focusing magnet 2231, thereby driving the movable group bearing seat 222 to move.

[0200] In some embodiments, the lens module 20 further comprises a lens supporting part 224 arranged between the movable group bearing seat 222 and the lens base 2211, for supporting the movable group bearing seat 222, limiting the sliding direction of the movable group bearing seat 222, and reducing the frictional resistance when the movable group bearing seat 222 slides. Specifically, the lens supporting part 224 is arranged on two opposite sides of the movable group bearing seat 222 in a direction parallel to the third axis Z, and the lens supporting part 224 is specifically a guide rod and / or a focusing ball. The movable group bearing seat 222 and the lens base 2211 are provided with corresponding guide rod tracks and focusing ball grooves.

[0201] In some embodiments, the lens supporting part 224 comprises a guide rod and a ball arranged opposite to each other in a direction parallel to the third axis Z. The guide rod is arranged on the same side of the lens module 20 as the lens driving part 223, and the ball is arranged on a side relatively far away from the lens driving part 223. Specifically, the ball can be one. Compared with the ball, the guide rod has a larger contact area with the movable group bearing seat 222 and the lens base 2211, and has a greater frictional resistance to the movable group bearing seat 222. Therefore, arranging the guide rod on a side relatively close to the lens driving part 223 can reduce the risk of tilting of the movable group bearing seat 222 due to different frictional resistances on both sides.

[0202] In some embodiments, the lens module 20 further comprises a lens magnetic attraction part 225. The lens magnetic attraction part 225 comprises a first lens magnetic member 2251 and a second lens magnetic member 2252, which are arranged opposite to each other, and one of the two is arranged on the movable group bearing seat 222, and the other is arranged on the lens base 2211. An interactive magnetic attraction force is generated between the two, so that the movable group bearing seat 222 is movably supported on the lens base 221 by the lens supporting part 224.

[0203] In some embodiments, the lens module 20 further comprises a focus position sensing unit for sensing the position of the movable group carrier 222, so as to realize closed-loop control. Specifically, the focus position sensing unit is composed of a focus position sensing element 226 and the focus magnet 2231 mentioned above, and the focus position sensing element 226 is arranged on the lens base 221 opposite to the focus magnet 2231. More specifically, the focus position sensing element 226 is arranged below the focus coil 2232 opposite to the edge of the focus magnet 2231.

[0204] In some embodiments, the lens driving assembly 22 integrates a driving chip unit 227. The driving chip unit 227 is electrically connected with the reflection driving unit 126, the rotation position sensing unit 128, the lens driving unit 223 and the focus position sensing unit, so as to uniformly control and centrally manage each part. Specifically, the driving chip unit 227 comprises a driving chip circuit board and a driving chip mounted on the circuit board. The driving chip unit 227 and the lens driving unit 223 are arranged on two opposite sides of the lens base 221 along the direction parallel to the third axis, that is, one is arranged on the first lens base side 2212 and the other is arranged on the second lens base side 2213, and the two are staggered, so that the layout is more reasonable.

[0205] In some embodiments, the reflection base 121 and / or the lens base 221 further embeds a conductive insert, so as to electrically connect the driving chip unit 227, the reflection driving unit 126, the rotation position sensing unit 128 and other parts.

[0206] In some embodiments, the imaging module 30 comprises a photosensitive assembly 31 for generating images according to imaging light. Further, the imaging module 30 further comprises a light filtering assembly 32 for filtering stray light in the imaging light, so as to improve the imaging quality.

[0207] As shown in FIG. 11, the present application provides a camera module, which comprises a reflection module 10, a lens module 20 and an imaging module 30. The reflection module 10 is used for reflecting light propagating along the direction parallel to the first axis Y to the direction parallel to the second axis X, and the first axis Y and the second axis X are arranged intersecting each other. The lens module 20 is held on the light reflection path of the reflection module 10, and is used for converging light. The imaging module 30 is held on the path of the imaging light emitted by the lens module 20, and is used for receiving the imaging light emitted by the lens module 20 to generate images.

[0208] In some embodiments, the second axis X direction is generally the length direction of the camera module, and the reflection module 10, the lens module 20 and the imaging module 30 are sequentially arranged along the second axis X direction. The reflection module 10 is arranged to receive the incident light in the first axis Y direction and reflect it to the second axis X direction, thereby reducing the size of the camera module in the second axis X direction, i.e. the length direction of the camera module. Further, the first axis Y direction is generally the height direction of the camera module, in other words, the first axis Y and the second axis X are perpendicular to each other in space. In other words, the reflection module 10 is adapted to reflect the incident light by 90° before exiting. In other embodiments, the first axis Y and the second axis X can also form other angles other than 90° in space. In addition, the first axis Y and the second axis X in the present application can be coplanar or non-coplanar.

[0209] In some embodiments, the lens module 20 includes an optical lens 21 for converging light and a lens base for serving as a support structure of the entire lens module 20. The optical lens 21 can include a single or multiple optical lenses, which can be fixedly arranged or movably arranged relative to the lens base. Further, the lens module 20 further includes a lens driving assembly 22 for driving the optical lens to move relative to the lens base, so as to realize optical anti-shake, focusing and other functions by moving the optical lens.

[0210] It can be understood that the optical axis of the optical lens is arranged along the second axis X. Further, for ease of description, the present application also defines a third axis Z, which is perpendicular to the first axis Y and the second axis X.

[0211] It is worth mentioning that, in the present application, the case where two axes are perpendicular to each other can include the following two cases: one is that the two axes intersect in the same plane and the intersection angle is a right angle, forming a traditional perpendicular relationship; the other is that the two axes are located in different planes, although they do not intersect, but their respective direction vectors are perpendicular to each other, forming a spatial perpendicular relationship. In other words, the perpendicular relationship between any two axes of the first axis Y, the second axis X and the third axis Z can be intersecting or spatial. When they intersect, the intersection angle is a right angle, forming a traditional perpendicular relationship; when they do not intersect, the respective direction vectors are perpendicular to each other, forming a spatial perpendicular relationship. In one example, as shown in FIG. 11, the first axis Y and the third axis Z do not intersect, the direction vector of the first axis Y and the direction vector of the third axis Z are perpendicular to each other, and the first axis Y and the third axis Z are spatially perpendicular to each other. Further, the second axis X and the third axis Z do not intersect, the direction vector of the second axis X and the direction vector of the third axis Z are perpendicular to each other, and the second axis X and the third axis Z are spatially perpendicular to each other.

[0212] In some embodiments, the imaging module 30 comprises a light sensing component 31 for generating images according to the imaging light. Further, the imaging module 30 further comprises a light filtering component 32 for filtering stray light in the imaging light to improve the imaging quality.

[0213] As shown in FIGS. 12-20, the present application further discloses the structure of the reflection module 10.

[0214] In some embodiments, the reflection module 10 comprises a reflection element 11 and a reflection driving component 12, the reflection element 11 is adapted to reflect light propagating along a direction parallel to a first axis Y to propagate along a direction parallel to a second axis X, the second axis X intersects the first axis Y, and the reflection driving component 12 is used to drive the reflection element 11 to realize optical anti-shake, camera angle adjustment and other functions. More specifically, the reflection driving component 12 is adapted to drive the reflection element 11 to rotate along the first axis Y and a third axis Z to realize multi-dimensional adjustment.

[0215] In some embodiments, the reflection element 11 is specifically a prism or a mirror, and the reflection element 11 comprises at least one light reflection surface 18 for turning the light, the light reflection surface 18 is obliquely arranged, and the carrier 125 is provided with at least an oblique mounting surface corresponding to the light reflection surface 18, and the reflection element 11 is fixed on the carrier 125 to synchronously follow the movement of the carrier 125.

[0216] In some embodiments, referring to FIGS. 12 and 13, the reflection driving component 12 comprises a reflection base 121, a carrier 125, a reflection driving part 126 and a rotation position sensing part 128, wherein the reflection base 121 serves as a support structure of the entire reflection driving component 12, and is used to provide a stable mounting platform for other parts in the reflection driving component 12, and the reflection base 121 is integrally arranged with the lens base or arranged separately; the carrier 125 is movably arranged on the reflection base 121 and is adapted to carry the reflection element 11, so that the movement of the carrier 125 relative to the reflection base 121 can realize the movement of the reflection element 11 relative to the reflection base 121; the reflection driving part 126 is adapted to drive the carrier 125 to move relative to the reflection base 121; and the rotation position sensing part 128 is used to sense the position of the carrier 125 and the reflection element 11 thereon relative to the reflection base 121, so as to realize the closed-loop control of the position of the reflection element 11 in cooperation with the reflection driving part 126.

[0217] In some embodiments, the carrier 125 is rotatably arranged on the reflecting base 121, and the reflecting driving part 126 is adapted to drive the carrier 125 to rotate relative to the base around a first axis Y and a third axis Z perpendicular to the first axis Y and a second axis X. Correspondingly, the rotation position sensing part 128 includes a first sensing magnet 1283 and a first rotation sensing element 1281 arranged opposite to each other along a direction parallel to the first axis Y, and a second sensing magnet 1284 and a second rotation sensing element 1282 arranged opposite to each other along a direction perpendicular to the first axis Y, wherein the first rotation sensing element 1281 is arranged at the bottom of the reflecting base 121, and the first sensing magnet 1283 is arranged at a side of the carrier 125 close to the bottom of the reflecting base 121 along a direction parallel to the first axis Y, or in other words, at a side of the carrier 125 away from the reflecting element 11. In the present application, the reflecting element 11 folds the optical path of the entire camera module, which is beneficial to reduce the size of the camera module in the length direction. Further, the arrangement of the reflecting driving assembly 12 can adjust the position of the reflecting element 11, which is beneficial to realize the functions of anti-shake, angle adjustment, etc. of the camera module, and achieve better imaging effect. Further, the arrangement of the rotation position sensing part 128 can accurately sense the position of the reflecting element 11, which is beneficial to realize the closed-loop control of the reflecting module 10.

[0218] In some embodiments, the first rotation sensing element 1281 obtains first magnetic field information of the first sensing magnet 1283 to obtain the rotation angle of the carrier 125 around the third axis Z, and the second rotation sensing element 1282 obtains second magnetic field information of the second sensing magnet 1284 to obtain the rotation angle of the carrier 125 around the first axis Y. According to the magnetic field information obtained by the rotation sensing element, the position information of the carrier 125 can be calculated, and the size of the driving current required for the reflecting driving part 126 to drive the carrier 125 to rotate to the corresponding position can be calculated, so as to be able to adjust and accurately control the position of the carrier 125 in real time, so that the actual rotation of the carrier 125 is more consistent with the expected target.

[0219] In some embodiments, the reflective base 121 comprises a reflective base substrate 1211 and reflective base sides arranged around the reflective base substrate 1211. Specifically, the reflective base sides comprise a first reflective base side 1212, a second reflective base side 1213 and a third reflective base side 1214 arranged in sequence, the first reflective base side 1212 and the third reflective base side 1214 are oppositely arranged along the third axis Z, the second reflective base side 1213 connects the first reflective base side 1212 and the third reflective base side 1214 and is oppositely arranged with the lens module 20 along the second axis X. Correspondingly, the carrier 125 comprises a carrier main body 1251, a first carrier side 1252 and a second carrier side 1253, the first carrier side 1252 and the second carrier side 1253 are arranged on two opposite sides of the carrier main body 1251 along the third axis Z, further, the carrier main body 1251 can comprise a carrier substrate 12511 and a third carrier side 12512, the carrier substrate 12511 is arranged above the reflective base substrate 1211, the third carrier side 12512 is oppositely arranged with the second reflective base side 1213, and the three carrier sides are arranged around the carrier substrate 12511 to form a reflective element accommodating cavity suitable for mounting the reflective element 11.

[0220] In some embodiments, the reflective driving assembly 12 further comprises a support structure arranged between the carrier 125 and the reflective base 121 for realizing the movability of the carrier 125 relative to the reflective base 121.

[0221] In some embodiments, the support structure specifically comprises a frame 123, a first support part 122 and a second support part 124, the frame 123 is arranged on the reflective base 121 and is suitable for carrying the carrier 125, the frame 123 and the reflective base 121 are connected through the first support part 122, so that the frame 123 can rotate around the first axis Y relative to the reflective base 121, the carrier 125 and the frame 123 are connected through the second support part 124, so that the carrier 125 can rotate around the third axis Z relative to the frame 123, thereby realizing the rotation of the carrier 125 around the first axis Y and the third axis Z relative to the reflective base 121. Of course, in other embodiments, the frame 123 can rotate around the third axis Z relative to the reflective base 121, and the carrier 125 can rotate around the first axis Y relative to the frame 123. Both of these two modes increase the frame 123, so that the rotation around the first axis Y and the rotation around the third axis Z can be controlled separately, so that the carrier 125 and the reflective element 11 thereon can rotate accurately around the first axis Y or the third axis Z. Of course, in addition to these two modes, the support structure can also be arranged in other structures without the frame 123.

[0222] In some embodiments, the frame 123 specifically comprises a frame body 1231, a first frame side 1232 and a second frame side 1233, the first frame side 1232 and the second frame side 1233 are arranged at two opposite sides of the frame body 1231 along the third axis Z. The frame body 1231 is rotationally connected with the reflective base 1211 through the first support 122 to support the frame 123, and the frame 123 is rotationally movable relative to the reflective base 121 around the first axis Y; the first carrier side 1252 of the carrier 125 is rotationally connected with the first frame side 1232 through the second support 124, and the second carrier side 1253 of the carrier 125 is rotationally connected with the second frame side 1233 of the frame 123 through the second support 124 to support the carrier 125 on the frame 123 and enable the carrier 125 to rotate relative to the frame 123 around the third axis Z.

[0223] In some embodiments, referring to FIGS. 12-14, one of the frame 123 and the reflective base 121 is provided with an arc-shaped slot 12312, and the other is provided with three auxiliary slots 1216, the arc-shaped slot 12312 is arranged opposite to the three auxiliary slots 1216, and two ends of the arc-shaped slot 12312 respectively extend to two opposite sides of the bottom of the frame 123 or the bottom of the reflective base 121 along a direction parallel to the third axis Z, the three auxiliary slots 1216 are arranged at intervals along the arc-shaped slot 12312, the first support 122 comprises three auxiliary balls arranged between each auxiliary slot 1216 and the arc-shaped slot 12312, the first axis Y passes through the center of the virtual circle A where the arc-shaped slot 12312 is located, and the auxiliary balls cooperate with the arc-shaped slot 12312 and the auxiliary slots 1216 to guide the frame 123 to rotate relative to the reflective base 121 around the first axis Y. It can be understood that the above-mentioned arrangement of the first support 122 can reserve a certain space in the area surrounded by the arc-shaped slot 12312, which is used to install components that need to be arranged between the bottom of the frame 123 and the bottom of the reflective base 121, for example, to provide installation space for the first sensing magnet 1283 and the first rotation sensing element 1281, which facilitates the compact structure of the reflection module 10. It can be understood that the three auxiliary slots 1216 mean that the three auxiliary balls are arranged, and the three auxiliary balls can provide a support plane for the frame 123, so that the frame 123 is stably supported. The three auxiliary slots 1216 are arranged at intervals along the arc-shaped slot 12312, and the first axis Y passes through the center of the virtual circle A where the arc-shaped slot 12312 is located, which ensures the rotation of the frame 123 around the first axis Y. In some embodiments, the auxiliary balls can be more than three, and correspondingly, the auxiliary slots 1216 are also arranged more than three.

[0224] In some embodiments, the arc-shaped slot 12312 corresponds to a central angle greater than 180°, in other words, the arc-shaped slot 12312 is greater than a semicircle, the arc-shaped slot 12312 is arranged to be larger, and each auxiliary slot 1216 can be spaced farther apart, for example, three auxiliary slots 1216 can be arranged at the two ends and the midpoint of the arc-shaped slot 12312, respectively, to ensure that the center of gravity of the combination of the frame 123, the carrier 125, the reflective element 11, and other components on the frame 123 falls within the range of the arc-shaped slot 12312, or in other words, falls within the triangular region formed by the connection of the three auxiliary slots 1216, to provide stable support for the frame 123.

[0225] In some embodiments, the projection of the third axis Z in the direction parallel to the first axis Y passes through the projections of the two opposite sides of the arc-shaped slot 12312, and the first sensing magnet 1283 is arranged in the area around the arc-shaped slot 12312 corresponding to the position of the third axis Z.

[0226] Further, among the three auxiliary slots 1216, at least two are designed as directional limiting slots for limiting the movement of the frame 123 in a specific direction, thereby improving the accuracy and stability of the rotation of the frame 123. In some specific implementations, the three auxiliary slots 1216 include a first limiting slot 12161, a second limiting slot 12162, and a loosely fitted accommodation slot 12163, and the limiting directions of the respective corresponding auxiliary balls of the first limiting slot 12161 and the second limiting slot 12162 are perpendicular to each other. For example, one limiting slot is a straight slot with a length direction parallel to the second axis X, and the other limiting slot is a straight slot with a length direction parallel to the third axis Z. In this way, the frame 123 can be prevented from translating in the third axis Z direction or the second axis X direction relative to the reflective base 121 through the two limiting slots. Specifically, the first limiting slot 12161 can extend in a direction parallel to the third axis Z, and the second limiting slot 12162 can extend in a direction parallel to the second axis X. The limiting slots can also be arranged as straight slots extending in other directions, or as non-straight shapes, and the number of limiting slots can also be set to more than two. The loosely fitted accommodation slot 12163 refers to a slot whose size is slightly larger than the auxiliary ball, and the auxiliary ball has at least two degrees of freedom of movement in the accommodation slot, to reduce the frictional resistance between the auxiliary ball and the accommodation slot, and also to reduce the assembly difficulty of the auxiliary ball. Of course, only directional limiting slots can be arranged, without the loosely fitted accommodation slot 12163.

[0227] More specifically, the first limiting slot 12161 and the second limiting slot 12162 are arranged at an interval of 90° central angle of the virtual circle A on which the arc-shaped slot 12312 is located, as shown in FIG. 14, or arranged at an interval of 180° central angle of the virtual circle A, as shown in FIG. 12. It is easy to understand that the number of the auxiliary slots 1216 can also be more than three. It can be understood that the first limiting slot 12161 and the second limiting slot 12162 are arranged at an interval of 180° central angle of the virtual circle A on which the arc-shaped slot 12312 is located, and even if the first limiting slot 12161 and the second limiting slot 12162 are arranged along the direction parallel to the third axis Z, the limiting effect can be better.

[0228] In some embodiments, the second support part 124 includes a rotating shaft ball, the frame 123 is provided with two rotating shaft lower grooves, the carrier 125 is provided with two rotating shaft upper grooves, the two rotating shaft lower grooves are arranged at two opposite sides of the frame 123 along the direction parallel to the third axis Z, and the two rotating shaft upper grooves are respectively arranged opposite to the two rotating shaft lower grooves. The second support part 124 includes two rotating shaft balls arranged between each rotating shaft lower groove and the corresponding rotating shaft upper groove, the third axis Z passes through the two rotating shaft balls, and the rotating shaft balls cooperate with the rotating shaft upper groove and the rotating shaft lower groove to guide the carrier 125 to rotate relative to the frame 123 around the third axis Z.

[0229] In some embodiments, the reflection driving assembly 12 further includes a reflection magnetic attraction part 127, the reflection magnetic attraction part 127 includes a first reflection magnetic attraction piece arranged on the carrier 125 and a second reflection magnetic attraction piece arranged on the reflection base 121, and the two pieces are magnetically attracted to each other, so that the carrier 125 can be magnetically attracted to the reflection base 121 through the support structure, or in other words, the carrier 125 and the reflection base 121 clamp the support structure therebetween. The first reflection magnetic attraction piece and the second reflection magnetic attraction piece are preferably arranged on the reflection base 1211 and the carrier base 12511, and one of them is a magnet, and the other is a magnetic conductive material suitable for being attracted by the magnet, such as a magnet or a magnetic yoke suitable for being attracted by the magnet.

[0230] In some embodiments, the reflection driving part 126 includes a first rotation magnet 1261 and a first rotation coil 1262 for driving the carrier 125 to rotate around the first axis Y, and a second rotation magnet 1263 and a second rotation coil 1264 for driving the carrier 125 to rotate around the third axis Z, the rotation magnet and the corresponding rotation coil being oppositely arranged along the second axis X. Specifically, the rotation coil is centrally arranged on the second reflection base side 1213 of the reflection base 121, and the rotation magnet is centrally arranged on the third carrier side 12512 of the carrier 125. The rotation coil and the rotation magnet are centrally arranged on the side of the reflection element 11 away from the lens module 20 along the direction of the second axis X, so as to reduce the electromagnetic interference of the reflection driving part 126 on the devices arranged on the other side of the reflection driving assembly 12 (including devices other than the camera module). Wherein, the rotation coil is arranged on the reflection base 121 to facilitate electrical connection. Specifically, the rotation coil can be electrically connected to the rear imaging module 30 through a circuit board mounted on the reflection base 121, or a conductive insert embedded in the reflection base 121.

[0231] In some embodiments, the first rotation magnet 1261 is provided as two, and the second rotation magnet 1263 is provided as a single one. The two first rotation magnets 1261 are symmetrically arranged on the two opposite sides of the second rotation magnet 1263 along the direction parallel to the third axis Z. The gravity distribution can be balanced, the moment of force of the two second rotation magnets 1263 on both sides can be balanced, and the rotation stability of the carrier 125 when being driven can be improved.

[0232] In some embodiments, referring to FIG. 15 and FIG. 16, the rotation position sensing unit 128 includes a first sensing magnet 1283 and a first rotation sensing element 1281 arranged opposite to each other along a direction parallel to the first axis Y. The first rotation sensing element 1281 is arranged on the bottom of the reflection base 121, and the first sensing magnet 1283 is arranged on the side of the carrier 125 close to the bottom of the reflection base 121 along a direction parallel to the first axis Y. In other words, the first rotation sensing element 1281 is arranged on the reflection base 1211 for easy electrical connection, and the first sensing magnet 1283 is arranged on the carrier base 12511. The first rotation sensing element 1281 and the first sensing magnet 1283 are arranged opposite to each other along a direction parallel to the first axis Y. When the carrier 125 rotates around the third axis Z, the first sensing magnet 1283 rotates around the third axis Z with the carrier 125, and the magnetic field generated by the first sensing magnet 1283 at the first rotation sensing element 1281 changes. The first rotation sensing element 1281 can calculate the angle of rotation of the carrier 125 around the third axis Z according to the measured magnetic field information. Referring to FIG. 19 and FIG. 20, the rotation position sensing unit 128 also includes a second sensing magnet 1284 and a second rotation sensing element 1282 arranged opposite to each other along a direction perpendicular to the first axis Y. When the carrier 125 rotates around the first axis Y, the second sensing magnet 1284 rotates around the first axis Y with the carrier 125, and the magnetic field generated by the second sensing magnet 1284 at the second rotation sensing element changes. The second rotation sensing element can calculate the angle of rotation of the carrier 125 around the first axis Y according to the measured magnetic field information.

[0233] In some embodiments, the first sensing magnet 1283 can be directly fixed on the carrier 125 by insert molding, gluing, magnet slot installation, etc. The first rotation sensing element 1281 can be indirectly mounted on the reflection base 121 through a circuit board or directly connected to the reflection base 121, and the first rotation sensing element 1281 can be electrically connected to the imaging module 30 through a circuit board or a conductive insert embedded in the reflection base 121. Compared with the way of arranging the first rotation sensing element 1281 on the frame 123, the angle of rotation of the carrier 125 relative to the reflection base 121 can be more directly measured, and the first rotation element is more convenient for electrical connection. The first sensing magnet 1283 can be a single-pole magnet or a multi-pole magnet. When the first sensing magnet 1283 is a multi-pole magnet, the magnetic field around the magnet can be better controlled, and the magnetic interference to the outside of the reflection module 10 can be reduced. The first rotation sensing element 1281 can be a magnetoresistive sensor, a Hall element, or a driving chip with a magnetoresistive sensor and / or a Hall element. The second sensing magnet 1284 and the second rotation sensing element 1282 are the same.

[0234] In some embodiments, the first rotation sensing element 1281 and the second rotation sensing element 1282 have the same sensitivity. Firstly, the production cost and efficiency can be reduced during the manufacturing and calibration process if the sensitivities of the sensing elements are the same, both of which can be universal, and both of which can adopt a unified calibration process and standard, which helps to improve production efficiency and reduce additional costs due to separate calibration of different sensitivity elements. At the same time, it is also conducive to reducing design complexity and improving response speed. The responses of the two sensing elements to the change of the magnetic field are consistent, and different circuits and algorithms do not need to be developed for elements with different sensitivities when designing. The magnetic field information provided by the two sensing elements can be processed by a unified processing flow, which is conducive to simplifying the data processing algorithm, reducing the complexity of calculation, and improving the speed of data processing. Secondly, the stability is better. Under different environmental conditions (such as temperature, humidity, and air pressure changes), the responses of the two sensing elements with the same sensitivity to the change of the magnetic field will also remain consistent. This consistency helps to maintain the performance stability of the reflection module 10 and reduces the influence of environmental changes on the measurement results.

[0235] In some embodiments, the first sensing magnet 1283 is multiplexed as part of the reflection magnetic attraction part 127 to simplify the structure of the reflection module 10 and reduce the raw material cost of the reflection module 10. In other words, the first sensing magnet 1283 can serve as the first reflection magnetic attraction element, and the bottom of the reflection base 121 is provided with a corresponding magnetic attraction yoke 1274 as the second reflection magnetic attraction element. The magnetic attraction yoke 1274 can be fixed on the reflection base 121 of the reflection base 1211 by insert molding or bonding, etc. The magnetic attraction yoke 1274 is oppositely arranged with the first sensing magnet 1283 along the direction parallel to the first axis Y, so as to exert a magnetic attraction force on the carrier 125 along the direction parallel to the first axis Y towards the reflection base 121, so that the carrier 125 can be attracted to the reflection base 121. Specifically, the magnetic attraction yoke 1274 is arranged as a sheet-shaped magnetic conductive sheet extending along a plane perpendicular to the first axis Y, so as to increase the area opposite to the first sensing magnet 1283.

[0236] In some embodiments, the first sensing magnet 1283 and the magnetic attraction yoke 1274 are both symmetrically arranged about the third axis Z in the direction parallel to the first axis Y. The symmetrical structure of the first sensing magnet 1283 and the magnetic attraction yoke 1274 makes the moment of force on both sides of the third axis Z the same, which is conducive to maintaining the dynamic balance of the carrier 125 relative to the reflection base 121 when the carrier 125 rotates about the third axis Z. In other words, when the carrier 125 rotates about the third axis Z, whether it rotates in the clockwise direction or the counterclockwise direction, the rotational resistance of the reflection magnetic attraction part 127 is basically symmetrical, which is conducive to avoiding the uneven distribution of the magnetic attraction force between the first sensing magnet 1283 and the magnetic attraction yoke 1274 on both sides of the third axis Z, and affecting the rotation effect of the carrier 125 about the third axis Z.

[0237] In some embodiments, the first sensing magnet 1283 and the magnetic attraction yoke 1274 are symmetrically arranged about the second axis X in the direction parallel to the first axis Y. The symmetric arrangement of the first sensing magnet 1283 and the magnetic attraction yoke 1274 makes the moment of force on both sides of the second axis X the same, which is conducive to keeping the carrier 125 in dynamic balance relative to the reflecting base 121 when the carrier 125 rotates about the first axis Y, or in other words, is conducive to keeping the frame 123 carrying the carrier 125 in dynamic balance when the frame 123 rotates about the first axis Y. When the frame 123 carrying the carrier 125 rotates about the first axis Y, the rotating resistance of the reflecting magnetic attraction part 127 on the carrier 125 is substantially symmetrical regardless of whether the carrier 125 rotates in the clockwise direction or the counterclockwise direction, which is conducive to avoiding uneven distribution of the magnetic attraction force between the first sensing magnet 1283 and the magnetic attraction yoke 1274 on both sides of the first axis Y, which affects the rotating effect of the carrier 125 about the first axis Y.

[0238] In some embodiments, the center of the first rotating sensing element 1281 is arranged opposite the center of the first sensing magnet 1283 in the direction parallel to the first axis Y. In other words, the first rotating sensing element 1281 is symmetrically arranged about the second axis X and the third axis Z, respectively, in the direction parallel to the first axis Y.

[0239] In some embodiments, the carrier 125 is supported on the reflecting base 121 by the frame 123, and the frame 123 is provided with a recess or avoiding hole 12311 arranged between the first sensing magnet 1283 and the first rotating sensing element 1281 and / or the magnetic attraction yoke 1274, so that the magnetic attraction yoke 1274 and / or the first rotating sensing element 1281 can be closer to the first sensing magnet 1283 in the direction parallel to the first axis Y, which is conducive to increasing the magnetic attraction force between the magnetic attraction yoke 1274 and the first sensing magnet 1283, and conducive to the first rotating sensing element 1281 detecting the magnetic field of the first sensing magnet 1283. Specifically, the carrier substrate 12511 can be provided with a magnet slot extending downward in the direction parallel to the first axis Y, the magnet slot passes through the avoiding hole 12311 on the frame body 1231 downward, and the first sensing magnet 1283 is installed in the magnet slot, so as to be installed close to the first rotating sensing element 1281 and the magnetic attraction yoke 1274. It should be understood that the avoiding hole 12311 can also be arranged to avoid interference between the first sensing magnet 1283 and the frame 123, therefore, the first sensing magnet 1283 or the magnet slot can also not pass through the avoiding hole 12311 on the frame body 1231.

[0240] In some embodiments, the magnetic yoke 1274 is provided with a yoke opening 12741, and the first rotation sensing element 1281 is arranged in the yoke opening 12741. Specifically, the central region of the magnetic yoke 1274 is provided with the yoke opening 12741, and the first rotation sensing element 1281 is arranged in the yoke opening 12741. Further, in the direction parallel to the first axis Y, the partial projection of the first sensing magnet 1283 overlaps with the projections of the first rotation sensing element 1281 and the yoke opening 12741, and in the direction parallel to the third axis Z, the size of the first sensing magnet 1283 is greater than the size of the yoke opening 12741, that is, another partial projection of the first sensing magnet 1283 can overlap with the projection of the magnetic yoke 1274 around the yoke opening 12741. The first rotation sensing element 1281 and the magnetic yoke 1274 are arranged to be opposite to the first sensing magnet 1283 in the direction parallel to the first axis Y, and the magnetic yoke 1274 and the first sensing magnet 1283 can ensure a certain magnetic attraction force to stably attract the carrier 125. Arranging the first rotation sensing element 1281 in the yoke opening 12741 of the magnetic yoke 1274 enables the first rotation sensing element 1281 to be arranged opposite to the first sensing magnet 1283 through the yoke opening 12741. On the one hand, the first rotation sensing element 1281 is closer in spatial position to the first sensing magnet 1283, and on the other hand, the magnetic yoke 1274 around the first rotation sensing element 1281 can have a certain aggregation effect on the magnetic field generated by the first sensing magnet 1283, so that the first rotation sensing element 1281 can receive more concentrated and stronger magnetic field information, which is beneficial to improving the accuracy and sensitivity of magnetic field detection. In a specific embodiment, the first rotation sensing element 1281 is a magnetoresistance sensor (TMR), and the magnetic yoke 1274 can reduce the magnetic field in unnecessary directions of the magnetoresistance sensor to improve detection accuracy. It can be understood that arranging the first rotation sensing element 1281 in the yoke opening 12741 means that, in the direction parallel to the first axis Y, the projection of the first rotation sensing element 1281 falls in the yoke opening 12741, that is, in the direction parallel to the first axis Y, the projection of the first rotation sensing element 1281 is in the yoke opening 12741.

[0241] It can be understood that the size of the yoke opening 12741 should be greater than the size of the first rotation sensing element 1281, so that the first rotation sensing element 1281 is arranged in the yoke opening 12741. Specifically, the yoke opening 12741 can be processed as a square hole with a size of at least 0.9mm*1mm to match the shape and size of a conventional first rotation sensing element 1281, and the square hole is convenient to process and form. Further, the size of the yoke opening 12741 in the direction parallel to the second axis X can be at least 0.9mm, and the size of the yoke opening 12741 in the direction parallel to the third axis Z can be at least 1mm.

[0242] In order to more intuitively illustrate the influence of the magnetic attraction yoke 1274 on the first rotation sensing element 1281, the present application measures and compares the magnetic field at the first rotation sensing element 1281 under the conditions of not setting the magnetic attraction yoke 1274, setting the magnetic attraction yoke 1274, and each magnetic attraction yoke 1274 having a different size of the yoke opening 12741. Referring to FIGS. 17 and 18. In the figures, the solid line illustrates the condition of not setting the magnetic attraction yoke 1274, the dot-dash line, the dotted line, and the line-dotted line respectively illustrate three conditions of the yoke opening 12741 having the same size in the direction parallel to the third axis Z, but the size in the direction parallel to the second axis X being 0.9 mm, 1.5 mm, and 2.2 mm respectively. Defining the virtual normal of the first rotation sensing element 1281 in the direction parallel to the first axis Y as Bz, and defining the direction perpendicular to Bz as By, then during the operation of the first rotation sensing element 1281, the magnetic difference in the Bz direction is the main parameter for judging the rotation angle of the carrier 125 around the third axis Z, and the magnetic difference in the By direction will interfere with the detection of the first rotation sensing element 1281. In the figures, the abscissa is the stroke or the rotation angle of the carrier 125 rotating around the third axis Z, and the ordinate is the value of the magnetic difference. Obviously, after setting the magnetic attraction yoke 1274, the magnetic difference in the By direction is significantly reduced, while the influence on the magnetic difference in the Bz direction is relatively small. Further, the smaller the size of the yoke opening 12741, the more obvious the reduction effect on the magnetic difference in the By direction. The setting of the magnetic attraction yoke 1274 can selectively reduce the magnetic difference in the By direction, thereby reducing the interference of the magnetic difference in the By direction on the first rotation sensing element 1281 and improving the detection accuracy.

[0243] In some embodiments, the distance between the first rotation sensing element 1281 in the direction parallel to the first axis Y and the carrier 125 is greater than or equal to the distance between the magnetic attraction yoke 1274 and the carrier 125, or the distance between the first rotation sensing element 1281 in the direction parallel to the first axis Y and the carrier 125 is less than the distance between the magnetic attraction yoke 1274 and the carrier 125. In other words, when the first rotation sensing element 1281 is arranged in the yoke opening 12741, the first rotation sensing element 1281 protrudes from the side of the magnetic attraction yoke 1274 close to the carrier 125 in the direction parallel to the first axis Y, so that the first rotation sensing element 1281 is closer to the first sensing magnet 1283 and can receive stronger magnetic field information, which is beneficial for detection. Alternatively, the first rotation sensing element 1281 can not protrude from the side of the magnetic attraction yoke 1274 close to the carrier 125, i.e., the magnetic attraction yoke 1274 is concave downward or flush, so as to avoid other components, such as the frame 123, or the first sensing magnet 1283 extending downward beyond the frame 123, to avoid collision and damage of the first rotation sensing element 1281 with other components during the rotation of the carrier 125.

[0244] In some embodiments, a flexible protective layer is further included to cover the first rotation sensing element 1281, for protecting the first rotation sensing element 1281, especially the portion of the first rotation sensing element 1281 protruding relative to the magnetic attraction yoke 1274. Specifically, the flexible protective layer can be formed by curing glue, or can be formed by adhering or covering other flexible materials outside the first rotation sensing element 1281.

[0245] In some embodiments, in order to reduce the resistance generated by the magnetic attraction force between the magnetic attraction yoke 1274 and the first sensing magnet 1283 to the rotation of the carrier 125 around the third axis Z, it is necessary to reduce the overlapping length of the first sensing magnet 1283 and the magnetic attraction yoke 1274 in the direction parallel to the first axis Y in the direction parallel to the second axis X. In other words, the first sensing magnet 1283 is projected on the magnetic attraction yoke 1274 in the direction parallel to the first axis Y, and the smaller the overlapping length of the projection of the first sensing magnet 1283 in the direction parallel to the second axis X with the magnetic attraction yoke 1274, the smaller the resistance to the rotation of the carrier 125 around the third axis Z, which is conducive to reducing the power consumption required by the reflection driving part 126 to drive the carrier 125. Based on this, the present application reduces the resistance of the reflection magnetic attraction part 127 to the rotation of the carrier 125 by increasing the size of the magnetic yoke opening 12741 in the direction parallel to the second axis X.

[0246] In some embodiments, in the direction parallel to the second axis X, the size of the magnetic yoke opening 12741 is greater than the size of the first sensing magnet 1283. That is, the local area of the magnetic attraction yoke 1274 arranged at both ends of the magnetic yoke opening 12741 in the direction parallel to the second axis X is arranged staggered with the first sensing magnet 1283 in the direction parallel to the first axis Y, so as to reduce the resistance of the magnetic attraction force between the magnetic attraction yoke 1274 and the first sensing magnet 1283 to the rotation of the carrier 125 around the third axis Z. Further, in the process of the rotation of the carrier 125 around the third axis Z, the first sensing magnet 1283 is projected in the direction parallel to the first axis Y, and the size of the projection in the direction parallel to the second axis X is smaller than the size of the magnetic yoke opening 12741. That is, in the process of the rotation of the carrier 125 around the third axis Z, the local area of the magnetic attraction yoke 1274 arranged at both ends of the magnetic yoke opening 12741 in the direction parallel to the second axis X is still arranged staggered with the first sensing magnet 1283 in the direction parallel to the first axis Y. Specifically, when the carrier 125 does not rotate relative to the reflection base 121, the size of the magnetic yoke opening 12741 in the direction parallel to the second axis X is greater than the size of the first sensing magnet 1283 in this direction by at least 0.2 mm.

[0247] In some embodiments, the size of the magnetic yoke opening 12741 in the direction parallel to the second axis X is not less than 1.2 mm and not more than 3 mm. More preferably, the size of the magnetic yoke opening 12741 in the direction parallel to the second axis X is not less than 1.5 mm and not more than 2.5 mm.

[0248] As described above, the reflection driving portion 126 is arranged on the second reflection base side 1213 and the third carrier side 12512, and the first rotation sensing element 1281 and the first sensing magnet 1283 are arranged on the reflection substrate 1211 and the carrier substrate 12511. In other words, the reflection driving portion 126 is arranged on the side of the reflection module 10 away from the lens module 20 along the second axis X, and the first rotation sensing element 1281 and the first sensing magnet 1283 are arranged on the side of the reflection module 10 away from the reflection element 11 along the first axis Y. The combination of the first rotation sensing element 1281 and the first sensing magnet 1283, and the combination of the rotation magnet and the rotation coil are arranged on the two sides of the reflection module 10, respectively, which facilitates reducing the magnetic interference between each other. The second sensing magnet 1284, the second rotation sensing element 1282 and related structures are further described below.

[0249] In some embodiments, the second sensing magnet 1284 is arranged on the side of the carrier 125 along the direction parallel to the third axis Z, and the second rotation sensing element 1282 is arranged on the side of the reflection base 121 along the direction parallel to the third axis Z relative to the second sensing magnet 1284. In other words, the second rotation sensing element 1282 and the second sensing magnet 1284 are arranged opposite to each other along the direction parallel to the third axis Z. The second sensing magnet 1284 can be arranged on the first carrier side 1252 or the second carrier side 1253, and correspondingly, the second rotation sensing element 1282 can be arranged on the first reflection base side 1212 or the third reflection base side 1214. The combination of the second sensing magnet 1284 and the second rotation sensing element 1282, the combination of the first rotation sensing element 1281 and the first sensing magnet 1283, and the combination of the rotation magnet and the rotation coil are arranged on different sides of the reflection module 10, respectively, which facilitates reducing the magnetic interference between each other, allowing each part to be reasonably arranged in the space between the carrier 125 and the reflection base 121, and keeping the structure compact. In particular, the second rotation sensing element 1282 and the first rotation sensing element 1281 are arranged on different sides of the first rotation coil 1262 or the second rotation coil 1264, in other words, the second rotation sensing element 1282 and the first rotation sensing element 1281 are arranged independently of the first rotation coil 1262 and the second rotation coil 1264, thereby avoiding the influence of the second rotation sensing element 1282 and the first rotation sensing element 1281 after the rotation coil is powered on. Among them, the second rotation sensing element 1282 is arranged on the reflection base 121 for easy power supply.

[0250] In some embodiments, the second sensing magnet 1284 is disposed on one side of the carrier 125 along a direction parallel to the third axis Z, and a counterweight element is disposed on the other opposite side of the carrier 125, and the counterweight element is disposed opposite to the second sensing magnet 1284 along the direction parallel to the third axis Z, so as to keep the carrier 125 balanced in gravity distribution, and avoid the effect of the gravity center of the carrier 125 deviating from the rotation effect of the carrier 125. Specifically, the counterweight element can be a sensing magnet without magnetization, or other objects with the same or approximate weight as the second sensing magnet 1284.

[0251] In a specific embodiment, the second sensing magnet 1284 is disposed in the magnet slot of the first carrier side 1252, and the corresponding counterweight element is disposed in the magnet slot of the second carrier side 1253, and the magnet slots on both sides are disposed opposite to each other along the direction parallel to the third axis Z. The second sensing magnet 1284 and the counterweight element are accommodated in the magnet slots, so as to reduce the possibility of collision and damage with other components during the rotation of the carrier 125.

[0252] In some embodiments, the second rotation sensing element 1282 is disposed opposite to the third axis Z in a direction perpendicular to both the first axis Y and the third axis Z. In other words, when the first axis Y direction is taken as the height direction of the reflection module 10, the second rotation sensing element 1282 is disposed at the same height as the third axis Z, so as to reduce the magnetic field interference encountered by the second rotation sensing element 1282.

[0253] It can be understood that, based on the perspective along the direction parallel to the third axis Z, the smaller the distance between the second rotation sensing element 1282 and the first axis Y, the better the symmetry of the second sensing element when the carrier 125 rotates around the first axis Y in two opposite directions. Specifically, based on the perspective along the direction parallel to the third axis Z, the distance between the second rotation sensing element 1282 and the first axis Y is less than or equal to 3.5 mm.

[0254] In addition, in some embodiments, the power consumption of driving the carrier 125 to rotate around the first axis Y is greater than the power consumption of driving the carrier 125 to rotate around the third axis Z. Therefore, the distance between the first axis Y and the first rotation magnet 1261 is increased to save the driving force required to drive the carrier 125 to rotate around the first axis Y in a manner of increasing the torque. However, when the distance between the first axis Y and the third axis Z is large, the utilization rate of the reflecting surface of the reflecting element 11 on the carrier 125 is insufficient. After comprehensive consideration, the first axis Y is arranged on the side of the third axis Z away from the reflecting driving part 126 in a direction parallel to the second axis X, but the distance between the first axis Y and the third axis Z is not large. Since the support structure (for example, the second support part 124) supporting the carrier 125 to rotate around the third axis Z occupies a certain space in the second axis X direction, the distance between the second rotation sensing element 1282 and the first axis Y cannot be arranged too small. Specifically, the distance between the second rotation sensing element 1282 and the first axis Y is greater than or equal to 0.5 mm based on the angle of view in the direction parallel to the third axis Z.

[0255] In some embodiments, the second support part 124 is arranged on one side of the first axis Y in the second axis X direction in the projection along the third axis Z direction, and the second sensing magnet 1284 is arranged on the carrier 125 and on the other side of the first axis Y in the second axis X direction. By arranging the third axis Z and the second sensing magnet 1284 on the two opposite sides of the first axis Y in the direction parallel to the second axis X, the second sensing magnet 1284 does not need to be arranged between the reflecting driving part 126 and the third axis Z in order to avoid the second support part 124 and the frame 123, and the second sensing magnet 1284 and the second rotation sensing element 1282 can be arranged relatively close to the first axis Y. Further, the second sensing magnet 1284 is arranged on the side of the first axis Y away from the reflecting driving part 126 in the second axis X direction in the projection along the third axis Z direction, that is, the second sensing magnet 1284 is arranged on the side of the first axis Y close to the lens module 20 in the second axis X direction. Since the second rotation sensing element 1282 is relatively far away from the reflecting driving part 126, it is also beneficial to reduce the magnetic field interference of the rotation magnet and the rotation coil on the second rotation sensing element 1282.

[0256] In summary, the second rotation sensing element 1282 is arranged on one side of the reflecting base 121 in the direction parallel to the third axis Z and is arranged relative to the second sensing magnet 1284 in the direction parallel to the third axis Z. In the projection along the third axis Z direction, the distance between the second rotation sensing element 1282 and the first axis Y is greater than or equal to 0.5 mm and less than or equal to 3.5 mm, for example, the distance is 1.5 mm.

[0257] In some embodiments, the first rotation magnet 1261 can be multiplexed as the second sensing magnet 1284, and the second rotation sensing element 1282 is arranged on the reflection base 121 opposite to the first rotation magnet 1261. More specifically, the reflection driving part 126 includes the first rotation magnet 1261 arranged on the carrier 125 and the first rotation coil 1262 arranged on the reflection base 121 for driving the carrier 125 to rotate around the first axis Y, and the first rotation magnet 1261 constitutes the second sensing magnet 1284, and the second rotation sensing element 1282 is arranged opposite to the first rotation magnet 1261. The number of components can be reduced, the structure can be simplified, and the mass of the carrier 125 can be reduced to reduce the power consumption of driving the carrier 125.

[0258] In some embodiments, since the carrier 125 is connected to the frame 123 for rotation around the first axis Y relative to the reflection base 121, the carrier 125 rotates with the frame 123 around the first axis Y, and obviously the second sensing magnet 1284 can be arranged on the frame 123, and the second rotation sensing element 1282 is arranged on the reflection base 121, and the angle of rotation of the frame 123 around the first axis Y is the angle of rotation of the carrier 125 around the first axis Y. Specifically, the second sensing magnet 1284 is arranged on one side of the frame 123 in a direction parallel to the third axis Z, the second rotation sensing element 1282 is arranged on one side of the reflection base 121 in a direction parallel to the third axis Z, and the second sensing magnet 1284 and the second rotation sensing element 1282 are arranged opposite to each other in a direction parallel to the third axis Z. More specifically, the first frame side 1232 or the second frame side 1233 of the frame 123 is provided with a magnet groove suitable for mounting the second sensing magnet 1284, and correspondingly, the second rotation sensing element 1282 is arranged on the first reflection base side 1212 or the third reflection base side 1214 of the reflection base 121 to be arranged opposite to the second sensing magnet 1284. Compared with the above-mentioned manner of arranging the second sensing magnet 1284 on the carrier 125, arranging the second sensing magnet 1284 on the frame 123 can reduce the interference caused by the rotation of the carrier 125 around the third axis Z, and improve the measurement accuracy. The foregoing describes that when the second sensing magnet 1284 is arranged on the carrier 125, the minimum distance between the second sensing magnet 1284 and the first axis Y in the direction parallel to the second axis X is affected by the second support part 124, and in this embodiment, the second sensing magnet 1284 is arranged on the frame 123, which can make the second sensing magnet 1284 closer to the first axis Y in the direction parallel to the second axis X.

[0259] In some embodiments, the second sensing magnet 1284 is arranged on one side of the frame 123 along a direction parallel to the third axis Z, and a counterweight element is arranged on the other side of the frame 123 opposite to the second sensing magnet 1284 along the direction parallel to the third axis Z, so as to keep the frame 123 balanced in gravity distribution and avoid the gravity center of the frame 123 from deviating to affect the rotation effect of the frame 123 around the first axis Y. Specifically, the counterweight element can be a sensing magnet without magnetization or other objects with the same or approximate weight as the second sensing magnet 1284.

[0260] In some embodiments, considering that the carrier 125 is arranged on one side along a direction parallel to the second axis X with the reflection driving part 126, the reflection driving part 126 includes a rotation magnet arranged on the carrier 125 and a rotation coil arranged on the reflection base 121, the frame 123 is arranged on one side along a direction parallel to the third axis Z with the second sensing magnet 1284, and the second sensing magnet 1284 and the rotation magnet, in particular the first rotation magnet 1261 closer to the second sensing magnet 1284 in spatial position, can generate mutual magnetic interaction force, which will exert a deflection force on the carrier 125 relative to the frame 123. Therefore, the frame 123 is arranged on one side along a direction parallel to the third axis Z with the second sensing magnet 1284 and on the other side opposite to the second sensing magnet 1284 with an auxiliary magnet, the auxiliary magnet and the rotation magnet generate mutual magnetic interaction force, so as to avoid the carrier 125 from deflecting relative to the frame 123 under the magnetic interaction force between the second sensing magnet 1284 and the rotation magnet. In addition, the magnetic interaction force between the auxiliary magnet, the second sensing magnet 1284 and the respective adjacent rotation magnet is magnetic attraction or magnetic repulsion to achieve offset. Specifically, the auxiliary magnet and the first rotation magnet 1261 closer to the auxiliary magnet can generate magnetic attraction / magnetic repulsion, and the second sensing magnet 1284 and the first rotation magnet 1261 closer to the second sensing magnet 1284 can generate magnetic attraction / magnetic repulsion. In addition, the auxiliary magnet can be reused as a counterweight element to keep the gravity center of the frame 123 balanced, which has the advantages of simplifying the structure, reducing the cost of raw materials and reducing the load weight of the frame 123.

[0261] The present application provides a reflection module 10, as shown in FIG. 21 and FIG. 22, which includes a reflection element 11 adapted to fold the optical path and a reflection driving assembly 12 adapted to adjust the position of the reflection element 11.

[0262] The reflection element 11 is adapted to reflect the light propagating along a direction parallel to the first axis Y to a direction parallel to the second axis X intersecting the first axis Y, so as to fold the optical path. Specifically, the first axis Y and the second axis X can be perpendicular to each other to reflect the light by ninety degrees, or the first axis Y and the second axis X can form an angle other than ninety degrees.

[0263] The reflection driving assembly 12 comprises a reflection base 121, a carrier 125, and a reflection driving part 126. The carrier 125 is rotationally arranged on the reflection base 121 and is adapted to carry the reflection element 11. The reflection driving part 126 is adapted to drive the carrier 125 to rotate relative to the reflection base 121 around a first axis Y and a third axis Z which is perpendicular to the first axis Y and a second axis X, so as to adjust the position of the reflection element 11 relative to the reflection base 121 and adjust the light path folding effect of the reflection element 11.

[0264] It should be noted that in the present application, the positions between two axes include both coplanar and non-coplanar. Taking the case that the two axes are perpendicular to each other as an example, the following two cases can be included: one is that the two axes intersect in the same plane and the intersection angle is a right angle, forming a traditional perpendicular relationship; the other is that the two axes are located in different planes, although they do not intersect, but the direction vectors of each other are perpendicular, forming a spatial perpendicular relationship. Specifically, the perpendicular relationship between any two of the first axis Y, the second axis X and the third axis Z can be a coplanar traditional perpendicular relationship or a non-coplanar spatial perpendicular relationship. In a specific embodiment, the third axis Z forms a spatial perpendicular relationship with the first axis Y and the second axis X respectively.

[0265] In the present application, the reflection driving assembly 12 further comprises a rotation position sensing part 128 adapted to detect the rotation angle of the carrier 125 relative to the reflection base 121 around the first axis Y and the third axis Z. The rotation position sensing part 128 comprises a first sensing magnet 1283 and a first rotation sensing element 1281 arranged opposite to each other along a direction parallel to the first axis Y, and a second sensing magnet 1284 and a second rotation sensing element 1282 arranged opposite to each other along a direction parallel to the first axis Y. Further, the first rotation sensing element 1281 and the second rotation sensing element 1282 are arranged on the side of the reflection base 121 facing the carrier 125, and the first sensing magnet 1283 and the second sensing magnet 1284 are arranged on the side of the carrier 125 facing the reflection base 121, so as to detect the rotation angle of the carrier 125 around the first axis Y and the third axis Z by the first rotation sensing element 1281 and the second rotation sensing element 1282. By detecting the magnetic field information of the corresponding sensing magnet through the rotation sensing element, the rotation angle of the carrier 125 relative to the reflection base 121 around the first axis Y and the third axis Z can be calculated, and the angle of rotation of the carrier 125 is equivalent to the position of the reflection element 11, so that the working condition of the reflection driving part 126 can be adjusted according to the detection result, and closed-loop control of the reflection module 10 is realized. Moreover, the first rotation sensing element 1281 and the second rotation sensing element 1282 are arranged on the same side of the reflection module 10 and can be arranged on the same component to ensure the consistency of the two rotation sensing elements.

[0266] In some embodiments, the first rotation sensing element 1281 obtains first magnetic field information of the first sensing magnet 1283, and the second rotation sensing element 1282 obtains second magnetic field information of the second sensing magnet 1284, so that the rotation angle of the carrier 125 around the third axis Z is calculated by the sum of the first magnetic field information and the second magnetic field information, and the rotation angle of the carrier 125 around the first axis Y is calculated by the difference between the first magnetic field information and the second magnetic field information. It can be understood that the sum and difference of the magnetic field information here are not simply added or subtracted, but include a complex algorithm processing process. Specifically, the process of calculating the rotation angle can include but is not limited to: 1. data preprocessing steps of the magnetic field information, such as converting the output signal of the rotation sensing element into a digital signal, filtering and amplifying the signal, etc.; 2. centering processing or zero mean processing, or translation processing; 3. calibrating the detection result according to the external environment where the reflection module 10 is located; 4. adjusting and optimizing the algorithm in the calculation process.

[0267] In some embodiments, the first rotation sensing element 1281 and the second rotation sensing element 1282 are arranged in a direction parallel to the third axis Z. When the carrier 125 rotates around the third axis Z, the magnetic field information of the corresponding sensing magnet measured by the two rotation sensing elements is relatively symmetrical.

[0268] In some embodiments, the first rotation sensing element 1281 and the second rotation sensing element 1282 have the same sensitivity. Such a design aims to improve system performance and reduce costs. First, in terms of environmental adaptability, the two elements can maintain consistent magnetic field change response under changes in environmental factors such as temperature, humidity, and air pressure. This consistency helps maintain the performance stability of the reflection module 10. Further, by using elements with the same sensitivity, it is beneficial to reduce manufacturing costs and simplify the calibration process, because the two elements can be mutually used, and a calibration standard can be shared during calibration. In addition, this design strategy also improves the efficiency of the design stage, because it eliminates the need to customize circuits and algorithms for different sensitivity elements. The two rotation sensing elements can use a common data processing flow, which not only simplifies algorithm development, but also speeds up data processing, reduces computational complexity. In a specific embodiment, the rotation sensing element can be a TMR (magnetic resistance sensor), a Hall element, or a driving chip with the above-mentioned elements, that is, integrating the above-mentioned elements and a driving control chip into one chip to become a driving chip.

[0269] In some embodiments, the first sensing magnet 1283 and the second sensing magnet 1284 are multi-pole magnets, which can provide more uniform and stable magnetic field distribution. Further, the first sensing magnet 1283 and the second sensing magnet 1284 each include an N-pole region, an S-pole region, and a neutral region between the N-pole region and the S-pole region, and when the carrier 125 is in the initial position (i.e., the rotation angle of the carrier 125 relative to the reflective base 121 is zero), the neutral region of the first sensing magnet 1283 is opposite the first rotation sensing element 1281, and the neutral region of the second sensing magnet 1284 is opposite the second rotation sensing element 1282, at which time the influence of environmental noise on the two rotation sensing elements can be reduced, and the detection accuracy of the two rotation sensing elements can be improved. In addition, the neutral region is centrally disposed in a direction parallel to the second axis X, the N-pole region is disposed on one side of the neutral region in a direction parallel to the second axis X, and the S-pole region is disposed on the other side of the neutral region in a direction parallel to the second axis X, so that the magnetic field received by the two rotation sensing elements has better symmetry.

[0270] In some embodiments, as shown in FIGS. 21, 23, and 24, the carrier 125 includes a carrier body 1251, a first carrier side portion 1252 disposed on one side of the carrier body 1251, and a second carrier side portion 1253 disposed on the other side of the carrier body 1251 opposite the first carrier side portion 1252, the carrier body 1251, the first carrier side portion 1252, and the second carrier side portion 1253 cooperate to form a reflective element accommodating cavity 1254 adapted to accommodate the reflective element 11, wherein the carrier body 1251 includes a carrier base 12511 extending in a direction perpendicular to the first axis Y and a third carrier side portion 12512 disposed above the carrier base 12511, and the first sensing magnet 1283 and the second sensing magnet 1284 are spaced apart on the carrier base 12511. In other words, the carrier 125 is provided with corresponding carrier side portions or the carrier base 12511 on the sides of the reflective element 11 other than the light incident direction and the light exit direction, so as to fix the reflective element 11 in the carrier 125.

[0271] Correspondingly, the reflective base 121 includes a reflective base 1211 and a first reflective base side portion 1212, a second reflective base side portion 1213, and a third reflective base side portion 1214 sequentially disposed on three sides of the reflective base 1211, the reflective base 1211 is disposed opposite the carrier base 12511, and the first rotation sensing element 1281 and the second rotation sensing element 1282 are disposed on the reflective base 1211. That is, the two sensing magnets are disposed on the carrier base 12511 at the bottom of the carrier 125, and the two rotation sensing elements are disposed on the reflective base 1211 opposite the sensing magnets in a direction parallel to the first axis Y.

[0272] Further, in some embodiments, the second reflective base side 1213 is arranged opposite to the third carrier side 12512, and the reflective driving part 126 is arranged between the second reflective base side 1213 and the third carrier side 12512. This means that the reflective driving part 126 and the rotation position sensing part 128 are arranged on different sides of the reflective module 10, which facilitates making full use of the space between the different side faces of the carrier 125 and the corresponding side faces of the reflective base 121, and achieving a reasonable and compact layout.

[0273] In some embodiments, the reflective driving part 126 comprises a first rotation magnet 1261 and a first rotation coil 1262 arranged opposite to each other along a direction parallel to the second axis X, and a second rotation magnet 1263 and a second rotation coil 1264 arranged opposite to each other along a direction parallel to the second axis X, the first rotation magnet 1261 and the first rotation coil 1262 cooperate to drive the carrier 125 to rotate around the first axis Y, and the second rotation magnet 1263 and the second rotation coil 1264 cooperate to drive the carrier 125 to rotate around the third axis Z. When the coils are energized, magnetic interaction forces are generated between the coils and the rotation magnets, thereby exerting forces on the carrier 125 to move relative to the reflective base 121. It is easy to understand that arranging the rotation magnets and the sensing magnets on different side faces of the carrier 125, and arranging the two rotation sensing elements and the rotation coils on different side faces of the reflective base 121, also facilitates reducing magnetic interference between the reflective driving part 126 and the rotation position sensing part 128, and alleviating the pressure on the reflective base 121 to be electrically connected to multiple elements on one side.

[0274] In some embodiments, the reflective module 10 further comprises a reflective magnetic attraction part 127, which comprises a first magnetic attraction yoke 1271 and a second magnetic attraction yoke 1272 arranged on the reflective base 121, and two magnetic attraction magnets arranged on the carrier 125 to correspond to the two magnetic attraction yokes respectively. The first magnetic attraction yoke 1271 and the second magnetic attraction yoke 1272 are both made of a material with magnetic permeability, and are suitable to be attracted by the magnetic attraction magnets. Through the magnetic attraction force between the magnetic attraction yokes and the magnetic attraction magnets, a magnetic attraction force is exerted on the carrier 125 in a direction parallel to the first axis Y and towards the reflective base 121, so that the carrier 125 is attracted and mounted on the reflective base 121.

[0275] In some embodiments, the sensing magnets are multiplexed as the magnetic attraction magnets. Specifically, the first magnetic attraction yoke 1271 is arranged opposite to the first sensing magnet 1283 along a direction parallel to the first axis Y, and the second magnetic attraction yoke 1272 is arranged opposite to the second sensing magnet 1284 along a direction parallel to the first axis Y, so that the reflective magnetic attraction part 127 can exert a magnetic attraction force on the carrier 125 in a direction parallel to the first axis Y and towards the reflective base 121. Multiplexing the sensing magnets as part of the reflective magnetic attraction part 127 can simplify the structure of the reflective module 10 and reduce the raw material cost of the reflective module 10.

[0276] In some embodiments, the first magnetic yoke 1271 and the second magnetic yoke 1272 are connected through a magnetic connection part 1273, so that the relative position between the two magnetic yokes can be set more accurately. Specifically, the first magnetic yoke 1271, the second magnetic yoke 1272 and the magnetic connection part 1273 can be integrally formed, for example, formed from a sheet of magnetic material, which can save the processing and assembly steps while ensuring the accurate relative position between the two magnetic yokes.

[0277] In addition, the first rotating magnet 1261, the second rotating magnet 1263, the first sensing magnet 1283, the second sensing magnet 1284, the first magnetic yoke 1271, the second magnetic yoke 1272, the magnetic connection part 1273 and other elements in the present application can be fixed on the carrier 125 or the reflection base 121 by bonding or insert molding.

[0278] In some embodiments, the reflection module 10 further comprises a frame 123 disposed between the carrier 125 and the reflection base 121, the carrier 125 is adapted to rotate relative to the frame 123 about the third axis Z, and the frame 123 is adapted to drive the carrier 125 to rotate relative to the reflection base 121 about the first axis Y. In a specific embodiment, the frame 123 and the reflection base 121 are rotationally connected through the first support part 122, and the carrier 125 and the frame 123 are rotationally connected through the second support part 124. The rotation of the carrier 125 about the first axis Y and the rotation of the carrier 125 about the third axis Z can be controlled separately, which is beneficial to accurately control the rotation angle of the carrier 125.

[0279] In some embodiments, the magnetic connection part 1273 avoids the first support part 122 between the reflection base 121 and the frame 123, so as to avoid interference with the rotation support structure between the reflection base 121 and the frame 123. In a specific embodiment, the first support part 122 comprises a rotation shaft support 1221 and at least two auxiliary balls 1222, the at least two auxiliary balls 1222 cooperate with the rotation shaft support 1221 to form a support plane supporting the frame 123, one of the reflection base 121 and the frame 123 is fixedly provided with the rotation shaft support 1221, and the other is provided with a corresponding rotation shaft positioning groove, the rotation shaft support 1221 is adapted to be inserted into the rotation shaft positioning groove along the first axis Y, and the rotation shaft support 1221 cooperates with the rotation shaft positioning groove to limit the rotation of the frame 123 relative to the reflection base 121 about the first axis Y, or in other words, the rotation shaft support 1221 and the rotation shaft positioning groove define the first axis Y. Correspondingly, the magnetic connection part 1273 is provided with an avoiding part 12731 avoiding the rotation shaft support 1221 or the rotation shaft positioning groove.

[0280] More specifically, the avoiding part 12731 can be set as a through hole, the rotation shaft support 1221 is set on the reflection base 121, and the rotation shaft support 1221 is formed by a partial area of the reflection base 121 of the reflection base 1211 protruding through the through hole to the direction of the carrier base 12511 of the carrier 125. In other words, the avoiding part 12731 can avoid the forming of the rotation shaft support 1221.

[0281] In some embodiments, as shown in FIG. 23 and FIG. 25, considering that the rotation sensing element and the magnetic yoke need to be arranged on the reflection base 121 respectively relative to the sensing magnet along the direction parallel to the first axis Y, the first magnetic yoke 1271 is provided with a first opening 12711, the second magnetic yoke 1272 is provided with a second opening 12721, the first rotation sensing element 1281 is arranged in the first opening 12711, and the second rotation sensing element 1282 is arranged in the second opening 12721. In this way of arranging the rotation sensing element in the opening of the magnetic yoke, while realizing that the rotation sensing element and the magnetic yoke are opposite to the sensing magnet at the same time, the magnetic yoke can also focus the magnetic field generated by the sensing magnet, so that the rotation sensing element in the opening can receive a more concentrated and stronger magnetic field signal, thereby improving the accuracy and sensitivity of the magnetic field information acquisition.

[0282] In some embodiments, the projection area of the first sensing magnet 1283 towards one side of the first rotation sensing element 1281 along the direction parallel to the first axis Y is greater than the projection area of the first opening 12711, and the projection area of the second sensing magnet 1284 towards one side of the second rotation sensing element 1282 is greater than the projection area of the second opening 12721. In other words, the projection 1283' of the first sensing magnet 1283 towards one side of the first rotation sensing element 1281 along the direction parallel to the first axis Y at least partially falls on the first magnetic yoke 1271, and the projection of the second sensing magnet 1284 towards one side of the second rotation sensing element 1282 at least partially falls on the second magnetic yoke 1272. The at least partial of the magnetic yoke and the sensing magnet are arranged opposite to each other in the direction parallel to the first axis Y, so that there is enough magnetic attraction force between them, and the carrier 125 can be stably adsorbed on the reflection base 121 through the frame 123.

[0283] In some embodiments, the reflection module 10 further comprises a conductive insert 41, the conductive insert 41 is arranged on the side of the magnetic yoke away from the carrier 125, the first rotation sensing element 1281 and the second rotation sensing element 1282 are fixedly connected with the conductive insert 41 respectively to realize electrical connection. Further, the conductive insert 41 can be embedded in the reflection base 121, the conductive insert 41 can be electrically connected with the rotation position sensing element at the yoke opening of the magnetic yoke, the rotation position sensing element can realize electrical connection with the reflection driving part 126 and other modules in the camera module except the reflection module 10 through the conductive insert 41, for example, electrical connection with the imaging module 30.

[0284] In some embodiments, the conductive insert 41 is bent towards the carrier 125, so that the first rotation sensing element 1281 and the second rotation sensing element 1282 have a smaller distance to the carrier 125 than the distance between the magnetic yoke and the carrier 125 in the direction parallel to the first axis Y. Specifically, the welding section 411 of the conductive insert 41 adapted to be welded with the rotation sensing element can extend towards the carrier 125 in the yoke opening of the magnetic yoke, so that the side of the rotation sensing element facing the sensing magnet can protrude from the side of the magnetic yoke facing the sensing magnet. Such a structure reduces the distance between the rotation sensing element and the sensing magnet, so that the rotation sensing element can receive a relatively stronger magnetic field signal, which is beneficial to improve the sensitivity and accuracy of detection.

[0285] In some embodiments, the first rotation sensing element 1281 and the second rotation sensing element 1282 have a distance to the carrier 125 greater than or equal to the distance between the magnetic yoke and the carrier 125 in the direction parallel to the first axis Y. In other words, in the direction parallel to the first axis Y, the side of the rotation sensing element facing the sensing magnet is flush or concave relative to the side of the magnetic yoke facing the sensing magnet, and the magnetic yoke can play a role in preventing collision and shielding protection for the rotation sensing element.

[0286] In some embodiments, the reflection module 10 further comprises a flexible protective layer covering the first rotation sensing element 1281 and the second rotation sensing element 1282 to protect the rotation sensing element. In particular, when the side of the rotation sensing element facing the sensing magnet protrudes towards the carrier 125 relative to the side of the magnetic yoke facing the sensing magnet, the flexible protective layer arranged on the rotation sensing element can provide better protection for the rotation sensing element. Further, the flexible protective layer can be formed by curing glue, which has low cost and can tightly cover the rotation sensing element to provide reliable protection.

[0287] In some embodiments, the frame 123 is provided with a clearance hole 12311 penetrating through in the direction parallel to the first axis Y, and the projections of the first sensing magnet 1283 and the second sensing magnet 1284 in the direction parallel to the first axis Y are located within the projection of the clearance hole 12311, so as to reduce the influence of the arrangement of the frame 123 on the magnetic field of the sensing magnet.

[0288] In some embodiments, the carrier 125 is provided with a mounting groove 125111 protruding in the direction parallel to the first axis Y towards the clearance hole 12311, and the first sensing magnet 1283 and the second sensing magnet 1284 are arranged in the mounting groove 125111, so that the sensing magnets are arranged relatively close to the rotating sensing element and the magnetic yoke in the direction parallel to the first axis Y, which is conducive to increasing the magnetic field of the sensing magnets at the rotating sensing element and the magnetic yoke, and improving the detection sensitivity.

[0289] The application also provides a camera module based on the optimized reflection module 10, as shown in FIGS. 26-28. The camera module comprises any of the above-mentioned reflection modules 10, and further comprises a lens module 20 and an imaging module 30, wherein the lens module 20 is held on the light reflection path of the reflection module 10, i.e., arranged on one side of the reflection module 10 in the direction parallel to the second axis X; and the imaging module 30 is adapted to receive the light emitted by the lens module 20 for imaging. In a specific embodiment, the imaging module 30 can be arranged on the side of the lens module 20 away from the reflection module 10 in the direction parallel to the second axis X.

[0290] In some embodiments, the lens module 20 comprises a lens base 221, a lens carrier 222 movably arranged on the lens base 221, and an optical lens 21 carried by the lens carrier 222, wherein the optical lens 21 comprises at least one optical lens. In a specific embodiment, the optical lens is directly mounted on the lens carrier 222, in other words, the optical lens 21 can be arranged in a structure without a lens barrel.

[0291] In some embodiments, the lens base 221 is embedded with a base insert 2215, which at least plays a role of strengthening the structural strength. In a specific embodiment, the lens base 221 and the reflection base 121 can be an integrally formed structure, and the base insert 2215 is connected with the magnetic yoke. As a supplement, in the height direction of the camera module in the direction parallel to the first axis Y, the height of the base insert 2215 is lower than the height of the magnetic yoke, and as known from the foregoing, the magnetic yoke needs to be arranged relatively close to the sensing magnet in the height direction of the camera module. Further, the base insert 2215 and the magnetic yoke can be an integral structure, for example, made of a metal sheet with magnetic conductivity.

[0292] In some embodiments, the optical lens 21 further comprises a lens driving portion 223 adapted to drive the lens carrier 222. Similar to the reflection driving portion 126, the lens driving portion 223 comprises a focusing magnet 2231 and a focusing coil 2232 arranged oppositely. One of the focusing magnet 2231 and the focusing coil 2232 is arranged on the lens base 221, and the other is arranged on the lens carrier 222. The two are arranged oppositely along a direction parallel to the third axis Z, and are adapted to cooperate to drive the lens carrier 222 to slide along a direction parallel to the second axis X, thereby achieving the optical focusing function.

[0293] In some embodiments, in order to achieve smooth sliding of the lens carrier 222 along the lens base 221, a lens support portion 224 is arranged between the two. The lens support portion 224 can specifically comprise a guide rod and / or a ball. In a specific embodiment, a guide rod is arranged on one side of the lens base 221 where the lens driving portion 223 is arranged, and one, two or more balls are arranged on the opposite side of the lens base 221 along a direction parallel to the third axis Z. The guide rod and the ball cooperate to provide a support plane for the lens carrier 222 and guide the lens carrier 222 to slide along a direction parallel to the second axis X. Moreover, such a structure can also avoid the problem of tilting of the lens carrier 222 due to the relatively large sliding friction of the guide rod compared to the ball.

[0294] In some embodiments, the lens module 20 further comprises a lens magnetic attraction portion 225. The lens magnetic attraction portion 225 comprises a first lens magnetic member 2251 and a second lens magnetic member 2252 arranged oppositely. One of the first lens magnetic member 2251 and the second lens magnetic member 2252 is arranged on the lens carrier 222, and the other is arranged on the lens base. The two generate a magnetic attraction force that interacts with each other, so that the lens carrier 222 is attracted to the lens base 221 through the lens support portion 224. In this application, the first lens magnetic member 2251 is arranged as a magnet, and the base insert 2215 can be reused as the second lens magnetic member 2252, thereby saving the number of parts, simplifying the structure and reducing the cost.

[0295] In some embodiments, the lens module 20 further comprises a focusing buffer 2216 arranged on the lens base 221. The focusing buffer 2216 is arranged on the sliding path of the lens carrier 222 to provide a buffer effect for the lens carrier 222. In a specific embodiment, the lens base 221 is provided with a focusing buffer 2216 on each of the two opposite sides along a direction parallel to the third axis Z.

[0296] In some embodiments, the focusing buffer 2216 includes a hard support part 22161 and a flexible buffer part 22162 arranged on the hard support part 22161, the hard support part 22161 provides support for the flexible buffer part 22162, and can be made of a metal material, and the flexible buffer part is used for buffering, and can be made of glue curing or a material such as silica gel or rubber.

[0297] In some embodiments, the hard support part 22161 extends along a direction parallel to the second axis X, the hard support part 22161 is bent downward at both ends along the direction parallel to the second axis X, and the flexible buffer part 22162 is arranged at each end, respectively, and the two flexible buffer parts 22162 at both ends of the hard support part 22161 are arranged at both ends of the lens holder 222 along the direction parallel to the second axis X, thereby playing a buffering role when the lens holder 222 slides along the direction parallel to the second axis X.

[0298] In some embodiments, the lens module 20 further includes a focusing position sensing element 226 adapted to detect the position of the lens holder 222. Further, the focusing position sensing element 226 can be arranged opposite the focusing magnet 2231 in the lens driving part 223, and the position of the lens holder 222 can be calculated by detecting the magnetic field information of the focusing magnet 2231. Specifically, the focusing position sensing element 226 can be arranged in the lens base 221 and mounted in the middle part of the focusing coil 2232, making full use of the space in the middle part of the focusing coil 2232, and the focusing position sensing element 226 and the focusing coil 2232 are arranged together, facilitating electrical connection.

[0299] In some embodiments, the reflection driving part 126, the rotation position sensing part 128 in the reflection module 10, and the imaging module 30 are electrically connected through a conductive insert 41, the conductive insert 41 is based on the reflection base 121 and extends from both opposite sides of the lens module 20 along the third axis Z direction to the imaging module 30 along the direction parallel to the second axis X.

[0300] 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 to the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A reflex drive assembly, characterized by The application relates to a reflection base, a carrier rotatingly arranged on the reflection base, the carrier being adapted to carry a reflection element adapted to reflect light rays propagating in a direction parallel to a first axis to propagate in a direction parallel to a second axis, a reflection driving part comprising a second rotating magnet and a second rotating coil oppositely arranged, the second rotating magnet and the second rotating coil being adapted to cooperatively drive the carrier to rotate around a third axis relative to the reflection base, the third axis being perpendicular to the first axis and the second axis, a rotating position sensing part comprising a first sensing magnet adapted to detect a rotating angle of the carrier around the third axis and a first rotating sensing element, the first sensing magnet and the second rotating magnet being oppositely arranged in a direction perpendicular to the third axis, the first rotating sensing element being adapted to simultaneously sense magnetic fields of the first sensing magnet and the second rotating magnet. The projection of the first rotating sensing element along the perpendicular direction of the surface of the second rotating magnet overlaps the first sensing magnet and the second rotating magnet. The second rotating magnet and the second rotating coil are oppositely arranged in a direction parallel to the second axis, the first sensing magnet and the second rotating magnet are oppositely arranged in a direction parallel to the first axis, and the first rotating sensing element is oppositely arranged with the first sensing magnet and the second rotating magnet in a direction parallel to the second axis. The projection of the second rotating magnet and the projection of the second rotating coil overlap the first axis in a direction parallel to the second axis, the first rotating sensing element is arranged on one side of the second rotating coil in a direction parallel to the first axis, and the first sensing magnet is arranged on one side of the second rotating magnet in a direction parallel to the first axis. The first rotating sensing element is arranged outside the second rotating coil.

2. The reflex drive assembly of claim 1, wherein: The reflection driving part further comprises a first rotating magnet and a first rotating coil, the first rotating magnet and the first rotating coil being adapted to cooperatively drive the carrier to rotate around the first axis relative to the reflection base, the first rotating coil and the second rotating coil are located on the same side of the reflection driving part in a direction perpendicular to the third axis, and the first rotating sensing element is arranged outside the first rotating coil.

3. The reflex drive assembly of claim 1, wherein: The magnetic poles of the first sensing magnet and the second rotating magnet on the sides facing each other are opposite.

4. The reflex drive assembly of claim 3, wherein: A spacing plate is arranged between the first sensing magnet and the second rotating magnet.

5. A reflex drive assembly according to any one of claims 1 to 4, wherein: The side of the first sensing magnet away from the second rotating magnet is inclined towards or away from the first rotating sensing element.

6. The reflex drive assembly of claim 5, wherein: The inclination angle of the first sensing magnet is not greater than 45 degrees.

7. A reflex drive assembly according to any one of claims 1 to 4, wherein: The extension distance of the surface of the first sensing magnet facing the first rotating sensing element and away from the second rotating magnet in a direction perpendicular to the third axis is not greater than 1.2 mm, and the extension distance of the surface of the first sensing magnet facing the second rotating magnet in a direction perpendicular to the third axis is not less than 0.4 mm.

8. The reflex drive assembly of claim 7, wherein: ​ 9. The reflex drive assembly of claim 1, wherein: ​ 10. The reflex drive assembly of claim 9, wherein: ​ 11. The reflex drive assembly of claim 9, wherein: ​ 12. The reflex drive assembly of claim 9, wherein: The first sensing magnet is closer to the first rotation sensing element than the second rotation magnet along a direction in which the first sensing magnet is arranged opposite to the second rotation magnet.

13. The reflex drive assembly of claim 9, wherein: The carrier is provided with a first sensing magnet slot having a first inclined limiting surface and a second inclined limiting surface arranged opposite to each other, and the first inclined limiting surface and the second inclined limiting surface are adapted to abut two adjacent sides of the first sensing magnet so as to allow the first sensing magnet to be obliquely installed in the first sensing magnet slot.

14. The reflex drive assembly of claim 9, wherein: The first sensing magnet and the second rotation magnet are installed on the carrier, and the carrier is provided with a reflective magnetic conducting sheet which avoids the first sensing magnet and is arranged opposite to the second rotation magnet.

15. The reflex drive assembly of claim 1, wherein: The rotation position sensing unit further comprises a second rotation sensing element and a second sensing magnet, and the second rotation sensing element is arranged opposite to the second sensing magnet so as to cooperatively detect a rotation angle of the carrier around the first axis.

16. A method of assembling a magneto assembly of a reflection drive assembly, applied to the reflection drive assembly according to any one of claims 1 to 15, characterized in that, The method comprises the following steps: A, providing a carrier, a second rotation magnet adapted to drive the carrier to rotate around a third axis, and a first sensing magnet adapted to detect a rotation angle of the carrier around the third axis; B, installing the first sensing magnet on one side of the carrier; C, installing the second rotation magnet on the carrier so that the second rotation magnet is arranged opposite to the first sensing magnet along a direction perpendicular to the third axis.

17. The magnet assembling method according to claim 16, wherein Between the step B and the step C, the method further comprises a step D: providing two first rotation magnets adapted to drive the carrier to rotate around a first axis perpendicular to the third axis, and installing the two first rotation magnets on the carrier at intervals and on the same side of the carrier as the first sensing magnet, so that the second rotation magnet can be installed between the two first rotation magnets in the step C.

18. The magnet assembling method according to claim 17, wherein The magnetic poles of the second rotation magnet on a side facing the first sensing magnet are the same as the magnetic poles of the first rotation magnets on two sides facing the second rotation magnet, and the magnetic poles of the second rotation magnet on a side away from the first sensing magnet are opposite to the magnetic poles of the first rotation magnets on the two sides facing the second rotation magnet.

19. The magnet assembling method according to claim 17 or 18, wherein One side of the carrier is inwardly recessed to form a first sensing magnet slot and a rotation magnet slot, the first sensing magnet is bonded in the first sensing magnet slot, and the first rotation magnet and the second rotation magnet are bonded in the rotation magnet slot.

20. The magnet assembling method according to claim 19, wherein The two first rotation magnets in the step D are inserted into the rotation magnet slot along a direction parallel to the first axis in sequence, and the second rotation magnet in the step C is inserted into the rotation magnet slot along a direction parallel to the first axis.

21. A reflection drive assembly characterized by, It comprises: a reflective base; a carrier rotatably arranged on the reflective base and adapted to carry a reflective element adapted to reflect light propagating along a direction parallel to a first axis to a direction parallel to a second axis intersecting the first axis; a reflective driving unit adapted to drive the carrier to rotate around the first axis and a third axis relative to the base, the third axis being perpendicular to the first axis and the second axis; The rotation position sensing part comprises a first sensing magnet and a first rotation sensing element arranged oppositely along a direction parallel to the first axis, the first rotation sensing element is arranged on the bottom of the reflecting base, and the first sensing magnet is arranged on the side of the carrier close to the bottom of the reflecting base along the direction parallel to the first axis. The bottom of the reflecting base is provided with a magnetic attraction yoke arranged oppositely with the first sensing magnet along the direction parallel to the first axis, and adapted to apply a magnetic attraction force to the carrier along the direction parallel to the first axis towards the reflecting base.

22. The reflex drive assembly of claim 21, wherein: The first sensing magnet and the magnetic attraction yoke are both symmetrically arranged about the third axis along the direction parallel to the first axis, and both symmetrically arranged about the second axis.

23. The reflex drive assembly of claim 21, wherein: The magnetic attraction yoke is provided with a yoke opening, the first rotation sensing element is arranged in the yoke opening, and the projection of the first sensing magnet along the direction parallel to the first axis overlaps the projections of the first rotation sensing element and the yoke opening, the size of the first sensing magnet along the direction parallel to the third axis is greater than the size of the yoke opening.

24. The reflex drive assembly of claim 23, wherein: The size of the yoke opening along the direction parallel to the second axis is greater than the size of the first sensing magnet.

25. The reflex drive assembly of claim 24, wherein: During the rotation of the carrier about the third axis, the projection of the first sensing magnet along the direction parallel to the first axis has a size along the direction parallel to the second axis smaller than the size of the yoke opening, and the size of the yoke opening along the direction parallel to the second axis is greater than the first sensing magnet by at least 0.2mm when the carrier does not rotate relative to the reflecting base.

26. A reflex drive assembly as claimed in any of claims 23 to 25, wherein: The first rotation sensing element does not protrude from the side of the magnetic attraction yoke close to the carrier along the direction parallel to the first axis, or protrudes from the side of the magnetic attraction yoke close to the carrier along the direction parallel to the first axis.

27. The reflex drive assembly of claim 26, wherein: It also comprises a flexible protective layer covering the first rotation sensing element.

28. The reflex drive assembly of claim 21, wherein: It also comprises a frame, a first support part and a second support part, the frame is arranged on the reflecting base and is adapted to carry the carrier, the frame and the reflecting base are connected through the first support part, so that the frame can rotate relative to the reflecting base about the first axis, and the carrier and the frame are connected through the second support part, so that the carrier can rotate relative to the frame about the third axis.

29. The reflex drive assembly of claim 28, wherein: One of the frame and the reflecting base is provided with an arc-shaped slot, the other is provided with three auxiliary slots, and the two ends of the arc-shaped slot extend to the opposite sides of the bottom of the frame or the bottom of the reflecting base along the direction parallel to the third axis, the three auxiliary slots are arranged at intervals along the arc-shaped slot, the first support part comprises three auxiliary balls arranged between each auxiliary slot and the arc-shaped slot, the first axis passes through the center of the virtual circle where the arc-shaped slot is located, and the auxiliary balls cooperate with the arc-shaped slot and the auxiliary slots to guide the rotation of the frame relative to the reflecting base about the first axis.

30. The reflex drive assembly of claim 29, wherein: The three auxiliary grooves include a first limiting groove, a second limiting groove and a loosely fitted accommodating groove, the first limiting groove and the second limiting groove are perpendicular to each other in the limiting direction of the corresponding auxiliary ball.

31. The reflex drive assembly of claim 30, wherein: The first limiting groove extends along a direction parallel to the third axis, and the second limiting groove extends along a direction parallel to the second axis.

32. The reflex drive assembly of claim 29, wherein: The frame is provided with two rotation shaft lower grooves, and the carrier is provided with two rotation shaft upper grooves, the two rotation shaft lower grooves are arranged on the two opposite sides of the frame along a direction parallel to the third axis, and the two rotation shaft upper grooves are arranged opposite to the two rotation shaft lower grooves respectively, the second support part includes two rotation shaft balls arranged between each rotation shaft lower groove and the corresponding rotation shaft upper groove, the third axis passes through the two rotation shaft balls, and the rotation shaft balls are guided to rotate the carrier relative to the frame around the third axis in cooperation with the rotation shaft upper groove and the rotation shaft lower groove, and the third axis is projected along a direction parallel to the first axis, the projection of the third axis passes through the two opposite sides of the projection of the arc-shaped groove, and the first sensing magnet is arranged in an area surrounded by the arc-shaped groove.

33. The reflex drive assembly of claim 28, wherein: The rotation position sensing part further includes a second rotation sensing element and a second sensing magnet, the second rotation sensing element is arranged on one side of the reflection base along a direction parallel to the third axis, and the second sensing magnet is arranged opposite to the second rotation sensing element along a direction parallel to the third axis.

34. The reflex drive assembly of claim 33, wherein: The second sensing magnet is arranged on one side of the carrier along a direction parallel to the third axis, and a counterweight element is arranged on the other opposite side of the carrier and opposite to the second sensing magnet along a direction parallel to the third axis.

35. The reflex drive assembly of claim 33, wherein: In the projection along the direction parallel to the third axis, the second support part is arranged on one side of the first axis along a direction parallel to the second axis, and the second sensing magnet is arranged on the carrier and on the other opposite side of the first axis along a direction parallel to the second axis.

36. The reflex drive assembly of claim 35, wherein: In the projection along the direction parallel to the third axis, the distance between the second rotation sensing element and the first axis is greater than or equal to 0.5 mm and less than or equal to 3.5 mm.

37. The reflex drive assembly of claim 33, wherein: The second sensing magnet is arranged on one side of the frame along a direction parallel to the third axis, the reflection driving part is arranged on one side of the carrier along a direction parallel to the second axis, the reflection driving part includes a rotation magnet arranged on the carrier and a rotation coil arranged on the reflection base, one side of the frame along a direction parallel to the third axis is provided with the second sensing magnet, and the other opposite side is provided with an auxiliary magnet, the auxiliary magnet and the rotation magnet generate an interaction magnetic force between each other to avoid the carrier from deflecting relative to the frame under the magnetic force between the second sensing magnet and the rotation magnet.

38. The reflex drive assembly of claim 21 or 28, wherein: The reflection driving part comprises a first rotation magnet and a first rotation coil for driving the carrier to rotate around the first axis, the first rotation magnet is arranged on the carrier, the first rotation coil is arranged on the reflection base, and a second rotation sensing element opposite to the first rotation magnet is arranged on the reflection base to detect the angle of rotation of the carrier around the first axis.

39. A camera module comprising: The reflection module comprises: a reflection module comprising a reflection element and a reflection driving assembly as claimed in any of claims 21-38; a lens module held on the light reflection path of the reflection module; and an imaging module receiving the light emitted by the lens module to form an image. The reflection module comprises:

40. A reflective module characterized by a reflection element adapted to reflect light propagating in a direction parallel to a first axis to propagate in a direction parallel to a second axis intersecting the first axis; and a reflection driving assembly comprising a reflection base, a carrier, a reflection driving part, and a rotation position sensing part, the carrier is rotationally arranged on the reflection base and is adapted to carry the reflection element, the reflection driving part is adapted to drive the carrier to rotate around the first axis relative to the reflection base and around a third axis perpendicular to the first axis and the second axis, the rotation position sensing part comprises a first sensing magnet and a first rotation sensing element arranged opposite to each other in a direction parallel to the first axis, and a second sensing magnet and a second rotation sensing element arranged opposite to each other in a direction parallel to the first axis, and the first rotation sensing element and the second rotation sensing element are arranged on the side of the reflection base facing the carrier, and the first sensing magnet and the second sensing magnet are arranged on the side of the carrier facing the reflection base, so that the angle of rotation of the carrier around the first axis and the third axis can be detected by the first rotation sensing element and the second rotation sensing element. The first rotation sensing element obtains first magnetic field information of the first sensing magnet, and the second rotation sensing element obtains second magnetic field information of the second sensing magnet, so that the rotation angle of the carrier around the third axis can be calculated by the sum of the first magnetic field information and the second magnetic field information, and the rotation angle of the carrier around the first axis can be calculated by the difference between the first magnetic field information and the second magnetic field information. The first rotation sensing element and the second rotation sensing element are arranged opposite to each other in a direction parallel to the third axis.

41. The reflective module of claim 40, wherein: The first rotation sensing element and the second rotation sensing element have the same sensitivity.

42. The reflective module of claim 40, wherein: The first sensing magnet and the second sensing magnet are multi-pole magnets, each comprising an N-pole region, an S-pole region, and a neutral region between the N-pole region and the S-pole region, and when the carrier is in an initial position, the neutral region of the first sensing magnet is opposite to the first rotation sensing element, and the neutral region of the second sensing magnet is opposite to the second rotation sensing element.

43. The reflective module of claim 40, wherein: ​ 44. The reflective module of any of claims 40-43, wherein: ​ 45. The reflective module of claim 40, wherein: The carrier includes a carrier body, a first carrier side disposed on one side of the carrier body, and a second carrier side disposed on the other opposite side of the carrier body, the carrier body, the first carrier side, and the second carrier side cooperating to form a reflection element accommodating cavity adapted to accommodate the reflection element, wherein the carrier body includes a carrier base extending in a direction perpendicular to the first axis and a third carrier side disposed above the carrier base, the first sensing magnet and the second sensing magnet being spaced apart on the carrier base.

46. The reflective module of claim 45, wherein: The reflection base includes a reflection base and a first reflection base side, a second reflection base side, and a third reflection base side disposed in sequence on three sides of the reflection base, the reflection base being disposed opposite the carrier base, the first rotation sensing element and the second rotation sensing element being disposed on the reflection base, the second reflection base side being disposed opposite the third carrier side, and the reflection driving portion being disposed between the second reflection base side and the third carrier side.

47. The reflective module of claim 40 or 45 or 46, wherein: The reflection driving portion includes a first rotation magnet and a first rotation coil disposed opposite each other in a direction parallel to the second axis, and a second rotation magnet and a second rotation coil disposed opposite each other in a direction parallel to the second axis, the first rotation magnet and the first rotation coil cooperating to drive the carrier to rotate about the first axis, and the second rotation magnet and the second rotation coil cooperating to drive the carrier to rotate about the third axis.

48. The reflective module of claim 40, wherein: The reflection magnetic attraction portion includes a first magnetic attraction yoke and a second magnetic attraction yoke disposed on the reflection base, the first magnetic attraction yoke being disposed opposite the first sensing magnet in a direction parallel to the first axis, and the second magnetic attraction yoke being disposed opposite the second sensing magnet in a direction parallel to the first axis, the reflection magnetic attraction portion being configured to apply a magnetic attraction force to the carrier in a direction parallel to the first axis and toward the reflection base.

49. The reflective module of claim 48, wherein: The first magnetic attraction yoke is provided with a first opening, and the second magnetic attraction yoke is provided with a second opening, the first rotation sensing element being disposed in the first opening, and the second rotation sensing element being disposed in the second opening.

50. The reflective module of claim 49, wherein: In a direction parallel to the first axis, a projection area of a surface of the first sensing magnet facing the first rotation sensing element is greater than a projection area of the first opening, and a projection area of a surface of the second sensing magnet facing the second rotation sensing element is greater than a projection area of the second opening.

51. The reflective module of claim 50, wherein: The conductive insert is arranged on the side of the magnetic yoke away from the carrier, the first rotation sensing element and the second rotation sensing element are fixedly connected with the conductive insert respectively, and the distance between the first rotation sensing element and the second rotation sensing element and the carrier in the direction parallel to the first axis is greater than or equal to the distance between the magnetic yoke and the carrier, or the conductive insert is bent towards the carrier, so that the distance between the first rotation sensing element and the second rotation sensing element and the carrier in the direction parallel to the first axis is less than the distance between the magnetic yoke and the carrier.

52. The reflective module of any of claims 48-51, wherein: A frame is arranged between the carrier and the reflecting base, the carrier is adapted to rotate relative to the frame about the third axis, and the frame is adapted to drive the carrier to rotate relative to the reflecting base about the first axis.

53. The reflective module of claim 52, wherein: One of the reflecting base and the frame is fixedly provided with a rotation shaft support, and the other is provided with a corresponding rotation shaft positioning groove, the rotation shaft support is adapted to be inserted into the rotation shaft positioning groove, the rotation shaft support and the rotation shaft positioning groove cooperatively define the first axis, the first magnetic yoke and the second magnetic yoke are connected through a magnetic attraction connecting portion, and the magnetic attraction connecting portion is provided with a avoiding portion for avoiding the rotation shaft support or the rotation shaft positioning groove.

54. The reflective module of claim 52, wherein: The frame is provided with an avoiding hole penetrating in the direction parallel to the first axis, and the projection of the first sensing magnet and the second sensing magnet in the direction parallel to the first axis is located in the projection of the avoiding hole; the carrier is provided with a mounting groove protruding towards the avoiding hole in the direction parallel to the first axis, and the first sensing magnet and the second sensing magnet are arranged in the mounting groove.

55. A camera module comprising: Comprises: The reflection module as claimed in any one of claims 40-54; A lens module held in the light reflection path of the reflection module; And An imaging module receiving light emitted by the lens module for imaging; Wherein the reflection driving part, the rotation position sensing part in the reflection module and the imaging module are electrically connected through a conductive insert, the conductive insert extends from the lens module to the imaging module in the direction parallel to the second axis based on the reflecting base, and from the two opposite sides of the lens module in the direction of the third axis.

Images