Reflecting module, reflection driving assembly, and camera module

Abstract

Disclosed in the present application are a reflecting module and a camera module. The reflecting module comprises: a reflecting element, which reflects light propagating in the direction of a first shaft to the direction of a second shaft, which intersects the first shaft at a certain angle; and a reflection driving assembly. The reflection driving assembly comprises: a reflecting base; a frame, which carries the reflecting element and can rotate around the first shaft; and a rotating-shaft supporting member and at least two auxiliary balls, which are arranged between the reflecting base and the frame, wherein the first shaft penetrates the rotating-shaft supporting member, and the rotating-shaft supporting member is fixed to the reflecting base or the frame; the at least two auxiliary balls are arranged between at least two auxiliary upper grooves on the frame and at least two auxiliary lower grooves on the reflecting base; and the at least two auxiliary upper grooves or the at least two auxiliary lower grooves are linear grooves, and extend in the tangential direction of a virtual circle which takes the first shaft as the center of the circle.

Description

A reflection module, a reflection drive component and a camera module Technical Field

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

[0002] With the popularity of mobile electronic devices, the technology related to camera modules used in mobile electronic devices to help users capture images has experienced rapid development and progress. Currently, in the market, consumers are increasingly demanding long-range photography capabilities from camera modules configured in mobile electronic devices.

[0003] A camera module with a telephoto camera function requires a longer focal length to capture clear images of distant subjects. However, a longer focal length requires a longer camera module. Therefore, at least one reflective module capable of reflecting light can be incorporated into the camera module to fold the module's optical path, thereby preventing the module from becoming excessively long. A reflective drive assembly can also be incorporated into the reflective module to adjust the module's optical path, further improving its imaging capabilities.

[0004] Accordingly, the present application provides a reflection module and a camera module having the reflection module.

[0005] Summary of the Invention

[0006] One purpose of the present application is to provide a reflection module and a camera module, which overcome the shortcomings of the existing technology, optimize the structure of the reflection module, and improve the imaging quality of the camera module with the reflection module.

[0007] One purpose of the present application is to provide a reflection drive component and a camera module, which overcome the shortcomings of the existing technology, optimize the structure of the reflection drive component, and improve the imaging quality of the camera module having the reflection drive component.

[0008] According to one aspect of the present application, a reflection module is provided, comprising:

[0009] a reflective element configured to reflect light traveling along a first axis in a direction of a second axis intersecting the first axis at a certain angle; and

[0010] A reflection drive assembly, which includes a reflection base, a frame that carries the reflection element and can rotate around the first axis, and a rotating shaft support and at least two auxiliary balls arranged between the reflection base and the frame. The rotating shaft support is passed through the first axis and is fixed to the reflection base or the frame. The at least two auxiliary balls are arranged between the at least two auxiliary upper grooves of the frame and the at least two auxiliary lower grooves of the reflection base. One of the at least two auxiliary upper grooves and the at least two auxiliary lower grooves is a straight groove and extends along the tangent direction of a virtual circle with the first axis as the center.

[0011] In some embodiments, the symmetry axes of at least two of the linear grooves along the length direction are tangent to the virtual circle.

[0012] In some embodiments, the other of the at least two auxiliary upper grooves and the at least two auxiliary lower grooves is a positioning groove for positioning the auxiliary balls.

[0013] In some embodiments, the at least two auxiliary upper grooves are the straight grooves, the at least two auxiliary lower grooves are the positioning grooves, and the maximum gap between the at least two auxiliary balls and the at least two auxiliary lower grooves is smaller than the maximum gap between the at least two auxiliary balls and the at least two auxiliary upper grooves.

[0014] In some embodiments, the initial position of each auxiliary lower groove is projected onto a middle area of ​​the corresponding auxiliary upper groove along the direction of the first axis.

[0015] In some embodiments, the pivot support is fixed to the reflective base of the reflective base, the pivot support protrudes from the top surface of the reflective base facing the frame, the bottom surface of the frame facing the reflective base has a pivot positioning groove, the pivot support is accommodated in the pivot positioning groove and maintains contact with the pivot positioning groove.

[0016] In some embodiments, the reflection drive assembly further includes a carrier and a second support portion disposed between the carrier and the frame, and the reflective element is fixed to the carrier.

[0017] In some embodiments, the second supporting portion includes two rotating shaft balls, the two rotating shaft balls have the same height and are passed through by a third axis perpendicular to the first axis and the second axis, and the carrier can rotate around the third axis relative to the frame.

[0018] In some embodiments, the reflective drive assembly further includes a reflective magnetic attraction portion, and the carrier is supported on the reflective base via the frame by the magnetic attraction of the reflective magnetic attraction portion.

[0019] In some embodiments, viewed along the direction of the first axis, the direction of the magnetic attraction of the reflective magnetic attraction portion intersects with the third axis.

[0020] In some embodiments, the first axis and the third axis do not intersect, and the distance from the rotation shaft support to the third axis is smaller than the distance from the at least two auxiliary balls to the third axis.

[0021] In some embodiments, the reflection drive assembly also includes a reflection drive unit for driving the reflection element to rotate, and the reflection drive unit includes at least two rotating magnets fixed to the carrier and at least two rotating coils fixed to the reflection base, and the at least two rotating magnets are arranged opposite to the at least two rotating coils.

[0022] In some embodiments, the reflection drive component also includes a rotation position sensing unit, which includes a first rotation sensing element and a second rotation sensing element. The rotation position sensing unit obtains the magnetic field change information of the reflection magnetic attraction unit of the reflection drive component and the magnetic field change information of the at least two rotating magnets through the first rotation sensing element and the second rotation sensing element respectively to obtain the posture change information of the reflection element.

[0023] According to another aspect of the present application, it includes:

[0024] A reflection module as described above;

[0025] a lens module, the lens module being held on a light reflection path of the reflection module; and

[0026] An imaging module receives the light emitted by the lens module to perform imaging.

[0027] In the present application, a rotating shaft support is fixed to a reflective base or a frame, and a first axis passing through the rotating shaft support is used as a rotation axis to drive the frame to rotate relative to the reflective base, so that the rotation of the frame is more precise and less likely to deviate. Furthermore, at least two auxiliary balls are arranged between the frame and the reflective base to form a stable support plane, and one of the at least two auxiliary upper grooves formed on the frame and the at least two auxiliary lower grooves formed on the reflective base for accommodating the at least two auxiliary balls is a linear groove and extends along the tangent direction of a virtual circle with the first axis as the center. In this way, the freedom of movement of the at least two auxiliary balls is improved, the friction is reduced, and the wear between the at least two auxiliary balls and the groove wall is reduced, thereby improving the energy conversion efficiency of the reflective drive component. Accordingly, the response speed of the reflective drive component is improved, and the rotation speed and rotation accuracy of the reflective element are improved, ultimately improving the imaging quality of the camera module.

[0028] According to one aspect of the present application, a reflection drive component is provided, comprising:

[0029] reflective base;

[0030] a carrier rotatably disposed on the reflective base; and

[0031] A reflection drive unit, comprising at least one first rotating magnet and at least one first rotating coil for driving the carrier to rotate around a first axis, and at least one second rotating magnet and at least one second rotating coil for driving the carrier to rotate around a third axis perpendicular to the first axis, wherein the first rotating magnet and the first rotating coil are arranged relative to each other along a second axis perpendicular to the first axis and the third axis, and the second rotating magnet and the second rotating coil are also arranged relative to each other along the second axis.

[0032] In some embodiments, the surface of the first rotating magnet facing the first rotating coil has at least two magnetic pole regions arranged along the third axis, and the surface of the second rotating magnet facing the second rotating coil has at least two magnetic pole regions arranged along the first axis.

[0033] In some embodiments, the number of the first rotating magnets is two, the number of the second rotating magnets is one, the number of the first rotating coils is two, the number of the second rotating coils is one, two first rotating magnets are arranged on both sides of one second rotating magnet, and two first rotating coils are arranged on both sides of one second rotating coil.

[0034] In some embodiments, a gap between the first rotating coil and the first rotating magnet is not smaller than a gap between the second rotating coil and the second rotating magnet, and a thickness of the first rotating coil is smaller than a thickness of the second rotating coil.

[0035] In some embodiments, the length direction of the first rotating coil and the length direction of the second rotating coil are perpendicular to each other.

[0036] In some embodiments, the first rotating magnet and the second rotating magnet are fixed to the carrier, and the first rotating coil and the second rotating coil are fixed to the reflective base.

[0037] In some embodiments, the first axis and the third axis do not intersect each other, and the first axis and the third axis are spatially perpendicular to each other.

[0038] In some embodiments, the second axis and the third axis do not intersect each other, and the second axis and the third axis are spatially perpendicular to each other.

[0039] In some embodiments, a vertical distance between the first axis and the center of the first rotating magnet is 2 mm-5.5 mm.

[0040] In some embodiments, the first axis is located on a side of the third axis away from the reflection driving unit.

[0041] In some embodiments, the reflection drive component also includes a first rotation sensing element and a second rotation sensing element for obtaining posture change information of the carrier, the projection of the first rotation sensing element along the direction of the second axis overlaps with the third axis, and the projection of the second rotation sensing element along the direction of the second axis overlaps with the first axis.

[0042] In some embodiments, a top surface of the first rotating magnet has a height lower than a top surface of the second rotating magnet.

[0043] In some embodiments, the reflection drive assembly further includes a frame, a first support portion disposed between the reflection base and the frame, and a second support portion disposed between the carrier and the frame.

[0044] In some embodiments, the reflection drive component also includes a reflection magnetic attraction portion, and the carrier is supported on the reflection base through the frame by the magnetic attraction force of the reflection magnetic attraction portion. When viewed along the direction of the first axis, the direction of the magnetic attraction force of the reflection magnetic attraction portion intersects with the third axis.

[0045] In some embodiments, the reflective magnetic attraction portion includes two first reflective magnetic components and two second reflective magnetic components, the two first reflective magnetic components are respectively fixed to the bottom surface of the carrier, and the two second reflective magnetic components are respectively fixed to the top of the reflective base of the reflective base. Viewed along the direction of the first axis, the two first reflective magnetic components are symmetrically arranged about the third axis.

[0046] In some embodiments, the first support portion includes a rotating shaft support and at least two auxiliary balls, the rotating shaft support is passed through the first shaft and is fixed to the reflective base or the frame, the at least two auxiliary balls are arranged between the at least two auxiliary upper grooves of the frame and the at least two auxiliary lower grooves of the reflective base, and one of the at least two auxiliary upper grooves and the at least two auxiliary lower grooves is a straight groove and extends along the tangent direction of a virtual circle with the first shaft as the center.

[0047] In some embodiments, the at least two auxiliary upper grooves are the straight grooves, and the at least two auxiliary lower grooves are positioning grooves for positioning the auxiliary balls. The initial position of each of the auxiliary lower grooves is projected along the direction of the first axis onto the middle area of ​​the relative auxiliary upper groove, and the maximum gap between the at least two auxiliary balls and the at least two auxiliary lower grooves is smaller than the maximum gap between the at least two auxiliary balls and the at least two auxiliary upper grooves.

[0048] According to another aspect of the present application, a camera module is also provided, comprising:

[0049] A reflection module, comprising any of the above-mentioned reflection drive assemblies and a reflection element installed in the reflection drive assembly;

[0050] a lens module, the lens module being held on a light reflection path of the reflection module; and

[0051] An imaging module receives the light emitted by the lens module to perform imaging.

[0052] In the present application, at least two rotating magnet-rotating coil pairs for driving the carrier to rotate around the first axis and the third axis are arranged on the same side of the carrier. Specifically, this arrangement enables the rotating magnet and the rotating coil to be concentrated on one side along the second axis, so that the reflection drive component on the other side will not cause electromagnetic interference to other devices in the electronic device having the camera module described in the present application.

[0053] In the following description, some additional embodiments and features are set forth, and those skilled in the art will understand after reviewing the specification or learn these embodiments and features through practice of the disclosed subject matter. A further understanding of the features and advantages of the present application may be achieved by reference to the remainder of the specification and drawings, which constitute a part of this application.

[0054] In the following description, some additional embodiments and features are set forth, and those skilled in the art will understand after reviewing the specification or learn these embodiments and features through practice of the disclosed subject matter. A further understanding of the features and advantages of the present application may be achieved by reference to the remainder of the specification and drawings, which constitute a part of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] FIG1 is a schematic cross-sectional view of a camera module according to the present application;

[0056] FIG2 is an exploded schematic diagram of a reflective drive assembly according to the present application;

[0057] 3A and 3B are exploded schematic diagrams of top and bottom views of some components of a reflection drive assembly including a frame and a reflection base according to the present application;

[0058] FIG4 is a schematic diagram of the bottom surface of the frame according to the present application;

[0059] FIG5 is a partial enlarged view of FIG4;

[0060] FIG6 is an exploded schematic diagram of some components including a carrier and a frame in a reflection drive assembly according to the present application;

[0061] FIG7 is a perspective schematic diagram of a carrier according to the present application;

[0062] FIG8 is a cross-sectional schematic diagram of a reflective drive assembly according to the present application;

[0063] FIG9 is a schematic diagram showing a top view of a reflective base along a first axis according to the present application.

[0064] FIG10 is a schematic cross-sectional view of a camera module according to the present application;

[0065] FIG11 is an exploded schematic diagram of a reflection drive assembly according to the present application;

[0066] FIG12A is an exploded schematic diagram of some components including a carrier and a frame in a reflection drive assembly according to the present application;

[0067] FIG12B is a perspective schematic diagram of a carrier and a frame assembled together according to the present application;

[0068] 13A and 13B are exploded top and bottom views of some components of a reflection drive assembly including a frame and a reflection base according to the present application;

[0069] FIG14 is a perspective schematic diagram of a reflective drive unit, a rotation position sensing unit, and a reflective magnetic attraction unit in a reflective drive assembly according to the present application;

[0070] FIG15 is a schematic diagram showing the positional relationship between a reflective drive unit and a rotational position sensing unit in a reflective drive assembly according to the present application;

[0071] FIG16 is a schematic diagram of the bottom surface of the frame according to the present application;

[0072] FIG17 is a partial enlarged view of FIG16;

[0073] FIG18 is a perspective schematic diagram of a carrier according to the present application;

[0074] FIG19 is a cross-sectional schematic diagram of a reflective drive assembly according to the present application;

[0075] FIG20 is a schematic diagram of a reflective base viewed from above along a first axis according to the present application;

[0076] FIG21 is a perspective schematic diagram of a carrier and a frame assembled together according to another modified embodiment of the present application. DETAILED DESCRIPTION

[0077] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0078] In the description of this application, it should be noted that for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, the directions and positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of this application.

[0079] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0080] The terms "comprises" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.

[0081] It should be noted that, as used in this application, the terms "substantially," "approximately," and similar terms are used as terms of approximation, not as terms of degree, and are intended to account for inherent deviations in measurements or calculations that would be recognized by a person of ordinary skill in the art.

[0082] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections, contact connections, or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0083] The terms used in this description are only for the purpose of describing specific embodiments and are not intended to be limiting. As used in the specification and the appended claims, the singular forms "a", "an" and "the" are intended to also encompass the plural form, unless the context clearly indicates otherwise. It will also be understood that the terms "and / or" used herein refer to and encompass any and all possible combinations of one or more items in the items listed in association. It will also be understood that the terms "comprises" and / or "comprising" when used in this specification specify the presence of stated features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or their groupings.

[0084] Figures 1 to 9 show a camera module according to some embodiments of the present application and a reflective module 10 disposed in the camera module. As shown in Figure 1, the camera module includes a reflective module 10, a lens module 20, and an imaging module 30, wherein the reflective module 10 is used to change the propagation direction of light from the object to be photographed so that the light points to the lens module 20, the lens module 20 is used to converge the light on the imaging module 30, and the imaging module 30 is used to output the resulting image. In other words, the reflective module 10 deflects the light from the object to be photographed, the lens module 20 is held on the light reflection path of the reflective module 10 and receives the light from the reflective module 10, and the imaging module 30 is held on the light propagation path of the lens module 20 and receives the light emitted by the lens module 20 for imaging. In one example, the reflective module 10, the lens module 20, and the imaging module 30 are arranged in sequence along the light propagation direction, and the reflective module 10 and the imaging module 30 are respectively fixed on both sides of the lens module 20.

[0085] Accordingly, the reflection module 10 includes a reflection drive assembly 12 and a reflection element 11 installed in the reflection drive assembly 12, wherein the reflection element 11 is suitable for reflecting light to fold the imaging optical path of the camera module. In one example, the reflection element 11 is suitable for deflecting the incident light at a certain angle and then emitting it to the lens module 20. Specifically, the angle can be 90°. In other words, the reflection element 11 reflects the light propagating along the direction of the first axis Y to the direction of the second axis X that intersects the first axis Y at a certain angle. The angle between the first axis Y and the second axis X can be 90°. Among them, the first axis Y is the incident light axis of the reflection module 10, that is, the incident light axis of the camera module; the second axis X is the exit light axis of the reflection module 10. When the angle between the first axis Y and the second axis X is 90°, the first axis Y is perpendicular to the second axis X. It should be understood that, taking into account manufacturing tolerances, the angle at which the reflection element 11 deflects the light may have an error of less than 1°.

[0086] In a specific embodiment, the reflection drive assembly 12 is suitable for driving the reflection element 11 to move, thereby changing the propagation path of the light, and then realizing the optical image stabilization or camera angle adjustment function of the camera module. The reflection element 11 can be implemented as a prism (such as a prism) or a reflector. When the reflection element 11 is implemented as a prism, the reflection element 11 includes a light incident surface 17, a light reflecting surface 18 and a light exit surface 19, and the light incident surface 17 and the light exit surface 19 are perpendicular to each other and the light reflecting surface 18 is inclined at a 45° angle to the light incident surface 17 and the light exit surface 19, so that the light can make a 90° turn at the light reflecting surface 18. When the reflection element 11 is implemented as a reflector, the reflection element 11 only includes a light reflecting surface, which is inclined at a 45° angle to the incident light and the exit light.

[0087] The lens module 20 includes an optical lens 21. The optical axis of the optical lens 21 is the optical axis of the lens module 20. The optical axis of the optical lens 21 is arranged along the direction of the second axis X, so that the light reflected by the reflection module 10 is incident on the optical lens 21 along the direction of the second axis X and is transmitted to the imaging module 30 through the optical lens 21. In one example, the optical lens 21 has a fixed focal length, and the spacing between the optical lenses in the optical lens 21 is fixed and cannot be adjusted. However, the optical lens 21 as a whole can be driven to move along the direction of the optical axis of the optical lens 21 to achieve a focusing function or move along a direction perpendicular to the optical axis of the optical lens 21 to achieve an optical image stabilization function. In another example, the optical lens 21 has a variable focal length, that is, the focal length of the lens module 20 is variable. The optical lens 21 includes at least one fixed group 211 and at least one movable group 212. The distance between the fixed group 211 and the imaging module 30 along the optical axis of the optical lens 21 is fixed, and the distance between the movable group 212 and the fixed group 211 or the imaging module 30 along the optical axis of the optical lens 21 is adjustable, thereby adjusting the focal length of the optical lens 21. Specifically, the optical lens 21 includes a fixed group 211 and a movable group 212. The movable group 212 is disposed between the fixed group 211 and the imaging module 30. The fixed group 211 includes a fixed lens barrel 2111 and at least one fixed lens 2112 housed therein. The movable group 212 includes a movable lens barrel 2121 and at least one movable lens 2122 housed therein. It should be understood that the number of fixed groups 211 and movable groups 212 can be more than one, depending on specific needs.

[0088] Furthermore, the lens module 20 also includes a lens drive assembly 22. The optical lens 21 is mounted within the lens drive assembly 22. The lens drive assembly 22 drives the optical lens 21 to move, changing the propagation path of light, thereby achieving functions such as anti-shake, focus, and zoom. It should be understood that the lens drive assembly 22 can drive the entire optical lens 21 to achieve focus or anti-shake functions; the lens drive assembly 22 can also drive the movement of a portion of the optical lens 21. For example, the lens drive assembly 22 can drive the movement of the movable group 212 of the optical lens 21 to achieve zoom or anti-shake functions.

[0089] The imaging module 30 includes a photosensitive component 31 and a filter component 32. The photosensitive component 31 includes a photosensitive circuit board 312, a photosensitive chip 311 mounted on the photosensitive circuit board 312, and electronic components (not shown). The photosensitive chip 311 is fixed to the photosensitive circuit board 312 by, for example, bonding, and is electrically connected to the photosensitive circuit board 312 by, for example, wire bonding. After the photosensitive chip 311 receives light and forms an image, it is electrically connected to the mobile electronic device via the photosensitive circuit board 312. The filter component 32 includes a filter bracket 322 and a filter element 321 mounted on the filter bracket 322. The filter bracket 322 is fixed to the photosensitive circuit board 312 by, for example, bonding. The filter element 321 is fixed to the filter bracket 322 by, for example, bonding, so that it is held in the light sensing path of the photosensitive chip 311. The filter element 321 filters the light entering the photosensitive chip 311.

[0090] In some examples of the present application, the imaging module 30 and the lens module 20 are fixed to each other, and the reflective module 10 and the lens module 20 are fixed to each other, thereby forming a periscope camera module with a folded optical path. It should be understood that the mutual fixation between the reflective module 10 and the lens module 20 can be bonded together using an adhesive medium, for example: the reflective base 121 of the reflective module 10 and the lens base 221 of the lens module 20 are bonded together using an adhesive medium. Alternatively, the reflective module 10 and the lens module 20 can be fixed together using an integral molding method, for example: the reflective base 121 of the reflective module 10 and the lens base 221 of the lens module 20 are fixed together using an integral molding method. In other words, the reflective module 10 and the lens module 20 use the same base, and the reflective element 11 and the optical lens 21 are installed in the same base, forming an integrated periscope camera module.

[0091] As previously mentioned, the reflective element 11 is adapted to deflect the incident light at a certain angle before emitting it, thereby achieving a deflection in the imaging optical path. Further providing a reflective drive assembly 12 allows the reflective drive assembly 12 to drive the reflective element 11 to rotate, thereby achieving the optical image stabilization function or the camera angle adjustment function of the camera module. To this end, the present application provides a reflective drive assembly 12 adapted to drive the reflective element 11 to rotate.

[0092] As shown in Figures 2 to 9, the reflective drive assembly 12 includes a reflective base 121, a frame 123 that supports the reflective element 11 and is capable of rotating about a first axis Y, and a first support portion 122 disposed between the reflective base 121 and the frame 123. The first support portion 122 includes a rotation shaft support 1221 and at least two auxiliary balls 1222. The rotation shaft support 1221 passes through the first axis Y and is fixed to the reflective base 121 or the frame 123. The at least two auxiliary balls 1222 are disposed between at least two auxiliary upper grooves 1235 of the frame 123 and at least two auxiliary lower grooves 1216 of the reflective base 121. Here, it should be understood that the reflective element 11 can be directly set on the frame 123, so that the frame 123 directly supports the reflective element 11; other elements can also be further set between the reflective element 11 and the frame 123, so that the frame 123 indirectly supports the reflective element 11. In other words, the frame 123 indirectly supports the reflective element 11 through other elements and is also regarded as supporting the reflective element 11 in this application.

[0093] Specifically, as shown in Figures 3A and 3B, the reflective base 121 includes a reflective substrate 1211 and a first reflective base side portion 1212, a second reflective base side portion 1213 and a third reflective base side portion 1214 that surround the reflective substrate 1211 and are fixed on the reflective substrate 1211, wherein the first reflective base side portion 1212 and the third reflective base side portion 1214 are relatively arranged on both sides of the reflective substrate 1211, the second reflective base side portion 1213 connects the first reflective base side portion 1212 and the third reflective base side portion 1214, and the second reflective base side portion 1213 is located on the side away from the light emitting from the reflective module 10, that is, the second reflective base side portion 1213 is located on the side away from the lens module 20. In this way, the reflective base 121 forms an installation space and has an opening toward the direction in which light enters the reflective module 10 and an opening toward the direction in which light exits the reflective module 10, so that the frame 123, the first support portion 122 and the reflective element 11 can all be accommodated in the installation space of the reflective base 121, and the reflective element 11 can reflect light propagating in the direction of the first axis Y to the direction of the second axis X and propagate to the lens module 20 through the above two openings.

[0094] As previously described, a first support portion 122 is provided between the reflective base 121 and the frame 123. The frame 123 is rotatably supported above the reflective substrate 1211 of the reflective base 121 via the first support portion 122. The first support portion 122 includes a rotation shaft support 1221 and at least two auxiliary balls 1222. In one example, the rotation shaft support 1221 is fixed to the reflective substrate 1211 of the reflective base 121. The rotation shaft support 1221 protrudes from the top surface of the reflective substrate 1211 facing the frame 123. The bottom surface of the frame 123 facing the reflective substrate 1211 includes a rotation shaft positioning groove 1234. The rotation shaft support 1221 is received in and maintains contact with the rotation shaft positioning groove 1234. The rotation shaft support 1221 and the rotation shaft positioning groove 1234 are arranged relative to each other along the direction of the first axis Y. Specifically, the position of the rotation shaft positioning groove 1234 corresponds to the position of the rotation shaft support 1221. The first axis Y passes through both the rotation shaft positioning groove 1234 and the rotation shaft support 1221. The shape of the rotation shaft support 1221 matches the shape of the rotation shaft positioning groove 1234. The rotation shaft support 1221 and the rotation shaft positioning groove 1234 limit each other. The frame 123 is restricted from rotating about the first axis Y relative to the reflective base 121 by the limiting relationship between the rotation shaft positioning groove 1234 and the rotation shaft support 1221. In this case, the first axis Y is the rotation axis of the frame 123, and the first axis Y coincides with the rotation axis of the frame 123. The frame 123 and the reflective element 11 supported by the frame 123 rotate about the first axis Y. Accordingly, the rotation shaft support 1221 has an arcuate top surface. For example, the rotation shaft support 1221 protrudes from the reflective base 1211 in a hemispherical shape. Of course, the top surface of the hemispherical pivot support 1221 can also have a flat surface, thereby reducing the difficulty of molding the pivot support 1221. In this example, the pivot support 1221 is fixed to the reflective base 1211 of the reflective base 121, making it difficult for the frame 123 to deflect during rotation. The matching shape of the pivot positioning groove 1234 of the frame 123 and the pivot support 1221 further restricts the frame 123 to rotation only about the first axis Y passing through the pivot support 1221, making the rotation of the reflective element 11 less susceptible to external influences. It is worth noting that since the pivot support 1221 is fixed and immovable, the shape requirements for the pivot positioning groove 1234 are reduced. Maintaining at least three point contacts or line contacts between the pivot positioning groove 1234 and the pivot support 1221 ensures that the rotation axis of the frame 123 does not deflect during rotation relative to the reflective base 121. Here, in a specific example, line contact refers to circular line contact.

[0095] Furthermore, in one specific example, the hinge support 1221 is made of metal and is embedded in the reflective substrate 1211 via an insert molding process, thereby maintaining the durability of the hinge support 1221. However, when the hinge positioning groove 1234 is formed of plastic or resin, the metal hinge support 1221 is likely to cause a dent in the hinge positioning groove 1234, thereby affecting the rotation of the frame 123. Therefore, the material of the hinge support 1221 and the hinge positioning groove 1234 can be made consistent, for example, by making both the hinge support 1221 and the hinge positioning groove 1234 metal, plastic, or resin, thereby reducing the likelihood of a dent in the hinge positioning groove 1234. Specifically, the hinge support 1221 is integrally formed onto the top surface of the reflective substrate 1211 via an injection molding process, thereby being fixed to the top surface of the reflective substrate 1211.

[0096] It should be understood that in other examples of the present application, the rotation shaft support member 1221 may also be fixed to the bottom surface of the frame 123, and accordingly, the top surface of the reflective base 1211 has a corresponding rotation shaft positioning groove 1234. In other words, the rotation shaft support member 1221 is fixed to one of the reflective base 121 and the frame 123, and the other of the reflective base 121 and the frame 123 has a corresponding rotation shaft positioning groove 1234 on the side facing the rotation shaft support member 1221.

[0097] Furthermore, the first support portion 122 also includes at least two auxiliary balls 1222 for assisting the shaft support member 1221 in supporting the frame 123. The shaft support member 1221 and the at least two auxiliary balls 1222 form a support plane for supporting the frame 123, thereby preventing the frame 123 from tilting unnecessarily during rotation. It should be understood that, in one example, the height of the at least two auxiliary balls 1222 protruding from the reflective substrate 1211 is equal to the height of the shaft support member 1221 protruding from the reflective substrate 1211, thereby providing a horizontal support plane for the shaft support member 1221 and the at least two auxiliary balls 1222. The diameter of the auxiliary balls 1222 ranges from 0.6 mm to 1.2 mm, and in one specific example, the diameter of the auxiliary balls 1222 is 0.9 mm.

[0098] To restrict the position of at least two auxiliary balls 1222 between the frame 123 and the reflective base 121, the bottom surface of the frame 123 has at least two auxiliary upper grooves 1235, and the top surface of the reflective base 1211 has at least two auxiliary lower grooves 1216. The at least two auxiliary upper grooves 1235 and the at least two auxiliary lower grooves 1216 correspond to each other and respectively form at least two spaces for the balls to move. The at least two auxiliary balls 1222 are positioned between the at least two auxiliary upper grooves 1235 of the frame 123 and the at least two auxiliary lower grooves 1216 of the reflective base 121. In one example, the number of auxiliary upper grooves 1235 and the number of auxiliary lower grooves 1216 are equal to the number of auxiliary balls 1222, and only one auxiliary ball 1222 can be accommodated between each auxiliary upper groove 1235 and each auxiliary lower groove 1216. For example, as shown in FIG. 3A of the present application, the number of auxiliary balls 1222 is two, and accordingly, the number of auxiliary upper grooves 1235 and the number of auxiliary lower grooves 1216 are also two.

[0099] Furthermore, the frame 123 is also embedded with an auxiliary ball support metal part 1236, which is embedded in the frame 123 through an insert injection molding process and exposed as the bottom of the auxiliary upper groove 1235, thereby strengthening the structure of the frame 123 while making the auxiliary upper groove 1235 have a harder bottom.

[0100] In the present application, the limiting relationship between the rotational axis support member 1221 and the rotational axis positioning groove 1234 provides the rotational axis for the frame 123. The at least two auxiliary balls 1222 serve only to support the frame 123 on the reflective base 121. To reduce the resistance generated by the auxiliary balls 1222, one of the at least two auxiliary upper grooves 1235 and the at least two auxiliary lower grooves 1216 is a linear groove extending along a tangent to a virtual circle centered on the first axis Y. The auxiliary balls 1222 are loosely accommodated in the linear grooves. In a minimum state, the auxiliary balls 1222 only make contact with the linear groove at one point, and in a maximum state, the auxiliary balls 1222 only make contact with the linear groove at three points. In this manner, during the rotation of the frame 123 relative to the reflective base 121, the freedom of movement of the at least two auxiliary balls 1222 is improved, friction is reduced, and wear between the at least two auxiliary balls 1222 and the groove wall is reduced, thereby improving the energy conversion efficiency of the reflective drive assembly 12. Accordingly, the response speed of the reflective drive assembly 12 is improved. It should be understood that a linear groove refers to a groove extending in a straight line. In this application, the linear groove extends in a straight line along a tangent direction of a virtual circle with the first axis Y as the center, and the symmetry axis of the at least two linear grooves along the length direction is tangent to the virtual circle. In a specific example, the symmetry axis of the at least two auxiliary upper grooves 1235 or the at least two auxiliary lower grooves 1216, which are linear grooves, along the length direction is tangent to the virtual circle with the first axis Y as the center. In other words, one of the at least two auxiliary upper grooves 1235 and the at least two auxiliary lower grooves 1216 is a linear groove having a symmetry axis tangent to the virtual circle with the first axis Y as the center. Furthermore, the linear groove has two long groove walls and two short groove walls. The two long groove walls are arranged opposite each other, and the two short groove walls are respectively connected to the two long groove walls. The two long groove walls are parallel to each other and extend along straight lines. The connection between the two short groove walls and the two long groove walls can be an arc connection, thereby reducing the difficulty of forming the linear groove. Accordingly, the linear groove has a rounded rectangular shape.

[0101] Furthermore, the other of the at least two auxiliary upper grooves 1235 and the at least two auxiliary lower grooves 1216 may also be a linear groove. However, if both the at least two auxiliary upper grooves 1235 and the at least two auxiliary lower grooves 1216 are linear grooves, the position of the auxiliary ball 1222 may be uncontrolled when the drive frame 123 rotates relative to the reflective base 121, resulting in the auxiliary ball 1222 being stuck in the auxiliary upper groove 1235 and the auxiliary lower groove 1216, thus affecting the rotation of the frame 123 relative to the reflective base 121 about the first axis Y. For example, during the driving process, when the auxiliary ball 1222 is located on the side of the auxiliary lower groove 1216 for accommodating the auxiliary ball 1222 closest to the rotation direction of the frame 123 and on the side of the auxiliary upper groove 1235 for accommodating the auxiliary ball 1222 farthest from the rotation direction of the frame 123, and the frame 123 continues to be driven to rotate relative to the reflective base 121, the auxiliary ball 1222 is clamped by the groove wall of the corresponding auxiliary upper groove 1235 and the groove wall of the auxiliary lower groove 1216, making it difficult for the auxiliary ball 1222 to roll or translate, thereby affecting the rotation of the frame 123. To solve this problem, the length of the auxiliary upper groove 1235 or the auxiliary lower groove 1216 can be increased. However, increasing the length of the auxiliary upper groove 1235 or the auxiliary lower groove 1216 will occupy more space in the frame 123 or the reflective base 1211, resulting in an increase in the size of the frame 123 or the reflective base 1211, and thus an increase in the size of the reflective drive assembly 12.

[0102] Therefore, in one example of the present application, the other of the at least two auxiliary upper grooves 1235 and the at least two auxiliary lower grooves 1216 is a positioning groove for positioning the auxiliary ball 1222, and the auxiliary ball 1222 is tightly accommodated in the positioning groove. It is worth mentioning that being tightly accommodated in the positioning groove does not mean that there is no gap between the auxiliary ball 1222 and the positioning groove. There can still be a certain gap between the auxiliary ball 1222 and the positioning groove so that the auxiliary ball 1222 can still roll or translate in the positioning groove while being positioned by the positioning groove. Specifically, tightly accommodated means that when the auxiliary ball 1222 is centered in the positioning groove, the minimum distance between the auxiliary ball 1222 and the side wall of the positioning groove is less than 0.1 mm. Preferably, the minimum distance is less than 0.05 mm. Accordingly, loosely fitting accommodation means that when the auxiliary balls 1222 are centrally disposed in the linear groove, the minimum distance between the auxiliary balls 1222 and the long side groove walls is greater than 0.1 mm, preferably greater than 0.15 mm, and the minimum distance between the auxiliary balls 1222 and the short side groove walls is at least 0.2 mm greater than the travel range of the auxiliary balls 1222. Accordingly, the maximum gap between the at least two auxiliary balls 1222 and the at least two auxiliary lower grooves 1216 is smaller than the maximum gap between the at least two auxiliary balls 1222 and the at least two auxiliary upper grooves 1235.

[0103] It should be understood that in a specific example, at least two auxiliary lower grooves 1216 are straight grooves and extend along the tangent direction of a virtual circle with the first axis Y as the center, and at least two auxiliary upper grooves 1235 are positioning grooves for positioning the auxiliary balls 1222. At least two auxiliary balls 1222 are loosely accommodated in at least two auxiliary lower grooves 1216, and at least two auxiliary balls 1222 are tightly accommodated in at least two auxiliary upper grooves 1235. At this time, at least two auxiliary balls 1222 are respectively positioned by at least two auxiliary upper grooves 1235. In another specific example, the at least two auxiliary upper grooves 1235 are linear grooves extending along a tangent direction of a virtual circle centered on the first axis Y. The at least two auxiliary lower grooves 1216 are positioning grooves for positioning the auxiliary balls 1222. The at least two auxiliary balls 1222 are loosely accommodated in the at least two auxiliary upper grooves 1235, while the at least two auxiliary balls 1222 are tightly accommodated in the at least two auxiliary lower grooves 1216. In this case, the at least two auxiliary balls 1222 are respectively positioned by the at least two auxiliary lower grooves 1216. From the perspective of the rotation of the drive frame 123 relative to the reflective base 121, there is no obvious advantage or disadvantage between the two specific examples. However, considering the assembly process, the linear grooves cannot position the balls, and the auxiliary balls 1222 must first be placed in the positioning grooves during installation. Therefore, to simplify the assembly process and avoid the step of flipping the semi-finished reflective drive assembly during assembly of the auxiliary balls 1222, it is preferred that the at least two auxiliary lower grooves 1216 are positioning grooves for positioning the auxiliary balls 1222. Accordingly, the gap between the at least two auxiliary balls 1222 and the at least two auxiliary lower grooves 1216 is smaller than the gap between the at least two auxiliary balls 1222 and the at least two auxiliary upper grooves 1235 .

[0104] Further referring to Figures 4 and 5 , reference numeral 1216′ denotes the projection of the auxiliary lower groove 1216 onto the bottom surface of the frame 123 along the first axis Y, C denotes a virtual circle centered on the first axis Y, and A denotes the axis of symmetry of the auxiliary upper groove 1235 along its length. In this example, the number of auxiliary balls 1222, auxiliary upper grooves 1235, and auxiliary lower grooves 1216 are all two. The first support portion 122 includes two auxiliary balls 1222, the bottom surface of the frame 123 has two auxiliary upper grooves 1235, and the reflective substrate 1211 has two auxiliary lower grooves 1216. The two auxiliary upper grooves 1235 are symmetrically formed on the bottom surface of the frame 123, and the two auxiliary lower grooves 1216 are symmetrically formed on the top surface of the reflective substrate 1211. The two auxiliary upper grooves 1235 are disposed opposite the two auxiliary lower grooves 1216, forming two spaces for the ball to move. The two auxiliary upper grooves 1235 are linear grooves, and the two auxiliary lower grooves 1216 are positioning grooves. A virtual circle C is drawn with the first axis Y as the center. The two auxiliary upper grooves 1235 extend along the tangent direction of the virtual circle C. The initial position of each auxiliary lower groove 1216 is projected onto the middle area of ​​the corresponding auxiliary upper groove 1235 along the direction of the first axis Y. It should be understood that the initial position of the two auxiliary lower grooves 1216 refers to the position of the two auxiliary lower grooves 1216 when the angles at which the frame 123 can rotate in two opposite directions relative to the reflective base 121 are equal. In this way, when the reflective drive assembly 12 drives the frame 123 and the reflective element 11 to rotate about the first axis Y, the reflective element 11 can have a larger rotation angle in both directions. In a specific example, the center points of the two auxiliary upper grooves 1235 are located on the virtual circle C with the first axis Y as the center.

[0105] Specifically, each of the two auxiliary upper grooves 1235 has a symmetry axis A that is tangent to a virtual circle C centered on the first axis Y along its length. The two auxiliary balls 1222 are loosely accommodated in each of the two auxiliary upper grooves 1235. When the auxiliary balls 1222 are centrally disposed in the auxiliary upper grooves 1235, the minimum distance L2 between the auxiliary balls 1222 and the long side walls of the auxiliary upper grooves 1235 is greater than 0.1 mm, preferably greater than 0.15 mm. The minimum distance L3 between the auxiliary balls 1222 and the short side walls of the auxiliary upper grooves 1235 is at least 0.2 mm greater than the travel range of the auxiliary balls 1222. The travel range of the auxiliary balls 1222 is related to the angle at which the frame 123 can rotate about the first axis Y and the distance between the auxiliary balls 1222 and the first axis Y. Furthermore, in one example, the angle α between the first axis Y and the perpendiculars to the two auxiliary upper grooves 1235 ranges from 80° to 100°, thereby ensuring that the auxiliary balls 1222 provide better support during the rotation of the frame 123 and preventing the size of the frame 123 from being excessively enlarged due to the provision of the auxiliary upper grooves 1235. In a specific example, the angle α between the first axis Y and the perpendiculars to the longitudinal axis of symmetry A of the two auxiliary upper grooves 1235 is 90°.

[0106] The two auxiliary lower grooves 1216 correspond to the two auxiliary upper grooves 1235, respectively. The two auxiliary balls 1222 are tightly accommodated in the two lower auxiliary grooves 1216. When the auxiliary balls 1222 are centrally positioned in the lower auxiliary grooves 1216, the minimum distance L1 between the auxiliary balls 1222 and the sidewalls of the lower auxiliary grooves 1216 is less than 0.1 mm. Preferably, this minimum distance L1 is less than 0.05 mm. Accordingly, the maximum gap between the two auxiliary balls 1222 and the two lower auxiliary grooves 1216 is less than the maximum gap between the two auxiliary balls 1222 and the two upper auxiliary grooves 1235. It should be understood that tight fit only means that when the auxiliary ball 1222 is arranged between the auxiliary upper groove 1235 and the auxiliary lower groove 1216, the gap between the auxiliary ball 1222 and the auxiliary lower groove 1216 is smaller than the gap between the auxiliary ball 1222 and the auxiliary upper groove 1235, so that the auxiliary lower groove 1216 can play a positioning role, and does not mean that the auxiliary ball 1222 is stuck in the auxiliary lower groove 1216.

[0107] It should be understood that the tight fit between the auxiliary lower groove 1216 and the auxiliary ball 1222 allows the auxiliary ball 1222 to be positioned relative to the frame 123. Therefore, when the frame 123 rotates relative to the reflective base 121, the auxiliary ball 1222 is not positioned in an unfavorable position, thereby preventing the auxiliary ball 1222 from becoming stuck. Therefore, this configuration has obvious advantages. It should also be understood that more auxiliary balls 1222, as well as the auxiliary upper groove 1235 and the auxiliary lower groove 1216 for accommodating the auxiliary balls 1222, can be provided, for example, three, four, or more, and this application is not limited thereto.

[0108] As further shown in Figure 6, the reflection drive assembly 12 also includes a carrier 125 and a second support portion 124 disposed between the carrier 125 and the frame 123. The reflective element 11 is fixed to the carrier 125, and the frame 123 indirectly supports the reflective element 11 through the carrier 125. In this way, when the frame 123 is driven to rotate relative to the reflective base 121 around the first axis Y, the carrier 125 will also rotate relative to the reflective base 121 around the first axis Y along with the frame 123. The carrier 125 is rotatably supported above the frame 123 by the second support portion 124. Specifically, the carrier 125 can rotate relative to the frame 123 around a third axis Z perpendicular to the first axis Y and the second axis X. In this way, the reflective element 11 can rotate around the first axis Y and the third axis Z, thereby adjusting the angles of light incident on and exiting the reflective element 11 in two directions, and realizing the two-way anti-shake function of the camera module or the two-way camera angle adjustment function.

[0109] Specifically, the frame 123 includes a frame body 1231 and a first frame side portion 1232 and a second frame side portion 1233 fixed to either side of the frame body 1231 along the direction of the third axis Z. In one example, the first frame side portion 1232 and the second frame side portion 1233 are fixed to the frame body 1231 by integral molding. More specifically, the first frame side portion 1232 and the second frame side portion 1233 extend from either side of the frame body 1231 toward the carrier 125, and the top surfaces of the first frame side portion 1232 and the second frame side portion 1233 facing the carrier 125 are respectively recessed downward to form a first rotation shaft lower groove 12321 and a second rotation shaft lower groove 12331. The second support portion 124 includes two rotation shaft balls 1241, which are respectively accommodated in the first rotation shaft lower groove 12321 and the second rotation shaft lower groove 12331. The two rotating shaft balls 1241 have the same height and are passed through by a third axis Z perpendicular to the first axis Y and the second axis X. This allows the carrier 125 supported by the two rotating shaft balls 1241 to rotate relative to the frame 123 about the third axis Z. The first frame side portion 1232 and the second frame side portion 1233 extend from either side of the frame body 1231 toward the carrier 125, thereby adjusting the height of the two rotating shaft balls 1241 via the first rotating shaft lower groove 12321 and the second rotating shaft lower groove 12331, respectively, thereby controlling the height of the third axis Z passing through the two rotating shaft balls 1241. It is worth noting that, in one example, by adjusting the height of the first frame side portion 1232 and the second frame side portion 1233 extending upward from the frame body 1231 and their position in the direction of the second axis X, the third axis Z passes through or is close to the center of gravity of the reflective element 11, thereby maintaining the stability of the reflective element 11 during rotation about the third axis Z.

[0110] As shown in Figures 6 and 7, the carrier 125 includes a carrier body 1251 and a first carrier side portion 1252 and a second carrier side portion 1253 fixed to both sides of the carrier body 1251 along the direction of the third axis Z. In one example, the first carrier side portion 1252 and the second carrier side portion 1253 are fixed to the carrier body 1251 by integral molding. More specifically, the carrier body 1251 has an inclined mounting surface, and the first carrier side portion 1252 and the second carrier side portion 1253 are fixed to both sides of the carrier body 1251 and form a reflective element accommodating cavity 1254 with the carrier body 1251 having the inclined mounting surface. The reflective element 11 is fixed to the carrier 125 by being mounted in the reflective element accommodating cavity 1254.

[0111] As shown in Figures 3A, 6, 7 and 8, in order to respectively accommodate the protruding first frame side portion 1232 and the second frame side portion 1233, the outer sides of the first carrier side portion 1252 and the second carrier side portion 1253, that is, the side away from the reflective element 11, are respectively recessed to form a first carrier side recess 12521 and a second carrier side recess 12531, so that the first frame side portion 1232 can extend into the first carrier side recess 12521 of the first carrier side portion 1252, and the second frame side portion 1233 can extend into the second carrier side recess 12531 of the second carrier side portion 1253. Furthermore, the first carrier side portion 1252 has a first rotation shaft upper groove 12522 at a position facing the first rotation shaft lower groove 12321, and the second carrier side portion 1253 has a second rotation shaft upper groove 12532 at a position facing the second rotation shaft lower groove 12331. The first rotation shaft upper groove 12522 and the first rotation shaft lower groove 12321 form a ball movement space, and the second rotation shaft upper groove 12532 and the second rotation shaft lower groove 12331 also form a ball movement space. Two rotation shaft balls 1241 are respectively disposed between the first rotation shaft upper groove 12522 and the first rotation shaft lower groove 12321, and between the second rotation shaft upper groove 12532 and the second rotation shaft lower groove 12331. In this manner, the two rotation shaft balls 1241 are respectively disposed between the first carrier side portion 1252 and the first frame side portion 1232, and between the second carrier side portion 1253 and the second frame side portion 1233. It should be understood that the two rotating shaft balls 1241 can be rollably arranged between the carrier 125 and the frame 123 , or the two rotating shaft balls 1241 can be fixed to the carrier 125 or the frame 123 .

[0112] Specifically, in one example, the first shaft lower groove 12321 and the second shaft lower groove 12331 each maintain at least three-point contact or line contact with the two shaft balls 1241, thereby defining the two shaft balls 1241 in the first shaft lower groove 12321 and the second shaft lower groove 12331. One of the first shaft upper groove 12522 and the second shaft upper groove 12532 maintains at least three-point contact or line contact with one of the shaft balls 1241, while the other of the first shaft upper groove 12522 and the second shaft upper groove 12532 maintains only two-point contact with the other shaft ball 1241. For example, the first shaft upper groove 12522 maintains at least three-point contact or line contact with one of the shaft balls 1241, while the second shaft upper groove 12532 maintains only two-point contact with the other shaft ball 1241. In this way, the carrier 125 can be positioned on the frame 123 by one of the rotational shaft balls 1241, while the other rotational shaft ball 1241 does not play a positioning role. Therefore, when the carrier 125 is supported on the frame 123 by the two rotational shaft balls 1241, it is not difficult for the two rotational shaft balls 1241 to be respectively positioned between the first rotational shaft upper groove 12522 and the first rotational shaft lower groove 12321, and between the second rotational shaft upper groove 12532 and the second rotational shaft lower groove 12331 due to manufacturing tolerances of the components. In a specific example, the line contact refers to circular line contact.

[0113] Continuing with reference to Figures 3A and 7, the first shaft lower groove 12321, the second shaft lower groove 12331 and the first shaft upper groove 12522 are all truncated cone-shaped grooves, and the second shaft upper groove 12532 is a groove extending along the direction of the third axis Z and having a trapezoidal cross-section, so that one of the shaft balls 1241 maintains line contact with the first shaft lower groove 12321 and the first shaft upper groove 12522 respectively, and the other shaft ball 1241 maintains line contact with the second shaft lower groove 12331 and maintains two-point contact with the second shaft upper groove 12532.

[0114] Accordingly, in the present application, the two rotating shaft balls 1241 and at least two auxiliary balls 1222 are respectively arranged at different heights, but the two rotating shaft balls 1241 and at least two auxiliary balls 1222 can be arranged in the reflection drive component 12 through the height direction, that is, the direction of the first axis Y, which makes the assembly of the reflection drive component 12 simple, and only the components need to be stacked along the height direction.

[0115] In one example of the present application, as shown in FIG6 , a carrier buffer 1257 is further fixed to the surface of the carrier 125. Specifically, the carrier buffer 1257 is fixed to the surface of the carrier 125 through a process such as overmolding, thereby providing a buffering effect when the carrier 125 collides with the frame 123 or the reflective base 121. The carrier buffer 1257 can be made of a flexible material such as silicone.

[0116] It is worth mentioning that, as mentioned above, considering that the reflective base 121 has an opening facing the direction of the light emitting reflective module 10, in order to prevent the carrier 125 from exceeding the rotation range or falling off when rotating around the third axis Z, the frame 123 also includes two rotation stops 1237. The two rotation stops 1237 extend integrally from both sides of the frame body 1231 along the direction of the second axis X to the bottom of the first carrier side 1252 and the second carrier side 1253, so that the projections of the two rotation stops 1237 in the direction of the first axis Y fall on the first carrier side 1252 and the second carrier side 1253, respectively. When the rotation angle of the carrier 125 exceeds the design angle, the carrier 125 can be stopped by the two rotation stops 1237 and stop rotating.

[0117] Furthermore, the reflection drive assembly 12 also includes a reflection drive unit 126 for driving the reflection element 11 to rotate. The reflection drive unit 126 includes at least two rotating magnets fixed to the carrier 125 and at least two rotating coils fixed to the reflection base 121. The at least two rotating magnets are arranged opposite to the at least two rotating coils, so that the at least two rotating magnets are driven to move after the at least two rotating coils are energized. Correspondingly, the reflection drive assembly 12 can also include a reflection drive circuit, which is electrically connected to the at least two rotating coils and provides a driving current. It should be understood that the reflection drive circuit can be implemented as a flexible circuit board attached to the reflection base 121 or a conductive metal insert embedded in the reflection base 121.

[0118] Specifically, as shown in Figures 3A, 3B and 6, at least two rotating magnets include two first rotating magnets 1261 fixed to the first carrier side 1252 and the second carrier side 1253 and a second rotating magnet 1263 fixed to the carrier body 1251, and at least two rotating coils include two first rotating coils 1262 fixed to the first reflection base side 1212 and the third reflection base side 1214 and a second rotating coil 1264 fixed to the second reflection base side 1213. Among them, the two first rotating magnets 1261 and the two first rotating coils 1262 are respectively arranged opposite to each other, so that when the two first rotating coils 1262 are energized, the carrier 125 and the reflective element 11 carried on the carrier 125 are driven to rotate around the first axis Y; the second rotating magnet 1263 and the second rotating coil 1264 are respectively arranged opposite to each other, so that when the second rotating coil 1264 is energized, the frame 123 and the carrier 125 carried on the frame 123 and the reflective element 11 are driven to rotate around the third axis Z together.

[0119] In one example, the first carrier side portion 1252, the second carrier side portion 1253, and the carrier body 1251 each have a rotating magnet slot 1255 on the side facing the reflective base 121. Two first rotating magnets 1261 and one second rotating magnet 1263 are fixed to the carrier 125 by being mounted in the three rotating magnet slots 1255. The first reflective base side portion 1212, the third reflective base side portion 1214, and the second reflective base side portion 1213 each have a rotating coil slot 1217 on the side facing the carrier 125. Two first rotating coils 1262 and one second rotating coil 1264 are fixed to the reflective base 121 by being mounted in the three rotating coil slots 1217.

[0120] More specifically, as shown in Figure 1, the reflective drive unit 126 also includes a reflective magnetic conductive sheet 1265, which is embedded in the carrier 125 and is arranged on the side of at least two rotating magnets away from at least two rotating coils, thereby constraining the magnetic field of the rotating magnet and enhancing the magnetic field strength on the side of the rotating magnet facing the rotating coil.

[0121] In the above example, there are two first rotating magnets 1261 and they are respectively arranged on both sides of the carrier 125. At this time, magnetic fields will be generated on the corresponding sides of the reflection module 10, which will in turn affect other components arranged near the two sides. Therefore, in order to reduce this problem, in another example of the present application, at least two rotating magnets only include a first rotating magnet 1261 fixed to one of the first carrier side 1252 and the second carrier side 1253 and a second rotating magnet 1263 fixed to the carrier body 1251, and the other one fixed to the first carrier side 1252 and the second carrier side 1253 is not provided with the second rotating magnet 1263.

[0122] Furthermore, as shown in Figures 7 and 8, the reflection drive assembly 12 also includes a reflection magnetic attraction portion 127. The reflection magnetic attraction portion 127 includes two first reflection magnetic parts 1271 and two second reflection magnetic parts 1272. The two first reflection magnetic parts 1271 are fixed to the bottom surface of the carrier 125, and the two second reflection magnetic parts 1272 are fixed to the top surface of the reflection base 1211 of the reflection base 121. The two first reflection magnetic parts 1271 and the two second reflection magnetic parts 1272 are magnetically attracted to each other, so that the carrier 125 is magnetically attracted to the top surface of the reflection base 1211 across the frame 123. Accordingly, the carrier 125 is supported on the reflection base 121 across the frame 123 by the magnetic attraction force of the reflection magnetic attraction portion 127. In which, one of the first reflective magnetic part 1271 and the second reflective magnetic part 1272 is implemented as a magnet, and the other of the first reflective magnetic part 1271 and the second reflective magnetic part 1272 is made of a material that can be attracted by a magnet. For example, the other of the first reflective magnetic part 1271 and the second reflective magnetic part 1272 can be implemented as a magnet or a yoke.

[0123] In one example, the two first reflective magnetic members 1271 protrude from the bottom surface of the carrier 125, and the two second reflective magnetic members 1272 protrude from the top surface of the reflective base 121, thereby reducing the distance between the two first reflective magnetic members 1271 and the two second reflective magnetic members 1272, and thereby increasing the magnetic attraction between the first reflective magnetic members 1271 and the second reflective magnetic members 1272. Furthermore, the positions of the frame 123 facing the two first reflective magnetic members 1271 and the two second reflective magnetic members 1272 are respectively recessed inward to provide avoidance space. It should be understood that the positions of the frame 123 facing the two first reflective magnetic members 1271 and the two second reflective magnetic members 1272 can also directly form two through grooves to provide avoidance space, but retaining part of the structure to form four half grooves can maintain the structural strength of the frame 123.

[0124] In one example, as shown in Figure 7, the bottom surface of the carrier 125 is recessed inward to form two carrier magnetic grooves 1256, and the two first reflective magnetic members 1271 are fixed to the bottom surface of the carrier 125 by being respectively installed in the two carrier magnetic grooves 1256; the top surface of the reflective base 1211 also has two reflective base magnetic grooves 1215, and the two second reflective magnetic members 1272 are fixed to the top surface of the reflective base 1211 by being respectively installed in the two reflective base magnetic grooves 1215.

[0125] It is worth noting that FIG9 shows a schematic diagram of a top view of the reflective base 121 along the direction of the first axis Y, wherein the two rotating shaft balls 1241 and the two first reflective magnetic members 1271 are projected onto the reflective base 1211 of the reflective base 121 along the direction of the first axis Y. It should be understood that when the reflective magnetic attraction portion 127 magnetically attracts the carrier 125 to the reflective base 121 through the frame 123 through magnetic attraction, the reflective magnetic attraction portion 127 also applies magnetic attraction to the first support portion 122 and the second support portion 124. However, if the magnetic attraction of the reflective magnetic attraction portion 127 does not directly act on the third axis Z of the two rotating shaft balls 1241 passing through the second support portion 124, the magnetic attraction will affect the rotation of the carrier 125 relative to the frame 123 around the third axis Z. Specifically, when the direction of the magnetic attraction of the reflective magnetic attraction portion 127 does not intersect with the third axis Z, the magnetic attraction of the reflective magnetic attraction portion 127 does not act directly on the third axis Z, which will generate a large restoring resistance, hindering the carrier 125 from rotating around the third axis Z, and thus requiring an increase in the thrust of the reflective drive assembly 12, and causing the rotation of the carrier 125 around the third axis Z relative to the frame 123 to deviate to one direction. In other words, in order to ensure the normal and stable operation of the rotation of the carrier 125 relative to the frame 123, it is necessary to control the positional relationship between the direction of the magnetic attraction of the reflective magnetic attraction portion 127 and the third axis Z. Any deviation may lead to uneven rotation or increase unnecessary thrust requirements, thereby affecting the stability and efficiency of the entire system. It is worth mentioning that the direction of the magnetic attraction of the reflective magnetic attraction portion 127 refers to the direction of the resultant force of all magnetic attractions in the reflective magnetic attraction portion 127. For example, when two magnetic attraction components are generated between the two first reflective magnetic members 1271 and the two second reflective magnetic members 1272 of the reflective magnetic attraction portion 127, the direction of the resultant of the two magnetic attraction components is the direction of the magnetic attraction of the reflective magnetic attraction portion 127. Alternatively, when the reflective magnetic attraction portion 127 generates only one magnetic attraction, the direction of the magnetic attraction is the direction of the magnetic attraction of the reflective magnetic attraction portion 127.

[0126] However, when the magnetic attraction of the reflective magnetic attraction portion 127 directly acts on the shaft support 1221 of the first support portion 122 , the shaft support 1221 will be worn, thereby damaging and affecting the accuracy of the frame 123 rotating relative to the reflective base 121 .

[0127] To address the above issues, in one example, the first axis Y about which the frame 123 rotates relative to the reflective base 121 and the third axis Z about which the carrier 125 rotates relative to the frame 123 do not intersect, and a certain distance exists between the first axis Y and the third axis Z. Accordingly, viewed along the direction of the first axis Y, the first axis Y does not lie on the third axis Z. The third axis Z lies between the rotation shaft support 1221 and the at least two auxiliary balls 1222. In one specific example, the distance from the rotation shaft support 1221 to the third axis Z is less than the distance from the at least two auxiliary balls 1222 to the third axis Z. Furthermore, viewed along the direction of the first axis Y, the direction of the magnetic attraction of the reflective magnetic portion 127 intersects the third axis Z, and the magnetic attraction of the reflective magnetic portion 127 acts directly on the third axis Z. The reflective magnetic portion 127 is symmetrical about the third axis Z.

[0128] Furthermore, the reflection drive assembly 12 also includes a rotational position sensing unit 128, which is used to obtain information about the posture change of the reflective element 11. Specifically, as shown in Figure 3A, the rotational position sensing unit 128 includes a first rotational sensing element 1281 and a second rotational sensing element 1282, each of which is electrically connected to the reflection drive circuit. In one example, the first rotational sensing element 1281 is fixed to the reflective base 1211 and obtains information about the posture change of the carrier 125 by sensing changes in the magnetic field of one of the first reflective magnetic members 1271 fixed to the bottom surface of the carrier 125. Accordingly, in this example, the first reflective magnetic member 1271 is implemented as a magnet. The second rotational sensing element 1282 is fixed to the second reflective base side 1213 and obtains information about the posture change of the carrier 125 by sensing changes in the magnetic field of a second rotating magnet 1263 fixed to the carrier body 1251. In a specific example, the second rotation sensing element 1282 is disposed in the second rotation coil 1264 .

[0129] In other words, the rotational position sensing unit 128 obtains the magnetic field change information of the reflective magnetic attraction unit 127 and the magnetic field change information of at least two rotating magnets through the first rotational sensing element 1281 and the second rotational sensing element 1282 respectively to obtain the posture change information of the reflective element 11. Specifically, the rotational position sensing unit 128 obtains the magnetic field change information of the first reflective magnetic member 1271 for magnetic attraction and the second rotating magnet 1263 for driving through the first rotational sensing element 1281 and the second rotational sensing element 1282 respectively to obtain the posture change information of the carrier 125 and the reflective element 11. It should be understood that the first rotational sensing element 1281 and the second rotational sensing element 1282 can be TMR (Tunnel Magneto Resistance, magnetoresistive sensor), Hall element or driver chip, and the present application is not limited to this.

[0130] Furthermore, as shown in FIG2 , the reflective drive assembly 12 also includes a reflective cover 129, which is fixed to the reflective base 121 and forms a storage space for accommodating other components of the reflective drive assembly 12. Specifically, the reflective cover 129 includes a reflective cover top 1291 and a first reflective cover side portion 1292, a second reflective cover side portion 1293, and a third reflective cover side portion 1294 fixed to the reflective cover top 1291. The reflective cover top 1291 has an incident window 12911, the first reflective cover side portion 1292 and the third reflective cover side portion 1294 are disposed on opposite sides of the cover top, the second reflective cover side portion 1293 connects the first reflective cover side portion 1292 and the third reflective cover side portion 1294, and is located on a side away from the lens module 20. In this way, light can enter the reflective module 10 through the incident window 12911 on the top of the reflective cover 1291 and leave the reflective module 10 from the side of the reflective cover 129 where the side portion of the reflective cover 129 is not provided.

[0131] In summary, the camera module and its reflective module 10 and reflective drive assembly 12 according to the embodiment of the present application are explained, wherein the reflective drive assembly 12 drives the reflective element 11 to rotate through a reasonable structural arrangement to achieve optical image stabilization or camera angle adjustment of the camera module. Specifically, the reflective drive assembly 12 described in the present application can drive the reflective element 11 to rotate around the first axis Y±2.2° and drive the reflective element 11 to rotate around the third axis Z±1.2°.

[0132] Figures 10 to 20 show a camera module and a reflective drive assembly 12 disposed in the camera module according to some embodiments of the present application. As shown in Figure 10, the camera module includes a reflective module 10, a lens module 20, and an imaging module 30, wherein the reflective module 10 is used to change the propagation direction of light from the object to be photographed so that the light points to the lens module 20, the lens module 20 is used to converge the light on the imaging module 30, and the imaging module 30 is used to output the resulting image. In other words, the reflective module 10 deflects the light from the object to be photographed, the lens module 20 is held on the light reflection path of the reflective module 10 and receives the light from the reflective module 10, and the imaging module 30 is held on the light propagation path of the lens module 20 and receives the light emitted by the lens module 20 for imaging. In one example, the reflective module 10, the lens module 20, and the imaging module 30 are arranged in sequence along the light propagation direction, and the reflective module 10 and the imaging module 30 are respectively fixed on both sides of the lens module 20.

[0133] Accordingly, the reflective module 10 includes a reflective drive assembly 12 and a reflective element 11 mounted within the reflective drive assembly 12, wherein the reflective element 11 is adapted to reflect light to fold the imaging optical path of the camera module. In one example, the reflective element 11 is adapted to deflect incident light at a certain angle before exiting to the lens module 20. Specifically, the angle may be 90°. In other words, the reflective element 11 reflects light propagating along a first axis Y in the direction of a second axis X that intersects the first axis Y at a certain angle, and the angle between the first axis Y and the second axis X may be 90°. The first axis Y is parallel to or coincides with the incident optical axis of the reflective module 10, which is also the incident optical axis of the camera module; the second axis X is also the exit optical axis of the reflective module 10. When the angle between the first axis Y and the second axis X is 90°, the first axis Y is perpendicular to the second axis X. It should be understood that, given manufacturing tolerances, the angle at which the reflective element 11 deflects light may have an error of less than 1°. Furthermore, a third axis Z is defined, and the third axis Z is perpendicular to the first axis Y and the second axis X.

[0134] It is worth mentioning that in the present application, the situation where two axes are perpendicular to each other can include the following two: 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, 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, their respective direction vectors are perpendicular to each other, forming a spatial perpendicular relationship. In an example, as shown in Figure 10, the first axis Y and the third axis Z do not intersect each other, 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 in a spatial perpendicular relationship; further, the second axis X and the third axis Z do not intersect each other, 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 in a spatial perpendicular relationship.

[0135] In a specific embodiment, the reflection drive assembly 12 is suitable for driving the reflection element 11 to move, thereby changing the propagation path of the light, and then realizing the optical image stabilization or camera angle adjustment function of the camera module. The reflection element 11 can be implemented as a prism (such as a prism) or a reflector. When the reflection element 11 is implemented as a prism, the reflection element 11 includes a light incident surface 17, a light reflecting surface 18 and a light exit surface 19, and the light incident surface 17 and the light exit surface 19 are perpendicular to each other, and the light reflecting surface 18 is inclined at a 45° angle relative to the light incident surface 17 and the light exit surface 19, so that the light can make a 90° turn at the light reflecting surface 18. When the reflection element 11 is implemented as a reflector, the reflection element 11 only includes the light reflecting surface 18, and the light reflecting surface 18 is inclined at a 45° angle relative to the incident light and the exit light.

[0136] The lens module 20 includes an optical lens 21. The optical axis of the optical lens 21 is the optical axis of the lens module 20. The optical axis of the optical lens 21 is arranged along the direction of the second axis X, so that the light reflected by the reflection module 10 is incident on the optical lens 21 along the direction of the second axis X and is transmitted to the imaging module 30 through the optical lens 21. In one example, the optical lens 21 has a fixed focal length, and the spacing between the optical elements in the optical lens 21 is fixed and cannot be adjusted. However, the optical lens 21 as a whole can be driven to move along the direction of the optical axis of the optical lens 21 to achieve a focusing function, or move in a direction perpendicular to the optical axis of the optical lens 21 to achieve an optical image stabilization function. In another example, the optical lens 21 has a variable focal length (i.e., the focal length of the lens module 20 is variable). The optical lens 21 includes at least one fixed group 211 and at least one movable group 212. The distance between the fixed group 211 and the imaging module 30 along the optical axis of the optical lens 21 is fixed, and the distance between the movable group 212 and the fixed group 211 or the imaging module 30 along the optical axis of the optical lens 21 is adjustable, thereby adjusting the focal length of the optical lens 21. Specifically, the optical lens 21 includes a fixed group 211 and a movable group 212. The movable group 212 is disposed between the fixed group 211 and the imaging module 30. The fixed group 211 includes a fixed lens barrel 2111 and at least one fixed lens 2112 housed therein. The movable group 212 includes a movable lens barrel 2121 and at least one movable lens 2122 housed therein. It should be understood that the number of fixed groups 211 and movable groups 212 may be more than one, depending on specific needs.

[0137] Furthermore, the lens module 20 also includes a lens drive assembly 22. The optical lens 21 is mounted within the lens drive assembly 22. The lens drive assembly 22 drives the optical lens 21 to move, changing the propagation path of light, thereby achieving functions such as anti-shake, focus, and zoom. It should be understood that the lens drive assembly 22 can drive the entire optical lens 21 to achieve focus or anti-shake functions; the lens drive assembly 22 can also drive the movement of a portion of the optical lens 21. For example, the lens drive assembly 22 can drive the movement of the movable group 212 of the optical lens 21 to achieve zoom or anti-shake functions.

[0138] The imaging module 30 includes a photosensitive component 31 and a filter component 32. The photosensitive component 31 includes a photosensitive circuit board 312, a photosensitive chip 311 mounted on the photosensitive circuit board 312, and electronic components (not shown). The photosensitive chip 311 is fixed to the photosensitive circuit board 312 by, for example, bonding, and is electrically connected to the photosensitive circuit board 312 by, for example, wire bonding. After the photosensitive chip 311 receives light and forms an image, it is electrically connected to the mobile electronic device via the photosensitive circuit board 312. The filter component 32 includes a filter bracket 322 and a filter element 321 mounted on the filter bracket 322. The filter bracket 322 is fixed to the photosensitive circuit board 312 by, for example, bonding. The filter element 321 is fixed to the filter bracket 322 by, for example, bonding, so that it is held in the light sensing path of the photosensitive chip 311. The filter element 321 filters the light entering the photosensitive chip 311.

[0139] In some examples of the present application, the imaging module 30 and the lens module 20 are fixed to each other, and the reflective module 10 and the lens module 20 are fixed to each other, thereby forming a periscope camera module with a folded optical path. It should be understood that the mutual fixation between the reflective module 10 and the lens module 20 can be fixed by bonding with an adhesive medium (for example, the reflective base 121 of the reflective module 10 and the lens base 221 of the lens module 20 are bonded with each other by an adhesive medium), or the reflective module 10 and the lens module 20 are fixed by integral molding (for example, the reflective base 121 of the reflective module 10 and the lens base 221 of the lens module 20 are fixed by integral molding). In other words, the reflective module 10 and the lens module 20 use the same base, and the reflective element 11 and the optical lens 21 are installed in the same base to form an integrated periscope camera module.

[0140] As previously mentioned, the reflective element 11 is adapted to deflect the incident light at a certain angle before emitting it, thereby achieving a deflection in the imaging optical path. Further providing a reflective drive assembly 12 allows the reflective drive assembly 12 to drive the reflective element 11 to rotate, thereby achieving the optical image stabilization function or the camera angle adjustment function of the camera module. To this end, the present application provides a reflective drive assembly 12 adapted to drive the reflective element 11 to rotate.

[0141] As shown in Figures 11 to 20, the reflection drive assembly 12 includes a reflection base 121, a carrier 125, and a reflection drive unit 126 for driving the carrier 125 to rotate relative to the reflection base 121. The reflection element 11 is fixed to the carrier 125, which is rotatably disposed on the reflection base 121. The reflection drive unit 126 includes at least two rotating magnets and at least two rotating coils, which are respectively fixed to the carrier 125 and the reflection base 121. The at least two rotating magnets and the at least two rotating coils are disposed opposite to each other. When the rotating coils are energized, an interaction force is generated between the rotating coils and the rotating magnets, thereby driving the carrier 125 and the reflection element 11 fixed to the carrier 125 to rotate relative to the reflection base 121. Accordingly, the reflection drive assembly 12 may further include a reflection drive circuit, which is electrically connected to the at least two rotating coils and provides a driving current. It should be understood that the reflection driving circuit can be implemented as a flexible circuit board attached to the reflection base 121 or a conductive metal insert embedded in the reflection base 121.

[0142] The rotating magnet and the rotating coil are arranged relative to each other to form a rotating magnet-rotating coil pair. When the rotating coil is energized, an interaction force is generated between the rotating magnet and the rotating coil, thereby driving the carrier 125 to rotate relative to the reflective base 121. It should be understood that in order for the reflective drive assembly 12 to drive the carrier 125 to rotate about the first axis Y and the third axis Z, the number of rotating magnets and the number of rotating coils should be at least two, respectively. For example, the number of rotating magnets and the number of rotating coils can be two, three, four, or more, respectively.

[0143] In one example, the reflection drive unit 126 includes at least one first rotating magnet 1261 and at least one first rotating coil 1262 for driving the carrier 125 to rotate around the first axis Y, and at least one second rotating magnet 1263 and at least one second rotating coil 1264 for driving the carrier 125 to rotate around the third axis Z perpendicular to the first axis Y. The at least one first rotating magnet 1261 and the at least one first rotating coil 1262 are arranged relative to each other along the second axis X perpendicular to the first axis Y and the third axis Z, and the at least one second rotating magnet 1263 and the at least one second rotating coil 1264 are also arranged relative to each other along the second axis X.

[0144] In other words, at least two rotating magnet-rotating coil pairs for driving the carrier 125 to rotate about the first axis Y and the third axis Z are disposed on the same side of the carrier 125. It should be understood that this arrangement allows the rotating magnets and rotating coils to be concentrated on one side along the second axis X, so that the reflection drive assembly 12 does not cause electromagnetic interference to other devices on other sides.

[0145] Specifically, as shown in Figures 11 to 13B, the carrier 125 includes a carrier body 1251 and a first carrier side portion 1252 and a second carrier side portion 1253 fixed to both sides of the carrier body 1251 along the direction of the third axis Z. In one example, the first carrier side portion 1252 and the second carrier side portion 1253 are fixed to the carrier body 1251 by integral molding. More specifically, the carrier body 1251 has an inclined mounting surface, and the first carrier side portion 1252 and the second carrier side portion 1253 are fixed to both sides of the carrier body 1251 and form a reflective element accommodating cavity 1254 with the carrier body 1251 having the inclined mounting surface. The reflective element 11 is fixed to the carrier 125 by being mounted in the reflective element accommodating cavity 1254. In this way, the reflective element 11 can rotate around the reflective base 121 along with the carrier 125, so that the reflective element 11 can rotate around the first axis Y and the third axis Z, thereby being able to adjust the angles of light incident on and exiting the reflective element 11 in two directions, and realizing the two-directional anti-shake function of the camera module or the two-directional camera angle adjustment function. It should be understood that the inclined mounting surface of the carrier body 1251 can be further recessed to form a groove, so that while not affecting the installation of the reflective element 11, the mass of the carrier 125 can also be reduced, reducing the demand for driving force.

[0146] The reflective base 121 includes a reflective substrate 1211 and a first reflective base side portion 1212, a second reflective base side portion 1213, and a third reflective base side portion 1214 surrounding and fixed to the reflective substrate 1211. The first reflective base side portion 1212 and the third reflective base side portion 1214 are disposed on opposite sides of the reflective substrate 1211. The second reflective base side portion 1213 connects the first reflective base side portion 1212 and the third reflective base side portion 1214. The second reflective base side portion 1213 is located on a side away from light emitted from the reflective module 10, that is, away from the lens module 20. Thus, the reflective base 121 forms an installation space with an opening facing the direction in which light enters the reflective module 10 and an opening facing the direction in which light exits the reflective module 10. Thus, the carrier 125 and the reflective element 11 can be accommodated in the installation space of the reflective base 121. Through the two openings, light can be incident on the reflective element 11 along the direction of the first axis Y, and after being reflected by the reflective element 11 , the light can also propagate along the direction of the second axis X to the lens module 20 .

[0147] In one example of the present application, at least one first rotating magnet 1261 and at least one second rotating magnet 1263 are fixed to the carrier 125, and at least one first rotating coil 1262 and at least one second rotating coil 1264 are fixed to the reflective base 121. In this example, when the rotating coils are energized, the rotating magnets and the carrier 125 rotate relative to the reflective base 121, thereby implementing a moving magnet-type reflective drive assembly 12. This helps simplify the circuit design of the reflective drive assembly 12 and avoids the problem of energizing the moving parts.

[0148] Furthermore, to ensure that all rotating magnets and rotating coils are arranged relative to each other along the second axis X, at least one first rotating magnet 1261 and at least one second rotating magnet 1263 are fixed to the side of the carrier body 1251 facing the second reflective base side portion 1213, and at least one first rotating coil 1262 and at least one second rotating coil 1264 are fixed to the side of the second reflective base side portion 1213 facing the carrier body 1251. It should be understood that the side of the carrier body 1251 facing the second reflective base side portion 1213 is the side of the carrier 125 away from the lens module 20. The side of the carrier body 1251 facing the second reflective base side portion 1213 can also be referred to as the back side of the carrier 125. In other words, the at least one first rotating magnet 1261 and the at least one second rotating magnet 1263 are both fixed to the back side of the carrier body 1251 facing the second reflective base side portion 1213.

[0149] In one specific example, there are two first rotating magnets 1261 and one second rotating magnet 1263. The two first rotating magnets 1261 and the one second rotating magnet 1263 are each fixed to a side of the carrier body 1251 facing the second reflective base side portion 1213. The two first rotating magnets 1261 are positioned on either side of the second rotating magnet 1263 to balance gravity distribution and ensure more stable and balanced rotation of the carrier 125 to which the rotating magnets are attached. In a preferred example, the two first rotating magnets 1261 are symmetrically positioned on either side of the second rotating magnet 1263.

[0150] Accordingly, the number of first rotating coils 1262 and second rotating coils 1264 is consistent with the number of first rotating magnets 1261 and second rotating magnets 1263, respectively. There are two first rotating coils 1262 and one second rotating coil 1264. The two first rotating coils 1262 and one second rotating coil 1264 are respectively fixed to the side of the second reflective base 1213 facing the carrier body 1251. The two first rotating coils 1262 are disposed on either side of the second rotating coil 1264, and the two first rotating coils 1262 are disposed opposite the two first rotating magnets 1261, respectively, while the second rotating coil 1264 is disposed opposite the second rotating magnet 1263.

[0151] It's worth noting that providing two first rotating coils 1262 can reduce the number of turns of each first rotating coil 1262 while providing the same or even greater driving force, thereby eliminating the need for a larger thickness for the first rotating coil 1262. The coil thickness can be understood as the dimension of the coil along the second axis X. It should be understood that when the rotating coil thickness is designed to be larger, the wire in the rotating coil farther from the rotating magnet is less affected by the rotating magnet's magnetic field, significantly impacting the driving force. Therefore, providing two rotating coils eliminates the need for a larger thickness for the first rotating coil 1262 while still providing sufficient driving force. Furthermore, when the carrier 125 rotates about the first axis Y relative to the reflective base 121, the minimum gap between the first rotating coils 1262 and the first rotating magnet 1261 on either side decreases. Therefore, to avoid damage caused by collision between the first rotating coil 1262 and the first rotating magnet 1261, reducing the thickness of the first rotating coil 1262 significantly increases the gap between them.

[0152] Accordingly, in one example, the gap between the first rotating coil 1262 and the first rotating magnet 1261 is no smaller than the gap between the second rotating coil 1264 and the second rotating magnet 1263. Specifically, the gap between the two first rotating coils 1262 and the two first rotating magnets 1261 on either side is no smaller than the gap between the second rotating coil 1264 located in the middle and the second rotating magnet 1263. Furthermore, as shown in FIG20 , the thickness of the first rotating coil 1262 is smaller than that of the second rotating coil 1264, thereby increasing the design space for the gap between the two first rotating coils 1262 and the two first rotating magnets 1261 on either side.

[0153] It's worth noting that, in one example of the present application, the first rotating magnet 1261 and the second rotating magnet 1263 can be monopolar magnets having only one north pole and one south pole. In another example of the present application, the first rotating magnet 1261 and the second rotating magnet 1263 can be multipolar magnets having at least two north poles and at least two south poles, or a magnet composed of multiple monopolar magnets. Regardless of whether the first rotating magnet 1261 and the second rotating magnet 1263 are multipolar magnets, as shown in FIG14 , the surface of the first rotating magnet 1261 facing the first rotating coil 1262 has at least two magnetic pole regions arranged along the third axis Z, and the surface of the second rotating magnet 1263 facing the second rotating coil 1264 has at least two magnetic pole regions arranged along the first axis Y. Specifically, the north and south pole regions of the surface of the first rotating magnet 1261 facing the first rotating coil 1262 are arranged along the third axis Z, while the north and south pole regions of the surface of the second rotating magnet 1263 facing the second rotating coil 1264 are arranged along the first axis Y. Accordingly, in the direction of the third axis Z, the size of the second rotating magnet 1263 is larger than the size of the first rotating magnet 1261. It should be understood that in this application, a magnetic pole region refers to an N-pole region or an S-pole region.

[0154] A rotating magnet with multiple north and south poles can provide higher magnetic flux and a more complex magnetic field distribution, thereby enabling finer control. It should be understood that the second rotating magnet 1263 is positioned between the two first rotating magnets 1261. If the second rotating magnet 1263 is implemented as two monopole magnets, the magnetic field influence of the first rotating magnets 1261 on either side can make installation of the two monopole magnets difficult. Therefore, in one specific example, the middle second rotating magnet 1263 is a multipole magnet with two north and two south poles, rather than two monopole magnets. Furthermore, considering that the second rotating magnet 1263 should be designed to be as large as possible along the third axis Z to maximize the driving force for rotation about the third axis Z, and that a non-magnetic region exists in the middle of a multipole magnet, the two first rotating magnets 1261 can each be composed of two monopole magnets, thereby avoiding the presence of a non-magnetic region and reducing the space occupied by the two first rotating magnets 1261 along the third axis Z.

[0155] Furthermore, as shown in Figure 12B, the side of the carrier body 1251 facing the reflective base 121 is recessed inward to form a rotating magnet slot 1255. Two first rotating magnets 1261 and a second rotating magnet 1263 are secured within this rotating magnet slot 1255. The side of the second reflective base 1213 facing the carrier 125 is recessed inward to form a rotating coil slot 1217. Two first rotating coils 1262 and a second rotating coil 1264 are secured to the reflective base 121 by being mounted within the rotating coil slot 1217. In one example, the reflective drive unit 126 further includes a reflective magnetic conductive sheet 1265 embedded in the carrier 125 and positioned on the side of the at least two rotating magnets facing away from the at least two rotating coils. This sheet 1265 confines the magnetic field of the rotating magnets and enhances the magnetic field strength on the side of the rotating magnets facing the rotating coils. In one specific example, the reflective magnetic conductive sheet 1265 is exposed and serves as the bottom of the rotating magnet slot 1255.

[0156] Furthermore, the reflection drive assembly 12 also includes a rotational position sensing unit 128, which is used to obtain posture change information of the carrier 125, and further obtain posture change information of the reflective element 11 mounted on the carrier 125. Specifically, as shown in Figures 13A, 14, and 15, the rotational position sensing unit 128 includes a first rotation sensing element 1281 and a second rotation sensing element 1282 for obtaining posture change information of the carrier 125. The first rotation sensing element 1281 and the second rotation sensing element 1282 are respectively electrically connected to the reflection drive circuit. In one example, the first rotation sensing element 1281 and the second rotation sensing element 1282 are both fixed to the side portion 1213 of the second reflective base, wherein the first rotation sensing element 1281 is disposed in the middle of one of the first rotating coils 1262 and faces one of the first rotating magnets 1261. The first rotation sensing element 1281 is used to sense information about changes in the posture of the carrier 125 rotating about the first axis Y. The second rotation sensing element 1282 is disposed in the middle of the second rotating coil 1264 and faces the second rotating magnet 1263. The second rotation sensing element 1282 is used to sense information about changes in the posture of the carrier 125 rotating about the third axis Z. It should be understood that in the present application, the first rotation sensing element 1281 and the second rotation sensing element 1282 may be a TMR (magnetoresistive sensor), a Hall element, or a driver chip, and the present application is not limited thereto.

[0157] More specifically, because the carrier 125 needs to rotate about the first axis Y and the third axis Z, the first rotation sensing element 1281 and the second rotation sensing element 1282 are affected by position changes in the other directions when detecting position changes in one direction. Therefore, to reduce the impact of position changes in the other directions on sensing accuracy, in a specific example of the present application, as shown in FIG15 , the projection of the first rotation sensing element 1281 along the second axis X overlaps with the third axis Z, and the projection of the second rotation sensing element 1282 along the second axis X overlaps with the first axis Y. Furthermore, considering that the rotation sensing elements have better detection performance when arranged relative to the region where the N-pole region and S-pole region of the rotating magnet meet, the first rotation sensing element 1281 is arranged relative to the region where the N-pole region and S-pole region of the first rotating magnet 1261 meet, and the second rotation sensing element 1282 is arranged relative to the region where the N-pole region and S-pole region of the second rotating magnet 1263 meet.

[0158] In the present application, the portion of the first rotating coil 1262 that interacts with the first rotating magnet 1261 primarily extends along the first axis Y. Therefore, the first rotating coil 1262 has a length extending along the first axis Y. The portion of the second rotating coil 1264 that interacts with the second rotating magnet 1263 primarily extends along the third axis Z. Therefore, the second rotating coil 1264 has a length extending along the third axis Z. The length directions of the first rotating coil 1262 and the second rotating coil 1264 are perpendicular to each other. Accordingly, in one specific example, the first rotation sensing element 1281 disposed in the first rotating coil 1262 and the second rotation sensing element 1282 disposed in the second rotating coil 1264 are disposed perpendicular to each other.

[0159] 11 to 13B , in the present application, the reflection drive assembly 12 further includes a frame 123, a first support portion 122 disposed between the reflection base 121 and the frame 123, and a second support portion 124 disposed between the carrier 125 and the frame 123. The frame 123 is rotatably supported on the reflection base 121 via the first support portion 122, and the carrier 125 is rotatably supported on the frame 123 via the second support portion 124. Furthermore, the carrier 125 is rotatably disposed on the reflection base 121, and the frame 123 indirectly supports the reflective element 11 via the carrier 125. Specifically, the carrier 125 rotates around the third axis Z relative to the frame 123, and the frame 123 rotates around the first axis Y relative to the reflective base 121. When the frame 123 is driven to rotate around the first axis Y relative to the reflective base 121, the carrier 125 will also rotate around the first axis Y relative to the reflective base 121 together with the frame 123. In this way, the reflective element 11 can rotate around the first axis Y and the third axis Z, so that the angles of the light incident and exiting the reflective element 11 can be adjusted in two directions, and the two-direction anti-shake function of the camera module or the two-direction camera angle adjustment function can be realized.

[0160] As previously described, a first support portion 122 is disposed between the reflective base 121 and the frame 123. The frame 123 is rotatably supported above the reflective substrate 1211 of the reflective base 121 via the first support portion 122. The first support portion 122 includes a rotation shaft support 1221 and at least two auxiliary balls 1222. The rotation shaft support 1221 passes through the first axis Y and is fixed to the reflective base 121 or the frame 123. The at least two auxiliary balls 1222 are disposed between at least two auxiliary upper grooves 1235 of the frame 123 and at least two auxiliary lower grooves 1216 of the reflective base 121. In one example, the shaft support 1221 is fixed to the reflective base 1211 of the reflective base 121, and the shaft support 1221 protrudes from the top surface of the reflective base 1211 facing the frame 123. The bottom surface of the frame 123 facing the reflective base 1211 has a shaft positioning groove 1234. The shaft support 1221 is accommodated in the shaft positioning groove 1234 and maintains contact with the shaft positioning groove 1234. The shaft support 1221 and the shaft positioning groove 1234 are arranged relative to each other along the direction of the first axis Y. Specifically, the position of the rotation shaft positioning groove 1234 corresponds to the position of the rotation shaft support 1221. The first axis Y passes through both the rotation shaft positioning groove 1234 and the rotation shaft support 1221. The shape of the rotation shaft support 1221 matches the shape of the rotation shaft positioning groove 1234. The rotation shaft support 1221 and the rotation shaft positioning groove 1234 limit each other. The frame 123 is restricted from rotating about the first axis Y relative to the reflective base 121 by the limiting relationship between the rotation shaft positioning groove 1234 and the rotation shaft support 1221. In this case, the first axis Y is the rotation axis of the frame 123, and the first axis Y coincides with the rotation axis of the frame 123. The frame 123 and the reflective element 11 supported by the frame 123 rotate about the first axis Y. Accordingly, the rotation shaft support 1221 has an arcuate top surface. For example, the rotation shaft support 1221 protrudes from the reflective base 1211 in a hemispherical shape. Of course, the top surface of the hemispherical pivot support 1221 can also have a flat surface, thereby reducing the difficulty of molding the pivot support 1221. In this example, the pivot support 1221 is fixed to the reflective base 1211 of the reflective base 121, making it difficult for the frame 123 to deflect during rotation. The matching shape of the pivot positioning groove 1234 of the frame 123 and the pivot support 1221 further restricts the frame 123 to rotation only about the first axis Y passing through the pivot support 1221, making the rotation of the reflective element 11 less susceptible to external influences. It is worth noting that since the pivot support 1221 is fixed and immovable, the shape requirements for the pivot positioning groove 1234 are reduced. Maintaining at least three point contacts or line contacts between the pivot positioning groove 1234 and the pivot support 1221 ensures that the rotation axis of the frame 123 does not deflect during rotation relative to the reflective base 121. Here, in a specific example, line contact refers to circular line contact.

[0161] Furthermore, in one specific example, the hinge support 1221 is made of metal and is embedded in the reflective substrate 1211 via an insert molding process, thereby maintaining the durability of the hinge support 1221. However, when the hinge positioning groove 1234 is formed of plastic or resin, the metal hinge support 1221 is likely to cause a dent in the hinge positioning groove 1234, thereby affecting the rotation of the frame 123. Therefore, the material of the hinge support 1221 and the hinge positioning groove 1234 can be made consistent, for example, by making both the hinge support 1221 and the hinge positioning groove 1234 metal, plastic, or resin, thereby reducing the likelihood of a dent in the hinge positioning groove 1234. Specifically, the hinge support 1221 is integrally formed onto the top surface of the reflective substrate 1211 via an injection molding process, thereby being fixed to the top surface of the reflective substrate 1211.

[0162] It should be understood that in other examples of the present application, the rotation shaft support member 1221 may also be fixed to the bottom surface of the frame 123, and accordingly, the top surface of the reflective base 1211 has a corresponding rotation shaft positioning groove 1234. In other words, the rotation shaft support member 1221 is fixed to one of the reflective base 121 and the frame 123, and the other of the reflective base 121 and the frame 123 has a corresponding rotation shaft positioning groove 1234 on the side facing the rotation shaft support member 1221.

[0163] Furthermore, the first support portion 122 includes at least two auxiliary balls 1222 for assisting the shaft support member 1221 in supporting the frame 123. The shaft support member 1221 and the at least two auxiliary balls 1222 form a support plane for the frame 123, thereby preventing the frame 123 from tilting undesirably during rotation. It should be understood that, in one example, the height of the at least two auxiliary balls 1222 protruding from the reflective substrate 1211 is equal to the height of the shaft support member 1221 protruding from the reflective substrate 1211, thereby providing a horizontal support plane for the shaft support member 1221 and the at least two auxiliary balls 1222. The diameter of the auxiliary balls 1222 is in the range of 0.6-1.2 mm, inclusive. In one specific example, the diameter of the auxiliary balls 1222 is 0.9 mm.

[0164] To restrict the position of at least two auxiliary balls 1222 between the frame 123 and the reflective base 121, the bottom surface of the frame 123 has at least two auxiliary upper grooves 1235, and the top surface of the reflective base 1211 has at least two auxiliary lower grooves 1216. The at least two auxiliary upper grooves 1235 and the at least two auxiliary lower grooves 1216 correspond to each other and respectively form at least two spaces for the balls to move. The at least two auxiliary balls 1222 are positioned between the at least two auxiliary upper grooves 1235 of the frame 123 and the at least two auxiliary lower grooves 1216 of the reflective base 121. In one example, the number of auxiliary upper grooves 1235 and the number of auxiliary lower grooves 1216 are equal to the number of auxiliary balls 1222, and only one auxiliary ball 1222 can be accommodated between each auxiliary upper groove 1235 and each auxiliary lower groove 1216. For example, as shown in FIG. 13A of the present application, the number of auxiliary balls 1222 is two, and accordingly, the number of auxiliary upper grooves 1235 and the number of auxiliary lower grooves 1216 are also two. It should be understood that in order to improve the reliability of the reflection drive assembly 12, the depth of the auxiliary upper groove 1235 and the auxiliary lower groove 1216 is smaller than the radius of the auxiliary ball 1222, so that when the auxiliary ball 1222 is set in the auxiliary upper groove 1235 or the auxiliary lower groove 1216, at least half of the auxiliary ball 1222 is exposed in the auxiliary upper groove 1235 or the auxiliary lower groove 1216.

[0165] Furthermore, the frame 123 is also embedded with an auxiliary ball support metal part 1236, which is embedded in the frame 123 through an insert injection molding process and exposed as the bottom of the auxiliary upper groove 1235, thereby strengthening the structure of the frame 123 while making the auxiliary upper groove 1235 have a harder bottom.

[0166] In the present application, the limiting relationship between the rotational axis support member 1221 and the rotational axis positioning groove 1234 provides the rotational axis for the frame 123. The at least two auxiliary balls 1222 serve only to support the frame 123 on the reflective base 121. To reduce the resistance generated by the auxiliary balls 1222, one of the at least two auxiliary upper grooves 1235 and the at least two auxiliary lower grooves 1216 is a linear groove extending along a tangent to a virtual circle centered on the first axis Y. The auxiliary balls 1222 are loosely accommodated in the linear grooves. In a minimum state, the auxiliary balls 1222 only make contact with the linear groove at one point, and in a maximum state, the auxiliary balls 1222 only make contact with the linear groove at three points. In this manner, during the rotation of the frame 123 relative to the reflective base 121, the freedom of movement of the at least two auxiliary balls 1222 is improved, friction is reduced, and wear between the at least two auxiliary balls 1222 and the groove wall is reduced, thereby improving the energy conversion efficiency of the reflective drive assembly 12. Accordingly, the response speed of the reflective drive assembly 12 is improved. It should be understood that a linear groove refers to a groove extending in a straight line. In this application, the linear groove extends in a straight line along a tangent direction of a virtual circle with the first axis Y as the center, and the symmetry axis of the at least two linear grooves along the length direction is tangent to the virtual circle. In a specific example, the symmetry axis of the at least two auxiliary upper grooves 1235 or the at least two auxiliary lower grooves 1216, which are linear grooves, along the length direction is tangent to the virtual circle with the first axis Y as the center. In other words, one of the at least two auxiliary upper grooves 1235 and the at least two auxiliary lower grooves 1216 is a linear groove having a symmetry axis tangent to the virtual circle with the first axis Y as the center. Furthermore, the linear groove has two long groove walls and two short groove walls. The two long groove walls are arranged opposite each other, and the two short groove walls are respectively connected to the two long groove walls. The two long groove walls are parallel to each other and extend along straight lines. The connection between the two short groove walls and the two long groove walls can be an arc connection, thereby reducing the difficulty of forming the linear groove. Accordingly, the linear groove has a rounded rectangular shape.

[0167] Furthermore, the other of the at least two auxiliary upper grooves 1235 and the at least two auxiliary lower grooves 1216 may also be a linear groove. However, if both the at least two auxiliary upper grooves 1235 and the at least two auxiliary lower grooves 1216 are linear grooves, the position of the auxiliary ball 1222 may be uncontrolled when the drive frame 123 rotates relative to the reflective base 121, resulting in the auxiliary ball 1222 being stuck in the auxiliary upper groove 1235 and the auxiliary lower groove 1216, thus affecting the rotation of the frame 123 relative to the reflective base 121 about the first axis Y. For example, during the driving process, when the auxiliary ball 1222 is located on the side of the auxiliary lower groove 1216 for accommodating the auxiliary ball 1222 closest to the rotation direction of the frame 123 and on the side of the auxiliary upper groove 1235 for accommodating the auxiliary ball 1222 farthest from the rotation direction of the frame 123, and the frame 123 continues to be driven to rotate relative to the reflective base 121, the auxiliary ball 1222 is clamped by the groove wall of the corresponding auxiliary upper groove 1235 and the groove wall of the auxiliary lower groove 1216, making it difficult for the auxiliary ball 1222 to roll or translate, thereby affecting the rotation of the frame 123. To solve this problem, the length of the auxiliary upper groove 1235 or the auxiliary lower groove 1216 can be increased. However, increasing the length of the auxiliary upper groove 1235 or the auxiliary lower groove 1216 will occupy more space in the frame 123 or the reflective base 1211, resulting in an increase in the size of the frame 123 or the reflective base 1211, and thus an increase in the size of the reflective drive assembly 12.

[0168] Therefore, in one example of the present application, the other of the at least two auxiliary upper grooves 1235 and the at least two auxiliary lower grooves 1216 is a positioning groove for positioning the auxiliary ball 1222, and the auxiliary ball 1222 is tightly accommodated in the positioning groove. It is worth mentioning that being tightly accommodated in the positioning groove does not mean that there is no gap between the auxiliary ball 1222 and the positioning groove. There can still be a certain gap between the auxiliary ball 1222 and the positioning groove so that the auxiliary ball 1222 can still roll or translate in the positioning groove while being positioned by the positioning groove. Specifically, tightly accommodated means that when the auxiliary ball 1222 is centered in the positioning groove, the minimum distance between the auxiliary ball 1222 and the side wall of the positioning groove is less than or equal to 0.1 mm. Preferably, the minimum distance is less than or equal to 0.05 mm. Accordingly, loosely fitting means that when the auxiliary balls 1222 are centrally disposed in the linear groove, the minimum distance between the auxiliary balls 1222 and the long side groove walls is greater than or equal to 0.1 mm, preferably greater than or equal to 0.15 mm; and the minimum distance between the auxiliary balls 1222 and the short side groove walls is at least 0.2 mm greater than the travel range of the auxiliary balls 1222. Accordingly, the maximum gap between the at least two auxiliary balls 1222 and the at least two auxiliary lower grooves 1216 is smaller than the maximum gap between the at least two auxiliary balls 1222 and the at least two auxiliary upper grooves 1235.

[0169] It should be understood that in a specific example, at least two auxiliary lower grooves 1216 are straight grooves and extend along the tangent direction of a virtual circle with the first axis Y as the center, and at least two auxiliary upper grooves 1235 are positioning grooves for positioning the auxiliary balls 1222. At least two auxiliary balls 1222 are loosely accommodated in at least two auxiliary lower grooves 1216, and at least two auxiliary balls 1222 are tightly accommodated in at least two auxiliary upper grooves 1235. At this time, at least two auxiliary balls 1222 are respectively positioned by at least two auxiliary upper grooves 1235. In another specific example, the at least two auxiliary upper grooves 1235 are linear grooves extending along a tangent direction of a virtual circle centered on the first axis Y. The at least two auxiliary lower grooves 1216 are positioning grooves for positioning the auxiliary balls 1222. The at least two auxiliary balls 1222 are loosely accommodated in the at least two auxiliary upper grooves 1235, while the at least two auxiliary balls 1222 are tightly accommodated in the at least two auxiliary lower grooves 1216. In this case, the at least two auxiliary balls 1222 are respectively positioned by the at least two auxiliary lower grooves 1216. From the perspective of the rotation of the drive frame 123 relative to the reflective base 121, there is no obvious advantage or disadvantage between the two specific examples. However, considering the assembly process, the linear grooves cannot position the balls, and the auxiliary balls 1222 must first be placed in the positioning grooves during installation. Therefore, to simplify the assembly process and avoid the step of flipping the semi-finished reflective drive assembly 12 during assembly of the auxiliary balls 1222, it is preferred that the at least two auxiliary lower grooves 1216 are positioning grooves for positioning the auxiliary balls 1222. Accordingly, the gap between the at least two auxiliary balls 1222 and the at least two auxiliary lower grooves 1216 is smaller than the gap between the at least two auxiliary balls 1222 and the at least two auxiliary upper grooves 1235 .

[0170] Further referring to Figures 16 and 17 , reference numeral 1216′ denotes the projection of the auxiliary lower groove 1216 onto the bottom surface of the frame 123 along the first axis Y, C denotes a virtual circle centered on the first axis Y, and A denotes the axis of symmetry of the auxiliary upper groove 1235 along its length. In this example, the number of auxiliary balls 1222, auxiliary upper grooves 1235, and auxiliary lower grooves 1216 are all two. The first support portion 122 includes two auxiliary balls 1222, the bottom surface of the frame 123 has two auxiliary upper grooves 1235, and the reflective substrate 1211 has two auxiliary lower grooves 1216. The two auxiliary upper grooves 1235 are symmetrically formed on the bottom surface of the frame 123, and the two auxiliary lower grooves 1216 are symmetrically formed on the top surface of the reflective substrate 1211. The two auxiliary upper grooves 1235 are disposed opposite the two auxiliary lower grooves 1216, forming two spaces for the ball to move. Among them, the two auxiliary upper grooves 1235 are straight grooves, and the two auxiliary lower grooves 1216 are positioning grooves. A virtual circle C is drawn with the first axis Y as the center. The two auxiliary upper grooves 1235 extend along the tangent direction of the virtual circle C. The initial position of each auxiliary lower groove 1216 is projected onto the middle area of ​​the relative auxiliary upper groove 1235 along the direction of the first axis Y. It should be understood that the initial position of the two auxiliary lower grooves 1216 refers to the position of the two auxiliary lower grooves 1216 when the angles by which the frame 123 can rotate in two opposite directions around the first axis Y relative to the reflective base 121 are equal. In this way, when the reflective drive assembly 12 drives the frame 123 to rotate around the first axis Y, the reflective element 11 can have a larger rotation angle in both directions. In a specific example, in the initial position, the center points of the two auxiliary upper grooves 1235 are located on the virtual circle C with the first axis Y as the center.

[0171] Specifically, each of the two auxiliary upper grooves 1235 has a symmetry axis A that is tangent to a virtual circle C centered on the first axis Y along its length. The two auxiliary balls 1222 are loosely accommodated in each of the two auxiliary upper grooves 1235. When the auxiliary balls 1222 are centrally disposed in the auxiliary upper grooves 1235, the minimum distance L2 between the auxiliary balls 1222 and the long side walls of the auxiliary upper grooves 1235 is greater than 0.1 mm, preferably greater than 0.15 mm. The minimum distance L3 between the auxiliary balls 1222 and the short side walls of the auxiliary upper grooves 1235 is at least 0.2 mm greater than the travel range of the auxiliary balls 1222. The travel range of the auxiliary balls 1222 is related to the angle at which the frame 123 can rotate about the first axis Y and the distance between the auxiliary balls 1222 and the first axis Y. Furthermore, in one example, the angle α between the first axis Y and the perpendiculars to the two auxiliary upper grooves 1235 ranges from 80° to 100°, thereby ensuring that the auxiliary balls 1222 provide better support during the rotation of the frame 123 and preventing the size of the frame 123 from being excessively enlarged due to the provision of the auxiliary upper grooves 1235. In a specific example, the angle α between the first axis Y and the perpendiculars to the longitudinal axis of symmetry A of the two auxiliary upper grooves 1235 is 90°.

[0172] The two auxiliary lower grooves 1216 correspond to the two auxiliary upper grooves 1235, respectively. The two auxiliary balls 1222 are tightly accommodated in the two lower auxiliary grooves 1216. When the auxiliary balls 1222 are centrally positioned in the lower auxiliary grooves 1216, the minimum distance L1 between the auxiliary balls 1222 and the sidewalls of the lower auxiliary grooves 1216 is less than 0.1 mm. Preferably, this minimum distance L1 is less than 0.05 mm. Accordingly, the maximum gap between the two auxiliary balls 1222 and the two lower auxiliary grooves 1216 is less than the maximum gap between the two auxiliary balls 1222 and the two upper auxiliary grooves 1235. It should be understood that tight fit only means that when the auxiliary ball 1222 is arranged between the auxiliary upper groove 1235 and the auxiliary lower groove 1216, the gap between the auxiliary ball 1222 and the auxiliary lower groove 1216 is smaller than the gap between the auxiliary ball 1222 and the auxiliary upper groove 1235, so that the auxiliary lower groove 1216 can play a positioning role, and does not mean that the auxiliary ball 1222 is stuck in the auxiliary lower groove 1216.

[0173] It should be understood that the tight fit between the auxiliary lower groove 1216 and the auxiliary ball 1222 allows the auxiliary ball 1222 to be positioned relative to the frame 123. Therefore, when the frame 123 rotates relative to the reflective base 121, the auxiliary ball 1222 is not positioned in an unfavorable position, thereby preventing the auxiliary ball 1222 from becoming stuck. Therefore, this configuration has obvious advantages. It should also be understood that more auxiliary balls 1222, as well as the auxiliary upper groove 1235 and the auxiliary lower groove 1216 for accommodating the auxiliary balls 1222, can be provided, for example, three, four, or more, and this application is not limited thereto.

[0174] 11 to 13B , the frame 123 includes a main frame body 1231 and first and second side frames 1232, 1233 fixed to either side of the main frame body 1231 along the third axis Z. In one example, the first and second side frames 1232, 1233 are fixed to the main frame body 1231 by integral molding. More specifically, the first and second side frames 1232, 1233 extend from either side of the main frame body 1231 toward the carrier 125. The top surfaces of the first and second side frames 1232, 1233 facing the carrier 125 are recessed downward to form first and second lower shaft grooves 12321, 12331, respectively. The second support portion 124 includes two shaft balls 1241, which are received in the first and second lower shaft grooves 12321, 12331, respectively. The two rotating shaft balls 1241 have the same height and are passed through by a third axis Z perpendicular to the first axis Y and the second axis X. This allows the carrier 125 supported by the two rotating shaft balls 1241 to rotate relative to the frame 123 about the third axis Z. The first frame side portion 1232 and the second frame side portion 1233 extend from either side of the frame body 1231 toward the carrier 125. The heights of the two rotating shaft balls 1241 are adjusted by adjusting the heights of the first rotating shaft lower groove 12321 and the second rotating shaft lower groove 12331, respectively, thereby controlling the height of the third axis Z passing through the two rotating shaft balls 1241. It is worth noting that, in one example, the third axis Z is adjusted to pass through or be close to the center of gravity of the reflective element 11 by adjusting the height of the first frame side portion 1232 and the second frame side portion 1233 extending upward from the frame body 1231 and their positions in the direction of the second axis X, thereby maintaining the stability of the reflective element 11 during rotation about the third axis Z.

[0175] In order to respectively accommodate the protruding first frame side portion 1232 and the second frame side portion 1233, as shown in Figure 18, the outer sides of the first carrier side portion 1252 and the second carrier side portion 1253 (i.e., the side away from the reflective element 11) are respectively recessed to form a first carrier side recess 12521 and a second carrier side recess 12531, so that the first frame side portion 1232 can extend into the first carrier side recess 12521 of the first carrier side portion 1252, and the second frame side portion 1233 can extend into the second carrier side recess 12531 of the second carrier side portion 1253. Furthermore, the first carrier side portion 1252 has a first rotation shaft upper groove 12522 at a position facing the first rotation shaft lower groove 12321, and the second carrier side portion 1253 has a second rotation shaft upper groove 12532 at a position facing the second rotation shaft lower groove 12331. The first rotation shaft upper groove 12522 and the first rotation shaft lower groove 12321 form a ball movement space, and the second rotation shaft upper groove 12532 and the second rotation shaft lower groove 12331 also form a ball movement space. Two rotation shaft balls 1241 are respectively disposed between the first rotation shaft upper groove 12522 and the first rotation shaft lower groove 12321, and between the second rotation shaft upper groove 12532 and the second rotation shaft lower groove 12331. In this manner, the two rotation shaft balls 1241 are respectively disposed between the first carrier side portion 1252 and the first frame side portion 1232, and between the second carrier side portion 1253 and the second frame side portion 1233. It should be understood that the two rotating shaft balls 1241 can be rollably arranged between the carrier 125 and the frame 123 , or the two rotating shaft balls 1241 can be fixed to the carrier 125 or the frame 123 .

[0176] Specifically, in one example, the first shaft lower groove 12321 and the second shaft lower groove 12331 each maintain at least three-point contact or line contact with the two shaft balls 1241, thereby defining the two shaft balls 1241 in the first shaft lower groove 12321 and the second shaft lower groove 12331. One of the first shaft upper groove 12522 and the second shaft upper groove 12532 maintains at least three-point contact or line contact with one of the shaft balls 1241, while the other of the first shaft upper groove 12522 and the second shaft upper groove 12532 maintains only two-point contact with the other shaft ball 1241. For example, the first shaft upper groove 12522 maintains at least three-point contact or line contact with one of the shaft balls 1241, while the second shaft upper groove 12532 maintains only two-point contact with the other shaft ball 1241. In this way, the carrier 125 can be positioned on the frame 123 by one of the rotational shaft balls 1241, while the other rotational shaft ball 1241 does not play a positioning role. Therefore, when the carrier 125 is supported on the frame 123 by the two rotational shaft balls 1241, it is not difficult for the two rotational shaft balls 1241 to be respectively positioned between the first rotational shaft upper groove 12522 and the first rotational shaft lower groove 12321, and between the second rotational shaft upper groove 12532 and the second rotational shaft lower groove 12331 due to manufacturing tolerances of the components. In a specific example, the line contact refers to circular line contact.

[0177] Continuing with reference to Figures 13A and 18, the first shaft lower groove 12321, the second shaft lower groove 12331 and the first shaft upper groove 12522 are all truncated cone-shaped grooves, and the second shaft upper groove 12532 is a groove extending along the direction of the third axis Z and having a trapezoidal cross-section, so that one of the shaft balls 1241 maintains line contact with the first shaft lower groove 12321 and the first shaft upper groove 12522 respectively, and the other shaft ball 1241 maintains line contact with the second shaft lower groove 12331 and maintains two-point contact with the second shaft upper groove 12532.

[0178] Accordingly, in the present application, the two rotating shaft balls 1241 and at least two auxiliary balls 1222 are respectively arranged at different heights, but the two rotating shaft balls 1241 and at least two auxiliary balls 1222 can be arranged in the reflection drive component 12 through the height direction (that is, the direction of the first axis Y), which makes the assembly of the reflection drive component 12 simple, and only the components need to be stacked along the height direction.

[0179] In one example of the present application, as shown in FIG12A , a carrier buffer 1257 is further fixed to the surface of the carrier 125. Specifically, the carrier buffer 1257 is fixed to the surface of the carrier 125 by processes such as gluing or overmolding, thereby providing a buffering effect when the carrier 125 collides with the frame 123 or the reflective base 121. The carrier buffer 1257 can be made of a flexible material such as silicone.

[0180] It is worth mentioning that, as mentioned above, considering that the reflective base 121 has an opening facing the direction of the light emitting reflective module 10, in order to prevent the carrier 125 from exceeding the rotation stroke or falling off when rotating around the third axis Z, the frame 123 also includes two rotation stops 1237. The two rotation stops 1237 are respectively arranged on both sides of the frame body 1231 along the direction of the third axis Z, and extend integrally from both sides of the frame body 1231 along the direction of the second axis X to the bottom of the first carrier side 1252 and the second carrier side 1253, so that the projections of the two rotation stops 1237 in the direction of the first axis Y fall on the first carrier side 1252 and the second carrier side 1253 respectively. Therefore, when the rotation angle of the carrier 125 exceeds the design angle, the carrier 125 can be stopped by the two rotation stops 1237 and stop rotating.

[0181] Furthermore, as shown in Figures 14, 18 and 20, the reflection drive assembly 12 also includes a reflection magnetic attraction portion 127. The reflection magnetic attraction portion 127 includes two first reflection magnetic parts 1271 and two second reflection magnetic parts 1272. The two first reflection magnetic parts 1271 are respectively fixed to the bottom surface of the carrier 125, and the two second reflection magnetic parts 1272 are respectively fixed to the top of the reflection base 1211 of the reflection base 121. The two first reflection magnetic parts 1271 and the two second reflection magnetic parts 1272 are magnetically attracted to each other, so that the carrier 125 is magnetically attracted to the top surface of the reflection base 1211 across the frame 123. Accordingly, the carrier 125 is supported on the reflection base 121 across the frame 123 by the magnetic attraction force of the reflection magnetic attraction portion 127. In which, one of the first reflective magnetic part 1271 and the second reflective magnetic part 1272 is implemented as a magnet, and the other of the first reflective magnetic part 1271 and the second reflective magnetic part 1272 is made of a material that can be attracted by a magnet. For example, the other of the first reflective magnetic part 1271 and the second reflective magnetic part 1272 can be implemented as a magnet or a yoke.

[0182] In one example of the present application, the two first reflective magnetic parts 1271 are implemented as magnetic magnets, and the two second reflective magnetic parts 1272 are implemented as magnetic yokes. Since the two first reflective magnetic parts 1271 implemented as magnetic magnets are farther away from the edge of the reflective module 10 than the two second reflective magnetic parts 1272 implemented as magnetic yokes, the magnetic interference generated by the reflective magnetic part 127 to the outside can be reduced. Accordingly, in order to further reduce the magnetic interference problem, the two first reflective magnetic parts 1271 are implemented as magnetic multi-pole magnets. It should be understood that the outward-expanding magnetic flux lines of the multi-pole magnet are closer to the outward-expanding magnetic flux lines of the monopole magnet, which is beneficial to reduce magnetic leakage.

[0183] More specifically, the two first reflective magnetic parts 1271 protrude from the bottom surface of the carrier 125, and the two second reflective magnetic parts 1272 are exposed on the top surface of the reflective base 121, thereby reducing the distance between the two first reflective magnetic parts 1271 and the two second reflective magnetic parts 1272, and thereby increasing the magnetic attraction between the first reflective magnetic parts 1271 and the second reflective magnetic parts 1272. Furthermore, the positions of the frame 123 facing the two first reflective magnetic parts 1271 and the two second reflective magnetic parts 1272 are respectively recessed inward to provide avoidance space. It should be understood that the positions of the frame 123 facing the two first reflective magnetic parts 1271 and the two second reflective magnetic parts 1272 can also directly form two through grooves to provide avoidance space. For example, as shown in Figure 19, the frame 123 directly forms two through slots facing the positions of the two first reflective magnetic parts 1271 and the two second reflective magnetic parts 1272, and the two first reflective magnetic parts 1271 directly pass through the two through slots respectively, so that the distance between the first magnetic part and the second magnetic part is not limited by the setting of the frame 123.

[0184] In one example, the bottom surface of the carrier 125 is recessed inward to form two carrier magnetic attraction grooves 1256. Two first reflective magnetic members 1271 are fixed to the bottom surface of the carrier 125 by being respectively installed in the two carrier magnetic attraction grooves 1256. Two second reflective magnetic members 1272 are respectively fixed to the top of the reflective base 1211 of the reflective base 121 by gluing or insert injection molding. To maintain a sufficient gap between the first reflective magnetic member 1271 and the second reflective magnetic member 1272 while still generating sufficient magnetic attraction, the area of ​​the second reflective magnetic member 1272 can be increased. Accordingly, in one specific example, the projection of the first reflective magnetic member 1271 in the direction of the first axis Y falls within the second reflective magnetic member 1272. That is, the area of ​​the projection of the first reflective magnetic member 1271 in the direction of the first axis Y is smaller than the area of ​​the projection of the second reflective magnetic member 1272 in the direction of the first axis Y. It is worth mentioning that in order to facilitate the installation of the two second reflective magnetic parts 1272, a magnetic connection part 1273 can be further provided between the two second reflective magnetic parts 1272. The magnetic connection part 1273 has an opening in the middle to avoid the rotating shaft support part 1221. The magnetic connection part 1273 protrudes downward so that it can be fixed in the reflective base 121 by insert injection molding.

[0185] Here, to facilitate the installation of the first reflective magnetic members 1271, the two first reflective magnetic members 1271 are also magnetically attracted to the reflective magnetic conductive sheet 1265 embedded in the carrier 125. In one example, the reflective magnetic conductive sheet 1265 is exposed from the two carrier magnetic attraction grooves 1256, and the two reflective magnetic members are respectively disposed in the two carrier magnetic attraction grooves 1256 and attracted to the reflective magnetic conductive sheet 1265.

[0186] Furthermore, FIG20 shows a schematic diagram of a top view of the reflective base 121 along the direction of the first axis Y, wherein the two rotating shaft balls 1241 and the two first reflective magnetic members 1271 are projected onto the reflective base 1211 of the reflective base 121 along the direction of the first axis Y. It should be understood that when the reflective magnetic attraction portion 127 magnetically attracts the carrier 125 to the reflective base 121 through the frame 123 through magnetic attraction, the reflective magnetic attraction portion 127 also applies magnetic attraction to the first support portion 122 and the second support portion 124. However, if the magnetic attraction of the reflective magnetic attraction portion 127 does not directly act on the third axis Z of the two rotating shaft balls 1241 passing through the second support portion 124, the magnetic attraction will affect the rotation of the carrier 125 relative to the frame 123 around the third axis Z. Specifically, when the direction of the magnetic attraction of the reflective magnetic attraction portion 127 does not intersect with the third axis Z, the magnetic attraction of the reflective magnetic attraction portion 127 does not act directly on the third axis Z, which will generate a large restoring resistance, hindering the carrier 125 from rotating around the third axis Z, and thus requiring an increase in the thrust of the reflective drive assembly 12, and causing the rotation of the carrier 125 around the third axis Z relative to the frame 123 to deviate to one direction. In other words, in order to ensure the normal and stable operation of the rotation of the carrier 125 relative to the frame 123, it is necessary to control the positional relationship between the direction of the magnetic attraction of the reflective magnetic attraction portion 127 and the third axis Z. Any deviation may lead to uneven rotation or increase unnecessary thrust requirements, thereby affecting the stability and efficiency of the entire system. It is worth mentioning that the direction of the magnetic attraction of the reflective magnetic attraction portion 127 refers to the direction of the resultant force of all magnetic attractions in the reflective magnetic attraction portion 127. For example, when two magnetic attraction components are generated between the two first reflective magnetic members 1271 and the two second reflective magnetic members 1272 of the reflective magnetic attraction portion 127, the direction of the resultant of the two magnetic attraction components is the direction of the magnetic attraction of the reflective magnetic attraction portion 127. Alternatively, when the reflective magnetic attraction portion 127 generates only one magnetic attraction, the direction of the magnetic attraction is the direction of the magnetic attraction of the reflective magnetic attraction portion 127.

[0187] However, when the magnetic attraction of the reflective magnetic attraction portion 127 directly acts on the shaft support 1221 of the first support portion 122 , the shaft support 1221 will be worn, thereby damaging and affecting the accuracy of the frame 123 rotating relative to the reflective base 121 .

[0188] To address the above issues, in one example, the first axis Y about which the frame 123 rotates relative to the reflective base 121 and the third axis Z about which the carrier 125 rotates relative to the frame 123 do not intersect, and a certain distance exists between the first axis Y and the third axis Z. Accordingly, when viewed along the first axis Y, the first axis Y does not lie on the third axis Z. The third axis Z lies between the rotation shaft support 1221 and the at least two auxiliary balls 1222. In one specific example, the distance from the rotation shaft support 1221 to the third axis Z is less than the distance from the at least two auxiliary balls 1222 to the third axis Z. Furthermore, when viewed along the first axis Y, the direction of the magnetic attraction of the reflective magnetic portion 127 intersects the third axis Z, and the magnetic attraction of the reflective magnetic portion 127 acts directly on the third axis Z. The reflective magnetic portion 127 is symmetrically arranged about the third axis Z. In one specific example, when viewed along the first axis Y, the two first reflective magnetic members 1271 are symmetrically arranged about the third axis Z.

[0189] It is worth noting that since the rotating magnets that drive the carrier 125 to rotate about the first axis Y are all disposed on the back side of the carrier 125 away from the lens module 20, the farther the first axis Y is from the reflection drive unit 126, the greater the torque of the driving force provided by the reflection drive unit 126 for driving the carrier 125 to rotate about the first axis Y. Therefore, in one example of the present application, the vertical distance L4 between the first axis Y and the center of the first rotating magnet 1261 of the reflection drive unit 126 is greater than or equal to 2 mm. This ensures that the driving force of the reflection drive unit 126 to drive the carrier 125 to rotate about the first axis Y has a sufficiently large torque, thereby being able to drive the carrier 125, the frame 123, and other components fixed thereto to rotate. Furthermore, considering the limitations on the operating current of the rotating coil in mobile electronic devices, a higher operating current of the rotating coil results in greater power consumption for the reflection drive assembly 12. Therefore, increasing the vertical distance L4 between the first axis Y and the center of the first rotating magnet 1261 can be considered to reduce the maximum operating current requirement of the first rotating coil 1262. For example, the maximum operating current of the first rotating coil 1262 can be designed to be below 100 mA. In one example, the vertical distance L4 between the first axis Y and the center of the first rotating magnet 1261 is greater than or equal to 3.5 mm.

[0190] However, when the distance between the first axis Y and the third axis Z is too large, the reflective surface of the reflective element 11 fixed to the carrier 125 may be insufficiently utilized, which is detrimental to the overall design of the reflective module 10. Therefore, further considering the spacing design between the third axis Z and the first axis Y, and in combination with the position of the first axis Y, the vertical distance L4 between the first axis Y and the center of the first rotating magnet 1261 can be 2 mm to 5.5 mm, more preferably 3.5 mm to 5.5 mm, both inclusive. Furthermore, the first axis Y is located on the side of the third axis Z away from the reflective driver 126. Consequently, under similar conditions, the driving force provided by the reflective driver 126 for rotation about the first axis Y can have a greater torque, thereby reducing the operating current requirement for the first rotating coil 1262 and, consequently, reducing the power consumption of the reflective module 10.

[0191] It's worth noting that during use of the camera module, it's important to consider that the gravity of the carrier 125 and the movable portion, consisting of the components secured thereto, can hinder the carrier 125 from being supported on the reflective base 121 via the magnetic attraction of the reflective magnetic portion 127 through the frame 123 as the reflective module 10 changes its posture. In severe cases, this issue could cause the carrier 125 to fall off. To mitigate this possibility, the center of gravity of the movable portion can be lowered, bringing it closer to the reflective base 1211, thereby reducing the torque generated by the weight of the movable portion. Accordingly, as shown in Figures 12B, 14, and 15, in one example of the present application, the top surface of the first rotating magnet 1261 is lower than the top surface of the second rotating magnet 1263, thereby lowering the center of gravity of the movable portion. Furthermore, in one specific example, the dimension of the first rotating magnet 1261 along the first axis Y is also smaller than the dimension of the second rotating magnet 1263 along the first axis Y.

[0192] Furthermore, in conjunction with FIG10 , in one example of the present application, the first axis Y and the third axis Z are not located in the same plane, and are perpendicular to each other but do not intersect; the second axis X and the third axis Z are not located in the same plane, and are perpendicular to each other but do not intersect; the first axis Y and the second axis X are located in the same plane, and are perpendicular to each other and intersect. In other words, the first axis Y and the third axis Z do not intersect each other, and are spatially perpendicular to each other; the second axis X and the third axis Z do not intersect each other, and are spatially perpendicular to each other; the first axis Y and the second axis X intersect and are perpendicular to each other. Specifically, the intersection of the first axis Y and the second axis X is not located on the light reflecting surface 18 of the reflective element 11, but is located above the light reflecting surface 18 of the reflective element 11. It should be understood that such a configuration reduces the design difficulty of the reflective drive assembly 12, and the rotation axis design of the reflective drive assembly 12 does not need to be limited to the optical axis position of the lens module 20. Of course, in another example of the present application, the intersection of the first axis Y and the second axis X may also be located on the light reflecting surface 18 of the reflecting element 11 .

[0193] It should be understood that in another example of the present application, the first axis Y and the second axis X may also not intersect each other, so that the first axis Y and the second axis X are spatially perpendicular to each other, that is, any two axes among the first axis Y, the second axis X, and the third axis Z do not intersect each other, the first axis Y, the second axis X, and the third axis Z are spatially perpendicular to each other, and any two axes among the first axis Y, the second axis X, and the third axis Z do not extend in the same plane.

[0194] Furthermore, as shown in FIG11 , the reflective drive assembly 12 further includes a reflective cover 129, which is fixed to the reflective base 121 and forms a housing space for accommodating other components of the reflective drive assembly 12. Specifically, the reflective cover 129 includes a reflective cover top 1291 and a first reflective cover side portion 1292, a second reflective cover side portion 1293, and a third reflective cover side portion 1294 fixed to the reflective cover top 1291. The reflective cover top 1291 has an incident window 12911, the first reflective cover side portion 1292 and the third reflective cover side portion 1294 are disposed on opposite sides of the reflective cover top 1291, and the second reflective cover side portion 1293 connects the first reflective cover side portion 1292 and the third reflective cover side portion 1294. The second reflective cover side portion 1293 is located on a side away from the lens module 20. In this way, light can enter the reflective module 10 through the incident window 12911 on the top of the reflective cover 1291 and leave the reflective module 10 from the side of the reflective cover 129 where the side portion of the reflective cover 129 is not provided.

[0195] In another example of the present application, as shown in FIG21 , the second rotation sensing element 1282 is still disposed in the middle of the second rotating coil 1264 and faces the second rotating magnet 1263. The rotation position sensing unit 128 further includes a first rotation sensing magnet 1283 fixed to the carrier 125. The first rotation sensing element 1281 is disposed opposite the first rotation sensing magnet 1283 and acquires information about the rotational posture change of the carrier 125 about the first axis Y by sensing changes in the magnetic field information of the first rotation sensing magnet 1283. Specifically, the first rotation sensing magnet 1283 is fixed in a groove on the first carrier side portion 1252 of the carrier 125. The first rotation sensing element 1281 is fixed to the first reflective base side portion 1212, and the second rotation sensing element 1282 is fixed to the second reflective base side portion 1213.

[0196] In this example, the first rotation sensing element 1281 and the first rotation sensing magnet 1283 are located on a plane passing through the third axis Z and perpendicular to the first axis Y. This can reduce the magnetic crosstalk problem encountered by the first rotation sensing element 1281 during the sensing process. Specifically, the first rotation sensing element 1281 is used to sense the rotation of the carrier 125 around the first axis Y, and the carrier 125 also rotates around the third axis Z relative to the frame 123. The first rotation sensing element 1281 and the first rotation sensing magnet 1283 are arranged on a plane passing through the third axis Z and perpendicular to the first axis Y. This can reduce the impact of the rotation of the carrier 125 around the third axis Z on the sensing function of the first rotation sensing element 1281. Furthermore, when viewed along the direction of the third axis Z, the distance between the first rotation sensing element 1281 and the first axis Y is less than or equal to 3.5 mm to ensure the symmetry of the sensing of the first rotation sensing element 1281. Specifically, the smaller the distance between the first rotation sensing element 1281 and the first axis Y, the better the sensing symmetry of the first rotation sensing element 1281. However, viewed along the direction of the third axis Z, since the second support portion 124 is disposed near the first axis Y, it is difficult for the first rotation sensing magnet 1283 to be disposed near the first axis Y. Therefore, viewed along the direction of the third axis Z, the distance between the first rotation sensing element 1281 and the first axis Y can be 0.5 mm to 3.5 mm (inclusive). More specifically, since the third axis Z is located between the first axis Y and the reflection drive portion 126, the first rotation sensing element 1281 and the first rotation sensing magnet 1283 are disposed on the side of the first axis Y away from the third axis Z, that is, the first rotation sensing element 1281 and the first rotation sensing magnet 1283 are disposed on the side of the first axis Y away from the second support portion 124. In this way, viewed along the direction of the third axis Z, the distance between the first rotation sensing element 1281 and the first axis Y can be set closer, and the distance between the first rotation sensing element 1281 and the reflection driving unit 126 can be set farther, further reducing the interference of the reflection driving unit 126 on the first rotation sensing element 1281.

[0197] In summary, the camera module and the reflection drive assembly 12 based on the embodiment of the present application are explained, wherein the reflection drive assembly 12 drives the reflection element 11 to rotate through a reasonable structural arrangement to achieve optical image stabilization or camera angle adjustment of the camera module. Specifically, the reflection drive assembly 12 described in the present application can drive the reflection element 11 to rotate around the first axis Y±2.2°, and can drive the reflection element 11 to rotate around the third axis Z±1.2°, where the symbol ± indicates that the reflection element 11 can rotate in two opposite directions clockwise or counterclockwise around the rotation axis (first axis Y or third axis Z) based on the initial position.

[0198] 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-described embodiments. The above-described embodiments and the specification merely illustrate the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A reflection module, characterized in that: include: a reflective element, wherein the reflective element reflects light propagating along a first axis in a direction of a second axis intersecting the first axis at a certain angle; as well as A reflection drive assembly, which includes a reflection base, a frame that carries the reflection element and can rotate around the first axis, and a rotating shaft support and at least two auxiliary balls arranged between the reflection base and the frame. The rotating shaft support is passed through the first axis and is fixed to the reflection base or the frame. The at least two auxiliary balls are arranged between the at least two auxiliary upper grooves of the frame and the at least two auxiliary lower grooves of the reflection base. One of the at least two auxiliary upper grooves and the at least two auxiliary lower grooves is a straight groove and extends along the tangent direction of a virtual circle whose center is located on the first axis.

2. The reflection module according to claim 1, characterized in that The symmetry axes of at least two of the linear grooves along the length direction are tangent to the virtual circle.

3. The reflection module according to claim 1, characterized in that The other of the at least two auxiliary upper grooves and the at least two auxiliary lower grooves is a positioning groove for positioning the auxiliary balls.

4. The reflection module according to claim 3, characterized in that: The at least two auxiliary upper grooves are the linear grooves, the at least two auxiliary lower grooves are the positioning grooves, and the maximum gap between the at least two auxiliary balls and the at least two auxiliary lower grooves is smaller than the maximum gap between the at least two auxiliary balls and the at least two auxiliary upper grooves.

5. The reflection module according to claim 4, characterized in that: The initial position of each auxiliary lower groove is projected onto the middle area of ​​the corresponding auxiliary upper groove along the direction of the first axis.

6. The reflection module according to claim 1, characterized in that: The rotating shaft support is fixed to the reflecting base of the reflecting base, and the rotating shaft support protrudes from the top surface of the reflecting base facing the frame. The bottom surface of the frame facing the reflecting base has a rotating shaft positioning groove, and the rotating shaft support is accommodated in the rotating shaft positioning groove and maintains contact with the rotating shaft positioning groove.

7. The reflection module according to claim 1, characterized in that: The reflection driving assembly further includes a carrier and a second supporting portion arranged between the carrier and the frame, and the reflection element is fixed to the carrier.

8. The reflection module according to claim 7, characterized in that: The second supporting portion includes two rotating shaft balls, which have the same height and are passed through by a third axis perpendicular to the first axis and the second axis. The carrier can rotate around the third axis relative to the frame.

9. The reflection module according to claim 8, characterized in that: The reflective driving assembly further includes a reflective magnetic attraction portion, and the carrier is supported on the reflective base via the frame by the magnetic attraction force of the reflective magnetic attraction portion.

10. The reflection module according to claim 9, characterized in that: Viewed along the direction of the first axis, the direction of the magnetic attraction of the reflective magnetic attraction portion intersects with the third axis.

11. The reflection module according to claim 10, characterized in that: The first axis and the third axis do not intersect, and the distance from the rotating shaft support to the third axis is smaller than the distance from the at least two auxiliary balls to the third axis.

12. The reflection module according to any one of claims 7 to 11, characterized in that: The reflection drive assembly also includes a reflection drive unit for driving the reflection element to rotate, and the reflection drive unit includes at least two rotating magnets fixed to the carrier and at least two rotating coils fixed to the reflection base, and the at least two rotating magnets are arranged opposite to the at least two rotating coils.

13. The reflection module according to claim 12, characterized in that: The reflection drive component also includes a rotation position sensing unit, which includes a first rotation sensing element and a second rotation sensing element. The rotation position sensing unit obtains the magnetic field change information of the reflection magnetic attraction unit of the reflection drive component and the magnetic field change information of the at least two rotating magnets through the first rotation sensing element and the second rotation sensing element respectively to obtain the posture change information of the reflection element.

14. A camera module, characterized in that: include: The reflection module according to any one of claims 1 to 13; a lens module, wherein the lens module is held on a light reflection path of the reflection module; as well as An imaging module receives the light emitted by the lens module to perform imaging.

15. A reflection drive component, characterized in that: include: reflective base; a carrier, the carrier being rotatably disposed on the reflective base; as well as A reflection drive unit, comprising at least one first rotating magnet and at least one first rotating coil for driving the carrier to rotate around a first axis, and at least one second rotating magnet and at least one second rotating coil for driving the carrier to rotate around a third axis perpendicular to the first axis, wherein the first rotating magnet and the first rotating coil are arranged relative to each other along a second axis perpendicular to the first axis and the third axis, and the second rotating magnet and the second rotating coil are also arranged relative to each other along the second axis.

16. The reflection drive assembly according to claim 15, characterized in that: The surface of the first rotating magnet facing the first rotating coil has at least two magnetic pole regions arranged along the third axis, and the surface of the second rotating magnet facing the second rotating coil has at least two magnetic pole regions arranged along the first axis.

17. The reflection drive assembly according to claim 16, characterized in that: The number of the first rotating magnets is two, the number of the second rotating magnets is one, the number of the first rotating coils is two, the number of the second rotating coils is one, two first rotating magnets are arranged on both sides of one second rotating magnet, and two first rotating coils are arranged on both sides of one second rotating coil.

18. The reflection drive assembly according to claim 17, characterized in that: A gap between the first rotating coil and the first rotating magnet is not smaller than a gap between the second rotating coil and the second rotating magnet, and a thickness of the first rotating coil is smaller than a thickness of the second rotating coil.

19. The reflective drive assembly according to claim 16, wherein: The length direction of the first rotating coil and the length direction of the second rotating coil are perpendicular to each other.

20. The reflection drive assembly according to any one of claims 15 to 19, characterized in that: The first rotating magnet and the second rotating magnet are fixed to the carrier, and the first rotating coil and the second rotating coil are fixed to the reflective base.

21. The reflective drive assembly according to claim 20, wherein: The first axis and the third axis do not intersect each other, and the first axis and the third axis are spatially perpendicular to each other.

22. The reflective drive assembly according to claim 21, wherein: The second axis and the third axis do not intersect each other, and the second axis and the third axis are in a spatially perpendicular relationship to each other.

23. The reflective drive assembly according to claim 20, wherein: The vertical distance between the first axis and the center of the first rotating magnet is 2 mm to 5.5 mm.

24. The reflection drive assembly according to claim 23, characterized in that The first axis is located on a side of the third axis away from the reflection driving unit.

25. The reflection drive assembly according to claim 20, characterized in that The reflection drive component also includes a first rotation sensing element and a second rotation sensing element for obtaining posture change information of the carrier, the projection of the first rotation sensing element along the direction of the second axis overlaps with the third axis, and the projection of the second rotation sensing element along the direction of the second axis overlaps with the first axis.

26. The reflective drive assembly according to claim 20, wherein: A height of a top surface of the first rotating magnet is lower than a height of a top surface of the second rotating magnet.

27. The reflective drive assembly according to claim 26, wherein: The reflection driving assembly further includes a frame, a first supporting portion disposed between the reflection base and the frame, and a second supporting portion disposed between the carrier and the frame.

28. The reflection drive assembly according to claim 27, characterized in that The reflective drive assembly also includes a reflective magnetic attraction portion, and the carrier is supported on the reflective base through the frame by the magnetic attraction of the reflective magnetic attraction portion. When viewed along the direction of the first axis, the direction of the magnetic attraction of the reflective magnetic attraction portion intersects with the third axis.

29. The reflective drive assembly according to claim 28, wherein: The reflective magnetic attraction portion includes two first reflective magnetic parts and two second reflective magnetic parts. The two first reflective magnetic parts are respectively fixed to the bottom surface of the carrier, and the two second reflective magnetic parts are respectively fixed to the top of the reflective base of the reflective base. Viewed along the direction of the first axis, the two first reflective magnetic parts are symmetrically arranged about the third axis.

30. The reflective drive assembly according to claim 27, wherein: The first supporting portion includes a rotating shaft support and at least two auxiliary balls, the rotating shaft support is passed through the first shaft and is fixed to the reflecting base or the frame, the at least two auxiliary balls are arranged between the at least two auxiliary upper grooves of the frame and the at least two auxiliary lower grooves of the reflecting base, and one of the at least two auxiliary upper grooves and the at least two auxiliary lower grooves is a straight groove and extends along the tangent direction of a virtual circle with the first shaft as the center.

31. The reflective drive assembly according to claim 30, wherein: The at least two auxiliary upper grooves are the linear grooves, and the at least two auxiliary lower grooves are positioning grooves for positioning the auxiliary balls. The initial position of each of the auxiliary lower grooves is projected onto the middle area of ​​the relative auxiliary upper groove along the direction of the first axis, and the maximum gap between the at least two auxiliary balls and the at least two auxiliary lower grooves is smaller than the maximum gap between the at least two auxiliary balls and the at least two auxiliary upper grooves.

32. A camera module, characterized in that: include: A reflection module, comprising the reflection drive assembly according to any one of claims 15 to 31 and a reflection element installed in the reflection drive assembly; a lens module, wherein the lens module is held on a light reflection path of the reflection module; as well as An imaging module receives the light emitted by the lens module to perform imaging.

Images