A reflection driving assembly and a camera module

Abstract

The application discloses a reflection driving assembly and a camera module. The reflection driving assembly comprises a reflection base, a carrier, a reflection driving part, the carrier is rotatably arranged on the reflection base, the carrier is used for fixing a reflection element, the reflection element reflects light propagating along a first axis to a direction of a second axis intersecting the first axis, the reflection driving part comprises at least one first rotation magnet and at least one first rotation coil used for driving the carrier to rotate around the first axis, and at least one second rotation magnet and at least one second rotation coil used for driving the carrier to rotate around a third axis, a direction vector of the first axis and a direction vector of the third axis are perpendicular to each other, and the first axis and the third axis do not intersect each other.

Description

Technical Field

[0001] This application relates to the field of camera technology, and more particularly to a reflection driving component and a camera module. Background Technology

[0002] With the widespread adoption of mobile electronic devices, the technology behind camera modules used in these devices to help users capture images has developed and progressed rapidly. Currently, consumers in the market have an increasing demand for long-distance shooting capabilities from camera modules integrated into mobile electronic devices.

[0003] Camera modules with telephoto capabilities require a long focal length to capture clear images of distant subjects. However, a long focal length implies a longer overall length for the camera module. Therefore, at least one reflective module can be incorporated into the camera module to fold the optical path, thus preventing the module from becoming excessively long. A reflection drive component can be included within the reflective module to adjust the optical path, further improving the imaging capabilities of the camera module.

[0004] Accordingly, this application provides a reflection driving component and a camera module having the reflection driving component. Summary of the Invention

[0005] One objective of this application is to provide a reflection driving component and a camera module that overcomes the shortcomings of the prior art, optimizes the structure of the reflection driving component, and improves the imaging quality of the camera module having the reflection driving component.

[0006] According to one aspect of this application, a reflection driving component is provided, comprising:

[0007] Reflector base;

[0008] A carrier, rotatably disposed on the reflective base, the carrier serving to fix a reflective element that reflects light propagating along a first axis toward a second axis intersecting the first axis; and

[0009] The reflective drive unit includes at least one first rotating magnet and at least one first rotating coil for driving the carrier to rotate about the first axis, and at least one second rotating magnet and at least one second rotating coil for driving the carrier to rotate about the third axis, wherein the direction vectors of the first axis and the third axis are perpendicular to each other and do not intersect each other.

[0010] In some embodiments, at least two rotating magnet-rotating coil pairs for driving the carrier to rotate about the first axis and the third axis are disposed on the same side of the carrier, the first axis being located on the side of the third axis away from the reflective drive unit.

[0011] 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. The vertical distance between the first axis and the center of the first rotating magnet is 2mm-5.5mm.

[0012] In some embodiments, the reflective drive assembly further includes a reflective magnetic attraction part, and the carrier is supported on the reflective base by the magnetic attraction force of the reflective magnetic attraction part. When viewed along the first axis, the direction of the magnetic attraction force of the reflective magnetic attraction part intersects with the third axis.

[0013] In some embodiments, the reflective magnetic attraction part includes two first reflective magnetic elements and two second reflective magnetic elements. The two first reflective magnetic elements are respectively fixed to the bottom surface of the carrier, and the two second reflective magnetic elements are respectively fixed to the top of the reflective base of the reflective base. When viewed along the first axis, the two first reflective magnetic elements are symmetrically arranged about the third axis.

[0014] 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.

[0015] In some embodiments, the first rotating magnet and the first rotating coil are arranged opposite each other along the second axis perpendicular to the first axis and the third axis. The surface of the first rotating magnet facing the first rotating coil has at least two magnetic pole regions arranged along the direction of the third axis. The second rotating magnet and the second rotating coil are also arranged opposite each other along the second axis. The surface of the second rotating magnet facing the second rotating coil has at least two magnetic pole regions arranged along the direction of the first axis.

[0016] In some embodiments, the reflection driving 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.

[0017] In some embodiments, the first support includes a pivot support member through which the first axis passes and is fixed to one of the reflective base and the frame. The other of the reflective base and the frame is provided with a pivot positioning groove. The frame is restricted to rotate about the first axis relative to the reflective base by the limiting relationship between the pivot positioning groove and the pivot support member.

[0018] In some embodiments, the first support portion further includes at least two auxiliary balls for assisting the pivot support member in supporting the frame. The at least two auxiliary balls are disposed between at least two auxiliary upper grooves of the frame and at least two auxiliary lower grooves of the reflective 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 centered on the first axis.

[0019] In some embodiments, the second support includes two pivot balls, the frame forms a first lower pivot groove and a second lower pivot groove, the carrier forms a first upper pivot groove and a second upper pivot groove, the pivot balls are accommodated between the upper pivot groove and the lower pivot groove and are passed through by the third shaft, so that the carrier can rotate relative to the frame about the third shaft.

[0020] In some embodiments, the reflection driving assembly further includes a first rotation sensing element and a second rotation sensing element for acquiring attitude change information of the carrier, wherein 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.

[0021] According to another aspect of this application, a camera module is also provided, comprising:

[0022] A reflection module, the reflection module comprising any of the preceding reflection driving components and a reflection element mounted in the reflection driving component;

[0023] Lens module, the lens module being held on the light reflection path of the reflective module; and

[0024] An imaging module receives light emitted from the lens module and performs imaging.

[0025] Additional embodiments and features are set forth in part in the following description, and those skilled in the art will understand them upon review of the specification or through practice of the disclosed subject matter. Further understanding of the features and advantages of this application may be achieved by referring to the remainder of the specification and drawings, which form part of this application. Attached Figure Description

[0026] Figure 1 This is a cross-sectional schematic diagram of the camera module according to this application.

[0027] Figure 2 This is an exploded view of the reflection-driven component according to this application.

[0028] Figure 3A This is an exploded view of some components, including the carrier and frame, in the reflection-driven assembly according to this application.

[0029] Figure 3B This is a three-dimensional schematic diagram of the carrier and frame assembled according to this application.

[0030] Figure 4A and Figure 4B These are exploded top and exploded bottom views of some components, including the frame and reflective base, of the reflective drive assembly according to this application.

[0031] Figure 5 This is a perspective view of the reflective drive unit, rotational position sensing unit, and reflective magnetic attraction unit in the reflective drive assembly according to this application.

[0032] Figure 6 This is a schematic diagram showing the positional relationship between the reflective drive unit and the rotational position sensing unit in the reflective drive assembly according to this application.

[0033] Figure 7 This is a schematic diagram of the bottom surface of the framework of this application.

[0034] Figure 8 yes Figure 7 A magnified view of a specific part.

[0035] Figure 9 This is a three-dimensional schematic diagram of the carrier according to this application.

[0036] Figure 10 This is a cross-sectional schematic diagram of the reflection driving component according to this application.

[0037] Figure 11 This is a schematic diagram of the reflective base viewed from above along the first axis according to this application. Detailed Implementation

[0038] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0039] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0040] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0041] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0042] It should be noted that, as used in this application, the terms “basically,” “approximately,” and similar terms are used to indicate approximation rather than degree, and are intended to describe inherent deviations in measured or calculated values ​​that would be recognized by a person skilled in the art.

[0043] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection, a contact connection, or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0044] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used in the specification and appended claims, the singular forms “a,” “an,” and “the” are intended to also cover the plural forms unless the context otherwise expressly indicates otherwise. It will also be understood that the term “and / or” as used herein refers to and covers any and all possible combinations of one or more of the items listed in connection with the description. It will also be understood that the terms “comprising” and / or “including” as used in this specification specify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0045] Figures 1 to 11 A camera module according to some embodiments of this application and a reflection driving component 12 disposed in the camera module are shown. For example... Figure 1As shown, the camera module includes a reflection module 10, a lens module 20, and an imaging module 30. The reflection module 10 changes the direction of light propagation from the target, directing the light towards the lens module 20. The lens module 20 converges the light to the imaging module 30, which then outputs the resulting image. In other words, the reflection module 10 redirects the light from the target, the lens module 20 is positioned on the light reflection path of the reflection module 10 and receives the light from it, and the imaging module 30 is positioned on the light propagation path of the lens module 20 and receives the light emitted from it to form an image. In one example, the reflection module 10, lens module 20, and imaging module 30 are arranged sequentially along the direction of light propagation, with the reflection module 10 and imaging module 30 fixed to opposite sides of the lens module 20.

[0046] Accordingly, the reflection module 10 includes a reflection driving assembly 12 and a reflection element 11 mounted in the reflection driving assembly 12, wherein the reflection element 11 is adapted to reflect light to fold the imaging optical path of the camera module. In one example, the reflection element 11 is adapted to deflect incident light at a certain angle before it exits to the lens module 20, specifically, this angle can be 90°. In other words, the reflection element 11 reflects light propagating along the direction of the first axis Y to the direction of the second axis X, which intersects the first axis Y at a certain angle, and the angle between the first axis Y and the second axis X can be 90°. The first axis Y is parallel to or coincides with the incident optical axis of the reflection 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 reflection module 10, and 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, considering manufacturing tolerances, the angle at which the reflection element 11 deflects the light may have an error of less than 1°. Furthermore, a third axis Z is defined, which is perpendicular to the first axis Y and the second axis X.

[0047] It is worth mentioning that in this application, the perpendicularity of two axes can include the following two types: one is that the two axes intersect in the same plane and the angle of intersection is a right angle, forming a traditional perpendicular relationship; the other is that the two axes are located in different planes, and 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 among the first axis Y, the second axis X, and the third axis Z can be intersecting or spatial. When they intersect, the angle of intersection 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, such as... Figure 1As shown, the first axis Y and the third axis Z do not intersect each other, the direction vectors of the first axis Y and the third axis Z are perpendicular to each other, and the first axis Y and the third axis Z are spatially perpendicular to each other; furthermore, the second axis X and the third axis Z do not intersect each other, the direction vectors of the second axis X and the third axis Z are perpendicular to each other, and the second axis X and the third axis Z are spatially perpendicular to each other.

[0048] In a specific implementation, the reflection driving component 12 is adapted to drive the reflection element 11 to move, thereby changing the propagation path of light and thus realizing the optical image stabilization or camera angle adjustment function of the camera module. The reflection element 11 can be implemented as a prism (e.g., a triangular prism) or a mirror. 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 emitting surface 19. The light incident surface 17 and the light emitting surface 19 are perpendicular to each other, and the light reflecting surface 18 is tilted at a 45° angle relative to both the light incident surface 17 and the light emitting surface 19, so that the light can bend at a 90° angle at the light reflecting surface 18. When the reflection element 11 is implemented as a mirror, the reflection element 11 only includes the light reflecting surface 18, which is tilted at a 45° angle relative to both the incident and emitted light rays.

[0049] Lens module 20 includes an optical lens 21. The optical axis of the optical lens 21 is also the optical axis of the lens module 20. The optical axis of the optical lens 21 is set along the direction of the second axis X, so that the light reflected by the reflection module 10 enters the optical lens 21 along the direction of the second axis X and propagates to the imaging module 30 via 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 focusing, or to move along a direction perpendicular to the optical axis of the optical lens 21 to achieve optical image stabilization. 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 fixed group 211 is fixed at a distance relative to the imaging module 30 in the direction of the optical axis of the optical lens 21, and the movable group 212 is adjustable at a distance relative to the fixed group 211 or the imaging module 30 in the direction of the optical axis of the optical lens 21, thereby making the focal length of the optical lens 21 adjustable. Specifically, the optical lens 21 includes a fixed group 211 and a movable group 212, with the movable group 212 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 within the fixed lens barrel 2111, and the movable group 212 includes a movable lens barrel 2121 and at least one movable lens 2122 housed within the movable lens barrel 2121. It should be understood that the number of fixed groups 211 and movable groups 212 may also be more than one, depending on the specific requirements.

[0050] Furthermore, the lens module 20 also includes a lens drive assembly 22, in which the optical lens 21 is mounted. The lens drive assembly 22 drives the optical lens 21 to move, changing the propagation path of light, thereby achieving functions such as image stabilization, focusing, and zooming. It should be understood that the lens drive assembly 22 can drive the entire optical lens 21 to achieve focusing or image stabilization; the lens drive assembly 22 can also drive partial movement of the optical lens 21, for example, the lens drive assembly 22 can drive the movable group 212 of the optical lens 21 to move to achieve zooming or image stabilization.

[0051] The imaging module 30 includes a photosensitive component 31 and a filter component 32. The photosensitive component 31 includes a photosensitive circuit board 312 and a photosensitive chip 311 mounted on the photosensitive circuit board 312, along with electronic components (not shown). The photosensitive chip 311 is fixed to the photosensitive circuit board 312 by, for example, adhesive bonding and is electrically connected to the photosensitive circuit board 312 by, for example, wire bonding. Thus, after receiving light and forming an image, the photosensitive chip 311 is electrically connected to a mobile electronic device via the photosensitive circuit board 312. The filter component 32 includes a filter holder 322 and a filter element 321 mounted on the filter holder 322. The filter holder 322 is fixed to the photosensitive circuit board 312 by, for example, adhesive bonding, and the filter element 321 is fixed to the filter holder 322 by, for example, adhesive bonding, and is thus held in the light-sensitive path of the photosensitive chip 311. The filter element 321 filters the light entering the photosensitive chip 311.

[0052] In some examples of this application, the imaging module 30 and the lens module 20 are fixed to each other, and the reflection 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 reflection module 10 and the lens module 20 can be achieved by bonding them together with an adhesive medium (e.g., the reflective base 121 of the reflection module 10 and the lens base 221 of the lens module 20 are bonded together with an adhesive medium), or the reflection module 10 and the lens module 20 can be fixed by integral molding (e.g., the reflective base 121 of the reflection module 10 and the lens base 221 of the lens module 20 are fixed together by integral molding). In other words, the reflection module 10 and the lens module 20 use the same base, and the reflective element 11 and the optical lens 21 are mounted in the same base to form an integrated periscope camera module.

[0053] As mentioned above, the reflective element 11 is adapted to deflect the incident light at a certain angle before it exits, thereby achieving optical path deflection for imaging. Further, a reflective drive assembly 12 can be provided to drive the reflective element 11 to rotate, thereby achieving optical image stabilization or camera angle adjustment functions for the camera module. Therefore, this application provides a reflective drive assembly 12 suitable for driving the reflective element 11 to rotate.

[0054] like Figures 2 to 11As shown, the reflection drive assembly 12 includes a reflection base 121, a carrier 125, and a reflection drive section 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 section 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 at least two rotating coils are arranged opposite 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 also include a reflection drive circuit electrically connected to the at least two rotating coils and providing drive current. It should be understood that the reflection driving circuit can be implemented as a flexible circuit board attached to the reflective base 121 or as a conductive metal insert embedded in the reflective base 121.

[0055] A rotating magnet and a rotating coil are arranged opposite each other to form a rotating magnet-rotating coil pair. By energizing the rotating coil, 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 rotating coils should be at least two each. For example, the number of rotating magnets and the number of rotating coils can be two, three, four, or more, respectively.

[0056] In one example, the reflective 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 about a 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 about a third axis Z perpendicular to the first axis Y. The at least one first rotating magnet 1261 and at least one first rotating coil 1262 are arranged opposite each other along a second axis X perpendicular to the first axis Y and the third axis Z, and the at least one second rotating magnet 1263 and at least one second rotating coil 1264 are also arranged opposite each other along the second axis X.

[0057] In other words, at least two pairs of rotating magnets and rotating coils 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 ensures that the rotating magnets and rotating coils are concentrated on one side along the second axis X, so that the reflective drive assembly 12 will not cause electromagnetic interference to other devices on the other sides.

[0058] Specifically, refer to Figures 2 to 4BAs shown, 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 receiving 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 receiving cavity 1254. In this way, the reflective element 11 can rotate around the reflective base 121 along with the carrier 125, thereby allowing the reflective element 11 to rotate around the first axis Y and the third axis Z. This enables the adjustment of the angles of light incident on and out of the reflective element 11 in two directions, achieving the function of two-way image stabilization or two-way camera angle adjustment for the camera module. It should be understood that the inclined mounting surface of the carrier body 1251 can be further recessed to form a groove, which reduces the weight of the carrier 125 and lowers the requirement for driving force without affecting the installation of the reflective element 11.

[0059] 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 opposite each other 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. The second reflective base side portion 1213 is located on the side away from the light emitted from the reflective module 10, that is, on the side away from the lens module 20. Thus, the reflective base 121 forms an installation space and has an opening facing the direction of light incident on the reflective module 10 and an opening facing the direction of light exiting the reflective module 10, so that 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 first axis Y, and after being reflected by the reflective element 11, the light can also propagate to the lens module 20 along the second axis X.

[0060] In one example of this 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, realizing the moving magnet type reflective drive assembly 12. This helps to simplify the circuit design of the reflective drive assembly 12 and avoids the problem of energizing the movable parts.

[0061] Furthermore, to ensure that all rotating magnets and rotating coils are arranged opposite 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 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 1213 facing the carrier body 1251. It should be understood that the side of the carrier body 1251 facing the second reflective base side 1213 is the side of the carrier 125 away from the lens module 20, and this side of the carrier body 1251 facing the second reflective base side 1213 can also be referred to as the back side of the carrier 125. In other words, at least one first rotating magnet 1261 and 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 1213.

[0062] In one specific example, there are two first rotating magnets 1261 and one second rotating magnet 1263. The two first rotating magnets 1261 and one second rotating magnet 1263 are respectively fixed to the side of the carrier body 1251 facing the second reflective base 1213. The two first rotating magnets 1261 are positioned on either side of the second rotating magnet 1263, which balances the distribution of gravity and makes the rotation of the carrier 125 with the fixed rotating magnets more stable and balanced. In a preferred example, the two first rotating magnets 1261 are symmetrically positioned on either side of the second rotating magnet 1263.

[0063] Accordingly, the number of the first rotating coil 1262 and the second rotating coil 1264 are consistent with the number of the first rotating magnet 1261 and the second rotating magnet 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 arranged on both sides of the second rotating coil 1264, and the two first rotating coils 1262 are respectively arranged opposite to the two first rotating magnets 1261, while the second rotating coil 1264 is arranged opposite to the second rotating magnet 1263.

[0064] It is worth mentioning that setting 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, thus making it unnecessary to set the thickness of the first rotating coil 1262 to be large. The thickness of the coil can be understood as the dimension of the coil extending along the second axis X. It should be understood that when the thickness of the rotating coil is designed to be large, the wires in the rotating coil away from the rotating magnet are less affected by the magnetic field of the rotating magnet, and have little impact on the driving force. Setting two rotating coils allows the thickness of the first rotating coil 1262 to be less than necessary, while still providing sufficient driving force. Simultaneously, when the carrier 125 rotates relative to the reflective base 121 about the first axis Y, the minimum gap between the first rotating coils 1262 and the first rotating magnet 1261 on both sides will decrease. Therefore, to avoid damage caused by collisions between the first rotating coils 1262 and the first rotating magnet 1261, having a smaller thickness for the first rotating coil 1262 has a significant advantage in increasing the gap between them.

[0065] Accordingly, in one example, the gap between the first rotating coil 1262 and the first rotating magnet 1261 is not less 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 on both sides and the two first rotating magnets 1261 is not less than the gap between the second rotating coil 1264 and the second rotating magnet 1263 located in the middle. Further, as... Figure 11 As shown, the thickness of the first rotating coil 1262 is less than the thickness of the second rotating coil 1264, so that the gap design space between the two first rotating coils 1262 and the two first rotating magnets 1261 on both sides is larger.

[0066] It is worth mentioning that, in one example of this application, the first rotating magnet 1261 and the second rotating magnet 1263 can be unipolar magnets with only one N pole and one S pole; in another example of this application, the first rotating magnet 1261 and the second rotating magnet 1263 can be multipolar magnets with at least two N poles and at least two S poles, or magnets composed of multiple unipolar magnets. Regardless of whether the first rotating magnet 1261 and the second rotating magnet 1263 are multipolar magnets, refer to... Figure 5As shown, 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 N-pole region and S-pole region of the surface of the first rotating magnet 1261 facing the first rotating coil 1262 are arranged along the third axis Z, and the N-pole region and S-pole region 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.

[0067] Rotating magnets with multiple N poles and multiple S poles can provide higher magnetic flux and a more complex magnetic field distribution, thus offering finer control. It should be understood that the second rotating magnet 1263 is positioned between the two first rotating magnets 1261. When the second rotating magnet 1263 is implemented as consisting of two monopole magnets, the installation of the two monopole magnets becomes difficult due to the influence of the magnetic fields of the first rotating magnets 1261 on both sides. Therefore, in a specific example, the second rotating magnet 1263 located in the middle is a multipole magnet with two N poles and two S poles instead of being composed of two monopole magnets. Furthermore, considering that the size of the second rotating magnet 1263 in the third axis Z direction should be designed to be as large as possible to maximize the driving force for rotation around the third axis Z, and that a non-magnetic region exists in the middle portion of a multipole magnet, the two first rotating magnets 1261 can each be composed of two monopole magnets, thereby avoiding the existence of a non-magnetic region and reducing the space occupied by the two first rotating magnets 1261 in the third axis Z direction.

[0068] Furthermore, such as Figure 3BAs shown, the carrier body 1251 has a recessed rotating magnet groove 1255 on the side facing the reflector base 121, and two first rotating magnets 1261 and one second rotating magnet 1263 are fixed in the rotating magnet groove 1255. The side portion 1213 of the second reflector base has a recessed rotating coil groove 1217 on the side facing the carrier 125, and two first rotating coils 1262 and one second rotating coil 1264 are fixed to the reflector base 121 by being installed in the rotating coil groove 1217. In one example, the reflection drive unit 126 also includes a reflective magnetic guide sheet 1265, which is embedded in the carrier 125 and disposed on the side of at least two rotating magnets away from at least two rotating coils, thereby constraining the magnetic field of the rotating magnets and enhancing the magnetic field strength on the side of the rotating magnets facing the rotating coils. In a specific example, the reflective magnetic guide sheet 1265 is exposed and serves as the bottom of the rotating magnet groove 1255.

[0069] Furthermore, the reflection driving assembly 12 also includes a rotational position sensing unit 128, which is used to acquire attitude change information of the carrier 125, and then acquire attitude change information of the reflection element 11 mounted on the carrier 125. Specifically, as Figure 4A , Figure 5 and Figure 6 As shown, the rotation position sensing unit 128 includes a first rotation sensing element 1281 and a second rotation sensing element 1282 for acquiring attitude change information of the carrier 125. The first rotation sensing element 1281 and the second rotation sensing element 1282 are electrically connected to the reflection driving circuit. In one example, both the first rotation sensing element 1281 and the second rotation sensing element 1282 are fixed to the side portion 1213 of the second reflective base. The first rotation sensing element 1281 is disposed in the middle of one of the first rotation coils 1262 and faces one of the first rotation magnets 1261. The first rotation sensing element 1281 is used to sense the attitude change information of the carrier 125 rotating about the first axis Y. The second rotation sensing element 1282 is disposed in the middle of the second rotation coil 1264 and faces the second rotation magnet 1263. The second rotation sensing element 1282 is used to sense the attitude change information of the carrier 125 rotating about the third axis Z. It should be understood that in this application, the first rotation sensing element 1281 and the second rotation sensing element 1282 can be a TMR (magnetoresistive sensor), a Hall element or a driver chip, and this application is not limited to this.

[0070] More specifically, since the carrier 125 needs to rotate around the first axis Y and the third axis Z, the first rotation sensing element 1281 and the second rotation sensing element 1282, when detecting a position change in one direction, will be affected by position changes in other directions. Therefore, in order to reduce the impact of position changes in other directions on sensing accuracy, in a specific example of this application, reference is made to... Figure 6 As shown, 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 a better detection effect is achieved when the rotation sensing elements are positioned opposite the contact areas of the N-pole and S-pole regions of the rotating magnet, correspondingly, the contact areas of the first rotation sensing element 1281 and the first rotating magnet 1261 are positioned opposite each other, and the contact areas of the second rotation sensing element 1282 and the second rotating magnet 1263 are positioned opposite each other.

[0071] In this application, the interaction between the first rotating coil 1262 and the first rotating magnet 1261 is mainly the portion of the first rotating coil 1262 extending along the first axis Y. Therefore, the first rotating coil 1262 has a length direction extending along the first axis Y. The interaction between the second rotating coil 1264 and the second rotating magnet 1263 is mainly the portion of the second rotating coil 1264 extending along the third axis Z. Therefore, the second rotating coil 1264 has a length direction 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 a 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.

[0072] Furthermore, continue to refer to Figures 2 to 4BIn this application, the reflection driving 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. Thus, the carrier 125 is rotatably disposed on the reflection base 121, and the frame 123 indirectly supports the reflection element 11 by supporting the carrier 125. Specifically, the carrier 125 rotates relative to the frame 123 around the third axis Z, and the frame 123 rotates relative to the reflective base 121 around the first axis Y. 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 with the frame 123 relative to the reflective base 121 around the first axis Y. In this way, the reflective element 11 can rotate around the first axis Y and the third axis Z, thereby adjusting the angle of light incident and exiting the reflective element 11 in two directions, and realizing the function of two-way image stabilization or two-way camera angle adjustment of the camera module.

[0073] 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 pivot support member 1221 and at least two auxiliary balls 1222. The pivot support member 1221 is passed through by a first shaft Y and 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 pivot support 1221 is fixed to the reflective substrate 1211 of the reflective base 121. The pivot 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 has a pivot positioning groove 1234. The pivot support 1221 is accommodated in the pivot positioning groove 1234 and keeps in contact with the pivot positioning groove 1234. The pivot support 1221 and the pivot positioning groove 1234 are arranged opposite to each other along the direction of the first axis Y. Specifically, the position of the pivot positioning groove 1234 corresponds to the position of the pivot support 1221. Both the pivot positioning groove 1234 and the pivot support 1221 are passed through by the first axis Y. The shape of the pivot support 1221 matches the shape of the pivot positioning groove 1234. The pivot support 1221 and the pivot positioning groove 1234 mutually limit each other. The frame 123 is restricted to rotate relative to the reflective base 121 around the first axis Y through the limiting relationship between the pivot positioning groove 1234 and the pivot support 1221. At this time, the first axis Y is the rotation axis of the frame 123. The first axis Y coincides with the rotation axis of the frame 123, and the frame 123 and the reflective element 11 supported on the frame 123 rotate around the first axis Y. Correspondingly, the pivot support 1221 has an arc-shaped top surface. For example, the pivot 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 molding difficulty of 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 less likely for the frame 123 to deviate during rotation. The pivot positioning groove 1234 of the frame 123 matches the shape of the pivot support 1221, further limiting the frame 123 to rotate only around 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 mentioning that since the pivot support 1221 is fixed and immovable, the shape requirements for the pivot positioning groove 1234 are reduced. The pivot positioning groove 1234 and the pivot support 1221 need to maintain at least three point contacts or line contacts to ensure that the rotation axis of the frame 123 does not deviate during rotation relative to the reflective base 121. Here, in a specific example, line contact refers to circular line contact.

[0074] Furthermore, in a specific example, the pivot support 1221 is made of metal and is embedded in the reflective substrate 1211 through an insert injection molding process, thereby maintaining the durability of the pivot support 1221. However, when the material forming the pivot positioning groove 1234 is plastic or resin, the metal pivot support 1221 is prone to causing pits in the pivot positioning groove 1234, thus affecting the rotation effect of the frame 123. Therefore, the material of the pivot support 1221 and the material forming the pivot positioning groove 1234 can be the same, for example, both the material of the pivot support 1221 and the material forming the pivot positioning groove 1234 can be metal, plastic, or resin, thereby reducing the probability of pits forming in the pivot positioning groove 1234. Specifically, the pivot support 1221 is integrally formed on the top surface of the reflective substrate 1211 through an injection molding process, thereby fixing the pivot support 1221 to the top surface of the reflective substrate 1211.

[0075] It should be understood that in other examples of this application, the pivot support 1221 may also be fixed to the bottom surface of the frame 123, and correspondingly, the top surface of the reflective substrate 1211 has a pivot positioning groove 1234. In other words, the pivot support 1221 is fixed to one of the reflective substrate 121 and the frame 123, and the other of the reflective substrate 121 and the frame 123 has a pivot positioning groove 1234 on the side facing the pivot support 1221.

[0076] Furthermore, the first support portion 122 also includes at least two auxiliary balls 1222 for assisting the pivot support 1221 in supporting the frame 123. The pivot support 1221 and the at least two auxiliary balls 1222 form a support plane for supporting the frame 123, thereby preventing unnecessary tilting of the frame 123 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 pivot support 1221 protruding from the reflective substrate 1211, thus providing a horizontal support plane. The diameter of the auxiliary balls 1222 is 0.6-1.2 mm, including both ends; in a specific example, the diameter of the auxiliary balls 1222 is 0.9 mm.

[0077] To limit 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 at least two auxiliary lower grooves 1216 correspond to each other and respectively form a movement space for at least two balls. The at least two auxiliary balls 1222 are disposed 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 is accommodated between one auxiliary upper groove 1235 and one auxiliary lower groove 1216. For example, in this application... Figure 4A As shown, there are two auxiliary balls 1222, and correspondingly, there are also two auxiliary upper grooves 1235 and two auxiliary lower grooves 1216. It should be understood that, to improve the reliability of the reflective drive assembly 12, the depth of the auxiliary upper groove 1235 and the auxiliary lower groove 1216 is less than the radius of the auxiliary balls 1222, so that when the auxiliary balls 1222 are placed in the auxiliary upper groove 1235 or the auxiliary lower groove 1216, at least half of the auxiliary balls 1222 are exposed outside the auxiliary upper groove 1235 or the auxiliary lower groove 1216.

[0078] Furthermore, the frame 123 also has an embedded auxiliary ball bearing support metal part 1236. The auxiliary ball bearing support metal part 1236 is embedded in the frame 123 by an insert injection molding process and is exposed as the bottom of the auxiliary upper groove 1235, thereby enhancing the structure of the frame 123 while making the auxiliary upper groove 1235 have a harder bottom.

[0079] In this application, the limiting relationship between the pivot support 1221 and the pivot positioning groove 1234 provides the rotation axis for the frame 123 to rotate. At least two auxiliary balls 1222 only serve to support the frame 123 on the reflector base 121. To reduce the resistance generated by the auxiliary balls 1222, one of the at least two auxiliary upper grooves 1235 and at least two auxiliary lower grooves 1216 is a straight groove extending along the tangent direction of a virtual circle centered on the first axis Y. The auxiliary balls 1222 are loosely accommodated in the straight groove, with the auxiliary balls 1222 having only one point of contact with the straight groove in the minimum state and only three points of contact in the maximum state. In this way, during the rotation of the frame 123 relative to the reflective base 121, the motion freedom of at least two auxiliary balls 1222 is increased, 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. Consequently, the response speed of the reflective drive assembly 12 is improved. It should be understood that a straight groove refers to a groove extending along a straight line. In this application, the aforementioned straight groove extends along the tangent direction of a virtual circle centered on the first axis Y, and the axis of symmetry of at least two straight grooves along their length is tangent to this virtual circle. In a specific example, the axis of symmetry of at least two auxiliary upper grooves 1235 or at least two auxiliary lower grooves 1216 along their length is tangent to the aforementioned virtual circle centered on the first axis Y. In other words, one of the at least two auxiliary upper grooves 1235 and at least two auxiliary lower grooves 1216 is a straight groove having an axis of symmetry along its length that is tangent to the virtual circle centered on the first axis Y. Furthermore, the straight groove has two long side groove walls and two short side groove walls. The two long side groove walls are arranged opposite each other, and the two short side groove walls are connected to the two long side groove walls respectively. The two long side groove walls are parallel to each other and extend along straight lines respectively. The connection between the two short side groove walls and the two long side groove walls can be an arc-shaped connection, which can reduce the forming difficulty of the straight groove. Accordingly, the straight groove has a rounded rectangular shape.

[0080] Furthermore, at least one of the two auxiliary upper grooves 1235 and at least two auxiliary lower grooves 1216 can also be a straight groove. However, considering that when both the two auxiliary upper grooves 1235 and at least two auxiliary lower grooves 1216 are straight grooves, when the drive frame 123 rotates relative to the reflective base 121, the position of the auxiliary ball 1222 is uncontrolled, which may result in the auxiliary ball 1222 being stuck by the auxiliary upper groove 1235 and the auxiliary lower groove 1216, affecting the rotation of the frame 123 relative to the reflective base 121 around 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 that accommodates the auxiliary ball 1222 closest to the rotation direction of the frame 123 and on the side of the auxiliary upper groove 1235 that accommodates the auxiliary ball 1222 furthest from the rotation direction of the frame 123, and the frame 123 continues to rotate relative to the reflective base 121, the auxiliary ball 1222 is clamped by the groove walls of the corresponding auxiliary upper groove 1235 and auxiliary lower groove 1216, making it difficult for the auxiliary ball 1222 to roll or translate, thus affecting the rotation of the frame 123. To solve this problem, the length of the auxiliary upper groove 1235 or auxiliary lower groove 1216 can be increased. However, increasing the length of the auxiliary upper groove 1235 or auxiliary lower groove 1216 will occupy more space in the frame 123 or reflective base 1211, causing the size of the frame 123 or reflective base 1211 to increase, which in turn leads to an increase in the size of the reflective drive assembly 12.

[0081] Therefore, in one example of this application, the other of at least two auxiliary upper grooves 1235 and at least two auxiliary lower grooves 1216 is a positioning groove for positioning the auxiliary ball 1222, which is tightly fitted and received within the positioning groove. It is worth noting that being tightly fitted and received within the positioning groove does not mean 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 within the positioning groove while being positioned. Specifically, tightly fitted means that when the auxiliary ball 1222 is centrally positioned in the positioning groove, the minimum distance between the auxiliary ball 1222 and the sidewall of the positioning groove is less than or equal to 0.1 mm, preferably less than or equal to 0.05 mm. Accordingly, "loosely positioned" means that when the auxiliary ball bearing 1222 is centrally positioned in the straight groove, the minimum distance between the auxiliary ball bearing 1222 and the long side groove wall is greater than or equal to 0.1 mm, preferably greater than or equal to 0.15 mm; the minimum distance between the auxiliary ball bearing 1222 and the short side groove wall is at least 0.2 mm greater than the travel distance of the auxiliary ball bearing 1222. Correspondingly, the maximum gap between at least two auxiliary ball bearings 1222 and at least two auxiliary lower grooves 1216 is less than the maximum gap between at least two auxiliary ball bearings 1222 and at least two auxiliary upper grooves 1235.

[0082] It should be understood that, in a specific example, at least two auxiliary lower grooves 1216 are straight grooves extending along the tangent direction of a virtual circle centered on the first axis Y, and at least two auxiliary upper grooves 1235 are positioning grooves for positioning 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 positioned by at least two auxiliary upper grooves 1235 respectively. In another specific example, at least two auxiliary upper grooves 1235 are straight grooves extending along the tangent direction of a virtual circle centered on the first axis Y, and at least two auxiliary lower grooves 1216 are positioning grooves for positioning auxiliary balls 1222. At least two auxiliary balls 1222 are loosely accommodated in at least two auxiliary upper grooves 1235, and at least two auxiliary balls 1222 are tightly accommodated in at least two auxiliary lower grooves 1216. In this case, at least two auxiliary balls 1222 are positioned by at least two auxiliary lower grooves 1216 respectively. Considering the angle of 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, straight grooves cannot position the balls. During installation, the auxiliary balls 1222 need to be placed in the positioning grooves first. Therefore, to simplify the assembly process and avoid the step of flipping the semi-finished reflective drive assembly 12 during the assembly of the auxiliary balls 1222, it is preferable to make at least two auxiliary lower grooves 1216 positioning grooves for positioning the auxiliary balls 1222. Accordingly, the gap between at least two auxiliary balls 1222 and at least two auxiliary lower grooves 1216 is smaller than the gap between at least two auxiliary balls 1222 and at least two auxiliary upper grooves 1235.

[0083] Further integration Figure 7 and Figure 8Wherein, 1216' is the projection of the auxiliary lower groove 1216 along the first axis Y onto the bottom surface of the frame 123, C is a virtual circle centered on the first axis Y, and A is 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 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 respectively arranged opposite to the two auxiliary lower grooves 1216 and form two ball movement spaces. The two auxiliary upper slots 1235 are straight slots, and the two auxiliary lower slots 1216 are positioning slots. A virtual circle C is drawn with the first axis Y as the center. The two auxiliary upper slots 1235 extend along the tangent direction of this virtual circle C. The initial position of each auxiliary lower slot 1216 is projected along the first axis Y onto the middle area of ​​the opposite auxiliary upper slot 1235. It should be understood that the initial position of the two auxiliary lower slots 1216 refers to the position of the two auxiliary lower slots 1216 when the angles at which the frame 123 can rotate relative to the reflective base 121 about the first axis Y in two opposite directions are equal. In this way, when the reflective drive assembly 12 drives the frame 123 to rotate about the first axis Y, the reflective element 11 can have a large rotation angle in both directions. In a specific example, at the initial position, the center point of the two auxiliary upper slots 1235 is located on the virtual circle C with the first axis Y as the center.

[0084] 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. Two auxiliary balls 1222 are loosely accommodated in the two auxiliary upper grooves 1235. When the auxiliary balls 1222 are centrally positioned in the auxiliary upper groove 1235, the minimum distance L2 between the auxiliary balls 1222 and the long side wall of the auxiliary upper groove 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 wall of the auxiliary upper groove 1235 is at least 0.2 mm greater than the travel distance of the auxiliary balls 1222. The travel distance of the auxiliary balls 1222 is related to the angle at which the frame 123 can rotate around the first axis Y and the distance of the auxiliary balls 1222 from the first axis Y. Furthermore, in one example, the angle α between the perpendiculars from the first axis Y to the two auxiliary upper grooves 1235 ranges from 80° to 100°, thereby providing better support for the auxiliary ball bearings 1222 during the rotation of the frame 123 without causing the frame 123 to become too large due to the arrangement of the auxiliary upper grooves 1235. In a specific example, the angle α between the perpendiculars from the first axis Y to the axis of symmetry A along the length direction of the two auxiliary upper grooves 1235 is 90°.

[0085] Two auxiliary lower grooves 1216 correspond to two auxiliary upper grooves 1235 respectively, and two auxiliary balls 1222 are respectively tightly fitted and housed in the two auxiliary lower grooves 1216. When the auxiliary balls 1222 are centrally positioned in the auxiliary lower grooves 1216, the minimum distance L1 between the auxiliary balls 1222 and the sidewalls of the auxiliary lower grooves 1216 is less than 0.1 mm, preferably less than 0.05 mm. Correspondingly, the maximum gap between the two auxiliary balls 1222 and the two auxiliary lower grooves 1216 is less than the maximum gap between the two auxiliary balls 1222 and the two auxiliary upper grooves 1235. It should be understood that "tight fit" only means that when the auxiliary ball 1222 is set 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. It does not mean that the auxiliary ball 1222 is locked in the auxiliary lower groove 1216.

[0086] It should be understood that the tight fit between the auxiliary lower groove 1216 and the auxiliary ball 1222 determines the position of the auxiliary ball 1222 relative to the frame 123. Therefore, when the frame 123 rotates relative to the reflective base 121, the position of the auxiliary ball 1222 will not be unfavorable, thus preventing it from getting stuck. This configuration has significant advantages. Furthermore, it should be understood that more auxiliary balls 1222 and auxiliary upper grooves 1235 and auxiliary lower grooves 1216 for accommodating the auxiliary balls 1222 can be provided, for example, three, four, or more. This application is not limited to this.

[0087] Further reference Figures 2 to 4B As shown, the frame 123 includes a frame body 1231 and a first frame side portion 1232 and a second frame side portion 1233 fixed to both sides 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 both sides 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 lower rotating shaft groove 12321 and a second lower rotating shaft groove 12331. The second support portion 124 includes two rotating shaft balls 1241, which are respectively accommodated in the first lower rotating shaft groove 12321 and the second lower rotating shaft groove 12331. Two pivot 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, so that the carrier 125 supported by the two pivot balls 1241 can 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 both sides of the frame body 1231 toward the carrier 125, thereby adjusting the height of the two pivot balls 1241 by means of the height of the first pivot lower groove 12321 and the second pivot lower groove 12331, and thus controlling the height of the third axis Z passing through the two pivot balls 1241. It is worth mentioning 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 rotating about the third axis Z.

[0088] To accommodate the protruding first frame side 1232 and second frame side 1233 respectively, as follows Figure 9As shown, a first carrier side recess 12521 and a second carrier side recess 12531 are respectively formed on the outer side of the first carrier side 1252 and the second carrier side 1253 (i.e. the side away from the reflective element 11), so that the first frame side 1232 can extend into the first carrier side recess 12521 of the first carrier side 1252, and the second frame side 1233 can extend into the second carrier side recess 12531 of the second carrier side 1253. Furthermore, the first carrier side 1252 facing the first lower rotating shaft groove 12321 has a corresponding first upper rotating shaft groove 12522, and the second carrier side 1253 facing the second lower rotating shaft groove 12331 has a corresponding second upper rotating shaft groove 12532. The first upper rotating shaft groove 12522 and the first lower rotating shaft groove 12321 form a ball movement space, and the second upper rotating shaft groove 12532 and the second lower rotating shaft groove 12331 also form a ball movement space. Two rotating shaft balls 1241 are respectively disposed between the first upper rotating shaft groove 12522 and the first lower rotating shaft groove 12321, and between the second upper rotating shaft groove 12532 and the second lower rotating shaft groove 12331. In this way, two rotating shaft balls 1241 are respectively disposed between the first carrier side 1252 and the first frame side 1232, and between the second carrier side 1253 and the second frame side 1233. It should be understood that the two rotating ball bearings 1241 can be rotatably disposed between the carrier 125 and the frame 123, or the two rotating ball bearings 1241 can be fixed to the carrier 125 or the frame 123.

[0089] Specifically, in one example, the first lower shaft groove 12321 and the second lower shaft groove 12331 each maintain at least three point contacts or line contacts with two shaft balls 1241, thereby defining the two shaft balls 1241 respectively in the first lower shaft groove 12321 and the second lower shaft groove 12331. One of the first upper shaft groove 12522 and the second upper shaft groove 12532 maintains at least three point contacts or line contacts with one of the shaft balls 1241, while the other of the first upper shaft groove 12522 and the second upper shaft groove 12532 maintains only two point contacts with the other shaft ball 1241. For example, the first upper shaft groove 12522 maintains at least three point contacts or line contacts with one of the shaft balls 1241, while the second upper shaft groove 12532 maintains only two point contacts with the other shaft ball 1241. In this way, the carrier 125 can be positioned on the frame 123 by one of the rotating ball bearings 1241, while the other rotating ball bearing 1241 does not play a positioning role. Therefore, when the carrier 125 is supported on the frame 123 by the two rotating ball bearings 1241, the two rotating ball bearings 1241 will not be difficult to position together between the first upper rotating groove 12522 and the first lower rotating groove 12321, or between the second upper rotating groove 12532 and the second lower rotating groove 12331, due to manufacturing tolerances. In a specific example, line contact refers to circular line contact.

[0090] Continue to refer to Figure 4A and Figure 9 As shown, the first lower shaft groove 12321, the second lower shaft groove 12331, and the first upper shaft groove 12522 are all frustum-shaped grooves. The second upper shaft groove 12532 is a groove extending along the direction of the third axis Z and having a trapezoidal cross section. Thus, one of the shaft balls 1241 maintains line contact with the first lower shaft groove 12321 and the first upper shaft groove 12522 respectively, and the other shaft ball 1241 maintains line contact with the second lower shaft groove 12331 and two-point contact with the second upper shaft groove 12532.

[0091] Accordingly, in this application, the two pivot balls 1241 and at least two auxiliary balls 1222 are respectively set at different heights. However, the two pivot balls 1241 and at least two auxiliary balls 1222 can be set in the reflection drive assembly 12 in the height direction (that is, the direction of the first axis Y). This makes the assembly of the reflection drive assembly 12 simple, and only requires stacking the components along the height direction.

[0092] In one example of this application, such as Figure 3AAs shown, a carrier buffer 1257 is also fixed to the surface of the carrier 125. Specifically, the carrier buffer 1257 is fixed to the surface of the carrier 125 by, for example, gluing or secondary injection molding, so as to provide a cushioning effect when the carrier 125 collides with the frame 123 or the reflector base 121. The carrier buffer 1257 can be made of a flexible material such as silicone.

[0093] It is worth mentioning that, as mentioned above, considering that the reflective base 121 has an opening facing the light emission 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. Thus, 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 thus stop rotating.

[0094] Furthermore, such as Figure 5 , Figure 9 and Figure 10 As shown, the reflective drive assembly 12 also includes a reflective magnetic attraction part 127. The reflective magnetic attraction part 127 includes two first reflective magnetic elements 1271 and two second reflective magnetic elements 1272. The two first reflective magnetic elements 1271 are respectively fixed to the bottom surface of the carrier 125, and the two second reflective magnetic elements 1272 are respectively fixed to the top of the reflective base 1211 of the reflective base 121. The two first reflective magnetic elements 1271 and the two second reflective magnetic elements 1272 magnetically attract each other, thereby the carrier 125 is magnetically attracted to the top surface of the reflective base 121 through the frame 123. Correspondingly, the carrier 125 is supported on the reflective base 121 through the frame 123 by the magnetic attraction force of the reflective magnetic attraction part 127. In this embodiment, one of the first reflective magnetic element 1271 and the second reflective magnetic element 1272 is implemented as a magnet, and the other of the first reflective magnetic element 1271 and the second reflective magnetic element 1272 is made of a material that can be attracted by a magnet. For example, the other of the first reflective magnetic element 1271 and the second reflective magnetic element 1272 can be implemented as a magnet or a magnetic yoke.

[0095] In one example of this application, two first reflective magnetic elements 1271 are implemented as magnetic attracting magnets, and two second reflective magnetic elements 1272 are implemented as magnetic attracting yokes. Since the two first reflective magnetic elements 1271 implemented as magnetic attracting magnets are farther from the edge of the reflective module 10 than the two second reflective magnetic elements 1272 implemented as magnetic attracting yokes, the magnetic interference generated by the reflective magnetic attracting part 127 can be reduced. Accordingly, to further reduce this magnetic interference problem, the two first reflective magnetic elements 1271 are implemented as magnetic attracting multipole magnets. It should be understood that the outward magnetic field lines of multipole magnets are closer than those of monopole magnets, which helps to reduce magnetic leakage.

[0096] More specifically, two first reflective magnetic elements 1271 protrude from the bottom surface of the carrier 125, and two second reflective magnetic elements 1272 protrude from the top surface of the reflective base 121, thereby reducing the distance between the two first reflective magnetic elements 1271 and the two second reflective magnetic elements 1272, and thus increasing the magnetic attraction between the first reflective magnetic elements 1271 and the two second reflective magnetic elements 1272. Furthermore, the frame 123 is recessed inwards at the positions facing the two first reflective magnetic elements 1271 and the two second reflective magnetic elements 1272 to provide clearance space. It should be understood that the positions of the frame 123 facing the two first reflective magnetic elements 1271 and the two second reflective magnetic elements 1272 can also directly form two through slots to provide clearance space. For example... Figure 10 As shown, the frame 123 forms two through slots directly facing the positions of the two first reflective magnetic elements 1271 and the two second reflective magnetic elements 1272. The two first reflective magnetic elements 1271 pass directly through the two through slots respectively, so that the distance between the first magnetic elements and the second magnetic elements is not limited by the setting of the frame 123.

[0097] In one example, the bottom surface of the carrier 125 is recessed inward to form two carrier magnetic grooves 1256. Two first reflective magnetic elements 1271 are fixed to the bottom surface of the carrier 125 by being respectively installed in the two carrier magnetic grooves 1256. Two second reflective magnetic elements 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 elements 1271 and the second reflective magnetic elements 1272 while generating sufficient magnetic attraction, the area of ​​the second reflective magnetic elements 1272 can be increased. Accordingly, in a specific example, the projection of the first reflective magnetic element 1271 in the direction of the first axis Y falls in the second reflective magnetic element 1272, that is, the area of ​​the projection of the first reflective magnetic element 1271 in the direction of the first axis Y is smaller than the area of ​​the projection of the second reflective magnetic element 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 components 1272, a magnetic connection part 1273 can also be provided between the two second reflective magnetic components 1272. The magnetic connection part 1273 has an opening in the middle to avoid the rotating shaft support 1221. The magnetic connection part 1273 protrudes downward so that it can be fixed in the reflective base 121 by insert injection molding.

[0098] Here, to facilitate the installation of the first reflective magnetic element 1271, two first reflective magnetic elements 1271 are also magnetically attracted by reflective magnetic sheets 1265 embedded in the carrier 125. In one example, the reflective magnetic sheets 1265 protrude from the two carrier magnetic slots 1256, and the two reflective magnetic elements are respectively disposed in the two carrier magnetic slots 1256 and attract the reflective magnetic sheets 1265.

[0099] Furthermore, Figure 11A schematic diagram of the reflective base 121 viewed from above along the first axis Y is shown, in which two rotating ball bearings 1241 and two first reflective magnetic elements 1271 are projected onto the reflective substrate 1211 of the reflective base 121 along the first axis Y. It should be understood that when the reflective magnetic attraction part 127 magnetically attracts the carrier 125 across the frame 123 to the reflective base 121, the reflective magnetic attraction part 127 also applies magnetic attraction to the first support part 122 and the second support part 124. However, if the magnetic attraction force of the reflective magnetic attraction part 127 does not directly act on the third axis Z of the two rotating ball bearings 1241 passing through the second support part 124, the magnetic attraction force will affect the rotation of the carrier 125 relative to the frame 123 about the third axis Z. Specifically, when the magnetic attraction force of the reflective magnetic attraction part 127 does not intersect with the third axis Z, the magnetic attraction force of the reflective magnetic attraction part 127 does not act directly on the third axis Z, resulting in a large restoring resistance. This hinders the rotation of the carrier 125 around the third axis Z, thus requiring an increase in the thrust of the reflective drive assembly 12, and causing the rotation of the carrier 125 relative to the frame 123 around the third axis Z to be biased in one direction. In other words, to ensure the normal and stable operation of the carrier 125 relative to the frame 123, it is necessary to control the positional relationship between the magnetic attraction force direction of the reflective magnetic attraction part 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 magnetic attraction force direction of the reflective magnetic attraction part 127 refers to the direction of the resultant force of all magnetic attraction forces in the reflective magnetic attraction part 127. For example, when two magnetic attraction forces are generated between the two first reflective magnetic elements 1271 and the two second reflective magnetic elements 1272 of the reflective magnetic attraction section 127, the direction of the resultant force of the two magnetic attraction forces is the direction of the magnetic attraction force of the reflective magnetic attraction section 127. Alternatively, when the reflective magnetic attraction section 127 generates only one magnetic attraction force, the direction of that magnetic attraction force is the direction of the magnetic attraction force of the reflective magnetic attraction section 127.

[0100] However, when the magnetic attraction force of the reflective magnetic attraction part 127 acts directly on the rotating shaft support member 1221 of the first support part 122, it will increase the wear on the rotating shaft support member 1221, thereby damaging and affecting the accuracy of the frame 123 rotating relative to the reflective base 121.

[0101] To address the aforementioned issues, in one example, the first axis Y around which the frame 123 rotates relative to the reflective base 121 does not intersect with the third axis Z around which the carrier 125 rotates relative to the frame 123, 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 is not located on the third axis Z; the third axis Z is located between the rotating shaft support 1221 and at least two auxiliary balls 1222. In a specific example, the distance from the rotating 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. Further, viewed along the direction of the first axis Y, the magnetic attraction direction of the reflective magnetic attraction part 127 intersects with the third axis Z, and the magnetic attraction force of the reflective magnetic attraction part 127 acts directly on the third axis Z. The reflective magnetic attraction part 127 is symmetrically arranged about the third axis Z. In a specific example, viewed along the direction of the first axis Y, the two first reflective magnetic elements 1271 are symmetrically arranged about the third axis Z.

[0102] It is worth mentioning that, since the rotating magnets that drive the carrier 125 to rotate around the first axis Y are all located on the back 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 provided by the reflection drive unit 126 for driving the carrier 125 to rotate around the first axis Y. Therefore, in one example of this 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 around the first axis Y has a sufficiently large torque, thereby enabling the carrier 125, the frame 123, and other components fixed to both to rotate. Furthermore, considering the limitations imposed by mobile electronic devices on the operating current of the rotating coil, a higher operating current results in higher power consumption for the reflective drive assembly 12. Therefore, it is advisable to increase the vertical distance L4 between the first axis Y and the center of the first rotating magnet 1261, thereby reducing 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 100mA. 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 3.5mm.

[0103] However, when the distance between the first axis Y and the third axis Z is too large, the utilization rate of the reflective surface of the reflective element 11 fixed to the carrier 125 will be insufficient, which is detrimental to the overall design of the reflective module 10. Therefore, considering the spacing design between the third axis Z and the first axis Y, and combined 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 2mm-5.5mm, more preferably 3.5mm-5.5mm, including both extreme values. Furthermore, the first axis Y is located on the side of the third axis Z away from the reflective drive unit 126, so that under approximate conditions, the driving force provided by the reflective drive unit 126 for rotating around the first axis Y can have a larger torque, thereby reducing the operating current requirement of the first rotating coil 1262, and thus reducing the power consumption of the reflective module 10.

[0104] It is worth mentioning that during the use of the camera module, it is necessary to consider that the weight of the movable part, consisting of the carrier 125 and the components fixed to the carrier 125, will hinder the carrier 125 from being supported on the reflective base 121 by the magnetic attraction of the reflective magnetic part 127 through the frame 123 during the posture change of the reflective module 10. In severe cases, this problem may cause the carrier 125 to fall off. To reduce the possibility of this happening, the height of the center of gravity of the movable part can be lowered, so that the center of gravity of the movable part is closer to the reflective base 1211, thereby reducing the torque generated by the weight of the movable part. Accordingly, as Figure 3B , Figure 5 and Figure 6 As shown, in one example of this application, the height of the top surface of the first rotating magnet 1261 is lower than the height of the top surface of the second rotating magnet 1263, thereby lowering the height of the center of gravity of the movable part. Further, in a specific example, the dimension of the first rotating magnet 1261 in the first axis Y direction is also smaller than the dimension of the second rotating magnet 1263 in the first axis Y direction.

[0105] Furthermore, combined Figure 1As shown in one example of this 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, and are spatially perpendicular to each other; the second axis X and the third axis Z do not intersect, 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 point 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 this arrangement reduces the design difficulty of the reflection driving component 12, and the rotation axis design of the reflection driving component 12 is not limited to the optical axis position of the lens module 20. Of course, in another example of this application, the intersection of the first axis Y and the second axis X can also be located on the light reflecting surface 18 of the reflective element 11.

[0106] It should be understood that in another example of this application, the first axis Y and the second axis X may also be non-intersecting, such 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 are non-intersecting, and the first axis Y, the second axis X and the third axis Z are spatially perpendicular to each other. No two axes among the first axis Y, the second axis X and the third axis Z extend in the same plane.

[0107] Furthermore, such as Figure 2 As shown, the reflection driving assembly 12 also includes a reflection cover 129, which is fixed to the reflection base 121 and forms a receiving space to accommodate other components of the reflection driving assembly 12. Specifically, the reflection cover 129 includes a reflection cover top 1291 and a first reflection cover side 1292, a second reflection cover side 1293, and a third reflection cover side 1294 fixed to the reflection cover top 1291. The reflection cover top 1291 has an entrance window 12911. The first reflection cover side 1292 and the third reflection cover side 1294 are disposed opposite to each other on both sides of the reflection cover top 1291. The second reflection cover side 1293 connects the first reflection cover side 1292 and the third reflection cover side 1294 and is located on the side away from the lens module 20. In this way, light can enter the reflection module 10 through the incident window 12911 on the top of the reflective cover 1291, and exit the reflection module 10 from the side of the reflective cover 129 where the reflective cover 129 is not provided.

[0108] In summary, the camera module and reflection driving assembly 12 based on the embodiments of this application are explained. The reflection driving 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 driving assembly 12 described in this application can drive the reflection element 11 to rotate around a first axis Y ± 2.2°, and can drive the reflection element 11 to rotate around a third axis Z ± 1.2°. The symbol ± indicates that the reflection element 11 can rotate clockwise or counterclockwise in two opposite directions around the rotation axis (first axis Y or third axis Z) based on its initial position.

[0109] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A reflection driving component, characterized in that, include: Reflector base; A carrier, which is rotatably disposed on the reflective base, is used to fix a reflective element that reflects light propagating along a first axis toward a second axis intersecting the first axis. as well as A reflective drive unit, the reflective drive unit including at least one first rotating magnet and at least one first rotating coil for driving the carrier to rotate about the first axis, and at least one second rotating magnet and at least one second rotating coil for driving the carrier to rotate about the third axis, the direction vector of the first axis and the direction vector of the third axis are perpendicular to each other, and the first axis and the third axis do not intersect each other; At least two rotating magnet-rotating coil pairs for driving the carrier to rotate about the first axis and the third axis are disposed on the same side of the carrier, the first axis being located on the side of the third axis away from the reflective drive unit.

2. The reflection driving component according to claim 1, 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. The vertical distance between the first axis and the center of the first rotating magnet is 2mm-5.5mm.

3. The reflection driving component according to claim 1, characterized in that, The reflective drive assembly further includes a reflective magnetic attraction part. The carrier is supported on the reflective base by the magnetic attraction force of the reflective magnetic attraction part through the frame. When viewed along the first axis, the direction of the magnetic attraction force of the reflective magnetic attraction part intersects with the third axis.

4. The reflection driving component according to claim 3, characterized in that, The reflective magnetic attraction part includes two first reflective magnetic elements and two second reflective magnetic elements. The two first reflective magnetic elements are respectively fixed to the bottom surface of the carrier, and the two second reflective magnetic elements are respectively fixed to the top of the reflective base of the reflective base. When viewed along the first axis, the two first reflective magnetic elements are symmetrically arranged about the third axis.

5. The reflection driving component according to claim 1, characterized in that, 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.

6. The reflection driving component according to claim 5, characterized in that, The first rotating magnet and the first rotating coil are arranged opposite each other along the second axis, which is perpendicular to the first axis and the third axis. The surface of the first rotating magnet facing the first rotating coil has at least two magnetic pole regions arranged along the direction of the third axis. The second rotating magnet and the second rotating coil are also arranged opposite each other along the second axis. The surface of the second rotating magnet facing the second rotating coil has at least two magnetic pole regions arranged along the direction of the first axis.

7. The reflection driving component according to any one of claims 1 to 6, characterized in that, The reflection driving 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.

8. The reflection driving assembly according to claim 7, characterized in that, The first support includes a pivot support member, which is passed through by the first shaft and fixed to one of the reflective base and the frame. The other of the reflective base and the frame is provided with a pivot positioning groove. The frame is restricted to rotate relative to the reflective base about the first shaft by the limiting relationship between the pivot positioning groove and the pivot support member.

9. The reflection driving assembly according to claim 8, characterized in that, The first support portion further includes at least two auxiliary balls for assisting the pivot support member in supporting the frame. The at least two auxiliary balls are disposed between at least two auxiliary upper grooves of the frame and at least two auxiliary lower grooves of the reflective 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 centered on the first axis.

10. The reflection driving assembly according to claim 7, characterized in that, The second support includes two pivot balls. The frame forms a first lower pivot groove and a second lower pivot groove. The carrier forms a first upper pivot groove and a second upper pivot groove. The pivot balls are housed between the upper pivot groove and the lower pivot groove and are passed through by the third shaft, so that the carrier can rotate relative to the frame around the third shaft.

11. The reflection driving assembly according to claim 7, characterized in that, The reflection drive assembly further includes a first rotation sensing element and a second rotation sensing element for acquiring attitude 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.

12. A camera module, characterized in that, include: A reflection module, the reflection module comprising a reflection driving component as described in any one of claims 1 to 11 and a reflection element mounted in the reflection driving component; A lens module, wherein the lens module is positioned on the light reflection path of the reflective module; as well as An imaging module receives light emitted from the lens module and performs imaging.

Images