CN116661216A

CN116661216A - Reflection driving mechanism and camera module

Info

Publication number: CN116661216A
Application number: CN202210153530.4A
Authority: CN
Inventors: 请求不公布姓名; 阙嘉耀; 赵波杰; 姚立锋
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2023-08-29

Abstract

Disclosed are a reflection driving mechanism and a camera module, wherein the reflection driving mechanism drives a reflection element of the camera module to rotate through compact structural arrangement so as to realize optical anti-shake of the camera module. And the reflection anti-shake mechanism has a relatively small size, which is beneficial to miniaturization of the camera module.

Description

Reflection driving mechanism and camera module

Technical Field

The application relates to the field of camera modules, in particular to a reflection driving mechanism and a camera module.

Background

With the popularization of mobile electronic devices, related technologies of camera modules for helping users acquire images applied to the mobile electronic devices have been rapidly developed and advanced, the camera modules have been generally installed in mobile electronic devices such as tablet computers, notebook computers, and smartphones, and an Auto Focus (AF) function, an optical anti-shake (OIS) function, a zoom function, etc. have been added to the camera modules for mobile terminals to satisfy the demands of consumers for more and more diversification of functions of the camera modules.

However, in order to realize various functions, the structure of the camera module has become complicated and the size has also increased, resulting in an increase in the size of the mobile electronic device in which the camera module is mounted. In addition, when one of the components in the camera module needs to be driven to move, the weight of the component itself and the weight of other components fixed with the component should also be considered, and driving a heavier object requires greater driving force and higher power consumption.

Therefore, an optimized anti-shake scheme and a corresponding camera module structure are desired.

Disclosure of Invention

An advantage of the present application is to provide a reflective driving mechanism and an image capturing module, wherein the reflective driving mechanism drives a reflective element of the image capturing module to rotate through a compact structural arrangement so as to realize optical anti-shake of the image capturing module. In particular, the reflection anti-shake mechanism has a relatively small size, which is beneficial to miniaturization of the camera module.

Other advantages and features of the application will become apparent from the following description, and may be realized by means of the instrumentalities and combinations particularly pointed out in the claims.

To achieve at least one of the above advantages, the present application provides a reflective driving mechanism, comprising:

the reflection driving shell is provided with a containing cavity formed in the reflection driving shell and a light inlet and a light outlet which are communicated with the containing cavity;

a support frame rotatably mounted in the receiving cavity;

a bearing seat rotatably mounted on the support frame; and

the driving unit comprises a first driving magnet and a second driving magnet which are arranged on the bearing seat, and a first driving coil and a second driving coil which are arranged on the reflection driving shell and respectively correspond to the first driving magnet and the second driving magnet, wherein the first driving magnet and the first driving coil form a first coil-magnet pair, and the second driving magnet and the second driving coil form a second coil-magnet pair.

In the reflection driving mechanism according to the present application, the first coil-magnet pair and the second coil-magnet pair are symmetrically arranged with respect to a central axis set by the bearing seat.

In the reflection driving mechanism according to the present application, the first coil-magnet pair and the second coil-magnet pair are adapted to cooperate to drive the bearing seat to rotate about a first axis relative to the support frame, and the first coil-magnet pair and the second coil-magnet pair are adapted to cooperate to drive the bearing seat to rotate about a second axis perpendicular to the first axis relative to the reflection driving housing to drive the support frame to rotate about the second axis relative to the reflection driving housing through a pivotal connection between the bearing seat and the support frame.

In the reflection driving mechanism according to the present application, a resultant force of a first force acting on the carrier generated by the first coil-magnet pair and a second force acting on the carrier generated by the second coil-magnet pair determines a movement of the carrier relative to the support frame, and a difference between a first moment acting on the carrier generated by the first coil-magnet pair and a second moment acting on the carrier generated by the second coil-magnet pair determines a movement of the carrier and the support frame as a whole relative to the reflection driving housing.

In the reflection driving mechanism according to the present application, the reflection driving housing includes an upper cover and a base which are fastened to each other, the base has a base through hole penetratingly formed at a bottom thereof, the driving unit further includes a reflection part wiring board fixed in the base through hole, and the first driving coil and the second driving coil are electrically connected to the reflection part wiring board.

In the reflection driving mechanism according to the present application, the driving unit includes a third driving magnet provided to the carrier and located between the first driving magnet and the second driving magnet, and a third driving coil provided to the reflection driving housing and corresponding to the third driving magnet, the third driving coil being located between the first driving coil and the second driving coil, wherein the third driving coil and the third driving magnet constitute the third coil-magnet pair.

In the reflection driving mechanism according to the present application, the first coil magnet pair and the second coil magnet pair are symmetrically distributed with respect to the third coil-magnet pair.

In the reflective driving mechanism according to the present application, the third coil-magnet pair is adapted to drive the bearing seat to rotate about a first axis relative to the support frame, and the first coil-magnet pair and the second coil-magnet pair are adapted to cooperate to drive the bearing seat to rotate about a second axis perpendicular to the first axis relative to the reflective driving housing to rotate about the second axis relative to the reflective driving housing through a pivotal connection between the bearing seat and the support frame.

In the reflection driving mechanism according to the present application, a difference between a first moment acting on the carrier generated by the first coil-magnet pair and a second moment acting on the carrier generated by the second coil-magnet pair determines a movement condition of the carrier and the support frame as a whole with respect to the reflection driving housing, wherein a direction of a first acting force acting on the carrier generated by the first coil-magnet pair is opposite to a direction of a second acting force acting on the carrier generated by the second coil-magnet pair.

In the reflection driving mechanism according to the present application, the magnitude of the first force is equal to the magnitude of the second force.

In the reflection driving mechanism according to the present application, the first driving coil and the second driving coil are connected in series with each other, a winding direction of the first driving coil is opposite to a winding direction of the second driving coil, and magnetic poles of the first driving magnet and the second driving magnet face the same direction.

In the reflection driving mechanism according to the present application, the first driving coil and the second driving coil are connected in series with each other, a winding direction of the first driving coil is the same as a winding direction of the second driving coil, and magnetic poles of the first driving magnet and the second driving magnet are opposite in orientation.

In the reflection driving mechanism according to the present application, the reflection driving mechanism further includes a rotation support assembly by which the support frame is rotatably mounted in the receiving chamber, the support frame having at least one support groove concavely formed at a top surface thereof, the bearing seat includes a bearing body having a mounting portion adapted to mount the reflection element thereon and at least one rotation shaft protruding and laterally extending from the bearing body, the at least one rotation shaft is fittingly mounted in the at least one support groove so that the bearing seat is rotatable with respect to the support frame by a pivotal connection of the at least one rotation shaft and the at least one support groove.

In the reflection driving mechanism according to the present application, the at least one rotation shaft includes a first rotation shaft and a second rotation shaft extending outwardly from opposite sides of the bearing body, respectively, the first rotation shaft and the second rotation shaft being coaxially disposed, the at least one support groove includes a first support groove and a second support groove concavely formed at a top surface of the support frame, the first support groove and the second support groove being coaxially disposed, wherein the first rotation shaft is fittingly mounted in the first support groove, and the second rotation shaft is fittingly mounted in the second support groove, wherein the first rotation shaft and the second rotation shaft are located at a top of the bearing body.

In the reflection driving mechanism according to the present application, the support frame includes a first support portion, a second support portion, and a frame connection portion extending between the first support portion and the second support portion, wherein the first support groove is concavely formed at a top surface of the first support portion, and the second support groove is concavely formed at a top surface of the second support portion.

In the reflection driving mechanism according to the present application, the reflection driving mechanism further includes a first rotation limiting portion for limiting a rotation angle of the bearing seat with respect to the support frame, and a second rotation limiting portion for limiting a rotation angle of the support frame with respect to the reflection driving housing.

In the reflection driving mechanism according to the present application, the reflection driving mechanism further includes a reflection portion magnetic attraction member for attracting the carrier and the support frame to the reflection driving housing, wherein the reflection portion magnetic attraction member includes a frame magnetic attraction magnet fixed to the support frame and a reflection portion magnetic conductive sheet provided to the reflection driving housing so that the carrier is attracted to the reflection driving housing by a magnetic attraction force between the frame magnetic attraction magnet and the reflection portion magnetic conductive sheet and a magnetic attraction force between the first and second driving magnets and the reflection portion magnetic conductive sheet, and the carrier is attracted to the reflection driving housing by a magnetic attraction force between the first and second driving magnets and the reflection portion magnetic conductive sheet.

In the reflection driving mechanism according to the present application, the reflection driving mechanism further includes a reed including an outer fixing portion fixed to a top surface of the support frame, an inner fixing portion fixed to a top surface of the carrier, and a wire portion extending between the inner fixing portion and the outer fixing portion, wherein the carrier is centrally held within the support frame by the reed.

According to another aspect of the present application, there is also provided an image capturing module including:

a reflective drive mechanism as described above;

a reflective element mounted to the reflective drive mechanism;

a lens module held on a light reflection path of the reflection element; and

a photosensitive member disposed on a light propagation path of the lens module.

Further objects and advantages of the present application will become fully apparent from the following description and the accompanying drawings.

These and other objects, features and advantages of the present application will become more fully apparent from the following detailed description, the accompanying drawings and the appended claims.

Drawings

The above and other objects, features and advantages of the present application will become more apparent by describing embodiments of the present application in more detail with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate the application and together with the embodiments of the application, and not constitute a limitation to the application. In the drawings, like reference numerals generally refer to like parts or steps.

Fig. 1A illustrates a schematic diagram of an image capturing module according to an embodiment of the present application.

Fig. 1B illustrates a schematic diagram of another embodiment of an imaging module according to an embodiment of the present application.

Fig. 1C illustrates a schematic diagram of another embodiment of an imaging module according to an embodiment of the present application.

Fig. 2 illustrates a perspective view of a reflection module according to an embodiment of the present application.

Fig. 3A illustrates a top perspective exploded view of a reflective drive mechanism according to an embodiment of the present application.

Fig. 3B illustrates a bottom perspective exploded view of the reflective drive mechanism according to an embodiment of the present application.

Fig. 4A illustrates a top perspective view of a carrier according to an embodiment of the present application.

Fig. 4B illustrates a bottom perspective view of the carrier according to an embodiment of the present application.

Fig. 5A illustrates a top perspective view of a support frame according to an embodiment of the present application.

Fig. 5B illustrates a bottom perspective view of the support frame according to an embodiment of the present application.

Fig. 6A illustrates a perspective view of the reflective drive mechanism with the upper cover removed, in accordance with an embodiment of the present application.

Fig. 6B illustrates a schematic cross-sectional view of the reflective drive mechanism with the upper cover removed, in accordance with an embodiment of the present application.

Fig. 7 illustrates a schematic top view of a base according to an embodiment of the present application.

Fig. 8 illustrates driving force diagrams of two coil-magnet pairs according to an embodiment of the present application.

Fig. 9 illustrates a cross-sectional view of another reflective drive mechanism with the upper cover removed, in accordance with an embodiment of the present application.

Fig. 10 illustrates driving force diagrams of three coil-magnet pairs according to an embodiment of the present application.

FIG. 11A illustrates a schematic diagram of three coil-magnet pairs according to an embodiment of the present application.

FIG. 11B illustrates another schematic diagram of three coil-magnet pairs according to an embodiment of the present application.

Detailed Description

Hereinafter, exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. It should be apparent that the described embodiments are only some embodiments of the present application and not all embodiments of the present application, and it should be understood that the present application is not limited by the example embodiments described herein.

Schematic camera module

As shown in fig. 1A to 1C, an image capturing module according to an embodiment of the present application is illustrated, which includes a reflection module 10, a lens module 20, and a photosensitive assembly 30, wherein the reflection module 10 is configured to change a propagation direction of an imaging light from a subject such that the imaging light is directed to the lens module 20, the lens module 20 is configured to collect the imaging light at the photosensitive assembly 30, and the photosensitive assembly 30 is configured to output a formed image. That is, in the embodiment of the present application, the reflecting module 10 functions to redirect the imaging light from the object, wherein the lens module 20 is held on the reflecting path of the reflecting module 10 for receiving the imaging light from the reflecting module 10, and the photosensitive member 30 is held on the light propagation path of the lens module 20 for receiving the imaging light from the lens module 20.

Accordingly, the reflection module 10 includes a reflection driving mechanism 12 and a reflection element 11 mounted on the reflection driving mechanism 12, wherein the reflection element 11 is adapted to reflect light to fold an imaging light path of the camera module 1, so as to reduce the overall height dimension of the camera module 1, and enable the camera module 1 to be laterally placed in a mobile electronic device. In a specific example, the reflecting element 11 is adapted to turn the incident imaging light by 90 ° and then to enter the lens module 20. It should be noted that, in consideration of manufacturing tolerances, the angle at which the reflecting element 11 turns the imaging light may have an error within 1 °, as will be understood by those skilled in the art.

In a specific embodiment, the reflecting element 11 may be embodied as a mirror or a prism (e.g. a triple prism). The reflection driving mechanism 12 is adapted to drive the reflection element 11 to move, so as to change the propagation path of the imaging light, thereby realizing the anti-shake function of the camera module 1. In one embodiment of the present application, the reflection driving mechanism 12 is adapted to drive the reflection element 11 to rotate about a first axis 122X (X axis) perpendicular to the optical axis (Z axis) and about a second axis 123Y (Y axis) perpendicular to both the optical axis (Z axis) and the first axis 122X (X axis), with the optical axis direction of the lens module 20 as the Z axis direction.

Accordingly, when the reflecting element 11 is implemented as a prism 111, the prism 111 includes a light incident surface 1111, a light reflecting surface 1112, and a light emitting surface 1113, the light incident surface 1111 of the prism 111 is perpendicular to the light emitting surface 1113 thereof, and the light reflecting surface 1112 of the prism 111 is inclined at an angle of 45 ° to the light incident surface 1111 and the light emitting surface 1113, so that imaging light can be turned by 90 ° at the light reflecting surface 1112 and output from the light emitting surface 1113 perpendicularly to the light emitting surface 1113.

The lens module 20 includes an optical lens 22, wherein an optical axis of the optical lens 22 is an optical axis of the lens module 20, and the optical axis of the optical lens 22 is disposed along the Z-axis direction. The light reflected by the reflection module 10 is incident on the optical lens 22 and is converged to the photosensitive assembly 30 via the optical lens 22.

In one embodiment of the present application, the optical lens 22 has a fixed focal length, and as shown in fig. 1A, the optical lens 22 includes a lens barrel 221 and a lens group 222 accommodated in the lens barrel 221, the lens group 222 includes at least one optical lens, and the optical lens 22 is movable relative to the photosensitive assembly 30 in a direction along an optical axis of the optical lens 22 or in a direction perpendicular to the optical axis of the optical lens 22.

In other embodiments of the present application, the optical lens 22 has a variable focal length (i.e., the focal length of the lens module 20 is variable), and as shown in fig. 1B and 1C, the optical lens 22 includes at least one fixed group 223 and at least one movable group 224, the at least one fixed group 223 being fixed with respect to the photosensitive member 30 at a distance along the optical axis direction of the optical lens 22, and the at least one movable group 224 being adjustable with respect to the at least one fixed group 223 or the photosensitive member 30 at a distance along the optical axis direction of the optical lens 22. Specifically, referring to fig. 1B, the optical lens 22 includes a fixed group 223 and a movable group 224, the fixed group 223 includes a first lens barrel 2231 and a first lens group 2232 accommodated in the first lens barrel 2231, the first lens group 2232 includes at least one optical lens, the movable group 224 includes a second lens barrel 2241 and a second lens group 2242 accommodated in the second lens barrel 2241, and the second lens group 2242 includes at least one optical lens. In the optical axis direction of the optical lens 22, the position of the fixed group 223 relative to the photosensitive assembly 30 is fixed, and the position of the movable group 224 relative to the fixed group 223 is adjustable, so that the focal length of the optical lens 22 is adjustable. Further, referring to fig. 1C, the movable group 224 further includes a third lens barrel 2243 and a third lens group 2244 accommodated in the third lens barrel 2243, the third lens group 2244 includes at least one optical lens, in other words, in the embodiment shown in fig. 1C, the optical lens 22 includes a fixed group 223 and two movable groups 224, and positions of the two movable groups 224 relative to the fixed group 223 in the optical axis direction of the optical lens 22 can be adjusted respectively. Two of the active groups 224 include a zoom group and a focus group, in one specific example, the zoom group is disposed between the fixed group 223 and the focus group; in another specific example, the focusing group is disposed between the fixed group 223 and the zooming group, and the present application is not limited thereto. In the present application, the fixed group 223 and the movable group 224 of the optical lens 22 may be other numbers, and may be set according to the imaging requirements of the imaging module 1.

The lens module 20 may further include a lens driving mechanism, wherein the optical lens 22 is installed in the lens driving mechanism 21, and the lens driving mechanism 21 is adapted to drive the optical lens 22 to move, change a propagation path of imaging light, and further implement functions such as anti-shake, focusing, and zooming. Referring to fig. 1A, the lens driving mechanism 21 is adapted to drive the optical lens 22 to move in the optical axis direction thereof to achieve a focusing function, or to drive the optical lens 22 to move perpendicular to the optical axis direction thereof to achieve an anti-shake function; referring to fig. 1B, the lens driving mechanism 21 is adapted to drive the movable group 224 to move along the optical axis direction of the optical lens 22 to adjust the focal length of the optical lens 22; referring to fig. 1C, the lens driving mechanism 21 is adapted to drive the two movable groups 224 (a zoom group and a focus group) to move along the optical axis direction of the optical lens 22, respectively, to realize an optical zoom function.

In the embodiment of the present application, the photosensitive assembly 30 includes a photosensitive circuit board 31, and a photosensitive chip 32, an electronic component (not shown), a filter element holder 34, and a filter element 33 mounted on the photosensitive circuit board 31. In some examples of the present application, the photosensitive chip 32 is fixed to the photosensitive circuit board 31 by, for example, bonding, and is electrically connected to the photosensitive circuit board 31, so that the photosensitive chip 32 receives the imaging light to form an image, and is electrically connected to the mobile electronic device through the photosensitive circuit board 31. In some examples of the present application, the filter element holder 34 is fixed to the photosensitive circuit board 31 by, for example, bonding, and the filter element 33 is fixed to the filter element holder 34 by, for example, bonding so as to be held on the photosensitive path of the photosensitive chip 32, and the filter element 33 filters the imaging light entering the photosensitive chip 32.

In some examples of the present application, the photosensitive assembly 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, so as to form the periscopic camera module 1 with anti-shake function. Specifically, the photosensitive assembly 30 is fixed to the lens driving housing 211 of the lens module 20 by, for example, bonding, the optical filter element holder 34, the reflection module 10 is fixed to the lens driving housing 211 of the lens module 20 by, for example, the reflection driving housing 121 of the reflection module 10 and the lens driving housing 211 are fixed to each other by an adhesive medium (for example, the reflection driving housing 121 of the reflection module 10 and the lens driving housing 211 are fixed to each other by an adhesive medium, or the reflection driving housing 121 and the lens driving housing 211 are fixed to each other by an integral molding), in other words, the reflection module 10 and the lens driving module 20 adopt the same housing, and the reflection element 11 and the optical lens 22 are mounted in the same housing to form the integral periscope type camera module 1.

As described above, in order to realize the anti-shake of the image capturing module 1 by the movement of the reflecting element 11, it is necessary for the reflection driving mechanism 12 to drive the reflecting element 11 to change the propagation path of the imaging light. To this end, the present application provides a reflection driving mechanism 12 adapted to drive the reflection element 11 to rotate, so that the size of the reflection driving mechanism 12 is relatively small while achieving an anti-shake function, and miniaturization of the image pickup module 1 can be maintained.

Illustrative reflective drive mechanism 12

As shown in fig. 2 to 11B, the reflection driving mechanism 12 according to the embodiment of the present application is illustrated. In the present application, the reflective driving mechanism 12 includes a reflective driving housing 121, a bearing base 122, a supporting frame 123, a reed 124, a driving unit 125, a reflective magnetic member 127, and a rotary supporting assembly 128.

For convenience of explanation, in the present application, as described above, the imaging light is reflected by the reflection module 10, and then emitted and propagates to the optical lens 22, and the emission direction of the reflection module 10 coincides with the optical axis direction of the optical lens 22, and is the Z-axis direction, wherein the incident direction of the imaging light into the reflection module 10 is the Y-axis direction (the second axis 123Y direction), and the direction perpendicular to the emission direction and the incident direction of the imaging light is the X-axis direction (the first axis 122X direction).

Referring to fig. 2 to 3B, in the embodiment of the present application, the reflective driving housing 121 has a receiving cavity, and a light inlet 1213 and a light outlet 1214 that are connected to the receiving cavity, wherein the imaging light from the object enters the reflective driving housing 121 from the light inlet 1213, reflects on the reflective element 11, and exits the reflective driving housing 121 from the light outlet 1214.

In a specific example of the present application, as shown in fig. 2 to 3B, the reflective driving housing 121 includes an upper cover 1211 and a base 1212, and the upper cover 1211 is fixed to the base 1212 and forms an installation space of the reflective driving housing 121 to install other elements of the reflective driving mechanism 12.

Accordingly, in this specific example, the upper cover 1211 includes an upper cover main body 12111 and first, second, third and fourth upper cover side walls 12112, 12113, 12114 and 12115 integrally extending at a circumferential side of the upper cover main body 12111, the first, second, third and fourth upper cover side walls 12112, 12113, 12114 and 12115 forming a receiving chamber of the upper cover 1211 to receive the base 1212. In the first axis 122X (X axis) direction, the first upper cover side wall 12112 and the second upper cover side wall 12113 are disposed opposite to each other on both sides of the upper cover main body 12111, the third upper cover side wall 12114 connects the first upper cover side wall 12112 and the second upper cover side wall 12113 and is disposed on one side of the upper cover main body 12111, and the fourth upper cover side wall 12115 connects the first upper cover side wall 12112 and the second upper cover side wall 12113 and is disposed on the other side of the upper cover main body 12111 opposite to the third upper cover side wall 12114. The fourth upper cover sidewall 12115 is located at a side of the reflection module 10 from which the imaging light exits, that is, the fourth upper cover sidewall 12115 is located at a side of the upper cover 1211 close to the lens module 20.

The upper cover 1211 includes an upper cover light inlet 121111 formed in the upper cover main body 12111 and an upper cover light outlet 121151 formed in the fourth upper cover side wall 12115, the upper cover light inlet 121111 provides a channel through which the imaging light is incident, and the upper cover light outlet 121151 provides a channel through which the imaging light is emitted. In one embodiment of the present application, the upper cover light inlet 121111 is in communication with the upper cover light outlet 121151 to provide a space for movement of the reflective element 11, thereby reducing the space for avoiding the reflective element 11 provided by the reflective drive housing 121 and reducing the size of the reflective drive mechanism 12. In another embodiment of the present application, the upper cover light inlet 121111 is not connected to the upper cover light outlet 121151, so as to reduce stray light entering the lens module 20.

The base 1212 includes a base 12121 and first, second, third and fourth base side walls 12122, 12123, 12124, 12125 surrounding the base 12121 and fixed to the base 12121 such that the base 1212 has an upward opening and forms an installation space with the upper cover 1211. In the first axis 122X (X axis) direction, the first base side wall 12122 and the second base side wall 12123 are disposed opposite to each other on both sides of the base 12121, the third base side wall 12124 connects the first base side wall 12122 and the second base side wall 12123 and is disposed on one side of the base 12121, and the fourth base side wall 12125 connects the first base side wall 12122 and the second base side wall 12123 and is disposed on the other side of the base 12121 opposite to the third base side wall 12124. The fourth base side wall 12125 is located on the side of the reflection module 10 from which the imaging light exits, that is, the fourth base side wall 12125 is located on the side of the base 1212 near the lens module 20.

The base 1212 includes a base exit 121251 formed in the fourth base side wall 12125, the base exit 121251 providing a path for the imaging light to exit. The upward opening formed by the base 1212 surrounded by the base 12121 and the first base sidewall 12122, the second base sidewall 12123, the third base sidewall 12124, and the fourth base sidewall 12125 and the upper cover light inlet 121111 of the upper cover 1211 together form the light inlet 1213 of the reflective driving housing 121. The base light outlet 121251 of the base 1212 and the upper cover light outlet 121151 of the upper cover 1211 together form the light outlet 1214 of the reflective drive housing 121.

As shown in fig. 2 to 6B, the reflecting element 11 is mounted in the reflection driving mechanism 12 by being fixed to the carrier 122, the carrier 122 is mounted in the supporting frame 123 and is directly or indirectly supported by the supporting frame 123, and the supporting frame 123 is mounted to the reflection driving housing 121 and is directly or indirectly supported by the reflection driving housing 121. More specifically, in the embodiment of the present application, the carrying base 122 is rotatably mounted on the supporting frame 123, and the supporting frame 123 is also rotatably mounted in the reflective driving housing 121, so that after the reflective element 11 is mounted on the carrying base 122, when the carrying base 122 and/or the supporting frame 123 rotate relative to the reflective driving housing 121, the reflective element 11 is also rotated relative to the reflective driving housing 121 to implement optical anti-shake of the camera module 1.

In one embodiment of the present application, referring to fig. 4A to 4B, the carrying base 122 includes a carrying body 1221 having a mounting portion concavely formed on a side of the carrying base 122 adjacent to the reflection module 10 from which the imaging light exits, wherein the reflection element 11 is fixed to the carrying base 122 by being mounted on the mounting portion. In the embodiment of the present application, the carrier 122 is adapted to be driven by the driving unit 125 to rotate about the first axis 122X (X axis) and/or the second axis 123Y (Y axis), so as to rotate the reflective element 11 about the first axis 122X (X axis) and/or the second axis 123Y (Y axis).

Referring to fig. 5A to 5B, the supporting frame 123 includes a first supporting portion 1231, a second supporting portion 1232, and a frame connecting portion 1233 connecting the first supporting portion 1231 and the second supporting portion 1232, where the first supporting portion 1231, the frame connecting portion 1233, and the second supporting portion 1232 are integrally formed by injection molding and form a U-shaped opening, and the U-shaped opening faces the side of the carrying seat 122. The bearing seat 122 is disposed in the U-shaped opening of the support frame 123 and surrounded by the support frame 123, and the bearing seat 122 is adapted to rotate about the first axis 122X (X axis) relative to the support frame 123. In one embodiment of the present application, the frame connection part 1233 includes a connection part main body 12331 and a reinforcement member 12332 connected, both ends of the connection part main body 12331 and the reinforcement member 12332 are connected to the first support part 1231 and the second support part 1232, respectively, and the reinforcement member 12332 enhances the mechanical strength of the support frame 123, preventing the first support part 1231 and the second support part 1232 from being concave.

Referring to fig. 6A to 6B, the bearing seat 122 is rotatably mounted to the supporting frame 123. Specifically, the bearing seat 122 further includes a first rotation shaft 1222 and a second rotation shaft 1223 formed to protrude from both sides of the bearing body 1221 in the direction of the first support part 1231 and the second support part 1232, respectively, the first shaft 122X passes through the rotation axes of the first rotation shaft 1222 and the second rotation shaft 1223, and the bearing seat 122 rotates about the rotation axis formed by the first rotation shaft 1222 and the second rotation shaft 1223. The top surface of the supporting frame 123 is recessed downwards to form a first supporting groove 12311 and a second supporting groove 12321, the first supporting groove 12311 and the second supporting groove 12321 are symmetrically formed on the inner side of the first supporting portion 1231 and the inner side of the second supporting portion 1232, respectively, the first rotating shaft 1222 is supported on the first supporting groove 12311, and the second rotating shaft 1223 is supported on the second supporting groove 12321, so that the bearing seat 122 is supported on the supporting frame 123. At least a portion of the top surface of the support frame 123 is recessed downward to form the first support groove 12311 and the second support groove 12321, so that the assembly of the reflection driving mechanism 12 is simplified, and only the stacking of the components in the height direction (i.e., the Y-axis direction) is required.

In one embodiment of the present application, the bottom surfaces of the first rotation shaft 1222 and the second rotation shaft 1223 contacting the support frame 123 have a curved shape, which may be a portion of a cylindrical curved surface, a portion of a spherical surface, or other types of curved surface shapes. The bottom surface of the first rotation shaft 1222 is in contact with at least two surfaces of the first support groove 12311, the bottom surface of the second rotation shaft 1223 is in contact with at least two surfaces of the second support groove 12321, so that the first rotation shaft 1222 is supported by the first support groove 12311 and rotates in the first support groove 12311, and the second rotation shaft 1223 is supported by the second support groove 12321 and rotates in the second support groove 12321. The first support groove 12311 and the second support groove 12321 may be in the shape of V-shaped groove, rectangular groove, ︺ groove, etc., and the present application is not limited thereto.

The bearing seat 122 rotates around the first shaft 122X by means of the rotation of the first rotation shaft 1222 in the first supporting groove 12311 and the rotation of the second rotation shaft 1223 in the second supporting groove 12321, so that the rotation shafts of the first rotation shaft 1222 and the second rotation shaft 1223 are coaxially arranged, and the axes of the first rotation shaft 1222 and the second rotation shaft 1223 are at the same height, and further, so that the rotation of the bearing seat 122 can drive the reflecting element 11 to have a larger rotation angle when rotating around the first shaft 122X, the first rotation shaft 1222 and the second rotation shaft 1223 are located at the top of the bearing seat 122.

That is, in the embodiment of the present application, the carrying seat 122 is rotatably connected to the supporting frame 123 through a pivot connection structure so that the carrying seat 122 can rotate relative to the supporting frame 123. Here, the pivot connection means that the first object provided with the shaft can be rotated with respect to the second object provided with the groove by the mutual cooperation between the shaft and the groove. It is particularly worth mentioning that the pivot connection structure enables the bearing seat 122 to rotate relative to the supporting frame 123, and that the relative positional relationship between the bearing seat 122 and the supporting frame 123 as sub-portions is not easily changed when the bearing seat 122 and the supporting frame 123 are rotated as a whole.

It should be appreciated that while the carrier 122 is illustrated as including a first rotational axis 1222 and a second rotational axis 1223, it should be appreciated that in embodiments of the present application, the carrier 122 may include only at least one rotational axis, and accordingly, the support frame 123 may be configured with only one of the support slots such that the carrier 122 may rotate relative to the support frame 123 through a pivotal connection between the at least one rotational axis and the at least one support slot.

In order to limit the rotation angle of the bearing seat 122 relative to the supporting frame 123, the reflective driving mechanism 12 further includes a first rotation limiting portion disposed between the bearing seat 122 and the supporting frame 123. Specifically, in some embodiments of the present application, at least a portion of the first supporting portion 1231 protrudes toward the direction of the bearing seat 122 to form a first limiting protrusion 12315, at least a portion of a side of the bearing seat 122 opposite to the first supporting portion 1231 is recessed to form a first limiting groove 1224, and the first limiting protrusion 12315 cooperates with the first limiting groove 1224 to limit a rotation angle of the bearing seat 122 relative to the supporting frame 123 about a first axis 122X (X axis). Meanwhile, at least a portion of the second supporting portion 1232 protrudes toward the direction of the bearing seat 122 to form a second limiting protrusion 12325, at least a portion of a side of the bearing seat 122 opposite to the second supporting portion 1232 is recessed to form a second limiting groove 1225, and the second limiting protrusion 12325 cooperates with the second limiting groove 1225 to limit a rotation angle of the bearing seat 122 relative to the supporting frame 123 about the first axis 122X (X axis).

In one embodiment of the present application, the first limiting protrusion 12315 is located at the bottom of the first supporting portion 1231, the second limiting protrusion 12325 is located at the bottom of the second supporting portion 1232, and the first limiting protrusion 12315 and the second limiting protrusion 12325 are symmetrically disposed on the inner side surface of the supporting frame 123, so that the first rotation limiting portion is relatively far from the first axis 122X, and the rotation angle of the bearing seat 122 relative to the supporting frame 123 about the first axis 122X (X axis) is larger. In some embodiments of the present application, the maximum rotation angle of the bearing seat 122 about the first axis 122X (X axis) with respect to the support frame 123 is 2 °.

Further, in an embodiment of the present application, the support frame 123 is rotatably installed in the reflective driving housing 121. In one embodiment of the present application, the support frame 123 is rotatably mounted within the reflective drive housing 121 by a rotary support assembly 128 such that the support frame 123 is rotatable relative to the reflective drive housing 121. That is, in some embodiments of the present application, the rotation support member 128 is disposed between the support frame 123 and the reflection driving housing 121, so that the support frame 123 is supported to the reflection driving housing 121 by the rotation support member 128 and rotated about the second axis 123Y (Y axis) with respect to the driving housing by the rotation support member 128.

In one embodiment of the present application, the rotation support assembly 128 includes a rotation rail 1281 and at least three balls 1282 disposed in the rotation rail 1281, wherein the at least three balls 1282 are abutted against the rotation rail 1281. The rotation rail 1281 includes an upper rail groove formed at a bottom surface of the support frame 123 and a lower rail groove formed at the reflective driving housing 121, the upper rail groove and the lower rail groove sandwiching at least three balls 1282 therein, the at least three balls 1282 being in contact with the upper rail groove and the lower rail groove. In the present application, the number of the balls 1282 may be three, four, five or more, and when the number of the balls 1282 is three or more, at least three of the balls 1282 provide a supporting plane for supporting the supporting frame 123. When the number of the balls 1282 is equal to three, it is preferable that the three balls 1282 are spaced apart by 120 °.

In one embodiment of the present application, referring to fig. 3A, 3B, 6B and 7, the rotation support assembly 128 includes four balls 1282, the upper rail grooves of the rotation rail 1281 include a first upper rail groove 12312 concavely formed at the bottom surface of the first support 1231, a second upper rail groove 12313, and a third upper rail groove 12322 concavely formed at the bottom surface of the second support 1232, a fourth upper rail groove 12323, and the lower rail grooves of the rotation rail 1281 include a first lower rail groove 121212 concavely formed at the upper surface of the base 12121 of the base 1212, a second lower rail groove 121213, a third lower rail groove 121214, and a fourth lower rail groove 121215. The first upper rail groove 12312 corresponds to the first lower rail groove 121212 and holds one of the balls 1282 therein, the second upper rail groove 12313 corresponds to the second lower rail groove 121213 and holds one of the balls 1282 therein, the third upper rail groove 12322 corresponds to the third lower rail groove 121214 and holds one of the balls 1282 therein, and the fourth upper rail groove 12323 corresponds to the fourth lower rail groove 121215 and holds one of the balls 1282 therein.

As shown in fig. 7, the first lower rail groove 121212, the second lower rail groove 121213, the third lower rail groove 121214 and the fourth lower rail groove 121215 are arc-shaped rail grooves and are distributed on a circular track, the second shaft 123Y (Y-axis) passes through the center of the circular track, and the first upper rail groove 12312, the second upper rail groove 12313, the third upper rail groove 12322 and the fourth upper rail groove 12323 are arc-shaped rail grooves and are distributed on the circular track with the same size.

In order to limit the rotation angle between the reflective driving housing 121 and the supporting frame 123, in some embodiments of the present application, the reflective driving mechanism 12 further includes a second rotation limiter disposed between the supporting frame 123 and the base 1212. In particular, referring to fig. 5A to 7, at least a portion of an outer side surface of the first support part 1231 near one side of the base 1212 is recessed to form a third limit groove 12314, at least a portion of an opposite side of the base 1212 from the first support part 1231 is protruded to form a third limit protrusion 121221, and the third limit groove 12314 and the third limit protrusion 121221 cooperate to limit a rotation angle of the support frame 123 about the second axis 123Y (Y axis). Meanwhile, at least a portion of the outer side surface of the second supporting portion 1232 near the side of the base 1212 is recessed to form a fourth limiting groove 12324, at least a portion of the side of the base 1212 opposite to the second supporting portion 1232 is protruded to form a fourth limiting protrusion 121231, and the fourth limiting groove 12324 and the fourth limiting protrusion 121231 cooperate to limit the rotation angle of the supporting frame 123 about the second axis 123Y (Y axis). In other words, the third limiting groove 12314 is formed at the outer side surface of the first supporting part 1231, the fourth limiting groove 12324 is formed at the outer side surface of the second supporting part 1232, the third limiting protrusion 121221 is formed at the inner side of the first base sidewall 12122, and the fourth limiting protrusion 121231 is formed at the inner side of the second base sidewall 12123, so that the second rotation limiting part is relatively far from the second shaft 123Y, so that the rotation angle of the supporting frame 123 relative to the base 1212 about the second shaft 123Y (Y-axis) is larger. In one embodiment of the application, the maximum rotation angle of the support frame 123 relative to the base 1212 about the second axis 123Y (Y axis) is 4 °.

In the present application, the driving unit 125 is disposed between the bearing block 122 and the base 1212, thereby driving the bearing block 122 to move, and rotating the bearing block 122 about a first axis 122X (X axis) with respect to the supporting frame 123 through the first rotating shaft 1222, the second rotating shaft 1223, the first supporting groove 12311, and the second supporting groove 12321; the contact between the bearing seat 122 and the supporting frame 123 is used to drive the supporting frame 123 to move, and the supporting frame 123 rotates around the second axis 123Y (Y axis) relative to the base 1212 through the rotary supporting assembly 128.

It should be noted that in the embodiment of the present application, the bearing seat 122 and the supporting frame 123 are pivotally connected to enable the bearing seat 122 to rotate relative to the supporting frame 123, and the supporting frame 123 and the reflective driving housing 121 are rotatably connected to enable the supporting frame 123 to rotate relative to the reflective driving housing 121 by rotating the supporting assembly 128. Here, it is particularly emphasized that it is preferable for the rotatable connection to be achieved by two different rotary support mechanisms, although it is also possible for the rotatable mounting between the carrying seat 122 and the support frame 123 to be achieved by means of a rotary support assembly 128, or alternatively for the rotatable mounting between the support frame 123 and the reflective drive housing 121 to be achieved by means of a pivot connection, it is preferable for the rotatable mounting between the carrying seat 122 and the support frame 123 to be achieved by means of a pivot connection and for the rotatable mounting between the support frame 123 and the reflective drive housing 121 to be achieved by means of a rotary support assembly 128, as: on the one hand, when the bearing seat 122 and the supporting frame 123 pivot as a whole around the second axis 123Y, the pivot connection relationship between the bearing seat 122 and the supporting frame 123 can ensure that the two cannot easily move relatively, that is, the anti-shake control of the camera module 1 around the second axis 123Y is more accurate; on the other hand, the driving unit 125 is disposed between the carrying base 122 and the base 1212, i.e., the driving unit 125 is away from the pivot connection structure, so that only a relatively small force is required to drive the carrying base 122 to rotate relative to the supporting frame 123, i.e., the camera module 1 is more easily driven and controlled in the anti-shake direction about the first axis 122X.

In one embodiment of the present application, the driving unit 125 is implemented as at least two coil-magnet pairs including at least two coils disposed at one of the carrier 122 and the base 1212 and at least two magnets disposed at the other of the carrier 122 and the base 1212, the at least two coils corresponding to the at least two magnets. In one embodiment of the present application, referring to fig. 3A, 3B and 6B, the driving unit 125 includes two coil-magnet pairs, and the driving unit 125 includes a first driving magnet 1252 and a second driving magnet 1254 fixed to the bottom surface 122B of the carrier 122, and a first driving coil 1251 and a second driving coil 1253 corresponding to the first driving magnet 1252 and the second driving magnet 1254, respectively, and directly or indirectly fixed to the base 12121 of the base 1212. In some embodiments of the present application, the first driving magnet 1252 and the second driving magnet 1254 are symmetrically disposed on the bottom surface 122B of the bearing seat.

Specifically, the reflex drive mechanism 12 includes a reflex portion wiring board 126 for supplying the current of the drive unit 125, the reflex portion wiring board 126 is fixed to the base 1212, and the first drive coil 1251 and the second drive coil 1253 are fixed and electrically connected to the reflex portion wiring board 126, so that the reflex portion wiring board 126 supplies the first drive coil 1251 and the second drive coil 1253 with the current. The base 12121 of the base 1212 has a base through hole 121211, the reflector circuit board 126 is fixed to the bottom surface of the base 12121, and the reflector circuit board 126 and the base through hole 121211 form a coil receiving cavity, and the first driving coil 1251 and the second driving coil 1253 are received in the coil receiving cavity. The bottom surface 122B of the carrier 122 is concavely formed with a first carrier magnet slot 1226 and a second carrier magnet slot 1227, the first driving magnet 1252 is fixed in the first carrier magnet slot 1226, and the second driving magnet 1254 is fixed in the second carrier magnet slot 1227, so as to reduce the size increase of the reflective driving mechanism 12 caused by the volume of the magnets.

The first driving coil 1251 is disposed opposite to the first driving magnet 1252 to form a first coil-magnet pair, the second driving coil 1253 is disposed opposite to the second driving magnet 1254 to form a second coil-magnet pair, and the magnitude and direction of the electromagnetic force between the first driving coil 1251 and the first driving magnet 1252 are changed by changing the magnitude and direction of the current in the first driving coil 1251 and the second driving coil 1253, and the magnitude and direction of the electromagnetic force between the second driving coil 1253 and the second driving magnet 1254 are changed, so that the resultant force direction of the first coil-magnet pair and the second coil-magnet pair is changed, and the rotation direction of the bearing seat 122 is further adjusted.

Specifically, as shown in fig. 8, the first coil-magnet pair provides a first driving force F1 to the carrier 122, the second coil-magnet pair provides a second driving force F2 to the carrier 122, and the magnitudes and directions of the first driving force and the second driving force are indicated by F1 and F2, for example, when the directions of the first driving force and the second driving force are opposite, one of the F1 and the F2 is a positive value, and the other is a negative value; the vertical distance from the first driving force F1 to the rotation axis of the support frame 123 is a first force arm, the first force arm is L1, the vertical distance from the second driving force F2 to the rotation axis of the support frame 123 is a second force arm, and the second force arm is L2. In one embodiment of the present application, the direction of the first driving force F1 and the direction of the second driving force F2 are perpendicular to the plane of the first axis 122X (X axis) and the second axis 123Y (Y axis), and the rotation axis of the support frame 123 is the second axis 123Y (Y axis).

The rotation of the bearing seat 122 relative to the supporting frame 123 is determined by the resultant force Fo of the first driving force F1 and the second driving force F2, fo=f1+f2, when Fo is equal to 0, the bearing seat 122 is stationary relative to the supporting frame 123; when Fo is not equal to 0, the bearing seat 122 rotates about the first axis 122X (X axis) relative to the support frame 123, and positive and negative values of Fo indicate the direction in which the bearing seat 122 rotates.

Rotation of the support frame 123 relative to the base 1212 is determined by the difference Mo between the moment M1 of the first driving force F1 and the moment M2 of the second driving force F2, mo=m1-m2=f1×l1-f2×l2, when Mo is equal to 0, the support frame 123 is stationary relative to the base 1212; when Mo is not equal to 0, the support frame 123 rotates about the second axis 123Y (Y axis) with respect to the base 1212, and positive and negative values of Mo indicate the direction in which the support frame 123 rotates.

As can be seen from the foregoing, when neither Fo nor Mo is 0, the carrier 122 rotates relative to the support frame 123, and the support frame 123 rotates relative to the base 1212, such that the carrier 122 rotates relative to the base 1212 in two directions, i.e., the carrier 122 rotates relative to the base 1212 about the first axis 122X (X axis) and the second axis 123Y (Y axis).

In one embodiment of the present application, the first force arm L1 and the second force arm L2 are equidistant, and when the first driving force F1 and the second driving force F2 are in the same direction and are equal in magnitude, the bearing seat 122 rotates about the first axis 122X (X axis) relative to the supporting frame 123, and the supporting frame 123 is stationary relative to the base 1212, such that the bearing seat 122 rotates about the first axis 122X (X axis) relative to the base 1212; when the first driving force F1 and the second driving force F2 are opposite in direction and equal in magnitude, the bearing seat 122 is stationary relative to the supporting frame 123, and the supporting frame 123 rotates about the second axis 123Y (Y axis) relative to the base 1212, so that the bearing seat 122 rotates about the second axis 123Y (Y axis) relative to the base 1212; when the first driving force F1 and the second driving force F2 are not equal in magnitude, the bearing base 122 rotates about the first axis 122X (X axis) with respect to the supporting frame 123, and the supporting frame 123 rotates about the second axis 123Y (Y axis) with respect to the base 1212, so that the bearing base 122 rotates about the first axis 122X (X axis) and the second axis 123Y (Y axis) with respect to the base 1212.

In one embodiment of the present application, the first and second drive magnets 1252, 1254 are adapted to be formed on the same piece of magnet, that is, in some embodiments of the present application, the first and second drive magnets 1252, 1254 have a unitary structure, essentially a piece of magnet, and accordingly, in this embodiment, the first and second carrier magnet slots 1226, 1227 are in communication to receive the connected first and second drive magnets 1252, 1254.

In one embodiment of the application, the reflective drive mechanism 12 further includes a position sensing unit 129. Referring to fig. 3A and 6B, the position sensing unit 129 includes a first position sensing element 1291 and a second position sensing element 1292 fixed to and electrically connected to the reflection part wiring board 126, the first position sensing element 1291 and the second position sensing element 1292 acquiring positional information of the magnet on the carrier 122 to determine positional information of the carrier 122, specifically, the first position sensing element 1291 is disposed opposite to the first driving magnet 1252, and the second position sensing element 1292 is disposed opposite to the second driving magnet 1254. The first position sensing element 1291 is eccentrically disposed in the first driving coil 1251, and the second position sensing element 1292 is eccentrically disposed in the second driving coil 1253.

In order to have a stable relative positional relationship between the support frame 123 and the carrier 122 with respect to the reflective drive housing 121, that is, in order to have a stable relative positional relationship between the support frame 123 and the carrier 122 with respect to the base 1212, in the embodiment of the present application, the reflective drive mechanism 12 further includes a reflective-portion magnetic attraction member 127. Accordingly, the reflecting part magnetic attraction member 127 is disposed between the bottom surface of the carrier 122 and the base 12121 of the base 1212 and between the bottom surface of the supporting frame 123 and the base 12121 of the base 1212, so that the carrier 122 and the supporting frame 123 are attracted to the base 12121 by the magnetic attraction force, preventing the carrier 122 and the supporting frame 123 from falling due to the movement of the reflection driving mechanism 12. The reflecting part magnetic attraction member 127 comprises a reflecting part magnetic attraction piece 1271, a frame magnetic attraction magnet 1273 and a bearing magnetic attraction magnet 1272, wherein the frame magnetic attraction magnet 1273 is fixed on the frame bottom surface 123B of the supporting frame 123, the reflecting part magnetic attraction piece 1271 is directly or indirectly fixed on the base 12121, at least three balls 1282 are kept between the supporting frame 123 and the base 12121 by the magnetic attraction between the frame magnetic attraction magnet 1273 and the reflecting part magnetic attraction piece 1271, and the supporting frame 123 can be supported on the base 12121 through at least three balls 1282; the carrying magnet 1272 is fixed on the bottom surface 122B of the carrying seat 122 and faces the reflecting portion magnetic sheet 1271, so that the carrying seat 122 can be supported on the supporting frame 123 by the magnetic attraction between the carrying magnet 1272 and the reflecting portion magnetic sheet 1271.

In one embodiment of the present application, the frame magnet 1273 includes a first frame magnet 12731 and a second frame magnet 12732, the bottom surface of the first support part 1231 is concavely formed with a first support frame magnet groove 12316, the bottom surface of the second support part 1232 is concavely formed with a second support frame magnet groove 12326, the first frame magnet 12731 is disposed in the first support frame magnet groove 12316, and the second frame magnet 12732 is disposed in the second support frame magnet groove 12326, thereby reducing the size of the reflective driving mechanism 12.

In one embodiment of the application, the load magnet 1272 may be a first drive magnet 1252 and a second drive magnet 1254. In one embodiment of the present application, the reflector magnetic sheet 1271 is attached to a surface of the reflector circuit board 126 away from the frame magnetic attraction magnet 1273, so that the reflector magnetic sheet 1271 can also provide structural reinforcement to the reflector circuit board 126 while being attracted to the magnet. In one embodiment of the present application, the reflective magnetic sheet 1271 is made of a material that can attract a magnet, such as an iron sheet.

In order to further provide a stable relative positional relationship between the bearing seat 122 and the supporting frame 123, in the embodiment of the present application, the reflection driving mechanism 12 further includes a reed 124, that is, an element having a resilient sheet structure. As shown in fig. 3A, 3B and 6A, the spring 124 includes an outer fixing portion 1241, an inner fixing portion 1243, and a wire portion 1242 connecting the outer fixing portion 1241 and the inner fixing portion 1243, the outer fixing portion 1241 is fixed to a frame top surface 123A of the support frame 123, and the inner fixing portion 1243 is fixed to a carrier top surface 122A of the carrier 122 such that the carrier 122 is held in the support frame 123, and in one embodiment of the present application, the carrier 122 is centrally disposed in the support frame 123 by the spring 124.

Specifically, the outer fixing portion 1241 includes a first outer fixing portion 12411, a second outer fixing portion 12412, a third outer fixing portion 12413 and a fourth outer fixing portion 12414, the inner fixing portion 1243 includes a first inner fixing portion 12431, a second inner fixing portion 12432, a third inner fixing portion 12433 and a fourth inner fixing portion 12434, and the wire portion 1242 includes a first wire spring 12421 and a second wire spring 12422. The first outer fixing portion 12411 and the second outer fixing portion 12412 are fixed to the top surface of the first supporting portion 1231, the first inner fixing portion 12431 and the second inner fixing portion 12432 are fixed to a side of the top surface 122A of the carrier 122, which is close to the first supporting portion 1231, and the first spring wire 12421 is connected to the first outer fixing portion 12411, the second outer fixing portion 12412, the first inner fixing portion 12431 and the second inner fixing portion 12432 to form a first spring portion; the third outer fixing portion 12413 and the fourth outer fixing portion 12414 are fixed on the top surface of the second supporting portion 1232, the third inner fixing portion 12433 and the fourth inner fixing portion 12434 are fixed on a side of the top surface 122A of the bearing seat 122, which is close to the second supporting portion 1232, and the second spring wire 12422 is connected to the third outer fixing portion 12413 and the fourth outer fixing portion 12414, the third inner fixing portion 12433 and the fourth inner fixing portion 12434 to form a second spring portion. The first reed portion and the second reed portion are axisymmetric about a second axis 123Y (Y axis), so that the bearing seat 122 is centrally disposed within the support frame 123.

In one embodiment of the present application, the carrier 122 further includes four first fixing protrusions 122A1 formed on the top surface 122A of the carrier, and the first inner fixing portion 12431, the second inner fixing portion 12432, the third inner fixing portion 12433 and the fourth inner fixing portion 12434 are respectively fixed to the top surface 122A of the carrier by being fixed to the first fixing protrusions 122A 1; the support frame 123 further includes four second fixing protrusions 123A1 formed on the top surface 123A of the frame, and the first, second, third and fourth external fixing portions 12411, 12412, 12413 and 12414 are respectively fixed to the top surface 123A of the frame by being fixed to the second fixing protrusions 123A 1.

In one embodiment of the present application, the first wire 12421 has a first wire rotation axis 124211, the first wire 12421 is symmetrical about the first wire rotation axis 124211, the second wire 12422 has a second wire rotation axis 124221, the second wire 12422 is symmetrical about the second wire rotation axis 124221, and the first wire rotation axis 124211 and the second wire rotation axis 124221 are co-directional with the first axis 122X (X axis), such that the reed 124 has less resistance to rotation when the carrier 122 is rotated about the first axis 122X (X axis) relative to the support frame 123.

In one embodiment of the present application, an outer connecting portion 12415 integrally extends between the first outer fixing portion 12411 and the third outer fixing portion 12413 adjacent to the frame connecting portion 1233, and an inner connecting portion 12435 integrally extends between the first inner fixing portion 12431 and the third inner fixing portion 12433 adjacent to the frame connecting portion 1233, so that the first and second reed portions are connected to each other, thereby providing convenience in mounting the reed 124.

In another embodiment of the present application, referring to fig. 9 to 11B, the driving unit 125 includes three coil-magnet pairs, the driving unit 125 includes a first driving magnet 1252, a second driving magnet 1254, a third driving magnet 1256 fixed to the bottom surface 122B of the carrier 122, and a first driving coil 1251, a second driving coil 1253, and a third driving coil 1255 corresponding to the first driving magnet 1252, the second driving magnet 1254, and the third driving magnet 1256, respectively, and directly or indirectly fixed to the base 12121 of the base 1212, the first driving magnet 1252 and the second driving magnet 1254 are symmetrically disposed on the bottom surface 122B of the carrier, and the third driving magnet 1256 is disposed in the middle of the first driving magnet 1252 and the second driving magnet 1254.

Specifically, the reflective wiring board 126 is fixed to the bottom surface of the base 12121, the reflective wiring board 126 and the base through hole 121211 form a coil accommodation chamber in which the first, second and third driving coils 1251, 1253, 1255 are accommodated. The bottom surface 122B of the carrier 122 is concavely formed with a first carrier magnet slot 1226, a second carrier magnet slot 1227 and a third carrier magnet slot 1228, the first driving magnet 1252 is fixed in the first carrier magnet slot 1226, the second driving magnet 1254 is fixed in the second carrier magnet slot 1227, and the third driving magnet 1256 is fixed in the third carrier magnet slot 1228, so as to reduce the size increase of the reflective driving mechanism 12 caused by the volume of the magnets.

The first driving coil 1251 is disposed opposite to the first driving magnet 1252 to form a first coil-magnet pair, the second driving coil 1253 is disposed opposite to the second driving magnet 1254 to form a second coil-magnet pair, and the third driving coil 1255 is disposed opposite to the third driving magnet 1256 to form a third coil-magnet pair. By changing the magnitude and direction of the current in the first driving coil 1251, the second driving coil 1253, and the third driving coil 1255, the magnitude and direction of the electromagnetic force between the first driving coil 1251 and the first driving magnet 1252 are changed, the magnitude and direction of the electromagnetic force between the second driving coil 1253 and the second driving magnet 1254 are changed, the magnitude and direction of the electromagnetic force between the third driving coil 1255 and the third driving magnet 1256 are changed, and the rotation direction of the bearing base 122 is further adjusted.

Specifically, as shown in fig. 10, the first coil-magnet pair provides a first driving force F1 to the carrier 122, the second coil-magnet pair provides a second driving force F2 to the carrier 122, and the third coil-magnet pair provides a third driving force F3 to the carrier 122, where F1, F2, and F3 represent the magnitudes and directions of the first driving force, the second driving force, and the third driving force, for example, when the first driving force is opposite to the second driving force, one of F1 and F2 is positive, and the other is negative; the vertical distance from the first driving force F1 to the rotation axis of the support frame 123 is a first force arm, the first force arm is L1, the vertical distance from the second driving force F2 to the rotation axis of the support frame 123 is a second force arm, the second force arm is L2, the third coil-magnet pair is located in the middle, and the distance L3 from the third driving force F3 to the rotation axis of the support frame 123 is 0. In one embodiment of the present application, the direction of the first driving force F1, the direction of the second driving force F2, and the direction of the third driving force F3 are perpendicular to the plane of the first axis 122X (X axis) and the second axis 123Y (Y axis), and the rotation axis of the support frame 123 is the second axis 123Y (Y axis).

The rotation of the carrying seat 122 relative to the supporting frame 123 is determined by the resultant force Fz of the first driving force F1, the second driving force F2 and the third driving force F3, fz=f1+f2+f3, when Fz is equal to 0, the carrying seat 122 is stationary relative to the supporting frame 123; when Fz is not equal to 0, the bearing seat 122 rotates about the first axis 122X (X axis) relative to the support frame 123, and positive and negative values of Fz indicate the direction in which the bearing seat 122 rotates.

As can be seen from the foregoing, when neither Fz nor Mo is 0, the carrier 122 rotates relative to the support frame 123, and the support frame 123 rotates relative to the base 1212, such that the carrier 122 rotates relative to the base 1212 in two directions, i.e., the carrier 122 rotates relative to the base 1212 about the first axis 122X (X axis) and the second axis 123Y (Y axis).

In a specific embodiment of the present application, the first force arm L1 and the second force arm L2 are equal in distance, and the third driving force F3 is 0 from the rotation axis of the support frame 123. The third driving force F3 provided by the third coil-magnet pair in the middle is used for driving the bearing seat 122 to rotate around the first axis 122X (X axis) relative to the base 1212, and the first coil-magnet pair and the second coil-magnet pair symmetrically disposed on two sides are suitable for driving the bearing base 1212 to rotate around the first axis 122X (X axis) and the second axis 123Y (Y axis). That is, in a particular embodiment of the present application, the third coil-magnet pair is adapted to drive the bearing mount 122 to rotate about a first axis 122X relative to the support frame 123, and the first and second coil-magnet pairs are adapted to cooperate to drive the bearing mount 122 to rotate about a second axis 123Y perpendicular to the first axis 122X relative to the reflective drive housing 121 to rotate about the second axis 123Y relative to the reflective drive housing 121 via a pivotal connection between the bearing mount 122 and the support frame 123.

More specifically, in this particular embodiment, the difference between the first moment generated by the first coil-magnet pair acting on the carrier 122 and the second moment generated by the second coil-magnet pair acting on the carrier 122 determines the movement of the carrier 122 and the support frame 123 as a whole relative to the reflective drive housing 121. When the first driving force F1 and the second driving force F2 are opposite in direction and equal in magnitude, the supporting frame 123 rotates about the second axis 123Y (Y axis) with respect to the base 1212, so that the bearing base 122 rotates about the second axis 123Y (Y axis) with respect to the base 1212; when the first driving force F1 and the second driving force F2 are not equal in magnitude, the first driving force F1, the second driving force F2 and the third driving force F3 together drive the bearing seat 122 to rotate around the first axis 122X (X axis) and the second axis 123Y (Y axis) relative to the base 1212.

In one embodiment of the present application, the direction of the driving force provided by the first coil-magnet pair is always opposite to the direction of the driving force provided by the second coil-magnet pair, so that the loss of the driving force is reduced. For example, when the magnetic pole directions of the first driving magnet 1252 and the second driving magnet 1254 are the same, the directions of the currents in the first driving coil 1251 and the second driving coil 1253 are reversed (the winding patterns of the first driving coil 1251 and the second driving coil 1253 are set to coincide), so that the driving forces in opposite directions are provided, and the opposite directions of the currents are always maintained, as shown in fig. 11B. Of course, in other embodiments of the present application, when the magnetic pole directions of the first driving magnet 1252 and the second driving magnet 1254 are the same, the first driving coil 1251 and the second driving coil 1253 are controlled to have the same current direction (the winding patterns of the first driving coil 1251 and the second driving coil 1253 are set to be identical), so that the driving forces having opposite directions are provided, so that the opposite current directions are always maintained. It should be appreciated that the winding patterns of the first and second driving coils 1251 and 1253 may be adjusted such that the forces generated by the first and second coil-magnet pairs act on the carrier 122 in opposite directions.

In the embodiment of the present application, the reflective driving mechanism 12 further has a fool-proof mechanism. Specifically, the first and second driving coils 1251 and 1253 are connected in series and the coil winding directions of the first and second driving coils 1251 and 1253 are reversed, so that when the magnetic pole directions of the first and second driving magnets 1252 and 1254 are reversed, the current directions in the first and second driving coils 1251 and 1253 are the same, thereby providing a driving force in opposite directions. That is, in this embodiment, the first driving coil 1251 and the second driving coil 1253 are connected in series, the winding direction of the first driving coil 1251 is opposite to the winding direction of the second driving coil 1253, and the magnetic poles of the first driving magnet 1252 and the second driving magnet 1254 are oriented the same. It should be understood that in other embodiments of the present application, the first driving coil 1251 and the second driving coil 1253 may be connected in series, the winding direction of the first driving coil 1251 is the same as the winding direction of the second driving coil 1253, and the magnetic poles of the first driving magnet 1252 and the second driving magnet 1254 are opposite.

In one embodiment of the present application, the three coil-magnet pairs and the first and second coil-magnet pairs respectively drive the bearing base 122 to rotate about the first axis 122X (X axis) relative to the support frame 123, and drive the support frame 123 to rotate about the second axis 123Y (Y axis) relative to the base 1212. Specifically, the driving forces of the first driving force F1 and the second driving force F2 are opposite in direction and equal in magnitude, so that the resultant force of the first driving force F1 and the second driving force F2 is 0, and only the support frame 123 can be driven to rotate about the second axis 123Y (Y axis) relative to the base 1212, and then the bearing base 122 is controlled to rotate about the first axis 122X (X axis) relative to the support frame 123 by the magnitude of the third driving force F3, and the rotational direction of the bearing base 122 is controlled to rotate about the first axis 122X (X axis) relative to the support frame 123 by the direction of the third driving force F3.

In one embodiment of the present application, the first driving magnet 1252, the second driving magnet 1254 and the third driving magnet 1256 are adapted to be formed on the same magnet, and in this case, the first carrier magnet slot 1226, the second carrier magnet slot 1227 and the third carrier magnet slot 1228 are connected to accommodate the connected first driving magnet 1252, second driving magnet 1254 and third driving magnet 1256.

In one embodiment of the application, the reflective drive mechanism 12 further includes a position sensing unit 129. Referring to fig. 9, the position sensing unit 129 includes a first position sensing element 1291 and a second position sensing element 1292 fixed to and electrically connected to the reflection part circuit board 126, wherein the first position sensing element 1291 and the second position sensing element 1292 acquire position information of the magnet on the carrier 122 to determine the position information of the carrier 122, specifically, the first position sensing element 1291 is disposed opposite to the first driving magnet 1252, and the second position sensing element 1292 is disposed opposite to the second driving magnet 1254. The first position sensing element 1291 is eccentrically disposed in the first driving coil 1251, and the second position sensing element 1292 is eccentrically disposed in the second driving coil 1253.

In one embodiment of the present application, the reflective magnetic attraction member 127 is disposed between the bottom surface of the carrier 122, the bottom surface of the supporting frame 123 and the base 12121 of the base 1212, so that the carrier 122 and the supporting frame 123 are attracted to the base 12121 by the magnetic attraction force, and the carrier 122 and the supporting frame 123 are prevented from falling due to the movement of the reflective driving mechanism 12. The reflecting part magnetic attraction member 127 comprises a reflecting part magnetic attraction piece 1271, a frame magnetic attraction magnet 1273 and a bearing magnetic attraction magnet 1272, wherein the frame magnetic attraction magnet 1273 is fixed on the frame bottom surface 123B of the supporting frame 123, the reflecting part magnetic attraction piece 1271 is directly or indirectly fixed on the base 12121, at least three balls 1282 are kept between the supporting frame 123 and the base 12121 by the magnetic attraction between the frame magnetic attraction magnet 1273 and the reflecting part magnetic attraction piece 1271, and the supporting frame 123 can be supported on the base 12121 through at least three balls 1282; the carrying magnet 1272 is fixed on the bottom surface 122B of the carrying seat 122 and faces the reflecting portion magnetic sheet 1271, so that the carrying seat 122 can be supported on the supporting frame 123 by the magnetic attraction between the carrying magnet 1272 and the reflecting portion magnetic sheet 1271.

In one embodiment of the application, the load magnet 1272 may be a first drive magnet 1252, a second drive magnet 1254, and a third drive magnet 1256. In one embodiment of the present application, the reflector magnetic sheet 1271 is attached to a surface of the reflector circuit board 126 away from the frame magnetic attraction magnet 1273, so that the reflector magnetic sheet 1271 can also provide structural reinforcement to the reflector circuit board 126 while being attracted to the magnet. In one embodiment of the present application, the reflective magnetic sheet 1271 is made of a material that can attract a magnet, such as an iron sheet.

In summary, the image capturing module 1 and the reflection driving mechanism 12 thereof according to the embodiment of the present application are illustrated, wherein the reflection driving mechanism 12 drives the reflection element 11 of the image capturing module 1 to rotate through a compact structural arrangement so as to realize optical anti-shake of the image capturing module 1. And, the reflection anti-shake mechanism has a relatively small size, which is beneficial to miniaturization of the camera module 1.

It will be appreciated by persons skilled in the art that the embodiments of the application described above and shown in the drawings are by way of example only and are not limiting. The objects of the present application have been fully and effectively achieved. The functional and structural principles of the present application have been shown and described in the examples and embodiments of the application may be modified or practiced without departing from the principles described.

Claims

1. A reflective drive mechanism, comprising:

a support frame rotatably mounted in the receiving cavity;

a bearing seat rotatably mounted on the support frame; and

2. The reflex drive mechanism according to claim 1, wherein the first coil-magnet pair and the second coil-magnet pair are symmetrically arranged with respect to a central axis set by the bearing seat.

3. The reflex drive mechanism of claim 1 wherein the first and second coil-magnet pairs are adapted to cooperate to drive rotation of the bearing mount about a first axis relative to the support frame, and the first and second coil-magnet pairs are adapted to cooperate to drive rotation of the bearing mount relative to the reflex drive housing about a second axis perpendicular to the first axis to drive rotation of the support frame relative to the reflex drive housing about the second axis through a pivotal connection between the bearing mount and the support frame.

4. A reflex drive assembly as recited in claim 3 wherein the resultant force of the first force generated by the first coil-magnet pair acting on the load carrier and the second force generated by the second coil-magnet pair acting on the load carrier determines the movement of the load carrier relative to the support frame, and the difference between the first moment generated by the first coil-magnet pair acting on the load carrier and the second moment generated by the second coil-magnet pair acting on the load carrier determines the movement of the load carrier and the support frame as a whole relative to the reflex drive housing.

5. The reflective drive mechanism of claim 1, wherein the reflective drive housing comprises a top cover and a base that snap-fit to each other, the base having a base through-hole formed therethrough at a bottom thereof, the drive unit further comprising a reflective portion wiring board secured within the base through-hole, the first and second drive coils being electrically connected to the reflective portion wiring board.

6. The reflex drive mechanism according to claim 5, wherein the drive unit includes a third drive magnet provided to the carrier and located between the first drive magnet and the second drive magnet, and a third drive coil provided to the reflex drive housing and corresponding to the third drive magnet, the third drive coil being located between the first drive coil and the second drive coil, wherein the third drive coil and the third drive magnet constitute the third coil-magnet pair.

7. The reflective drive mechanism of claim 6, wherein the first and second coil magnet pairs are symmetrically distributed with respect to the third coil-magnet pair.

8. The reflex drive mechanism of claim 6 wherein the third coil-magnet pair is adapted to drive the bearing mount to rotate about a first axis relative to the support frame, the first and second coil-magnet pairs being adapted to cooperate to drive the bearing mount to rotate about a second axis perpendicular to the first axis relative to the reflex drive housing to rotate about the second axis relative to the reflex drive housing through a pivotal connection between the bearing mount and the support frame.

9. The reflex drive assembly according to claim 8, wherein a difference between a first moment generated by the first coil-magnet pair acting on the carrier and a second moment generated by the second coil-magnet pair acting on the carrier determines a movement of the carrier and the support frame as a whole relative to the reflex drive housing, wherein a direction of a first force generated by the first coil-magnet pair acting on the carrier is opposite to a direction of a second force generated by the second coil-magnet pair acting on the carrier.

10. The reflective drive mechanism of claim 9, wherein the magnitude of the first force is equal to the magnitude of the second force.

11. The reflex drive mechanism according to claim 9, wherein the first drive coil and the second drive coil are connected in series with each other, a winding direction of the first drive coil is opposite to a winding direction of the second drive coil, and magnetic poles of the first drive magnet and the second drive magnet are oriented the same.

12. The reflex drive mechanism according to claim 9, wherein the first drive coil and the second drive coil are connected in series with each other, a winding direction of the first drive coil is the same as a winding direction of the second drive coil, and magnetic poles of the first drive magnet and the second drive magnet are opposite in orientation.

13. The reflective drive mechanism of claim 1, further comprising a rotary support assembly by which the support frame is rotatably mounted within the receiving cavity, the support frame having at least one support slot concavely formed in a top surface thereof, the carrier comprising a carrier body and at least one rotational shaft extending convexly and laterally from the carrier body, the carrier body having a mounting portion adapted to mount a reflective element thereon, the at least one rotational shaft being fittingly mounted within the at least one support slot such that the carrier is rotatable relative to the support frame by pivotal connection of the at least one rotational shaft and the at least one support slot.

14. The reflective driving mechanism of claim 13, wherein the at least one rotation shaft comprises a first rotation shaft and a second rotation shaft extending outwardly from opposite sides of the bearing body, respectively, the first rotation shaft and the second rotation shaft being coaxially disposed, the at least one support groove comprising a first support groove and a second support groove concavely formed at a top surface of the support frame, the first support groove and the second support groove being coaxially disposed, wherein the first rotation shaft is fittingly mounted within the first support groove, and the second rotation shaft is fittingly mounted within the second support groove, wherein the first rotation shaft and the second rotation shaft are located at a top of the bearing body.

15. The reflective drive mechanism of claim 14, wherein the support frame comprises a first support portion, a second support portion, and a frame connection portion extending between the first support portion and the second support portion, wherein the first support groove is concavely formed in a top surface of the first support portion, and the second support groove is concavely formed in a top surface of the second support portion.

16. The reflex drive mechanism according to claim 1, further comprising a first rotation limiter for limiting a rotation angle of the carrying seat with respect to the support frame, and a second rotation limiter for limiting a rotation angle of the support frame with respect to the reflex drive housing.

17. The reflection driving mechanism according to claim 1, wherein the reflection driving mechanism further comprises a reflection portion magnetic attraction member for attracting the carrier and the support frame toward the reflection driving housing, wherein the reflection portion magnetic attraction member includes a frame magnetic attraction magnet fixed to the support frame and a reflection portion magnetic conductive sheet provided to the reflection driving housing so as to attract the carrier toward the reflection driving housing by a magnetic attraction force between the frame magnetic attraction magnet and the reflection portion magnetic conductive sheet and a magnetic attraction force between the first and second drive magnets and the reflection portion magnetic conductive sheet, and attract the carrier toward the reflection driving housing by a magnetic attraction force between the first and second drive magnets and the reflection portion magnetic conductive sheet.

18. The reflective drive mechanism of claim 1, further comprising a reed comprising an outer fixation portion fixed to a top surface of the support frame, an inner fixation portion fixed to a top surface of the carrier, and a reed portion extending between the inner fixation portion and the outer fixation portion, wherein the carrier is centrally retained within the support frame by the reed.

19. A camera module, comprising:

a reflective drive mechanism as claimed in any one of claims 1 to 18;

a reflective element mounted to the reflective drive mechanism;

a lens module held on a light reflection path of the reflection element; and