Reflection module and camera module

Abstract

The invention relates to a reflection module and a camera module. The reflection module includes: a base having an internal space; the movable assembly is used for bearing the reflecting element, the reflecting element is used for reflecting light rays incident in the Z-axis direction to the X-axis direction, the Y-axis direction is perpendicular to the X-axis direction and the Z-axis direction, and the movable assembly is rotatably arranged in the base around the X-axis direction and the Y-axis direction; the two groups of sensing assemblies are respectively used for sensing the rotation strokes of the movable assembly around the X-axis direction and the Y-axis direction, each group of sensing assembly comprises a sensing magnet and a sensing element which are oppositely arranged, one is arranged on the movable assembly, the other is arranged on the base, the sensing magnet is arranged on the radial side of a rotation shaft of the movable assembly along the X-axis direction or the Y-axis direction, and the sensing element is arranged on the base. The two magnetic poles, facing the corresponding sensing element, of each sensing magnet are arranged in the Z-axis direction, so that the magnetic field change of the sensing magnets in the rotating process is more obvious, and the sensing precision of the sensing elements is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field related to optical imaging, and in particular to a reflection module and a camera module. Background Art

[0002] With the popularization of mobile electronic devices, the related technologies of camera modules applied to mobile electronic devices for helping users to obtain images have been rapidly developed and improved. Currently in the market, consumers have an increasing demand for shooting with camera modules configured in mobile electronic devices.

[0003] Currently, a driving device and a sensing device are usually set in the camera module to realize the optical image stabilization function, wherein the driving device realizes the precise rotation of the reflective element based on the coordinated action of the electromagnetic coil and the driving magnet, and the sensing device obtains the magnetic field information change of the sensing magnet through the sensing element to detect the rotation stroke of the reflective element.

[0004] However, the magnetic field generated by magnets other than the sensing magnet may cause the sensing magnetic field to be distorted, thereby affecting the sensing accuracy of the sensing device. Summary of the invention

[0005] Based on this, it is necessary to provide a reflection module and camera module that can effectively reduce magnetic field interference and improve sensing accuracy to address the problem that other magnets other than the sensing magnet in the current camera module may affect the sensing magnetic field and cause a decrease in sensing accuracy.

[0006] The present application first provides a reflection module, including: a base having an internal space; A movable component, used for carrying a reflective element, wherein the reflective element is used for reflecting light incident along the Z-axis direction to the X-axis direction, the Y-axis direction is perpendicular to the X-axis direction and the Z-axis direction, and the movable component is rotatably arranged in the base around the X-axis direction and the Y-axis direction; Two groups of sensing components are respectively used to sense the rotation stroke of the movable component around the X-axis direction and the Y-axis direction. Each group of the sensing components includes relatively arranged sensing magnets and sensing elements, one of which is arranged on the movable component and the other is arranged on the base. The sensing magnet is arranged on the radial side of the rotation axis of the movable component along the X-axis or Y-axis direction, and the two magnetic poles of each sensing magnet facing the corresponding sensing element are arranged along the Z-axis direction.

[0007] In one embodiment, the sensing magnet is fixed to the movable component, and the sensing element is fixed relative to the base.

[0008] In one embodiment, the base includes a fixed plate, the movable component includes an intermediate frame and a carrier, the fixed plate, the intermediate frame and the carrier are stacked along the X-axis direction, the intermediate frame can rotate around the X-axis direction relative to the fixed plate, and the carrier can rotate around the Y-axis direction relative to the intermediate frame.

[0009] In one embodiment, the reflection module further includes two groups of driving components arranged on the negative side of the movable component along the Z-axis, each group of the driving components includes a driving magnet and a driving coil arranged oppositely along the Z-axis direction, one of the driving magnet and the corresponding driving coil is arranged on the movable component, and the other is arranged on the base; The first driving assembly is used to drive the carrier to rotate relative to the intermediate frame around the Y-axis direction, and the second driving assembly is used to drive the intermediate frame to rotate relative to the fixed plate around the X-axis direction.

[0010] In one embodiment, the first driving component includes a first driving magnet and a first driving coil, and the first driving magnet has two magnetic poles distributed along the X-axis direction near the side of the first driving coil; The second driving component includes two second driving magnets and two second driving coils. The two second driving magnets are arranged on both sides of the first driving magnet along the Y-axis direction, and the second driving magnet has only one magnetic pole close to the side corresponding to the second driving coil.

[0011] In one embodiment, the reflection module also includes a first magnetic attraction component and a second magnetic attraction component, the first magnetic attraction component includes a first magnetic attraction magnet and a first magnetic yoke arranged opposite to each other along the X-axis direction, one of which is fixed to the carrier, and the other is fixed to the middle frame; the second magnetic attraction component includes a second magnetic attraction magnet and a second magnetic yoke arranged opposite to each other along the X-axis direction, one of which is fixed to the middle frame, and the other is fixed to the fixed plate.

[0012] In one embodiment, the first magnetic yoke and the second magnetic yoke are both fixed to the middle frame.

[0013] In one embodiment, the first magnetic attraction component is located on the positive Z-axis side of the rotation axis of the carrier along the Y-axis. In one embodiment, the reflection module includes two sets of sensing components, the first sensing component is used to sense the rotation stroke of the carrier around the Y-axis direction, including a first sensing magnet arranged on the negative X-axis side of the carrier and a first sensing element arranged relative to the base; the second sensing component is used to sense the rotation stroke of the carrier around the X-axis direction, including a second sensing magnet arranged on both sides of the carrier along the Y-axis direction and a second sensing element arranged relative to the base.

[0014] In one of the embodiments, the carrier has a magnet mounting portion protruding along the negative direction of the X-axis and penetrating the middle frame, and the first sensing magnet is embedded in the side surface of the magnet mounting portion along the negative direction of the X-axis.

[0015] In one embodiment, one of the intermediate frame or the fixed plate has a support portion protruding along the X-axis direction to form a fulcrum on the opposite surface of the other, and an auxiliary ball is movably installed between the intermediate frame and the fixed plate to support the intermediate frame to rotate around the X-axis direction with the fulcrum as the center; At least two rotating balls are movably installed between the middle frame and the carrier along the Y-axis direction to support the carrier to rotate relative to the middle frame around the Y-axis direction.

[0016] In one embodiment, the middle frame is provided with a first auxiliary ball groove along the negative direction of the X-axis, and the fixed plate is provided with a second auxiliary ball groove along the positive direction of the X-axis, and the auxiliary ball can be movably clamped between the first auxiliary ball groove and the second auxiliary ball groove; a gasket is fixed to the bottom wall of the first auxiliary ball groove.

[0017] In one embodiment, the first sensing component includes two first sensing magnets symmetrically arranged on both sides of the first magnetic attraction magnet along the Z-axis direction.

[0018] In one embodiment, at least two auxiliary balls are movably mounted between the intermediate frame and the fixed plate, and the support portion at least partially deviates from a line connecting two of the auxiliary balls to form a support surface between the support portion and each of the auxiliary balls; The second magnetic attraction component includes two second magnetic attraction magnets, and the projection of the midpoints of the two second magnetic attraction magnets along the X-axis direction is located within the supporting surface.

[0019] In one embodiment, a circuit board groove is formed on the outer wall of the base, a circuit board is embedded in the circuit board groove, the sensing element is electrically connected to the circuit board, and a sensing through groove corresponding to the sensing element is formed on the bottom wall of the circuit board groove.

[0020] In one embodiment, the circuit board includes a circuit bottom plate located on the negative side of the base along the Z-axis, and a coil through groove is formed through the bottom wall of the circuit board groove corresponding to the circuit bottom plate. The driving component includes a driving magnet and a driving coil that are relatively arranged along the Z-axis direction. The driving coil is electrically connected to the circuit bottom plate and embedded in the coil through groove, and the driving magnet is fixed to the side of the movable component along the negative direction of the Z-axis.

[0021] The second aspect of the present application provides a camera module, comprising: the above-mentioned reflection module; a reflection element, which is installed on the reflection module; a lens module, which is arranged in the base and is held on the light reflection path of the reflection element; an imaging module, which is arranged on the light emitting side of the base and receives the light emitted by the lens module for imaging; and a shell, which is covered on the base.

[0022] The above-mentioned reflection module, by setting the driving component on the negative direction side of the Z axis of the movable component and setting the sensing magnet on the X axis or Y axis side of the movable component, can physically separate the sensing magnet and the driving component through the structure of the movable component itself, thereby minimizing the influence of the stray magnetic field generated by the driving component on the magnetic field of the sensing magnet, so as to achieve the effect of improving the sensing accuracy; in addition, by setting the sensing magnet on the radial side of the rotation direction of the movable component and setting the two magnetic poles facing the sensing element along the Z axis direction, the magnetic field change of the sensing magnet during the rotation process is more obvious, thereby effectively improving the sensing accuracy of the sensing element. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional image of the camera module of this application after the shell is hidden; Figure 2 An exploded view of the reflection module for this application; Figure 3 A three-dimensional diagram of the movable components in the reflection module of the present application; Figure 4 for Figure 2 A three-dimensional image of the medium carrier at another angle; Figure 5 for Figure 2 A three-dimensional view of the middle shell at another angle; Figure 6 for Figure 2 A magnified view of the middle frame in ; Figure 7 for Figure 6 An exploded view of the middle frame; Figure 8 for Figure 2 A magnified image of the medium carrier; Fig. 9 for Figure 6 A three-dimensional image of the middle frame at another angle; Fig.10 for Figure 8 An exploded view of the carrier; Fig.11 for Figure 2 A three-dimensional image of the circuit board at another angle; Fig.12 for Figure 2 Exploded view of the middle shell; Fig.13 for Figure 3 A schematic diagram of the active module along the Y-axis direction; Fig.14 for Figure 3 Schematic diagram of the active module along the positive direction of the X-axis; Fig.15 for Figure 3 A three-dimensional diagram of the activity module from an upward perspective; Fig.16 for Figure 1 Exploded diagram of the buffer module and the reflection module; Fig.17 This is a cross-sectional view of the camera module of this application.

[0024] Reference numerals: 100, reflection module; 200, lens module; 300, imaging module; 310, photosensitive component; 310a, photosensitive chip; 310b, photosensitive circuit board; 320, filter component; 320a, filter element; 320b, filter bracket; 400, housing; 10. Base; 10a. Fixed plate; 10a1. Support part; 10a2. Second auxiliary ball groove; 10a3. Second magnetic magnet groove; 11. Circuit board groove; 111. Sensing groove; 112. Coil groove; 20. Reflection element; 30. Movable assembly; 31. Intermediate frame; 31a. Frame body; 31b. Support arm; 31b1. First rotating ball groove; 311. Auxiliary ball; 312. Rotating ball; 313. First auxiliary ball groove; 314. Gasket; 315. Rotating shaft groove; 32. Carrier; 321. Magnet mounting part; 322. Loading surface; 323. Groove; 324. Second rotating ball groove; 325. First magnetic magnet groove; 326. Driving magnet groove; 40. Driving assembly; 41. Driving magnet; 41a , the first driving magnet; 41b, the second driving magnet; 42, the driving coil; 42a, the first driving coil; 42b, the second driving coil; 50, the sensing component; 51, the sensing magnet; 51a, the first sensing magnet; 51b, the second sensing magnet; 52, the sensing element; 52a, the first sensing element; 52b, the second sensing element; 61a, the first magnetic attraction magnet; 61b, the second magnetic attraction magnet; 62a, the first magnetic yoke; 62b, the second magnetic yoke; 70, the circuit board; 71, the circuit bottom plate; 72, the circuit side plate; 721, the driving control chip; 73, the circuit back plate; 74, the electrical derivation part; 80, the buffer module; 81, the first buffer; 82, the second buffer; 83, the third buffer; 84, the fourth buffer; 85, the fixing frame. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0031] For ease of description, in this application, the direction parallel to the incident optical axis of the light of the reflective element 20 is defined as the Z-axis direction, the direction parallel to the optical axis of the light emitted after reflection by the reflective element 20 is defined as the X-axis direction, and the direction perpendicular to both the Z-axis and the X-axis is defined as the Y-axis direction; further, the incident direction of the light of the reflective element 20 is defined as the negative direction of the Z-axis, and vice versa as the positive direction of the Z-axis, and the light emitting direction of the reflective element 20 is defined as the positive direction of the X-axis, and vice versa as the negative direction of the X-axis. In some cases, the X-axis direction is perpendicular to the Z-axis direction. It should be understood that the verticality described in this application includes both verticality with an intersection and spatial verticality without an intersection.

[0032] It should be noted that the above definitions of the positive direction of the X-axis, the negative direction of the X-axis, the positive direction of the Y-axis, and the negative direction of the Y-axis are only specific reference direction settings made for the convenience of explaining the relevant technical solutions in this application, and are not intended to limit the absolute pointing of the relevant directions in actual application scenarios. This definition does not mean that there must be an absolute zero point between the positive direction and the negative direction. They are only set based on the relative direction of the light propagation path of the reflective element to simplify the description and understanding of the relevant technical features. The positive direction and the negative direction are two opposite directions of an axis, used to describe different directions along the axis. In different usage scenarios, the change in the direction of the actual light propagation path caused by external factors may cause the positive or negative direction of the X-axis and the positive or negative direction of the Y-axis to deviate from the above definition, but as long as it is within the scope of the reflection function principle of the reflective element 20 and the corresponding optical path design, it should be regarded as a reasonable extension and expansion of the direction definition of this application.

[0033] Please combine Figure 1 , Figure 2 as well as Figure 3As shown, the present application first provides a reflection module 100, including: a base 10, having an internal space; a movable component 30, used to carry a reflection element 20, the reflection element 20 is used to reflect the light incident along the Z-axis direction to the X-axis direction, the Y-axis direction is perpendicular to the X-axis direction and the Z-axis direction, the movable component 30 is rotatably arranged in the base 10 around the X-axis direction and the Y-axis direction; two groups of sensing components 50, respectively used to sense the rotation stroke of the movable component 30 around the X-axis direction and the Y-axis direction, each group of sensing components 50 includes a sensing magnet 51 and a sensing element 52 arranged oppositely, one of which is arranged on the movable component 30, and the other is arranged on the base 10, the sensing magnet 51 is arranged on the radial side of the rotation axis of the movable component 30 along the X-axis or Y-axis direction, and the two magnetic poles of each sensing magnet 51 facing the corresponding sensing element 52 are both arranged along the Z-axis direction.

[0034] More specifically, the two groups of sensing components 50 are respectively used to sense the rotational travel of the carrier 32 in the movable component 30 along the X-axis direction and the Y-axis direction. Each group of sensing components 50 includes relatively arranged sensing magnets 51 and sensing elements 52, one of which is arranged on the movable component 30, and the other is arranged on the base 10. The sensing magnet 51 used to sense the rotational travel of the carrier 32 around the X-axis direction is arranged on the radial side of the rotation axis of the carrier 32 parallel to the X-axis along the Y-axis direction, and the sensing magnet 51 used to sense the rotational travel of the carrier 32 around the Y-axis direction is arranged on the radial side of the rotation axis of the carrier 32 parallel to the Y-axis along the X-axis direction, and the two magnetic poles of each sensing magnet 51 facing the corresponding sensing element 52 are arranged along the Z-axis direction.

[0035] In the present application, the sensing magnet 51 is arranged on the radial side of the rotation axis corresponding to the carrier 32, and the two magnetic poles facing the sensing element 52 are arranged along the Z-axis direction (that is, the magnetic pole direction of each sensing magnet 51 is arranged along the tangential direction of the rotation direction corresponding to the carrier 32), so that the magnetic field change of the sensing magnet 51 during the rotation process is more obvious, thereby effectively improving the sensing accuracy of the sensing element 52.

[0036] In some embodiments, the reflection module 100 also includes a driving component 40 disposed on the negative side of the movable component 30 along the Z-axis, and the driving component 40 is used to drive the carrier 32 to rotate relative to the base 10 around the X-axis and Y-axis directions; it should be understood that by disposing the driving component 40 on the negative side of the Z-axis of the movable component 30, and disposing the sensing magnet 51 on the X-axis or Y-axis side of the movable component 30, the sensing magnet 51 and the driving component 40 can be physically separated from the sensing magnet 51 through the structure of the movable component 30 itself, thereby minimizing the influence of the stray magnetic field generated by the driving component 40 on the magnetic field of the sensing magnet 51, so as to achieve the effect of improving the sensing accuracy.

[0037] It can be understood that if the driving component 40 is arranged on the positive side of the movable component 30 along the Z-axis, the driving component 40 will inevitably occupy the position of the incident surface of the reflective element 20, thereby causing the overall volume of the reflective module 100 to increase. In the present application, the driving component 40 is arranged on the negative side of the movable component 30 along the Z-axis, which is beneficial to reducing the overall volume of the reflective module 100, thereby reducing the overall size of the camera module.

[0038] Please refer to Figure 2 As shown, in some embodiments, the base 10 includes a fixed plate 10a, the movable component 30 includes an intermediate frame 31 and a carrier 32, the fixed plate 10a, the intermediate frame 31 and the carrier 32 are stacked along the X-axis direction, the intermediate frame 31 can rotate around the X-axis direction relative to the fixed plate 10a, and the carrier 32 can rotate around the Y-axis direction relative to the intermediate frame 31.

[0039] For details, please refer to Figure 4 The carrier 32 has an inclined loading surface 322 , and the loading surface 322 is used to fix the reflective element 20 , so that the carrier 32 carries and drives the reflective element 20 to rotate together.

[0040] That is to say, when the middle frame 31 rotates relative to the fixed plate 10a about the X-axis direction, the middle frame 31 and the carrier 32 are relatively stationary about the X-axis direction and there is no relative rotation. Therefore, the middle frame 31 will drive the carrier 32 and the reflective element 20 carried by the carrier 32 to rotate together; and when the carrier 32 carrying the reflective element 20 rotates relative to the middle frame 31 along the Y-axis direction, the middle frame 31 can be stationary relative to the fixed plate 10a and does not participate in the rotation; wherein, the rotational movement of the reflective element 20 about the X-axis direction combined with the rotational movement about the Y-axis direction can provide more comprehensive jitter compensation, thereby better compensating for image blur caused by device movement or user hand shaking.

[0041] In some embodiments, please refer to Figure 2 The base 10 is a hollow box structure opened along the positive direction of the Z axis. The fixed plate 10a is a side plate of the box structure along the negative direction of the X axis. The movable component 30 can be installed inside the base 10 through the box opening.

[0042] For the convenience of description, in this application, the rotation axis of the carrier 32 around the X-axis direction is defined as an imaginary line in the X-axis direction. Figure 5 as well as Figure 6As shown, in some embodiments, one of the intermediate frame 31 or the fixed plate 10a has a support portion 10a1 protruding along the X-axis direction to form a fulcrum on the opposite surface of the other, and an imaginary line along the X-axis direction passes through the support portion 10a1, and an auxiliary ball 311 is movably installed between the intermediate frame 31 and the fixed plate 10a to support the intermediate frame 31 to rotate around the X-axis direction with the fulcrum as the center.

[0043] That is, one of the middle frame 31 or the fixed plate 10a is provided with a support portion 10a1, and the support portion 10a1 is able to abut against the other of the middle frame 31 or the fixed plate 10a to form a fulcrum, so that the middle frame 31 can rotate relative to the fixed plate 10a around the fulcrum. It should be understood that the support portion 10a1 plays the role of a rotating shaft between the fixed plate 10a and the middle frame 31, so that the middle frame 31 can rotate relative to the fixed plate 10a around the X-axis direction.

[0044] Furthermore, the other of the fixed plate 10a and the intermediate frame 31 is provided with a rotation axis groove 315, which is used to accommodate the support portion 10a1, so as to limit the support portion 10a1, so that the intermediate frame 31 can stably rotate around the X-axis direction relative to the fixed plate 10a.

[0045] Furthermore, the fixed plate 10a is provided with a support portion 10a1 along the positive direction of the X-axis, and the intermediate frame 31 is provided with a rotating shaft groove 315 along the negative direction of the X-axis. The auxiliary ball 311 cooperates with the support portion 10a1 to provide a supporting plane for the intermediate frame 31 to stably support the movement of the intermediate frame 31.

[0046] Of course, in some other embodiments, other auxiliary support structures may also be used between the middle frame 31 and the fixed plate 10a, such as a guide rail slider along the rotation direction, etc., as long as they can support the middle frame 31 around the X-axis direction with the fulcrum of the support part 10a1 as the center. This application does not give examples one by one here.

[0047] Please combine Figure 5 as well as Figure 6 As shown, in some embodiments, the middle frame 31 is provided with a first auxiliary ball groove 313 along the negative direction of the X-axis, and the fixed plate 10a is provided with a second auxiliary ball groove 10a2 along the positive direction of the X-axis. Each auxiliary ball 311 corresponds to a first auxiliary ball groove 313 and a second auxiliary ball groove 10a2, and the auxiliary ball 311 can be movably clamped between the corresponding first auxiliary ball groove 313 and the second auxiliary ball groove 10a2 to limit the position of the auxiliary ball 311 between the middle frame 31 and the fixed plate 10a.

[0048] In some embodiments, one of the first auxiliary ball groove 313 and the second auxiliary ball groove 10a2 is a straight groove and extends along the tangent direction of a virtual circle with a point on the imaginary line in the X-axis direction as the center. That is, along the X-axis direction, the center projection of the virtual circle coincides or approaches coincidence with the center projection of the support portion 10a1.

[0049] It can be understood that the limiting relationship between the support portion 10a1 and the shaft groove 315 provides a shaft for the middle frame 31 to rotate around the X-axis direction, and the auxiliary ball 311 only plays the role of auxiliary support of the middle frame 31 on the fixed plate 10a. One of the first auxiliary ball groove 313 and the second auxiliary ball groove 10a2 is set as a linear groove to reduce the difficulty of processing, which is conducive to improving production efficiency and reducing production costs. Further, in order to reduce the resistance generated by the auxiliary ball 311, the auxiliary ball 311 is loosely accommodated in the linear groove. The auxiliary ball 311 only contacts with one point of the linear groove in the minimum state, and the auxiliary ball 311 only contacts with three points of the linear groove in the maximum state.

[0050] In a specific embodiment, the linear groove has two long groove walls and two short groove walls, the two long groove walls are arranged opposite to each other, the two short groove walls are respectively connected to the two long groove walls, and the two long groove walls are parallel to each other and extend along the tangent direction of the virtual circle. The connection between the two short groove walls and the two long groove walls can be an arc connection, that is, the linear groove is in the shape of a rounded rectangle, which is conducive to reducing the processing difficulty of the linear groove. Furthermore, the rounded rectangle can reduce the risk of the auxiliary ball 311 generating a pit when it hits the position of the connection between the short groove wall and the long groove wall.

[0051] It should be understood that the other of the first auxiliary ball groove 313 and the second auxiliary ball groove 10a2 is a cylindrical groove, a spherical groove or a square groove, so that the contact point between the auxiliary ball 311 and one of the intermediate frame 31 and the fixed plate 10a remains stable, which is beneficial to reduce the irregular movement of the auxiliary ball 311 and improve the stability of the support for the intermediate frame 31.

[0052] It is worth mentioning that the support portion 10a1 can be implemented as a main ball, that is, a main ball and at least two auxiliary balls 311 are provided between the fixed plate 10a and the intermediate frame 31 to support the intermediate frame 31 and enable the intermediate frame 31 to rotate around the X-axis direction relative to the fixed plate 10a.

[0053] In other embodiments, the number of the auxiliary balls 311 may be three or more, and correspondingly, the number of the first auxiliary ball grooves 313 and the second auxiliary ball grooves 10a2 may also be three or more, and the present application does not impose any specific limitation on this.

[0054] Furthermore, please combine Figure 6as well as Figure 7 A gasket 314 is fixedly provided on the bottom wall of the first auxiliary ball groove 313 and / or the second auxiliary ball groove 10a2. The gasket 314 is made of metal or other high-strength materials to increase the structural strength of the bottom of the ball groove to avoid the occurrence of a pit due to excessive ball pressure on the bottom of the groove during use of the reflection module 100.

[0055] For ease of description, the rotation axis of the carrier 32 along the Y-axis direction is defined as an imaginary line along the Y-axis direction in this application. Figure 3 , Figure 8 as well as Fig. 9 As shown, in some embodiments, at least two rotating balls 312 are movably installed between the middle frame 31 and the carrier 32 along the Y-axis direction to support the carrier 32 to rotate around the Y-axis direction relative to the middle frame 31. The two rotating balls 312 are passed through by an imaginary line along the Y-axis direction, so that the carrier 32 can rotate around the imaginary line passing through the two rotating balls 312.

[0056] In at least one embodiment, the imaginary line extending along the Y-axis direction passes through the two rotating balls 312 and the reflective element 20. It should be understood that the rotating balls 312 are arranged between the carrier 32 and the middle frame 31, which is conducive to reducing the friction between the carrier 32 and the middle frame 31, so that the rotation of the carrier 32 relative to the middle frame 31 around the Y-axis direction is smoother, and at the same time, it is conducive to reducing the driving force required to drive the carrier 32 to rotate, thereby improving the stability and reliability of the rotation of the carrier 32 around the Y-axis direction.

[0057] Specifically, the middle frame 31 includes a frame body 31a and two arms 31b fixed on both sides of the frame body 31a along the Y-axis direction. The carrier 32 has two grooves 323 corresponding to the two arms on the side along the negative direction of the X-axis. The two arms 31b extend into the corresponding grooves 323 along the positive direction of the X-axis to movably clamp the rotating ball 312 between the arms 31b and the bottom wall of the groove 323. It should be understood that the two arms 31b of the middle frame 31 can support the carrier 32 in the X-axis direction and improve the connection reliability between the carrier 32 and the middle frame 31.

[0058] More specifically, the arm 31b has a first rotating ball groove 31b1 on its side surface along the positive direction of the X-axis, the groove 323 has a second rotating ball groove 324 on its bottom wall along the negative direction of the X-axis, and the rotating ball 312 can be movably clamped between the first rotating ball groove 31b1 and the second rotating ball groove 324.

[0059] In some embodiments, the imaginary line along the X-axis direction may intersect with the imaginary line along the Y-axis direction, or there may be no intersection.

[0060] Please combine Figure 2 , Fig.10 as well as Fig.11 As shown, in some embodiments, the reflection module 100 includes two groups of sensing components 50, the first sensing component includes a first sensing magnet 51a arranged on the negative side of the carrier 32 along the X-axis and a first sensing element 52a arranged on the base 10, the first sensing magnet 51a and the first sensing element 52a are arranged opposite to each other, that is, the first sensing element 52a is oriented toward the intersection of the two magnetic poles of the first sensing magnet 51a, so that the first sensing element 52a can obtain the first magnetic field information of the first sensing magnet 51a, thereby obtaining the posture change information of the sensing carrier 32 around the Y-axis direction.

[0061] The second sensing component includes a second sensing magnet 51b arranged on both sides of the carrier 32 along the Y-axis direction and a second sensing element 52b arranged on the base 10. The second sensing magnet 51b and the second sensing element 52b are arranged opposite to each other, that is, the second sensing element 52b is oriented toward the intersection of the two magnetic poles of the second sensing magnet 51b, so that the second sensing element 52b can obtain the second magnetic field information of the second sensing magnet 51b, thereby obtaining the posture change information of the sensing carrier 32 around the X-axis direction.

[0062] In some embodiments, the first sensing component includes one or more first sensing magnets 51a and one or more first sensing elements 52a corresponding to the first sensing magnets 51a; the second sensing component includes one or more second sensing magnets 51b and one or more second sensing elements 52b corresponding to the second sensing magnets 51b.

[0063] Preferably, the first sensing component includes two first sensing magnets 51a and two first sensing elements 52a, and the second sensing component includes two second sensing magnets 51b and two second sensing elements 52b. It can be understood that the more sensing magnets 51 and sensing elements 52 in the sensing component 50, the higher the sensing accuracy, but it will also lead to an increase in size and equipment cost. Setting two sensing magnets 51 and two sensing elements 52 in each group of sensing components 50 can better balance the sensing accuracy and equipment cost, and reduce the overall cost of the reflection module 100 of the present application as much as possible while meeting the sensing accuracy requirements.

[0064] More preferably, when observed along the X-axis direction, the two first sensing magnets 51a are symmetrically arranged on the carrier 32 along the Z-axis direction with the imaginary line in the Y-axis direction (i.e., the rotation axis of the carrier 32 along the Y-axis direction) as the center, and specifically, the two first sensing magnets 51a are arranged on the surface of the carrier 32 along the negative direction of the X-axis; when observed along the Z-axis direction, the two second sensing magnets 51b are symmetrically arranged on the carrier 32 along the Y-axis direction with the imaginary line in the X-axis direction (i.e., the rotation axis of the carrier 32 along the X-axis direction) as the center, and specifically, the two second sensing magnets 51b are respectively arranged on the two side surfaces of the carrier 32 along the Y-axis direction; that is, two first sensing elements 52a and two second sensing elements 52b are arranged at the corresponding positions of the base 10; it can be understood that symmetrically arranging the two sensing magnets 51 in each group of sensing components 50 about the corresponding rotation axis can effectively improve the symmetry of the information obtained by the two sensing elements 52, which is conducive to improving the sensing accuracy. Further, the two first sensing magnets 51a are respectively arranged on the two side edges of the carrier 32 along the Z-axis direction. Such an arrangement can increase the distance between the two first sensing magnets 51a and the imaginary line in the Y-axis direction, thereby increasing the rotation distance of the first sensing magnet 51a relative to the first sensing element 52a at the same rotation angle, thereby enabling the first sensing element 52a to obtain a more obvious magnetic field change.

[0065] Furthermore, in some embodiments, a second magnetic magnet 61b is further provided on the side of the carrier 32 along the negative direction of the X-axis, and a second magnetic yoke 62b corresponding to the second magnetic magnet 61b is provided on the base 10. The two first sensing magnets 51a are respectively provided on the two side edges of the carrier 32 along the Z-axis direction, and the distance between the first sensing magnet 51a and the second magnetic magnet 61b can be increased, thereby reducing the interference of the second magnetic magnet 61b on the first sensing component.

[0066] In some embodiments, a magnetic conductive sheet is fixed to the surface of the sensing magnet 51 away from the corresponding sensing element 52. The magnetic conductive sheet is used for magnet assembly and can enhance the magnetic field strength on the side of the magnet away from the magnetic conductive sheet. In other words, the magnetic conductive sheet can enhance the magnetic field strength on the side of the sensing magnet 51 close to the sensing element 52, which is beneficial for the sensing element 52 to detect the magnetic field change of the sensing magnet 51 when the carrier 32 rotates, thereby achieving the effect of improving the sensing accuracy.

[0067] In some embodiments, the first sensing magnet 51 a and the second sensing magnet 51 b may be monopolar magnets or multipolar magnets, as long as the two magnetic poles of the sensing magnet 51 facing the corresponding sensing element 52 are distributed along the Z-axis direction.

[0068] In some embodiments, the intersection of the two magnetic poles of the sensing magnet 51 facing the corresponding sensing element 52 is a non-magnetic area. It should be understood that in this case, the two magnetic poles of the sensing magnet 51 facing the corresponding sensing element 52 can also be considered to be distributed along the Z-axis direction.

[0069] Please combine Figure 3 as well as Figure 8 As shown, in some embodiments, the carrier 32 has a magnet mounting portion 321 protruding along the negative direction of the X-axis and penetrating the middle frame 31, and the first sensing magnet 51a is embedded in the side surface of the magnet mounting portion 321 along the negative direction of the X-axis, so that the first sensing magnet 51a can be closer to the first sensing element 52a, thereby improving the sensing accuracy of the first sensing element 52a.

[0070] It should be understood that in the present application, "embedded" includes at least two situations: component A is integrally formed with component B and component A is fixed in a pre-formed groove of component B by snapping, gluing or other means.

[0071] In some embodiments, the reflection module 100 further includes a first magnetic attraction component and a second magnetic attraction component. Figure 6 as well as Fig.12 As shown, the first magnetic attraction component includes a first magnetic attraction magnet 61a and a first magnetic yoke 62a which are arranged opposite to each other along the X-axis direction, one of which is fixed to the carrier 32 and the other is fixed to the middle frame 31; Figure 8 as well as Fig. 9 As shown, the second magnetic attraction component includes a second magnetic attraction magnet 61b and a second magnetic yoke 62b which are arranged opposite to each other along the X-axis direction, one of which is fixed to the middle frame 31, and the other is fixed to the fixing plate 10a.

[0072] A magnetic attraction force along the X-axis direction is generated between the first magnetic attraction magnet 61a and the first magnetic yoke 62a, and the carrier 32 is supported on the middle frame 31 under the action of the magnetic attraction force. A magnetic attraction force along the X-axis direction is generated between the second magnetic attraction magnet 61b and the second magnetic yoke 62b, and the middle frame 31 is supported on the fixed plate 10a under the action of the magnetic attraction force.

[0073] It can be understood that the magnetic attraction force is also conducive to clamping the auxiliary ball 311 between the fixed plate 10a and the middle frame 31, and is conducive to clamping the rotating ball 312 between the middle frame 31 and the carrier 32, and when the camera module is subjected to external force, it is conducive to improving the reliability of the attachment between the carrier 32, the middle frame 31 and the fixed plate 10a, and reducing the risk of separation between the carrier 32, the middle frame 31 and the fixed plate 10a.

[0074] It is worth mentioning that the projections of the first magnetic component and the second magnetic component along the X-axis direction do not overlap, that is, when observed along the X-axis direction, the first magnetic component and the second magnetic component do not overlap, the first magnetic component and the second magnetic component are relatively independent, and there is no common magnetic magnet or yoke between the two, so that the magnitude and position of the magnetic attraction force between the carrier 32 and the middle frame 31 can be independently controlled by the first magnetic component, and the magnitude and position of the magnetic attraction force between the middle frame 31 and the base 10 can be independently controlled by the second magnetic component, which is conducive to optimizing the performance of two different rotation directions respectively. It should be understood that the projections of the first magnetic component and the second magnetic component along the X-axis direction do not overlap means that the projections of the parts of the first magnetic component and the second magnetic component that provide magnetic attraction functions do not overlap.

[0075] Please combine Figure 6 as well as Fig. 9 As shown, in some embodiments, the first magnetic yoke 62a and the second magnetic yoke 62b are both fixed to the middle frame 31. It can be understood that the thickness of the magnetic yoke is smaller than that of the magnet, and setting the first magnetic yoke 62a and the second magnetic yoke 62b on the middle frame 31 can effectively reduce the thickness of the middle frame 31, thereby improving the overall compactness of the reflection module 100.

[0076] That is to say, compared with setting the yoke on the fixed plate 10a or the carrier 32, the size of the fixed plate 10a or the carrier 32 is greatly constrained by other components. Even if a yoke with a smaller thickness is set on both, the volume of both cannot be reduced. On the contrary, the structure of the intermediate frame 31 is simple and carries fewer components. Choosing to set the yoke on the intermediate frame 31 can effectively avoid increasing the size of the intermediate frame 31.

[0077] In addition, since the intermediate frame 31 is of a smaller size, its own structural strength is relatively low. After the first magnetic yoke 62a and the second magnetic yoke 62b are fixed to the intermediate frame 31, the metal magnetic yoke can also play a role in structural reinforcement, thereby helping to increase the structural strength of the intermediate frame 31 without the need for additional separate structural reinforcement components.

[0078] Of course, the first magnetic yoke 62a and the second magnetic yoke 62b may also be made of other materials as long as they can be magnetically attracted by a magnet.

[0079] For further information, please refer to Fig.10 as well as Fig.12 The carrier 32 has a first magnetic magnet groove 325 on the side along the negative direction of the X-axis, and the first magnetic magnet 61a is embedded in the first magnetic magnet groove 325; the fixed plate 10a has a second magnetic magnet groove 10a3 on the side along the negative direction of the X-axis, and the second magnetic magnet 61b is embedded in the second magnetic magnet groove 10a3.

[0080] In some embodiments, the first yoke 62a and the second yoke 62b are respectively arranged on both sides of the middle frame 31 along the X-axis direction to reduce the distance between the yoke and the corresponding magnetic magnet, thereby optimizing the magnetic attraction effect. Further, the first yoke 62a and the second yoke 62b are exposed on both side surfaces of the middle frame 31 along the X-axis direction. Furthermore, there is no overlap in the projections of the first yoke 62a and the second yoke 62b along the Y-axis direction. When observed along the Y-axis direction, there is a gap between the first yoke 62a and the second yoke 62b in the X-axis direction.

[0081] Please refer to Fig.13 As shown, in some embodiments, the first magnetic attraction component is located on the positive direction side of the rotating ball 312 along the Z axis. In other words, when viewed along the X axis, the first magnetic attraction component is located on the positive direction side of the rotating ball 312 along the Z axis, and in particular, the center of the first magnetic attraction magnet 61a of the first magnetic attraction component is located on the positive direction side of the center of the rotating ball 312 along the Z axis.

[0082] Understandable, reference Fig.13 , the carrier 32 rotates relative to the middle frame 31 around the Y-axis imaginary line, and a magnetic attraction force is generated between the driving magnet and the first magnetic yoke 62a along the direction of the line connecting the two. Since the driving magnet is located on the negative side of the movable component 30 along the Z-axis, under the action of the magnetic attraction force, the driving magnet has a tendency to approach the first magnetic yoke 62a, thereby making the driving magnet have a tendency to approach the first magnetic yoke 62a around the Y-axis imaginary line (i.e. Fig.13 As a result, the carrier 32 cannot be stabilized at the zero position relative to the middle frame 31 (that is, the position where the carrier 32 is centered relative to the middle frame 31), thereby affecting the anti-shake effect.

[0083] In this regard, the present application arranges the first magnetic attraction component on the positive direction side of the rotating ball 312 along the Z axis, that is, referring to Fig.13 , the first magnetic attraction component is arranged on the upper side of the Y-axis imaginary line, so that the magnetic attraction force between the first magnetic attraction magnet 61a and the first magnetic yoke 62a is located on the upper side of the Y-axis imaginary line. Therefore, under the action of the magnetic attraction force, with the Y-axis imaginary line as the rotation center, the first magnetic attraction magnet 61a has Fig.13 The counterclockwise rotation tendency at an angle is used to offset the magnetic attraction between the first yoke 62a and the driving magnet, thereby reducing the influence of unnecessary magnetic attraction between the driving magnet and the first yoke 62a, and making the resultant magnetic attraction between the carrier 32 and the intermediate frame 31 parallel to the X-axis direction as much as possible, thereby making the torque of the carrier 32 at the zero position as balanced as possible.

[0084] Furthermore, during the rotation of the carrier 32 relative to the base 10, along the X-axis direction, the projection of the first magnetic attraction magnet 61a always falls completely within the projection of the first magnetic yoke 62a, so that in the working state, the magnetic attraction force between the first magnetic attraction magnet 61a and the first magnetic yoke 62a can be as parallel to the X-axis as possible.

[0085] In some embodiments, the first magnetic attraction component is located between the two rotating balls 312 along the Y-axis direction to reduce the possibility of overturning due to the increase in the distance between the carrier 32 and the middle frame 31 on any side along the Y-axis direction.

[0086] Preferably, the first magnetic attraction component is located in the middle position of the two rotating balls 312 along the Y-axis direction, so that the magnetic attraction force on the carrier 32 toward the middle frame 31 is relatively balanced along the Y-axis direction. In other words, the possibility of overturning of the carrier 32 on any side along the Y-axis direction due to uneven force can be further reduced.

[0087] Please combine Figure 5 as well as Fig.14 As shown, in some embodiments, at least two auxiliary balls 311 are movably installed between the middle frame 31 and the fixed plate 10a, and the support portion 10a1 at least partially deviates from the line connecting two of the auxiliary balls 311 to form a support surface between the support portion 10a1 and each auxiliary ball 311; the second magnetic attraction component includes two second magnetic attraction magnets 61b, and the projection of the midpoints of the two second magnetic attraction magnets 61b along the X-axis direction is located within the support surface.

[0088] Specifically, the support portion 10a1 at least partially deviates from the line connecting two of the auxiliary balls 311, so that the fulcrum of the support portion 10a1 and the fulcrums of the two auxiliary balls 311 are not colinear and form a support surface, which is conducive to more stably supporting the middle frame 31. It can be understood that the fulcrum of the two auxiliary balls 311 refers to the contact point between the auxiliary ball 311 and the middle frame 31 when the auxiliary ball 311 is centered in the auxiliary ball groove, or the midpoint of the auxiliary ball 311 is used as the fulcrum.

[0089] More specifically, by limiting the projection of the midpoint of the line connecting the two second magnetic magnets 61b along the X-axis direction to fall within the support surface, it is possible to effectively avoid uneven magnetic attraction between the second magnetic magnets 61b and the corresponding second magnetic yokes 62b, thereby preventing the middle frame 31 from tipping over relative to the fixed plate 10a and improving the attachment reliability between the middle frame 31 and the fixed plate 10a.

[0090] Preferably, the magnetic forces of the two second magnetic magnets 61b are the same, and the midpoint of the line connecting the two second magnetic magnets 61b is equidistant from the two auxiliary balls 311, so as to improve the stability of the magnetic attraction of the middle frame 31 and the fixed plate 10a; more preferably, the distance between the line connecting the two second magnetic magnets 61b and the support portion 10a1 is greater than the distance between the line connecting the centers of the two auxiliary ball grooves, so that the distances from the magnetic attraction force to the three sides of the support surface are closer, thereby further improving the stability.

[0091] In some embodiments, the two auxiliary balls 311 are arranged along the Y-axis direction, the support portion 10a1 is located on the positive side of the two auxiliary balls 311 along the Z-axis, and the three fulcrums of the support portion 10a1 and the two auxiliary balls 311 form an isosceles triangle with the fulcrum of the support portion 10a1 as the vertex. In other words, the second magnetic magnet 61b is located between the support portion 10a1 and the two auxiliary balls 311 along the Z-axis direction, and the distance from the center of the support portion 10a1 to the center of the two auxiliary balls 311 is equal, which is conducive to making the supporting force provided by the support portion 10a1 and the auxiliary balls 311 more evenly distributed on the movable component 30, so as to improve the stability and reliability of the movable component 30 when rotating around the X-axis direction, reduce the risk of the middle frame 31 being skewed due to uneven force, and thus help to improve the controllability of the reflection module 100 and improve the imaging quality of the camera module.

[0092] Of course, in some other embodiments, the second magnetic attraction component may also include other numbers of second magnetic attraction magnets 61b, as long as the projection of the equivalent force point of the total magnetic attraction force generated between each second magnetic attraction magnet 61b and each second magnetic yoke 62b along the X-axis direction is located within the above-mentioned support surface.

[0093] Please combine Figure 2 , Fig.10 as well as Fig.11 As shown, in some embodiments, the sensing magnet 51 is fixed to the movable component 30, and the sensing element 52 is relatively fixed to the base 10. It can be understood that since the movable component 30 can rotate relative to the base 10, setting the sensing element 52 on the movable component 30 will make the line connection difficult. Therefore, in the present application, the sensing magnet 51 is fixed to the movable component 30, and the sensing element 52 is relatively fixed to the base 10, which can effectively simplify the difficulty of line connection, so that the structure of the reflection module of the present application is more compact.

[0094] Of course, according to actual needs, in some other embodiments, the sensing magnet 51 may also be disposed on the base 10 , and the sensing element 52 may also be disposed on the movable component 30 .

[0095] Please combine Fig.11 as well as Fig.12As shown, in some embodiments, a circuit board slot 11 is provided on the outer wall of the base 10, a circuit board 70 is embedded in the circuit board slot 11, the sensing element 52 is electrically connected to the circuit board 70, and a sensing through slot 111 corresponding to the sensing element 52 is provided on the bottom wall of the circuit board slot 11. It can be understood that embedding the circuit board 70 in the circuit board slot 11 on the outer wall of the base 10 can reduce space occupation, making the structure of the reflection module more compact, and on the other hand, compared with grooving the inner wall of the base 10, the processing difficulty of the outer wall grooving is lower and the installation of the circuit board 70 is more convenient; in addition, the sensing element 52 is directly opposite to the sensing magnet 51 through the sensing through slot 111, which can reduce the distance between the two, thereby achieving the effect of improving the sensing accuracy.

[0096] Please combine Figure 5 , Fig.10 as well as Fig.15 As shown, in some embodiments, the circuit board 70 includes a circuit bottom plate 71 located on the negative side of the base 10 along the Z axis, and the bottom wall of the circuit board slot 11 corresponding to the circuit bottom plate 71 is provided with a coil through slot 112, and the driving component 40 includes a driving magnet 41 and a driving coil 42 arranged relatively along the Z axis, the driving coil 42 is electrically connected to the circuit bottom plate 71 and embedded in the coil through slot 112, and the driving magnet 41 is fixed to the side of the movable component 30 along the negative direction of the Z axis. It can be understood that embedding the driving coil 42 in the coil through slot 112 is conducive to reducing the overall volume of the reflection module 100, and can also reduce the distance between the driving coil 42 and the driving magnet 41, so as to achieve the effect of improving the driving force of the driving component 40.

[0097] In some embodiments, the driving assembly 40 includes a first driving assembly and a second driving assembly. The first driving assembly includes a first driving magnet 41a and a first driving coil 42a. The first driving coil 42a is used to drive the first driving magnet 41a to rotate around the Y axis after being energized. That is, the first driving magnet 41a can drive the carrier 32 and the reflective element 20 to rotate around the Y axis. The second driving component includes a second driving magnet 41b and a second driving coil 42b. The second driving coil 42b is used to drive the second driving magnet 41b to rotate around the X-axis after being energized. That is, the second driving magnet 41b can drive the carrier 32, the reflective element 20 and the intermediate frame 31 to rotate synchronously around the X-axis.

[0098] In some embodiments, the first driving magnet 41 a has two magnetic poles near the side of the first driving coil 42 a , and the two magnetic poles are distributed along the X-axis direction.

[0099] Preferably, the long sides of the two magnetic poles of the first driving magnet 41a and the long sides of the first driving coil 42a are parallel to the Y-axis direction to increase the force arm of the driving force, which is beneficial to improving the driving effect of the first driving component.

[0100] In a specific embodiment, there is a non-magnetic region between the two magnetic poles of the first driving magnet 41 a.

[0101] In some embodiments, the second driving component includes two second driving magnets 41b, which are symmetrically arranged on both sides of the first driving magnet 41a along the Y-axis direction with the X-axis imaginary line as the center. The second driving magnet 41b has only one magnetic pole close to the side of the corresponding second driving coil 42b.

[0102] Specifically, when the current directions of the two second drive coils 42b are the same, the magnetic poles of the two second drive magnets 41b close to the corresponding sides of the second drive coils 42b are opposite; conversely, when the current directions of the two second drive coils 42b are opposite, the magnetic poles of the two second drive magnets 41b close to the corresponding sides of the second drive coil 42b are the same.

[0103] Preferably, the long sides of the two second driving magnets 41b and the corresponding second driving coils 42b are parallel to the X-axis direction to increase the lever arm of the driving force, which is beneficial to improving the driving effect of the second driving component. More preferably, the two second driving magnets 41b are arranged on the two side edges of the movable component 30 along the Y-axis direction to increase the lever arm length of the driving force as much as possible, thereby improving the driving effect of the second driving component.

[0104] In some embodiments, a driving magnet slot 326 is formed on the negative side of the carrier 32 along the Z-axis, and the driving magnet 41 is embedded in the driving magnet slot 326 to reduce the volume occupied.

[0105] Furthermore, the carrier 32 is provided with a plurality of driving magnet grooves 326 along the negative direction of the Z axis, and the second driving magnet 41b and the first driving magnet 41a are both embedded in independent driving magnet grooves 326. In other words, the second driving magnet 41b and the first driving magnet 41a are spaced apart from each other.

[0106] Please combine Fig.11 , Fig.12 as well as Fig.17As shown, in some embodiments, the circuit board 70 also includes two circuit side plates 72 and a circuit back plate 73. The two circuit side plates 72 are located on both sides of the base 10 along the Y-axis direction and are fixed to the circuit bottom plate 71. The circuit back plate 73 is located on the negative side of the base 10 along the X-axis and is fixed to the circuit bottom plate 71. The first sensing element 52a is fixed to the positive side of the circuit back plate 73 along the X-axis, and the second sensing element 52b is fixed to the side of the circuit side plate 72 close to the base 10. The first sensing element 52a and the second sensing element 52b are opposite to the corresponding sensing magnets 51 through the corresponding sensing slots 111.

[0107] Specifically, a driving control chip 721 is provided on one of the circuit side panels 72 near the base 10 . The driving control chip 721 is used to control the reflection module 100 and the lens module 200 , thereby realizing anti-shake and focus (zoom) control. Setting the driving control chip 721 on the circuit side panel 72 helps to reduce the concentration of electronic components and facilitates the assembly of the driving component 40 .

[0108] Preferably, the circuit side plate 72 provided with the driving control chip 721 is also provided with a structural reinforcement sheet corresponding to the driving control chip 721 on the side away from the base 10 to improve the installation stability of the driving control chip 721 .

[0109] More specifically, the two circuit side plates 72 are provided with electrical lead-out portions 74 along the positive direction of the X-axis, and the circuit board 70 is electrically connected to the imaging module 300 via the electrical lead-out portions 74 .

[0110] Please refer to Figure 2 In some embodiments, the reflective element 20 is implemented as a prism having an incident surface, a reflective surface, and an exit surface.

[0111] Specifically, the reflecting surface is a plane inclined at 45°, the incident surface is a convex surface protruding toward the incident direction (can be a spherical surface, an aspherical surface, or a free-form surface), and the exit surface is a concave surface concave away from the exit direction (can be a spherical surface, an aspherical surface, or a free-form surface). In short, the reflecting element can be a surface prism with a curved surface. In other embodiments, the reflecting element can also be implemented as a reflector or an ordinary prism without a curved surface.

[0112] Please combine Figure 1 as well as Fig.16As shown, the camera module also includes a buffer module 80, and the buffer module 80 includes a first buffer member 81. The first buffer member 81 is located between the fixed plate 10a and the movable component 30 along the X-axis direction, and is arranged on at least one of the fixed plate 10a and the movable component 30, so that when the movable component 30 rotates around the Y-axis imaginary line relative to the base, the first buffer member 81 first contacts the movable component 30 or the fixed plate 10a, and then plays a buffering role to avoid the collision of the movable component 30 with the fixed plate 10a, which is beneficial to protecting the movable component 30 and the fixed plate 10a, so as to reduce the risk of damage to both and extend the service life of the camera module; in addition, the first buffer member 81 is spaced between the movable component 30 and the fixed plate 10a, which can also reduce the impact noise between the two and improve the user experience.

[0113] In some embodiments, the buffer module 80 also includes a second buffer member 82, which is located between the movable component 30 and the inner wall of the base 10 along the Y-axis direction, and is arranged on at least one of the fixed plate 10a and the movable component 30, and is used to prevent the two from being damaged by collision and reduce the impact noise between the two when the movable component 30 rotates around the imaginary line of the X-axis relative to the base 10.

[0114] In some embodiments, the buffer module 80 also includes a third buffer member 83, which is located between the reflection module 100 and the lens module 200 along the X-axis direction, and is provided on at least one of the base 10 and the movable component 30 to prevent the two from being damaged by collision and reduce the collision noise between the two when the movable component 30 rotates around the Y-axis imaginary line relative to the base.

[0115] In some embodiments, the buffer module 80 also includes a fourth buffer member 84, which is located between the reflection module 100 and the lens module 200 along the X-axis direction, and is disposed on at least one of the base 10 and the lens module 200, and is used to prevent the two from being damaged by collision and reduce the impact noise between the two when the lens module 200 moves relative to the base along the X-axis direction.

[0116] Preferably, a cavity is provided in the fourth buffer 84 to improve the buffering effect. More preferably, the cross section of the fourth buffer 84 along the XOZ plane is D-shaped, the arc surface of the D-shaped faces the lens module 200, the cavity in the fourth buffer 84 passes through the fourth buffer 84 along the Y-axis direction, and the cavity is formed in the same shape as the outer contour of the fourth buffer 84, that is, the cross section of the fourth buffer 84 along the XOZ plane is also D-shaped.

[0117] In some implementations, the fourth buffer component 84 and the third buffer component 83 are integrally formed.

[0118] In some embodiments, the buffer module 80 also includes a fixed frame 85, which is fixed to the top of the base 10 and is U-shaped with its opening facing the positive direction of the X-axis. The first buffer component 81, the second buffer component 82, the third buffer component 83 and the fourth buffer component 84 are all fixed to the fixed frame 85.

[0119] In some embodiments, two first buffer members 81 , second buffer members 82 , third buffer members 83 and fourth buffer members 84 are symmetrically arranged along the Y-axis direction with the X-axis imaginary line as the center.

[0120] Please combine Figure 1 as well as Fig.17 As shown, the second aspect of the present application provides a camera module, including: the above-mentioned reflection module 100; the reflection element 20, the reflection element 20 is installed on the reflection module 100; the lens module 200, the lens module 200 is arranged in the base 10 and is held on the light reflection path of the reflection element 20; the imaging module 300, the imaging module 300 is arranged on the light emitting side of the base 10 and receives the light emitted by the lens module 200 for imaging; the shell 400, the shell 400 is covered on the base 10.

[0121] Specifically, the lens module 200 can move along the X-axis direction to achieve focusing (zooming); the imaging module 300 includes a chip circuit board and a photosensitive chip electrically connected to the chip circuit board. The photosensitive chip is electrically connected to the mobile electronic device through the chip circuit board. The photosensitive chip receives the light emitted by the optical lens for imaging, thereby acquiring an image.

[0122] More specifically, the imaging module 300 includes a photosensitive component 310 and a filter component 320. The photosensitive component 310 includes a photosensitive circuit board 310b, a photosensitive chip 310a mounted on the photosensitive circuit board 310b, and electronic components (not shown in the figure). The photosensitive chip 310a is fixed to the photosensitive circuit board 310b by, for example, bonding, and is electrically connected to the photosensitive circuit board 310b by, for example, wire bonding, so that the photosensitive chip 310a receives light for imaging and is electrically connected to the mobile electronic device through the photosensitive circuit board 310b. The filter component 320 includes a filter bracket 320b and a filter element 320a mounted on the filter bracket 320b. The filter bracket 320b is fixed to the photosensitive circuit board 310b by, for example, bonding, and the filter element 320a is fixed to the filter bracket 320b by, for example, bonding so as to be maintained on the photosensitive path of the photosensitive chip 310a. The filter element 320a filters the light entering the photosensitive chip 310a.

[0123] In some other embodiments, the reflection module 100 and the lens module 200 may also be disposed on respective independent bases 10 and fixed to each other.

[0124] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0125] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A reflection module, characterized in that: include: A base (10) having an internal space; A movable component (30) is used to carry a reflective element (20), wherein the reflective element (20) is used to reflect light incident along the Z-axis direction to the X-axis direction, the Y-axis direction being perpendicular to the X-axis direction and the Z-axis direction, and the movable component (30) is rotatably disposed in the base (10) around the X-axis direction and the Y-axis direction; Two groups of sensing components (50) are respectively used to sense the rotational travel of the movable component (30) around the X-axis direction and the Y-axis direction. Each group of the sensing components (50) comprises a sensing magnet (51) and a sensing element (52) which are arranged opposite to each other, one of which is arranged on the movable component (30) and the other is arranged on the base (10). The sensing magnet (51) is arranged on the radial side of the rotation axis of the movable component (30) along the X-axis or Y-axis direction, and the two magnetic poles of each sensing magnet (51) facing the corresponding sensing element (52) are arranged along the Z-axis direction.

2. The reflection module according to claim 1, characterized in that: The sensing magnet (51) is fixed to the movable component (30), and the sensing element (52) is relatively fixed to the base (10).

3. The reflection module according to claim 2, characterized in that: The base (10) comprises a fixed plate (10a), and the movable component (30) comprises an intermediate frame (31) and a carrier (32); the fixed plate (10a), the intermediate frame (31) and the carrier (32) are stacked along the X-axis direction; the intermediate frame (31) can rotate around the X-axis direction relative to the fixed plate (10a), and the carrier (32) can rotate around the Y-axis direction relative to the intermediate frame (31).

4. The reflection module according to claim 3, characterized in that: The reflection module (100) further comprises two groups of driving components (40) arranged on the negative Z-axis side of the movable component (30), each group of the driving components (40) comprising a driving magnet (41) and a driving coil (42) arranged opposite to each other along the Z-axis direction, one of the driving magnet (41) and the corresponding driving coil (42) being arranged on the movable component (30), and the other being arranged on the base (10); The first driving assembly is used to drive the carrier (32) to rotate relative to the intermediate frame (31) around the Y-axis direction, and the second driving assembly is used to drive the intermediate frame (31) to rotate relative to the fixed plate (10a) around the X-axis direction.

5. The reflection module according to claim 4, characterized in that: The first driving component comprises a first driving magnet (41a) and a first driving coil (42a); the first driving magnet (41a) has two magnetic poles distributed along the X-axis direction on a side close to the first driving coil (42a); The second driving component comprises two second driving magnets (41b) and two second driving coils (42b), wherein the two second driving magnets (41b) are arranged on both sides of the first driving magnet (41a) along the Y-axis direction, and the second driving magnet (41b) has only one magnetic pole close to the side surface corresponding to the second driving coil (42b).

6. The reflection module according to claim 3, characterized in that: The reflection module (100) further comprises a first magnetic attraction component and a second magnetic attraction component, wherein the first magnetic attraction component comprises a first magnetic attraction magnet (61a) and a first magnetic yoke (62a) which are arranged opposite to each other along the X-axis direction, one of which is fixed to the carrier (32) and the other is fixed to the middle frame (31); and the second magnetic attraction component comprises a second magnetic attraction magnet (61b) and a second magnetic yoke (62b) which are arranged opposite to each other along the X-axis direction, one of which is fixed to the middle frame (31) and the other is fixed to the fixed plate (10a).

7. The reflection module according to claim 6, characterized in that: The first magnetic yoke (62a) and the second magnetic yoke (62b) are both fixedly mounted on the middle frame (31).

8. The reflection module according to claim 7, characterized in that: The first magnetic attraction component is located on the positive Z-axis direction side of the carrier (32) along the Y-axis rotation axis.

9. The reflection module according to claim 6, characterized in that: The reflection module (100) comprises two groups of sensing components (50), wherein the first sensing component is used for sensing the rotational travel of the carrier (32) around the Y-axis direction, and comprises a first sensing magnet (51a) arranged on the negative side of the carrier (32) along the X-axis, and a first sensing element (52a) arranged relative to the base (10); and the second sensing component is used for sensing the rotational travel of the carrier (32) around the X-axis direction, and comprises a second sensing magnet (51b) arranged on both sides of the carrier (32) along the Y-axis direction, and a second sensing element (52b) arranged relative to the base (10).

10. The reflection module according to claim 9, characterized in that: The carrier (32) has a magnet mounting portion (321) protruding along the negative direction of the X-axis and penetrating the middle frame (31), and the first sensing magnet (51a) is embedded in the side surface of the magnet mounting portion (321) along the negative direction of the X-axis.

11. The reflection module according to claim 9, characterized in that: One of the intermediate frame (31) or the fixed plate (10a) has a support portion (10a1) protruding in the X-axis direction to form a fulcrum on the opposite surface of the other, and an auxiliary ball (311) is movably installed between the intermediate frame (31) and the fixed plate (10a) to support the intermediate frame (31) to rotate around the X-axis direction with the fulcrum as the center; At least two rotating balls (312) are movably mounted between the intermediate frame (31) and the carrier (32) along the Y-axis direction, so as to support the carrier (32) to rotate relative to the intermediate frame (31) around the Y-axis direction; The intermediate frame (31) is provided with a first auxiliary ball groove (313) along the negative direction of the X-axis, the fixed plate (10a) is provided with a second auxiliary ball groove (10a2) along the positive direction of the X-axis, and the auxiliary ball (311) can be movably clamped between the first auxiliary ball groove (313) and the second auxiliary ball groove (10a2); a gasket (314) is fixed to the bottom wall of the first auxiliary ball groove (313).

12. The reflection module according to claim 11, characterized in that: At least two auxiliary balls (311) are movably mounted between the middle frame (31) and the fixed plate (10a), and the support portion (10a1) at least partially deviates from a line connecting two of the auxiliary balls (311) so as to form a support surface between the support portion (10a1) and each of the auxiliary balls (311); The second magnetic attraction component comprises two second magnetic attraction magnets (61b), and the projections of the midpoints of the two second magnetic attraction magnets (61b) along the X-axis direction are located within the support surface.

13. The reflection module according to claim 5, characterized in that: The outer wall of the base (10) is provided with a circuit board slot (11), a circuit board (70) is embedded in the circuit board slot (11), the sensing element (52) is electrically connected to the circuit board (70), and the bottom wall of the circuit board slot (11) is provided with a sensing through slot (111) corresponding one-to-one to the sensing element (52).

14. The reflection module according to claim 13, characterized in that: The circuit board (70) comprises a circuit bottom plate (71) located on the negative Z-axis side of the base (10); a coil through slot (112) is provided through the bottom wall of the circuit board slot (11) corresponding to the circuit bottom plate (71); the driving component (40) comprises a driving magnet (41) and a driving coil (42) arranged relatively to each other along the Z-axis direction; the driving coil (42) is electrically connected to the circuit bottom plate (71) and embedded in the coil through slot (112); and the driving magnet (41) is fixed to the side of the movable component (30) along the negative Z-axis direction.

15. A camera module, characterized in that: include: The reflection module (100) according to any one of claims 1 to 14; A reflective element (20), the reflective element (20) being mounted on the reflective module (100); A lens module (200), the lens module (200) being arranged in the base (10) and being held on a light reflection path of the reflection element (20); An imaging module (300), the imaging module (300) being arranged on the light-emitting side of the base (10) and receiving the light emitted by the lens module (200) to perform imaging; A shell (400), wherein the shell (400) is covered on the base (10).

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