Reflection module and camera module

Abstract

The present application relates to a kind of reflection module and camera module.The reflection module includes: base, with internal space;Active component, for carrying reflective element, reflective element is used to reflect the light along Z axis direction to X axis direction, Y axis direction is perpendicular to X axis direction and Z axis direction, active component is rotatably arranged in base around X axis direction and Y axis direction;Two groups of sensing components are respectively used to sense the rotation stroke of active component around X axis direction and Y axis direction, each group of sensing components includes oppositely arranged sensing magnet and sensing element, one of which is arranged in active component, another is arranged in base, sensing magnet is arranged in the radial side of the rotation axis of active component along X axis or Y axis direction, the two magnetic poles of each sensing magnet facing corresponding sensing element are all arranged along Z axis direction, so that the magnetic field variation of sensing magnet during rotation is more obvious, to effectively improve the sensing accuracy of sensing element.

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 popularity of mobile electronic devices, the technology related to camera modules used in mobile electronic devices to help users capture images has been rapidly developed and advanced. Currently, in the market, consumers have an increasing demand for camera modules configured in mobile electronic devices.

[0003] Currently, a driving device and a sensing device are usually set up in the camera module to realize the optical image stabilization function. 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 changes 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] This application first provides a reflection module, including:

[0007] a base having an interior space;

[0008] a movable assembly for carrying a reflective element, wherein the reflective element 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 assembly is rotatably disposed in the base around the X-axis direction and the Y-axis direction;

[0009] Two groups of sensing components are respectively used to sense the rotational travel of the movable component around the X-axis and the Y-axis. 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 magnets are 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 both arranged along the Z-axis direction.

[0010] In one embodiment, the sensing magnet is fixed to the movable component, and the sensing element is fixed relative to the base.

[0011] 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.

[0012] In one embodiment, the reflection module further includes two sets of driving components disposed on the negative side of the movable component along the Z-axis, each set of the driving components including a driving magnet and a driving coil disposed opposite to each other along the Z-axis, one of the driving magnet and the corresponding driving coil being disposed on the movable component, and the other being disposed on the base;

[0013] 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.

[0014] 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 near the side of the first driving coil;

[0015] The second driving assembly 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.

[0016] 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 intermediate 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 intermediate frame and the other is fixed to the fixed plate.

[0017] In one embodiment, the first magnetic yoke and the second magnetic yoke are both fixed to the middle frame.

[0018] In one embodiment, the first magnetic attraction component is located on the positive Z-axis side of the carrier's rotation axis 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 rotational travel of the carrier around the Y-axis, and includes a first sensing magnet disposed on the negative X-axis side of the carrier and a first sensing element disposed opposite to the base. The second sensing component is used to sense the rotational travel of the carrier around the X-axis, and includes second sensing magnets disposed on both sides of the carrier along the Y-axis and a second sensing element disposed opposite to the base.

[0019] In one embodiment, 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.

[0020] 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;

[0021] 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.

[0022] In one embodiment, the intermediate 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. The auxiliary balls 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.

[0023] 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.

[0024] In one embodiment, at least two auxiliary balls are movably mounted between the intermediate frame and the fixed plate, and the support portion is at least partially offset from a line connecting two of the auxiliary balls to form a support surface between the support portion and each of the auxiliary balls.

[0025] 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.

[0026] 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 groove corresponding to the sensing element is formed on the bottom wall of the circuit board groove.

[0027] 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-slot is provided through the bottom wall of the circuit board slot corresponding to the circuit bottom plate. The driving component includes a driving magnet and a driving coil relatively arranged along the Z-axis direction. The driving coil is electrically connected to the circuit bottom plate and embedded in the coil through-slot, and the driving magnet is fixed to the side of the movable component along the negative direction of the Z-axis.

[0028] 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, wherein the shell cover is arranged on the base.

[0029] The above-mentioned reflection module, by arranging the driving component on the negative Z-axis side of the movable component and arranging 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, thereby achieving the effect of improving the sensing accuracy; in addition, by arranging the sensing magnet on the radial side of the rotation direction of the movable component and arranging the two magnetic poles facing the sensing element along the Z-axis direction, the magnetic field change of the sensing magnet during rotation is made more obvious, thereby effectively improving the sensing accuracy of the sensing element. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a three-dimensional image of the camera module of this application after the shell is hidden;

[0031] Figure 2 This is an exploded view of the reflection module of this application;

[0032] Figure 3 A three-dimensional diagram of the movable components in the reflection module of this application;

[0033] Figure 4 for Figure 2 A three-dimensional image of the middle carrier at another angle;

[0034] Figure 5 for Figure 2 A three-dimensional view of the middle shell at another angle;

[0035] Figure 6 for Figure 2 A magnified view of the middle frame in ;

[0036] Figure 7 for Figure 6 Exploded view of the middle frame;

[0037] Figure 8 for Figure 2 Magnified image of the medium carrier;

[0038] Figure 9 for Figure 6 A three-dimensional image of the middle frame at another angle;

[0039] Figure 10 for Figure 8 Exploded view of the carrier;

[0040] Figure 11 for Figure 2 A three-dimensional image of the circuit board at another angle;

[0041] Figure 12 for Figure 2 Exploded view of the middle shell;

[0042] Figure 13 for Figure 3 Schematic diagram of the active module along the Y-axis direction;

[0043] Figure 14 for Figure 3 Schematic diagram of the active module along the positive direction of the X axis;

[0044] Figure 15 for Figure 3 A three-dimensional diagram of the active module from an upward perspective;

[0045] Figure 16 for Figure 1 Exploded diagram of the buffer module and reflector module;

[0046] Figure 17 This is a cross-sectional view of the camera module of this application.

[0047] 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;

[0048] 10. Base; 10a. Fixed plate; 10a1. Support portion; 10a2. Second auxiliary ball groove; 10a3. Second magnetic magnet groove; 11. Circuit board groove; 111. Sensing groove; 112. Coil groove; 20. Reflective 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 portion; 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 , first driving magnet; 41b, second driving magnet; 42, driving coil; 42a, first driving coil; 42b, second driving coil; 50, sensing component; 51, sensing magnet; 51a, first sensing magnet; 51b, second sensing magnet; 52, sensing element; 52a, first sensing element; 52b, second sensing element; 61a, first magnetic attraction magnet; 61b, second magnetic attraction magnet; 62a, first magnetic yoke; 62b, second magnetic yoke; 70, circuit board; 71, circuit bottom plate; 72, circuit side plate; 721, driving control chip; 73, circuit back plate; 74, electrical conduction part; 80, buffer module; 81, first buffer; 82, second buffer; 83, third buffer; 84, fourth buffer; 85, fixing frame. DETAILED DESCRIPTION

[0049] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0050] 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 to 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0051] In addition, the terms "first", "second", etc. are used herein only to describe different instances, and are not used to denote or imply relative importance or a number of indications of the technical features indicated. Thus, the technical features defined with "first", "second" can explicitly or implicitly include at least one of the technical features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0052] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0053] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0054] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes, and do not represent the only embodiment.

[0055] For ease of description, in this application, the direction parallel to the incident optical axis 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 from 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. Furthermore, the incident direction of the light on the reflective element 20 is defined as the negative Z-axis direction, and vice versa as the positive Z-axis direction, and the exit direction of the light from the reflective element 20 is defined as the positive X-axis direction, and vice versa as the negative X-axis direction. In some cases, the X-axis direction and the Z-axis direction are perpendicular. It should be understood that the perpendicularity described in this application includes both perpendicularity with an intersection and spatial perpendicularity without an intersection.

[0056] 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, which is used 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 due to 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 definitions, but as long as they are within the scope of the reflection function principle of the reflective element 20 and the corresponding optical path design, they should be regarded as a reasonable extension and expansion of the direction definition of this application.

[0057] Please combine Figure 1 、 Figure 2 as well as Figure 3 As 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 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 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 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.

[0058] More specifically, the two groups of sensing components 50 are respectively used to sense the rotational stroke 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 for sensing the rotational stroke 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 for sensing the rotational stroke 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 both arranged along the Z-axis direction.

[0059] 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.

[0060] In some embodiments, the reflection module 100 also includes a driving component 40 arranged 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 around the X-axis and Y-axis relative to the base 10; it should be understood that by arranging the driving component 40 on the negative side of the Z-axis of the movable component 30 and arranging 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 driving component 40 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.

[0061] It can be understood that if the driving component 40 is set 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 increasing the overall volume of the reflective module 100. In the present application, the driving component 40 is set 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.

[0062] 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.

[0063] 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.

[0064] That is to say, when the middle frame 31 rotates relative to the fixed plate 10a about the X-axis, the middle frame 31 and the carrier 32 are relatively stationary about the X-axis and there is no relative rotation. Therefore, the middle frame 31 will drive the carrier 32 and the reflective element 20 carried on 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, 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.

[0065] 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.

[0066] 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 6 As 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. 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.

[0067] Specifically, one of the intermediate frame 31 and the fixed plate 10a is provided with a support portion 10a1. The support portion 10a1 abuts against the other of the intermediate frame 31 and the fixed plate 10a to form a fulcrum, allowing the intermediate frame 31 to rotate relative to the fixed plate 10a about the fulcrum. It should be understood that the support portion 10a1 acts as a rotation axis between the fixed plate 10a and the intermediate frame 31, allowing the intermediate frame 31 to rotate relative to the fixed plate 10a about the X-axis.

[0068] 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, thereby limiting the support portion 10a1, so that the intermediate frame 31 can stably rotate relative to the fixed plate 10a around the X-axis direction.

[0069] Furthermore, the fixed plate 10a is provided with a support portion 10a1 along the positive direction side of the X-axis, and the intermediate frame 31 is provided with a rotating shaft groove 315 along the negative direction side of the X-axis. The auxiliary ball 311 cooperates with the support portion 10a1 to provide a support plane for the intermediate frame 31 to smoothly support the movement of the intermediate frame 31.

[0070] Of course, in some other embodiments, other auxiliary support structures may also be used between the intermediate frame 31 and the fixed plate 10a, such as guide rail sliders along the rotation direction, etc., as long as they can support the intermediate 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.

[0071] 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. 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.

[0072] 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 to coincide with the center projection of the support portion 10a1.

[0073] As can be understood, the limiting relationship between the support portion 10a1 and the rotation axis groove 315 provides the axis for the intermediate frame 31 to rotate about the X-axis. The auxiliary balls 311 merely serve to auxiliary support the intermediate frame 31 on the fixed plate 10a. The configuration of one of the first auxiliary ball groove 313 and the second auxiliary ball groove 10a2 as a linear groove reduces manufacturing complexity, thereby improving production efficiency and reducing production costs. Furthermore, to reduce the resistance generated by the auxiliary balls 311, the auxiliary balls 311 are loosely accommodated in the linear groove. In the minimum state, the auxiliary balls 311 only make contact with the linear groove at one point, and in the maximum state, the auxiliary balls 311 only make contact with the linear groove at three points.

[0074] In one specific embodiment, the linear groove has two long groove walls and two short groove walls. The two long groove walls are arranged opposite each other, and the two short groove walls are respectively connected to the two long groove walls. The two long groove walls are parallel to each other and extend along 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. In other words, the linear groove has a rounded rectangular shape, which helps to reduce the difficulty of machining the linear groove. Furthermore, the rounded rectangular shape can reduce the risk of the auxiliary ball 311 forming a dent when it impacts the location where the short groove wall and the long groove wall connect.

[0075] 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 intermediate frame 31 and one of the fixed plates 10a and the auxiliary ball 311 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.

[0076] It is worth mentioning that the support part 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 relative to the fixed plate 10a.

[0077] 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. This application does not impose any specific restrictions on this.

[0078] Furthermore, please combine Figure 6 as well as Figure 7 A gasket 314 is fixed to 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 and prevent the bottom of the groove from being pressed out due to excessive pressure from the balls during use of the reflector module 100.

[0079] For ease of description, the rotation axis of the carrier 32 along the Y-axis is defined in this application as an imaginary line along the Y-axis. Figure 3 、 Figure 8 as well as Figure 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.

[0080] In at least one embodiment, an imaginary line extending along the Y-axis passes through the two rotating balls 312 and the reflective element 20. It should be understood that the provision of the rotating balls 312 between the carrier 32 and the intermediate frame 31 helps reduce friction between the carrier 32 and the intermediate frame 31, thereby making the rotation of the carrier 32 relative to the intermediate frame 31 about the Y-axis smoother. This also helps reduce the driving force required to rotate the carrier 32, thereby improving the stability and reliability of the rotation of the carrier 32 about the Y-axis.

[0081] Specifically, the intermediate frame 31 includes a main frame body 31a and two supporting arms 31b fixed to either side of the main frame body 31a along the Y-axis. Two grooves 323 corresponding to the two supporting arms are defined on the negative X-axis side of the carrier 32. The two supporting arms 31b extend along the positive X-axis into the corresponding grooves 323, thereby movably clamping the rotating ball 312 between the supporting arms 31b and the bottom wall of the grooves 323. It should be understood that the two supporting arms 31b of the intermediate frame 31 support the carrier 32 in the X-axis direction and improve the connection reliability between the carrier 32 and the intermediate frame 31.

[0082] More specifically, the arm 31b is provided with a first rotating ball groove 31b1 on the side surface along the positive direction of the X-axis, and the groove 323 is provided with a second rotating ball groove 324 on the bottom wall along the negative direction of the X-axis. The rotating ball 312 can be movably clamped between the first rotating ball groove 31b1 and the second rotating ball groove 324.

[0083] In some embodiments, the imaginary line along the X-axis direction and the imaginary line along the Y-axis direction may intersect, or there may be no intersection.

[0084] Please combine Figure 2 、 Figure 10 as well as Figure 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.

[0085] 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.

[0086] In some embodiments, the first sensing component includes one or more first sensing magnets 51a and one or more first sensing elements 52a corresponding one-to-one 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 one-to-one to the second sensing magnets 51b.

[0087] 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.

[0088] More preferably, when viewed along the X-axis, the two first sensing magnets 51a are symmetrically arranged along the Z-axis on the carrier 32, with the imaginary line along the Y-axis (i.e., the rotation axis of the carrier 32 along the Y-axis) as the center. Specifically, the two first sensing magnets 51a are arranged on the surface of the carrier 32 along the negative side of the X-axis. When viewed along the Z-axis, the two second sensing magnets 51b are symmetrically arranged along the Y-axis on the carrier 32, with the imaginary line along the X-axis (i.e., the rotation axis of the carrier 32 along the X-axis) as the center. Specifically, the two second sensing magnets 51b are respectively arranged on the two side surfaces of the carrier 32 along the Y-axis. In other words, two first sensing elements 52a and two second sensing elements 52b are respectively arranged at corresponding positions on the base 10. It can be understood that arranging the two sensing magnets 51 in each sensing assembly 50 symmetrically about the corresponding rotation axis can effectively improve the symmetry of the information obtained by the two sensing elements 52, thereby facilitating improved sensing accuracy. Furthermore, the two first sensing magnets 51a are respectively arranged on the two side edges of the carrier 32 along the Z-axis. Such a configuration 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.

[0089] Furthermore, in some embodiments, a second magnetic attraction magnet 61b is further provided on the side surface of the carrier 32 along the negative direction of the X-axis, and a second magnetic yoke 62b corresponding to the second magnetic attraction 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 attraction magnet 61b can be increased, thereby reducing the interference of the second magnetic attraction magnet 61b on the first sensing component.

[0090] In some embodiments, a magnetic sheet is affixed to the surface of the sensing magnet 51 on the side away from the corresponding sensing element 52. The magnetic sheet is used for magnet assembly and can enhance the magnetic field strength on the side of the magnet away from the magnetic sheet. In other words, the magnetic sheet can enhance the magnetic field strength on the side of the sensing magnet 51 closer to the sensing element 52, facilitating the sensing element 52 to detect changes in the magnetic field of the sensing magnet 51 as the carrier 32 rotates, thereby improving sensing accuracy.

[0091] In some embodiments, the first sensing magnet 51 a and the second sensing magnet 51 b can 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.

[0092] 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.

[0093] 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.

[0094] It should be understood that in the present application, "embedded" includes at least two situations: component A is integrally formed in component B and component A is fixed in a pre-formed groove of component B by snapping, gluing or other means.

[0095] In some embodiments, the reflection module 100 further includes a first magnetic component and a second magnetic component. Figure 6 as well as Figure 12 As shown, the first magnetic attraction component includes a first magnetic attraction magnet 61a and a first magnetic yoke 62a 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 Figure 9 As shown, the second magnetic attraction assembly includes a second magnetic attraction magnet 61b and a second magnetic yoke 62b that are oppositely arranged 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.

[0096] 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.

[0097] 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.

[0098] It is worth mentioning that the projections of the first magnetic component and the second magnetic component along the X-axis do not overlap, that is, when observed along the X-axis, 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 the two do not share a common magnetic magnet or magnetic yoke. Therefore, the first magnetic component can independently control the magnitude and position of the magnetic attraction force between the carrier 32 and the intermediate frame 31, and the second magnetic component can independently control the magnitude and position of the magnetic attraction force between the intermediate frame 31 and the base 10, which is conducive to optimizing the performance of the two different rotation directions respectively. It should be understood that the non-overlapping projections of the first magnetic component and the second magnetic component along the X-axis means that the projections of the parts of the first magnetic component and the second magnetic component that provide the magnetic attraction function do not overlap.

[0099] Please combine Figure 6 as well as Figure 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. Therefore, disposing 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.

[0100] 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 more 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 it carries fewer components. Choosing to set the yoke on the intermediate frame 31 can effectively avoid increasing the size of the intermediate frame 31.

[0101] 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.

[0102] 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.

[0103] For further information, please refer to Figure 10 as well as Figure 12 The carrier 32 has a first magnetic magnet groove 325 opened 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 opened 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.

[0104] In some embodiments, the first and second magnetic yokes 62a, 62b are disposed on either side of the intermediate frame 31 along the X-axis to minimize the distance between the yokes and the corresponding magnets, thereby optimizing the magnetic attraction effect. Furthermore, the first and second magnetic yokes 62a, 62b are exposed on both sides of the intermediate frame 31 along the X-axis. Furthermore, the projections of the first and second magnetic yokes 62a, 62b along the Y-axis do not overlap. When viewed along the Y-axis, the first and second magnetic yokes 62a, 62b are spaced apart in the X-axis direction.

[0105] Please refer to Figure 13 As shown, in some embodiments, the first magnetic assembly is located on the positive side of the rotating ball 312 along the Z axis. In other words, when viewed along the X axis, the first magnetic assembly is located on the positive side of the rotating ball 312 along the Z axis. In particular, the center of the first magnetic magnet 61a of the first magnetic assembly is located on the positive side of the center of the rotating ball 312 along the Z axis.

[0106] Understandable, reference Figure 13 , the carrier 32 rotates relative to the intermediate 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 this magnetic attraction force, the driving magnet has a tendency to approach the first magnetic yoke 62a, thereby causing the driving magnet to have a tendency to approach the first magnetic yoke 62a around the Y-axis imaginary line (i.e. Figure 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.

[0107] In this regard, the present application sets the first magnetic component on the positive direction side of the rotating ball 312 along the Z axis, that is, referring to Figure 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 Figure 13 The carrier 32 and the intermediate frame 31 have a counterclockwise rotation tendency at an angle to offset the magnetic attraction between the first magnetic yoke 62a and the driving magnet, thereby reducing the influence of unnecessary magnetic attraction between the driving magnet and the first magnetic 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.

[0108] 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 still be as parallel to the X-axis as possible.

[0109] In some embodiments, the first magnetic assembly 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 any side of the carrier 32 and the middle frame 31 along the Y-axis direction.

[0110] Preferably, the first magnetic component is located in the middle position of the two rotating balls 312 along the Y-axis direction, so that the magnetic force on the carrier 32 toward the middle frame 31 is relatively balanced along the Y-axis direction. In other words, the possibility of the carrier 32 overturning on any side along the Y-axis direction due to uneven force can be further reduced.

[0111] Please combine Figure 5 as well as Figure 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 midpoint of the two second magnetic attraction magnets 61b along the X-axis direction is located within the support surface.

[0112] Specifically, the support portion 10a1 is at least partially offset 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 collinear and form a single support surface, which facilitates more stable support of the intermediate frame 31. It will be understood that the fulcrum of the two auxiliary balls 311 refers to the contact point between the auxiliary balls 311 and the intermediate frame 31 when the auxiliary balls 311 are centered in the auxiliary ball grooves, or the midpoint of the auxiliary balls 311 serves as the fulcrum.

[0113] 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 intermediate frame 31 from tipping over relative to the fixed plate 10a and improving the attachment reliability between the intermediate frame 31 and the fixed plate 10a.

[0114] 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 distance from the magnetic force to the three sides of the support surface is closer, thereby further improving the stability.

[0115] In some embodiments, the two auxiliary balls 311 are arranged along the Y-axis, 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, and the distance from the center of the support portion 10a1 to the center of the two auxiliary balls 311 is equal. This helps to more evenly distribute the supporting force provided by the support portion 10a1 and the auxiliary balls 311 on the movable component 30, thereby improving the stability and reliability of the movable component 30 when rotating about the X-axis, reducing the risk of the intermediate frame 31 being skewed due to uneven force, and thus helping to improve the controllability of the reflection module 100 and the imaging quality of the camera module.

[0116] 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.

[0117] Please combine Figure 2 、 Figure 10 as well as Figure 11 As shown, in some embodiments, the sensing magnet 51 is fixed to the movable assembly 30, and the sensing element 52 is fixed relative to the base 10. As can be understood, since the movable assembly 30 can rotate relative to the base 10, placing the sensing element 52 on the movable assembly 30 would make wiring connections difficult. Therefore, in this application, the sensing magnet 51 is fixed to the movable assembly 30, and the sensing element 52 is fixed relative to the base 10. This effectively simplifies wiring connections and makes the structure of the reflective module of this application more compact.

[0118] 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 .

[0119] Please combine Figure 11 as well as Figure 12As shown, in some embodiments, a circuit board slot 11 is defined on the outer wall of the base 10, within which a circuit board 70 is contoured and embedded. The sensing element 52 is electrically connected to the circuit board 70, and a sensing through-slot 111 corresponding one-to-one with the sensing element 52 is defined on the bottom wall of the circuit board slot 11. It will be appreciated that embedding the circuit board 70 within the circuit board slot 11 on the outer wall of the base 10 can, on the one hand, reduce space usage and make the reflective module more compact. Furthermore, compared to grooving the inner wall of the base 10, grooving the outer wall is less difficult to manufacture and makes installation of the circuit board 70 more convenient. Furthermore, the sensing element 52 is aligned with the sensing magnet 51 through the sensing through-slot 111, which can reduce the distance between the two and improve sensing accuracy.

[0120] Please combine Figure 5 、 Figure 10 as well as Figure 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. The bottom wall of the circuit board slot 11 corresponding to the circuit bottom plate 71 is provided with a coil slot 112. The driving component 40 includes a driving magnet 41 and a driving coil 42 arranged opposite to each other along the Z-axis. The driving coil 42 is electrically connected to the circuit bottom plate 71 and embedded in the coil slot 112. The driving magnet 41 is fixed to the side of the movable component 30 along the negative side of the Z-axis. It can be understood that embedding the driving coil 42 in the coil slot 112 is beneficial for reducing the overall volume of the reflection module 100 while also reducing the distance between the driving coil 42 and the driving magnet 41, thereby achieving the effect of improving the driving force of the driving component 40.

[0121] 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 when energized. In other words, the first driving magnet 41a can drive the carrier 32 and the reflective element 20 to rotate around the Y-axis.

[0122] 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.

[0123] In some embodiments, the first driving magnet 41 a has two magnetic poles on a side close to the first driving coil 42 a , and the two magnetic poles are distributed along the X-axis direction.

[0124] Preferably, the long sides of the two poles of the first driving magnet 41a and the long side of the first driving coil 42a are parallel to the Y-axis direction to increase the lever arm of the driving force, which is beneficial to improving the driving effect of the first driving component.

[0125] In a specific embodiment, the area between the two magnetic poles of the first driving magnet 41 a is a non-magnetic area.

[0126] In some embodiments, the second drive component includes two second drive magnets 41b, which are symmetrically arranged on both sides of the first drive magnet 41a along the Y-axis direction with the X-axis imaginary line as the center. The second drive magnet 41b has only one magnetic pole close to the side of the corresponding second drive coil 42b.

[0127] 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.

[0128] 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, thereby improving the driving effect of the second driving assembly. More preferably, the two second driving magnets 41b are disposed on both side edges of the movable assembly 30 along the Y-axis direction to maximize the length of the lever arm of the driving force, thereby improving the driving effect of the second driving assembly.

[0129] In some embodiments, a driving magnet slot 326 is defined along the negative Z-axis side of the carrier 32 , and the driving magnet 41 is embedded in the driving magnet slot 326 to reduce space occupation.

[0130] Furthermore, the carrier 32 is provided with a plurality of driving magnet slots 326 along the negative Z-axis direction, and the second driving magnet 41b and the first driving magnet 41a are both embedded in independent driving magnet slots 326. In other words, the second driving magnet 41b and the first driving magnet 41a are spaced apart.

[0131] Please combine Figure 11 、 Figure 12 as well as Figure 17As shown, in some embodiments, the circuit board 70 further comprises two circuit side plates 72 and a circuit back plate 73, the two circuit side plates 72 are located at both sides of the base 10 along the Y-axis direction and fixed with the circuit bottom plate 71, the circuit back plate 73 is located at the side of the base 10 along the negative direction of the X-axis and fixed with the circuit bottom plate 71, the first sensing element 52a is fixed at the side of the circuit back plate 73 along the positive direction of the X-axis, the second sensing element 52b is fixed at 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 through-slots 111.

[0132] Specifically, one of the circuit side plates 72 close to the base 10 is provided with a drive control chip 721, the drive control chip 721 is used to control the reflection module 100 and the lens module 200, so as to realize the control of anti-shake and focusing (zooming), arranging the drive control chip 721 on the circuit side plate 72 helps to reduce the concentration of electronic elements and is conducive to the assembly of the drive assembly 40.

[0133] Preferably, the circuit side plate 72 provided with the drive control chip 721 is further provided with a structure reinforcing piece corresponding to the drive control chip 721 at the side away from the base 10, so as to improve the mounting stability of the drive control chip 721.

[0134] More specifically, the two circuit side plates 72 are provided with an electrical lead-out portion 74 at the side along the positive direction of the X-axis, the circuit board 70 is electrically connected with the imaging module 300 through the electrical lead-out portion 74.

[0135] Please refer to Figure 2 In some embodiments, the reflection element 20 is implemented as a prism, the prism has an incident surface, a reflection surface and an exit surface.

[0136] Specifically, the reflection surface is a plane arranged at an angle of 45°, the incident surface is a convex surface (which can be a spherical surface, an aspherical surface or a free-form surface) convex to the incident direction, and the exit surface is a concave surface (which can be a spherical surface, an aspherical surface or a free-form surface) concave away from the exit direction. In short, the reflection element can be a surface-type prism with a curved surface type. In other embodiments, the reflection element can also be implemented as a mirror or a common prism without a curved surface.

[0137] Please refer to Figure 1 and Figure 16As shown, the camera module also includes a buffer module 80, which 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, thereby playing a buffering role to avoid the movable component 30 from colliding 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.

[0138] 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 movable component 30 from colliding and being damaged and to reduce the impact noise between the two when the movable component 30 rotates around the X-axis imaginary line relative to the base 10.

[0139] 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 impact noise between the two when the movable component 30 rotates around the Y-axis imaginary line relative to the base.

[0140] 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 arranged on at least one of the base 10 and the lens module 200, and is used to prevent the lens module 200 from colliding and being damaged and to reduce the impact noise between the two when the lens module 200 moves relative to the base along the X-axis direction.

[0141] Preferably, a cavity is defined within the fourth buffer member 84 to enhance the cushioning effect. More preferably, the fourth buffer member 84 has a D-shaped cross-section along the XOZ plane, with the curved surface of the D facing the lens module 200. The cavity within the fourth buffer member 84 extends through the fourth buffer member 84 along the Y-axis and conforms to the outer contour of the fourth buffer member 84. In other words, the fourth buffer member 84 also has a D-shaped cross-section along the XOZ plane.

[0142] In some implementations, the fourth buffer component 84 and the third buffer component 83 are integrally formed.

[0143] 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 the 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.

[0144] 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.

[0145] Please combine Figure 1 as well as Figure 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 retained 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; and the shell 400, the shell 400 is covered on the base 10.

[0146] 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.

[0147] 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). 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. After the photosensitive chip 310a receives light and forms an image, it is electrically connected to the mobile electronic device via the photosensitive circuit board 310b. The filter component 320 includes a filter holder 320b and a filter element 320a mounted on the filter holder 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.

[0148] 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.

[0149] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0150] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended 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 arranged in the base (10) about the X-axis direction and the Y-axis direction; Two groups of sensing components (50) are 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 the sensing components (50) includes a sensing magnet (51) and a sensing element (52) 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. The two magnetic poles of each sensing magnet (51) facing the corresponding sensing element (52) are both arranged along the Z-axis direction. The movable component (30) comprises an intermediate frame (31) and a carrier (32), wherein the carrier (32) is capable of rotating around the Y-axis relative to the intermediate frame (31); The reflection module (100) further comprises a driving component (40) arranged on the negative Z-axis side of the movable component (30), the driving component (40) being used to drive the carrier (32) to rotate relative to the base (10) around the X-axis and the Y-axis. The reflection module (100) includes two sets of sensing components (50), the first sensing component is used to sense the rotation stroke of the carrier (32) around the Y-axis direction, and 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 relative to the base (10); the second sensing component is used to sense the rotation stroke of the carrier (32) around the X-axis direction, and 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 relative to the base (10); The two first sensing magnets (51a) are symmetrically arranged on the carrier (32) along the Z-axis direction with the rotation axis of the carrier (32) along the Y-axis direction as the center, and the two second sensing magnets (51b) are symmetrically arranged on the carrier (32) along the Y-axis direction with the rotation axis of the carrier (32) along the X-axis direction as the center; The two first sensing magnets (51a) are respectively arranged on two side edges of the carrier (32) 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), wherein the fixed plate (10a), the intermediate frame (31) and the carrier (32) are stacked along the X-axis direction, and the intermediate frame (31) is capable of rotating around the X-axis direction relative to the fixed plate (10a).

4. The reflection module according to claim 3, characterized in that: The reflection module (100) further includes 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) including 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 corresponding to the second driving coil (42b).

6. The reflection module according to claim 3, characterized in that: The reflection module (100) further includes a first magnetic attraction component and a second magnetic attraction component, wherein the first magnetic attraction component includes a first magnetic attraction magnet (61a) and a first magnetic yoke (62a) 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); the second magnetic attraction component includes a second magnetic attraction magnet (61b) and a second magnetic yoke (62b) 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 fixed to the middle frame (31).

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

9. The reflection module according to claim 3, 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.

10. The reflection module according to claim 6, characterized in that: 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 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 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, and the fixed plate (10a) is provided with a second auxiliary ball groove (10a2) along the positive direction of the X-axis. 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).

11. The reflection module according to claim 10, characterized in that: At least two auxiliary balls (311) are movably mounted between the intermediate 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) 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.

12. The reflection module according to claim 5, characterized in that: 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).

13. The reflection module according to claim 12, characterized in that: The circuit board (70) includes a circuit base plate (71) located on the negative side of the base (10) along the Z-axis, and a coil through-slot (112) is provided through the bottom wall of the circuit board slot (11) corresponding to the circuit base plate (71). The driving component (40) includes a driving magnet (41) and a driving coil (42) arranged relatively along the Z-axis direction. The driving coil (42) is electrically connected to the circuit base plate (71) and embedded in the coil through-slot (112). The driving magnet (41) is fixed to the side of the movable component (30) along the negative side of the Z-axis.

14. A camera module, characterized in that: include: The reflection module (100) according to any one of claims 1 to 13; a reflective element (20), the reflective element (20) being mounted on the reflective module (100); a lens module (200), the lens module (200) being disposed in the base (10) and being held on a light reflection path of the reflective element (20); an imaging module (300), the imaging module (300) being arranged on the light-emitting side of the base (10) and receiving light emitted by the lens module (200) for imaging; A shell (400) is provided on the base (10).

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