Camera module and electronic device

Abstract

The invention provides a camera module and electronic equipment, and belongs to the technical field of automatic focusing. The camera module comprises an actuator, an optical lens and a photosensitive component, the actuator comprises a rotor part, a stator part and a detection assembly. The optical lens is connected with the mover part, the photosensitive assembly is connected with the stator part, and the mover part and the stator part are movably connected along a light inlet path of the optical lens; the detection assembly comprises at least one movable pole piece and at least one fixed pole piece; the at least one moving pole piece is located on the rotor part, the at least one fixed pole piece is located on the stator part, and the position of the at least one moving pole piece is opposite to the position of the at least one fixed pole piece at intervals. According to the camera module provided by the invention, the positions of the movable pole piece, the rotor component and the optical lens are determined by detecting the change of the capacitance value between the movable pole piece and the fixed pole piece which are oppositely arranged at an interval, so that closed-loop focusing of the camera module is realized, and the overall size of the camera module is reduced.

Description

Technical Field

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

[0002] In the related art, the camera module inside the electronic device realizes focusing in a manner called AF (Auto Focus), which usually uses a Hall device to measure the change in the magnetic induction intensity of the moving parts to detect the change in the position of the camera module lens, thereby completing the closed-loop focusing function.

[0003] However, this detection method has two major problems: ① Hall devices are easily disturbed by the external magnetic field environment, resulting in large errors in the position detection results, thereby affecting the camera's AF process and the shooting effect; ② Hall devices are expensive and need to be specially arranged and welded inside the camera module, which has a high process cost, thereby increasing the cost of the mobile terminal. Summary of the invention

[0004] The present application provides a camera module and an electronic device, which can solve the problem that the use of Hall devices to detect changes in lens position is susceptible to interference and has high costs.

[0005] The technical solution is as follows:

[0006] In one aspect, a camera module is provided, the camera module comprising: an actuator, an optical lens and a photosensitive component;

[0007] The actuator comprises a mover part, a stator part and a detection component;

[0008] The optical lens is connected to the movable part, the photosensitive component is connected to the stator part, and the movable part and the stator part are movably connected along the light input path of the optical lens;

[0009] The detection assembly includes at least one moving pole piece and at least one fixed pole piece;

[0010] The at least one moving pole piece is located on the moving part, and the at least one fixed pole piece is located on the stator part, and the position of the at least one moving pole piece is opposite to the position of the at least one fixed pole piece;

[0011] The camera module is configured such that when the movable part drives the optical lens to move along the light input path, the relative positions of the at least one movable pole piece and the at least one fixed pole piece change.

[0012] In some embodiments, the detection assembly further comprises a detection unit, and the detection unit is electrically connected to the at least one moving pole piece and the at least one fixed pole piece respectively;

[0013] The detection unit is used to detect the change in capacitance between the at least one moving pole piece and the at least one fixed pole piece, and determine the relative position of the mover part and the stator part according to the change in capacitance.

[0014] In some embodiments, the mover portion includes a carrier member and a drive coil;

[0015] A mounting hole for connecting the optical lens is provided in the middle of the carrier, and the axis of the mounting hole coincides with the light entry path; the driving coil surrounds the circumferential outer side of the carrier, and the axis of the driving coil coincides with the light entry path;

[0016] The at least one moving pole piece is located on the outer side of the carrier component.

[0017] In some embodiments, the stator portion includes a housing member and a magnet assembly;

[0018] The movable part is located in the housing, and the housing is provided with an avoidance hole, and the axis of the avoidance hole coincides with the light entrance path;

[0019] The magnet assembly is located inside the housing, the position of the magnet assembly corresponds to the position of the driving coil, and the magnet assembly interacts with the driving coil to drive the mover part to move along the light entry path;

[0020] The at least one fixed pole piece is located on the inner side of the shell, and the position of the at least one fixed pole piece is spaced opposite to the position of the at least one moving pole piece.

[0021] In some embodiments, the number of the fixed pole pieces is two, and the two fixed pole pieces are arranged on the inner side surface of the shell at intervals along the direction of the light input path, and the number of the moving pole piece is one.

[0022] In some embodiments, the orthographic projection of the housing member along the light-entry path is a rectangle, and the light-entry path coincides with the center of the rectangle;

[0023] The magnet assembly includes four magnet bodies, and the four magnet bodies are respectively located at the four corners of the rectangle.

[0024] In some embodiments, the orthographic projection of the carrier along the light input path is one of a circle, a hexagon, and an octagon.

[0025] In some embodiments, the orthographic projection of the carrier member along the light-entry path is an octagon;

[0026] Four first sides of the carrier member are respectively parallel to the four sides of the shell member, and the other four second sides of the carrier member respectively divide the four corners of the shell member into four isosceles triangle spaces;

[0027] The four magnets are respectively located in the four isosceles triangle spaces and correspond to the shapes of the isosceles triangle spaces;

[0028] The at least one moving pole piece is located on at least one of the four first sides of the carrier component, the at least one fixed pole piece is located on at least one of the four sides of the shell component, and the at least one moving pole piece and the at least one fixed pole piece are positioned opposite to each other.

[0029] In some embodiments, the actuator further comprises at least one elastic member, the at least one elastic member is located at one end of the mover portion along the light entrance path, and the at least one elastic member is connected between the mover portion and the stator portion; the at least one moving pole piece is electrically connected to the stator portion through the at least one elastic member;

[0030] and / or,

[0031] The actuator also includes a base portion connected to the stator portion.

[0032] In some embodiments, the photosensitive component includes a circuit board and a photosensitive element, the photosensitive element is electrically connected to the circuit board, and the optical lens is located on the photosensitive path of the photosensitive element.

[0033] On the other hand, an electronic device is provided, which includes the camera module described in the present application.

[0034] The beneficial effects of the technical solution provided by this application include at least:

[0035] The camera module of the present application includes an actuator, an optical lens and a photosensitive component. The optical lens is connected to the movable part of the actuator and can move along the light path with the movable part to achieve zooming of the camera module; the photosensitive component is connected to the stator part to receive the light entering through the optical lens to perform imaging tasks; the detection component includes a moving pole piece and a fixed pole piece arranged relatively at intervals, and the moving pole piece can move with the movable part and the optical lens, thereby changing the relative position between the moving pole piece and the fixed pole piece, and the change in the relative position will cause the change in the facing area between the moving pole piece and the fixed pole piece, and the change in the facing area will cause the capacitance value between the moving pole piece and the fixed pole piece to change. By measuring the capacitance value between the moving pole piece and the fixed pole piece, the position of the moving pole piece, the movable component and the optical lens can be determined, thereby achieving closed-loop focusing of the camera module;

[0036] The detection component has a simple structure and low cost. The moving pole piece and the fixed pole piece can be separated by only a small distance, which is beneficial to reducing the spacing between the moving part and the stator part, reducing the overall size of the actuator, and facilitating the miniaturization and micro-miniaturization of the camera module. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 is a structural schematic diagram of a camera module provided in an embodiment of the present application;

[0039] Figure 2 is a structural cross-sectional view of a camera module provided in an embodiment of the present application;

[0040] Figure 3 is a schematic diagram of the structure of the detection component provided in an embodiment of the present application;

[0041] Figure 4 is a structural exploded diagram of a camera module provided in an embodiment of the present application;

[0042] Figure 5 is another structural cross-sectional view of the camera module provided in an embodiment of the present application;

[0043] Figure 6 This is another structural cross-sectional view of the camera module provided in an embodiment of the present application.

[0044] The reference numerals in the figures represent respectively:

[0045] 1. Actuator;

[0046] 11. mover part; 111. carrier member; 11101. first side; 11102. second side; 11. mounting hole; 112. driving coil;

[0047] 12. stator part; 121. housing member; 1211. avoidance hole; 122. magnet assembly; 1221. magnet body;

[0048] 13. Detection assembly; 131. Moving pole piece; 132. Fixed pole piece; 133. Detection unit;

[0049] 14. elastic member; 141. upper spring piece; 142. lower spring piece;

[0050] 15. Base part;

[0051] 2. Optical lens;

[0052] 3. Photosensitive components;

[0053] 31. Circuit board; 32. Photosensitive element. DETAILED DESCRIPTION

[0054] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0055] In the description of the present application, 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 directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0056] It should be understood that in this application, "electrical connection" can be understood as physical contact and electrical conduction between components; it can also be understood as a form of connection between different components in the circuit structure through physical lines such as printed circuit board (PCB) copper foil or wires that can transmit electrical signals. "Communication connection" can refer to electrical signal transmission, including wireless communication connection and wired communication connection. Wireless communication connection does not require a physical medium and does not belong to a connection relationship that limits the product structure. "Connection" and "connected" can both refer to a mechanical connection relationship or a physical connection relationship, that is, A is connected to B or A is connected to B, which can mean that there is a fastening component (such as screws, bolts, rivets, etc.) between A and B, or A and B are in contact with each other and A and B are difficult to separate.

[0057] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those of ordinary skill in the art.

[0058] A Hall device is a solid-state electronic device that utilizes the Hall effect. It uses a magnetic field as a working medium and converts the motion parameters of an object into a digital voltage output, giving it sensing and switching functions.

[0059] Focal length is also called focal length. It is a measure of the convergence or divergence of light in an optical system. It refers to the distance from the center of the lens to the focus of light. Focusing is also called focusing. The process of changing the distance and position of the object through the camera focusing mechanism to make the image of the object clear is focusing.

[0060] In the camera modules of electronic devices such as mobile phones, in order to make the image of the object being photographed clear, it is necessary to adjust the distance between the lens and the photosensitive element. However, the camera module cannot be adjusted manually like a digital camera, and can only be automatically adjusted through structures such as voice coil motors. In order to achieve a closed loop for the diagonal of the camera module, a Hall device is usually used to measure the change in the magnetic induction intensity of the moving parts to detect the change in the position of the camera module lens, thereby completing the closed-loop focusing function.

[0061] However, due to the shortcomings of Hall devices such as poor anti-interference and high device cost, the use of camera modules is limited.

[0062] Therefore, the present application provides a camera module and an electronic device, which utilize a detection component to achieve closed-loop focus of the camera module. The detection component has a simple structure and low cost. The moving pole piece and the fixed pole piece can be separated by only a small distance, which is beneficial to reducing the spacing between the moving part and the stator part, which is beneficial to reducing the overall size of the actuator, and is beneficial to the miniaturization and micro-miniaturization of the camera module.

[0063] The electronic device in the embodiment of the present application may be a mobile phone, a tablet computer, a laptop computer, a smart bracelet, a smart watch, a smart helmet, smart glasses, etc. The electronic device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, an electronic device in a 5G network, or an electronic device in a future Public Land Mobile Network (PLMN), etc., and the embodiment of the present application does not limit this.

[0064] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0065] On the one hand, combined with Figure 1 , 2 As shown, this embodiment provides a camera module, which includes: an actuator 1, an optical lens 2 and a photosensitive component 3.

[0066] The actuator 1 includes a mover part 11, a stator part 12 and a detection component 13; the optical lens 2 is connected to the mover part 11, the photosensitive component 3 is connected to the stator part 12, and the mover part 11 and the stator part 12 are movably connected along the light input path of the optical lens 2; the detection component 13 includes at least one moving pole piece 131 and at least one fixed pole piece 132; at least one moving pole piece 131 is located on the mover part 11, at least one fixed pole piece 132 is located on the stator part 12, and the position of at least one moving pole piece 131 and the position of at least one fixed pole piece 132 are spaced relative to each other.

[0067] The camera module is configured such that when the movable part 11 drives the optical lens 2 to move along the light input path, the relative positions of at least one movable pole piece 131 and at least one fixed pole piece 132 change.

[0068] The camera module of this embodiment includes an actuator 1, an optical lens 2 and a photosensitive component 3. The optical lens 2 is connected to the movable part 11 of the actuator 1 and can move along the light input path with the movable part 11 to achieve zooming of the camera module; the photosensitive component 3 is connected to the stator part 12 to receive the light entering through the optical lens 2 to perform an imaging task; the detection component 13 includes a moving pole piece 131 and a fixed pole piece 132 arranged relatively at intervals, and the moving pole piece 131 can move with the movable part 11 and the optical lens 2, thereby changing the relative position between the moving pole piece 131 and the fixed pole piece 132. The change in the relative position will cause the change in the facing area between the moving pole piece 131 and the fixed pole piece 132. The change in the facing area will cause the capacitance value between the moving pole piece 131 and the fixed pole piece 132 to change. By measuring the capacitance value between the moving pole piece 131 and the fixed pole piece 132, the position of the moving pole piece 131, the movable part and the optical lens 2 can be determined, thereby achieving closed-loop focusing of the camera module.

[0069] The detection component 13 has a simple structure and low cost. The moving pole piece 131 and the fixed pole piece 132 can be spaced only a small distance apart, which is beneficial to reducing the spacing between the movable part 11 and the stator part 12, which is beneficial to reducing the overall size of the actuator 1 and is beneficial to the miniaturization and micro-miniaturization of the camera module.

[0070] Compared with the Hall device in the related art, the detection component 13 of this embodiment realizes lens position detection through the moving electrode piece 131 and the fixed electrode piece 132 with smaller thickness. The spacing between the moving electrode piece 131 and the fixed electrode piece 132 can be as small as possible, and it is only necessary to ensure that they do not touch each other. Therefore, the thickness of the side of the camera module where the detection component 13 is located can be as thin as possible, thereby reducing the lateral size of the entire camera module (the size in the cross section perpendicular to the light input path), which is conducive to the miniaturization and micro-miniaturization of the camera module with autofocus function, and is conducive to the application scope of the camera module in electronic equipment.

[0071] Combination Figure 3 As shown, in some embodiments, the detection component 13 further includes a detection unit 133 , and the detection unit 133 is electrically connected to at least one moving pole piece 131 and at least one fixed pole piece 132 , respectively.

[0072] The detection unit 133 is used to detect the change in capacitance between at least one moving pole piece 131 and at least one fixed pole piece 132 , and determine the relative position of the mover part 11 and the stator part 12 according to the change in capacitance.

[0073] According to the determining formula of the capacitor device: C=εS / 4πkd (C is the capacitance value, ε is a constant, S is the facing area of ​​the capacitor plates, d is the distance between the capacitor plates, and k is the electrostatic force constant), when the distance d between the capacitor plates is a constant, the capacitance value of the capacitor is only proportional to the facing area S. Therefore, the position change of the movable part 11 can be detected by the change in the capacitance value of the capacitor caused by the change in the facing area.

[0074] In this embodiment, the moving pole piece 131 only moves along the light input path with the moving part 11, and the distance between the moving pole piece 131 and the fixed pole piece 132 is a constant value, but the facing area of ​​the moving pole piece 131 and the fixed pole piece 132 will change with the activity degree of the moving part 11, and according to the determination formula of the capacitor device, it can be known that the facing area and the capacitance value are in a linear relationship. The detection unit 133 is electrically connected to the moving pole piece 131 and the fixed pole piece 132 respectively. After detecting the capacitance value between the moving pole piece 131 and the fixed pole piece 132, the facing area between the moving pole piece 131 and the fixed pole piece 132 can be determined according to the capacitance value. Because the areas of the moving pole piece 131 and the fixed pole piece 132 are regular shapes (for example, squares, rectangles, etc.), the relative positions of the moving pole piece 131 and the fixed pole piece 132 in the direction of the light input path can be easily calculated, so that the relative positions of the stator part 12 and the moving part 11 in the direction of the light input path can be determined, thereby realizing the closed-loop focus of the camera module.

[0075] Combination Figure 4 , 5 As shown, in some embodiments, the movable part 11 includes a carrier part 111 and a driving coil 112; a mounting hole 11 for connecting the optical lens 2 is provided in the middle of the carrier part 111, and the axis of the mounting hole 11 coincides with the light input path; the driving coil 112 surrounds the circumferential outer side surface of the carrier part 111, and the axis of the driving coil 112 coincides with the light input path; at least one moving pole piece 131 is located on the outer side surface of the carrier part 111.

[0076] The movable part 11 of the present embodiment includes a carrier part 111 and a driving coil 112, wherein the optical lens 2 is installed in the mounting hole 11 of the carrier part 111, and the driving coil 112 is wound around the circumferential outer side of the carrier part 111. After the driving coil 112 is energized, it can generate a magnetic force with the magnetic structure of the stator part 12, thereby pushing the carrier part 111 to move along the light input path. The carrier part 111 drives the optical lens 2 to move closer to or away from the photosensitive component 3 along the direction of the light input path, thereby realizing the focal length adjustment of the camera module.

[0077] The moving pole piece 131 is located on the outer side of the carrier 111 , opposite to the fixed pole piece 132 of the stator portion 12 . The moving pole piece 131 moves with the carrier 111 , changing the facing area between the moving pole piece 131 and the fixed pole piece 132 .

[0078] Combination Figure 4 , 5 As shown, in some embodiments, the stator part 12 includes a shell member 121 and a magnet assembly 122; the mover part 11 is located in the shell member 121, and the shell member 121 is provided with an avoidance hole 1211, and the axis of the avoidance hole 1211 coincides with the light input path.

[0079] Exemplarily, the carrier member 111 of the mover part 11 is located in the shell member 121 , the mounting hole 111 of the carrier member 111 coincides with the axis of the avoidance hole 1211 of the shell member 121 , and the top of the optical lens 2 extends to the outside of the stator part 12 through the avoidance hole 1211 .

[0080] The magnet assembly 122 is located on the inner side of the shell 121 . The position of the magnet assembly 122 corresponds to the position of the driving coil 112 . The magnet assembly 122 interacts with the driving coil 112 to drive the mover part 11 to move along the light path.

[0081] At least one fixed pole piece 132 is located on the inner side of the housing 121 , and the position of the at least one fixed pole piece 132 is spaced opposite to the position of the at least one moving pole piece 131 .

[0082] The magnetic force generated by the magnetic field generated by the magnet assembly 122 and the magnetic field generated when the driving coil 112 is energized is used to approach each other, thereby pushing the carrier component 111 to move along the light input path relative to the shell component 121. The relative position of the photosensitive component 3 and the shell component 121 remains unchanged. The carrier component 111 drives the optical lens 2 to approach or move away from the photosensitive component 3 along the direction of the light input path, thereby realizing the focal length adjustment of the camera module.

[0083] In some embodiments, there are two fixed pole pieces 132 , which are spaced apart on the inner side surface of the housing 121 along the direction of the incoming light path, and there is only one moving pole piece 131 .

[0084] The fixed electrode pieces 132 are arranged at intervals on the inner side surface of the shell 121 along the direction of the light input path. When the moving electrode piece 131 moves along the direction of the light input path, different parts of the moving electrode piece 131 can form two capacitor structures with the two fixed electrode pieces 132 respectively. The detection unit 133 detects the capacitance values ​​of the two capacitor structures respectively, and can more accurately determine the relative position of the moving electrode piece 131 and the fixed electrode piece 132, thereby improving the position accuracy of the optical lens 2 and improving the focusing accuracy of the camera module.

[0085] Combination Figure 6 As shown, in some embodiments, the orthographic projection of the housing 121 along the light-incoming path is a rectangle, and the light-incoming path coincides with the center of the rectangle; the magnet assembly 122 includes four magnet bodies 1221, and the four magnet bodies 1221 are respectively located at the four corners of the rectangle. Exemplarily, the orthographic projection of the housing 121 along the light-incoming path is a square.

[0086] By designing the housing 121 to be in a rectangular shape when projected orthographically, the camera module has a regular edge shape, which facilitates assembly and stacking of the camera module in an electronic device.

[0087] In addition, arranging the magnet bodies 1221 at the four corners of the square can make full use of the internal space of the shell member 121 without occupying the lateral space of the shell member 121, so that the thickness of the side of the camera module can be reduced as much as possible, thereby reducing the lateral size of the entire camera module (the size in the cross section perpendicular to the light input path), which is conducive to the miniaturization and micro-miniaturization of the camera module with autofocus function, and is conducive to the application scope of the camera module in electronic devices.

[0088] In some embodiments, the orthographic projection of the carrier member 111 along the light-incoming path is one of a circle, a hexagon, and an octagon. The use of the carrier member 111 in the above shape is conducive to reducing the lateral size of the carrier member 111 and reducing the overall size of the camera module. Optionally, the orthographic projection of the carrier member 111 along the light-incoming path is a circle, a regular hexagon, or a regular octagon.

[0089] Combination Figure 4 , 5 and Figure 6 As shown, in some embodiments, the orthographic projection of the carrier member 111 along the light input path is an octagon, optionally a regular octagon.

[0090] Four first sides 11101 of the carrier member 111 are parallel to the four sides of the shell member 121 respectively, and the other four second sides 11102 of the carrier member 111 divide the four corners of the shell member 121 into four isosceles triangle spaces respectively; the four magnets 1221 are respectively located in the four isosceles triangle spaces and correspond to the shapes of the isosceles triangle spaces.

[0091] At least one moving pole piece 131 is located on at least one of the four first sides 11101 of the carrier member 111, and at least one fixed pole piece 132 is located on at least one of the four sides of the shell member 121, and the positions of at least one moving pole piece 131 and at least one fixed pole piece 132 are opposite.

[0092] Through the above arrangement, the regular octagonal carrier member 111 can have a smaller lateral dimension while meeting the requirements for installing the optical lens 2; the magnet body 1221 is arranged in four isosceles triangle spaces surrounded by the second side 11102 of the carrier member 111 and the four corners of the shell member 121, so that the magnet body 1221 has sufficient assembly space while not occupying the lateral dimension of the shell member 121.

[0093] The first side 11101 of the carrier 111 and the four sides of the shell 121 only need to maintain a small safety gap (the minimum distance at which the carrier 111 will not interfere with the shell 121 when moving along the light path), further reducing the lateral size of the camera module.

[0094] Combination Figure 4 , 5 As shown, in some embodiments, the actuator 1 further includes at least one elastic member 14, the at least one elastic member 14 is located at one end of the mover portion 11 along the light path, and the at least one elastic member 14 is connected between the mover portion 11 and the stator portion 12. At least one moving pole piece 131 is electrically connected to the stator portion 12 through the at least one elastic member 14.

[0095] Optionally, the elastic member 14 includes an upper elastic sheet 141 and a lower elastic sheet 142 , the upper elastic sheet 141 is connected between the upper end of the carrier member 111 and the upper end of the shell member 121 , and the lower elastic sheet 142 is connected between the lower end of the carrier member 111 and the lower end of the shell member 121 .

[0096] Through the above arrangement, the mover part 11 is elastically and movably connected to the stator part 12 through the upper spring piece 141 and the lower spring piece 142. When the driving coil 112 is energized, the driving coil 112 will generate a coil magnetic field, and the coil magnetic field and the magnetic magnetic field generated by the magnet assembly 122 interact with each other. The driving coil 112 will move along the light path, and the optical lens 2 mounted on the carrier 111 will move together. When the driving coil 112 is de-energized, the mover part 11 returns under the elastic force of the upper spring piece 141 and the lower spring piece 142, thereby realizing the autofocus function of the camera module.

[0097] The moving pole piece 131 is electrically connected to the stator part 12, specifically the power supply module in the stator part 12, by using the elastic member 14. The power supply module is also electrically connected to the fixed pole plate 132 in the stator part 12, which is beneficial to improving the integration of the camera module and reducing the difficulty of wiring in the camera module.

[0098] Combination Figure 4 , 5 As shown, in some embodiments, the actuator 1 further includes a base portion 15, which is connected to the stator portion 12. The base portion 15 is connected to the lower end of the housing member 121 of the stator portion 12, wrapping the mover portion 11 therein, thereby achieving the integration of the actuator 1.

[0099] Combination Figure 2 As shown, in some embodiments, the photosensitive component 3 includes a circuit board 31 and a photosensitive element 32 , the photosensitive element 32 is electrically connected to the circuit board 31 , and the optical lens 2 is located on the photosensitive path of the photosensitive element 32 .

[0100] The camera module of this embodiment is used to capture images or videos.

[0101] In some possible implementations, the photosensitive element 32 is also called an image sensor, which may be a complementary metal oxide semiconductor (CMOS) or a charge coupled device (CCD). It may also be other types of image sensors other than CMOS or CCD, such as a charge injection device (CID).

[0102] It is understandable that for CMOS, a digital signal processor (DSP) can be integrated into CMOS. CMOS has the advantages of high integration, low power consumption, and low cost, and is more suitable for electronic devices with limited installation space, such as mobile phones.

[0103] In some possible implementations, a printed circuit is provided on the surface of the circuit board 31, and the circuit board 31 includes a printed circuit board 31 (Printed Circuit Board, PCB), a flexible printed circuit board (Flexible Printed Circuit Board, FPC), a soft-rigid combination board, etc.

[0104] In some possible implementations, the camera module may further include a flash. The flash may be a single-color temperature flash or a dual-color temperature flash. The dual-color temperature flash refers to a combination of a warm light flash and a cold light flash, which may be used for light compensation at different color temperatures.

[0105] Exemplarily, the camera module includes a front camera and a rear camera. Usually, the front camera is arranged on the front panel of the electronic device, and the rear camera is arranged on the back of the electronic device. In some embodiments, there are at least two rear cameras, which are any one of a main camera, a depth of field camera, a wide-angle camera, and a telephoto camera, so as to realize the background blur function by fusing the main camera and the depth of field camera, the panoramic shooting by fusing the main camera and the wide-angle camera, and the virtual reality (VR) shooting function or other fusion shooting functions.

[0106] On the other hand, this embodiment provides an electronic device, which includes the camera module of the present application.

[0107] The electronic device of this embodiment adopts the camera module of the present application and has all the beneficial technical effects of all the embodiments in this document.

[0108] In some possible implementations, the electronic device includes a mainboard.

[0109] In the camera module provided in this embodiment, during the shooting process, the imaging light of the object enters the optical lens and then reaches the photosensitive element. The photons in the imaging light hit the image sensor to generate movable charges. This is the internal photoelectric effect, and the movable charges gather to form an electrical signal.

[0110] The electrical signal is transmitted to the main board through a flexible circuit board or the like. The main board is provided with an analog-to-digital converter (A / D converter) and a digital signal processor (DSP). The A / D converter converts the electrical signal into a digital signal, which is processed by the DSP and finally transmitted to the screen of the electronic device to display the image, thus realizing the shooting of the object.

[0111] In some possible implementations, the terminal device may also include a radio frequency (RF) circuit, a memory including one or more computer-readable storage media, an input unit, a display unit, a sensor, an audio circuit, a Wi-Fi module, a processor including one or more processing cores, and a power supply and other components.

[0112] Among them, the detection unit is electrically connected to the processor. The processor is the control center of the terminal device, which uses various interfaces and lines to connect various parts of the entire mobile phone. By running or executing software programs and / or modules stored in the memory, and calling data stored in the memory, it executes various functions of the terminal device and processes data, thereby monitoring the mobile phone as a whole. Optionally, the processor may include one or more processing cores; preferably, the processor may integrate an application processor and a modem processor, wherein the application processor mainly processes operating storage media, user interfaces, and application programs, etc., and the modem processor mainly processes wireless communications. It can be understood that the above-mentioned modem processor may not be integrated into the processor.

[0113] It should be noted that the "several" and "at least one" mentioned in this article refer to one or more, and "multiple" and "at least two" refer to two or more. "And / or" describes the association relationship of the associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0114] 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 technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0115] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0116] In the description of this specification, the reference terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application.

[0117] The above description is only an embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present application shall be included in the protection scope of the present application.

Claims

1. A camera module, characterized in that: The camera module comprises: an actuator (1), an optical lens (2) and a photosensitive component (3); The actuator (1) comprises a mover part (11), a stator part (12) and a detection component (13); The optical lens (2) is connected to the movable part (11), the photosensitive component (3) is connected to the stator part (12), and the movable part (11) and the stator part (12) are movably connected along the light entry path of the optical lens (2); The detection component (13) comprises at least one moving pole piece (131) and at least one fixed pole piece (132); The at least one moving pole piece (131) is located on the moving part (11), the at least one fixed pole piece (132) is located on the stator part (12), and the position of the at least one moving pole piece (131) and the position of the at least one fixed pole piece (132) are spaced opposite to each other; The camera module is configured such that when the movable part (11) drives the optical lens (2) to move along the light input path, the relative positions of the at least one movable pole piece (131) and the at least one fixed pole piece (132) change.

2. The camera module according to claim 1, characterized in that: The detection component (13) further comprises a detection unit (133), wherein the detection unit (133) is electrically connected to the at least one moving pole piece (131) and the at least one fixed pole piece (132) respectively; The detection unit (133) is used to detect the change in capacitance between the at least one moving pole piece (131) and the at least one fixed pole piece (132), and to determine the relative position of the mover part (11) and the stator part (12) based on the change in capacitance.

3. The camera module according to claim 1 or 2, characterized in that: The mover part (11) comprises a carrier member (111) and a driving coil (112); A mounting hole (1111) connected to the optical lens (2) is provided in the middle of the carrier component (111), and the axis of the mounting hole (1111) coincides with the light entry path; the drive coil (112) surrounds the circumferential outer side surface of the carrier component (111), and the axis of the drive coil (112) coincides with the light entry path; The at least one moving pole piece (131) is located on the outer side surface of the carrier component (111).

4. The camera module according to claim 3, characterized in that: The stator part (12) comprises a housing member (121) and a magnet assembly (122); The mover part (11) is located in the housing part (121); the housing part (121) is provided with an avoidance hole (1211); the axis of the avoidance hole (1211) coincides with the light entry path; The magnet component (122) is located on the inner side of the housing (121); the position of the magnet component (122) corresponds to the position of the driving coil (112); the magnet component (122) interacts with the driving coil (112) to drive the mover part (11) to move along the light entry path; The at least one fixed pole piece (132) is located on the inner side surface of the housing (121), and the position of the at least one fixed pole piece (132) is spaced apart from the position of the at least one moving pole piece (131).

5. The camera module according to claim 4, characterized in that: The number of the fixed pole pieces (132) is two, and the two fixed pole pieces (132) are arranged at intervals on the inner side surface of the housing (121) along the direction of the light entrance path, and the number of the moving pole piece (131) is one.

6. The camera module according to claim 4, characterized in that: The orthographic projection of the housing (121) along the light-entry path is a rectangle, and the light-entry path coincides with the center of the rectangle; The magnet assembly (122) comprises four magnet bodies (1221), and the four magnet bodies (1221) are respectively located at the four corners of the rectangle.

7. The camera module according to claim 6, characterized in that: The orthographic projection of the carrier element (111) along the light entry path is one of a circle, a hexagon and an octagon.

8. The camera module according to claim 7, characterized in that: The orthographic projection of the carrier element (111) along the light entry path is an octagon; Four first sides (11101) of the carrier member (111) are respectively parallel to four sides of the shell member (121), and the other four second sides (11102) of the carrier member (111) respectively divide the four corners of the shell member (121) into four isosceles triangle spaces; The four magnet bodies (1221) are respectively located in the four isosceles triangle spaces and correspond to the shapes of the isosceles triangle spaces; The at least one moving pole piece (131) is located on at least one of the four first sides (11101) of the carrier member (111), and the at least one fixed pole piece (132) is located on at least one of the four sides of the shell member (121), and the positions of the at least one moving pole piece (131) and the at least one fixed pole piece (132) are opposite to each other.

9. The camera module according to any one of claims 1 to 8, characterized in that: The actuator (1) further comprises at least one elastic member (14), the at least one elastic member (14) being located at one end of the mover part (11) along the light entrance path, the at least one elastic member (14) being connected between the mover part (11) and the stator part (12); the at least one moving pole piece (131) being electrically connected to the stator part (12) via the at least one elastic member (14); and / or, The actuator (1) further comprises a base portion (15), wherein the base portion (15) is connected to the stator portion (12).

10. The camera module according to claim 1, characterized in that: The photosensitive component (3) comprises a circuit board (31) and a photosensitive element (32); the photosensitive element (32) is electrically connected to the circuit board (31); and the optical lens (2) is located on a photosensitive path of the photosensitive element (32).

11. An electronic device, characterized in that: The electronic device comprises the camera module according to any one of claims 1 to 10.

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