Camera module and electronic equipment

Abstract

The utility model discloses a camera module and electronic equipment, and relates to the technical field of camera devices. The camera module comprises a shell, a lens unit and a driving unit, wherein the lens unit is at least partially arranged in the shell; the driving unit comprises a driving assembly and a hanging assembly, one end of the hanging assembly is connected with the lens unit, and the other end of the hanging assembly is fixed with the driving assembly; wherein the driving assembly comprises a micro-electro-mechanical driving piece, the micro-electro-mechanical driving piece is used for driving the hanging assembly to move, and the moving hanging assembly pulls the lens unit to move.

Description

Technical Field

[0001] The present application belongs to the technical field of camera devices, and specifically relates to a camera module and electronic equipment. Background Art

[0002] Cameras have become an indispensable feature of electronic devices and are increasingly used in daily life, leading to higher and higher demands for camera quality. As user demands for camera quality increase, camera modules are equipped with magnets and coils. The interaction between the magnets and the energized coils drives the lens unit to achieve optical image stabilization. When the camera module is not operating, the unenergized coils and magnets lack the magnetic force to secure the lens unit, making it prone to collisions with other components.

[0003] Therefore, the above-mentioned problem causes the camera module in the related art to easily collide with other components when it is not working, causing abnormal noise. Utility Model Content

[0004] The present application aims to provide a camera module and an electronic device, which at least solves the technical problem in the related art that when the camera module is not working, the lens unit is prone to collide with other components, causing abnormal noise.

[0005] In a first aspect, an embodiment of the present application provides a camera module, comprising:

[0006] case;

[0007] a lens unit, at least partially disposed within the housing;

[0008] The driving unit includes a driving component and a hanging component. One end of the hanging component is connected to the lens unit, and the other end of the hanging component is fixed to the driving component. The driving component includes a micro-electromechanical driving part, which is used to drive the hanging component to move. The moving hanging component pulls the lens unit to move.

[0009] In a second aspect, an embodiment of the present application provides an electronic device, comprising any camera module provided in the first aspect.

[0010] In an embodiment of the present application, a driving component and a hanging component are provided so that the driving component can drive the hanging component to move, and the moving hanging component pulls the lens unit to move, thereby realizing optical image stabilization; by providing a micro-electromechanical driving component to drive the hanging component to move, the coil and the electromagnetic component are eliminated, thereby avoiding electromagnetic interference caused by the coil and the electromagnetic component; because the hanging component drags the lens unit, when the camera module is not powered on, the lens unit can remain relatively stationary with respect to the housing, thereby avoiding collision between the lens unit and other components and causing abnormal noise.

[0011] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0013] Figure 1 This is one of the planar structural diagrams of an embodiment of a camera module according to the present application;

[0014] Figure 2 This is one of the partial cross-sectional structural schematic diagrams of an embodiment of a camera module according to the present application;

[0015] Figure 3 This is a second partial cross-sectional structural diagram of an embodiment of a camera module according to the present application;

[0016] Figure 4 This is a third partial cross-sectional structural diagram of an embodiment of a camera module according to the present application;

[0017] Figure 5 This is the second planar structural diagram of the camera module according to the embodiment of the present application.

[0018] Description of reference numerals:

[0019] 10. Camera module;

[0020] 1. Shell;

[0021] 2. Lens unit; 21. Bracket; 22. Optical lens; 23. Intersecting edge;

[0022] 3. Drive unit; 31. Reversing element; 32. Drive assembly; 321. MEMS drive element; 322. Elastic deformation element; 323. Sensor; 33. Hook assembly; 331. Pull rope; 3311. First portion; 3312. Second portion; 332. Winding element; 3321. Inner wall; 3322. Outer wall; 333. Blocking element;

[0023] L, optical axis. DETAILED DESCRIPTION

[0024] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0026] 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 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 application and simplifying the description, and do not indicate or imply 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 a limitation on the present application.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0028] Surface combination Figures 1 to 5 The camera module 10 according to an embodiment of the present application is described.

[0029] See also Figures 1 to 3The embodiment of the present application provides a camera module 10, which includes a housing 1, a lens unit 2 and a drive unit 3. The lens unit 2 is at least partially arranged in the housing 1; the drive unit 3 includes a drive component 32 and a hanging component 33, one end of the hanging component 33 is connected to the lens unit 2, and the other end of the hanging component 33 is fixed to the drive component 32; wherein, the drive component 32 includes a micro-electromechanical drive component 321, and the micro-electromechanical drive component 321 is used to drive the hanging component 33 to move, and the moving hanging component 33 pulls the lens unit 2 to move.

[0030] Those skilled in the art will appreciate that the camera module 10 may further include an image sensor, which is disposed on one side of the lens assembly. The image sensor may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The image sensor is used to convert optical signals into electrical signals to facilitate the imaging requirements of the camera module 10.

[0031] The lens unit 2 may include at least two optical lenses 22, and each optical lens 22 may be arranged in sequence along the desired optical axis L. The number of optical lenses 22 may be flexibly set, for example, the number of optical lenses 22 may be two, three, four or even more, and the embodiments of the present application do not limit this. Light enters the lens unit 2 from one side of the lens unit 2 and passes through multiple optical lenses 22 to reach the image sensor. The optical lens 22 may be a convex lens, a concave lens, a filter, etc. By combining different optical lenses 22, the image generated by the image sensor can meet user needs. The optical axis L of the optical lens 22 may be along the direction in which the light is emitted from the optical lens 22 to the image sensor, that is, the direction X from the optical lens 22 closest to the image sensor to the image sensor.

[0032] The lens unit 2 may further include a bracket 21 for supporting the optical lens 22. The bracket 21 may be fully or partially housed within the housing 1. A mounting assembly 33 may be connected to the bracket 21. Movement of the mounting assembly 33 drives movement of the bracket 21, thereby enabling movement of the optical lens 22 relative to the image sensor, thereby achieving optical image stabilization (OIS) of the camera module 10.

[0033] The driving unit 3 is used to drive the lens unit 2 to move relative to the image sensor. The MEMS driver 321 can be a MEMS driver based on a micro-electro-mechanical system (MEMS) to reduce the space occupied by the MEMS driver 321.

[0034] Exemplarily, the drive component 32 is arranged on the peripheral side of the lens unit 2, and the drive component 32 drives the hanging component 33 to be wound on the reel. When the drive component 32 unwinds the hanging component 33, the lens unit 2 moves in the direction away from the drive component 32; when the drive component 32 rewinds the hanging component 33, the lens unit 2 moves in the direction close to the drive component 32.

[0035] The camera module 10 may include multiple driving units 3, and the multiple driving units 3 are respectively connected to the lens unit 2, so that the lens unit 2 can be pulled to move by the multiple driving units 3, so that the lens unit 2 can be displaced in different directions relative to the housing 1.

[0036] In the present application, a driving component 32 and a hanging component 33 are provided so that the driving component 32 can drive the hanging component 33 to move, and the moving hanging component 33 pulls the lens unit 2 to move, thereby realizing optical image stabilization; a micro-electromechanical driving component 321 is provided to drive the hanging component 33 to move, eliminating the coil and electromagnetic components, thereby avoiding electromagnetic interference caused by the coil and electromagnetic components; since the hanging component 33 drags the lens unit 2, when the camera module 10 is not powered on, the lens unit 2 can remain relatively stationary with respect to the housing 1, thereby avoiding collision between the lens unit 2 and other components and causing abnormal noise.

[0037] In some embodiments, the driving unit 3 also includes a reversing member 31, which is installed on the housing 1, and the driving assembly 32 is spaced apart from the reversing member 31. One end of the hanging assembly 33 is wrapped around the reversing member 31 and connected to the lens unit 2, and the other end of the hanging assembly 33 is fixed to the driving assembly 32; wherein, the driving assembly 32 is used to drive the hanging assembly 33 to move around the reversing member 31, and the moving hanging assembly 33 pulls the lens unit 2 to move.

[0038] The reversing member 31 is used to change the extension direction of the hanging assembly 33. The reversing member 31 can be a fixed pulley, a roller, etc. The reversing member 31 is mounted on the housing 1 so that the relative position of the reversing member 31 and the housing 1 is fixed. All or part of the hanging assembly 33 is flexible, so that the hanging assembly 33 can be arranged around the reversing member 31. The hanging assembly 33 can be arranged around part or all of the periphery of the reversing member 31, or it can be wound around the reversing member 31 one or more times. Optionally, the hanging assembly 33 extends from the lens unit 2 to the reversing member 31, surrounds part of the periphery of the reversing member 31, and then extends from the reversing member 31 in a direction close to the drive unit 3.

[0039] The reversing member 31 can be disposed on a peripheral side of the lens unit 2, and the driving assembly 32 and the reversing member 31 can be spaced apart along the optical axis L of the optical lens 22. The hanging assembly 33 can include a first portion 3311 and a second portion 3312 connected to each other. The first portion 3311 extends perpendicular to the optical axis L to the reversing member 31, and the second portion 3312 extends along the optical axis L from the reversing member 31 to the driving assembly 32. The driving assembly 32 can drive the hanging assembly 33 to move linearly or reel, so that the hanging assembly 33 can pull the lens unit 2 to move.

[0040] By installing a reversing member 31 on the housing 1 and wrapping one end of the attachment assembly 33 around the reversing member 31, the displacement direction of the attachment assembly 33 is fixed, preventing the attachment assembly 33 from moving in an undesirable direction. The reversing member 31 can also change the extension direction of the attachment assembly 33, enriching the relative configurations that can be set between the lens unit 2 and the drive assembly 32.

[0041] In some embodiments, the driving component 32 also includes an elastic deformation part 322 and a sensor 323, the micro-electromechanical driving component 321 is connected to the hanging component 33, the elastic deformation part 322 is linked to the hanging component 33, and the sensor 323 is connected to the elastic deformation part 322; wherein, the elastic deformation part 322 is used to elastically deform following the movement of the hanging component 33, and the sensor 323 is used to detect the deformation amount of the elastic deformation part 322.

[0042] The elastic deformable member 322 is elastically deformable. It can be connected to the mounting assembly 33. When the mounting assembly 33 moves, the elastic deformable member 322 also deforms. A sensor 323 can detect the deformation of the elastic deformable member 322. This deformation can be used to analyze the displacement of the mounting assembly 33, thereby achieving precise control of the movement of the lens unit 2. The sensor 323 can be a dynamometer, a strain gauge, or the like.

[0043] In some embodiments, the hanging assembly 33 includes a pull rope 331 and a winding member 332, the micro-electromechanical driving member 321 is connected to the winding member 332, one end of the pull rope 331 is wound around the reversing member 31, and the other end of the pull rope 331 is fixed to the winding member 332; wherein, the micro-electromechanical driving member 321 is used to drive the winding member 332 to rotate, and the rotating winding member 332 reels or unreels the pull rope 331.

[0044] The pull cords 331 may be made of a metal material and have a certain degree of rigidity, so that the pull cords 331 can stably exert a pulling force on the lens unit 2. In the absence of external forces, the pull cords 331 can maintain relative stability between the lens unit 2 and the housing 1. Optionally, the pull cords 331 may be made of tungsten steel.

[0045] The winding member 332 can be a fixed pulley, roller, or the like. The reversing member 31 and the winding member 332 can be arranged along the optical axis L. The pull cord 331 includes the aforementioned connected first portion 3311 and second portion 3312. The first portion 3311 extends perpendicularly to the optical axis L to the reversing member 31. The second portion 3312 extends along the optical axis L from the side of the reversing member 31 facing away from the lens unit 2 to the side of the winding member 332 near the lens unit 2, where it is wound around the winding member 332. The micro-electromechanical drive member 321 can drive the winding member 332 to rotate, thereby reeling or unreeling the pull cord 331. The winding member 332 facilitates fixing the direction of movement of the pull cord 331 and can also store a portion of the pull cord 331.

[0046] For example, the driving component 32 drives the winding member 332 to rotate clockwise, and the winding member 332 reels the pull rope 331, so that the lens unit 2 moves toward the direction of the reversing member 31 around which the hanging component 33 is wound; the driving component 32 drives the winding member 332 to rotate counterclockwise, and the winding member 332 unwinds the hanging component 33, so that the lens unit 2 moves toward the direction of the reversing member 31 away from which the hanging component 33 is wound.

[0047] In some embodiments, one end of the elastic deformable member 322 is connected to the winding member 332 , and the elastic deformable member 322 is configured to elastically deform following the rotation of the winding member 332 .

[0048] As the winding member 332 rotates to reel in or unreel the drawstring 331, the elastic deformable member 322 rotates with it, causing a recoverable deformation. By detecting the deformation of the elastic deformable member 322, the reeled or unreeled length of the drawstring 331, i.e., the travel length of the drawstring 331, can be analyzed.

[0049] In some embodiments, the elastic deformation member 322 is a clockwork spring, one end of which is fixed to the housing 1 , and the other end of which is connected to the winding member 332 .

[0050] The clockwork spring is a spring whose spiral wire lies within a plane. One end of the clockwork spring can be fixed to the housing 1, while the other end is connected to the winding member 332. When the winding member 332 rotates, the clockwork spring is subjected to a bending moment upon the application of torque, resulting in elastic bending deformation. The clockwork spring twists within its own plane, indicating that the clockwork spring is tightening or loosening. Sensor 323 is connected to any position of the clockwork spring to detect its deformation. Optionally, sensor 323 is connected to the end of the clockwork spring facing away from the winding member 332.

[0051] In some embodiments, the winding member 332 is a hollow member, comprising an inner wall 3321 and an outer wall 3322 sleeved on the outer periphery of the inner wall 3321 , one end of the elastic deformation member 322 is connected to the inner wall 3321 , and the pull rope 331 is wound on the outer wall 3322 .

[0052] The elastic deformable member 322 and the pull rope 331 are respectively connected to different side walls of the winding member 332 to reduce or avoid interference between the two.

[0053] See also Figure 4 In some embodiments, the hook assembly 33 includes a pull rope 331 and a blocking member 333. One end of the pull rope 331 is wound around the reversing member 31, and the other end of the pull rope 331 is connected to the elastic deformation member 322. The elastic deformation member 322 is fixed to the housing 1. The blocking member 333 is connected to the micro-electromechanical driver 321, and the elastic deformation member 322 is disposed between the blocking member 333 and the micro-electromechanical driver 321.

[0054] The micro-electromechanical driving member 321 is used to drive the blocking member 333 to move. The moving blocking member 333 compresses or stretches the elastic deformable member 322 , and the deformed elastic deformable member 322 drives the pull rope 331 to move.

[0055] The elastic deformable member 322 may be a coil spring. When the coil spring stretches, the lens unit 2 moves away from the reversing member 31 around which the hook assembly 33 is wound. When the coil spring contracts, the lens unit 2 moves toward the reversing member 31 around which the hook assembly 33 is wound. The micro-electromechanical drive 321 drives the blocking member 333 to move toward the elastic deformable member 322, thereby compressing the coil spring, or away from the elastic deformable member 322, thereby stretching the coil spring under the action of the elastic restoring force.

[0056] The sensor 323 can detect the compression or extension length of the coil spring, thereby analyzing the distance the pull cord 331 drives the lens unit 2 to move.

[0057] Please refer again Figure 1 In some embodiments, there are multiple driving units 3, and the hanging components 33 of the multiple driving components 32 are connected to the lens unit 2 in pairs. The multiple driving components 32 are used to drive the lens unit 2 to move in a first reference plane, and the first reference plane is perpendicular to the optical axis L of the lens unit 2.

[0058] The connection points between the attachment assemblies 33 of the multiple drive assemblies 32 and the lens unit 2 can be located within the first reference plane. Two drive assemblies 32 relatively connected to the lens unit 2 can control the movement of the lens unit 2 in the direction of the line connecting the two drive assemblies 32. When the lens unit 2 is moved, the attachment assemblies 33 of one drive assembly 32 move toward the wound reversing member 31, while the attachment assemblies 33 of the other drive assembly 32, driven by the lens unit 2, move away from the wound reversing member 31, thereby maintaining the movement of the lens unit 2 within the first reference plane. Arranging the attachment assemblies 33 of the multiple drive assemblies 32, each of which is relatively connected to the lens unit 2, facilitates the movement of the lens unit 2 within the first reference plane.

[0059] In some embodiments, the cross-section of the lens unit 2 along the first reference plane is polygonal, and the hanging assembly 33 is connected to the intersecting edges 23 of the two side walls of the lens unit 2 .

[0060] Optionally, the polygon is a rectangle having four sides, which correspond to the four side walls of the lens unit 2 respectively. The four side walls intersect in pairs to obtain four intersecting edges 23. The hanging assembly 33 is connected to the intersecting edges 23 of the two side walls of the lens unit 2, which is conducive to the position of the hanging assembly 33 to keep the lens unit 2 and the shell 1 relatively stable, and avoid shaking of the lens unit 2 and generating abnormal noise.

[0061] See also Figure 5 For example, when driving along the illustrated direction Y is required, the driving component 32 drives the hanging component 33 to move relative to the reversing member 31a and the reversing member 31b, thereby pulling the lens unit 2 along the illustrated direction Y, and the driving component 32 corresponding to the reversing member 31c and the reversing member 31d is closed, and the hanging component 33 corresponding to the reversing member 31c and the reversing member 31d moves relative to the reversing member 31c and the reversing member 31d driven by the lens unit 2.

[0062] In some embodiments, the camera module 10 further includes a control unit, which is connected to the micro-electromechanical actuator 321 and the sensor 323. The control unit is configured to calculate the actual displacement of the attachment assembly 33 based on the deformation detected by the sensor 323. The control unit compares the actual displacement with the target displacement to determine whether the lens unit 2 has reached the specified position, and then continues to control the micro-electromechanical actuator 321 to drive the attachment assembly 33 to move, thereby achieving closed-loop drive.

[0063] The present application also discloses an electronic device including the camera module 10 of any of the above embodiments. Application of the camera module 10 of any of the above embodiments to the electronic device can improve the imaging quality of the camera module 10 in harsh environments by avoiding or reducing deformation of the camera module 10 under the influence of pressure differentials.

[0064] The electronic devices disclosed in the embodiments of the present application may be smart phones, tablet computers, e-book readers, wearable devices (such as smart watches), electronic game consoles, and other devices. The embodiments of the present application do not limit the specific types of electronic devices.

[0065] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A camera module, characterized in that: include: case; a lens unit, at least partially disposed within the housing; The drive unit includes a drive component and a hanging component, one end of the hanging component is connected to the lens unit, and the other end of the hanging component is fixed to the drive component. The drive component includes a micro-electromechanical driver, and the micro-electromechanical driver is used to drive the hanging component to move. The moving hanging component drives the lens unit to move.

2. The camera module according to claim 1, wherein: The drive unit further includes a reversing member mounted on the housing, the drive assembly and the reversing member are spaced apart, one end of the hanging assembly is wound around the reversing member and connected to the lens unit, and the other end of the hanging assembly is fixed to the drive assembly; The driving assembly is used to drive the hanging assembly to move around the reversing member, and the moving hanging assembly pulls the lens unit to move.

3. The camera module according to claim 2, wherein: The driving assembly further includes an elastic deformation member and a sensor, the micro-electromechanical driving member is connected to the hanging assembly, the elastic deformation member is linked to the hanging assembly, and the sensor is connected to the elastic deformation member; The elastic deformation member is used to elastically deform following the movement of the hanging assembly, and the sensor is used to detect the deformation amount of the elastic deformation member.

4. The camera module according to claim 3, wherein: The hook assembly includes a pull rope and a winding member, the micro-electromechanical drive member is connected to the winding member, one end of the pull rope is wound around the reversing member, and the other end of the pull rope is fixed to the winding member; The micro-electromechanical drive component is used to drive the winding component to rotate, and the rotating winding component reels or unreels the pull rope.

5. The camera module according to claim 4, wherein: One end of the elastic deformation member is connected to the winding member, and the elastic deformation member is used to elastically deform following the rotation of the winding member.

6. The camera module according to claim 5, wherein: The elastic deformation member is a spring, one end of the spring is fixed to the housing, and the other end of the spring is connected to the winding member.

7. The camera module according to claim 3, wherein: The hook assembly includes a pull rope and a blocking member, one end of the pull rope is wound around the reversing member, the other end of the pull rope is connected to the elastic deformation member, the elastic deformation member is fixed to the housing, the blocking member is connected to the micro-electromechanical driving member, and the elastic deformation member is arranged between the blocking member and the micro-electromechanical driving member; The micro-electromechanical driving component is used to drive the blocking component to move, and the moving blocking component compresses or stretches the elastic deformable component, and the deformed elastic deformable component drives the pull rope to move.

8. The camera module according to claim 1, wherein: There are multiple driving units, and the hanging components of the multiple driving components are connected to the lens units in pairs. The multiple driving components are used to drive the lens unit to move in a first reference plane, and the first reference plane is perpendicular to the optical axis of the lens unit.

9. The camera module according to claim 8, wherein: The cross section of the lens unit along the first reference plane is polygonal, and the hanging assembly is connected to the intersection edges of the two side walls of the lens unit.

10. An electronic device, characterized in that: include: The camera module according to any one of claims 1 to 9.

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