CN219181614U - Camera module and electronic equipment with same - Google Patents

Abstract

The utility model discloses a camera module and electronic equipment with the same, wherein the camera module comprises a base, a focusing assembly and an actuating assembly; the focusing assembly comprises a movable frame, a lens bracket and a first shape memory alloy wire, wherein the movable frame is arranged on the base and comprises a main body part and a frame edge arranged on the outer peripheral side of the main body part; the lens support is arranged in the main body part, a contact point is arranged on the lens support, the first shape memory alloy wire is wound on the lens support at the contact point, two ends of the first shape memory alloy wire are respectively connected with the movable frame, and two ends of the first shape memory alloy wire are positioned on one side of the contact point in the sliding direction of the lens support; the actuating assembly is connected with the base and is positioned at one side of the movable frame, at least two groups of actuating assemblies are arranged, the driving directions of the two groups of actuating assemblies are mutually perpendicular and perpendicular to the sliding direction of the lens bracket, and the actuating assemblies point to the main body part and the frame edge. The lens support can be driven to slide through the first shape memory alloy wire, and the structure is simple and the occupied space is small.

Description

Camera module and electronic equipment with same

Technical Field

The present utility model relates to the field of lens imaging optics, and in particular, to a camera module and an electronic device having the same.

Background

In recent years, high-performance lens modules have been mounted on portable terminals such as smartphones and tablet computers. The high performance lens module generally has an auto focus function (auto focus) and an optical anti-shake function (OIS: optical image stabilization). Optical anti-shake is the most widely accepted anti-shake technology, and the optical path of hand shake is compensated by a movable component, so that the effect of reducing photo blurring is realized. In general, a gyroscope in a lens module detects tiny movements, signals are transmitted to a microprocessor to immediately calculate displacement to be compensated, then the displacement is compensated according to the shaking direction and the displacement of a lens through a compensation lens group, and the position and the angle of the compensation lens group are correspondingly adjusted, so that an optical path is kept stable, and image blurring caused by vibration of a camera is effectively overcome.

In the related art, an actuator assembly consisting of a shape memory alloy wire (21) and two actuating bodies is shown in fig. 1, wherein each actuating body comprises a first connecting rod (22) and a second connecting rod (23) which are connected with each other, and the first connecting rod (22) and the second connecting rod (23) are arranged at a certain included angle; and one end of the first connecting rod () 22, which is away from the second connecting rod () 23, is connected with the shell (34), and one end of the second connecting rod (23), which is away from the first connecting rod (22), is connected with the lens component (20); the two actuating bodies are oppositely arranged, and two ends of the shape memory alloy wire (21) are respectively connected with the connecting parts of the first connecting rod (22) and the second connecting rod (23) on the two actuating bodies. The first connecting rod (22) and the second connecting rod (23) can be driven to rotate by contracting the shape memory alloy wire (21) so as to move the lens assembly (20). Generally, the actuator assembly is provided in three groups, respectively disposed at one side, above and below, of the lens assembly (20) to respectively drive the lens assembly (20) to move in the direction of the optical axis, to move left and right or up and down in the direction perpendicular to the optical axis. The above structure can well function as an anti-shake, but requires a space between the lens assembly (20) and the housing (34) for accommodating the actuating assembly and allowing the first link (22) and the second link (23) to rotate, which is disadvantageous for miniaturization of the camera module.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a camera module which can realize optical anti-shake and occupies a smaller volume.

The utility model also provides electronic equipment with the camera module.

According to an embodiment of the first aspect of the present utility model, a camera module includes: a base, a focusing assembly, and an actuation assembly; the focusing assembly comprises a movable frame, a lens bracket for mounting a lens and a first shape memory alloy wire, wherein the movable frame is slidably arranged on the base and comprises a main body part and a frame edge arranged on the outer periphery side of the main body part; the lens support is slidably arranged in the main body part, a contact point is arranged on the lens support, the first shape memory alloy wire is wound on the lens support at the contact point, two ends of the first shape memory alloy wire are respectively connected with the movable frame, and in the sliding direction of the lens support, the two ends of the first shape memory alloy wire are positioned on the same side of the contact point; the actuating components are connected to the base and face the movable frame, and the actuating components are at least provided with two groups, wherein the driving directions of the actuating components of at least two groups are mutually perpendicular, are perpendicular to the sliding direction of the lens bracket, and are respectively directed to the main body part and the frame edge.

The camera module according to the embodiment of the first aspect of the utility model has at least the following beneficial effects:

the two ends of the first shape memory alloy wire are arranged on the movable frame, and in the sliding direction of the lens support, the two ends of the first shape memory alloy wire are positioned on the same side of the contact point, so that the first shape memory alloy wire can drive the lens support to slide relative to the movable frame. When the first shape memory alloy wire is contracted, the first shape memory alloy wire can pull the lens bracket to slide towards directions close to two ends of the first shape memory alloy wire. Thereby driving the lens arranged on the lens bracket to move and playing a role in focusing. And the lens bracket can be driven to slide by winding the first shape memory alloy wire around the lens bracket, so that the structure is simple, the occupied space is small, the volume of the focusing assembly is reduced, and the miniaturization of the volume of the camera module is facilitated. By arranging at least two groups of actuating components, the driving directions of the two groups of actuating components are mutually perpendicular and perpendicular to the sliding direction of the lens bracket, so that the focusing component can move along two directions perpendicular to the sliding direction of the lens bracket relative to the base. Finally, the lens arranged on the lens bracket can move in three directions perpendicular to each other, thereby playing an anti-shake effect.

According to the camera module of some embodiments of the first aspect of the present utility model, the first shape memory alloy wire is provided with two, the contact points are provided with two places, and the contact points are distributed at intervals in the sliding direction of the lens support.

According to the camera module of some embodiments of the first aspect of the present utility model, the focusing assembly further includes a first connecting piece, the first connecting piece includes an elastic bending plate and two attaching plates, the two attaching plates are respectively connected to two ends of the elastic bending plate and are located at the same side of the elastic bending plate, and the two attaching plates are respectively connected to surfaces of the moving frame and the lens support.

According to the camera module of some embodiments of the first aspect of the present utility model, the actuating assembly includes a second shape memory alloy wire and two actuating plates, the two actuating plates are distributed at intervals in the sliding direction of the lens support, the first ends of the two actuating plates, which are close to each other, are connected to the base, the two ends of the second memory metal wire are respectively connected to the second ends of the two braking plates, which are far away from each other, and the second ends can be close to or far away from the first ends under the driving of the second shape memory alloy wire; the actuating components are spaced from and opposite to the moving frame, wherein the actuating plates in at least one group of actuating components face the side wall of the main body part, and the actuating plates in at least one group of actuating components face the side wall of the frame edge.

According to some embodiments of the first aspect of the present utility model, the actuating plate includes a driving portion, a first bending portion and a second bending portion, which are sequentially connected end to end, wherein a certain included angle is formed between the driving portion and the first bending portion, and between the first bending portion and the second bending portion, the second bending portion is connected to the base, and the driving portion is connected to the second shape memory alloy wire.

According to some embodiments of the first aspect of the present utility model, the camera module further includes an elastic buffer member, and the elastic buffer member is disposed at the second end and faces the moving frame.

According to the first aspect of the utility model, the camera module further comprises a second connecting piece, the second connecting piece comprises a first connecting plate and a second connecting plate which are connected with each other, the first connecting plate is located on one side of the second connecting plate, the length directions of the first connecting plate and the second connecting plate are intersected, the first connecting plate is connected to the base, and the second connecting plate is connected to the movable frame.

According to the camera module of some embodiments of the first aspect of the present utility model, the actuating assemblies are provided with four groups, wherein the second ends of two groups of actuating assemblies face the main body portion and are located at two sides of the main body portion, and the second ends of the other two groups of actuating assemblies face the frame edge and are located at two sides of the main body portion.

According to the camera module, the camera module comprises a base, a focusing assembly and an actuating assembly, wherein the base is provided with a lens, the lens is provided with a lens, and the lens is provided with a lens.

According to a second aspect of the present utility model, an electronic device includes a camera module according to the first aspect of the present utility model.

The electronic device according to some embodiments of the second aspect of the present utility model has at least the following advantages:

by applying the camera module of the embodiment of the first aspect to the electronic device, the electronic device has an optical anti-shake function, and is beneficial to miniaturization of the electronic device.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of a related art camera module;

fig. 2 is a schematic structural diagram of an image capturing module with a housing removed according to an embodiment of the present utility model;

FIG. 3 is a schematic view of the camera module of FIG. 2 with a portion of the base cut away;

FIG. 4 is a schematic view of a camera module with a housing removed according to another embodiment of the utility model;

FIG. 5 is an enlarged view of area A of FIG. 3;

FIG. 6 is a schematic structural view of a first connecting member according to an embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a second connector according to an embodiment of the present utility model.

Reference numerals:

a base 100; a connection block 110;

a focusing assembly 200; a moving frame 210; a main body 211; a rim 212; a lens holder 220; a bump 221; a first shape memory alloy wire 230; a first connector 240; a resilient bending plate 241; a bonding plate 242;

an actuation assembly 300; a second shape memory alloy wire 310; an actuation plate 320; a driving section 321; a first bending portion 322; a second bending portion 323; an elastic buffer 330;

a second connector 400; a first connection plate 410; and a second connection plate 420.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, left, right, front, rear, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, the description of the first and second is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implying the number of technical features indicated or the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

A camera module according to an embodiment of the first aspect of the present utility model is described below with reference to fig. 2 to 7.

Referring to fig. 2, the camera module of the present embodiment includes: a base 100, a focus assembly 200, and an actuation assembly 300; wherein, the focusing assembly 200 includes a moving frame 210, a lens holder 220 for mounting a lens, and a first shape memory alloy wire 230, the moving frame 210 being movably disposed on the base 100, the moving frame 210 including a main body portion 211 and a rim 212 disposed on an outer peripheral side of the main body portion 211; the lens holder 220 is slidably disposed in the main body 211, a contact point is disposed on the lens holder 220, the first shape memory alloy wire 230 is wound around the lens holder 220 at the contact point, two ends of the first shape memory alloy wire 230 are respectively connected to the moving frame 210, and two ends of the first shape memory alloy wire 230 are located at the same side of the contact point in the sliding direction of the lens holder 220; the actuating assembly 300 is connected to the base 100 and located at one side of the moving frame 210, and the actuating assembly 300 is at least provided with two groups, wherein the driving directions of the actuating assemblies 300 of at least two groups are perpendicular to each other and perpendicular to the sliding direction of the lens holder 220, and are respectively directed to the main body 211 and the rim 212.

It is understood that, after the lens is mounted on the lens holder 220, the optical axis of the lens is parallel to the sliding direction of the lens holder 220 with respect to the moving frame 210. By disposing the two ends of the first shape memory alloy wire 230 on the moving frame 210 and in the sliding direction of the lens holder 220, the two ends of the first shape memory alloy wire 230 are located at the same side of the contact point, so that the first shape memory alloy wire 230 can drive the lens holder 220 to slide relative to the moving frame 210. When the first shape memory alloy wire 230 is contracted, the first shape memory alloy wire 230 can pull the lens holder 220 to slide in a direction approaching both ends of the first shape memory alloy wire 230. Thereby driving the lens mounted on the lens holder 220 to move and playing a role of focusing. And the lens bracket 220 can be driven to slide by winding the lens bracket 220 through the first shape memory alloy wire 230, so that the structure is simple, the occupied space is small, the volume of the focusing assembly 200 is reduced, and the miniaturization of the volume of the camera module is facilitated. By providing at least two sets of actuating assemblies 300, the driving directions of the two sets of actuating assemblies 300 are perpendicular to each other and perpendicular to the sliding direction of the lens holder 220, so that the focusing assembly 200 can move relative to the base 100 along two directions perpendicular to the sliding direction of the lens holder 220. Finally, the lens mounted on the lens holder 220 can be moved in three directions perpendicular to each other, thereby playing an anti-shake effect.

It is to be understood that the focusing assembly 200 further includes a first connecting member 240, the first connecting member 240 includes an elastic bending plate 241 and two attaching plates 242, the two attaching plates 242 are respectively connected to two ends of the elastic bending plate 241 and located on the same side of the elastic bending plate 241, and the two attaching plates 242 are respectively connected to surfaces of the moving frame 210 and the lens holder 220. The moving frame 210 and the lens holder 220 are coupled to each other by the first coupling member 240, on the one hand, and the moving frame 210 and the lens holder 220 are movable with each other, on the other hand. Referring to fig. 3 and 6, specifically, in the moving direction of the lens holder 220, the elastic bending plate 241 of the first connector 240 is located at one side of the lens holder 220 and the moving frame 210 and is spaced apart from the lens holder 220 and the moving frame 210, and ends of the two attaching plates 242, which are away from the elastic bending plate 241, are bent in a direction approaching the lens holder 220 and the moving frame 210 and attached to the upper surfaces of the lens holder 220 and the moving frame 210, so that the lens holder 220 can be suspended in the moving frame 210. When the lens holder 220 moves relative to the moving frame 210 under the tensile force of the first shape memory alloy wire 230, the two attaching plates 242 move in opposite directions away from the ends of the elastic bending plate 241, and the elastic bending plate 241 is elastically deformed; when the first shape memory alloy wire 230 no longer applies a pulling force to the lens holder 220, the first connector 240 is restored to an original state, and the lens holder 220 can be driven to return to an original position. Specifically, the first connection member 240 is provided with four, which are respectively provided at four corners of the lens holder 220.

It is understood that the first shape memory alloy wire 230 is provided in two, the contact points are provided in two, and the contact points are spaced apart in the sliding direction of the lens holder 220. By providing the two first shape memory alloy wires 230, a tensile force in two directions can be provided to the lens holder 220, so that the lens holder 220 can freely move in the direction of the optical axis of the lens, and a flexible focusing effect is achieved.

In detail, referring to fig. 2 and 3, a protrusion 221 is provided at a central position of an upper surface of the lens holder 220, and a gap is provided between both ends of the protrusion 221 and the upper surface of the lens holder 220 in a sliding direction of the lens holder 220, and the first shape memory alloy wire 230 is caught in the gap, so that a position of the first shape memory alloy wire 230 can be defined, and the first shape memory alloy wire 230 is prevented from being separated from the lens holder 220. Both ends of the first shape memory alloy wire 230 are fixed on the moving frame 210, and the middle part bypasses the bump 221, so that the first shape memory alloy wire 230 is in a bent state; when the first shape memory alloy wire 230 is contracted, the lens holder 220 can move relative to the moving frame 210 such that the first shape memory alloy wire 230 tends to be in a straight state.

It can be understood that the actuating assembly 300 includes a second shape memory alloy wire 310 and two actuating plates 320, the two actuating plates 320 are distributed at intervals in the sliding direction of the lens holder 220, first ends of the two actuating plates 320, which are close to each other, are connected to the base 100, two ends of the second memory wire are respectively connected to second ends of the two actuating plates, which are far away from each other, and the second ends can be close to or far away from the first ends under the driving of the second shape memory alloy wire 310; the actuating assemblies 300 are spaced apart from and disposed opposite the moving frame 210, wherein the actuating plates 320 of at least one set of actuating assemblies 300 face the side walls of the main body 211, and the actuating plates 320 of at least one set of actuating assemblies 300 face the side walls of the rim 212. The second end portion can be close to or far from the first end portion by the second shape memory alloy wire 310, and the first end portion is connected with the base 100, so that the first end portion can be close to or far from the base 100. Specifically, when the second shape memory alloy wire 310 contracts, the first end portion is far away from the base 100 and can move to be attached to the side wall of the moving frame 210, and the second shape memory alloy wire 310 continues to contract, and the first end portion can drive the moving frame 210 to move in a direction far away from the base 100; when the second shape memory alloy wire 310 is elongated, the first end portion is close to the base 100 and can be moved away from the sidewall of the moving frame 210, in the course of which the moving frame 210 is moved in a direction to be close to the base 100. Referring to fig. 3 and 5, in particular, the body portion 211 and the rim 212 cooperate with the base 100 to form a placement groove in which all the actuating assemblies 300 are disposed. The base 100 is provided with a connection block 110, the connection block 110 is located at one side of the main body 211, and the actuation plates 320 are connected to the connection block 110. The actuating assemblies 300 are spaced apart from and disposed opposite the moving frame 210 such that the driving of the moving frame 210 by each actuating assembly 300 is independent, such that the movements of the moving frame 210 in both directions are non-interfering.

Referring to fig. 5, specifically, the actuating plate 320 includes a driving portion 321, a first bending portion 322 and a second bending portion 323, which are sequentially connected end to end, wherein a certain included angle is formed between the driving portion 321 and the first bending portion 322, and between the first bending portion 322 and the second bending portion 323, the second bending portion 323 is connected to the base 100, and the driving portion 321 is connected to the second shape memory alloy wire 310. It will be appreciated that the actuation plate 320 has a first end located on the second connection plate 420 and a second end located on the drive portion 321. Specifically, the actuating assembly 300 further includes an elastic buffer 330, where the elastic buffer 330 is disposed at the second end and faces the moving frame 210. By providing the elastic buffer 330, the driving portion 321 can be made to play a role of buffering when it is moved to be attached to the moving frame 210. When the moving frame 210 needs to move in two directions relative to the base 100, the driving portion 321 slides relative to the side wall of the moving frame 210, and by providing the elastic buffer 330, the friction force applied to the moving frame 210 can be reduced, so that on one hand, the damage to the side wall of the moving frame 210 is reduced, and on the other hand, the moving frame 210 moves more flexibly. Specifically, the elastic buffer 330 is made of polyoxymethylene.

It can be appreciated that the camera module according to some embodiments of the first aspect of the present utility model further includes a second connecting member 400, the second connecting member 400 includes two first connecting plates 410 and a second connecting plate 420 connected to each other, the first connecting plate 410 is located at one side of the second connecting plate 420, the first connecting plate 410 and the second connecting plate 420 intersect in a length direction, the first connecting plate 410 is connected to the base 100, and the second connecting plate 420 is connected to the moving frame 210. The second connecting piece 400 is connected to the base 100 and the moving frame 210 respectively, so as to suspend the moving frame 210 on the base 100. Referring to fig. 5 and 7, in detail, the second connection plate 420 is disposed at one side of the moving frame 210, and an end of the second connection plate 420 facing away from the first connection plate 410 is bent toward the moving frame 210 and is attached to a surface of the moving frame 210; the end of the first connection plate 410 facing away from the second connection plate 420 is connected to the base 100. When the moving frame 210 moves left and right relative to the base 100, the second connection plate 420 is elastically deformed; when the moving frame 210 moves up and down with respect to the base 100, the first connection plate 410 is elastically deformed.

Specifically, the actuating assemblies 300 are provided with four groups, wherein the second ends of two groups of actuating assemblies 300 face the main body 211 and are located at two sides of the main body 211, and the second ends of the other two groups of actuating assemblies 300 face the rim 212 and are located at two sides of the main body 211.

In detail, referring to fig. 2 and 4, the longer the second shape memory alloy wire 310 is, the longer the actuating assembly 300 drives the moving frame 210 to move, and the better the anti-shake effect of the camera module is. The anti-shake effect may be enhanced by lengthening the second shape memory alloy wire 310 and the driving plate.

It will be appreciated that the camera module according to some embodiments of the first aspect of the present utility model further includes a housing, wherein the housing is covered on the base 100, a receiving cavity is formed between the housing and the base 100, and the focusing assembly 200 and the actuating assembly 300 are disposed in the receiving cavity. The shell plays a role in dust prevention and protection.

The following describes an electronic device according to some embodiments of the second aspect of the present utility model, including the camera module according to the embodiment of the first aspect. By applying the camera module of the embodiment of the first aspect to the electronic device, the electronic device has an optical anti-shake function, and is beneficial to miniaturization of the electronic device.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A camera module, comprising:

a base;

the focusing assembly comprises a movable frame, a lens bracket for mounting a lens and a first shape memory alloy wire, wherein the movable frame is slidably arranged on the base and comprises a main body part and a frame edge arranged on the outer periphery side of the main body part; the lens support is slidably arranged in the main body part, a contact point is arranged on the lens support, the first shape memory alloy wire is wound on the lens support at the contact point, two ends of the first shape memory alloy wire are respectively connected with the movable frame, and two ends of the first shape memory alloy wire are positioned on the same side of the contact point in the sliding direction of the lens support;

the actuating assembly is connected to the base and faces the movable frame, and at least two groups of actuating assemblies are arranged, wherein the driving directions of at least two groups of actuating assemblies are mutually perpendicular and respectively point to the main body part and the frame edge.

2. The camera module according to claim 1, wherein the first shape memory alloy wire is provided in two, the contact points are provided in two places, and the contact points are spaced apart in a sliding direction of the lens holder.

3. The camera module of claim 1, wherein the focusing assembly further comprises a first connecting piece, the first connecting piece comprises an elastic bending plate and two attaching plates, the two attaching plates are respectively connected to two ends of the elastic bending plate and are located on the same side of the elastic bending plate, and the two attaching plates are respectively connected to the surfaces of the movable frame and the lens support.

4. A camera module according to any one of claims 1 to 3, wherein the actuating assembly comprises a second shape memory alloy wire and two actuating plates, the two actuating plates are distributed at intervals in the sliding direction of the lens support, the two actuating plates comprise a first end part close to each other and a second end part far away from each other, the first end part is connected with the base, the second end part is connected with the end part of the second shape memory alloy wire, and the second end part can be close to or far away from the moving frame under the driving of the second shape memory alloy wire; the actuating components are spaced from and opposite to the moving frame, wherein the actuating plates in one group of actuating components face the side wall of the main body part, and the actuating plates in one group of actuating components face the side wall of the frame edge.

5. The camera module of claim 4, wherein the actuation plate comprises a driving portion, a first bending portion and a second bending portion connected end to end, and an included angle is formed between the driving portion and the first bending portion, and between the first bending portion and the second bending portion.

6. The camera module of claim 4, wherein the actuation assembly further comprises a resilient buffer disposed at the second end and facing the moving frame.

7. The camera module of claim 4, further comprising a second connector, wherein the second connector comprises a first connecting plate and a second connecting plate that are connected to each other, the first connecting plate is located at one side of the second connecting plate, the first connecting plate and the second connecting plate intersect in a length direction, the first connecting plate is connected to the base, and the second connecting plate is connected to the moving frame.

8. The camera module of claim 7, wherein the actuating assemblies are provided in four groups, wherein two groups of the second ends of the actuating assemblies face the main body portion and are located on both sides of the main body portion, and two other groups of the second ends of the actuating assemblies face the rim and are located on both sides of the main body portion.

9. A camera module according to any one of claims 1 to 3, further comprising a housing, the housing being covered on the base, a receiving cavity being formed between the housing and the base, the focusing assembly and the actuating assembly both being disposed within the receiving cavity.

10. An electronic device comprising a camera module according to any one of claims 1 to 9.

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