CN114257710A

CN114257710A - Optical anti-shake structure and camera module and terminal equipment with same

Info

Publication number: CN114257710A
Application number: CN202011010248.8A
Authority: CN
Inventors: 张亮明; 王辉
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2022-03-29
Anticipated expiration: 2040-09-23
Also published as: CN114257710B

Abstract

The application discloses optics anti-shake structure and have its camera module, terminal equipment, optics anti-shake structure includes: the image sensor comprises a carrier, a first image sensor and a second image sensor, wherein the carrier comprises a base body part and a moving part, the moving part is provided with an accommodating area for accommodating the image sensor, and the moving part is movably arranged relative to the base body part; the shape memory part is connected with the base part and the moving part, and the moving part moves relative to the base part when the shape memory part is deformed in a stretching and contracting mode. The application provides an optics anti-shake structure and have its camera module, terminal equipment, flexible deformation through shape memory spare drives image sensor motion, has not only realized the function of optics anti-shake, has improved the imaging quality of camera module under the motion state and the imaging quality when shooing the motion state object, can also avoid producing magnetic interference each other with other parts that have the magnet, ensures the performance of optics anti-shake structure.

Description

Optical anti-shake structure and camera module and terminal equipment with same

Technical Field

The invention relates to the technical field of camera equipment, in particular to an optical anti-shake structure, a camera module with the optical anti-shake structure and terminal equipment with the optical anti-shake structure.

Background

The existing mobile phone is generally provided with one or more camera modules, the camera modules are provided with optical anti-shake structures, and the optical anti-shake structures compensate the deviation of an imaging light path caused by hand shake when a user holds the mobile phone to shoot, so that the blurring degree of photos is obviously reduced.

At present, the optical anti-shake structure generally includes a driving magnet and a coil, and the electromagnetic driving cooperation through the driving magnet and the coil enables the coil to drive the image sensor to move, thereby realizing optical anti-shake. However, when the optical anti-shake structure is assembled in a mobile phone, the driving magnet in the optical anti-shake structure and other components with magnets generate magnetic interference with each other, thereby affecting the anti-shake performance.

Disclosure of Invention

In view of the above-mentioned defects or shortcomings in the prior art, it is desirable to provide an optical anti-shake structure, a camera module and a terminal device having the same.

In a first aspect, the present application provides an optical anti-shake structure, comprising:

the image sensor comprises a carrier, a first image sensor and a second image sensor, wherein the carrier comprises a base body part and a moving part, the moving part is provided with an accommodating area for accommodating the image sensor, and the moving part is movably arranged relative to the base body part;

the shape memory part is connected with the base part and the moving part, and the moving part moves relative to the base part when the shape memory part is deformed in a stretching and contracting mode.

Further, the shape memory part comprises a first shape memory part, the first shape memory part is connected with the base body part and the moving part, and when the first shape memory part is deformed in a stretching and contracting mode, the moving part moves in a translation mode along the target direction relative to the base body part.

Further, the target direction includes a first direction and/or a second direction, when the target direction includes the first direction and the second direction, the number of the first shape memory members is two or more, wherein when a part of the number of the first shape memory members is deformed telescopically, the moving portion moves in translation relative to the base portion along the first direction, and when another part of the number of the first shape memory members is deformed telescopically, the moving portion moves in translation relative to the base portion along the second direction, and the first direction and the second direction are perpendicular.

Further, the moving portion is provided with first shape memory members on both sides in the target direction.

Further, the moving part has at least one first connection position, the base part has at least one second connection position, and a first shape memory member is connected to the at least one first connection position and the at least one second connection position;

and the figure formed by connecting the at least one first connecting position and the at least one second connecting position is a symmetrical figure, and the symmetry axis of the symmetrical figure is parallel to the target direction.

Further, the shape memory member includes a second shape memory member connecting the base portion and the moving portion, and the moving portion rotates about the third direction with respect to the base portion when the second shape memory member is deformed telescopically.

Further, a second shape memory member is circumferentially disposed around at least a portion of the moving portion.

Furthermore, the accommodating area is an accommodating groove arranged in the moving part, and the accommodating groove is obliquely arranged opposite to the moving part along the rotating direction of the moving part under the action of the second shape memory component.

Furthermore, an elastic part is connected between the moving part and the base body part, and the elastic part stores elastic potential energy when the moving part moves and the stored elastic potential energy is used for driving the moving part to reset.

Further, the carrier is a flexible circuit board, and the flexible circuit board includes:

a first portion forming a moving part;

a second portion surrounding the outer periphery of the first portion, the second portion forming a base portion;

the connecting part is arranged in a bending mode and is connected with the first part and the second part, and the at least one connecting part forms an elastic part.

Further, still include the mount pad, the mount pad is located the carrier and keeps away from the one side of holding the district, and the carrier is installed in the mount pad, is equipped with a plurality of support piece between mount pad and the motion portion, and a plurality of support piece support the cooperation with the motion portion, and wherein a plurality of support piece nonparallel sets up and keep away from the one end parallel and level setting of mount pad.

Furthermore, support piece is the ball, and the one end that the mount pad is close to the motion portion or the one end that the motion portion is close to the mount pad is equipped with a plurality of constant head tanks, and a plurality of balls are installed respectively in a plurality of constant head tanks, ball and the constant head tank location fit that corresponds.

In a second aspect, the present application further provides a camera module including an optical anti-shake structure.

In a third aspect, the present application further provides a terminal device, which includes a camera module.

The application provides an optics anti-shake structure and have its camera module, terminal equipment, flexible deformation through shape memory spare drives image sensor motion, has not only realized the function of optics anti-shake, has improved the imaging quality of camera module under the motion state and the imaging quality when shooing the motion state object, can also avoid producing magnetic interference each other with other parts that have the magnet, ensures the performance of optics anti-shake structure. Simultaneously, the effort that the shape memory spare produced when flexible deformation is great in order to drive the image sensor of great weight and move, and then can realize optics anti-shake in the camera module of high pixel and big weight, has enlarged the application scope of optics anti-shake structure, has improved the practicality of optics anti-shake structure.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 is a schematic structural perspective view of a camera module according to an embodiment of the present disclosure;

fig. 2 is an exploded schematic view of a camera module according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a carrier provided in an embodiment of the present application;

FIG. 4 is a schematic view of a first shape memory member and a carrier according to an embodiment of the present disclosure;

fig. 5 is a schematic view of the second shape memory element and the carrier according to the embodiment of the present application.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

Referring to fig. 1 to 3, an embodiment of the present application provides an optical anti-shake structure, including:

a carrier 100, wherein the carrier 100 includes a base portion 110 and a moving portion 120, the moving portion 120 has a receiving area for receiving the image sensor 600, and the moving portion 120 is movably disposed relative to the base portion 110;

and a shape memory member connecting the base portion 110 and the moving portion 120, wherein the moving portion 120 moves relative to the base portion 110 when the shape memory member is deformed in a telescopic manner.

In the present embodiment, the moving part 120 has a receiving area for receiving the image sensor 600 in the camera module. The motion portion 120 is movable relative to the base portion 110, and drives the image sensor 600 to move through the motion portion 120 to compensate for the deviation of the imaging light path caused by reasons such as shaking, so that optical anti-shaking is realized, and the imaging quality of the camera module in the motion state object shooting are improved. The shape memory member is connected between the moving portion 120 and the base portion 110, and the shape memory member drives the moving portion 120 to move when the moving portion is deformed in a telescopic manner, so that the use of a driving magnet in the prior art can be avoided, the optical anti-shake structure and other components with the magnet are prevented from generating magnetic interference when being assembled on a terminal or other equipment, and the use performance of the optical anti-shake structure and other components with the magnet is ensured. Especially when being equipped with more than two camera modules in terminal equipment, can avoid the magnetic interference between the camera module, ensure the performance of each camera module.

Because the effort that the shape memory spare produced when flexible deformation is greater than the drive power of drive magnet among the prior art, can drive image sensor 600 of great weight, and then can realize optics anti-shake in the camera module of high pixel and heavy weight, enlarged the application scope of optics anti-shake structure, improved the practicality of optics anti-shake structure.

The shape memory member can be deformed by stretching when the temperature changes, and the conditions for realizing the deformation by stretching are not limited to the temperature change.

The shape memory member can drive the moving portion 120 to move relative to the base portion 110 by applying a driving force to the moving portion 120, so that the shape memory member can directly act on the moving portion 120, which contributes to the structural simplification of the anti-shake structure.

In some embodiments of the present application, the shape memory member includes a first shape memory member 210, the first shape memory member 210 connects the base portion 110 and the moving portion 120, and when the first shape memory member 210 is deformed telescopically, the moving portion 120 is moved in translation relative to the base portion 110 in the target direction.

In this embodiment, the moving portion 120 is driven by the first shape memory component 210 to move in a translational manner along the target direction relative to the base portion 110, so as to achieve optical anti-shake of the camera module in the target direction. The target direction includes, but is not limited to, one direction or two or more different directions, and is not limited to a linear translation direction or a rotation direction.

Referring to fig. 4, in some embodiments of the present application, the target direction includes a first direction and/or a second direction, when the target direction includes the first direction and the second direction, the number of the first shape memory members 210 is two or more, wherein when a part of the number of the first shape memory members 210 is deformed telescopically, the moving portion 120 moves in translation relative to the base portion 110 along the first direction, and when another part of the number of the first shape memory members 210 is deformed telescopically, the moving portion 120 moves in translation relative to the base portion 110 along the second direction, and the first direction and the second direction are perpendicular.

In this embodiment, the target direction includes a first direction, and the moving portion 120 is driven by the telescopic deformation of the first shape memory member 210 to move in a translational manner relative to the base portion 110 along the first direction; or, the target direction includes a second direction, and the moving portion 120 is driven by the telescopic deformation of the first shape memory member 210 to move in a translational manner relative to the base portion 110 along the second direction; alternatively, the target direction includes a first direction and a second direction, in which case two or more first shape memory members 210 are connected between the moving part 120 and the base part 110, the moving portion 120 is driven to move in a first direction in a translational manner relative to the base portion 110 by the telescopic deformation of a part of the first shape memory members 210, and the other part of the first shape memory members 210 are deformed to move the moving portion 120 in a second direction relative to the base portion 110, this arrangement enables the moving part 120 to move in translation in the first and second directions relative to the base part 110, that is, the image sensor 600 can move along with the moving part 120 in both directions perpendicular to each other, so can realize the optics anti-shake to camera module in mutually perpendicular's first direction and the ascending optics anti-shake of second direction, improve optics anti-shake structure and in optics anti-shake function comprehensive.

When the target direction includes a first direction or a second direction, the number of the first shape memory members 210 may be one or more than two. The first direction may be unidirectional or bidirectional, and the second direction may also be unidirectional or bidirectional. When the first direction is bidirectional, the first shape memory element 210 can drive the moving portion 120 to move in a translational manner and reset along the first direction; when the second direction is bidirectional, the first shape memory element 210 can drive the moving portion 120 to move in a translational manner and reset along the second direction.

The present application is not limited to a specific direction of the first direction and the second direction. Wherein the first direction and the second direction include, but are not limited to: the first direction is a length direction of the carrier 100, the second direction is a width direction of the carrier 100, and specifically, referring to fig. 4, a direction a is the first direction and a direction B is the second direction; alternatively, the first direction is a width direction of the carrier 100, and the second direction is a length direction of the carrier 100.

In some embodiments of the present application, the moving part 120 is provided with the first shape memory member 210 at both sides in the target direction.

In this embodiment, the two sides of the moving portion 120 along the target direction are both provided with the first shape memory members 210, and the first shape memory members 210 on the two sides are used for driving the moving portion 120 to move in a translational manner towards the initial position on the two sides along the target direction, so that the optical anti-shake function on the target dimension of the target direction can be realized. The initial position of the moving part 120 is understood to be the position where the moving part 120 would be without optical jitter, such as the position shown in fig. 4.

When the target direction is the first direction, the first shape memory members 210 are disposed on both sides of the moving portion 120 along the first direction, and the first shape memory members 210 on both sides are used to drive the moving portion 120 to move in a translational manner towards the initial position on both sides along the first direction, so as to achieve optical anti-shake in a first translational dimension to which the first direction belongs. When the target direction is the second direction, the first shape memory elements 210 are disposed on both sides of the moving portion 120 along the second direction, and the second shape memory elements 210 on both sides are used to drive the moving portion 120 to move in a translational manner towards the initial position on both sides along the second direction, so as to achieve optical anti-shake in a second translational dimension to which the second direction belongs. When the target direction is the first direction and the second direction, the two sides of the moving portion 120 along the first direction are both provided with the first shape memory element 210, and the two sides of the moving portion 120 along the second direction are also both provided with the first shape memory element 210, the first shape memory elements 210 located at the two sides of the moving portion 120 along the first direction are used for driving the moving portion 120 to move in a translational manner towards the initial position at the two sides along the first direction, and the first shape memory elements 210 located at the two sides of the moving portion 120 along the second direction are used for driving the moving portion 120 to move in a translational manner towards the initial position at the two sides along the second direction, so that optical anti-shake in the first translational dimension and the second translational dimension is realized, and the comprehensiveness of the optical anti-shake structure in the optical anti-shake function is improved. Wherein the first translation dimension and the second translation dimension are perpendicular to each other.

For example: referring to fig. 4, the two sides of the moving portion 120 along the first direction are respectively provided with a first shape memory member 210, the first shape memory member 210 on the left side can drive the moving portion 120 to move in a left-hand translational manner along the first direction at the initial position, and the first shape memory member 210 on the right side can drive the moving portion 120 to move in a right-hand translational manner along the first direction at the initial position.

In some embodiments of the present application, the moving part 120 has at least one first connection position, the base part 110 has at least one second connection position, one first shape memory member 210 is connected to the at least one first connection position and the at least one second connection position;

In this embodiment, the carrier 100 can be connected to a first shape memory element 210 through at least one first connection position on the moving portion 120 and at least one second connection position on the base portion 110, wherein a connection line between the at least one first connection position and the at least one second connection position forms a symmetrical pattern, and a symmetry axis of the symmetrical pattern is parallel to the target direction, and the arrangement is such that a direction of a force applied to the moving portion 120 by the first shape memory element 210 connected to the first connection position and the second connection position when the first shape memory element is deformed telescopically is parallel to the target direction, so as to drive the moving portion 120 to move accurately along the target direction.

For example: the moving part 120 is provided with a first connecting position, the base part 110 is provided with two second connecting positions, and a connecting line of the first connecting position and the two second connecting positions forms an isosceles trapezoid, as shown in fig. 4; or, two first connection positions are arranged on the moving part 120, one second connection position is arranged on the base part 110, and a connecting line of the two first connection positions and the second connection position forms an isosceles trapezoid. Another example is: the moving portion 120 is provided with a first connecting position, the base portion 110 is provided with a second connecting position, and a connecting line between the first connecting position and the second connecting position forms a rectangular shape.

When the first shape memory element 210 connected to the first connection position and the second connection position drives the moving part 210 to move in a first direction, the symmetry axis of the symmetrical graph is parallel to the first direction; when the first shape memory element 210 connected to the first connection position and the second connection position drives the moving portion 210 to move in a translational direction in a second direction, the symmetry axis of the symmetry pattern is parallel to the second direction.

When more than two first shape memory members 210 are connected between the moving part 120 and the base part 110, each first shape memory member 210 can be connected between the moving part 120 and the base part 110 in the same manner as described above, so that the processing efficiency of the anti-shake module can be improved. As shown in fig. 4, the four first shape memory members 210 connected between the moving portion 120 and the base portion 110 are connected in the manner described above. Of course, in other embodiments, the same different connection method can be used to connect more than two first shape memory members 210 between the moving portion 120 and the base portion 110. For example: when two first shape memory members 210 are connected between the moving portion 120 and the base portion 110, an image formed by a line connecting at least one first connecting position and at least one second connecting position for connecting one of the first shape memory members 210 is an isosceles trapezoid, and an image formed by a line connecting at least one first connecting position and at least one second connecting position for connecting the other first shape memory member 210 is a rectangle, etc.

Referring to fig. 5, in some embodiments of the present application, the shape memory member further includes a second shape memory member 220, the second shape memory member 220 connects the base portion 110 and the moving portion, when the second shape memory member 220 is deformed telescopically, the moving portion 120 rotates around a third direction relative to the base portion 110, and the first direction, the second direction and the third direction are perpendicular to each other.

In this embodiment, the second shape memory member 220 connects the base portion 110 and the moving portion 120, and drives the moving portion 120 to rotate around the third direction relative to the base portion 110 during the stretching deformation, so as to drive the image sensor 600 to rotate synchronously with the moving portion 120. The second shape memory component 220 can drive the moving portion 120 to rotate in one direction (clockwise or counterclockwise) or in two directions (clockwise and counterclockwise) around the third direction at the initial position, so that the optical anti-shake function in the rotation dimension can be achieved, and the comprehensiveness of the optical anti-shake structure in the optical anti-shake function is improved.

Here, the rotation of the moving part 120 around the third direction may be preferably performed such that the moving part 120 rotates around the third direction, which can reduce the complexity of the optical anti-shake structure. Of course, in other embodiments, the rotation of the moving part 120 about the third direction may be a revolution of the moving part 120 about the third direction.

In some embodiments of the present application, the second shape memory elements 220 are circumferentially disposed about at least a portion of the motion portion 120.

In the present embodiment, the second shape memory member 220 surrounds at least a part of the moving portion 120 along the circumferential direction of the moving portion 120, which can increase the rotation angle of the moving portion 120, and realize a large-angle optical anti-shake in the rotation dimension. Referring to fig. 5, taking the motion portion 120 as a rectangle as an example, the second shape memory member 220 surrounds three adjacent sides of the motion portion 120, so that the motion portion 120 has a relatively large rotation angle with respect to the base portion 110.

It should be understood that the angle of rotation of the moving portion 120 relative to the base portion 110 may depend on the length of the portion of the second shape memory member 220 circumferentially surrounding the moving portion 120, and the angle of rotation of the moving portion 120 in the clockwise or counterclockwise direction is greater when the length of the portion of the second shape memory member 220 circumferentially surrounding the moving portion 120 is longer, i.e., the more the portion of the second shape memory member 220 circumferentially surrounding the moving portion 120 is.

In some embodiments of the present application, the receiving area is a receiving groove 121 recessed in the moving part 120, and the receiving groove is disposed in an inclined manner relative to the moving part 120 along a direction opposite to a rotation direction of the moving part 120 under the action of the second shape memory element 220.

In this embodiment, the accommodating groove 121 is recessed on the side surface of the moving portion 120, so that the accommodating groove 121 not only can limit the image sensor 600 located therein, but also can reduce the thickness of the whole structure formed by the moving portion 120 and the image sensor 600, thereby facilitating the thinning of the optical anti-shake structure and reducing the height of the camera module.

The accommodating groove is inclined relative to the moving part 120 in a direction opposite to the rotation direction of the moving part 120 by the second shape memory member 220, so that the image sensor 600 positioned therein is inclined relative to the moving part 120 in the same direction as the accommodating groove 121. When the moving part 120 is rotated at the initial position by the second shape memory member 220, the image sensor 600 may be rotated from the initial position through the set position, which is equivalent to the image sensor 600 being rotated in both directions at the set position. In this way, the optical anti-shake in the rotation dimension can be realized by only performing the unidirectional rotation of the moving part 120 at the initial position, which helps to simplify the design and number of the second shape memory members 220. The tilted position of the image sensor 600 may be a position parallel to the first direction or the second direction.

Based on fig. 5, the second shape memory element 220 can drive the moving portion 120 to rotate clockwise, the accommodating groove 121 is inclined counterclockwise relative to the moving portion 120, and the swing position of the accommodating groove 121 is parallel to the first direction.

Of course, in other embodiments, the optical anti-shake in the rotation dimension can be achieved by providing two second shape memory members 220 to respectively drive the moving portion 120 to rotate forward and backward around the third direction at the initial position.

It should be understood that the image sensor 600 is tilted with respect to the tilted position in the initial position, and the camera module can perform anti-shake compensation through electronic anti-shake and the like. Here, the initial position of the image sensor 600 is the position of the moving part 120 at the initial position.

In some embodiments of the present application, the first shape memory member 210 is a flexible structure, and the length of the first shape memory member 210 is shortened during the power-on warming-up to drive the motion part 120 to move; and/or the second shape memory member 220 is a flexible structure, and the second shape memory member 220 shortens in length during the temperature rise by energization to drive the moving portion 120 to rotate.

In the present embodiment, the first shape memory member 210 is a flexible structure, so that the first shape memory member 210 can be bent and straightened. Similarly, the second shape memory member 220 is a flexible structure, such that the second shape memory member 220 can be bent and straightened. The first shape memory element 210 and/or the second shape memory element 220 are flexible structures, which is understood to mean that the shape memory element is flexible in the state when it is deformed telescopically without temperature change, i.e. the shape memory element is flexible in the natural state. The first shape memory member 210 and/or the second shape memory member 220 may be flexible or rigid in structure when they are deformed telescopically with a change in temperature.

When the first shape memory member 210 is energized, the temperature of the first shape memory member 210 increases due to the internal resistance, and the length of the first shape memory member 210 is shortened. When the length of the first shape memory member 210 is shortened, the moving portion 120 is driven to move, that is, the first shape memory member 210 pulls the moving portion 120 to approach it; when the first shape memory member 210 is powered off and the temperature drops, the first shape memory member 210 is restored in shape. Similarly, when the second shape memory element 220 is powered on, the temperature of the second shape memory element 220 will increase due to the internal resistance, and the second shape memory element 220 will be shortened. When the length of the second shape memory element 220 is shortened, the moving portion 120 is driven to rotate, i.e. the second shape memory element 220 pulls the moving portion 120 to approach it; when the second shape memory device 220 is powered off and the temperature drops, the second shape memory device 220 will perform shape recovery.

The shape of the first shape memory element 210 and the second shape memory element 220 includes, but is not limited to, a wire-shaped shape memory alloy, which is not limited in the present application.

Of course, in other embodiments, the first shape memory member 210 and/or the second shape memory member 220 may be retractable when heated to drive the moving portion 120 to move and retractable after returning to the temperature to drive the moving portion 120 to reset, etc.

In some embodiments of the present application, a portion of the first shape memory member 210 between the connection positions with the base portion 110 and the moving portion 120 has a first margin section having a curved shape; and/or, a portion of the second shape memory member 220 between the connection positions with the base portion 110 and the moving portion 120 has a second margin section having a curved shape.

In the present embodiment, when the first shape memory member 210 and the second shape memory member 220 are both flexible structures and the length is shortened by increasing the temperature when the power is applied, the moving portion 120 can move in the first direction or the second direction by the first margin section provided in the first shape memory member 210 and the second margin section provided in the second shape memory member 220, and the moving portion is not limited by the other first shape memory member 210 or the second shape memory member 220 during the moving process, and the moving portion 120 can rotate by the required angle driven by the second shape memory member 220 and is not limited by the first shape memory member 210 during the rotating process. When the moving part 120 is driven by some of the first shape memory members 210 to move in the first direction or the second direction, the remaining sections of the first shape memory members 210 and the second shape memory members 220 will gradually shrink or even disappear; when the moving part 120 is rotated by the second shape memory member 220, the remaining portion of the first shape memory member 210 is gradually reduced or even eliminated.

The length of first surplus section and second surplus section can set up according to the user demand, and then can realize big-angle optics anti-shake on two removal dimensions.

Of course, in other embodiments, when the first shape memory member 210 is a flexible structure and the length is shortened by heating up with electricity, the second shape memory member 220 can also be a flexible structure and can be expanded or contracted with respect to the initial length when the temperature changes; alternatively, when the second shape memory member 220 is a flexible structure and the length thereof is shortened by heating when power is supplied, the first shape memory member 210 may also be a flexible structure and may extend or contract with respect to the initial length when the temperature changes, so as to satisfy the requirement of the moving distance or angle of the moving portion 120 in the above dimension.

In some embodiments of the present application, a resilient part is connected between the moving part 120 and the base part 110, the resilient part stores elastic potential energy when the moving part 120 moves, and the stored elastic potential energy is used to drive the moving part 120 to reset.

In the embodiment, the elastic part can be used for driving the moving part 120 to automatically reset after moving, so that the shape memory member does not need to select the type with the functions of driving the moving part 120 to move and resetting, and the shape memory member is beneficial to increasing the use selection range of the shape memory member and reducing the use number of the shape memory member. For example, the shape memory member may be selected to be flexible and have a reduced length during warming, and a single shape memory member of this type can drive the moving part 120 to move but cannot drive the moving part 120 to reset.

When the shape memory member drives the moving portion 120 to move, the moving portion 120 drives the elastic portion to deform to store a certain elastic potential energy, and when the shape memory member performs shape recovery, the stored elastic potential energy is released to drive the moving portion 120 to automatically recover.

Of course, in other embodiments, the moving portion 120 is reset by the shape memory member when the shape is restored, or the moving portion 120 is reset by using another shape memory member.

In some embodiments of the present application, the base portion 110 has an opening portion therethrough, and the moving portion 120 is located at the opening portion. With this arrangement, the thickness of the entire structure formed by the base portion 110 and the moving portion 120 can be reduced, which contributes to the reduction of the thickness of the optical anti-shake structure and the reduction of the height of the camera module.

In some embodiments of the present application, the carrier 100 is a flexible circuit board, the flexible circuit board including:

a first portion forming the moving part 120;

a second portion that surrounds the outer periphery of the first portion, the second portion forming a base portion 110;

at least one connecting part 130, the at least one connecting part 130 is located between the first part and the second part, the connecting part 130 is arranged in a bending mode and is connected with the first part and the second part, and the at least one connecting part 130 forms an elastic part.

In the present embodiment, the carrier 100 adopts a flexible circuit board structure, and the flexible circuit board may include a first portion, a second portion, and at least one connection portion 130. The second portion surrounds the first portion with a space therebetween, at least one connecting portion 130 is located in the space and each connecting portion 130 connects the first portion and the second portion. The connection portion 130 is a flexible circuit board and is bent such that the connection portion 130 has a certain elasticity. The first portion can be used as the moving portion 120, the second portion can be used as the base portion 110, the at least one connecting portion 130 can be used as the elastic portion, and the first portion and the at least one connecting portion 130 are located at the opening portion of the second portion.

The external circuit of the image sensor 600 and the power supply circuit of the shape memory member may be directly formed on the flexible circuit board structure without configuring an additional circuit board, which is helpful to simplify the structure of the camera module. It should be understood that the connection portion 130 can not only be used as an elastic portion, but also be used for routing to form the above-mentioned power supply circuit and the like.

In some embodiments of the present application, the elastic part includes two or more connection parts 130, and the two or more connection parts 130 are spaced apart in a circumferential direction around the first portion.

In this embodiment, the elastic portion includes two or more connecting portions 130, and the two or more connecting portions 130 are disposed at intervals along the circumferential direction around the first portion, so that the stress of the moving portion 120 is more uniform, and the stability of the moving portion 120 during the resetting movement is improved.

In some embodiments of the present application, the first portion, the second portion, and at least one connection portion 130 are integrally formed, wherein any two adjacent connection portions 130 are separated from each other by a hollow portion 140. So configured, processing of the carrier 100 can be facilitated.

Processing of the carrier 100 includes, but is not limited to: the carrier 100 of the present embodiment can be manufactured by forming a hollow-out portion 140 on a preformed flexible circuit board.

In some embodiments of the present application, the optical anti-shake structure further includes a mounting base 300, the mounting base 300 is located on a side of the carrier 100 away from the accommodating area, the carrier 100 is mounted on the mounting base 300, a plurality of supporting members are disposed between the mounting base 300 and the moving portion 120, and the plurality of supporting members are in supporting cooperation with the moving portion 120, wherein the plurality of supporting members are not parallel to each other and are disposed flush with one end of the mounting base 300.

In the present embodiment, the mounting base 300 is located on a side of the carrier 100 away from the accommodating area for carrying the mounting carrier 100. A plurality of supports are provided between the mount 300 and the moving part 120, and the plurality of supports are used to support the moving part 120 together. The support members are not parallel to each other and are disposed parallel to each other at ends far away from the mounting base 300, that is, a support plane is formed at ends far away from the mounting base 300, so that the moving portion 120 can move smoothly on the support plane formed by the support members and can be kept parallel to the support plane during movement, thereby ensuring the positional relationship between the lens 900 and the image sensor 600 and ensuring the image quality.

In some embodiments of the present application, the supporting element is a ball 320, one end of the mounting base 300 close to the moving portion 120 or one end of the moving portion 120 close to the mounting base 300 is provided with a plurality of positioning grooves 310, the balls 320 are respectively mounted in the plurality of positioning grooves 310, and the balls 320 are in positioning fit with the corresponding positioning grooves 310.

In this embodiment, the supporting member is a ball 320 structure, which not only can reduce the contact wear between the supporting member and the moving portion 120 and prolong the service life of the supporting member and the moving portion 120, but also can make the movement of the moving portion 120 on the supporting member smoother and smoother, thereby facilitating the improvement of the imaging stability of the camera module.

One end of the mounting base 300 close to the moving portion 120 or one end of the moving portion 120 close to the mounting base 300 is provided with a plurality of positioning grooves 310, a plurality of balls 320 are respectively installed in the plurality of positioning grooves 310, and the balls 320 are in positioning fit with the corresponding positioning grooves 310, so that the balls 320 can be prevented from moving between the mounting base 300 and the carrier 100. Among them, the positioning groove 310 may be preferably provided to the mount 300 to facilitate assembly between the carrier 100, the mount 300, and the ball 320.

In addition, the moving portion 120 is recessed with a plurality of movable grooves 123 near the side of the mounting base 300, the plurality of movable grooves 123 and the plurality of positioning grooves 310 are arranged in a one-to-one correspondence, and one end of the ball 320 far away from the positioning groove 310 is located in the corresponding movable groove 123, so as to reduce the overall thickness between the mounting base 300 and the carrier 100. Wherein, the ball 320 is in clearance fit with the movable groove 123 to prevent the ball 320 from restricting the movement of the moving part 120.

In some embodiments of the present application, the connecting positions of the moving part 120 and the base part 110 with the first shape memory member 210 are provided with a conductive first clamping member 150 and the first shape memory member 210 is clamped by the first clamping member 150; the moving portion 120 and the base portion 110 are provided with a second clamping member 160 that is electrically conductive at the connection position with the second shape memory member 220, respectively, and clamp the second shape memory member 220 by the second clamping member 160.

In this embodiment, the carrier 100 is connected to the first shape memory member 210 through the first clamping member 150, so that the first shape memory member 210 has little influence on the connection strength between the first clamping member 150 and the carrier 100 when being deformed in a stretching and contracting manner, and the connection strength and stability between the first shape memory member 210 and the carrier 100 are ensured. The carrier 100 is connected with the second shape memory member 220 through the second clamping member 160, so that the second shape memory member 220 has little influence on the connection strength between the second clamping member 160 and the carrier 100 when being deformed telescopically, and the connection strength and stability between the second shape memory member 220 and the carrier 100 are ensured.

The first clamping member 150 is a conductive structure, that is, the first clamping member 150 can be used as a part of a first power supply circuit for supplying power to the first shape memory member 210, so that the influence of the first shape memory member 210 on the connection strength of the electrical connection point between the first clamping member 150 and the first power supply circuit when the first shape memory member is deformed in a stretching and contracting manner can be reduced, and the electrical connection strength and stability between the first shape memory member 210 and the first power supply circuit can be ensured. The second clamping member 160 is a conductive structure, that is, the second clamping member 160 can be used as a part of a second power supply circuit for supplying power to the second shape memory member 220, so that the influence of the second shape memory member 220 on the connection strength of the electrical connection point between the second clamping member 160 and the second power supply circuit when the second shape memory member 220 is deformed in a stretching and contracting manner can be reduced, and the electrical connection strength and stability between the second shape memory member 220 and the second power supply circuit can be ensured.

When the carrier 100 is a flexible circuit board structure, the first clamping member 150 and the second clamping member 160 can be directly welded on the carrier 100 and respectively connected to the first power supply circuit and the second power supply circuit in the flexible circuit board.

The structure of the first clamping member 150 and the second clamping member 160 may be a clip structure, etc., which is not limited in this application.

In some embodiments of the present application, a side of the moving portion 120 close to or far from the receiving area is provided with a limiting protrusion, the limiting protrusion is provided with a limiting groove, and the second shape memory element 220 surrounds the limiting protrusion and is located in the limiting groove.

In the embodiment, the motion portion 120 is provided with the limiting protrusion, and the second shape memory element 220 surrounds the limiting protrusion and is located in the limiting groove, so that not only is an area of the motion portion 120 that can be surrounded by the second shape memory element 220 increased, but also the second shape memory element 220 can be limited by the limiting groove, thereby preventing the second shape memory element 220 from separating from the motion portion 120, and improving the stability of the second shape memory element 220 surrounding the motion portion 120. Especially when the moving part 120 is a flexible circuit board, the stability of the second shape memory member 220 surrounding the moving part 120 can be significantly improved when the second shape memory member 220 surrounds the limiting convex part.

The limiting protrusion part comprises more than two limiting protrusions 122, and the more than two limiting protrusions 122 are arranged at intervals along the circumferential edge of the moving part 120. The limiting groove may be disposed on one or more limiting protrusions 122.

In some embodiments of the present application, the first shape memory member 210 is located on a side of the moving part 120 away from the stopper protrusion. With this arrangement, a larger distance can be formed between the first shape memory member 210 and the second shape memory member 220, which not only prevents interference between the two members, but also facilitates assembly.

Based on fig. 2-5, the first shape memory member 210 is located on a side of the moving portion 120 close to the mounting seat 300, and the limiting protrusion is located on a side of the moving portion 120 away from the mounting seat 300.

In some embodiments of the present application, three hall sensors are disposed on one side of the moving portion 120 close to the mounting seat 300, three hall magnets are disposed on one side of the mounting seat 300 close to the moving portion 120, and the three hall sensors and the three hall magnets are respectively disposed in a one-to-one correspondence.

In this embodiment, the hall sensor and the hall magnet are matched to obtain the real-time position of the image sensor 600, thereby ensuring that the image sensor 600 moves to the accurate position. When the hall sensor moves along with the moving part 120, the hall sensor cuts the magnetic field corresponding to the hall magnet and determines the real-time position of the image sensor 600 through the magnetic field change signal.

The three hall sensors may be a first hall sensor 410, a second hall sensor 430, and a third hall sensor 450, respectively, and the three hall magnets may be a first hall magnet 420, a second hall magnet 440, and a third hall magnet 460, respectively. The first hall sensor 410 and the first hall magnet 420 are arranged oppositely to acquire a real-time position of the image sensor 600 when moving along the first direction, the second hall sensor 430 and the second hall magnet 440 are arranged oppositely to acquire a real-time position of the image sensor 600 when moving along the second direction, and the third hall sensor 450 and the third hall magnet 460 are arranged oppositely to acquire a real-time position of the image sensor 600 when rotating around the third direction.

The embodiment of the application also provides a camera module, which comprises an optical anti-shake structure.

In this embodiment, the accommodating area of the optical anti-shake structure accommodates the image sensor 600, the carrier 100 is mounted with the driving motor 800, the driving motor 800 is mounted with the lens 900, and the optical filter 700 is disposed between the lens 900 and the image sensor 600. The light sequentially passes through the lens 900 and the filter 700 to reach the image sensor 600, and the image sensor 600 is driven to move by the shape memory element to realize optical anti-shake.

The embodiment of the application further provides terminal equipment which comprises the camera module.

In this embodiment, the terminal device includes, but is not limited to, a mobile phone, a computer, a smart watch, and the like. The number of the camera modules in the terminal equipment can be more than one, and the camera modules can be front cameras or rear cameras.

It will be understood that any reference herein to the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as indicating or relating to the orientation or positional relationship illustrated in the drawings, is intended merely to facilitate the description of the invention and to simplify the description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be considered as limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means three or more and "more than three" includes the present number unless otherwise specified.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. An optical anti-shake structure, comprising:

a carrier including a base portion and a moving portion having an accommodation area for accommodating an image sensor, the moving portion being movably disposed with respect to the base portion;

a shape memory member connecting the base portion and the moving portion, the moving portion moving relative to the base portion when the shape memory member is deformed telescopically.

2. The optical anti-shake apparatus according to claim 1, wherein the shape memory member includes a first shape memory member that connects the base portion and the moving portion, and the moving portion moves in translation in a target direction with respect to the base portion when the first shape memory member is deformed telescopically.

3. The optical anti-shake structure according to claim 2, wherein the target direction includes a first direction and/or a second direction, and when the target direction includes the first direction and the second direction, the number of the first shape memory members is two or more, wherein when a part of the number of the first shape memory members is deformed telescopically, the moving portion moves translationally with respect to the base portion in the first direction, and when another part of the number of the first shape memory members is deformed telescopically, the moving portion moves translationally with respect to the base portion in the second direction, and the first direction and the second direction are perpendicular.

4. The optical anti-shake structure according to claim 2, wherein the moving portion is provided with the first shape memory member on both sides in the target direction.

5. The optical anti-shake structure according to claim 2, wherein the moving portion has at least one first connection position, the base portion has at least one second connection position, and one first shape memory member is connected to the at least one first connection position and the at least one second connection position;

and the figure formed by connecting the at least one first connecting position with the at least one second connecting position is a symmetrical figure, and the symmetry axis of the symmetrical figure is parallel to the target direction.

6. The optical anti-shake structure according to any one of claims 1 to 5, wherein the shape memory member comprises a second shape memory member connecting the base portion and the moving portion, and the moving portion rotates about a third direction with respect to the base portion when the second shape memory member is deformed telescopically.

7. The optical anti-shake structure according to claim 6, wherein the second shape memory member is provided circumferentially around at least part of the moving part.

8. The optical anti-shake structure according to claim 6, wherein the receiving area is a receiving groove disposed on the moving portion, and the receiving groove is disposed obliquely with respect to the moving portion along a direction opposite to a rotation direction of the moving portion under the action of the second shape memory element.

9. The optical anti-shake structure according to claim 1, wherein an elastic part is connected between the moving part and the base part, and stores elastic potential energy when the moving part moves and the stored elastic potential energy is used for driving the moving part to return.

10. The optical anti-shake structure according to claim 9, wherein the carrier is a flexible circuit board, the flexible circuit board comprising:

a first portion forming the moving part;

a second portion that surrounds an outer periphery of the first portion, the second portion forming the base portion;

at least one connecting part located between the first part and the second part, the connecting part being bent and connecting the first part and the second part, the at least one connecting part forming the elastic part.

11. The optical anti-shake apparatus according to claim 10, further comprising a mounting seat, the mounting seat being located on a side of the carrier away from the accommodating area, the carrier being mounted on the mounting seat, a plurality of supporting members being disposed between the mounting seat and the moving portion, the plurality of supporting members being in supporting engagement with the moving portion, wherein the plurality of supporting members are disposed non-parallel and one end of the supporting members away from the mounting seat is disposed flush.

12. The optical anti-shake apparatus according to claim 11, wherein the supporting element is a ball, a plurality of positioning grooves are formed at one end of the mounting base close to the moving portion or one end of the moving portion close to the mounting base, the plurality of balls are respectively mounted in the plurality of positioning grooves, and the ball is in positioning fit with the corresponding positioning groove.

13. A camera module, comprising an optical anti-shake structure according to any one of claims 1-12.

14. A terminal device characterized by comprising the camera module according to claim 13.