CN114257710B - Optical anti-shake structure and camera module and terminal equipment with same - Google Patents
Optical anti-shake structure and camera module and terminal equipment with same Download PDFInfo
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- CN114257710B CN114257710B CN202011010248.8A CN202011010248A CN114257710B CN 114257710 B CN114257710 B CN 114257710B CN 202011010248 A CN202011010248 A CN 202011010248A CN 114257710 B CN114257710 B CN 114257710B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 63
- 230000015654 memory Effects 0.000 claims abstract description 204
- 238000005381 potential energy Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 4
- 230000006870 function Effects 0.000 abstract description 7
- 238000003384 imaging method Methods 0.000 abstract description 7
- 238000013519 translation Methods 0.000 description 9
- 230000008602 contraction Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000002457 bidirectional effect Effects 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
- H04N23/682—Vibration or motion blur correction
- H04N23/685—Vibration or motion blur correction performed by mechanical compensation
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- Engineering & Computer Science (AREA)
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- Signal Processing (AREA)
- Studio Devices (AREA)
- Adjustment Of Camera Lenses (AREA)
Abstract
The application discloses optics anti-shake structure and have its camera module, terminal equipment, optics anti-shake structure includes: the carrier comprises a base body part and a moving part, wherein the moving part is provided with a containing area for containing the image sensor, and the moving part is movably arranged relative to the base body part; the shape memory piece is connected with the base body part and the moving part, and the moving part moves relative to the base body part when the shape memory piece stretches and deforms. The application provides an optical anti-shake structure and have its camera module, terminal equipment drives image sensor motion through the flexible deformation of shape memory spare, has not only realized the function of optical anti-shake, has improved the imaging quality of camera module under the motion state and when shooting the motion state object, can also avoid producing magnetic interference each other with other parts that have the magnet, ensures the performance of optical anti-shake structure.
Description
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.
Background
The existing mobile phone is generally provided with one or more camera modules, the camera modules are provided with an optical anti-shake structure, and offset of an imaging light path caused by hand shake when a user holds the mobile phone to shoot is compensated through the optical anti-shake structure, so that the blurring degree of a photo is obviously reduced.
At present, the optical anti-shake structure generally comprises a driving magnet and a coil, and the electromagnetic driving of the driving magnet and the coil are matched to enable the coil to drive the image sensor to move, so that the optical anti-shake structure is realized. 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 the magnet mutually generate magnetic interference, thereby affecting the anti-shake performance.
Disclosure of Invention
In view of the foregoing drawbacks 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 carrier comprises a base body part and a moving part, wherein the moving part is provided with a containing area for containing the image sensor, and the moving part is movably arranged relative to the base body part;
the shape memory piece is connected with the base body part and the moving part, and the moving part moves relative to the base body part when the shape memory piece stretches and deforms.
Further, 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 the target direction relative to the base portion when the first shape memory member is deformed in a telescopic manner.
Further, 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 more than two, wherein a part of the number of the first shape memory members move in translation along the first direction relative to the base portion during the expansion and the contraction, and the other part of the number of the first shape memory members move in translation along the second direction relative to the base portion during the expansion and the contraction, 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;
the pattern formed by connecting at least one first connecting position and at least one second connecting position is a symmetrical pattern, and the symmetrical axis of the symmetrical pattern is parallel to the target direction.
Further, the shape memory member includes a second shape memory member that connects 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 in a telescopic manner.
Further, the second shape memory member is circumferentially disposed around at least a portion of the moving portion.
Further, the accommodating area is an accommodating groove arranged on the moving part, and the accommodating groove is obliquely arranged relative to the moving part along the direction opposite to the rotating direction of the moving part under the action of the second shape memory element.
Further, an elastic part is connected between the moving part and the base body part, 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, the flexible circuit board comprising:
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 between the first part and the second part in a bending way and is connected with the first part and the second part, and the elastic part is formed by the at least one connecting part.
Further, still include the mount pad, the mount pad is located one side that the holding district was kept away from to the carrier, and the carrier is installed in the mount pad, is equipped with a plurality of support pieces between mount pad and the motion portion, and a plurality of support pieces support the cooperation with the motion portion, and wherein a plurality of support pieces are non-parallel arrangement and keep away from the one end parallel and level setting of mount pad.
Further, the 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 in a plurality of constant head tanks respectively, and the ball cooperates with the constant head tank location 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 application further provides a terminal device, including a camera module.
The application provides an optical anti-shake structure and have its camera module, terminal equipment drives image sensor motion through the flexible deformation of shape memory spare, has not only realized the function of optical anti-shake, has improved the imaging quality of camera module under the motion state and when shooting the motion state object, can also avoid producing magnetic interference each other with other parts that have the magnet, ensures the performance of optical anti-shake structure. Meanwhile, the acting force generated by the shape memory piece in the telescopic deformation process is large so as to drive the image sensor with large weight to move, and then the optical anti-shake can be realized in the camera module with high pixels and large weight, the application range of the optical anti-shake structure is enlarged, and the practicability of the optical anti-shake structure is improved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:
fig. 1 is a schematic structural perspective view of a camera module provided in an embodiment of the present application;
fig. 2 is a schematic exploded view of a camera module according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a carrier according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram illustrating the cooperation between the first deformation memory and the carrier according to the embodiment of the present disclosure;
fig. 5 is a schematic diagram illustrating the cooperation between the second deformation memory and the carrier according to the embodiment of the present application.
Detailed Description
The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
Referring to fig. 1-3, an embodiment of the present application provides an optical anti-shake structure, including:
the carrier 100, the carrier 100 includes a base portion 110 and a moving portion 120, the moving portion 120 having a receiving area for receiving the image sensor 600, the moving portion 120 being movably disposed with respect to the base portion 110;
A shape memory member connecting the base portion 110 and the moving portion 120, the moving portion 120 moving 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 part 120 is movable relative to the base part 110, and the motion part 120 drives the image sensor 600 to move so as to compensate the offset of an imaging light path caused by jitter and the like, thereby realizing optical anti-shake and further improving the imaging quality of the camera module in a motion state and the imaging quality when shooting an object in the motion state. The shape memory piece is connected between the moving part 120 and the base body part 110, and the moving part 120 is driven to move when the shape memory piece stretches and deforms, so that the use of a driving magnet in the prior art can be avoided, and further, the optical anti-shake structure and other parts with the magnet are prevented from mutually generating magnetic interference when the optical anti-shake structure is assembled in equipment such as a terminal, and the usability of the optical anti-shake structure and the other parts with the magnet is ensured. Especially, when more than two camera modules are assembled in the terminal equipment, the magnetic interference between the camera modules can be avoided, and the service performance of each camera module is ensured.
Because the effort that shape memory spare produced when flexible deformation is greater than the actuating force of drive magnet among the prior art, can drive the image sensor 600 of great weight, and then can realize optics anti-shake in the camera module of high pixel and great weight, enlarged the application scope of optics anti-shake structure, improved the practicality of optics anti-shake structure.
The shape memory member is capable of performing expansion and contraction deformation when the temperature changes, and the conditions for realizing the expansion and contraction deformation of the shape memory member are not limited to the above temperature changes.
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 connecting the base portion 110 and the moving portion 120, the moving portion 120 translating relative to the base portion 110 in a target direction upon telescoping deformation of the first shape memory member 210.
In this embodiment, the moving portion 120 is driven by the first shape memory element 210 to move in a translational manner along the target direction relative to the base portion 110, so as to realize optical anti-shake of the camera module in the target direction. Wherein 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, and when the target direction includes the first direction and the second direction, the number of the first shape memory members 210 is more than two, wherein a part of the number of first shape memory members 210 is translated along the first direction relative to the base portion 110 during the telescopic deformation, and another part of the number of first shape memory members 210 is translated along the second direction relative to the base portion 110 during the telescopic deformation, and the first direction and the second direction are perpendicular.
In this embodiment, the target direction includes a first direction, and the movement portion 120 is driven to move in translation along the first direction by the telescopic deformation of the first shape memory element 210 relative to the base portion 110; alternatively, the target direction includes a second direction, and the movement portion 120 is driven to move in translation along the second direction by the telescopic deformation of the first shape memory element 210 relative to the base portion 110; or, the target direction includes a first direction and a second direction, at this time, more than two first shape memory elements 210 are connected between the moving portion 120 and the base portion 110, the moving portion 120 is driven to move in a translational manner along the first direction by the telescopic deformation of a part of the first shape memory elements 210, and the moving portion 120 is driven to move in a translational manner along the second direction by the telescopic deformation of another part of the first shape memory elements 210, so that the moving portion 120 can move in a translational manner along the first direction and the second direction relative to the base portion 110, that is, the image sensor 600 can move along with the moving portion 120 in two directions perpendicular to each other, so that the optical anti-shake effect of the camera module in the first direction and the second direction perpendicular to each other can be achieved, and the comprehensiveness of the optical anti-shake structure in the optical anti-shake function is improved.
When the target direction includes the first direction or the 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 and reset in a translational manner along the first direction; when the second direction is bidirectional, the first shape memory element 210 can drive the moving portion 120 to move and reset in translation along the second direction.
The specific directions of the first direction and the second direction are not limited in this application. Wherein the first direction and the second direction include, but are not limited to: the first direction is the length direction of the carrier 100, the second direction is the width direction of the carrier 100, and reference may be made to fig. 4, in which the direction a is the first direction and the direction B is the second direction; alternatively, the first direction is the width direction of the carrier 100, and the second direction is the 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 the embodiment, the moving portion 120 is provided with the first shape memory members 210 at two sides along the target direction, and the first shape memory members 210 at two sides are used for driving the moving portion 120 to move in a translational manner to the initial position at two sides along the target direction, so that optical anti-shake in the target dimension in which the target direction is located can be realized. The initial position of the moving part 120 is understood to be the position where the moving part 120 is located when there is no optical shake, such as the position shown in fig. 4.
When the target direction is the first direction, the moving portion 120 is provided with first shape memory members 210 at two sides along the first direction, and the first shape memory members 210 at two sides are used for driving the moving portion 120 to move in a translational manner to the initial position at two sides along the first direction, so as to realize optical anti-shake in a first translational dimension to which the first direction belongs. When the target direction is the second direction, the moving portion 120 is provided with the first shape memory members 210 at two sides along the second direction, and the second shape memory members 210 at two sides are used for driving the moving portion 120 to move in a translational manner to the initial position at two sides along the second direction, so as to realize 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 moving portion 120 is provided with the first shape memory members 210 at both sides along the first direction and the first shape memory members 210 at both sides along the second direction, the first shape memory members 210 located at both sides of the moving portion 120 in the first direction are used for driving the moving portion 120 to move in a translational manner towards the initial position at both sides along the first direction, and the first shape memory members 210 located at both sides of the moving portion 120 in the second direction are used for driving the moving portion 120 to move in a translational manner towards the initial position at both sides along the second direction, so that optical anti-shake in the first translational dimension and the second translational dimension is achieved, 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 moving portion 120 is provided with a first shape memory member 210 on both sides along the first direction, the first shape memory member 210 on the left side can drive the moving portion 120 to move in a 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 translational manner along the first direction at the initial position.
In some embodiments of the present application, the moving portion 120 has at least one first connection location, the base portion 110 has at least one second connection location, and one first shape memory member 210 is connected to the at least one first connection location and the at least one second connection location;
the pattern formed by connecting at least one first connecting position and at least one second connecting position is a symmetrical pattern, and the symmetrical axis of the symmetrical pattern is parallel to the target direction.
In this embodiment, the carrier 100 may be connected to a first shape memory member 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, where a pattern formed by connecting the at least one first connection position and the at least one second connection position is a symmetrical pattern, and a symmetry axis of the symmetrical pattern is parallel to the target direction, so that the direction of the force provided by the first shape memory member 210 connected to the first connection position and the second connection position to the moving portion 120 during the telescopic deformation 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 graph formed by connecting one first connecting position and the two second connecting positions is isosceles trapezoid, as shown in fig. 4; alternatively, the moving portion 120 is provided with two first connection positions, the base portion 110 is provided with a second connection position, and a graph formed by connecting the two first connection positions and the second connection position is an isosceles trapezoid. Also for example: the moving part 120 is provided with a first connection position, the base part 110 is provided with a second connection position, and a pattern formed by connecting the first connection position and the second connection position is rectangular.
When the first shape memory element 210 connected to the first connection position and the second connection position drives the moving portion 210 to translate in the first direction, the symmetry axis of the symmetrical pattern 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 translate in the second direction, the symmetry axis of the symmetrical pattern is parallel to the second direction.
When more than two first shape memory members 210 are connected between the moving portion 120 and the base portion 110, each first shape memory member 210 can be connected between the moving portion 120 and the base portion 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 part 120 and the base part 110 are all connected in the above-described manner. Of course, in other embodiments, more than two first shape memory members 210 may be connected between the moving portion 120 and the base portion 110 by different connection methods. 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 connecting at least one first connection position and at least one second connection position of one of the first shape memory members 210 is isosceles trapezoid, and an image formed by connecting at least one first connection position and at least one second connection position of the other first shape memory member 210 is rectangle, etc.
Referring to fig. 5, in some embodiments of the present application, the deformation memory further includes a second shape memory element 220, where the second shape memory element 220 connects the base portion 110 and the moving portion, and when the second shape memory element 220 is deformed in a telescopic manner, 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 the present embodiment, the second shape memory element 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 expansion and contraction deformation, so as to drive the image sensor 600 to rotate synchronously with the moving portion 120. The second shape memory element 220 can drive the moving portion 120 to rotate in one direction (clockwise or counterclockwise) or in two directions (clockwise or counterclockwise) around the third direction at the initial position, so that the optical anti-shake effect in the rotation dimension can be achieved, and the comprehensiveness of the optical anti-shake structure in the optical anti-shake function can be improved.
The rotation of the moving portion 120 around the third direction may be preferable for the moving portion 120 to rotate around the third direction, so that the complexity of the optical anti-shake structure can be reduced. Of course, in other embodiments, the rotation of the moving part 120 about the third direction may be the revolution of the moving part 120 about the third direction.
In some embodiments of the present application, the second shape memory member 220 is disposed circumferentially around at least a portion of the motion 120.
In the present embodiment, the second shape memory member 220 surrounds at least part of the moving portion 120 along the circumferential direction of the moving portion 120, so that the rotation angle of the moving portion 120 can be increased, and large-angle optical anti-shake in the rotation dimension can be realized. Referring to fig. 5, taking the moving portion 120 as an example, the second shape memory member 220 surrounds three adjacent sides of the moving portion 120, so that the moving portion 120 has a relatively large rotation angle with respect to the base portion 110.
It should be appreciated 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, with the greater the length of the portion of the second shape memory member 220 circumferentially surrounding the moving portion 120, i.e., the more portions of the second shape memory member 220 circumferentially surrounding the moving portion 120, the greater the angle of rotation of the moving portion 120 in either the clockwise or counterclockwise direction.
In some embodiments of the present application, the accommodating area is an accommodating groove 121 concavely disposed in the moving portion 120, and the accommodating groove is obliquely disposed relative to the moving portion 120 along a direction opposite to a rotation direction of the moving portion 120 under the action of the second shape memory member 220.
In this embodiment, by concavely providing the accommodating groove 121 on the side surface of the moving portion 120, the accommodating groove 121 not only can limit the image sensor 600 located therein, but also can reduce the thickness of the whole formed by the moving portion 120 and the image sensor 600, which is helpful for thinning the optical anti-shake structure and reducing the height of the camera module.
The receiving groove is disposed obliquely with respect to the moving part 120 in a direction opposite to a rotation direction of the moving part 120 by the second shape memory member 220, so that the image sensor 600 located therein is disposed obliquely with respect to the moving part 120 in the same direction as the receiving groove 121. When the moving part 120 rotates at the initial position under the action of the second shape memory member 220, the image sensor 600 can rotate from the initial position to the aligned position, i.e. the image sensor 600 can rotate in both directions at the aligned position. In this way, the movement portion 120 can realize optical anti-shake in the rotation dimension by only performing one-way rotation at the initial position, which helps to simplify the design and number of the second shape memory members 220. The alignment 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, and the accommodating groove 121 is inclined in a counterclockwise direction relative to the moving portion 120, and the alignment position of the accommodating groove 121 is parallel to the first direction.
Of course, in other embodiments, the two second shape memories 220 are provided to respectively rotate the moving portion 120 in the initial position forward and backward around the third direction, so as to achieve the optical anti-shake in the rotation dimension.
It should be understood that the image sensor 600 is disposed obliquely with respect to the adjusted position when in the initial position, and the camera module can perform anti-shake compensation by electronic anti-shake method. The initial position of the image sensor 600 is a 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 to drive the movement portion 120 to move when the temperature is raised by the power; and/or, the second shape memory member 220 is of a flexible structure, and the second shape memory member 220 is shortened in length to drive the movement portion 120 to rotate when the temperature is raised by energization.
In this 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 is capable of bending and straightening. The first shape memory member 210 and/or the second shape memory member 220 are flexible structures, and it should be understood that the shape memory members are flexible structures in a state where there is no temperature change to perform expansion and contraction deformation, i.e., the shape memory members are flexible structures in a 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 deform telescopically upon 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 presence of internal resistance, and at this time, the first shape memory member 210 is shortened in length. When the length of the first shape memory element 210 is shortened, the moving portion 120 is driven to move, i.e. the first shape memory element 210 pulls the moving portion 120 to approach; when the first shape memory member 210 is powered off and the temperature drops, the first shape memory member 210 will undergo shape recovery. Similarly, when the second shape memory element 220 is powered on, the temperature of the second shape memory element 220 increases due to the internal resistance, and the second shape memory element 220 is 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; when the second shape memory member 220 is powered off and the temperature drops, the second shape memory member 220 will undergo shape recovery.
Wherein the shapes of the first shape memory member 210 and the second shape memory member 220 include, but are not limited to, wire-shaped shape memory alloys, which are not limited in this application.
Of course, in other embodiments, the first shape memory element 210 and/or the second shape memory element 220 may be telescopic to drive the movement portion 120 to move when heated and retract to drive the movement portion 120 to reset after temperature recovery, etc.
In some embodiments of the present application, a portion of the first shape memory member 210 between the connection locations with the base portion 110 and the moving portion 120 has a first margin portion in 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 portion of a curved shape.
In this embodiment, when the first shape memory member 210 and the second shape memory member 220 are both flexible structures and the length of the first shape memory member 210 is shortened when the first shape memory member is electrified and heated, the first margin is provided on the first shape memory member 210 and the second margin is provided on the second shape memory member 220, so that the moving portion 120 can move a required distance along the first direction or the second direction under the driving of some first shape memory members 210, and is not limited by the pulling of other first shape memory members 210 or the second shape memory members 220 during the moving process, and meanwhile, the moving portion 120 can rotate a required angle under the driving of the second shape memory members 220 and is not limited by the pulling of the first shape memory members 210 during the rotating process. When the moving part 120 is driven by some of the first shape memory members 210 to move along the first direction or the second direction, the remaining portions of the first shape memory members 210 and the second shape memory members 220 gradually shrink or 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 lengths of the first allowance section and the second allowance section can be set according to the use requirement, and then large-angle optical anti-shake in two moving dimensions can be realized.
Of course, in other embodiments, when the first shape memory member 210 is of a flexible structure and the length is reduced when the temperature is raised by the power-on, the second shape memory member 220 may also be of a flexible structure and expand and contract with respect to the initial length when the temperature is changed; alternatively, when the second shape memory member 220 is of a flexible structure and the length is shortened when the temperature is raised by energizing, the first shape memory member 210 may also be of a flexible structure and expand and contract with respect to the initial length when the temperature is changed, so as to meet the requirement of the movement distance or angle of the movement portion 120 in the above dimension.
In some embodiments of the present application, an elastic portion is connected between the moving portion 120 and the base portion 110, and the elastic portion stores elastic potential energy when the moving portion 120 moves and the stored elastic potential energy is used to drive the moving portion 120 to return.
In this embodiment, the elastic portion may be used to drive the moving portion 120 to automatically reset after moving, so that the shape memory member does not need to select a type having the functions of driving the moving portion 120 to move and reset, which is helpful for increasing the selection range of the shape memory member and reducing the number of the shape memory members used. For example, the shape memory member may be selected to be flexible and shortened in length at elevated temperatures, a single shape memory member of this type being capable of driving the motion portion 120 in motion but not capable of driving the motion portion 120 in 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 is restored, the stored elastic potential energy is released to drive the moving portion 120 to automatically restore.
Of course, in other embodiments, the motion 120 is brought back by the shape memory member upon shape recovery, or the motion 120 is brought back by using other shape memory members.
In some embodiments of the present application, the base portion 110 has an opening therethrough, and the moving portion 120 is located at the opening. By the arrangement, the thickness of the whole structure formed by the base body part 110 and the moving part 120 can be reduced, the optical anti-shake structure can be thinned, and the height of the camera module is reduced.
In some embodiments of the present application, carrier 100 is a flexible circuit board comprising:
a first portion forming the moving part 120;
a second portion, which is disposed around the outer periphery of the first portion and forms a base portion 110;
at least one connection 130, the at least one connection 130 is located between the first portion and the second portion, the connection 130 is curved and connects the first portion and the second portion, and the at least one connection 130 forms an elastic portion.
In this embodiment, the carrier 100 employs a flexible circuit board structure, which may include a first portion, a second portion, and at least one connection 130. The second portion is disposed around the first portion, and has a space therebetween, and at least one connecting portion 130 is disposed 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 so that the connection portion 130 has a certain elasticity. Wherein the first portion may be used as the moving portion 120, the second portion may be used as the base portion 110, the at least one connecting portion 130 may be used as the elastic portion, and both the first portion and the at least one connecting portion 130 are located at an opening of the second portion.
The external circuit of the image sensor 600 and the power supply circuit of the shape memory element can be directly formed on the flexible circuit board structure, and no additional circuit board is required to be configured, thereby being beneficial to simplifying the structure of the camera module. It should be understood that the connection portion 130 may not only serve as an elastic portion, but may also be used for routing to form the power supply circuit and the like described above.
In some embodiments of the present application, the elastic portion includes two or more connection portions 130, and the two or more connection portions 130 are disposed at intervals along an outer circumferential direction around the first portion.
In this embodiment, the elastic portion includes more than two connection portions 130, and the more than two connection portions 130 are disposed at intervals along the peripheral direction surrounding the first portion, so that the force applied by 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 the at least one connecting portion 130 are integrally formed, wherein any two adjacent connecting portions 130 are separated by a hollow portion 140. Thus, the carrier 100 can be easily processed.
The processing of the carrier 100 includes, but is not limited to: the carrier 100 of this embodiment can be manufactured by providing the hollowed-out portion 140 on the prefabricated 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 at a side of the carrier 100 away from the accommodation 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 fit with the moving portion 120, where the plurality of supporting members are not disposed in parallel and are disposed at a level away from one end of the mounting base 300.
In the present embodiment, the mounting seat 300 is located on a side of the carrier 100 away from the accommodating area, and is used for carrying and mounting the carrier 100. A plurality of supporting members are disposed between the mounting base 300 and the moving portion 120, and the plurality of supporting members are used for supporting the moving portion 120 together. Wherein, the plurality of supporting members are not parallel to each other and are disposed at the same level away from the mounting base 300, that is, one end of the plurality of supporting members away from the mounting base 300 is formed with a supporting plane together, so that the moving portion 120 can move stably on the supporting plane formed by the plurality of supporting members and can keep parallel to the supporting 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 member is a ball 320, and a plurality of positioning grooves 310 are disposed at one end of the mounting base 300 near the moving portion 120 or one end of the moving portion 120 near the mounting base 300, wherein the plurality of 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 of a ball 320 structure, which not only can reduce contact wear between the supporting member and the moving portion 120 and prolong the service life of the supporting member and the moving portion, but also can make the movement of the moving portion 120 on the supporting member smoother and smoother, thereby being beneficial to improving the imaging stability of the camera module.
The mounting seat 300 is close to one end of the moving portion 120 or one end of the moving portion 120 close to the mounting seat 300 is provided with a plurality of positioning grooves 310, a plurality of balls 320 are respectively mounted on 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 seat 300 and the carrier 100. Wherein, the positioning groove 310 may be preferably disposed on the mounting seat 300, so as to facilitate the assembly among the carrier 100, the mounting seat 300 and the balls 320.
In addition, the moving portion 120 is concavely provided with a plurality of movable grooves 123 near the side surface of the mounting seat 300, the plurality of movable grooves 123 are arranged in one-to-one correspondence with the plurality of positioning grooves 310, 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 seat 300 and the carrier 100. Wherein, the balls 320 are in clearance fit with the movable grooves 123, so as to avoid the balls 320 from limiting the movement of the moving part 120.
In some embodiments of the present application, the connection positions of the moving part 120 and the base part 110 with the first shape memory member 210 are respectively provided with a conductive first clamping member 150, and the first shape memory member 210 is clamped by the first clamping member 150; the connection positions of the moving part 120 and the base part 110 with the second shape memory element 220 are respectively provided with a conductive second clamping element 160, and the second shape memory element 220 is clamped by the second clamping element 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 during the expansion and contraction deformation, 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 during the expansion and contraction deformation, 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 of 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 first shape memory member 210 has little influence on the connection strength of the electrical connection point between the first clamping member 150 and the first power supply circuit during telescopic deformation, and the electrical connection strength and stability between the first shape memory member 210 and the first power supply circuit are ensured. The second clamping member 160 is of 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 second shape memory member 220 has little influence on the connection strength of the electrical connection point between the second clamping member 160 and the second power supply circuit during telescopic deformation, and the electrical connection strength and stability between the second shape memory member 220 and the second power supply circuit are ensured.
When the carrier 100 is of a flexible circuit board structure, the first clamping member 150 and the second clamping member 160 may be directly welded on the carrier 100 and connected to the first power supply circuit and the second power supply circuit in the flexible circuit board respectively.
The structures of the first clamping member 150 and the second clamping member 160 may be a wire clip structure, which is not limited in this application.
In some embodiments of the present application, a side of the moving portion 120 near or far from the accommodating area is provided with a limiting protruding portion, the limiting protruding portion is provided with a limiting groove, and the second shape memory member 220 surrounds the limiting protruding portion and is located in the limiting groove.
In this embodiment, by arranging the limiting protruding portion on the moving portion 120, the second shape memory member 220 surrounds the limiting protruding portion and is located in the limiting groove, which not only increases the area of the moving portion 120 around which the second shape memory member 220 can surround, but also limits the second shape memory member 220 through the limiting groove, thereby avoiding the second shape memory member 220 from separating from the moving portion 120, and improving the stability of the second shape memory member 220 surrounding the moving portion 120. Particularly, 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 boss.
The limiting protrusion portion includes more than two limiting protrusions 122, and the more than two limiting protrusions 122 are disposed at intervals along the circumferential edge of the moving portion 120. The limit groove may be provided on one or more limit protrusions 122.
In some embodiments of the present application, the first shape memory member 210 is located on a side of the moving portion 120 away from the limit projection. By the arrangement, a larger interval exists between the first shape memory element 210 and the second shape memory element 220, so that interference between the first shape memory element 210 and the second shape memory element is avoided, and assembly is facilitated.
2-5, the first shape memory member 210 is located on a side of the moving portion 120 near the mounting base 300, and the limiting protrusion is located on a side of the moving portion 120 far from the mounting base 300.
In some embodiments of the present application, three hall sensors are disposed on a side of the moving portion 120, which is close to the mounting base 300, and three hall magnets are disposed on a side of the mounting base 300, which is close to the moving portion 120, in a one-to-one correspondence manner.
In this embodiment, the real-time position of the image sensor 600 can be obtained by matching the hall sensor and the hall magnet, so as to ensure that the image sensor 600 moves to an accurate position. The hall sensor cuts the magnetic field of the corresponding hall magnet when moving along with the moving part 120 and determines the real-time position of the image sensor 600 according to the magnetic field variation 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 relatively arranged to obtain 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 relatively arranged to obtain 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 relatively arranged to obtain 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 the present embodiment, the image sensor 600 is accommodated in the accommodating area of the optical anti-shake structure, the driving motor 800 is mounted on the carrier 100, the lens 900 is mounted on the driving motor 800, 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 optical filter 700 to reach the image sensor 600, and the image sensor 600 is driven to move through the shape memory member to realize optical anti-shake.
The embodiment of the application also provides terminal equipment, which comprises a 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 appreciated that references herein to the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are intended to be based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "plurality" is three or more, and "more" includes the present number.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.
Claims (10)
1. An optical anti-shake structure, comprising:
a carrier including a base portion and a moving portion having a receiving area for receiving 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 in a telescopic manner; the shape memory member comprises a first shape memory member, the first shape memory member is connected with the base body part and the moving part, and the moving part moves in a translational way along a target direction relative to the base body part when the first shape memory member is deformed in a telescopic way; the first shape memory element forms a symmetrical graph, and the symmetrical axis of the symmetrical graph is parallel to the target direction; the target direction comprises a first direction and/or a second direction, and the first direction is perpendicular to the second direction; when the target direction comprises the first direction and the second direction, the number of the first shape memory pieces is more than two, wherein a part of the first shape memory pieces move in a translational manner along the first direction relative to the base part when in telescopic deformation, and the other part of the first shape memory pieces move in a translational manner along the second direction relative to the base part when in telescopic deformation;
The shape memory member further comprises a second shape memory member, the second shape memory member is connected with the base body part and the moving part, and the moving part rotates around a third direction relative to the base body part when the second shape memory member is deformed in a telescopic manner; the second shape memory element is circumferentially arranged around at least part of the moving part; the third direction is perpendicular to the first direction and the second direction.
2. The optical anti-shake structure according to claim 1, wherein the moving portion is provided with the first shape memory member on both sides in the target direction.
3. The optical anti-shake structure of claim 1, wherein the motion section has at least one first connection location, the base section has at least one second connection location, and one of the first shape memory members is connected to the at least one first connection location and the at least one second connection location;
the pattern formed by connecting the at least one first connecting position and the at least one second connecting position is a symmetrical pattern.
4. The optical anti-shake structure according to claim 1, wherein the accommodating area is an accommodating groove provided in the moving portion, and the accommodating groove is obliquely provided relative 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.
5. The optical anti-shake structure according to claim 1, wherein an elastic portion is connected between the moving portion and the base portion, the elastic portion stores elastic potential energy when the moving portion moves, and the stored elastic potential energy is used for driving the moving portion to reset.
6. The optical anti-shake structure of claim 5, wherein the carrier is a flexible circuit board comprising:
a first portion forming the moving part;
a second portion surrounding the outer periphery of the first portion, the second portion forming the base portion;
at least one connecting portion located between the first portion and the second portion, the connecting portion being provided in a curved manner and connecting the first portion and the second portion, the at least one connecting portion forming the elastic portion.
7. The optical anti-shake structure according to claim 6, further comprising a mounting base, wherein the mounting base is located at a side, away from the accommodating area, of the carrier, the carrier is mounted on the mounting base, a plurality of supporting pieces are arranged between the mounting base and the moving portion and are in supporting fit with the moving portion, and the plurality of supporting pieces are arranged in a non-parallel manner and are arranged at a level away from one end of the mounting base.
8. The optical anti-shake structure according to claim 7, wherein the supporting member is a ball, a plurality of positioning grooves are formed in one end of the mounting base, which is close to the moving portion, or one end of the moving portion, which is close to the mounting base, and the plurality of balls are respectively mounted in the plurality of positioning grooves, and the balls are in positioning fit with the corresponding positioning grooves.
9. A camera module comprising an optical anti-shake structure according to any of claims 1-8.
10. A terminal device comprising a camera module according to claim 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011010248.8A CN114257710B (en) | 2020-09-23 | 2020-09-23 | Optical anti-shake structure and camera module and terminal equipment with same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011010248.8A CN114257710B (en) | 2020-09-23 | 2020-09-23 | Optical anti-shake structure and camera module and terminal equipment with same |
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| CN114257710A CN114257710A (en) | 2022-03-29 |
| CN114257710B true CN114257710B (en) | 2024-02-20 |
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| CN115633240A (en) * | 2022-10-20 | 2023-01-20 | Oppo广东移动通信有限公司 | Anti-shake subassembly, module and electronic equipment of making a video recording |
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| CN114257710A (en) | 2022-03-29 |
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