CN108427236B - Elastic element, anti-shake focusing device and camera module - Google Patents

Elastic element, anti-shake focusing device and camera module Download PDF

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Publication number
CN108427236B
CN108427236B CN201810349963.0A CN201810349963A CN108427236B CN 108427236 B CN108427236 B CN 108427236B CN 201810349963 A CN201810349963 A CN 201810349963A CN 108427236 B CN108427236 B CN 108427236B
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shake
focusing
magnetic field
elastic element
movable assembly
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CN108427236A (en
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谢荣富
林金鸿
李山萌
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Truly Opto Electronics Ltd
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Truly Opto Electronics Ltd
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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B5/00Adjustment of optical system relative to image or object surface other than for focusing
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32Means for focusing
    • G03B13/34Power focusing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • H04N23/68Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H04N23/682Vibration or motion blur correction
    • H04N23/685Vibration or motion blur correction performed by mechanical compensation
    • H04N23/687Vibration or motion blur correction performed by mechanical compensation by shifting the lens or sensor position

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • Adjustment Of Camera Lenses (AREA)
  • Lens Barrels (AREA)

Abstract

The invention discloses an elastic element, an anti-shake focusing device and a camera module. The elastic element is used for the anti-shake focusing device and is a double-layer annular integrated structure made of elastic materials, wherein the first annular structure is used for fixedly connecting a movable assembly of the anti-shake focusing device, and the second annular structure is used for fixedly connecting a fixed assembly of the anti-shake focusing device; the first annular structure and the second annular structure are connected and suspended with each other through a suspension structure. The elastic element has the advantages of low requirement on manufacturing precision, high product yield, long fatigue life, simplicity in assembly, good reliability and the like.

Description

Elastic element, anti-shake focusing device and camera module
Technical Field
The invention relates to the field of camera shooting, in particular to an elastic element, an anti-shake focusing device and a camera shooting module.
Background
At present, in the field of mobile phone camera shooting, an OIS motor is generally used to realize anti-shake and focusing of a lens. The conventional OIS motor mainly comprises an anti-shake rotor and an anti-shake stator, wherein the anti-shake rotor is used for bearing a lens and generating a permanent magnetic field, the anti-shake stator is electrified to generate an anti-shake variable magnetic field, and the anti-shake rotor is driven to move on an anti-shake plane by the interaction force between the permanent magnetic field of the anti-shake rotor and the anti-shake variable magnetic field of the anti-shake stator. In addition, the anti-shake mover mainly comprises a focusing mover for bearing a lens and generating a focusing variable magnetic field by electrifying and a focusing stator for generating a permanent magnetic field, and the focusing stator is driven to move in the focusing direction by the interaction force between the variable magnetic field of the focusing mover and the permanent magnetic field of the focusing stator.
The anti-shake rotor is connected with the anti-shake stator through four metal columns and supported above the anti-shake stator, acting forces of the four metal columns and a first mutual acting force between the permanent magnetic field and the anti-shake variable magnetic field form a pair of balance forces, and the anti-shake rotor is controlled to be kept at an anti-shake position jointly. In addition, the focusing rotor and the focusing stator are connected through a metal elastic sheet, the elastic force of the metal elastic sheet and a second interaction force between the permanent magnetic field and the focusing variable magnetic field form a pair of balance forces, and the focusing rotor is controlled to be kept at a focusing position together.
Because the metal material is hard, the metal column and the metal spring made of the metal material have good linearity, but have short fatigue life, and the metal column is fine, has high requirement on welding precision and great difficulty, and has low welding reliability; in order to make the metal elastic sheet have elasticity, complex elastic wire structures need to be manufactured between an inner ring used for being connected with the focusing rotor and an outer ring used for being connected with the focusing stator so as to obtain the elasticity in the focusing direction, the complex elastic wire structures have high requirements on manufacturing precision, the process of assembling the metal elastic sheet is complicated and complicated, the connection reliability is low, and finally the overall yield of products is low and the price is high.
Disclosure of Invention
In order to solve the above-mentioned deficiencies of the prior art, the present invention provides an elastic element, an anti-shake focusing device and a camera module. The elastic element has the advantages of low requirement on manufacturing precision, high product yield, long fatigue life, simplicity in assembly, good reliability and the like.
The technical problem to be solved by the invention is realized by the following technical scheme:
an elastic element is used for an anti-shake focusing device and is a double-layer annular integrated structure made of elastic materials, wherein a first annular structure of the elastic element is used for fixedly connecting a movable assembly of the anti-shake focusing device, and a second annular structure of the elastic element is used for fixedly connecting a fixed assembly of the anti-shake focusing device; the first annular structure and the second annular structure are connected and suspended with each other through a suspension structure.
Further, the suspension structure comprises a number of suspension wires.
Further, the inner side of the first annular structure is used for fixedly connecting the movable assembly, and the outer side of the first annular structure is used for fixedly connecting the suspension structure.
Furthermore, at least one folding ring structure which is concentric with the first annular structure is arranged between the inner side and the outer side of the first annular structure.
An anti-shake focusing apparatus comprising:
the movable assembly is used for generating a permanent magnetic field and bearing a lens;
the fixing component is used for generating an anti-shake variable magnetic field for anti-shake by electrifying;
the upper elastic element is used for fixedly connecting the upper end of the movable component and the upper end of the fixed component;
the lower elastic element is used for fixedly connecting the lower end of the movable component and the lower end of the fixed component;
the first interaction force between the permanent magnetic field and the anti-shake variable magnetic field drives the movable assembly to move on the anti-shake plane, and the tension of the suspension structure of the upper elastic element and the lower elastic element and the first interaction force between the permanent magnetic field and the anti-shake variable magnetic field form a pair of balance forces to jointly control the movable assembly to be kept at an anti-shake position; wherein, the upper elastic element and the lower elastic element are both the elastic elements.
Further, the fixing assembly includes:
the circuit board is positioned below the movable assembly; and a circuit board arranged on the circuit board
The Hall element group is used for sensing the permanent magnetic field of the movable assembly so as to determine the position of the movable assembly on the anti-shake plane;
and the anti-shake coil group is used for generating an anti-shake variable magnetic field for anti-shake by electrifying so as to drive the movable assembly to move on the anti-shake plane.
Further, the fixing component is also used for generating a focusing variable magnetic field for focusing when being electrified; the second interaction force between the permanent magnetic field and the focusing variable magnetic field drives the movable assembly to move in the focusing direction, and the elastic force of the first annular structures of the upper elastic element and the lower elastic element and the second interaction force between the permanent magnetic field and the focusing variable magnetic field form a pair of balance forces to jointly control the movable assembly to be kept at the focusing position.
Further, the fixed component also comprises a ring-shaped moving component surrounding the periphery of the moving component
And the focusing coil is used for electrifying to generate a focusing variable magnetic field for focusing so as to drive the movable assembly to move in the focusing direction.
Further, the movable assembly comprises:
a carrier for carrying a lens;
and the permanent magnet group is used for generating a permanent magnetic field and is fixedly arranged on the carrier.
A camera module comprises the anti-shake focusing device.
The invention has the following beneficial effects: the elastic element is used in the anti-shake focusing device to connect the movable assembly and the fixed assembly, is made of elastic materials by adopting an integral forming process, and the suspension structure and the first annular structure and the second annular structure are respectively of an integral structure, so that later welding is not needed like a metal column in the prior art, the requirement on manufacturing precision is low, and the reliability is high; the suspension structure utilizes the characteristic that elastic materials are easy to bend and hard to stretch, plays a role in suspending the movable assembly after assembly, suspends the movable assembly on an anti-shake plane, and cooperates with the anti-shake driving force of the fixed assembly by self-pulling force to jointly complete the anti-shake function; the area of the fixed connection between the first annular structure and the movable assembly and the area of the fixed connection between the second annular structure and the fixed assembly are large, the requirement on assembly precision is low, the assembly stability is good, and the product yield is high; the elastic material has long fatigue life and can bear repeated reciprocating stretching and pulling.
Drawings
FIG. 1 is a perspective view of a spring element provided in accordance with the present invention;
FIG. 2 is a cross-sectional view of a spring element provided in accordance with the present invention;
FIG. 3 is an exploded view of the anti-shake focusing apparatus provided in the present invention;
fig. 4 is a cross-sectional view of the anti-shake focusing apparatus provided in the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Example one
As shown in fig. 1 and 2, an elastic element 3 for an anti-shake focusing device is a double-layer annular integrated structure made of an elastic material, and a first annular structure 31 is used for fixedly connecting a movable component of the anti-shake focusing device, and a second annular structure 32 is used for fixedly connecting a fixed component of the anti-shake focusing device; the first annular structure 31 and the second annular structure 32 are connected and suspended with each other by a suspension structure 33.
The elastic element 3 is used in the anti-shake focusing device to connect the movable component and the fixed component, is made of elastic material by adopting an integral forming process, the suspension structure 33 and the first annular structure 31 and the second annular structure 32 are respectively of an integral structure, and does not need to be welded in the later period like a metal column in the prior art, so that the requirements on manufacturing precision are low, and the reliability is high; the suspension structure 33 has a suspension effect on the movable assembly after assembly by utilizing the characteristic that an elastic material is easy to bend and difficult to stretch, the movable assembly is suspended on the anti-shake plane XY, and the anti-shake function is completed by matching the self-pulling force with the anti-shake driving force of the fixed assembly; the areas of the fixed connection between the first annular structure 31 and the movable assembly and between the second annular structure 32 and the fixed assembly are large, the requirement on the assembly precision is low, the assembly stability is good, and the product yield is high.
In addition, the elastic material has long fatigue life, for example, the rubber or plastic polymer material has good fatigue life and can bear repeated reciprocating stretching and pulling, and even the rubber polymer material is widely applied to the shock absorption system of the vehicle.
The elastic element 3 is preferably, but not limited to, manufactured by an injection molding process, and may be made of a plastic material such as PET, PC, PEEK, PES, PSC, or PEN, or a rubber material such as thermoplastic dynamic vulcanized rubber or nitrile rubber, or may be made of a silicone rubber material, or may be made of a nitrile rubber material having a small elastic modulus and being easily deformed by stress, and has a large tensile strength and is less likely to be locally plastically deformed.
In particular, the first annular structure 31 and the second annular structure 32 are both annular structures, but they do not mean that the inner and outer contours of both are circular, but mean that both have a ring-like structure formed by having a light-passing hole at the center, and the inner and outer contours of both may be circular or polygonal, depending on the assembly surface on the movable component and the fixed component of the anti-shake focusing device.
The suspension structure 33 comprises a plurality of suspension wires, which are uniformly arranged in a ring between the first ring structure 31 and the second ring structure 32. In this embodiment, the elastic element 3 uses four suspension wires uniformly arranged along a ring to connect and suspend the first ring structure 31 and the second ring structure 32.
The thickness and length of the suspension wire are determined according to the specific situation, and it is appropriate to match the elasticity of the material of the elastic element 3 to make the anti-shake driving current of the anti-shake focusing device and the displacement of the movable assembly on the anti-shake plane XY be in a direct proportion.
The inner side of the first ring-shaped structure 31 is used for fixedly connecting the movable component, and the outer side is used for fixedly connecting the suspension structure.
The first annular structure 31 is used for completing a focusing function by matching the self material elastic force with the focusing driving force of the fixing component, the elastic force can be obtained without manufacturing a complex elastic wire structure like a metal elastic sheet in the prior art, the requirement on manufacturing precision is low, the assembling process is simple, and the connection reliability is good.
Preferably, the first annular structure 31 has at least one corrugated structure 311 concentric with the inner side and the outer side, and the cross section of the corrugated structure 311 includes but is not limited to a C shape, a U shape, a W shape or an S shape.
The folded ring structure 311 can reduce the elastic coefficient of the first annular structure 31 in the focusing direction Z, so that the first annular structure 31 is easily deformed when being stressed in the focusing direction Z, the focusing driving current required by the anti-shake focusing device is reduced, and the electric quantity is saved; it is also possible to increase the elastic coefficient of the first annular structure 31 in the anti-shake plane XY so that the movable assembly does not suffer from optical axis deviation, shake, tilt, etc. after reaching the anti-shake position.
The inner end of the corrugated structure 311 is connected to the inner side of the first annular structure 31 or another corrugated structure 311 adjacent to the inner end, and the outer end is connected to the outer side of the first annular structure 31 or another corrugated structure 311 adjacent to the outer end.
The edge structure 311 may be raised upward or downward, or may be raised both upward and downward, but should avoid other internal elements of the anti-shake focusing device as much as possible so as not to generate structural interference with other internal elements; as for the width and height of the edge structure 311, it is preferable that the width and height are proportional to each other, and the elastic element 3 is matched with the material elasticity thereof, so that the focusing driving current of the anti-shake focusing apparatus and the displacement of the movable element in the focusing direction Z are proportional to each other.
Example two
As shown in fig. 3 and 4, an anti-shake focusing apparatus includes:
the movable assembly is used for generating a permanent magnetic field and bearing a lens;
the fixing component is used for generating an anti-shake variable magnetic field for anti-shake and a focusing variable magnetic field for focusing by electrifying;
the upper elastic element 3B is used for fixedly connecting the upper end of the movable component and the upper end of the fixed component;
the lower elastic element 3A is used for fixedly connecting the lower end of the movable component and the lower end of the fixed component;
the first interaction force between the permanent magnetic field and the anti-shake variable magnetic field drives the movable assembly to move on the anti-shake plane XY, the tension of the suspension structure 33 of the upper elastic element 3B and the lower elastic element 3A and the first interaction force between the permanent magnetic field and the anti-shake variable magnetic field form a pair of balance forces, and the movable assembly is controlled to be kept at an anti-shake position together; the second interaction force between the permanent magnetic field and the focusing variable magnetic field drives the movable assembly to move in the focusing direction Z, the elastic force of the first annular structure 31 of the upper elastic element 3B and the lower elastic element 3A and the second interaction force between the permanent magnetic field and the focusing variable magnetic field form a pair of balance forces, and the movable assembly is controlled to be kept at the focusing position together; wherein, the upper elastic element 3B and the lower elastic element 3A are both the elastic elements 3 described in the first embodiment.
The anti-shake focusing device connects the movable component and the fixed component together through the upper elastic element 3B at the upper part and the lower elastic element 3A at the lower part.
During anti-shake:
the suspension structure 33 of the upper elastic element 3B generates a first pulling force on the movable assembly, the suspension structure 33 of the lower elastic element 3A generates a second pulling force on the movable assembly, and the first pulling force and the second pulling force suspend the movable assembly on the anti-shake plane XY.
When the lens is upward for shooting, the movable assembly is suspended on the anti-shake plane XY under the action of a first pulling force generated by the upper elastic element 3B, when the lens is downward for shooting, the movable assembly is suspended on the anti-shake plane XY under the action of a second pulling force generated by the lower elastic element 3A, and when the lens is horizontally for shooting, the movable assembly is suspended on the anti-shake plane XY under the combined action of the first pulling force generated by the upper elastic element 3B and the second pulling force generated by the lower elastic element 3A.
Then, the movable assembly is driven to move on the anti-shake plane XY by using a first interaction force between the permanent magnetic field of the movable assembly and the anti-shake variable magnetic field of the fixed assembly, and a pair of balance forces are formed by the tension of the suspension structure 33 of the upper elastic element 3B and the lower elastic element 3A and the first interaction force between the permanent magnetic field and the anti-shake variable magnetic field, so that the movable assembly is controlled to be kept at the anti-shake position.
In focusing:
the anti-shake focusing device keeps the movable assembly in the focusing direction Z by the elastic force of the first annular structure 31 of the upper elastic element 3A and the lower elastic element 3B, and reduces the elastic coefficient in the focusing direction Z between the inner side and the outer side of the annular structure 31 and improves the elastic coefficient in the anti-shake plane XY by the folded ring structure 311, so that the movable assembly and the first annular structure 311 are easier to move relatively in the focusing direction Z and are harder to move relatively in the anti-shake plane XY.
Then, the movable assembly is driven to move in the focusing direction Z by utilizing a second interaction force between the permanent magnetic field of the movable assembly and the focusing variable magnetic field of the fixed assembly, and the elastic force of the first annular structure 31 of the upper elastic element 3B and the lower elastic element 3A and the second interaction force between the permanent magnetic field and the focusing variable magnetic field form a pair of balance forces to jointly control the movable assembly to be kept at the focusing position.
Specifically, the fixing assembly includes:
a circuit board 24 located below the movable assembly; and is provided on the wiring board 24
The Hall element group is used for sensing the permanent magnetic field of the movable assembly so as to determine the position of the movable assembly on an anti-shake plane XY; and
the anti-shake coil group is used for generating an anti-shake variable magnetic field for anti-shake by electrifying so as to drive the movable assembly to move on an anti-shake plane XY; and around the periphery of the movable member
And a focusing coil 22 for energizing to generate a focusing variable magnetic field for focusing to drive the movable assembly to move in the focusing direction Z.
In this embodiment, the hall element group includes two hall elements 26, which are arranged on two side edges of the circuit board 24 in a 90 ° offset manner, and are respectively used for sensing the positions of the movable assembly in the X direction and the Y direction of the anti-shake plane XY; the anti-shake coil group comprises four anti-shake coils 25 which are arranged on four side edges of the circuit board 24 in a 90-degree offset manner, and two opposite anti-shake coils 25 are a group and are respectively used for driving the movable assembly to move in the X direction and the Y direction of the anti-shake plane XY.
The fixing component further comprises a base 21 and a shell 27 sleeved on the base 21, and the second annular structure 32 of the lower elastic element 3A and the circuit board 24 are fixedly arranged on the base 21.
According to specific structure, in this embodiment, the second annular structure 32 of the lower elastic element 3A is fixedly disposed on the base 21, and the circuit board 24 is fixedly disposed on the second annular structure 32 of the lower elastic element 3A.
The fixing assembly further comprises an annular support 23 for winding the focusing coil 22. The annular support 23 can be fixed on the base 21 by injection molding, clamping or bonding, and the second annular structure 32 of the upper elastic element 3B is fixed on the top of the annular support 23.
The anti-shake focusing device simplifies a two-stage structure in the prior art into a one-stage structure, takes an anti-shake stator corresponding to an anti-shake function and a focusing stator corresponding to a focusing function as the same fixed component, and takes an anti-shake mover corresponding to the anti-shake function and a focusing mover corresponding to the focusing function as the same movable component, so that the structure and the assembly are greatly simplified; the focusing coil 22 is used as a part of a fixing component, and is directly electrically connected with the circuit board 24 after being wound on the annular bracket 23, so that the problem of electric connection of the focusing coil 22 after a metal elastic sheet and a metal column are cancelled is solved, and the electric connection stability of the focusing coil 22 is also improved.
Specifically, the movable assembly includes:
a carrier 11 for carrying a lens;
and the permanent magnet group is used for generating a permanent magnetic field and is fixedly arranged on the carrier 11.
In this embodiment, the permanent magnet group includes four permanent magnets 12, which are arranged on four sides of the carrier 11 in a 90 ° offset manner.
The inner side of the first ring-shaped structure 31 of the upper elastic element 3B is fixedly connected to the top of the carrier 11, and the inner side of the first ring-shaped structure 31 of the lower elastic element 3A is fixedly connected to the bottom of the carrier 11.
The upper elastic element 3B and the lower elastic element 3A may be connected and fixed with the base 21, the carrier 11 or the annular bracket 23 by means of dispensing or hot riveting, etc.
EXAMPLE III
A camera module, comprising the anti-shake focusing apparatus of the second embodiment.
The above-mentioned embodiments only express the embodiments of the present invention, and the description is more specific and detailed, but not understood as the limitation of the patent scope of the present invention, but all the technical solutions obtained by using the equivalent substitution or the equivalent transformation should fall within the protection scope of the present invention.

Claims (8)

1. An elastic element is used for an anti-shake focusing device and is characterized in that the elastic element is a double-layer annular integrated structure made of elastic materials, wherein a first annular structure of the elastic element is used for fixedly connecting a movable assembly of the anti-shake focusing device, and a second annular structure of the elastic element is used for fixedly connecting a fixed assembly of the anti-shake focusing device; the first annular structure and the second annular structure are connected and suspended with each other through a suspension structure; the inner side of the first annular structure is fixedly connected with the movable assembly, and the outer side of the first annular structure is fixedly connected with the suspension structure; at least one folding ring structure which is concentric with the first annular structure is arranged between the inner side and the outer side of the first annular structure, and the folding ring structure is raised relative to the plane of the first annular structure.
2. The spring element of claim 1, wherein the suspension structure comprises a plurality of suspension wires.
3. An anti-shake focusing apparatus, comprising:
the movable assembly is used for generating a permanent magnetic field and bearing a lens;
the fixing component is used for generating an anti-shake variable magnetic field for anti-shake by electrifying;
the upper elastic element is used for fixedly connecting the upper end of the movable component and the upper end of the fixed component;
the lower elastic element is used for fixedly connecting the lower end of the movable component and the lower end of the fixed component;
the first interaction force between the permanent magnetic field and the anti-shake variable magnetic field drives the movable assembly to move on the anti-shake plane, and the tension of the suspension structure of the upper elastic element and the lower elastic element and the first interaction force between the permanent magnetic field and the anti-shake variable magnetic field form a pair of balance forces to jointly control the movable assembly to be kept at an anti-shake position; wherein the upper and lower elastic elements are both the elastic element of claim 1 or 2.
4. The anti-shake focusing apparatus according to claim 3, wherein the fixing assembly comprises:
the circuit board is positioned below the movable assembly; and a circuit board arranged on the circuit board
The Hall element group is used for sensing the permanent magnetic field of the movable assembly so as to determine the position of the movable assembly on the anti-shake plane;
and the anti-shake coil group is used for generating an anti-shake variable magnetic field for anti-shake by electrifying so as to drive the movable assembly to move on the anti-shake plane.
5. The anti-shake focusing apparatus according to claim 3 or 4, wherein the fixing assembly is further configured to generate a focusing variable magnetic field for focusing when energized; the second interaction force between the permanent magnetic field and the focusing variable magnetic field drives the movable assembly to move in the focusing direction, and the elastic force of the first annular structures of the upper elastic element and the lower elastic element and the second interaction force between the permanent magnetic field and the focusing variable magnetic field form a pair of balance forces to jointly control the movable assembly to be kept at the focusing position.
6. The anti-shake focusing apparatus according to claim 5, wherein the fixed assembly further comprises a ring surrounding the periphery of the movable assembly
And the focusing coil is used for electrifying to generate a focusing variable magnetic field for focusing so as to drive the movable assembly to move in the focusing direction.
7. The anti-shake focusing apparatus according to claim 3, wherein the movable assembly comprises:
a carrier for carrying a lens;
and the permanent magnet group is used for generating a permanent magnetic field and is fixedly arranged on the carrier.
8. A camera module, characterized in that it comprises an anti-shake focusing device according to any one of claims 3-7.
CN201810349963.0A 2018-04-18 2018-04-18 Elastic element, anti-shake focusing device and camera module Active CN108427236B (en)

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CN213365159U (en) * 2020-12-08 2021-06-04 常州市瑞泰光电有限公司 Lens driving device and electronic terminal

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CN102629815A (en) * 2011-02-07 2012-08-08 Lg伊诺特有限公司 Multifunctional voice coil motor
CN106817007A (en) * 2017-03-30 2017-06-09 信利光电股份有限公司 A kind of OIS voice coil motors

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