WO2022000539A1 - 光学装置 - Google Patents

光学装置 Download PDF

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Publication number
WO2022000539A1
WO2022000539A1 PCT/CN2020/101473 CN2020101473W WO2022000539A1 WO 2022000539 A1 WO2022000539 A1 WO 2022000539A1 CN 2020101473 W CN2020101473 W CN 2020101473W WO 2022000539 A1 WO2022000539 A1 WO 2022000539A1
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WIPO (PCT)
Prior art keywords
magnetic levitation
magnetic
optical device
lens module
casing
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PCT/CN2020/101473
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English (en)
French (fr)
Inventor
史卫领
郭顺
王洪兴
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诚瑞光学(常州)股份有限公司
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Publication of WO2022000539A1 publication Critical patent/WO2022000539A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • 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

Definitions

  • the utility model relates to the technical field of optical anti-shake, in particular to an optical device.
  • the lens module of the existing optical device is generally connected to the fixed housing through a hemispherical structure.
  • One end of the hemispherical structure is a hemispherical protrusion, and the other end is a correspondingly arranged groove.
  • the utility model provides an optical device. By replacing the traditional hemispherical structure with a magnetic levitation fulcrum structure, the frictional resistance is reduced, the wear is avoided, and the purpose of optical anti-shake is achieved.
  • the optical device provided by the utility model comprises a casing with an accommodation space, a lens module accommodated in the accommodation space, a spring device and a driving device; the spring device is respectively connected with the lens module and the casing, The spring device is used to support the lens module; a driving device for pushing the lens module to rotate is arranged between the lens module and the casing; the optical device further comprises a a magnetic suspension fulcrum structure between the module and the housing, the magnetic suspension fulcrum structure includes a first magnetic suspension structure and a second magnetic suspension structure corresponding to it, the first magnetic suspension structure is fixedly arranged on the lens module, The second magnetic levitation structure is fixedly arranged on the casing, and the first magnetic levitation structure and the second magnetic levitation structure are arranged opposite to each other in the same pole, so as to generate a magnetic repulsion force to make the first magnetic levitation structure and the second magnetic levitation structure
  • the structures are not in direct contact with each other.
  • the first magnetic suspension structure and the second magnetic suspension structure are permanent magnets.
  • the first magnetic suspension structure is an electromagnetic structure
  • the second magnetic suspension structure is a permanent magnet
  • the first magnetic suspension structure is a permanent magnet
  • the second magnetic suspension structure is an electromagnetic structure
  • the first magnetic suspension structure and the second magnetic suspension structure are electromagnetic structures.
  • the electromagnetic structure includes an iron core and a coil wound around the iron core, and the coil cooperates with the iron core to generate a magnetic field when energized.
  • the casing includes a side wall, a casing cover plate and a casing bottom surface connected with the side wall to form the receiving space, and the second magnetic suspension structure is fixedly arranged on the casing bottom surface.
  • the first magnetic suspension structure is a hemispherical protrusion
  • the second magnetic suspension structure is a hemispherical groove
  • the optical device provided by the present invention uses the magnetic levitation pivot structure to replace the traditional hemispherical structure, so as to reduce frictional resistance, avoid wear and tear, and thus achieve the purpose of optical anti-shake.
  • FIG. 1 is a schematic structural diagram of an optical device according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of the separation of the housing of the optical device in FIG. 1;
  • FIG. 3 is a schematic cross-sectional view of the optical device along A-A in FIG. 1 according to Embodiment 1 of the present invention
  • Fig. 4 is the enlarged schematic diagram of part B in Fig. 2;
  • FIG. 5 is a schematic cross-sectional view of the optical device along A-A in FIG. 1 according to Embodiment 2 of the present invention.
  • FIG. 6 is a schematic cross-sectional view of the optical device along A-A in FIG. 1 according to Embodiment 3 of the present invention.
  • FIG. 7 is a schematic cross-sectional view of the optical device along A-A in FIG. 1 according to Embodiment 4 of the present invention.
  • the present invention provides an optical device 100 .
  • the optical device 100 includes a housing 10 having an accommodation space 1 and a lens accommodated in the accommodation space 1 .
  • the A driving device 40 for pushing the lens module 20 to rotate is disposed between the lens module 20 and the casing 10 ;
  • the optical device 100 further includes a driving device 40 disposed between the lens module 20 and the casing 10 .
  • the magnetic levitation pivot structure 50 between the two, the magnetic levitation pivot structure 50 includes a first magnetic levitation structure 51 and a second magnetic levitation structure 52 correspondingly arranged therewith, the first magnetic levitation structure 51 is fixed on the lens module 20, and the first magnetic levitation structure 51 is fixed on the lens module 20.
  • Two magnetic levitation structures 52 are fixed on the casing 10 , and the first magnetic levitation structure 51 and the second magnetic levitation structure 52 are disposed opposite to each other in the same pole, so as to generate magnetic repulsion, so that the first magnetic levitation structure 51 and the second magnetic levitation structure 51 are opposite to each other.
  • the magnetic levitation structures 52 are not in direct contact with each other.
  • the casing 10 includes a side wall 11 , a casing cover 12 and a casing bottom surface 13 connected with the side wall 11 to form the receiving space 1 , and the second magnetic suspension structure 52 is fixedly arranged on the casing bottom surface. 13 ; the first magnetic suspension structure 51 is fixedly arranged on the bottom of the lens module 20 .
  • the shapes of the first magnetic levitation structure 51 and the second magnetic levitation structure 52 are not limited. Specifically, in one embodiment, the first magnetic levitation structure 51 is a hemispherical protrusion, and the second magnetic levitation structure 52 is a hemispherical protrusion.
  • the driving device 40 provides a driving force for the lens module 20 to drive the lens module 20 to rotate. Under the action of the above-mentioned driving force, the lens module 20 rotates around the magnetic levitation fulcrum structure 50 and reaches a designated position to reduce friction. resistance, to avoid wear and tear, and then achieve the purpose of optical image stabilization.
  • the optical device further includes a PCB board 60 , the housing 10 is provided with a through hole 18 penetrating the side wall 11 , one end of the PCB board 60 is connected to the camera 20 , and the other end of the PCB board 60 passes through the through hole 18 and extends to the housing 10 . outside.
  • the first magnetic suspension structure 51 and the second magnetic suspension structure 52 are permanent magnets.
  • the first magnetic suspension structure 51 is an electromagnetic structure
  • the second magnetic suspension structure 52 is a permanent magnet.
  • the first magnetic suspension structure 51 includes an iron core 511 and a coil 512, and the coil 512 is wound on the iron core 511. When the coil 512 is energized, the first magnetic suspension structure 51 and the second magnetic suspension structure are formed. 52 magnetically identical magnetic fields to generate magnetic repulsion.
  • the first magnetic suspension structure 51 is a permanent magnet
  • the second magnetic suspension structure 52 is an electromagnetic structure.
  • the second magnetic levitation structure 52 includes an iron core 521 and a coil 522.
  • the coil 522 is wound on the iron core 521.
  • the second magnetic levitation structure 52 is formed with the first magnetic levitation structure. 51 magnetically identical magnetic fields to generate magnetic repulsion.
  • the first magnetic suspension structure 51 and the second magnetic suspension structure 52 are both electromagnetic structures.
  • the first magnetic suspension structure 51 includes an iron core 511 and a coil 512, and the coil 512 is wound on the iron core 511.
  • the first magnetic suspension structure 51 and the second magnetic suspension structure are formed.
  • 52 magnetically the same magnetic field.
  • the second magnetic levitation structure 52 includes an iron core 521 and a coil 522.
  • the coil 522 is wound on the iron core 521.
  • the second magnetic levitation structure 52 is formed with the first magnetic levitation structure. 51 magnetically identical magnetic fields to generate magnetic repulsion.
  • the optical device provided by the present invention uses the magnetic levitation pivot structure to replace the traditional hemispherical structure, so as to reduce frictional resistance, avoid wear and tear, and thus achieve the purpose of optical anti-shake.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Adjustment Of Camera Lenses (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)

Abstract

本实用新型提供一种光学装置，包括具有收容空间的壳体和收容于所述收容空间的镜头模组、弹簧装置以及驱动装置；所述弹簧装置分别与所述镜头模组和所述壳体连接；所述光学装置还包括设于所述镜头模组与所述壳体之间的磁悬浮支点结构，所述磁悬浮支点结构包括第一磁悬浮结构和与其对应设置的第二磁悬浮结构，所述第一磁悬浮结构固定设置于所述镜头模组上，所述第二磁悬浮结构固定设置于所述壳体上，所述第一磁悬浮结构与所述第二磁悬浮结构同极相对设置，以产生磁性斥力使所述第一磁悬浮结构与所述第二磁悬浮结构相互不直接接触。本实用新型提供的光学装置，达到减少摩擦阻力，避免产生磨损，进而达到光学防抖的目的。

Description

光学装置
【技术领域】
本实用新型涉及光学防抖技术领域，尤其涉及一种光学装置。
【背景技术】
现有光学装置的镜头模组一般通过半球形结构与固定壳体连接，半球形结构的一端为半球形凸起，另一端为对应设置的凹槽，当镜头模组转动时，半球形凸起和凹槽接触并产生摩擦，存在一定的摩擦阻力，长期的镜头模组转动工作会造成该半球形结构磨损，甚至损坏。
【实用新型内容】
本实用新型提供一种光学装置，通过使用磁悬浮支点结构取代传统的半球形结构，达到减少摩擦阻力，避免产生磨损，进而达到光学防抖的目的。
本实用新型提供的光学装置包括具有收容空间的壳体和收容于所述收容空间的镜头模组、弹簧装置以及驱动装置；所述弹簧装置分别与所述镜头模组和所述壳体连接，所述弹簧装置用于支撑所述镜头模组；所述镜头模组与所述壳体之间设置用于推动所述镜头模组转动的驱动装置；所述光学装置还包括设于所述镜头模组与所述壳体之间的磁悬浮支点结构，所述磁悬浮支点结构包括第一磁悬浮结构和与其对应设置的第二磁悬浮结构，所述第一磁悬浮结构固定设置于所述镜头模组上，所述第二磁悬浮结构固定设置于所述壳体上，所述第一磁悬浮结构与所述第二磁悬浮结构同极相对设置，以产生磁性斥力使所述第一磁悬浮结构与所述第二磁悬浮结构相互不直接接触。
优选地，所述第一磁悬浮结构和第二磁悬浮结构为永磁体。
优选地，所述第一磁悬浮结构为电磁结构，所述第二磁悬浮结构为永磁体。
优选地，所述第一磁悬浮结构为永磁体，所述第二磁悬浮结构为电磁结构。
优选地，所述第一磁悬浮结构和第二磁悬浮结构为电磁结构。
优选地，所述电磁结构包括铁芯和缠绕所述铁芯设置的线圈，所述线圈通电时与所述铁芯配合产生磁场。
优选地，所述壳体包括侧壁和与所述侧壁连接构成所述收容空间的壳体盖板和壳体底面，所述第二磁悬浮结构固定设置于所述壳体底面。
优选地，所述第一磁悬浮结构和所述第二磁悬浮结构之间具有由于磁性斥力产生的空隙。
优选地，所述第一磁悬浮结构为呈半球形状的凸起，所述第二磁悬浮结构为呈半球形状的凹槽。
与现有技术相比，本实用新型提供的光学装置，通过使用磁悬浮支点结构取代传统的半球形结构，达到减少摩擦阻力，避免产生磨损，进而达到光学防抖的目的。
【附图说明】
为了更清楚地说明本实用新型实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1为本实用新型一实施例提供的光学装置的结构示意图；
图2为图1中的光学装置的壳体分离的结构示意图；
图3为本实用新型实施例一提供的图1中沿A-A的光学装置的剖面示意图；
图4为图2中的部位B的放大示意图；
图5为本实用新型实施例二提供的图1中沿A-A的光学装置的剖面示意图；
图6为本实用新型实施例三提供的图1中沿A-A的光学装置的剖面示意图；
图7为本实用新型实施例四提供的图1中沿A-A的光学装置的剖面示意图。
【具体实施方式】 
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本实用新型保护的范围。
请一并参阅图1、图2、图3和图4，本实用新型提供一种光学装置100，所述光学装置100包括具有收容空间1的壳体10和收容于所述收容空间1的镜头模组20、弹簧装置30以及驱动装置40；所述弹簧装置30分别与所述镜头模组20和所述壳体10连接，所述弹簧装置30用于支撑所述镜头模组20；所述镜头模组20与所述壳体10之间设置用于推动所述镜头模组20转动的驱动装置40；所述光学装置100还包括设于所述镜头模组20与所述壳体10之间的磁悬浮支点结构50，所述磁悬浮支点结构50包括第一磁悬浮结构51和与其对应设置的第二磁悬浮结构52，所述第一磁悬浮结构51固定于所述镜头模组20上，所述第二磁悬浮结构52固定于所述壳体10上，所述第一磁悬浮结构51与所述第二磁悬浮结构52同极相对设置，以产生磁性斥力使所述第一磁悬浮结构51与所述第二磁悬浮结构52相互不直接接触。具体地，所述第一磁悬浮结构51与所述第二磁悬浮结构52之间具有由于磁性斥力产生的空隙512。所述壳体10包括侧壁11和与所述侧壁11连接构成所述收容空间1的壳体盖板12和壳体底面13，所述第二磁悬浮结构52固定设置于所述壳体底面13上；所述第一磁悬浮结构51固定设置于所述镜头模组20的底部。所述第一磁悬浮结构51和第二磁悬浮结构52的形状不作限制，具体在一实施例中，所述第一磁悬浮结构51为呈半球形状的凸起，所述第二磁悬浮结构52为呈半球形状的凹槽。由于所述第一磁悬浮结构51和第二磁悬浮结构52上下正对设置，并且所述镜头模组受壳体和弹簧装置的固定，第一磁悬浮结构51和第二磁悬浮结构52为磁性同极相对，受磁性斥力影响而保持相对位置，同时，由于磁性斥力的存在，第一磁悬浮结构51和第二磁悬浮结构52不会直接接触，而保持一定的空隙512。同时，所述驱动装置40提供镜头模组20驱动力，驱动所述镜头模组20转动，在上述驱动力的作用下，镜头模组20围绕磁悬浮支点结构50转动，到达指定位置，达到减少摩擦阻力，避免产生磨损，进而达到光学防抖的目的。
所述光学装置还包括PCB板60，壳体10上设有贯穿侧壁11的穿孔18，PCB板60的一端与摄像头20连接，PCB板60的另一端穿过穿孔18后延伸至壳体10外。
再次参阅图3所示，本实用新型提供的实施例一中，所述第一磁悬浮结构51和第二磁悬浮结构52为永磁体。
请参阅图5，本实用新型提供的实施例二中，所述第一磁悬浮结构51为电磁结构，所述第二磁悬浮结构52为永磁体。所述第一磁悬浮结构51包括铁芯511和线圈512，所述线圏512缠绕在所述铁芯511上，当线圈512通电时，所述第一磁悬浮结构51产生与所述第二磁悬浮结构52磁性相同的磁场，以产生磁性相斥力。
请参阅图6，本实用新型提供的实施例三中，所述第一磁悬浮结构51为永磁体，所述第二磁悬浮结构52为电磁结构。所述第二磁悬浮结构52包括铁芯521和线圈522，所述线圏522缠绕在所述铁芯521上，当线圈522通电时，所述第二磁悬浮结构52产生与所述第一磁悬浮结构51磁性相同的磁场，以产生磁性相斥力。
请参阅图7，本实用新型提供的实施例四中，所述第一磁悬浮结构51和所述第二磁悬浮结构52均为电磁结构。所述第一磁悬浮结构51包括铁芯511和线圈512，所述线圏512缠绕在所述铁芯511上，当线圈512通电时，所述第一磁悬浮结构51产生与所述第二磁悬浮结构52磁性相同的磁场。所述第二磁悬浮结构52包括铁芯521和线圈522，所述线圏522缠绕在所述铁芯521上，当线圈522通电时，所述第二磁悬浮结构52产生与所述第一磁悬浮结构51磁性相同的磁场，以产生磁性相斥力。
与现有技术相比，本实用新型提供的光学装置，通过使用磁悬浮支点结构取代传统的半球形结构，达到减少摩擦阻力，避免产生磨损，进而达到光学防抖的目的。
以上所述的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。

Claims (9)

  1. 一种光学装置，其特征在于，所述光学装置包括具有收容空间的壳体和收容于所述收容空间的镜头模组、弹簧装置以及驱动装置；所述弹簧装置分别与所述镜头模组和所述壳体连接，所述弹簧装置用于支撑所述镜头模组；所述镜头模组与所述壳体之间设置用于推动所述镜头模组转动的驱动装置；所述光学装置还包括设于所述镜头模组与所述壳体之间的磁悬浮支点结构，所述磁悬浮支点结构包括第一磁悬浮结构和与其对应设置的第二磁悬浮结构，所述第一磁悬浮结构固定设置于所述镜头模组上，所述第二磁悬浮结构固定设置于所述壳体上，所述第一磁悬浮结构与所述第二磁悬浮结构同极相对设置，以产生磁性斥力使所述第一磁悬浮结构与所述第二磁悬浮结构相互不直接接触。
  2. 根据权利要求1所述的光学装置，其特征在于，所述第一磁悬浮结构和第二磁悬浮结构为永磁体。
  3. 根据权利要求1所述的光学装置，其特征在于，所述第一磁悬浮结构为电磁结构，所述第二磁悬浮结构为永磁体。
  4. 根据权利要求1所述的光学装置，其特征在于，所述第一磁悬浮结构为永磁体，所述第二磁悬浮结构为电磁结构。
  5. 根据权利要求1所述的光学装置，其特征在于，所述第一磁悬浮结构和第二磁悬浮结构为电磁结构。
  6. 根据权利要求3-5任一项所述的光学装置，其特征在于，所述电磁结构包括铁芯和缠绕所述铁芯设置的线圈，所述线圈通电时与所述铁芯配合产生磁场。
  7. 根据权利要求1所述的光学装置，其特征在于，所述壳体包括侧壁和与所述侧壁连接构成所述收容空间的壳体盖板和壳体底面，所述第二磁悬浮结构固定设置于所述壳体底面。
  8. 根据权利要求1所述的光学装置，其特征在于，所述第一磁悬浮结构和所述第二磁悬浮结构之间具有由于磁性斥力产生的空隙。
  9. 根据权利要求1所述的光学装置，其特征在于，所述第一磁悬浮结构为呈半球形状的凸起，所述第二磁悬浮结构为呈半球形状的凹槽。
PCT/CN2020/101473 2020-06-30 2020-07-10 光学装置 WO2022000539A1 (zh)

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