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WO2020103438A1 - 驱动机构、摄像头模组及电子设备 - Google Patents

驱动机构、摄像头模组及电子设备

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Publication number
WO2020103438A1
WO2020103438A1 PCT/CN2019/091170 CN2019091170W WO2020103438A1 WO 2020103438 A1 WO2020103438 A1 WO 2020103438A1 CN 2019091170 W CN2019091170 W CN 2019091170W WO 2020103438 A1 WO2020103438 A1 WO 2020103438A1
Authority
WO
WIPO (PCT)
Prior art keywords
assembly
camera module
driving mechanism
assembled
fixed
Prior art date
Application number
PCT/CN2019/091170
Other languages
English (en)
French (fr)
Inventor
王辉
尹志东
郑严
杨宗保
Original Assignee
北京小米移动软件有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to JP2019552984A priority Critical patent/JP2021509967A/ja
Priority to RU2019130128A priority patent/RU2732363C1/ru
Priority to KR1020197029180A priority patent/KR102337594B1/ko
Publication of WO2020103438A1 publication Critical patent/WO2020103438A1/zh

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32—Means for focusing
    • G03B13/34—Power focusing
    • G03B13/36—Autofocus systems
    • 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
    • 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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/02—Focusing arrangements of general interest for cameras, projectors or printers moving lens along baseboard
    • 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
    • H04N23/51—Housings
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/58—Means for changing the camera field of view without moving the camera body, e.g. nutating or panning of optics or image sensors
    • 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
    • H04N23/67—Focus control based on electronic image sensor signals

Definitions

  • Embodiments of the present disclosure relate to the field of electronic technology, and in particular, to a driving mechanism, a camera module, and electronic equipment.
  • cameras of electronic devices are generally classified into fixed-focus cameras and auto-focus cameras.
  • the distance between the lens of the fixed-focus camera and the photosensitive chip is fixed, and only fixed-focus shooting can be achieved, and the shooting effect is difficult to meet user needs;
  • the auto-focus camera is generally achieved by driving the motor to move the relatively fixed photosensitive chip with the lens.
  • Embodiments of the present disclosure provide a driving mechanism, a camera module, and an electronic device to improve the lightness and thinness of the driving mechanism, the camera module, and the electronic device, while improving the shooting effect of the camera module and the electronic device.
  • a driving mechanism includes: a driving assembly, a fixed assembly, and a movable assembly; the driving assembly includes an elastic conductor member, a closed circuit, and a magnetic member;
  • the closed line is located in the magnetic field generated by the magnetic member, and the closed line communicates with the elastic conductor member to generate an electromagnetic force that overcomes the elastic force of the elastic conductor member;
  • the elastic conductor piece is fixedly connected to the fixed assembly piece, and abuts against the movable assembly piece; the electromagnetic force overcomes the elastic force, so that the elastic conductor piece drives the activity in the focusing function
  • the assembly moves relative to the fixed assembly.
  • the two magnetic members are assembled at opposite ends of the fixed assembly.
  • the fixed assembly includes a housing and a cover; the housing and the cover are hermetically sealed to form an assembly space, and the drive assembly and movable assembly are disposed in the assembly space.
  • the movable assembly cooperates with at least a part of the housing to enclose a receiving portion, and the driving assembly is assembled in the receiving portion.
  • a camera module includes:
  • Photosensitive chip assembled on the movable assembly
  • the lens assembly is assembled on the fixed assembly.
  • the photosensitive chip includes a photosensitive body and a circuit board connected to the photosensitive body; the photosensitive body corresponds to a position of the lens assembly, and the closed circuit is electrically connected to the circuit board.
  • the material of the circuit board is a flexible material.
  • the fixed assembly includes a housing and a cover body, and the cover body includes a main body portion matched with the housing and a hollow portion corresponding to the photosensitive body of the photosensitive chip;
  • the lens assembly is assembled outside the cover body, and is tightly fitted with the hollow part.
  • an electronic device includes:
  • the drive mechanism is assembled to the device body
  • the camera module is assembled to the device body.
  • the technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:
  • the electromagnetic force generated by the magnetic field cut by the closed circuit overcomes the elastic force of the elastic conductor member to drive the movable assembly connected to the elastic conductor member .
  • the configuration of the above electromagnetic drive is easy to realize and improves the overall lightness and thinness of the drive mechanism.
  • the photosensitive chip of the camera module is assembled on the movable assembly, and the lens assembly is assembled on the fixed assembly, so that the camera module can realize autofocus through the movement of the photosensitive chip with smaller volume and mass, while the larger volume and mass
  • the lens assembly is fixed, which reduces the power and volume of the driving mechanism, and improves the shooting effect and overall thinness of the camera module and electronic equipment.
  • FIG. 1 is a schematic perspective view of a camera module in an exemplary embodiment of the present disclosure
  • FIG. 2 is a schematic cross-sectional structural diagram of a camera module in an exemplary embodiment of the present disclosure
  • FIG. 3 is a schematic cross-sectional structure diagram of a driving mechanism according to an exemplary embodiment of the present disclosure
  • FIG. 4 is a schematic perspective view of a driving mechanism of an exemplary embodiment of the present disclosure.
  • FIG. 5 is a schematic cross-sectional structure diagram of a camera module according to another exemplary embodiment of the present disclosure.
  • FIG. 6 is an exploded schematic view of a driving mechanism of an exemplary embodiment of the present disclosure.
  • FIG. 7 is a schematic exploded view of a camera module according to an exemplary embodiment of the present disclosure.
  • cameras of electronic devices are generally classified into fixed-focus cameras and auto-focus cameras.
  • the autofocus camera is generally realized by driving the motor to move the lens relative to the fixed photosensitive chip.
  • the thickness, volume and mass of the lens are also increased.
  • the corresponding driving motor is also getting larger and larger.
  • FIG. 1 is a schematic perspective view of a camera module in an exemplary embodiment of the present disclosure
  • FIG. 2 is a schematic cross-sectional view of a camera module in an exemplary embodiment of the present disclosure.
  • the camera module 1 includes a driving mechanism 13, a photosensitive chip 12 and a lens assembly 11.
  • the driving mechanism 13 includes a driving assembly 131, a fixed assembly 133 and a movable assembly 132, the photosensitive chip 12 is assembled on the movable assembly 132, and the lens assembly 11 is assembled on the fixed assembly 133.
  • the driving assembly 131 cooperates with the movable assembly 132 to drive the movable assembly 132 to move relative to the fixed assembly 133 in the focusing function.
  • the driving assembly 131 includes an elastic conductive member 1311, a closed line 1312 and a magnetic member 1313.
  • the elastic conductor 1311 is fixedly connected to the fixed assembly 133 and abuts against the movable assembly 132.
  • the magnetic member 1313 can generate a magnetic field perpendicular to the optical axis of the lens assembly 11.
  • the closed circuit 1312 is located in the magnetic field generated by the magnetic member 1313 and communicates with the elastic conductor member 1311. When the closed circuit 1312 is energized, the magnetic field is cut to generate Electromagnetic force.
  • the electromagnetic force can overcome the elastic force of the elastic conductor 1311 and move the movable assembly 132 that abuts against the elastic conductor 1311 in the optical axis direction.
  • the photosensitive chip 12 assembled on the movable assembly 132 can move up and down along the optical axis of the lens assembly 11 with the movable assembly 132, and cooperate with the fixed lens assembly 11 to realize the autofocus function.
  • the electromagnetic force generated by the cutting magnetic field of the closed line 1312 can overcome the elastic force of the elastic conductor 1311 and drive the movable assembly 132 connected to the elastic conductor 1311.
  • the configuration of the electromagnetic drive is easy to control, and the displacement accuracy of the photosensitive chip 12 assembled in the movable assembly 132 is improved, thereby improving the focusing accuracy and shooting effect, and the overall lightness and thinness of the driving mechanism 13.
  • the photosensitive chip 12 of the camera module 1 is assembled on the movable assembly 132, and the lens assembly 11 is assembled on the fixed assembly 133, so that the camera module 1 can realize autofocus by moving the photosensitive chip 12 with smaller volume and mass, while the volume
  • the larger-quality lens assembly 11 is fixed, which reduces the power and volume of the driving mechanism 13 and improves the shooting effect and overall thinness of the camera module 1 and electronic equipment.
  • the direction of the electromagnetic force can be changed by controlling the direction of the current in the closed line 1312 to obtain electromagnetic forces in different directions.
  • the direction of the electromagnetic force changes, it can overcome the elastic force in the up and down directions, so as to realize the up and down movement of the movable assembly 132.
  • Two magnetic members 1313 are assembled at opposite ends of the fixed assembly 133 to generate a magnetic field perpendicular to the optical axis of the lens assembly 11, and both closed lines 1312 are disposed in the magnetic field.
  • the magnetic members 1313 provided at both ends of the fixed assembly 133 avoid occupying the installation space in the central area of the fixed assembly 133, and improve the space utilization rate.
  • the embodiments of the present disclosure do not limit the number and position of the magnetic members 1313 and the closed circuit 1312.
  • the magnetic member 1313 may be a magnet or other objects that can generate a magnetic field, which is not limited in the embodiments of the present disclosure.
  • the closed line 1312 may be a coil electrically connected to the photosensitive chip 12 to obtain current.
  • the closed circuit 1312 may also be provided with a separate power source, which is not limited in the embodiments of the present disclosure.
  • the photosensitive chip 12 includes a photosensitive body 121 and a circuit board 122 connected to the photosensitive body 121, the coil is electrically connected to the circuit board 122 to obtain current, and the photosensitive body 121 and the lens assembly 11 The position corresponds to facilitate the sensing of incident light.
  • the material of the circuit board 122 is a flexible material, and the stress of the circuit board 122 can be eliminated by selecting materials and bending processes, so as to prevent the movement of the photosensitive chip 12 from affecting the function of the flexible board.
  • the two elastic conductors 1311 are fitted at opposite ends of the movable assembly 132 to improve the stability of the elastic conductor 1311 and the movable assembly 132 during the top-fitting process In order to prevent the movable assembly 132 from shaking and being damaged when the electromagnetic force overcomes the elastic movement.
  • a plurality of elastic conductors 1311 may be provided for the driving assembly 131 to further improve the stability of the movable assembly 132 during the movement, which is not limited in the embodiments of the present disclosure.
  • the elastic conductor 1311 may be a metal spring, which has a simple structure and good structural strength.
  • the elastic conductive member 1311 may also use other conductive material with elasticity, which is not limited in the embodiments of the present disclosure.
  • the camera module 1 applied to electronic equipment usually contains precision devices, dust or debris will have a great influence on the functions of the camera module 1 and electronic equipment. Therefore, the tightness of the camera module 1 is very important for itself and the electronic equipment.
  • the fixed assembly 133 includes a housing and a cover 1333, the housing and the cover 1333 are sealed and fitted to form an assembly space, and the driving assembly 131 and the movable assembly 132 are disposed in the assembly space.
  • the movable assembly 132 is disposed in the housing, and cooperates with the housing to enclose an accommodating portion 134, and the driving assembly 131 is assembled in the accommodating portion 134.
  • the housing is directly used as the fixed part of the driving mechanism 13, and the movable assembly 132 is arranged in the housing, on the one hand, the aesthetics of the driving mechanism 13 is improved, and the overall thickness of the driving mechanism 13 is also reduced.
  • the assembly of the drive assembly 131 in the housing 134 surrounded by the housing and the movable assembly 132 realizes the encapsulation of the drive assembly 131 and avoids the interference of dust and other debris on the operation of the drive assembly 131.
  • the magnetic drive when used, it can avoid the interference of dust and other debris on the magnetic field and electromagnetic induction effect, and improve the control accuracy and focusing accuracy of the electromagnetic force.
  • the case includes an upper case 1331 and a base 1332 to facilitate the assembly of the driving mechanism 13 itself and the cooperation of the driving mechanism 13 and the photosensitive chip 12.
  • the magnetic member 1313 can be assembled at the corresponding position in the upper case 1331, and the closed circuit 1312 can be assembled on the movable assembly 132; then, the elastic conductor member 1311 and the metal member on the base 1332 can be fixed by welding or other methods Connect and make the elastic conductor 1311 and the movable assembly 132 abut against each other; finally assemble the upper shell 1331 and the base 1332 to realize the overall installation of the driving mechanism 13.
  • the cover 1333 includes a body portion 1333a and a hollowed portion 1333b; the body portion 1333a is hermetically fitted with the housing, the hollowed portion 1333b is hermetically fitted with the photosensitive body 121 of the photosensitive chip 12, and the cover 1333
  • the arrangement increases the overall packaging effect of the drive mechanism 13.
  • the movable assembly 132 may also be provided with a recessed recess 1321, and the recess 1321 is used to carry the photosensitive body 121.
  • the thickness of the driving mechanism 13 matches the thickness of the photosensitive chip 12, reducing the overall thickness of the driving mechanism 13.
  • the lens assembly 11 can be assembled outside the cover 1333 and tightly fitted with the cover 1333.
  • the lens assembly 11 can be assembled outside the cover 1333 by an adhesive such as glue to improve the sealing effect of the driving mechanism 13.
  • an adhesive such as glue to improve the sealing effect of the driving mechanism 13.
  • An embodiment of the present disclosure further proposes an electronic device.
  • the electronic device includes a device body and the camera module 1, and the camera module 1 is assembled to the device body.
  • the photosensitive chip 12 of the camera module 1 is assembled on the movable assembly 132, and the lens assembly 11 is assembled on the fixed assembly 133.
  • the driving assembly 131 of the driving mechanism 13 cooperates with the movable assembly 132 so that the movable assembly 132 can move relative to the fixed assembly 133 under the driving of the driving mechanism 13.
  • the electronic device may be a mobile phone, a computer, etc., and the embodiments of the present disclosure do not limit this.
  • the electromagnetic force generated by the magnetic field cut by the closed circuit overcomes the elastic force of the elastic conductor member to drive the movable assembly connected to the elastic conductor member .
  • the configuration of the above electromagnetic drive is easy to realize and improves the overall lightness and thinness of the drive mechanism.
  • the photosensitive chip of the camera module is assembled on the movable assembly, and the lens assembly is assembled on the fixed assembly, so that the camera module can realize autofocus through the movement of the photosensitive chip with smaller volume and mass, while the larger volume and mass
  • the lens assembly is fixed, which reduces the power and volume of the driving mechanism, and improves the shooting effect and overall thinness of the camera module and electronic equipment.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lens Barrels (AREA)
  • Studio Devices (AREA)

Abstract

本公开实施例是关于一种驱动机构、摄像头模组和电子设备，所述驱动机构包括：驱动组件、活动组装件和固定组装件。其中，闭合线路切割磁场产生的电磁力克服弹性导体件的弹力，以驱动与弹性导体件相连的活动组装件。

Description

驱动机构、摄像头模组及电子设备
相关申请的交叉引用
本申请基于申请号为201811390590.8、申请日为2018年11月21日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本公开实施例涉及电子技术领域，尤其涉及驱动机构、摄像头模组及电子设备。
背景技术
在相关技术中，例如手机等电子设备的摄像头一般分为定焦摄像头和自动对焦摄像头。其中，定焦摄像头的镜头和感光芯片之间的距离固定，仅能实现定焦距拍摄，拍摄效果难以满足用户需求；自动对焦摄像头一般是通过驱动马达带着镜头相对固定的感光芯片运动实现的。
然而，随着摄像头性能的提升，镜头厚度、体积和质量也随之变大。为了满足驱动力要求，相应的驱动马达也越来越大，因而增加了摄像头及电子设备的整体厚度、体积和质量。
因此，如何在保证摄像头自动对焦功能和拍摄质量的前提下提升摄像头的轻薄性成为当前领域的热点研究问题。
发明内容
本公开实施例提供一种驱动机构、摄像头模组及电子设备，以提升驱动机构、摄像头模组及电子设备的轻薄性，同时提升摄像头模组和电子设 备的拍摄效果。
根据本公开实施例的第一方面提出一种驱动机构，所述驱动机构包括：驱动组件、固定组装件和活动组装件；所述驱动组件包括弹性导体件、闭合线路和磁性件；
所述闭合线路位于所述磁性件产生的磁场中，所述闭合线路与所述弹性导体件连通以产生克服所述弹性导体件的弹力的电磁力；
所述弹性导体件固定连接在所述固定组装件上，且与所述活动组装件顶抵配合；所述电磁力克服所述弹力，以使所述弹性导体件在对焦功能中驱动所述活动组装件相对所述固定组装件运动。
可选的，所述磁性件有两个，两个所述磁性件组装于所述固定组装件相对的两端。
可选的，所述弹性导体件有两个，且配合于所述活动组装件相对的两端。
可选的，所述固定组装件包括壳体和盖体；所述壳体与盖体密封配合围成组装空间，所述驱动组件和活动组装件设置在所述组装空间内。
可选的，所述活动组装件与所述壳体的至少一部分配合围成容纳部，所述驱动组件组装在所述容纳部内。
根据本公开实施例的第二方面提出一种摄像头模组，所述摄像头模组包括：
上述驱动机构；
感光芯片，组装于所述活动组装件；
镜头组件，组装于所述固定组装件。
可选的，所述感光芯片包括感光主体和与所述感光主体相连的线路板；所述感光主体与所述镜头组件位置对应，所述闭合线路与所述线路板电连接。
可选的，所述线路板的材质为柔性材质。
可选的，所述固定组装件包括壳体和盖体，所述盖体包括配合于所述壳体的主体部和对应于所述感光芯片的感光主体的镂空部；所述摄像头模组的镜头组件组装在所述盖体外部，且与所述镂空部密封配合。
根据本公开实施例的第三方面提出一种电子设备，所述电子设备包括：
设备主体；
上述驱动机构，所述驱动机构组装于所述设备主体；
或，上述摄像头模组，所述摄像头模组组装于所述设备主体。本公开的实施例提供的技术方案可以包括以下有益效果：
本公开实施例通过为驱动机构的驱动组件设置弹性导体件、闭合线路和磁性件，以使闭合线路切割磁场产生的电磁力克服弹性导体件的弹力，以驱动与弹性导体件相连的活动组装件。上述电磁驱动的结构设置便于实现且提升了驱动机构的整体轻薄性。此外，摄像头模组的感光芯片组装在活动组装件上，镜头组件组装在固定组装件上，使得摄像头模组能够通过体积和质量较小的感光芯片移动实现自动对焦，而体积和质量较大的镜头组件则固定不动，减小了驱动机构的功率和体积，提升了摄像头模组和电子设备的拍摄效果和整体轻薄性。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开实施例。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开实施例的原理。
图1是本公开一示例性实施例中一种摄像头模组的立体结构示意图；
图2是本公开一示例性实施例中一种摄像头模组的剖面结构示意图；
图3是本公开一示例性实施例一种驱动机构的剖面结构示意图；
图4是本公开一示例性实施例一种驱动机构的立体结构示意图；
图5是本公开另一示例性实施例一种摄像头模组的剖面结构示意图；
图6是本公开一示例性实施例一种驱动机构的分解结构示意图；
图7是本公开一示例性实施例一种摄像头模组的分解结构示意图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开实施例相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开实施例的一些方面相一致的装置和方法的例子。
在相关技术中，例如手机等电子设备的摄像头一般分为定焦摄像头和自动对焦摄像头。其中，定焦摄像头的镜头和感光芯片之间的距离固定，仅能实现定焦距拍摄，拍摄效果难以满足用户需求。而自动对焦摄像头一般通过驱动马达带着镜头相对固定的感光芯片运动实现的。随着摄像头性能的提升，镜头厚度、体积和质量也随之变大，为了满足驱动力要求，相应的驱动马达也越来越大。
由此可以得出，上述定焦摄像头难以满足用户的拍摄需求，而自动对焦摄像头的镜头、马达的体积和质量增加导致了摄像头及电子设备的整体厚度、体积和质量。
图1是本公开一示例性实施例中一种摄像头模组的立体结构示意图，图2是本公开一示例性实施例中一种摄像头模组的剖面结构示意图。如图1、图2所示，所述摄像头模组1包括：驱动机构13、感光芯片12和镜头组件11。其中，驱动机构13包括驱动组件131、固定组装件133和活动组装件132，感光芯片12组装在活动组装件132上，镜头组件11组装在固定组装件133上。所述驱动组件131配合于活动组装件132，以在对焦功能中驱动 活动组装件132相对固定组装件133运动。
其中，如图3、图4所示，所述驱动组件131包括弹性导体件1311、闭合线路1312和磁性件1313。其中，所述弹性导体件1311固定连接在固定组装件133上，且与所述活动组装件132顶抵配合。所述磁性件1313能够产生垂直于镜头组件11光轴方向的磁场，闭合线路1312位于磁性件1313产生的磁场中，并与所述弹性导体件1311连通，当闭合线路1312通电后切割磁场以产生电磁力。所述电磁力能够克服弹性导体件1311的弹力，使与弹性导体件1311顶抵配合的活动组装件132沿光轴方向上下移动。此时，组装在活动组装件132上的感光芯片12能够随着活动组装件132沿镜头组件11的光轴方向上下移动，并与固定不动的镜头组件11配合实现自动对焦功能。
闭合线路1312切割磁场产生的电磁力能够克服弹性导体件1311的弹力，进而驱动与弹性导体件1311相连的活动组装件132。上述电磁驱动的结构设置便于控制，且提升了组装于活动组装件132的感光芯片12的位移精度，进而提升了对焦精度和拍摄效果及驱动机构13的整体轻薄性。
摄像头模组1的感光芯片12组装在活动组装件132上，镜头组件11组装在固定组装件133上，使得摄像头模组1能够通过体积和质量较小的感光芯片12移动实现自动对焦，而体积和质量较大的镜头组件11则固定不动，减小了驱动机构13的功率和体积，提升了摄像头模组1和电子设备的拍摄效果和整体轻薄性。
需要说明的是，可以通过控制闭合线路1312中的电流方向来改变电磁力的方向，以获得方向不同的电磁力。当电磁力的方向改变时能够克服上下两个方向上的弹力，从而实现活动组装件132的上下移动。
在上述实施例中，所述磁性件1313和闭合线路1312可以分别有两个。两个磁性件1313组装于固定组装件133相对的两端，以产生垂直于镜头组 件11光轴方向的磁场，两个闭合线路1312均设置在上述磁场中。设置在固定组装件133两端的磁性件1313避免了对固定组装件133中心区域安装空间的占用，提升了空间利用率。或者，所述磁性件1313和闭合线路1312也可以有多组。多组磁性件1313设置在固定组装件133上的任意位置，以能够与闭合线路1312配合实现磁场切割为准，本公开实施例并不对磁性件1313及闭合线路1312的数量和位置进行限制。
需要说明的是，所述磁性件1313可以是磁石，也可以是其他能够产生磁场的物体，本公开实施例并不对此进行限制。所述闭合线路1312可以是和感光芯片12电连接以获取电流的线圈。或者，也可以为闭合线路1312单独设置电源，本公开实施例也不对此进行限制。例如，如图5所示，所述感光芯片12包括感光主体121和与感光主体121相连的线路板122，所述线圈与线路板122电连接以获取电流，所述感光主体121与镜头组件11位置对应以便于感应入射光线。其中，所述线路板122的材质为柔性材质，可以通过选择材料和弯折工艺来消除线路板122的应力，避免感光芯片12的运动影响软板的功能。
此外，所述弹性导体件1311可以有两个，两个弹性导体件1311配合于活动组装件132相对的两端，以提升弹性导体件1311与活动组装件132在顶抵配合过程中的稳定性，避免活动组装件132因电磁力克服弹力运动时出现晃动和损坏。或者，也可以为驱动组件131设置多个弹性导体件1311以进一步提升活动组装件132在运动过程中的稳定性，本公开实施例并不对此进行限制。
需要说明的是，所述弹性导体件1311可以是金属材质的弹簧，结构简单且结构强度较好。或者，所述弹性导体件1311也可以采用其他具备弹性的导体材质，本公开实施例并不对此进行限制。
由于应用于电子设备的摄像头模组1通常包含精密器件，灰尘或杂物 等都会对摄像头模组1及电子设备的功能造成极大影响。因此，摄像头模组1的密封性对于其本身及电子设备是及其重要的，下面通过实施例对摄像头模组1的整体结构设置进行示例性说明：
所述固定组装件133包括壳体和盖体1333，所述壳体与盖体1333密封配合围成组装空间，所述驱动组件131和活动组装件132设置在所述组装空间内。具体的，活动组装件132设置在壳体内，并与壳体配合围成容纳部134，所述驱动组件131组装在所述容纳部134内。直接将壳体作为驱动机构13固定不动的部分，并通过将活动组装件132设置在壳体内，一方面提升了驱动机构13的美观性，也减小了驱动机构13的整体厚度。而将驱动组件131组装在壳体和活动组装件132围成的容纳部134实现了对驱动组件131的封装，避免了灰尘等杂物对驱动组件131工作的干扰。特别是，当采用磁力驱动的情况下，能够避免灰尘等杂物对磁场及电磁感应效果的干扰，提升对电磁力的控制精度及对焦精度。
在上述实施例中，如图6所示，所述壳体包括上壳1331和底座1332，以便于驱动机构13自身的组装以及驱动机构13与感光芯片12的配合。具体的，可以先将磁性件1313组装在上壳1331内的相应位置，闭合线路1312组装在活动组装件132上；再采用焊接等方式固定连接使弹性导体件1311与底座1332上的金属件固定连接，并使弹性导体件1311与活动组装件132顶抵配合；最后将上壳1331与底座1332组装以实现驱动机构13的整体安装。
进一步的，如图7所示，所述盖体1333包括主体部1333a和镂空部1333b；主体部1333a与壳体密封配合，镂空部1333b与感光芯片12的感光主体121密封配合，盖体1333的设置增加了驱动机构13的整体封装效果。所述活动组装件132上还可以设有下沉的凹部1321，所述凹部1321用于承载感光主体121。当感光主体121组装在凹部1321内时，驱动机构13 的厚度匹配于感光芯片12的厚度，减小了驱动机构13的整体厚度。
在上述实施例中，所述镜头组件11可以组装在盖体1333外部，且与盖体1333密封配合。其中，镜头组件11可以通过胶水等粘结剂组装在盖体1333外部，提升驱动机构13的密封效果。当镜头组件11组装在盖体1333外部后，仅有镜头组件11突出于驱动机构13的壳体，一方面提升了摄像头模组1的整体美观性，也降低了摄像头模组1的整体厚度。
本公开实施例进一步提出一种电子设备，所述电子设备包括设备主体和所述摄像头模组1，所述摄像头模组1组装于所述设备主体。
通过为电子设备的摄像头模组1设置驱动机构13，并使摄像头模组1的感光芯片12组装在活动组装件132上，镜头组件11组装在固定组装件133上。其中，驱动机构13的驱动组件131配合于活动组装件132，使得活动组装件132能够在驱动机构13的驱动下相对固定组装件133运动。上述结构设置使得摄像头模组1能够通过体积和质量较小的感光芯片12移动实现自动对焦，而体积和质量较大的镜头组件11则固定不动，减小了驱动机构13的功率和体积，提升了摄像头模组1和电子设备的拍摄效果和整体轻薄性。
需要说明的是，所述电子设备可以是手机、电脑等，本公开实施例并不对此进行限制。
本领域技术人员在考虑说明书及实践这里公开的技术方案后，将容易想到本公开实施例的其它实施方案。本申请旨在涵盖本公开实施例的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开实施例的一般性原理并包括本公开实施例未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开实施例的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开实施例并不局限于上面已经描述并在附图中示 出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开实施例的范围仅由所附的权利要求来限制。
工业实用性
本公开实施例通过为驱动机构的驱动组件设置弹性导体件、闭合线路和磁性件，以使闭合线路切割磁场产生的电磁力克服弹性导体件的弹力，以驱动与弹性导体件相连的活动组装件。上述电磁驱动的结构设置便于实现且提升了驱动机构的整体轻薄性。此外，摄像头模组的感光芯片组装在活动组装件上，镜头组件组装在固定组装件上，使得摄像头模组能够通过体积和质量较小的感光芯片移动实现自动对焦，而体积和质量较大的镜头组件则固定不动，减小了驱动机构的功率和体积，提升了摄像头模组和电子设备的拍摄效果和整体轻薄性。

Claims (10)

  1. 一种驱动机构，应用于摄像头模组，所述驱动机构包括：驱动组件、固定组装件和活动组装件；所述驱动组件包括弹性导体件、闭合线路和磁性件；
    所述闭合线路位于所述磁性件产生的磁场中，所述闭合线路与所述弹性导体件连通以产生克服所述弹性导体件的弹力的电磁力；
    所述弹性导体件固定连接在所述固定组装件上，且与所述活动组装件顶抵配合；所述电磁力克服所述弹力，以使所述弹性导体件在对焦功能中驱动所述活动组装件相对所述固定组装件运动。
  2. 根据权利要求1所述的驱动机构，其中，所述磁性件有两个，两个所述磁性件组装于所述固定组装件相对的两端。
  3. 根据权利要求1所述的驱动机构，其中，所述弹性导体件有两个，且配合于所述活动组装件相对的两端。
  4. 根据权利要求1所述的驱动机构，其中，所述固定组装件包括壳体和盖体；所述壳体与盖体密封配合围成组装空间，所述驱动组件和活动组装件设置在所述组装空间内。
  5. 根据权利要求4所述的驱动机构，其中，所述活动组装件与所述壳体的至少一部分配合围成容纳部，所述驱动组件组装在所述容纳部内。
  6. 一种摄像头模组，包括：
    如权利要求1-5任一项所述的驱动机构；
    感光芯片，组装于所述活动组装件；
    镜头组件，组装于所述固定组装件。
  7. 根据权利要求6所述的摄像头模组，其中，所述感光芯片包括感光主体和与所述感光主体相连的线路板；所述感光主体与所述镜头组件位置对应，所述闭合线路与所述线路板电连接。
  8. 根据权利要求7所述的摄像头模组，其中，所述线路板的材质为柔性材质。
  9. 根据权利要求6所述的摄像头模组，其中，所述固定组装件包括壳体和盖体，所述盖体包括配合于所述壳体的主体部和对应于所述感光芯片的感光主体的镂空部；所述摄像头模组的镜头组件组装在所述盖体外部，且与所述镂空部密封配合。
  10. 一种电子设备，包括：
    设备主体；
    如权利要求1-5任一项所述的驱动机构，所述驱动机构组装于所述设备主体；
    或，如权利要求6-9任一项所述的摄像头模组，所述摄像头模组组装于所述设备主体。
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