WO2021258571A1 - 镜头模组 - Google Patents

镜头模组 Download PDF

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Publication number
WO2021258571A1
WO2021258571A1 PCT/CN2020/118355 CN2020118355W WO2021258571A1 WO 2021258571 A1 WO2021258571 A1 WO 2021258571A1 CN 2020118355 W CN2020118355 W CN 2020118355W WO 2021258571 A1 WO2021258571 A1 WO 2021258571A1
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WO
WIPO (PCT)
Prior art keywords
base
lens
magnetic
lens bracket
bracket
Prior art date
Application number
PCT/CN2020/118355
Other languages
English (en)
French (fr)
Inventor
马蒂凯南贾尔诺
林图洛蒂托米
Original Assignee
诚瑞光学(深圳)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
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Application filed by 诚瑞光学(深圳)有限公司 filed Critical 诚瑞光学(深圳)有限公司
Publication of WO2021258571A1 publication Critical patent/WO2021258571A1/zh

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Classifications

    • 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
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • 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
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism
    • 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
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0053—Driving means for the movement of one or more optical element
    • G03B2205/0076—Driving means for the movement of one or more optical element using shape memory alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0231—Magnetic circuits with PM for power or force generation
    • H01F7/0242—Magnetic drives, magnetic coupling devices

Definitions

  • This application relates to the technical field of optical lenses, and in particular to a lens module.
  • Lens is a common device in our daily life.
  • the lens in the camera especially the telescopic camera lens.
  • Adjust or adjust the size of the focal length, so the lens bracket in the lens is often movably installed in the base of the lens through a driving mechanism.
  • the lens in the prior art has the problems of high manufacturing and assembly accuracy requirements, and the lens is prone to shake when it is extended and retracted with the lens holder.
  • the present application provides a lens module to solve the problem of high manufacturing and assembly precision requirements of the lens in the prior art, and the problem that the lens is prone to shaking when the lens is extended and retracted with the lens holder.
  • the lens module provided by the present application includes a base, a lens bracket, a driving member, and a magnetic component; the lens bracket is movably mounted on the base; the driving member is used to connect the base and the lens holder
  • the frame is in transmission connection, and can drive the lens bracket to partially extend or contract to the base; the magnetic component is correspondingly disposed on the base and the lens bracket; wherein, the lens bracket can The inner wall of the base is pressed against the inner wall of the base under the magnetic force of the magnetic component.
  • the magnetic assembly includes a first magnetic member and a second magnetic member; the first magnetic member is disposed on the base; the second magnetic member is disposed on the lens holder and Corresponding to the first magnetic member.
  • the first magnetic member and the second magnetic member are arranged to repel each other; the lens holder moves away from the first magnetic member under the repulsive force of the magnetic component .
  • the first magnetic member and the second magnetic member are arranged to attract each other; the lens holder moves toward the first magnetic member under the attractive force of the magnetic component .
  • the base forms an inner chamfer at the corners of two adjacent inner walls;
  • the lens bracket forms an outer chamfer at a corner corresponding to the inner chamfer;
  • a magnetic piece is arranged on the inner chamfer, and the second magnetic piece is arranged on the outer chamfer.
  • the magnetic components are provided in two groups; one group of the magnetic components are correspondingly disposed on the opposite wall surfaces of the base and the lens holder along the first direction; the other group of the magnetic components The components are correspondingly arranged on the opposite wall surfaces of the base and the lens bracket along the second direction; wherein, the first direction and the second direction are perpendicular to each other.
  • a supporting rolling body is further provided between the wall surfaces on which the base and the lens bracket are pressed against each other; the supporting rolling body can roll during the expansion and contraction process of the lens bracket.
  • the inner wall of the base is provided with a mounting baffle
  • the outer wall of the lens bracket is provided with a mounting slot; when the lens bracket is installed on the base, the mounting block
  • the board and the installation slot correspondingly enclose an installation space for installing the supporting rolling body.
  • the driving member is an SMA driving wire; the SMA driving wire can expand and contract under the action of a regulated current to drive the lens holder to partially extend or contract to the base.
  • the base has a corner notch; the lens bracket has a connecting corner corresponding to the corner notch; the midpoint of the SMA drive line is connected and fixed to the connecting corner Section; the two ends of the SMA drive line are respectively connected to the two corners of the base adjacent to the corner gap.
  • the lens module provided by the present application includes a base, a lens bracket, a driver, and a magnetic component; the lens bracket is movably mounted on the base; the driver is used to drive the base and the lens bracket to drive the lens bracket Partially extended or contracted to the base; the magnetic component is correspondingly arranged on the base and the lens holder; wherein the lens holder can be pressed against the inner wall of the base under the magnetic force of the magnetic component, so that the lens holder can be expanded and contracted. It can be relatively fixed with the base perpendicular to the telescopic direction.
  • the lens module When the lens module is in use, first install the lens bracket on the base, and drive the base to the lens bracket through the drive unit, and at this time the lens bracket can press against the base under the magnetic force of the magnetic component
  • the lens holder can maintain precise coaxiality with the base in the telescopic direction, and even if the outer wall of the lens holder and the base
  • the inner wall of the lens is relatively worn during use, and the lens holder can always be pressed against the inner wall of the base under the magnetic force of the magnetic component to avoid the problem of shaking when the lens expands and contracts with the lens holder.
  • FIG. 1 is a schematic diagram of the first structure of a lens module provided by an embodiment of the application.
  • FIG. 2 is a schematic diagram of the second structure of the lens module provided by an embodiment of the application.
  • FIG. 3 is a top view of the lens module in FIG. 1.
  • FIG. 4 is a schematic diagram of a third structure of a lens module provided by an embodiment of the application.
  • FIG. 5 is a schematic diagram of a fourth structure of a lens module provided by an embodiment of the application.
  • FIG. 6 is a top view of the lens module in FIG. 4.
  • an embodiment of the present application provides a lens module.
  • the lens module includes a base 1, a lens bracket 2, a driver 3, and a magnetic component 4;
  • the lens bracket 2 is movably mounted on The base 1;
  • the driving member 3 is used for drivingly connecting the base 1 and the lens holder 2, and can drive the lens holder 2 to partially extend or contract to the base 1;
  • the magnetic component 4 is correspondingly arranged on the base 1 and the lens Bracket 2;
  • the lens bracket 2 can press against the inner wall of the base 1 under the magnetic force of the magnetic assembly 4.
  • the lens bracket 2 When the lens module is in use, first install the lens bracket 2 on the base 1, and drive the base 1 to the lens bracket 2 through the drive member 3. At this time, the lens bracket 2 can be mounted on the magnetic assembly 4 The inner wall of the base 1 is pressed under the action of magnetic force, so that when the driving part 3 drives the lens holder 2 to partially extend or contract on the base 1, the lens holder 2 will not be tilted or shifted in the XY plane, thereby This solves the problem that the lens bracket in the prior art is prone to shaking when it is stretched and retracted.
  • the magnetic assembly 4 includes a first magnetic member 41a and a second magnetic member 42a; the first magnetic member 41a is disposed on the base 1; the second magnetic member 42a is disposed on the lens holder 2 and is connected to the A magnetic member 41a is correspondingly arranged.
  • the magnetic assembly 4 is configured as a first magnetic member 41a and a second magnetic member 42a, and the first magnetic member 41a and the second magnetic member 42a can be respectively disposed on the base along the expansion and contraction direction Z.
  • the inner wall of the holder 1 and the outer wall of the lens holder 2 so that when the lens holder 2 is installed on the base 1, there is a correspondence between the first magnetic member 41a and the second magnetic member 42a so that the lens holder 1 is pressed against the base Moreover, when the lens holder 1 partially extends out of the base 1, a magnetic force can also be generated between the first magnetic member 41a and the second magnetic member 42a.
  • the first magnetic member 41a and the second magnetic member 42a can both be set as permanent magnets, so that the magnetic assembly 4 can always generate a magnetic force so that the lens holder 2 is pressed against the inner wall of the base 1, and the magnetic assembly 4 is set to the above-mentioned first magnetic force
  • the component 41a and the second magnetic component 42a have the advantages of simple structure and capable of stably pressing and confining the lens holder 2 to the base 1.
  • the magnetic assembly 4 may be provided in multiple groups on the inner wall of the base 1 and the outer wall of the lens bracket 2 respectively.
  • the first magnetic member 41a and the second magnetic member 42a are arranged to repel each other; the lens holder 2 has a tendency to move away from the first magnetic member 41a under the repulsive force of the magnetic assembly 4.
  • the same magnetic poles of the first magnetic member 41a and the second magnetic member 42a are arranged opposite to each other, so that the first magnetic member 41a and the second magnetic member 42a repel each other.
  • the lens holder 2 Under the action of the repulsive force of the magnetic component 4, it has a tendency to move away from the first magnetic member 41 and press against the inner wall of the base 1, so that the lens holder can maintain precise coaxiality with the base in the telescopic direction Z.
  • the inner wall of the base 1 provided with the first magnetic member 41a and the outer wall of the lens holder 2 with the second magnetic member 42a are not pressed and contacted, which can also avoid the wear of the magnetic assembly 4 caused by the expansion and contraction process of the lens holder 2.
  • this embodiment also provides another alternative arrangement of the magnetic component 4 in the lens module.
  • the first magnetic member 41b and the second magnetic member 42b are arranged to attract each other, and the lens holder 2 is in the magnetic component 4 Under the action of the attractive force, it has a tendency to move toward the first magnetic member 41b.
  • the different magnetic poles of the first magnetic member 41b and the second magnetic member 42b are arranged opposite to each other, so that the first magnetic member 41b and the second magnetic member 42b can attract each other.
  • the lens holder 2 Under the attractive force of the magnetic component 4, it has a tendency to move toward the first magnetic member 41b and press against the inner wall of the base 1, and it can also be achieved that the lens holder can maintain precise coaxiality with the base in the telescopic direction Z Spend.
  • the lens holder can be 2 Correspondingly add spacers to the inner wall of the base 1.
  • the base 1 forms an inner chamfer 11 at the corners of two adjacent inner walls;
  • the lens bracket 2 forms an outer chamfer 21 at the corner corresponding to the inner chamfer 11;
  • the first magnetic force The piece 41 is arranged on the inner chamfer 11, and the second magnetic piece 42 is arranged on the outer chamfer 21.
  • an inner chamfer 11 is formed at the corners of two adjacent inner walls of the base 1, and an outer chamfer 11 is formed at the corner corresponding to the inner chamfer 11 in the lens holder 2. 21, and respectively set the first magnetic member 41a and the second magnetic member 42a on the inner chamfer 11 and the outer chamfer 21 respectively, so that only one set of magnetic assembly 4 can enable the lens holder 2 to be in the first direction
  • the X pressing limit is located on the inner wall of the base 1
  • the Y pressing limit is located on the inner wall of the base 1 in the second direction, which fully ensures the installation stability of the lens bracket 2 in the base 1, and ensures the lens bracket 2 It can always maintain precise coaxiality with the base 1 in the telescopic direction Z.
  • the angles of the inner chamfer 11 and the outer chamfer 21 can be preferably set to 45°. At this time, the magnetic force generated by the magnetic component 4 has the same magnitude in the first direction X and the second direction Y.
  • two sets of magnetic components 4 are provided; one set of magnetic components 4 are arranged on the opposite wall surfaces of the base 1 and the lens bracket 2 along the first direction X; the other set of magnetic components 4 are arranged along the first direction X.
  • the two directions Y are correspondingly arranged on the opposite wall surfaces of the base 1 and the lens bracket 2; wherein, the first direction X and the second direction Y are perpendicular to each other.
  • the magnetic assembly 4 is provided in two groups and respectively arranged on the opposite wall surfaces of the base 1 and the lens bracket 2 along the first direction X and the second direction Y, respectively.
  • the two sets of magnetic components 4 apply magnetic force between the base 1 and the lens bracket 2 at the same time, which fully ensures that the lens bracket 2 can be pressed against the inner wall of the base 1 along the first direction X, and can be moved along the same time.
  • the second direction Y pressing limit is located on the inner wall of the base 1, and the effects of the two sets of magnetic components 4 do not affect each other. When one of the magnetic components 4 fails, the other set of magnetic components 4 can also work normally.
  • each group of magnetic components 4 in FIG. 4 includes a first magnetic component 41c and a second magnetic component 42c, and the first magnetic component 41c and the second magnetic component 42c attract each other; each group of magnetic components 4 in FIG. 5 It includes a first magnetic member 41d and a second magnetic member 42d, and the first magnetic member 41d and the second magnetic member 42d repel each other.
  • a supporting rolling body 5 is further provided between the walls where the base 1 and the lens bracket 2 are pressed against each other; the supporting rolling body 5 can roll during the expansion and contraction process of the lens bracket 2.
  • the above-mentioned supporting rolling body 5 can be specifically arranged in a spherical or cylindrical shape, and the supporting rolling body 5 is arranged between the wall surfaces of the base 1 and the lens holder 2 pressed against each other.
  • the lens The bracket 2 is indirectly pressed against the base 1 through the supporting rolling element 5, so that when the lens bracket 2 is partially extended or contracted to the base 1, the supporting rolling element 5 will roll, making the base 1 and the lens bracket Rolling friction is generated between the two, which can greatly reduce the friction force during the expansion and contraction of the lens bracket 2, so as to make it easier for the driving member 3 to drive the lens bracket 2 to move up and down.
  • the inner wall of the base 1 is provided with a mounting baffle 12, and the outer wall of the lens bracket 2 is provided with a mounting slot 22; when the lens bracket 2 is installed on the base 1, the mounting baffle 12 and The installation slot 22 correspondingly encloses an installation space for installing the supporting rolling element 5.
  • the above-mentioned mounting baffle 12 can be set to be perpendicular to the inner wall of the base 1, and the above-mentioned mounting slot 22 can be a rectangular slot, so that when the lens bracket 2 is mounted on the base 1, , The installation baffle 12 and the installation slot 22 respectively enclose a square installation space for installing the supporting rolling element 5.
  • the supporting rolling element 5 can be connected to the bottom wall of the installation slot 22, the side wall of the installation slot 22, and the installation
  • the board surface of the baffle 12 and the inner wall of the base 1 form rolling friction in four places, which fully guarantees the all-directional installation limit of the supporting rolling body 5.
  • the driving member 3 is an SMA driving wire; the SMA driving wire can expand and contract under the action of a regulated current to drive the lens holder 2 to extend or contract to the base 1.
  • SMA material Shape Memory Alloy
  • SMA material undergoes a solid phase change when heated, which causes the SMA material to shrink.
  • the SMA material enters the martensite phase.
  • SMA enters the austenite phase, which causes deformation and causes the SMA material to shrink.
  • the SMA drive line made of SMA material can control the expansion and contraction of the SMA drive line itself by regulating the current, so as to adjust the tension of the SMA drive line to drive the lens holder 2 to extend or contract to the base 1, and has a structure It has the advantages of simplicity, small footprint and easy manipulation.
  • the base 1 has a corner notch 13; the lens bracket 2 has a connecting corner 23 corresponding to the corner notch 13; the midpoint of the SMA drive line is connected and fixed to the connecting corner 23; SMA The two ends of the driving wire are respectively connected to the two corners of the base 1 adjacent to the corner notch 13.
  • the midpoint of the SMA drive line is connected and fixed to the connecting corner 23; the two ends of the SMA drive line are respectively connected to the two corners of the base 1 adjacent to the corner notch 13.
  • the tension of the SMA drive line itself can generate components in the first direction X and the second direction Y, which are offset by the magnetic force of the magnetic assembly 4, so as to prevent the lens carrier 2 from moving in the first direction X,
  • the second direction Y is inverted in the plane, which further improves the stability of the lens bracket 2 when it is extended or retracted to the base 1.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Lens Barrels (AREA)

Abstract

本申请涉及光学镜头技术领域，提供了一种镜头模组，该镜头模组包括基座、镜头托架、驱动件和磁力组件；镜头托架活动安装于基座；驱动件用于将基座与镜头托架传动连接，并能驱动镜头托架部分地伸出或收缩于基座；磁力组件对应设置于基座和镜头托架；其中，镜头托架能够在磁力组件的磁力作用下压贴基座的内壁，以使镜头托架伸缩过程中能够与基座在垂直于伸缩方向保持相对固定。由于镜头托架能够在磁力组件的磁力作用下压贴基座的内壁，使镜头托架能够与基座在伸缩方向始终保持精确的同轴度，避免镜头随镜头托架伸缩时出现晃动的问题。

Description

镜头模组 技术领域
本申请涉及光学镜头技术领域，尤其涉及一种镜头模组。
 背景技术
镜头是我们日常生活中比较常见的器件，例如相机中的镜头，尤其是伸缩式相机镜头，在拍摄过程中往往需要对镜头进行变焦或对焦运动的推镜头、拉镜头，以执行景位的远近调节或焦距的大小调节 ，因此镜头中的镜头托架往往都是通过一个驱动机构活动安装于镜头的基座中。
为了保证镜头拍摄效果，镜头进行对焦或变焦时不允许出现晃动等不稳定因素，这也就要求镜头托架与基座在使用过程中始终能够保持较精准的同轴度。这样也就要求镜头的零部件在制作、装配都需要较高的工艺精度，当镜头托架与基座之间出现间隙时，镜头随镜头托架从基座伸缩时就极易出现晃动的问题，影响镜头的成像效果。
综上所述，现有技术中的镜头存在有制作装配精度要求高、镜头随镜头托架伸缩时易出现晃动的问题。
 技术问题
有鉴于此，本申请提供了一种镜头模组，用以解决现有技术中的镜头存在的制作装配装精度要求高、镜头随镜头托架伸缩时易出现晃动的问题。
 技术解决方案
本申请提供的镜头模组包括基座、镜头托架、驱动件和磁力组件;所述镜头托架活动安装于所述基座;所述驱动件用于将所述基座与所述镜头托架传动连接，并能驱动所述镜头托架部分地伸出或收缩于所述基座;所述磁力组件对应设置于所述基座和所述镜头托架;其中，所述镜头托架能够在所述磁力组件的磁力作用下压贴所述基座的内壁。
在一种可能的设计中，所述磁力组件包括第一磁力件和第二磁力件;所述第一磁力件设置于所述基座;所述第二磁力件设置于所述镜头托架并与所述第一磁力件对应设置。
在一种可能的设计中，所述第一磁力件、所述第二磁力件设置成相互排斥;所述镜头托架在所述磁力组件的排斥力作用下具有背离所述第一磁力件运动。
在一种可能的设计中，所述第一磁力件、所述第二磁力件设置成相互吸引;所述镜头托架在所述磁力组件的吸引力作用下具有朝向所述第一磁力件运动。
在一种可能的设计中，所述基座在两个相邻的内壁拐角处形成内倒角;所述镜头托架在与所述内倒角对应的角部形成外倒角;所述第一磁力件设置于所述内倒角，所述第二磁力件设置于所述外倒角。
在一种可能的设计中，所述磁力组件设置有两组;一组所述磁力组件沿第一方向对应设置于所述基座、所述镜头托架相对的壁面;另一组所述磁力组件沿第二方向对应设置于所述基座、所述镜头托架相对的壁面;其中，所述第一方向与所述第二方向相互垂直。
在一种可能的设计中，所述基座与所述镜头托架相互压贴的壁面之间还设置有支撑滚动体;所述支撑滚动体能够在所述镜头托架伸缩过程中滚动。
在一种可能的设计中，所述基座的内壁设置有安装挡板，所述镜头托架的外壁设置有安装卡槽;所述镜头托架安装于所述基座时，所述安装挡板与所述安装卡槽对应围成用于安装所述支撑滚动体的安装空间。
在一种可能的设计中，所述驱动件为SMA驱动线;所述SMA驱动线能够在调控电流的作用下伸缩，以带动所述镜头托架部分地伸出或收缩于所述基座。
在一种可能的设计中，所述基座具有角部缺口;所述镜头托架具有与所述角部缺口对应的连接角部;所述SMA驱动线的中点连接固定于所述连接角部;所述SMA驱动线的两端分别连接所述基座的与所述角部缺口相邻的两个角部。
 有益效果
结合以上技术方案，本申请的有益效果分析如下。
本申请提供的镜头模组包括基座、镜头托架、驱动件和磁力组件；镜头托架活动安装于基座；驱动件用于将基座与镜头托架传动连接，并能驱动镜头托架部分地伸出或收缩于基座；磁力组件对应设置于基座和镜头托架；其中，镜头托架能够在磁力组件的磁力作用下压贴基座的内壁，以使镜头托架伸缩过程中能够与基座在垂直于伸缩方向保持相对固定。
该镜头模组在使用时，首先将镜头托架安装于基座，并通过驱动件将基座与镜头托架传动连接，且此时镜头托架能够在磁力组件的磁力作用下压贴基座的内壁，这样当驱动件驱动镜头托架部分地伸出或收缩于基座时，镜头托架能够与基座在伸缩方向保持精确的同轴度，而且，即使镜头托架的外壁与基座的内壁在使用过程中发生相对磨损，镜头托架也始终能够在磁力组件的磁力作用下压贴基座的内壁，避免镜头随镜头托架伸缩时出现晃动的问题。
 附图说明
本申请实施例的其他特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本申请实施例而了解。本申请实施例的目的和其他优点在说明书以及附图所特别指出的结构来实现和获得。
图1为本申请实施例提供的镜头模组的第一种结构示意图。
图2为本申请实施例提供的镜头模组的第二种结构示意图。
图3为图1中镜头模组的俯视图。
图4为本申请实施例提供的镜头模组的第三种结构示意图。
图5为本申请实施例提供的镜头模组的第四种结构示意图。
图6为图4中镜头模组的俯视图。
附图标记:1-基座;11-内倒角;12-安装挡板;13-角部缺口;2-镜头托架;21-外倒角;22-安装卡槽;23-连接角部;3-驱动件;4-磁力组件;5-支撑滚动体;X-第一方向;Y-第二方向;Z-伸缩方向。
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本申请的实施例，并与说明书一起用于解释本申请的原理。
 本发明的实施方式
为了更好的理解本申请的技术方案，下面结合附图对本申请实施例进行详细描述。
应当明确，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。
在本申请实施例中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请。在本申请实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。
应当理解，本文中使用的术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
需要注意的是，本申请实施例所描述的“上”、“下”、“左”、“右”等方位词是以附图所示的角度来进行描述的，不应理解为对本申请实施例的限定。此外，在上下文中，还需要理解的是，当提到一个元件连接在另一个元件“上”或者“下”时，其不仅能够直接连接在另一个元件“上”或者“下”，也可以通过中间元件间接连接在另一个元件“上”或者“下”。
下面根据本申请实施例提供的镜头模组的结构，对其具体实施例进行说明。
如图1至图6所示，本申请实施例提供了一种镜头模组，该镜头模组包括基座1、镜头托架2、驱动件3和磁力组件4；镜头托架2活动安装于基座1；驱动件3用于将基座1与镜头托架2传动连接，并能驱动镜头托架2部分地伸出或收缩于基座1；磁力组件4对应设置于基座1和镜头托架2；其中，镜头托架2能够在磁力组件4的磁力作用下压贴基座1的内壁。
该镜头模组在使用时，首先将镜头托架2安装于基座1，并通过驱动件3将基座1与镜头托架2传动连接，且此时镜头托架2能够在磁力组件4的磁力作用下压贴基座1的内壁，这样当驱动件3驱动镜头托架2部分地伸出或收缩于基座1时，镜头托架2不会产生倾斜或XY平面内的偏移，从而解决了现有技术中的镜头托架伸缩时易出现晃动的问题。
本实施例的可选方案中，磁力组件4包括第一磁力件41a和第二磁力件42a；第一磁力件41a设置于基座1；第二磁力件42a设置于镜头托架2并与第一磁力件41a对应设置。
如图1或图3所示，将磁力组件4设置成第一磁力件41a和第二磁力件42a，且可以将第一磁力件41a、第二磁力件42a分别沿伸缩方向Z对应设置于基座1的内壁、镜头托架2的外壁，这样当镜头托架2安装于基座1时，第一磁力件41a与第二磁力件42a之间即对应产生使镜头托架1压贴基座的磁力，而且当镜头托架1部分地伸出基座1时，第一磁力件41a与第二磁力件42a之间同样可以产生磁力。
第一磁力件41a、第二磁力件42a可以均设置成永磁体，使磁力组件4可以始终产生磁力使镜头托架2压贴基座1的内壁，将磁力组件4设置成上述的第一磁力件41a、第二磁力件42a，具有结构简单、能够稳定将镜头托架2压贴限位于基座1的优点。
而且，为了使镜头托架2能更好的压贴限位于基座1的内壁，磁力组件4可以在基座1的内壁、镜头托架2的外壁分别对应设置多组。
本实施例的可选方案中，第一磁力件41a、第二磁力件42a设置成相互排斥；镜头托架2在磁力组件4的排斥力作用下具有背离第一磁力件41a运动的趋势。
如图1和图3所示，将第一磁力件41a、第二磁力件42a的相同磁极相对设置，即可使第一磁力件41a、第二磁力件42a相互排斥，此时镜头托架2在磁力组件4的排斥力作用下具有背离第一磁力件41运动的趋势并压贴基座1的内壁，如此即可使得镜头托架能够与基座在伸缩方向Z保持精确的同轴度。而且基座1设置第一磁力件41a的内壁、镜头托架2设置第二磁力件42a的外壁二者并不压贴接触，还能够避免镜头托架2伸缩过程造成磁力组件4磨损的情况。
另外，本实施例还提供了该镜头模组中磁力组件4的另一种可选设置方案，第一磁力件41b、第二磁力件42 b设置成相互吸引，镜头托架2在磁力组件4的吸引力作用下具有朝向第一磁力件41b运动的趋势。
具体的，如图2所示，将第一磁力件41b、第二磁力件42b的不同磁极相对设置，即可使第一磁力件41b、第二磁力件42b相互吸引，此时镜头托架2能够在磁力组件4的吸引力作用下具有朝向第一磁力件41b运动的趋势并压贴基座1的内壁，同样也可以实现使镜头托架能够与基座在伸缩方向Z保持精确的同轴度。
而且，为了避免镜头托架2压贴于基座1的内壁时第一磁力件41b、第二磁力件42b相互吸附接触，造成镜头托架2较难沿伸缩方向Z运动，可以在镜头托架2与基座1的内壁之间相应的增设隔离件。
本实施例的可选方案中，基座1在两个相邻的内壁拐角处形成内倒角11；镜头托架2在与内倒角11对应的角部形成外倒角21；第一磁力件41设置于内倒角11，第二磁力件42设置于外倒角21。
具体的，如图1和图3所示，在基座1在两个相邻的内壁拐角处形成内倒角11、在镜头托架2在与内倒角11对应的角部形成外倒角21，且分别将第一磁力件41a、第二磁力件42a对应设置于内倒角11、外倒角21，这样仅设置一组磁力组件4即可使镜头托架2既能够沿第一方向X压贴限位于基座1的内壁，又能够沿第二方向Y压贴限位于基座1的内壁，充分确保了镜头托架2在基座1中的安装稳定性，保证了镜头托架2始终能够与基座1在伸缩方向Z保持精确的同轴度。
上述内倒角11、外倒角21的角度可优选设置成45°，此时磁力组件4产生的磁力，在第一方向X、第二方向Y上的分量完全大小相等。
本实施例的可选方案中，磁力组件4设置有两组；一组磁力组件4沿第一方向X对应设置于基座1、镜头托架2相对的壁面；另一组磁力组件4沿第二方向Y对应设置于基座1、镜头托架2相对的壁面；其中，第一方向X与第二方向Y相互垂直。
具体的，如图4、图5和图6所示，将磁力组件4设置有两组且分别沿第一方向X、第二方向Y对应设置于基座1、镜头托架2相对的壁面，这样两组磁力组件4同时在基座1、镜头托架2之间施加磁力，充分确保了镜头托架2即能够沿第一方向X压贴限位于基座1的内壁的同时，又能够沿第二方向Y压贴限位于基座1的内壁，而且两组磁力组件4的作用效果不相互影响，当其中的一种磁力组件4失效时，另一组磁力组件4也能够正常工作。
其中，图4中的每组磁力组件4包括一个第一磁力件41c和一个第二磁力件42c，且第一磁力件41c和第二磁力件42c相互吸引；图5中的每组磁力组件4包括一个第一磁力件41d和一个第二磁力件42d，且第一磁力件41 d和第二磁力件42 d相互排斥。
本实施例的可选方案中，基座1与镜头托架2相互压贴的壁面之间还设置有支撑滚动体5；支撑滚动体5能够在镜头托架2伸缩过程中滚动。
具体的，如图1所示，上述的支撑滚动体5可以具体设置成球形或者圆柱形，将支撑滚动体5设置于基座1与镜头托架2相互压贴的壁面之间，此时镜头托架2时通过支撑滚动体5与基座1间接压贴，这样当镜头托架2部分地伸出或收缩于基座1时，支撑滚动体5会滚动，使基座1与镜头托架2之间产生滚动摩擦，从而能够大幅降低镜头托架2伸缩过程中的摩擦力，以更便于驱动件3驱动镜头托架2升降运动。
本实施例的可选方案中，基座1的内壁设置有安装挡板12，镜头托架2的外壁设置有安装卡槽22；镜头托架2安装于基座1时，安装挡板12与安装卡槽22对应围成用于安装支撑滚动体5的安装空间。
具体的，如图1所示，上述的安装挡板12具体可以设置成垂直于基座1的内壁，上述的安装卡槽22可具体矩形槽，这样当镜头托架2安装于基座1时，安装挡板12与安装卡槽22对应围成用于安装支撑滚动体5的方形安装空间，此时支撑滚动体5可以与安装卡槽22的底壁、安装卡槽22的侧壁、安装挡板12的板面、基座1的内壁四处形成滚动摩擦，充分保证了对支撑滚动体5的各向安装限位。
本实施例的可选方案中，驱动件3为SMA驱动线；SMA驱动线能够在调控电流的作用下伸缩，以带动镜头托架2伸出或收缩于基座1。
SMA材料（Shape Memory Alloy，形状记忆合金）的特性是，加热时会发生固态相变，从而导致SMA材料收缩。在低温下，SMA材料进入马氏体相。在高温下，SMA进入奥氏体相，后者引起变形，导致SMA材料收缩。
SMA材料制成的SMA驱动线能够通过调控电流的方式来实现控制SMA驱动线自身的伸缩，以实现调控SMA驱动线自身张力带动镜头托架2伸出或收缩于基座1的功能，具有结构简单、占用空间小以及便于操控的优点。
本实施例的可选方案中，基座1具有角部缺口13；镜头托架2具有与角部缺口13对应的连接角部23；SMA驱动线的中点连接固定于连接角部23；SMA驱动线的两端分别连接基座1的与角部缺口13相邻的两个角部。
具体的，如图1所示，将SMA驱动线的中点连接固定于连接角部23；SMA驱动线的两端分别连接基座1的与角部缺口13相邻的两个角部。此时SMA驱动线自身张力可以产生在第一方向X、第二方向Y的分量，并与磁力组件4的磁力进行抵消，从而避免SMA驱动线伸缩时造成镜头托架2在第一方向X、第二方向Y所在的平面内翻转，进一步提高镜头托架2伸出或收缩于基座1时的稳定性。
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本申请保护的范围之内。

Claims (10)

  1. 一种镜头模组，其特征在于，包括：
    基座；
    镜头托架，活动安装于所述基座；
    驱动件，用于将所述基座与所述镜头托架传动连接，并能驱动所述镜头托架部分地伸出或收缩于所述基座；
    磁力组件，对应设置于所述基座和所述镜头托架；
    其中，所述镜头托架能够在所述磁力组件的磁力作用下压贴所述基座的内壁。
  2. 根据权利要求1所述的镜头模组，其特征在于，所述磁力组件包括：
    第一磁力件，设置于所述基座；
    第二磁力件，设置于所述镜头托架并与所述第一磁力件对应设置。
  3. 根据权利要求2所述的镜头模组，其特征在于，所述第一磁力件、所述第二磁力件设置成相互排斥；
    所述镜头托架在所述磁力组件的排斥力作用下具有背离所述第一磁力件运动的趋势。
  4. 根据权利要求2所述的镜头模组，其特征在于，所述第一磁力件、所述第二磁力件设置成相互吸引；
    所述镜头托架在所述磁力组件的吸引力作用下具有朝向所述第一磁力件运动的趋势。
  5. 根据权利要求3或4所述的镜头模组，其特征在于，所述基座在两个相邻的内壁拐角处形成内倒角；
    所述镜头托架在与所述内倒角对应的角部形成外倒角；
    所述第一磁力件设置于所述内倒角，所述第二磁力件设置于所述外倒角。
  6. 根据权利要求3或4所述的镜头模组，其特征在于，所述磁力组件设置有两组；
    一组所述磁力组件沿第一方向对应设置于所述基座、所述镜头托架相对的壁面；
    另一组所述磁力组件沿第二方向对应设置于所述基座、所述镜头托架相对的壁面；
    其中，所述第一方向与所述第二方向相互垂直。
  7. 根据权利要求1所述的镜头模组，其特征在于，所述基座与所述镜头托架相互压贴的壁面之间还设置有支撑滚动体；
    所述支撑滚动体能够在所述镜头托架伸缩过程中滚动。
  8. 根据权利要求7所述的镜头模组，其特征在于，所述基座的内壁设置有安装挡板，所述镜头托架的外壁设置有安装卡槽；
    所述镜头托架安装于所述基座时，所述安装挡板与所述安装卡槽对应围成用于安装所述支撑滚动体的安装空间。
  9. 根据权利要求1所述的镜头模组，其特征在于，所述驱动件为SMA驱动线；
    所述SMA驱动线能够在调控电流的作用下伸缩，以带动所述镜头托架部分地伸出或收缩于所述基座。
  10. 根据权利要求9所述的镜头模组，其特征在于，所述基座具有角部缺口；
    所述镜头托架具有与所述角部缺口对应的连接角部；
    所述SMA驱动线的中点连接固定于所述连接角部；
    所述SMA驱动线的两端分别连接所述基座的与所述角部缺口相邻的两个角部。
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