CN212160204U - 光学元件驱动机构 - Google Patents

光学元件驱动机构 Download PDF

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Publication number
CN212160204U
CN212160204U CN202020261654.0U CN202020261654U CN212160204U CN 212160204 U CN212160204 U CN 212160204U CN 202020261654 U CN202020261654 U CN 202020261654U CN 212160204 U CN212160204 U CN 212160204U
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China
Prior art keywords
optical element
driving mechanism
axis
element driving
movable portion
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范振贤
蔡淞贸
吴嘉哲
李岳霖
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TDK Taiwan Corp
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TDK Taiwan Corp
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K41/00Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02Linear motors; Sectional motors
    • H02K41/035DC motors; Unipolar motors
    • H02K41/0352Unipolar motors
    • H02K41/0354Lorentz force motors, e.g. voice coil motors
    • H02K41/0356Lorentz force motors, e.g. voice coil motors moving along a straight path
    • GPHYSICS
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    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4201Packages, e.g. shape, construction, internal or external details
    • G02B6/4204Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4214Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
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    • G02B7/04Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/08Mountings, 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
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    • G02B7/182Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
    • G02B7/1821Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors for rotating or oscillating mirrors
    • GPHYSICS
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    • G03B30/00Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
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    • G03B5/00Adjustment of optical system relative to image or object surface other than for focusing
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
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    • G03B5/06Swinging lens about normal to the optical axis
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/18Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
    • G02B7/1805Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for prisms
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
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    • G03B13/36Autofocus systems
    • GPHYSICS
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    • G03B17/00Details of cameras or camera bodies; Accessories therefor
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    • GPHYSICS
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    • G03B2205/00Adjustment of optical system relative to image or object surface other than for focusing
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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
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    • GPHYSICS
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    • G03B2205/00Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0046Movement of one or more optical elements for zooming
    • GPHYSICS
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    • G03B2205/00Adjustment of optical system relative to image or object surface other than for focusing
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    • H02KDYNAMO-ELECTRIC MACHINES
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    • H02K11/01Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for shielding from electromagnetic fields, i.e. structural association with shields
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
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    • H02K11/20Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21Devices for sensing speed or position, or actuated thereby
    • H02K11/215Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
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    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Lens Barrels (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Studio Devices (AREA)
  • Adjustment Of Camera Lenses (AREA)

Abstract

本实用新型提供一种光学元件驱动机构,用以承载一光学元件并驱动该光学元件运动。前述光学元件驱动机构包括一第一活动部、一固定部以及一驱动组件。第一活动部可相对于固定部运动,且驱动组件用以驱动第一活动部相对于固定部运动。

Description

光学元件驱动机构
技术领域
本实用新型涉及一种光学元件驱动机构。更具体地来说,本实用新型涉及一种驱动光学元件旋转的光学元件驱动机构。
背景技术
随着科技的发展,现今许多电子装置(例如平板电脑或智能型手机)都配有镜头模块而具有照相或录影的功能。这些电子装置的使用越来越普遍,并朝着便利和轻薄化的设计方向进行发展,以提供使用者更多的选择。然而,当需要将焦距较长的镜头设置于前述电子装置中时,会造成电子装置厚度的增加,进而不利于电子装置的轻薄化。
实用新型内容
为了解决上述现有的问题点,本实用新型提供一种光学元件驱动机构,用以承载一光学元件并驱动该光学元件运动。前述光学元件驱动机构包括一第一活动部、一固定部以及一驱动组件。第一活动部可相对于固定部运动,且驱动组件用以驱动第一活动部相对于固定部运动。
本实用新型一些实施例中,前述光学元件用以将一光线的行进方向由一入射方向调整为一出射方向,且驱动组件可驱动第一活动部相对于固定部绕一第一轴转动,其中入射方向和出射方向不平行,且第一轴垂直于入射方向或出射方向。
本实用新型一些实施例中,前述光学元件驱动机构更包括一第二活动部,光学元件设置于第二活动部上,且驱动组件可驱动第二活动部相对于第一活动部绕一第二轴转动,其中第二轴和第一轴之间形成一锐角。前述锐角可介于45°~90°。第二轴和出射方向未平行或垂直。当驱动组件驱动第一活动部相对于固定部绕该第一轴转动时,第二轴绕第一轴转动。
本实用新型一些实施例中,前述第一活动部包括多个第一支撑部、多个第二支撑部以及多个连接部。第一支撑部枢接固定部。第二支撑部枢接第二活动部。连接部连接第一支撑部和第二支撑部。第一支撑部沿第一轴排列,且第二支撑部沿第二轴排列。
本实用新型一些实施例中,前述第一活动部具有一C字型结构。至少一第一支撑部和至少一第二支撑部分别设置于C字型结构的端部。
本实用新型一些实施例中,前述固定部包括多个第一结合部,且第一支撑部埋设于第一结合部中。第一结合部具有多个倒角,且第一支撑部接触这些倒角。第二活动部包括多个第二结合部,且第二支撑部埋设于第二结合部中。第二结合部具有多个倒角,且第二支撑部接触这些倒角。
本实用新型一些实施例中,从入射方向观察时,第一轴和第二轴的交点邻近光学元件的中心。
本实用新型一些实施例中,前述第一活动部具有金属。
附图说明
图1表示本实用新型一实施例的电子装置的示意图。
图2表示本实用新型一实施例的电子装置的局部剖视图。
图3表示本实用新型一实施例的光学元件驱动机构的示意图。
图4表示本实用新型一实施例的光学元件驱动机构的***图。
图5表示本实用新型一实施例中的框架的示意图。
图6表示本实用新型一实施例的光学元件驱动机构去除外壳后的示意图。
图7表示本实用新型一实施例中的第一活动部的示意图。
图8表示图6中沿8-A-8-A方向的剖视图。
图9表示本实用新型一实施例中的第二活动部的示意图。
图10表示图9中沿8-B-8-B方向的剖视图。
附图标记说明如下:
8-10 光学元件驱动机构
8-20 电子装置
8-30 光学元件
8-31 第一面
8-32 第二面
8-33 光学元件的中心
8-100 固定部
8-110 底座
8-111 开口
8-120 框架
8-121 本体
8-121A 第一段部
8-121B 第二段部
8-121C 第三段部
8-122 第一结合部
8-123 接触部
8-124 板体
8-125 穿孔
8-126 倒角
8-130 外壳
8-200 第一活动部
8-210 第一支撑部
8-220 第二支撑部
8-230 连接部
8-300 第二活动部
8-310 第二结合部
8-311 板体
8-312 穿孔
8-313 倒角
8-330 凹陷部
8-340 凹槽
8-400 驱动组件
8-410 第一电磁驱动组件
8-420 第二电磁驱动组件
8-430 电路板
8-440 位置感测元件
8-AX1 第一轴
8-AX2 第二轴
8-D1 入射方向
8-D2 出射方向
8-L 光线
8-R1 旋转轴
8-R2 旋转轴
8-S 感光模块
8-α 锐角
具体实施方式
以下说明本实用新型实施例的光学元件驱动机构。然而,可轻易了解本实用新型实施例提供许多合适的创作概念而可实施于广泛的各种特定背景。所揭示的特定实施例仅仅用于说明以特定方法使用本实用新型,并非用以局限本实用新型的范围。
除非另外定义,在此使用的全部用语(包括技术及科学用语)具有与此篇公开所属的普通技术人员所通常理解的相同涵义。能理解的是这些用语,例如在通常使用的字典中定义的用语,应被解读成具有一与相关技术及本公开的背景或上下文一致的意思,而不应以一理想化或过度正式的方式解读,除非在此特别定义。
首先请参阅图1、图2,本实用新型一实施例的光学元件驱动机构8-10可装设于一电子装置8-20内以承载一光学元件8-30,并可驱动前述光学元件8-30相对于电子装置8-20中的感光模块8-S旋转,来达到晃动补偿的目的。前述电子装置8-20例如可为具有照相或摄影功能的智能型手机或是数码相机,而前述光学元件8-30则例如可为棱镜或反射镜。在照相或摄影时,光线8-L可由一入射方向8-D1进入光学元件驱动机构8-10中,且在被前述光学元件8-30所反射后,光线8-L会沿一出射方向8-D2移动并抵达感光模块8-S。
需特别说明的是,在本实施例中,光线8-L是由光学元件8-30的第一面8-31进入光学元件8-30,并由第二面8-32离开光学元件,但于一些实施例中,光学元件驱动机构8-10的设置方位可改变,使得光线8-L由光学元件8-30的第二面8-32进入光学元件8-30,并由第一面8-31离开光学元件。换言之,于一些实施例中,入射方向8-D1和出射方向8-D2可互换。
图3和图4分别表示前述光学元件驱动机构8-10的示意图和***图。如图3、图4所示,前述光学元件驱动机构8-10主要包括一固定部8-100、一第一活动部8-200、一第二活动部8-300以及一驱动组件8-400。
固定部8-100包括一底座8-110、一框架8-120以及一外壳8-130。底座8-110和框架8-120可固定地结合,且外壳8-130可包覆底座8-110、框架8-120以及前述第一活动部8-200、第二活动部8-300和驱动组件8-400,以保护前述元件不被外部零件撞击。
如图4~图6所示,框架8-120包括一本体8-121和两个第一结合部8-122。本体8-121具有一C字型结构,包括一第一段部8-121A、一第二段部8-121B以及一第三段部8-121C。第二段部8-121B连接第一段部8-121A和第三段部8-121C,且第二段部8-121B的长轴方向大致垂直于第一段部8-121A的长轴方向以及第三段部8-121C的长轴方向。
前述两个第一结合部8-122设置于本体8-121面向底座8-110的表面上,且是以一第一轴8-AX1的方向排列。由于第一轴8-AX1相对于第一段部8-121A和第二段部8-121B的长轴方向倾斜,因此在本实施例中,一个第一结合部8-122会邻近于第二段部8-121B和第三段部8-121C的连接处,另一个第一结合部8-122则会邻近于第一段部8-121A未连接第二段部8-121B的端部。
此外,框架8-120更具有至少一接触部8-123。接触部8-123朝向底座8-110延伸,且其在出射方向8-D2上的厚度会大于第一结合部8-122的厚度。因此,当底座8-110和框架8-120结合时,接触部8-123可接触底座8-110,而第一结合部8-122和底座8-110之间则会形成一间隙。
请参阅图7,在本实施例中,第一活动部8-200同样具有一C字型结构,且包括两个第一支撑部8-210、两个第二支撑部8-220以及多个连接部8-230。两个第一支撑部8-210沿第一轴8-AX1排列,两个第二支撑部8-220沿一第二轴8-AX2排列,且连接部8-230连接第一支撑部8-210和第二支撑部8-220。第一轴8-AX1和第二轴8-AX2之间可形成一锐角8-α(举例而言,可介于45°~90°(例如60°))。因此,在第一活动部8-200的前述结构中,一个第一支撑部8-210和一个第二支撑部8-220会分别位于C字型结构的两个端部上。于本实施例中,从入射方向8-D1观察时,第一轴8-AX1和第二轴8-AX2的交点邻近光学元件8-30的中心8-33。
如图6、图8所示,第一支撑部8-210具有球体结构,每个第一结合部8-122具有两片板体8-124,且每个板体8-124上形成有穿孔8-125。两片板体8-124之间的间距小于第一支撑部8-210的直径,且穿孔8-125的直径亦小于第一支撑部8-210的直径。当第一活动部8-200连接至固定部8-100时,第一支撑部8-210会设置于第一结合部8-122中,第一支撑部8-210会被两片板体8-124所夹置并进入穿孔8-125中。如此一来,第一活动部8-200即可通过第一支撑部8-210和第一结合部8-122而与固定部8-100枢接。第一活动部8-200可相对于固定部8-100绕第一轴8-AX1旋转。
在本实施例中,第一活动部8-200可具有金属,且穿孔8-125上与第一支撑部8-210接触的部分可具有倒角8-126,以减少第一支撑部8-210旋转时,第一支撑部8-210和第一结合部8-122之间因摩擦产生的碎屑。
请参阅图9、图10,第二活动部8-300例如可为一光学元件承载座,前述光学元件8-30可设置于其上。第二活动部8-300具有两个沿第二轴8-AX2排列的第二结合部8-310。每个第二结合部8-310具有两片板体8-311,且每个板体8-311上形成有穿孔8-312。两片板体8-311之间的间距小于第二支撑部8-220的直径,且穿孔8-312的直径亦小于第二支撑部8-220的直径。当第二活动部8-300连接至第一活动部8-200时,第二支撑部8-220会设置于第二结合部8-310中,第二支撑部8-220会被两片板体8-311所夹置并进入穿孔8-312中。如此一来,第二活动部8-300即可通过第二支撑部8-220和第二结合部8-310而与第一活动部8-200枢接。第二活动部8-300可相对于第一活动部8-200绕第二轴8-AX2旋转。
在本实施例中,第一活动部8-200可具有金属,且穿孔8-312上与第二支撑部8-220接触的部分可具有倒角8-313,以减少第二支撑部8-220旋转时,第二支撑部8-220和第二结合部8-310之间因摩擦产生的碎屑。
需特别说明的是,由于第一活动部8-200可相对于固定部8-100绕第一轴8-AX1旋转,因此在第一活动部8-200转动时,第二轴8-AX2也会同时绕第一轴8-AX1旋转,进而使得第二轴8-AX2未垂直或平行于出射方向8-D2。
另外,第二活动部8-300的外表面和底面上可更分别具有多个凹陷部8-330和一凹槽8-340。当第一活动部8-200和第二活动部8-300结合时,第一活动部8-200的至少部分(例如连接部8-230)会容置于凹槽8-340中。
请回到图4,驱动组件8-400包括至少一第一电磁驱动元件8-410、至少一第二电磁驱动元件8-420、一电路板8-430以及至少一位置感测元件8-440。
电路板8-430设置于固定部8-100上,且夹设于底座8-110和外壳8-130之间。第一电磁驱动元件8-410设置于电路板8-430上并穿过底座8-110上的开口8-111。第二电磁驱动元件8-420则设置于第二活动部8-300上并容置于凹陷部8-330中。其中第一电磁驱动元件8-410和第二电磁驱动元件8-420相互对应。
于本实施例中,第一电磁驱动元件8-410为线圈,而第二电磁驱动元件8-420为磁铁。当电流流经第一电磁驱动元件8-410时,第一电磁驱动元件8-410和第二电磁驱动元件8-420之间会产生电磁作用,进而施加驱动力至前述第二活动部8-300。
如图4所示,由于第一电磁驱动元件8-410和第二电磁驱动元件8-420位于第二活动部8-300的左侧、右侧和背侧,因此可提供不同方向的驱动力至第二活动部8-300。又由于第一活动部8-200可相对于固定部8-100绕第一轴8-AX1旋转,第二活动部8-300可相对于第一活动部8-200绕第二轴8-AX2旋转,因此在提供适当的驱动力后,驱动组件8-400即可带动第二活动部8-300以及设置于第二活动部8-300上的光学元件8-30绕旋转轴8-R1及/或8-R2旋转(图3),其中旋转轴8-R1、8-R2平行或垂直于光线8-L的出射方向8-D2,以保持射向物体的光线水平偏移。
位置感测元件8-440设置于电路板8-430上,且对应第二电磁驱动元件8-420,用以检测第二电磁驱动元件8-420的位置,以获得第二活动部8-300相对于固定部8-100的旋转角度。
举例而言,位置感测元件8-440可为霍尔效应感测器(Hall Sensor)、磁阻效应感测器(Magnetoresistance Effect Sensor,MR Sensor)、巨磁阻效应感测器(GiantMagnetoresistance Effect Sensor,GMR Sensor)、穿隧磁阻效应感测器(TunnelingMagnetoresistance Effect Sensor,TMR Sensor)、或磁通量感测器(Fluxgate)。
综上所述,本实用新型提供一种光学元件驱动机构,用以承载一光学元件并驱动该光学元件运动。前述光学元件驱动机构包括一第一活动部、一固定部以及一驱动组件。第一活动部可相对于固定部运动,且驱动组件用以驱动第一活动部相对于固定部运动。
虽然本实用新型的实施例及其优点已公开如上,但应该了解的是,任何所属技术领域中技术人员,在不脱离本实用新型的精神和范围内,当可作更动、替代与润饰。此外,本实用新型的保护范围并未局限于说明书内所述特定实施例中的工艺、机器、制造、物质组成、装置、方法及步骤,任何所属技术领域中技术人员可从本实用新型揭示内容中理解现行或未来所发展出的工艺、机器、制造、物质组成、装置、方法及步骤,只要可以在此处所述实施例中实施大抵相同功能或获得大抵相同结果皆可根据本实用新型使用。因此,本实用新型的保护范围包括上述工艺、机器、制造、物质组成、装置、方法及步骤。另外,每一权利要求构成个别的实施例,且本实用新型的保护范围也包括各个权利要求及实施例的组合。
虽然本实用新型以前述数个较佳实施例公开如上,然其并非用以限定本实用新型。本实用新型所属技术领域中具有通常知识者,在不脱离本实用新型的精神和范围内,当可做些许的更动与润饰。因此本实用新型的保护范围当视后附的权利要求所界定者为准。此外,每个权利要求建构成一独立的实施例,且各种权利要求及实施例的组合皆介于本实用新型的范围内。

Claims (16)

1.一种光学元件驱动机构,用以承载一光学元件并驱动该光学元件运动,其特征在于,包括:
一第一活动部;
一固定部,该第一活动部可相对于该固定部运动;以及
一驱动组件,用以驱动该第一活动部相对于该固定部运动,其中该光学元件用以将一光线的行进方向由一入射方向调整为一出射方向,且该驱动组件可驱动该第一活动部相对于该固定部绕一第一轴转动,其中该入射方向和该出射方向不平行,且该第一轴垂直于该入射方向或该出射方向。
2.如权利要求1所述的光学元件驱动机构,其特征在于,该光学元件驱动机构更包括一第二活动部,该光学元件设置于该第二活动部上,且该驱动组件可驱动该第二活动部相对于该第一活动部绕一第二轴转动,其中该第二轴和该第一轴之间形成一锐角。
3.如权利要求2所述的光学元件驱动机构,其特征在于,该锐角介于45°~90°。
4.如权利要求2所述的光学元件驱动机构,其特征在于,该第二轴和该出射方向未平行或垂直。
5.如权利要求2所述的光学元件驱动机构,其特征在于,当该驱动组件驱动该第一活动部相对于该固定部绕该第一轴转动时,该第二轴绕该第一轴转动。
6.如权利要求2所述的光学元件驱动机构,其特征在于,该驱动组件可驱动该第二活动部相对于该固定部绕一旋转轴转动,且该旋转轴平行或垂直该入射方向。
7.如权利要求2所述的光学元件驱动机构,其特征在于,该第一活动部包括:
多个第一支撑部,枢接该固定部;
多个第二支撑部,枢接该第二活动部;以及
多个连接部,连接所述多个第一支撑部和所述多个第二支撑部。
8.如权利要求7所述的光学元件驱动机构,其特征在于,所述多个第一支撑部沿该第一轴排列,且所述多个第二支撑部沿该第二轴排列。
9.如权利要求7所述的光学元件驱动机构,其特征在于,该第一活动部具有一C字型结构。
10.如权利要求9所述的光学元件驱动机构,其特征在于,至少一该第一支撑部和至少一该第二支撑部分别设置于该C字型结构的端部。
11.如权利要求7所述的光学元件驱动机构,其特征在于,该固定部包括多个第一结合部,且所述多个第一支撑部埋设于所述多个第一结合部中。
12.如权利要求11所述的光学元件驱动机构,其特征在于,所述多个第一结合部具有多个倒角,且所述多个第一支撑部接触所述多个倒角。
13.如权利要求7所述的光学元件驱动机构,其特征在于,该第二活动部包括多个第二结合部,且所述多个第二支撑部埋设于所述多个第二结合部中。
14.如权利要求13所述的光学元件驱动机构,其特征在于,所述多个第二结合部具有多个倒角,且所述多个第二支撑部接触所述多个倒角。
15.如权利要求2所述的光学元件驱动机构,其特征在于,从该入射方向观察时,该第一轴和该第二轴的交点邻近该光学元件的中心。
16.如权利要求2所述的光学元件驱动机构,其特征在于,该第一活动部具有金属。
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