Invention Grant
US07940482B2 Lens drive apparatus and image pickup apparatus including lens drive apparatus
有权
透镜驱动装置和包括透镜驱动装置的图像拾取装置
- Patent Title: Lens drive apparatus and image pickup apparatus including lens drive apparatus
- Patent Title (中): 透镜驱动装置和包括透镜驱动装置的图像拾取装置
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Application No.: US12470398Application Date: 2009-05-21
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Publication No.: US07940482B2Publication Date: 2011-05-10
- Inventor: Koji Sato
- Applicant: Koji Sato
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon USA Inc IP Division
- Priority: JP2008-139166 20080528
- Main IPC: G02B7/02
- IPC: G02B7/02

Abstract:
A lens drive apparatus that can prevent a propulsion force generated in a direction other than an optical axis direction without a second yoke, reduce a size of the entire apparatus, and high-accurately drive a lens holding frame in the optical axis direction. The apparatus including: a member to be driven that holds a lens, is movable in the optical axis direction, and is guided and supported in a lens barrel; a movable coil wound with at least two sides in parallel to the optical axis direction, and mounted to a part of the member to be driven; and a magnet placed to face the movable coil in parallel to the optical axis direction, and provided in the lens barrel, wherein the movable coil is configured so that at least one side of the two sides and one side other than the two sides face surfaces of the magnet.
Public/Granted literature
- US20090296241A1 LENS DRIVE APPARATUS AND IMAGE PICKUP APPARATUS INCLUDING LENS DRIVE APPARATUS Public/Granted day:2009-12-03
Information query
IPC分类:
G | 物理 |
G02 | 光学 |
G02B | 光学元件、系统或仪器 |
G02B7/00 | 光学元件的安装、调整装置或不漏光连接 |
G02B7/02 | .用于透镜 |