Invention Grant
- Patent Title: Optical element driving apparatus and optical apparatus
- Patent Title (中): 光学元件驱动装置和光学装置
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Application No.: US13669567Application Date: 2012-11-06
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Publication No.: US08830604B2Publication Date: 2014-09-09
- Inventor: Katsuhiko Sato
- Applicant: Canon Kabushiki Kaisha
- Applicant Address: JP
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP
- Agency: Rossi, Kimms & McDowell LLP
- Priority: JP2011-246836 20111110
- Main IPC: G02B7/02
- IPC: G02B7/02 ; G02B7/10

Abstract:
The optical element driving apparatus includes a voice coil motor moving an optical element in a first direction, and a magnetic sensor detecting a position of the optical element. A yoke of the motor includes a first yoke portion having a magnet attaching surface to which the magnet is attached and a second yoke portion disposed away from the first yoke portion in a second direction so as to form a space with magnet, allowing movement of a coil of the motor in the first direction. The second yoke portion is disposed closer to the magnetic sensor than the first yoke portion in a plane orthogonal to the first direction. In a third direction orthogonal to the first and second directions, a magnetic path width A of the second yoke portion and a width C of the magnet have the following relationship of A>C.
Public/Granted literature
- US20130120860A1 OPTICAL ELEMENT DRIVING APPARATUS AND OPTICAL APPARATUS Public/Granted day:2013-05-16
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 |