Invention Grant
- Patent Title: Optical element positioning apparatus
- Patent Title (中): 光学元件定位装置
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Application No.: US12270287Application Date: 2008-11-13
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Publication No.: US08174707B2Publication Date: 2012-05-08
- Inventor: Makoto Mizuno
- Applicant: Makoto Mizuno
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A., Inc. IP Division
- Priority: JP2007-298356 20071116; JP2008-284974 20081106
- Main IPC: G01B11/14
- IPC: G01B11/14

Abstract:
An optical element positioning apparatus of the present invention includes a moving unit including an optical element 2, a drive mechanism 100 configured to drive the moving unit, a position measuring sensor 130 configured to measure a position of the optical element 2, and an optical element controller 10 configured to control the drive mechanism 100 based on a measurement result by the position measuring sensor 130. An incident position (p point) at which a principal ray of a central field enters the optical element 2 is displaced from an optical axis of an optical system including the optical element 2, and the position measuring sensor 130 measures the incident position in an optical axis direction.
Public/Granted literature
- US20090128831A1 OPTICAL ELEMENT POSITIONING APPARATUS Public/Granted day:2009-05-21
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