Invention Grant
- Patent Title: Shooting optical system
- Patent Title (中): 拍摄光学系统
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Application No.: US12467301Application Date: 2009-05-17
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Publication No.: US08149320B2Publication Date: 2012-04-03
- Inventor: Mikio Sakai
- Applicant: Mikio Sakai
- 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: JP2008-130619 20080519
- Main IPC: G02B13/16
- IPC: G02B13/16 ; H04N5/225

Abstract:
A shooting optical system for performing flange back adjustment by moving a lens unit included in the shooting optical system in an optical axis direction includes: a drive gear engaging a lens holding frame for holding the lens unit; a drive unit for rotating the drive gear; a first gear rotating relatively to the drive gear; an operation unit for the flange back adjustment, for rotating the first gear; a detection unit for detecting a relative positional relationship between the first gear and the drive gear; and a control unit for driving the drive unit so as to rotate the drive gear based on a detection signal detected by the detection unit, thereby moving the lens holding frame in the optical axis direction so that the flange back adjustment is performed.
Public/Granted literature
- US20090284640A1 SHOOTING OPTICAL SYSTEM Public/Granted day:2009-11-19
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