Invention Grant
- Patent Title: Focus detecting apparatus and image pickup apparatus
- Patent Title (中): 对焦检测装置和摄像装置
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Application No.: US11478243Application Date: 2006-06-28
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Publication No.: US07880799B2Publication Date: 2011-02-01
- Inventor: Ryo Yamasaki
- Applicant: Ryo Yamasaki
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A., Inc. I.P. Division
- Priority: JP2005-191187 20050630
- Main IPC: H04N5/232
- IPC: H04N5/232
Abstract:
A focus detecting apparatus includes a splitter for splitting a light from an image pickup lens to form at least a pair of images, a photoelectric conversion element for photoelectrically converting at least the pair of images, the focus detecting apparatus detecting a focusing status of the image pickup lens based on a signal from the photoelectric conversion element, and a light blocking mask for blocking the light from entering the photoelectric conversion element, the light blocking mask having a curve shape in a moving direction of the image that varies according to an image height.
Public/Granted literature
- US20070002161A1 Focus detecting apparatus and image pickup apparatus Public/Granted day:2007-01-04
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