Invention Grant
US08773574B2 Image pickup apparatus having improved contrast autofocus accuracy
失效
具有改善的对比度自动对焦精度的摄像装置
- Patent Title: Image pickup apparatus having improved contrast autofocus accuracy
- Patent Title (中): 具有改善的对比度自动对焦精度的摄像装置
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Application No.: US13556707Application Date: 2012-07-24
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Publication No.: US08773574B2Publication Date: 2014-07-08
- Inventor: Koji Inoue
- Applicant: Koji Inoue
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Cowan, Liebowitz & Latman, P.C.
- Priority: JP2009-136313 20090605
- Main IPC: G03B13/00
- IPC: G03B13/00 ; H04N5/232

Abstract:
An image pickup apparatus includes an image pickup device that includes a plurality of focus detection pixels, a phase difference detection type of a first focus detector, a contrast detection type of a second focus detector, and a controller. The controller is configured to allow the second focus detector to continue the focus detection when the shift amount detected by the first focus detector is larger than a threshold even when the second focus detector detects the lens position corresponding to the peak of the contrast value, and to move the image pickup lens to a lens position that provides a peak of a contrast value detected by the second focus detector when the shift amount is the threshold or smaller.
Public/Granted literature
- US20120287330A1 IMAGE PICKUP APPARATUS HAVING IMPROVED CONTRAST AUTOFOCUS ACCURACY Public/Granted day:2012-11-15
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