发明申请
US20110286733A1 LENS-INTERCHANGEABLE CAMERA PERFORMING FOCUS CONTROL, LENS BARREL, AND PROGRAM
有权
镜头可互换摄像机执行焦点控制，镜头条和程序
- 专利标题： LENS-INTERCHANGEABLE CAMERA PERFORMING FOCUS CONTROL, LENS BARREL, AND PROGRAM
- 专利标题（中）： 镜头可互换摄像机执行焦点控制，镜头条和程序
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申请号： US13109378申请日： 2011-05-17
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公开(公告)号： US20110286733A1公开(公告)日： 2011-11-24
- 发明人: Masanori Ishikawa , Masahisa Tamura , Tadanori Okada , Takumi Yamanaka , Kunihiko Sasaki , Yasushi Murakami , Shota Shimada , Takeya Nakayama
- 申请人： Masanori Ishikawa , Masahisa Tamura , Tadanori Okada , Takumi Yamanaka , Kunihiko Sasaki , Yasushi Murakami , Shota Shimada , Takeya Nakayama
- 申请人地址： JP Tokyo
- 专利权人： CANON KABUSHIKI KAISHA
- 当前专利权人： CANON KABUSHIKI KAISHA
- 当前专利权人地址： JP Tokyo
- 优先权： JP2010-113841 20100518
- 主分类号： G03B13/34
- IPC分类号： G03B13/34
摘要：
A lens-interchangeable camera includes a focus detector performing focus detection and a controller performing a drive control of a lens based on a defocus amount. The controller finishes focusing operation without driving the lens when the defocus amount is out a range of a first in-focus determination width, and performs the focusing operation when the defocus amount is out a range of the first in-focus determination width. The controller finishes the focusing operation without performing the focus detection again after completing the drive when the defocus amount is out a range of a second in-focus determination width, and performs the focus detection again after completing the drive when the defocus amount is out a range of the second in-focus determination width. The second in-focus determination width is set to be greater than the first in-focus determination width and be greater than or equal to a drive limit value.