发明授权
US08355626B2 Lens-interchangeable camera performing focus control, lens barrel, and program
有权
透镜可互换的相机执行对焦控制，镜筒和程序
- 专利标题： Lens-interchangeable camera performing focus control, lens barrel, and program
- 专利标题（中）： 透镜可互换的相机执行对焦控制，镜筒和程序
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申请号： US13109378申请日： 2011-05-17
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公开(公告)号： US08355626B2公开(公告)日： 2013-01-15
- 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
- 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
- 代理机构： Rossi, Kimms & McDowell LLP
- 优先权： JP2010-113841 20100518
- 主分类号： G03B13/22
- IPC分类号： G03B13/22
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.
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