发明授权
- 专利标题: Camera system, camera and lens apparatus
- 专利标题(中): 相机系统,相机和镜头设备
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申请号: US10664752申请日: 2003-09-18
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公开(公告)号: US06847785B2公开(公告)日: 2005-01-25
- 发明人: Seiichi Kashiwaba , Toru Kawai , Masanori Ishikawa , Shigeki Sato
- 申请人: Seiichi Kashiwaba , Toru Kawai , Masanori Ishikawa , Shigeki Sato
- 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
- 代理机构: Morgan & Finnegan, LLP
- 优先权: JP2002-276283 20020920
- 主分类号: G02B7/08
- IPC分类号: G02B7/08 ; G02B7/09 ; G02B7/28 ; G03B13/36 ; H04N5/232 ; H04N101/00
摘要:
A camera system which controls the driving of a focus lens through overlap control with a high degree of accuracy, is disclosed. The camera system comprises a lens apparatus with an image-taking optical system and a camera on which the lens apparatus is mountable. The camera system comprises a focus detection unit detecting a focusing state of the image-taking optical system, a driving unit driving the focus lens unit, and a controller controlling the driving speed of the focus lens unit and controls the focus detection unit to perform a focus detection operation at least once while the focus lens unit is moved. The controller sets the driving speed of the focus lens unit at the time of at least a final focus detection operation while it is moved toward an in-focus position, to a speed decelerated from the driving speed before the final focus detection operation.
公开/授权文献
- US20040057714A1 Camera system, camera and lens apparatus 公开/授权日:2004-03-25