发明授权
- 专利标题： Device for confirming the depth of focus of a camera
- 专利标题（中）： 用于确认照相机焦点深度的设备
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申请号： US946167申请日： 1978-09-27
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公开(公告)号： US4194819A公开(公告)日： 1980-03-25
- 发明人: Fumio Ito , Masayuki Suzuki , Hiroyashu Murakami , Nobuaki Date , Tadashi Ito , Akio Sunouchi
- 申请人： Fumio Ito , Masayuki Suzuki , Hiroyashu Murakami , Nobuaki Date , Tadashi Ito , Akio Sunouchi
- 申请人地址： JPX 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： JPX Tokyo
- 优先权： JPX51-49108 19760428
- 主分类号： G03B7/081
- IPC分类号： G03B7/081 ; G03B9/07 ; G03B7/08 ; G03B9/02
摘要：
The present invention relates to a camera so designed that the aperture preset mechanism as well as the aperture adjusting mechanism at the side of the camera body are operative by means of the first urging mechanism provided in the lens barrel. The aperture adjusting mechanism is operated by means of the release operation of the camera so as to close the aperture preset mechanism down to a certain determined aperture value. Between the aperture adjusting mechanism and the aperture preset mechanism an intermediary member and the second urging mechanism are provided. By means of operating the focus depth confirmation member, the aperture preset mechanism is closed down to a certain determined aperture value through the intermediary member. The camera is brought into the state ready for taking a picture by means of the second urging mechanism upon releasing the focus depth confirmation operation.
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