发明名称 |
Image magnification control device for a camera |
摘要 |
An image magnification control device for a camera. Control focal length required to maintain an image magnification constant is computed based upon defocus information detected by analyzing a light that passes through a photographic lens. In case a focal length of the photographic lens moves out of a range wherein the set image magnification can be obtained, various options, such as a shutter-release lock operation, can be executed depending upon the chosen design of the camera.
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申请公布号 |
US5708869(A) |
申请公布日期 |
1998.01.13 |
申请号 |
US19960701759 |
申请日期 |
1996.08.22 |
申请人 |
ASAHI KOGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
SUZUKI, NOBORU;TOJI, SHIGEO;KAWASAKI, MASAHIRO |
分类号 |
G02B7/10;G02B7/28;(IPC1-7):G03B1/18 |
主分类号 |
G02B7/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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