发明名称 |
Focusing detecting device with coaxial source and detector |
摘要 |
The focusing detecting device determines whether or not the optical image of an object to be photographed is in a focusing state in which the image is clearly formed on a predetermined image forming surface through a photographing or image forming optical system. The device can be used with a dark optical system.
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申请公布号 |
US4538062(A) |
申请公布日期 |
1985.08.27 |
申请号 |
US19820442087 |
申请日期 |
1982.11.16 |
申请人 |
OLYMPUS OPTICAL CO., LTD. |
发明人 |
SHISHIDO, YOSHIO |
分类号 |
G02B7/32;(IPC1-7):G01J1/20 |
主分类号 |
G02B7/32 |
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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