发明名称 |
Focusing optical system for single-lens reflex |
摘要 |
A focusing optical system for single-lens reflex cameras comprising an auxiliary lens arranged in the vicinity of the focusing surface of a focusing glass and a detector element arranged in the vicinity of a penta-prism, and so adapted as to detect the focusing point by transferring a portion of the light from an object to said detector element.
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申请公布号 |
US4229087(A) |
申请公布日期 |
1980.10.21 |
申请号 |
US19790007591 |
申请日期 |
1979.01.29 |
申请人 |
OLYMPUS OPTICAL CO., LTD. |
发明人 |
KIMURA, TADASHI |
分类号 |
G03B7/099;G02B7/28;G03B13/02;G03B13/24;G03B13/36;G03B19/12;(IPC1-7):G03B13/16 |
主分类号 |
G03B7/099 |
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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