发明名称 |
Apparatus for selectively positioning a correcting optical element in a camera. |
摘要 |
<p>The invention relates to an apparatus for a camera for selectively positioning a correcting optical element (61) used during macro-photography in front of the light receiver (72) of a distance measuring device. The camera has a generally cylindrical rotatable cam ring (22) as a part of its lens. The cam ring (22) has a plurality of threads (69) on an exterior cam ring surface, said threads (69) comprising means for selectively engaging said optical element (61) during rotation of said cam ring (22).</p> |
申请公布号 |
EP0609912(A2) |
申请公布日期 |
1994.08.10 |
申请号 |
EP19940104979 |
申请日期 |
1989.06.02 |
申请人 |
ASAHI KOGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
NOMURA, HIROSHI, C/O ASAHI KOGAKU KOGYO K.K. |
分类号 |
G02B7/10;G02B15/14;G03B17/04;(IPC1-7):G02B7/10;G03B17/00 |
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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