发明名称 |
Finder optical system |
摘要 |
An object of the invention is to provide a compact yet high-performance finder optical system comprising an image inversion optical subsystem having a decentered reflecting surface, which enables a bright, distortion-free image to be observed. This object is achieved by locating a rotationally asymmetric surface in the image inversion optical subsystem forming part of the finder optical system.
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申请公布号 |
US6178052(B1) |
申请公布日期 |
2001.01.23 |
申请号 |
US19970998481 |
申请日期 |
1997.12.29 |
申请人 |
OLYMPUS OPTICAL CO., LTD. |
发明人 |
AOKI NORIHIKO;TOGINO TAKAYOSHI |
分类号 |
G03B13/06;G02B5/04;G02B13/18;G02B17/08;G02B23/14;(IPC1-7):G02B17/00;G02B27/14 |
主分类号 |
G03B13/06 |
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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