发明名称 |
Finder optical system with low-hygroscopic organic material |
摘要 |
A finder optical system including an objective system, an image erecting system for erecting an object image formed by the objective system, and an eyepiece system for observing the object image. These systems are constructed of low-hygroscopic organic materials. Thus, the finder optical system can prevent transient variations of optical properties caused by hygroscopicity.
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申请公布号 |
US5581400(A) |
申请公布日期 |
1996.12.03 |
申请号 |
US19940335352 |
申请日期 |
1994.11.03 |
申请人 |
OLYMPUS OPTICAL CO., LTD. |
发明人 |
TAKASE, HIROSHI;KANAMORI, TATSURU;IMAIZUMI, MASAKI;MOROOKA, MASARU |
分类号 |
G03B13/06;G02B23/14;(IPC1-7):G03B13/08;G02B3/00;G02B23/00 |
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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