发明名称 |
Eyepiece system |
摘要 |
An eyepiece system for use with binoculars, etc. which comprises, in order from a side of an observer's eye, a first convex lens element having a strongly convex surface on a side of an objective lens, and a cemented doublet lens component which consists of a second biconvex lens element and a third negative or negative meniscus lens element. This eyepiece system is configured to have a wide apparent field angle and favorably corrected aberrations by selecting an adequate value for a distance as measured from a front focal point of the eyepiece system to a vertex on a surface of the first lens element which is located on the side of the observer's eye.
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申请公布号 |
US5764418(A) |
申请公布日期 |
1998.06.09 |
申请号 |
US19960633515 |
申请日期 |
1996.04.17 |
申请人 |
OLYMPUS OPTICAL CO., LTD. |
发明人 |
SATO, TOMOKO;TANAKA, KAZUYUKI |
分类号 |
G02B25/00;(IPC1-7):G02B25/00;G02B13/18 |
主分类号 |
G02B25/00 |
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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