发明名称 |
Viewing system for reflex camera |
摘要 |
A viewfinder system for a single lens reflex camera where the field lens of the system is positionable in accordance with the distance of the objective lens exit pupil from the focal plane and eyepiece lenses are positionable in accordance with the field lens to maintain uniform viewfinder brightness without any essential change in image magnification.
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申请公布号 |
US4047207(A) |
申请公布日期 |
1977.09.06 |
申请号 |
US19760648779 |
申请日期 |
1976.01.13 |
申请人 |
OPTIGON RESEARCH & DEVELOPMENT CORPORATION |
发明人 |
ALTMAN, RICHARD M.;MCLAUGHLIN, THOMAS D. |
分类号 |
G03B13/10;G02B25/00;G03B13/26;G03B19/12;(IPC1-7):G03B13/12 |
主分类号 |
G03B13/10 |
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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