Patent
1979-04-02
1981-06-02
Bauer, Edward S.
350 45, G03B 1302
Patent
active
042708370
ABSTRACT:
For use in an afocal, periscopic viewfinder system of the type having four spaced apart elements, all equi-convex with aspherized surfaces and identical in pairs, and a central stop, there is provided a novel central reimaging system that is structured to increase the overall length of the viewfinder system without substantially changing the other characteristics or optical performance of the viewfinder system.
REFERENCES:
patent: 3583785 (1971-06-01), Boardman
patent: 3722979 (1973-03-01), Mikami
patent: 3792650 (1974-02-01), Mueller et al.
Smith, Modern Optical Engineering, New York, McGraw-Hill, pp. 212-213, 1966.
Bauer Edward S.
Caufield Francis J.
Koren Matthew W.
Polaroid Corporation
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