1978-03-02
1980-07-15
Sacher, Paul A.
G02B 960
Patent
active
042125170
ABSTRACT:
A photographic lens system of modified Gauss type comprising a first, second, third fourth and fifth lens components in which the first and second lens components are positive meniscus lenses arranged convex toward the object side, the third lens component is a negative meniscus lens arranged convex toward the object side, the fourth lens component is a negative cemented meniscus doublet comprising a biconcave lens and biconvex lens, the fifth lens component is a biconvex lens, the photographic lens system being compact and light in weight and having a long back focal length and aberrations corrected favorably.
REFERENCES:
patent: 2735340 (1956-02-01), Aklin
Olympus Optical Co,. Ltd.
Sacher Paul A.
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