Telephoto lens system

Details Telephoto lens system Telephoto lens system

1980-05-27

1982-07-06

Corbin, John K.

G02B 960, G02B 1302

Patent

active

043380018

ABSTRACT:
A telephoto lens system has a convergent forward group and a divergent rearward group. The forward group includes a first lens which is a biconvex lens having its surface of greater curvature facing the object side, a second lens which is a biconcave lens having its surface of greater curvature facing the object side, and a third lens which is a positive meniscus lens having its convex surface facing the object side. The rearward group includes a fourth lens which is a concave lens having its surface of greater curvature facing the object side, and a fifth lens which is a biconvex lens. The lens system satisfies predetermined conditions.

REFERENCES:
patent: 3502394 (1970-03-01), Kobayashi
patent: 3868174 (1975-02-01), Yakota
patent: 3966307 (1976-06-01), Tojyo

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