Retrofocus type wide angle lens system

Details Retrofocus type wide angle lens system Retrofocus type wide angle lens system

1976-10-13

1979-03-20

Sacher, Paul A.

G02B 964

Patent

active

041451171

ABSTRACT:
A retrofocus type wide-angle lens system comprising a first positive meniscus lens, a second negative meniscus lens, a third negative meniscus lens, a fourth biconvex lens, a fifth biconcave lens, a sixth positive meniscus lens and a seventh biconvex lens, said lens system having a long back focal length, short total length and being so designed as to favorably correct various aberrations.

REFERENCES:
patent: 3975091 (1976-08-01), Takahashi

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