Retrofocus type wide-angle photographic lens system

Details Retrofocus type wide-angle photographic lens system Retrofocus type wide-angle photographic lens system

1975-11-06

1978-09-12

Clark, Conrad J.

G02B 1130

Patent

active

041133587

ABSTRACT:
A compact retrofocus type wide-angle photographic lens system wherein aberrations are favorably corrected and which comprises a first lens component having negative power, a second lens component having positive power, a third negative lens component, a fourth positive meniscus lens component and a fifth positive lens component, said wide-angle photographic lens system being so adapted as to meet the following conditions.

REFERENCES:
patent: 3731989 (1973-05-01), Shimizu
patent: 3936153 (1976-02-01), Ogwa

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