Wide-angle photographic camera lens system

Details Wide-angle photographic camera lens system Wide-angle photographic camera lens system

1980-03-30

1980-09-09

Clark, Conrad J.

G02B 1304

Patent

active

042214670

ABSTRACT:
A wide-angle photographic camera lens system having a very short total length of 2.75 f and a back focal length of 1.33 f comprising a first positive meniscus lens, a second negative meniscus lens, a third positive thick lens, a fourth negative lens, a fifth positive meniscus lens and a sixth positive lens.

REFERENCES:
patent: 3506339 (1970-04-01), Kazamaki
patent: 3955883 (1976-05-01), Sugiyama
patent: 4008952 (1977-02-01), Nakagawa

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