Adapter lens system for use with photographic cameras

Details Adapter lens system for use with photographic cameras Adapter lens system for use with photographic cameras

1983-08-15

1985-06-11

Corbin, John K.

350475, G02B 916

Patent

active

045224714

ABSTRACT:
A triplet type of adapter lens system for use with photographic cameras comprising a first positive lens element, a second biconcave lens element, a third positive lens element and a stop arranged on the front side of said first lens element, said adapter lens system having a short total length, a long back focal length and favorable corrected aberrations.

REFERENCES:
patent: 2388869 (1945-11-01), Reiss
patent: 2720814 (1955-10-01), Sandback
patent: 3443863 (1969-05-01), Ruben
patent: 3649103 (1972-03-01), Kamimura
patent: 3910685 (1975-10-01), DeJager
patent: 3912379 (1975-10-01), DeJager

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