Wide-angle photographic lens system with a short overall length

Details Wide-angle photographic lens system with a short overall length Wide-angle photographic lens system with a short overall length

1975-05-13

1976-12-21

Corbin, John K.

350228, G02B 912, G02B 1318

Patent

active

039985270

ABSTRACT:
A wide-angle photographic lens system with a short overall length comprising three lens components of four lenses, the surface on the object side of the third lens component being formed as an aspherical surface expressed by the following formulas: ##EQU1##

REFERENCES:
patent: 2833181 (1958-05-01), Bertele

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