Compact photographic objective

Details Compact photographic objective Compact photographic objective

1980-12-22

1983-01-18

Corbin, John K.

350469, G02B 304, G02B 934

Patent

active

043689566

ABSTRACT:
The objective disclosed includes, from front to rear, a positive meniscus lens of forward convexity, a negative lens, a positive lens, and a negative meniscus lens having an aspheric front surface concave toward the front, and fulfills the following requirements: ##EQU1## where f is the focal length of the entire system;

REFERENCES:
patent: 2446402 (1948-08-01), Aklin
patent: 3951523 (1976-04-01), Nishimoto
patent: 4204747 (1980-05-01), Imai

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