Wide angle lens

Details Wide angle lens Wide angle lens

1976-04-23

1977-07-05

Corbin, John K.

G02B 960

Patent

active

040336751

ABSTRACT:
In a wide angle lens system, there are arranged, in succession from the object side toward the image side, a divergent first lens group having its surface of smaller curvature facing the object side, a divergent, meniscus, second lens group having its convex surface facing the object side, the first and second lens groups defining therebetween a divergent, meniscus-shaped air chamber having its convex surface facing the object side, a convergent, meniscus, third lens group consisting of a plurality of lenses, a convergent, meniscus, fourth lens group consisting of a plurality of lenses, and a divergent, meniscus, fifth lens group having its convex surface facing the image side.

REFERENCES:
patent: 2721499 (1955-10-01), Bertele

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