Compact type retrofocus lens

Details Compact type retrofocus lens Compact type retrofocus lens

1979-12-11

1981-09-29

Corbin, John K.

G02B 1304

Patent

active

042919517

ABSTRACT:
Disclosed is an inverted telephoto lens consisting of a divergent lens group, a convergent lens group, a diaphragm, a positive doublet lens, a bi-concave lens and two positive meniscus lenses in sequence from the object side. The positive doublet lens consists of a negative lens and a bi-convex lens cemented to each other, while the divergent lens consists of a positive lens, a negative meniscus lens, a positive lens and a negative lens whose rear lens surface is concave in sequence.

REFERENCES:
patent: 4188092 (1980-02-01), Momiyama
patent: 4206973 (1980-06-01), Ikemori

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