Gauss type photographic lens

Details Gauss type photographic lens Gauss type photographic lens

1979-01-30

1980-11-18

Corbin, John K.

G02B 960

Patent

active

042342422

ABSTRACT:
A Gauss type photographic lens comprises a first convergent lens group G1 and a second convergent lens group G2. The first convergent lens group G1 comprises, in the order from the object side, a positive lens component L1, a positive meniscus lens component L2 having its convex surface facing the object side, and a negative meniscus lens component L3 having its convex surface facing the object side, and the second convergent lens group G2 comprises, in the order from the object side, a meniscus lens component L4 consisting of a negative lens and a positive lens cemented together and having its concave surface facing the object side, and a positive lens component L5.
Such a lens arrangement is well-known and to maintain the lens construction more compact and better correct the various aberrations, it is necessary that conditions be satisfied.

REFERENCES:
patent: 3738736 (1973-06-01), Shimizu
patent: 4131335 (1978-12-01), Kimura
patent: 4139265 (1979-02-01), Matsui

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