Wide angle lens

Details Wide angle lens Wide angle lens

1977-10-26

1979-12-04

Sacher, Paul A.

350176, 350177, G02B 958

Patent

active

041769155

ABSTRACT:
A wide angle lens comprises four lens components, which are, in order from the object side, a divergent first element consisting of a negative meniscus lens having its convex surface facing the object side, a compositely convergent second component consisting of a plurality of lens elements including a biconvex lens element on the object side thereof, the center thickness of the biconvex lens of the second component being greater than the separation between the first and the second components, a compositely convergent third components consisting of a plurality of lens elements, and a divergent fourth components consisting of a negative meniscus lens element having its convex surface facing the image side, the separation between the fourth and the third components being less than that between the first and the second components.

REFERENCES:
patent: 4033675 (1977-07-01), Terasawa et al.

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