Wide-angle photograhic objective

Details Wide-angle photograhic objective Wide-angle photograhic objective

1977-08-19

1979-08-07

Sacher, Paul A.

350176, G02B 964

Patent

active

041636031

ABSTRACT:
A wide-angle photographic objective comprises ten (10) components. In the order from the object side, the first component is a positive meniscus lens having its convex surface facing the object side, the second component is a negative meniscus lens having its convex surface facing the object side, the third component is a negative meniscus lens having its convex surface facing the object side, the fourth component is a positive lens, the fifth component is a negative meniscus lens having its convex surface facing the object side, the sixth component is a positive lens, the seventh component is a positive lens, the eighth component is a biconcave negative lens comprising a doublet, the ninth component is a positive meniscus lens having its convex surface facing the image side, and the tenth component is a positive lens.

REFERENCES:
patent: 3877795 (1975-04-01), Yamashita

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