Gauss type lens system

Patent

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Details

G01B 942

Patent

active

042919525

ABSTRACT:
A Gauss type lens system comprising a first, second, third and fourth lens components, the first lens component being a positive meniscus lens, the second lens component being a cemented doublet consisting of a positive lens and negative lens, the third lens component being a cemented doublet consisting of a negative lens and positive lens, the fourth lens component being a biconvex lens, the Gauss type lens system having the aperture ratio of 1.8 and field angle of 46.degree. and being made low in price by using high refractive-index high dispersion glass materials for many of lenses.

REFERENCES:
patent: 3485549 (1969-12-01), Woltche
patent: 4123144 (1978-10-01), Mandler et al.

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