Microscope objective

Details Microscope objective Microscope objective

1977-09-12

1979-03-27

Clark, Conrad J.

350220, G02B 934, G02B 2102

Patent

active

041463048

ABSTRACT:
A microscope objective comprising a first, second, third and fourth lens components, in which the first lens component is a biconcave lens, the second lens component is a biconvex lens, the third lens component is a positive cemented meniscus doublet, the fourth lens component is a positive lens, and satisfying the following conditions for which N. A. is large, working distance is long and flatness of image is favorable.

REFERENCES:
patent: 3507554 (1970-04-01), Benford
patent: 3598473 (1971-08-01), Shoemaker

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