The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 27, 1979
Filed:
Sep. 12, 1977
Applicant:
Inventor:
Tsutomu Tojyo, Hachiouji, JP;
Assignee:
Olympus Optical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
3501 / ; 350220 ;
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.