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:
Sep. 04, 1979
Filed:
Jan. 24, 1978
Applicant:
Inventor:
Tsutomu Tojyo, Hachiouji, JP;
Assignee:
Olympus Optical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
3501 / ; 350222 ;
Abstract
An objective lens system for microscopes having a large N.A. and a long working distance comprising a first positive lens component, a second single or cemented meniscus lens component, a third negative cemented meniscus lens component and a fourth positive lens component. Said objective lens system is so designed as to satisfy the conditions enumerated hereunder: