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:
Jun. 26, 2018
Filed:
May. 03, 2017
Applicant:
Olympus Corporation, Hachioji-shi, Tokyo, JP;
Inventor:
Yuji Kamo, Hino, JP;
Assignee:
OLYMPUS CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 9/60 (2006.01); G02B 23/24 (2006.01); A61B 1/00 (2006.01); G02B 9/34 (2006.01);
U.S. Cl.
CPC ...
G02B 23/243 (2013.01); A61B 1/00163 (2013.01); G02B 9/34 (2013.01); G02B 9/60 (2013.01);
Abstract
An objective optical system for endoscope includes, in order from an object side: a first lens having a negative refractive power; a second meniscus lens having a positive refractive power with a convex surface thereof directed toward the object side; an aperture stop; a third lens having a biconvex shape, and a cemented lens having a positive refractive power as a whole, in which a fourth lens having a biconvex shape and a fifth lens having a negative refractive power are cemented.