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:
Jan. 05, 2021
Filed:
Nov. 16, 2018
Applicant:
Olympus Corporation, Hachioji, JP;
Inventors:
Yuji Kamo, Hino, JP;
Yoshifumi Tsuji, Hachioji, JP;
Assignee:
OLYMPUS CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 23/24 (2006.01); G02B 13/04 (2006.01); A61B 1/00 (2006.01);
U.S. Cl.
CPC ...
G02B 13/04 (2013.01); A61B 1/0011 (2013.01); A61B 1/00096 (2013.01); A61B 1/00188 (2013.01); A61B 1/00197 (2013.01); G02B 23/243 (2013.01); A61B 1/00186 (2013.01);
Abstract
An objective optical system for an 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 and having a convex surface directed toward an image side, an aperture stop, a third lens having a positive refractive power, and a cemented lens of a fourth lens having a positive refractive power and a fifth lens having a negative refractive power.