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. 12, 2023
Filed:
Sep. 21, 2020
Applicant:
Olympus Corporation, Hachioji, JP;
Inventor:
Nobuhiko Sone, Hino, JP;
Assignee:
OLYMPUS CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B 1/00 (2006.01); G02B 15/14 (2006.01); G02B 23/24 (2006.01);
U.S. Cl.
CPC ...
A61B 1/00188 (2013.01); A61B 1/00096 (2013.01); G02B 15/143507 (2019.08); G02B 23/2438 (2013.01);
Abstract
An objective optical system includes, in order from an object: a first lens group having a negative refractive power, a second lens group having a positive refractive power, and a third lens group having a positive refractive power. The second lens group includes an aperture stop and moves at a time of changing magnification.