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:
Oct. 19, 2021
Filed:
May. 01, 2019
Applicant:
Olympus Corporation, Hachioji, JP;
Inventor:
Hideyasu Takato, Hino, JP;
Assignee:
OLYMPUS CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 23/24 (2006.01); G02B 9/12 (2006.01); G02B 13/04 (2006.01);
U.S. Cl.
CPC ...
G02B 23/243 (2013.01); G02B 9/12 (2013.01); G02B 13/04 (2013.01);
Abstract
An objective optical system consists of in order from an object side to an image side, a first group having a positive refractive power, an aperture stop, a second group having negative refractive power, and a third group having a positive refractive power. Focusing is carried out by moving the second group. The objective optical system satisfies the following conditional expression (1').−16.6<2/FL<−11  (1′)