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:
May. 20, 2025
Filed:
Mar. 25, 2022
Applicant:
Olympus Corporation, Hachioji, JP;
Inventor:
Naoki Hasegawa, Chofu, JP;
Assignee:
OLYMPUS CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B 1/00 (2006.01); G02B 13/04 (2006.01); G02B 23/24 (2006.01); G02B 23/26 (2006.01);
U.S. Cl.
CPC ...
G02B 23/243 (2013.01); A61B 1/00096 (2013.01); G02B 13/04 (2013.01); G02B 23/26 (2013.01);
Abstract
The objective optical system includes a flat plate disposed closest to an object side and a plano-concave negative lens having a flat surface facing the object side. The flat plate is a transparent material harder than the plano-concave lens. The flat plate and the plano-concave lens having an equal diameter are bonded. The following Conditional Expressions (1) and (7) are satisfied:10≤φ1/1≤70 (1)7≤φ1/(1+2)≤9.71 (7)