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:
Dec. 09, 2025
Filed:
Dec. 07, 2022
Applicant:
Evident Corporation, Tatsuno-machi, JP;
Inventors:
Kenichiro Abe, Tatsuno-machi, JP;
Shinya Sakata, Tatsuno-machi, JP;
Assignee:
Evident Corporation, Nagano, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 9/12 (2006.01); G02B 9/14 (2006.01); G02B 9/22 (2006.01); G02B 21/02 (2006.01);
U.S. Cl.
CPC ...
G02B 9/12 (2013.01); G02B 9/14 (2013.01); G02B 9/22 (2013.01); G02B 21/02 (2013.01);
Abstract
An objective includes a first lens group having positive power, a second lens group including a pair of lens components having concave surfaces facing each other, and a third lens group having positive power, and the pair of lens components is cemented lenses, and the following conditional expression is satisfied.0.20≤2/≤0.5 (1)