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:
Jun. 09, 2026
Filed:
Dec. 02, 2021
Applicant:
Nikon Corporation, Tokyo, JP;
Inventor:
Kohei Yoshimoto, Tokyo, JP;
Assignee:
NIKON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C 3/062 (2006.01);
U.S. Cl.
CPC ...
C03C 3/062 (2013.01);
Abstract
Provided is an optical glass including: by mol % of a cation, 5% to 20% of a content rate of Si; 18% to 35% of a content rate of Al; 15% to 50% of a total content rate of La, Y, and Gd; 2% to 15% of a content rate of Zr; and 8% to 30% of a content rate of Ta, wherein a ratio of the content rate of Alto a total content rate of Siand Al(Al/(Si+Al)) is from 0.5 to 0.85.