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:
Apr. 05, 2016
Filed:
Feb. 25, 2013
Applicants:
Tomoaki Negishi, Hino, JP;
Toshiyuki Nishikawa, Akishima, JP;
Inventors:
Tomoaki Negishi, Hino, JP;
Toshiyuki Nishikawa, Akishima, JP;
Assignee:
HOYA CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C 3/068 (2006.01); C03B 11/00 (2006.01); C03B 11/08 (2006.01); G02B 1/02 (2006.01); G02B 3/00 (2006.01); C03B 40/02 (2006.01); C03B 5/43 (2006.01); C03B 17/04 (2006.01); C03B 17/06 (2006.01);
U.S. Cl.
CPC ...
C03C 3/068 (2013.01); C03B 5/43 (2013.01); C03B 11/08 (2013.01); C03B 17/04 (2013.01); C03B 17/061 (2013.01); C03B 40/02 (2013.01); G02B 1/02 (2013.01); G02B 3/00 (2013.01); C03B 2215/46 (2013.01);
Abstract
An aspect of the present invention relates to optical glass, which is oxide glass, having a refractive index nd ranging from 1.95 to 2.50 and an Abbé number νd ranging from 18 to 40, including essential components in the form of Si, B, La, Ti, Nb, and at least one from among Gd, Y, and Yb, including, denoted as cation %, 1 to 30% of Si, 1 to 50% of B, wherein a total of Siand Branges from 5 to 55%, a total of 11 to 70% of La, Gd, Y, and Yb, with 10 to 50% of La, a total of 23 to 70% of Ti, Nb, Ta, and W, with equal to or greater than 1% of Nband greater than 22% of Ti.