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:
Nov. 01, 2016
Filed:
Jul. 18, 2013
Applicant:
Hoya Corporation, Tokyo, JP;
Inventors:
Yoshitake Tanno, Akishima, JP;
Yuki Shiota, Akishima, JP;
Assignee:
HOYA CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C 3/247 (2006.01); G02B 1/02 (2006.01);
U.S. Cl.
CPC ...
C03C 3/247 (2013.01); G02B 1/02 (2013.01);
Abstract
Provided are an optical fluorophosphate glass having excellent optical characteristics and also excellent processability, a glass material for press molding and an optical element each including the glass, and methods for producing the glass material and the optical element. The optical glass includes Pas a cationic component and Oand Fas anionic components, wherein the optical glass has a content of Fof 40 anionic % or less, an abrasion factor Fof 420 or higher, and a fragility index value B of 4500 μmor lower.