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:
Aug. 21, 2012
Filed:
Oct. 30, 2009
Applicant:
Minoru Onoda, Osaka, JP;
Inventor:
Minoru Onoda, Osaka, JP;
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C 3/155 (2006.01); C03C 3/068 (2006.01); C03C 3/066 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical glass composition contains, in % by mole, 0% or more and 25.0% or less of SiO, 20.0% or more and 40.0% or less of BO, 0% or more and 5.0% or less of LiO, 3.0% or more and 15.0% or less of ZnO, 0% or more and 10.0% or less of ZrO, 2.0% or more and 7.0% or less of TaO, 6.0% or more and 25.0% or less of LaO, 5.0% or more and 22.0% or less of GdO, 66.5% or less of LaO+GdO+BOand 26.0% or more of LaO+GdO, and has nd of 1.83 or higher and 1.86 or lower, vd of 43 or higher and 46 or lower and a liquidus temperature of 1300° C. or lower, and a preform and an optical element are formed from the optical glass composition.