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. 07, 2009
Filed:
Dec. 26, 2006
Syuji Matsumoto, Yokohama, JP;
Jun Sasai, Yokohama, JP;
Naoki Sugimoto, Yokohama, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
To provide an optical glass which has a high transmittance and a high refractive index and shows little decrease in the transmitted light intensity when continuously irradiated with a blue-violet laser diode light, and which is less prone to a higher melting temperature and exhibits chemical durability being not low. An optical glass consisting essentially of, as represented by mol %, from 35 to 54% of TeO, from 0 to 10% of GeO, from 5 to 30% of BO, from 0 to 15% of GaO, from 0 to 8% of BiO, from 3 to 20% of ZnO, from 0 to 10% of MgO+CaO+SrO+BaO, from 1 to 10% of YO+LaO+GdO, from 0 to 5% of TaO+NbO, from 0 to 1.8% of TiO, and from 0 to 6% of LiO+NaO+KO+RbO+CsO. A lens made of such an optical glass.