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. 24, 2018
Filed:
Jan. 16, 2015
Cdgm Glass Co., Ltd, Chengdu, Sichuan, CN;
Bo Kuang, Chengdu, CN;
CDGM GLASS CO., LTD, Sichuan, CN;
Abstract
The invention provides an optical glass with rather low transition temperature, high transmittance, chemical stability and good devitrification resistance, wherein the refractive index is 1.60-1.65 and the Abbe number is 62-66. The optical glass comprises, by weight percentage, 30-50% of PO, 35-50% of BaO, 2-6% of BO, 0-5% of LaO, 0-5% of GdO, 0.1-5% of AlO, 0.1-5% of LiO, 2-10% of MgO, and 2-10% of CaO. According to the present invention, POis applied as the network generation body of glass so as to give high transmittance to the glass; a large amount of BaO is a key component for improving the transmittance of glass while improving the refractive index and weather durability of glass, and also the advantages of low transition temperature, good chemical stability and good devitrification resistance are provided.