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:
Feb. 28, 2017
Filed:
Sep. 24, 2013
Cdgm Glass Co., Ltd., Chengdu, Sichuan, CN;
Bo Kuang, Sichuan, CN;
CDGM GLASS CO., LTD., Chengdu, CN;
Abstract
The invention provides a low-cost high-precision molding optical glass, with density below 4.54 g/cm, refractive index ranging from 1.85 to 1.95, Abbe number ranging from 25 to 35 and transition temperature lower than 610° C. Expensive TaOis not added in the invention, so the production cost is saved, and resource saving is realized; the combination of BOand LaOeffectively improves the devitrification resistance and the chemical stability of glass; the combination of WOand TiOallows the staining degree of the optical glass to be excellent; and the combination of GdOand LaOeffectively improves the devitrification resistance of the glass.