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:
May. 14, 2019
Filed:
Apr. 06, 2016
Cdgm Glass Co., Ltd, Chengdu, Sichuan, CN;
Wei Sun, Chengdu, CN;
CDGM GLASS CO., LTD., Sichuan, CN;
Abstract
An optical glass with high refractive index and low dispersion, having refractive index nd of 1.78-1.95, Abbe number νd of 32-50, and contains no GeO, so it is not easily devitrified. An optical glass, represented by cation %, including: 1-20% of Si; 25-60% of B; 10-40% of La; 0-15% of Y; 0-20% of Nb; 0-15% of Ti; 0-10% of Ta; 0-5% of W; 0-15% of Zr; 0-10% of Zn; 0-10% of Bi. An optical glass with excellent transmittance, an optical glass preform and an optical element formed by the above optical glass. The optical element made by the above optical glass and the above glass preform or optical element blank, such as lens, can be used for optical systems.