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:
Jun. 05, 2018
Filed:
Mar. 24, 2017
Cdgm Glass Co., Ltd., Chengdu, Sichuan, CN;
Wei Yuan, Chengdu, CN;
CDGM GLASS CO., LTD., Chengdu, CN;
Abstract
The present invention provides a high refractivity and high dispersion optical glass and optical element with small relative partial dispersion (Pg,F), high transmittance and good chemical stability. For optical glass, with anion as O, wherein a cation thereof contains the following components by weight percentage: 12-25% of Si; 58-75% of Nb+W+Zr; 8-25% of Li+Na+K; 10% of Baor less. Based on the reasonable component design, the refractive index of the optical glass is 1.81-1.89, the Abbe number is 20-29, Pg,F is 0.5956-0.6199, and the corresponding wave length λis below 450 nm when the transmittance reaches up to 70%. Therefore, the optical glass provided by the present invention is applicable to high-quality optical elements.