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. 16, 2019
Filed:
Aug. 10, 2016
Cdgm Glass Co., Ltd, Chengdu, Sichuan, CN;
Wei Sun, Chengdu, CN;
CDGM GLASS CO., LTD, Sichuan, CN;
Abstract
A high refraction low dispersion optical glass having a refractive index of 1.86-1.92 and an Abbe number of 36-42. The components of the optical glass comprise, by weight percentage: BO: 1-30%; SiO: 0-20%; LaO: 25-55%; GdO: 5-40%; YO: 0-25%; YbO: 0-10%; TaO: 0-10%; NbO: 1-30%; TiO: 0-10%; ZrO: 0.5-20%; WO: 0-10%; ZnO: 0-15%; AlO: 0-10%; GeO: 0-10%; BiO: 0-10%. The optical glass does not contain PbO or F. A high refraction low dispersion optical glass having excellent light transmittance may be obtained by introducing suitable amounts of rare earth oxides having a high refraction low dispersion effect and optimizing the proportions of said components.