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. 09, 2019
Filed:
Aug. 14, 2017
Cdgm Glass Co., Ltd, Chengdu, Sichuan, CN;
Bo Kuang, Chengdu, CN;
CDGM GLASS CO., LTD, Chengdu, CN;
Abstract
A high-refraction low-dispersion optical glass with refractive index of 1.77-1.85 and Abbe number of 40-48, includes the following components by mole percentage: 5-25% of SiO, 15-45% of BO, 5-25% of LaO, 1-20% of GdO, 0-10% of YO, 0-8% of TiO, 0-8% of TaO, more than 0 but less than or equal to 8% of NbO, more than 0 but less than or equal to 15% of ZrO, 18-40% of ZnO and 0.28-1.2 of SiO/BO. The invention reduces the content of TaOand optimizes the cost of raw materials. Through rational composition design, the optical glass of the invention is conducive to precision molding while achieving the required optical constant, with excellent chemical stability. A glass preform and an optical element made of the optical glass are also disclosed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile