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:
Oct. 08, 2019
Filed:
Sep. 27, 2017
Applicant:
Cdgm Glass Co., Ltd., Chengdu, CN;
Inventor:
Wei Sun, Chengdu, CN;
Assignee:
CDGM GLASS CO., LTD., Chengdu, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C 3/068 (2006.01);
U.S. Cl.
CPC ...
C03C 3/068 (2013.01);
Abstract
The present invention discloses an optical glass, and more particularly, relates to an optical glass for precision press molding which has a refractive index of 1.80 to 1.90 and an Abbe number of 30 to 40, as well as a glass preform, an optical element and an optical instrument formed from the optical glass. The optical glass of the present invention combines specific components and specific contents, thereby giving an optical glass for precision press molding.