Search International and National Patent Collections

1. (WO2017152657) OPTICAL GLASS AND OPTICAL ELEMENT

Pub. No.:    WO/2017/152657    International Application No.:    PCT/CN2016/106787
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Wed Nov 23 00:59:59 CET 2016
IPC: C03C 3/066
Applicants: CDGM GLASS CO., LTD
成都光明光电股份有限公司
Inventors: KUANG, Bo
匡波
Title: OPTICAL GLASS AND OPTICAL ELEMENT
Abstract:
An optical glass having a high refractive index and a low dispersion with a refractive index of 1.76-1.80 and an Abbe number of 47-51. The glass has reduced Ta2O5 content in the constituents and has excellent transmittance. The glass comprises the following constituents in mole percentage: B2O3: 40-65%; La2O3: 6-21%; Gd2O3: 1-15%; ZrO2: greater than 6.5% but less than or equal to 15%; and ZnO: 10-28%, wherein SnO2 is not introduced to the constituents of the glass.