Patent ID: 11952311
Assignee: CDGM GLASS CO., LTD
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  G | IPC C  G

Claim 0:
1. An optical glass, in terms of oxide mass percentages, the optical glass comprises: B2O3: 5-25%, SiO2: 0.5-15%, ZrO2: 1-15%, TiO2: 0.5-10%, and the sum of La2O3, Gd2O3, Y2O3 and Yb2O3 is 63.6-75%, and Nb2O5 is not comprised, a weight ratio of La2O3 to Gd2O3, i.e., La2O3/Gd2O3, is 1.28-1.625.