Patent ID: 11958769
Assignee: CDGM GLASS CO., LTD
Field: Materials, metallurgy (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. An optical glass, in terms of oxide mass percentages, the optical glass comprises: B2O3: 5-25%, La2O3: 25-45%, Gd2O3: 15-35%, Y2O3: 0-10%, Yb2O3: 0-10%, Nb2O5: 2-15%, SiO2: 0.5-15%, ZrO2: 1-15%, TiO2: 0.5-10% and WO3: 0-10%, a weight ratio of Nb2O5 to TiO2, i.e., Nb2O5/TiO2, is 2.17-8.5, and Ta2O5 is not comprised; a weight ratio of the La2O3 to Gd2O3, i.e., La2O3/Gd2O3, is 1.28-1.625.