Patent ID: 11958770
Assignee: SCHOTT AG
Field: Materials, metallurgy (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A glass, comprising the following components in % by weight:, Proportion

Component
(% by weight)

SiO2
 2-10

B2O3
 2-10

La2O3
40-55

Gd2O3
 4-11

Nb2O5
 6-14

TiO2
  8-18.5

ZrO2
 5-11;

wherein the glass has a refractive index nd of at least 2.02, a sum of the proportions of La2O3, Nb2O5, TiO2 and ZrO2 is at least 76.5% by weight, and a weight ratio of a sum of the proportions of La2O3, Nb2O5 and ZrO2 to the proportion of TiO2 is at least 3.85:1.