High refractive index glass
AssigneeNippon Electric Glass Co., Ltd.
InventorsAtsushi Mushiake, Takashi Murata, Tomoki Yanase
Life of this patent
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Abstract
Provided is a high refractive index glass, comprising, as a glass composition in terms of mass %, 0 to 10% of B2O2, 0.001 to 35% of SrO, 0.001 to 30% of ZrO2+TiO2, and 0 to 10% of La2O2+Nb2O5, having a mass ratio of BaO/SrO of 0 to 40 and a mass ratio of SiO2/SrO of 0.1 to 40, and having a refractive index nd of 1.55 to 2.3.
Claims6
A high refractive index glass, comprising, as a glass composition in terms of mass %, 35 to 50% of SiO2, 0 to 1.5% of Li2O+Na2O+K2O, 0.1 to 35% of SrO, 0 to 35% of BaO, 0.001 to 25% of TiO2, 0 to 3% of B2O3, and 0 to 9% of La2O3+Nb2O5+Gd2O3, and having a refractive index nd of 1.55 to 2.3.
Dependencies are inferred from the claim text.