| 摘要 |
The present invention provides glass suitable as an organic EL lighting substrate and having a high refractive index (nd) while also having the viscosity necessary to make thin-plate molding possible. This glass contains, in mass% calculated by oxide content, an SiO2 component in the amount of 5-50%, an La2O3 component in the amount of 4-35%, a TiO2 component in the amount of 3-30%, a ZrO2 component in the amount of 0-20%, and a BaO component in the amount of 5-50%, wherein the mass ratio ((La2O3+BaO)/SiO2) of the total content of the La2O3 and BaO components to the SiO2 component content is 1.1-4.0, inclusive. |
