| 摘要 |
An optical glass for precision molding. The density of the optical glass is below 4.54g/cm3, the refractive index thereof is 1.85-1.95, and the transition temperature thereof is below 610°C. No expensive Ta2O5 is added into the optical glass, thereby reducing production costs and saving resources; by means of the combination of B2O3 and La2O3, the devitrification resistance of glass can be effectively improved, thereby improving the chemical stability of the glass; by means of the combination of WO3 and TiO2, the degree of colouration of glass becomes excellent; and by means of the combination of Gd2O3 and La2O3, the devitrification resistance of glass can be effectively improved. |
