High-refraction high-dispersion optical glass

• Main Author: KUANG BO
• Format: Patent
• Language: Chinese; English
• Published: 08.11.2022
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; METALLURGY; MINERAL OR SLAG WOOL; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

The invention provides optical glass with high refraction and high dispersion, which comprises the following components in percentage by weight: 8-28% of SiO2 + B2O3; the content of La2O3, Y2O3 and Gd2O3 is 46 to 70 percent; zrO2: 1%-12%; 4 to 20 percent of Nb2O5; and 4 to 18% of TiO2, wherein the ratio of TiO2 to Y2O3 is 0.3 to 4.0. Through reasonable component design, the optical glass provided by the invention has excellent weather resistance and abrasion resistance while having expected refractive index and dispersion. 本发明提供一种高折射高色散光学玻璃，其组分以重量百分比表示，含有：SiO2+B2O3：8～28％；La2O3+Y2O3+Gd2O3：46～70％；ZrO2：1～12％；Nb2O5：4～20％；TiO2：4～18％，其中TiO2/Y2O3为0.3～4.0。通过合理的组分设计，本发明的光学玻璃在具有期望的折射率和色散的同时，还具有优异的耐候性和磨耗度。