Optical glass with negative anomalous dispersion

• Main Author: KUANG BO
• Format: Patent
• Language: Chinese; English
• Published: 09.09.2022
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; METALLURGY; MINERAL OR SLAG WOOL; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

The invention provides optical glass with negative anomalous dispersion, which comprises the following components in percentage by weight: 20-45% of SiO2; 20 to 40 percent of B2O3; 5 to 25 percent of Nb2O5; zrO2: 2%-20%; 1 to 15 percent of Na2O; and 0-10% of BaO, wherein the ratio of (Nb2O5 + Na2O + BaO)/B2O3 is 0.5 to 1.5. Through reasonable component design, the optical glass obtained by the invention has negative anomalous dispersion and lower thermal expansion coefficient, and meets the application of high-end photoelectric products. 本发明提供一种具有负向反常色散的光学玻璃，其组分以重量百分比表示，含有：SiO2：20～45％；B2O3：20～40％；Nb2O5：5～25％；ZrO2：2～20％；Na2O：1～15％；BaO：0～10％，其中(Nb2O5+Na2O+BaO)/B2O3为0.5～1.5。通过合理的组分设计，本发明获得的光学玻璃具有负向的反常色散，以及较低的热膨胀系数，满足高端光电产品的应用。