Optical glass and glass prefabricated member, optical element and optical instrument made of optical glass

• Main Author: KUANG BO
• Format: Patent
• Language: Chinese; English
• Published: 30.08.2022
• 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 as well as a glass prefabricated part, an optical element and an optical instrument which are made of the optical glass. The optical glass comprises the following components by mole percent: 1-10% of Si < 4 + >, 25-40% of B < 3 + >, 20-40% of La < 3 + >, 0-15% of Gd < 3 + >, more than 0 and less than or equal to 10% of Y < 3 + >, 1-10% of Zr < 4 + >, 1-10% of Nb < 5 + >, 8-25% of Ti < 4 + > and 0-10% of W < 6 + >, and (Nb < 5 + > + Ti < 4 + > + W < 6 + >)/Y < 3 + > is 26-46. The invention has the advantages of scientific design, reasonable formula, excellent chemical stability, high refractive index and low production cost. 本发明提供了一种光学玻璃及由该光学玻璃制成的玻璃预制件、光学元件和光学仪器。本发明的光学玻璃的组成按摩尔％表示，含有Si4+：1-10％、B3+：25-40％、La3+：20-40％、Gd3+：0-15％、Y3+：大于0小于等于10％、Zr4+：1-10％、Nb5+：1-10％、Ti4+：8-25％、W6+：0-10％，其中(Nb5++Ti4++W6+)/Y3+为26-46。本发明设计科学，配方合理，具有优异的化学稳定性，其折射率高，生产成本低。