Optical glass, glass preform, optical element and optical instrument

• Main Author: KUANG BO
• Format: Patent
• Language: Chinese; English
• Published: 08.03.2024
• 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, which comprises the following components in percentage by weight: 1 to 15 percent of SiO2; 5%-20% of B2O3; 25 to 50 percent of La2O3; zrO2: 1%-12%; 5%-20% of TiO2; and RO: 6-35%, wherein RO is the total content of MgO, CaO, SrO and BaO. Through reasonable component design, the optical glass obtained by the invention has expected refractive index and Abbe number and low density, and meets the lightweight application of optical instruments. 本发明提供一种光学玻璃，其组分以重量百分比表示，含有：SiO2：1～15％；B2O3：5～20％；La2O3：25～50％；ZrO2：1～12％；TiO2：5～20％；RO：6～35％，所述RO为MgO、CaO、SrO、BaO的合计含量。通过合理的组分设计，本发明获得的光学玻璃在具有期望的折射率和阿贝数的同时，具有较低的密度，满足光学仪器轻量化应用。