Optical glass, optical element and optical instrument

The invention provides optical glass, which comprises the following components in percentage by weight: 1 to 12 percent of SiO2; 3 to 18 percent of B2O3; the content of La2O3 is 45 to 65 percent; 1 to 13 percent of Y2O3; 1 to 13 percent of ZrO2; 3 to 18 percent of Nb2O5; 5-20% of TiO2, wherein the r...

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Bibliographic Details
Main Author KUANG BO
Format Patent
LanguageChinese
English
Published 25.10.2022
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
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Summary:The invention provides optical glass, which comprises the following components in percentage by weight: 1 to 12 percent of SiO2; 3 to 18 percent of B2O3; the content of La2O3 is 45 to 65 percent; 1 to 13 percent of Y2O3; 1 to 13 percent of ZrO2; 3 to 18 percent of Nb2O5; 5-20% of TiO2, wherein the ratio of (SiO2 + B2O3)/Nb2O5 is 0.5-5.0. Through reasonable component design, the optical glass obtained by the invention has relatively high hardness and excellent weather resistance. 本发明提供一种光学玻璃，其组分以重量百分比表示，含有：SiO2：1～12％；B2O3：3～18％；La2O3：45～65％；Y2O3：1～13％；ZrO2：1～13％；Nb2O5：3～18％；TiO2：5～20％，其中(SiO2+B2O3)/Nb2O5为0.5～5.0。通过合理的组分设计，本发明获得的光学玻璃具有较高的硬度和优异的耐候性。
Bibliography:Application Number: CN202211032836