Optical glass

The invention provides optical glass which comprises the following components in percentage by weight: 2-18% of SiO2; 8 to 22 percent of B2O3; la2O3: 40% to 60%; 3 to 18 percent of Y2O3; zrO2: 1%-15%; 2 to 15 percent of Nb2O5; 0 to 9 percent of Gd2O3; znO: 0-10%, wherein (Gd2O3 + ZnO)/Y2O3 is 2.0 or...

Full description

Saved in:
Bibliographic Details
Main Author KUANG BO
Format Patent
LanguageChinese
English
Published 04.11.2022
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
Online AccessGet full text

Cover

More Information
Summary:The invention provides optical glass which comprises the following components in percentage by weight: 2-18% of SiO2; 8 to 22 percent of B2O3; la2O3: 40% to 60%; 3 to 18 percent of Y2O3; zrO2: 1%-15%; 2 to 15 percent of Nb2O5; 0 to 9 percent of Gd2O3; znO: 0-10%, wherein (Gd2O3 + ZnO)/Y2O3 is 2.0 or less. Through reasonable component design, the optical glass obtained by the invention has lower thermal expansion coefficient and excellent abrasion degree. 本发明提供一种光学玻璃，其组分以重量百分比表示，含有：SiO2：2～18％；B2O3：8～22％；La2O3：40～60％；Y2O3：3～18％；ZrO2：1～15％；Nb2O5：2～15％；Gd2O3：0～9％；ZnO：0～10％，其中(Gd2O3+ZnO)/Y2O3为2.0以下。通过合理的组分设计，本发明获得的光学玻璃具有较低的热膨胀系数和优异的磨耗度。
Bibliography:Application Number: CN202211031611