HIGHLY REFRACTIVE GLASS Russian patent published in 2021 - IPC C03C3/12 C03C4/00 

FIELD: glass.

SUBSTANCE: invention relates to the field of technology for producing glasses based on heavy metal oxides and pertains to glass compositions usable in optical instrument manufacture. The highly refractive glass for optical instrument manufacture comprises Bi₂O₃, PbO, Ga₂O₃, at the following ratio of components, % wt.: Bi₂O₃+PBO 56.8, Ga₂O₃ 43.2, and at least one of the oxides Al₂O₃, SiO₂ in an amount of 1 to 8% wt. over 100%.

EFFECT: production of a low-temperature glass containing no toxic components and providing a refractive index close to 2.1.

1 cl, 2 tbl