An optical glass with RI 1.71-1.80 and Abbe values 46-38 in the system B2O3-SiO2-La2O3-ZrO2-TiO2-ZnO-BaO.
Origin
Unknown
Journal Title
Bp 1 538 683, 24/1/79
Sector
Refractive Indexes
Class
RI 7