CDO-FREE AND THO2-FREE OPTICAL GLASS HAVING REFRACTIVE INDEXOF 1.73-1.78, ABBE'S NUMBER OF 30-34 AND HIGH DEVITRIFICATION STABILITY

摘要

a new cdo and tho2 free optical glass with brechwerten of 1.73-1.78 and payment of 30 - 34 and with very good entglasungsstabilitu00e4t comprises (in wt.%): $f1 with the sio2 / b2o3 ratio of 1.0 to 1.5.