B 270® - Superwite is a universal, economically priced quality glass with high transparency for visible and near-infrared light.
SiO2＝69.13％
B2O3＝10.75％
BaO＝3.07％
Na2O＝10.40％
K2O＝6.29％
As2O3＝0.36％
B270 or equivalent glass works efficiently from 320nm though to 2600nm with an average transmission of 90% from 400nm to 2000nm.
Coating substrates
LCD cover glass
Touch panels
Image forming optics
Chip masks
Optical windows
Laboratory applications
Blanks for lenses and glasses