BK7 Glass is a borosilicate crown optical glass with high homogeneity, low bubble and inclusion content. Its good physical and chemical properties make BK7 Glass widely used in visible and near IR range. Most of windows, lenses and prisms, which used in laser, optical system, optical communication, are made from BK7 Glass.
A-GRADE BK7 GLASS SUBSTRATES / WAFER
A-Grade BK7 Optical Glass features 10-5 Scratch and Dig (Double Side Typ.)
Square, Rectangle or Round Shape Available
B-GRADE BK7 GLASS SUBSTRATES / WAFER
B-Grade BK7 Optical Glass features 20-10 Scratch and Dig (Double Side Typ.)
Square, Rectangle or Round Shape Available
C-GRADE BK7 GLASS SUBSTRATES / WAFER
C-Grade BK7 Optical Glass features 40-20 Scratch and Dig (Double Side Typ.)
Square, Rectangle or Round Shape Available. C-Grade BK7 substrates / plates / slides / wafers / windows are the basic grade for optical coating.
D-GRADE BK7 GLASS SUBSTRATES / WAFER
D-Grade BK7 Optical Glass features 60-40 Scratch and Dig, Double-side polished(DSP) typ.
Square, Rectangle or Round Shape Available