Optical bandpass filter linear transmission curves.
RG 9 transmission curve BG 39, BG 40 transmission curves VG 6, VG 9, VG 14 transmission curves BG 3 transmission curve BG 7, BG 13, transmission curves BG 18, BG 38 transmission curves BG 12, BG 25, transmission curves BG 23, BG 26, BG 28 transmission curves UG 5, UG 11, BG 24a transmission curves UG 1 transmission curve