Method of producing CRT funnel glass suitable for glass recycling, and CRT funnel glass

摘要

On producing CRT funnel glass, Fe2O3 is added in a range of 0.05 to 1 mass% into a glass material of the CRT funnel glass so that a fluctuation of transmittance of light having a wavelength of 1,050 nm becomes 10% or less in a thickness of 10mm of the CRT funnel glass. As a glass material of the CRT funnel glass, CRT panel glass or CRT frit may be used.