Ultraviolet-visible light transmission glass

Abstract

This invention provides an ultraviolet-visible light transmitting glass that exhibits high transmittance from the ultraviolet to the visible light region, is less prone to glass degradation caused by ultraviolet radiation, and has a low melting temperature suitable for stamping. The ultraviolet-visible light transmitting glass of this invention comprises glass components and has a transmittance of 85% or more at a wavelength of 250 nm. The aforementioned glass components include: SiO2 at a content of 30-50% by weight, Al2O3 at a content of 16-30% by weight, B2O3 at a content of 20-40% by weight, Li2O at a content of 3-15% by weight, Na2O and K₂O at a total content of less than 10% by weight, MgO, CaO, SrO and BaO at a total content of 3-15% by weight, ZnO at a content of less than 1% by weight, and As2O5, Sb2O3, Fe2O3, WO3, PbO, CeO2 and TiO2 at a total content of less than 50 ppm by weight.

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