COATED ULTRAVIOLET ABSORBING GLASS

摘要

This article is a glass substrate having a coating thereon. The coating strongly absorbs certain ultraviolet radiation. The preferred coating absorbs ultraviolet radiation at wavelengths ranging from 230 up to at least 280 nm while providing high transmission throughout a region of visible wavelengths. The preferred coating consists essentially of three layers, wherein the first layer adjacent the substrate is a mixture of SiO2 and TiO2; the second layer is TiO2 and the third layer farthest from the substrate is SiO2.