Ultraviolet and infrared ray absorbing colored glass plate

Abstract

To provide an ultraviolet and infrared ray absorbing green glass suitable as a window glass for automobiles, which does not substantially contain an expensive raw material whose recycling is difficult, can exhibit an optimum ultraviolet and infrared ray absorption when used in a thin plate having a thickness of not more than 3.5 mm, and has a low excitation purity, the ultraviolet and infrared ray absorbing colored glass plate having: a soda-lime silicate glass formulation substantially free from CeO2; and a thickness (t mm) of from 1.0 to 3.5 mm; containing 0.96 to 1.25%, in terms of Fe2O3, of total iron oxide (T-Fe2O3) and 0.0001 to 0.005% of CoO, as coloring components, with FeO/T-Fe2O3 falling within the range represented by the relational equation with respect to the thickness and falling within the range represented by the relational equation with respect to the content of T-Fe2O3; and when the glass plate has a thickness of 2.6 mm, having a specified visible light transmittance, total solar energy transmittance, ultraviolet ray transmittance, dominant wavelength and excitation purity.

Dependencies are inferred from the claim text.