Infrared absorbent green glass composition and laminated glass including the same

Abstract

A glass composition that has improved infrared absorptivity while preventing the visible light transmittance from decreasing excessively. The glass composition includes: the following components, expressed in mass %: 65<SiO≦75; 0≦BO≦5; 0≦AlO≦5; 0≦MgO<2; 10<CaO≦15; 0≦SrO≦10; 0≦BaO≦10; 0≦LiO≦5; 10≦NaO≦15; 0≦KO≦5; and 0≦TiO≦0.5, where 10<MgO+CaO+SrO+BaO≦20 and 10≦NaO+KO≦17.5; MnO 0 to 300 mass ppm; and the following components as colorants, expressed in mass %: 0.4≦T—FeO≦1.0, where T—FeOis total iron oxide expressed as FeO; and 0≦CeO≦2.0. The mass ratio of FeO expressed as FeOto T—FeOis 20 to 44%. The wavelength at which a minimum transmittance is obtained in a range of 550 to 1700 nm is at least 1065 nm. The transmittance that is obtained at a wavelength of 1650 nm is not higher than the transmittance that is obtained at a wavelength of 730 nm.