Infrared absorbent green glass composition and laminated...

Details Infrared absorbent green glass composition and laminated... Infrared absorbent green glass composition and laminated...

2006-03-15

2009-12-15

Group, Karl E (Department: 1793)

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C501S064000, C428S426000

Reexamination Certificate

active

07632767

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<SiO2≦75; 0≦B2O3≦5; 0≦Al2O3≦5; 0≦MgO<2; 10<CaO≦15; 0≦SrO≦10; 0≦BaO≦10; 0≦Li2O≦5; 10≦Na2O≦15; 0≦K2O≦5; and 0≦TiO2≦0.5, where 10<MgO+CaO+SrO+BaO≦20 and 10≦Na2O+K2O≦17.5; MnO 0 to 300 mass ppm; and the following components as colorants, expressed in mass %: 0.4≦T—Fe2O3≦1.0, where T—Fe2O3is total iron oxide expressed as Fe2O3; and 0≦CeO2≦2.0. The mass ratio of FeO expressed as Fe2O3to T—Fe2O3is 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.

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EP Search Report Dated Jun. 13, 2006.

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