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US 12,122,707 B2Granted
Coated glass articles
AssigneePilkington Group Limited
InventorsLila Raj Dahal, Vikash Ranjan, Srikanth Varanasi
Life of this patent
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Abstract
A coated glass article provides a visible light reflecting, solar control glazing with a low emittance, a low solar heat gain coefficient, and a low shading coefficient that can significantly improve energy costs in buildings and homes while providing a desirable neutral color for, at least, film side reflection. The low emittance characteristic of the 5 glazing would minimize any indirect heat gain from absorption.
Claims20
A coated glass article comprising:
- a) a glass substrate comprised of a sheet of tinted glass;
- b) a first coating deposited over the glass substrate, the first coating comprising an absorbing layer of a doped tin oxide;
- c) a second coating deposited over and in direct contact with the first coating, the second coating comprising a low emissivity layer of a doped oxide of indium, tin or zinc and having a first refractive index;
- d) a third coating deposited over the second coating, the third coating comprising a reflecting layer and having a second refractive index greater than the first refractive index of the second coating;
- and
- e) a two-layer color suppression underlayer deposited between the glass substrate and the first coating;
- the coated glass article having an Rf>15%, an emissivity greater than 0.08 and less than or equal to about 0.3, and a Tvis of 17% or more and 31% or less.
4 more elements
A coated glass article comprising:
- a) a glass substrate;
- b) a first coating deposited over the glass substrate, the first coating comprising an absorbing layer of a doped tin oxide;
- c) a second coating deposited over and in direct contact with the first coating, the second coating comprising a low emissivity layer of a doped oxide of indium, tin or zinc and having a first refractive index;
- d) a third coating deposited over the second coating, the third coating comprising a reflecting layer and having a second refractive index greater than the first refractive index of the second coating;
- and
- e) a two-layer color suppression underlayer deposited between the glass substrate and the first coating;
- wherein the coated glass article has an Rf>15%, an emissivity greater than 0.08 and less than or equal to about 0.3, a Tsol of greater than 0% and less than or equal to 16%, and a film side reflection b* of from −1.9 to +2.9.
4 more elements
A coated glass article comprising:
- a) a glass substrate;
- b) a first coating deposited over the glass substrate, the first coating comprising an absorbing layer of a doped tin oxide;
- c) a second coating deposited over and in direct contact with the first coating, the second coating comprising a low emissivity layer of a doped oxide of indium, tin or zinc and having a first refractive index;
- d) a third coating deposited over the second coating, the third coating comprising a reflecting layer and having a second refractive index greater than the first refractive index of the second coating;
- and
- e) a two-layer color suppression underlayer deposited between the glass substrate and the first coating;
- wherein the coated glass article has an Rf>15%, an emissivity greater than 0.08 and less than or equal to about 0.3, and a Tvis of 17% or more and 31% or less.
4 more elements
Dependencies are inferred from the claim text.