Glass article having a solar control coating
First Claim
Patent Images
1. A coated glass article comprising:
- (a) a glass substrate;
(b) a coating of antimony doped tin oxide deposited on and adhering to said glass substrate; and
(c) a coating of fluorine doped tin oxide deposited on and adhering to said coating of antimony doped tin oxide, with the thickness of said coatings selected so that said coated glass article exhibits a difference between visible light transmittance (Illuminant C) and total solar energy transmittance, integrated with an air mass 1.5 on a clear glass substrate at a nominal 3 mm thickness, to provide a selectivity of 13 or more and wherein said coating glass article has an emittance less than or equal to about 0.02.
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Accused Products
Abstract
A glass article having a solar control coating is disclosed for use in producing heat reducing glass especially for use in architectural windows. The coated article includes a glass substrate, a coating of an antimony doped tin oxide deposited on and adhering to the glass substrate and a coating of fluorine doped tin oxide deposited on and adhering to the surface of the coating of antimony doped tin oxide. The low emittance of the coated glass article, when combined with the surprisingly selective solar absorption of the multilayer stack provides improved heat rejection in summer and heat retention in winter, while permitting the transmittance of a relatively high degree of visible light.
24 Citations
27 Claims
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1. A coated glass article comprising:
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(a) a glass substrate;
(b) a coating of antimony doped tin oxide deposited on and adhering to said glass substrate; and
(c) a coating of fluorine doped tin oxide deposited on and adhering to said coating of antimony doped tin oxide, with the thickness of said coatings selected so that said coated glass article exhibits a difference between visible light transmittance (Illuminant C) and total solar energy transmittance, integrated with an air mass 1.5 on a clear glass substrate at a nominal 3 mm thickness, to provide a selectivity of 13 or more and wherein said coating glass article has an emittance less than or equal to about 0.02. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An insulating glass unit comprising:
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(a) a first glass substrate;
(b) a second glass substrate having an inner surface and an outer surface, said second glass substrate being secured to said first glass substrate in a spaced apart relationship with said inner surface facing said first glass substrate; and
(c) a multilayer coating stack deposited on and adhered to said inner surface of said second glass substrate, said multilayer coating stack comprising;
(i) a coating of antimony doped tin oxide deposited on and adhering to said inner surface, said coating of antimony doped tin oxide having a thickness of between about 1400 and 1900 Angstroms; and
(ii) a coating of fluorine doped tin oxide deposited on and adhering to said coating of antimony doped tin oxide, said coating of fluorine doped tin oxide having a thickness of between about 2200 and 3500 Angstroms;
said multilayer coating being such that said second glass substrate exhibits a difference between visible light transmittance (Illuminant C) and total solar energy transmittance, integrated with an air mass 1.5 on a clear glass substrate at a nominal 3 mm thickness, of 13 or more and wherein said coated glass article has an emittance less than or equal to 0.2. - View Dependent Claims (22, 23, 24)
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25. A coated glass article comprising:
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(a) a glass substrate;
(b) a coating of antimony doped tin oxide deposited on and adhering to said glass substrate, said coating of antimony doped tin oxide having a thickness of between about 1400 and 1900 Angstroms; and
(c) a coating of fluorine doped tin oxide deposited on and adhering to said coating of antimony doped tin oxide, said coating of fluorine doped tin oxide having a thickness of between about 2200 and 3500 Angstroms;
said coated glass article exhibiting a difference between visible light transmittance (Illuminate C)and total solar energy transmittance, integrated with an air mass 1.5 on a clear glass substitute at a nominal 3 mm thickness, to provide a selectivity of 13 or more and wherein said coated glass article has an emittance less than or equal to 0.2. - View Dependent Claims (26, 27)
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Specification