High infrared reflection coatings and thin film coating deposition methods
First Claim
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1. A coated transparent pane having opposed first and second major surfaces, said coated pane being part of a multiple-pane insulating glazing unit that includes a second pane, wherein the insulating glazing unit has a between-pane space to which the second major surface of said coated pane is exposed, said second major surface bearing a low-emissivity coating that has both a sheet resistance of less than 3.0 Ω
- /square and an emissivity of less than 0.03, said low-emissivity coating comprising three infrared-reflection film regions, wherein the low-emissivity coating includes transparent dielectric film between said second major surface and that one of said three infrared-reflection film regions that is nearest said second major surface, and wherein between said innermost infrared reflection film region and said second major surface the coating has less than 190 angstroms of transparent dielectric film having a refractive index of 1.7 or greater.
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Abstract
The invention provides low-emissivity coatings that are highly reflective of infrared radiation. The coating includes three infrared-reflection film regions, which may each comprise silver.
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12 Claims
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1. A coated transparent pane having opposed first and second major surfaces, said coated pane being part of a multiple-pane insulating glazing unit that includes a second pane, wherein the insulating glazing unit has a between-pane space to which the second major surface of said coated pane is exposed, said second major surface bearing a low-emissivity coating that has both a sheet resistance of less than 3.0 Ω
- /square and an emissivity of less than 0.03, said low-emissivity coating comprising three infrared-reflection film regions, wherein the low-emissivity coating includes transparent dielectric film between said second major surface and that one of said three infrared-reflection film regions that is nearest said second major surface, and wherein between said innermost infrared reflection film region and said second major surface the coating has less than 190 angstroms of transparent dielectric film having a refractive index of 1.7 or greater.
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