High shading performance coatings
First Claim
1. An insulating glass unit comprising first and second panes held in a spaced-apart configuration, the panes having confronting inner surfaces oriented toward a between-pane space and opposed outer surfaces oriented away from the between-pane space, wherein one of said inner surfaces bears a high performance, low-emissivity coating comprising first and second infrared-reflective films and first and second high absorption blocker layers positioned respectively directly over said first and second infrared-reflective films, the coating including an inner coat between the first infrared-reflective film and said one of said inner surfaces, the coating including a middle coat between the first high absorption blocker layer and the second infrared-reflective film, the coating including an outer coat over the second high absorption blocker layer, wherein the first and second high absorption blocker layers have a combined thickness of at least 70 angstroms, the insulating glass unit having a visible transmission of between about 0.38 and about 0.42, and yet the insulating glass unit has an exterior reflected color characterized by ah and bh color coordinates that are both negative, the insulating glass unit having a solar heat gain coefficient of less than about 0.27 and yet having an exterior visible reflectance of less than about 18%, wherein the coating provides an emissivity of less than 0.08.
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Abstract
The invention provides high shading performance, low-emissivity coatings. The invention provides a monolithic pane bearing a high shading performance, low-emissivity coating. The invention also provides an insulating glass unit bearing a high shading performance, low-emissivity coating. Finally, the invention provides methods of producing coated substrates by depositing high shading performance, low-emissivity coatings.
156 Citations
20 Claims
- 1. An insulating glass unit comprising first and second panes held in a spaced-apart configuration, the panes having confronting inner surfaces oriented toward a between-pane space and opposed outer surfaces oriented away from the between-pane space, wherein one of said inner surfaces bears a high performance, low-emissivity coating comprising first and second infrared-reflective films and first and second high absorption blocker layers positioned respectively directly over said first and second infrared-reflective films, the coating including an inner coat between the first infrared-reflective film and said one of said inner surfaces, the coating including a middle coat between the first high absorption blocker layer and the second infrared-reflective film, the coating including an outer coat over the second high absorption blocker layer, wherein the first and second high absorption blocker layers have a combined thickness of at least 70 angstroms, the insulating glass unit having a visible transmission of between about 0.38 and about 0.42, and yet the insulating glass unit has an exterior reflected color characterized by ah and bh color coordinates that are both negative, the insulating glass unit having a solar heat gain coefficient of less than about 0.27 and yet having an exterior visible reflectance of less than about 18%, wherein the coating provides an emissivity of less than 0.08.
- 11. An insulating glass unit comprising first and second panes held in a spaced-apart configuration, the panes having confronting inner surfaces oriented toward a between-pane space and opposed outer surfaces oriented away from the between-pane space, wherein one of said inner surfaces bears a high performance, low-emissivity coating comprising first and second infrared-reflective films and first and second high absorption blocker layers positioned respectively directly over said first and second infrared-reflective films, the coating including an inner coat between the first infrared-reflective film and said one of said inner surfaces, the inner coat having an optical thickness and comprising at least one transparent dielectric film, the coating including a middle coat between the first high absorption blocker layer and the second infrared-reflective film, the middle coat having an optical thickness and comprising at least one transparent dielectric film, the coating including an outer coat over the second high absorption blocker layer, wherein the coating has a ratio defined as the optical thickness of the inner coat divided by the optical thickness of the middle coat, said ratio being between about 0.12 and about 0.2, wherein the insulating glass unit has a visible transmission of between about 0.38 and about 0.42, and yet the insulating glass unit has an exterior reflected color characterized by ah and bh color coordinates that are both negative, the insulating glass unit having a solar heat gain coefficient of less than about 0.27 and yet having an exterior visible reflectance of less than about 18%, wherein the coating provides an emissivity of less than 0.08.
Specification
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- Resources
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Current AssigneeCardinal CG Company (Cardinal Glass Industries Incorporated)
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Original AssigneeCardinal CG Company (Cardinal Glass Industries Incorporated)
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InventorsHoffman, Wayne L.
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Primary Examiner(s)XU, LING X
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Application NumberUS11/530,260Publication NumberTime in Patent Office1,299 DaysField of SearchNoneUS Class Current428/432CPC Class CodesC03C 17/36 at least one coating being ...C03C 17/3618 Coatings of type glass/inor...C03C 17/3639 Multilayers containing at l...C03C 17/3644 the metal being silverC03C 17/3652 the coating stack containin...C03C 17/366 Low-emissivity or solar con...C03C 17/3681 the multilayer coating bein...C03C 2217/78 Coatings specially designed...E06B 9/24 Screens or other constructi...
