Coated architectural glass system and method
First Claim
1. In a coated article, a substrate having a surface and a multi-layer coating formed on said surface, said multi-layer coating comprising first and second metal layers and a dielectric layer disposed between said first and second metal layers with said first metal layer being thinner than the second metal layer so that the solar transmission of the coating can be changed independent of the reflection properties of the coating by varying the thickness of the first and second metal layers while maintaining the ratio of thickness of the metal first and second layers substantially constant, said dielectric layer having a thickness such that the reflection from the substrate side is not strongly colored in the region of 450 to 650 millimicrons.
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Accused Products
Abstract
Coated architectural glass system having a transparent substrate with a surface and a multi-layer coating disposed on the surface. The multi-layer coating comprises first and second metal layers and a dielectric layer disposed between the first and second metal layers. The first and second metal layers have a thickness ratio so that the transmission of the coating can be changed independent of its reflection properties, by varying the thickness of the metal layers while maintaining the ratio constant. The dielectric has a thickness such that the reflection from the coating is not strongly colored in the region of 400 millimicrons to approximately 700 millimicrons. In the method, the transmission of the coating can be changed merely by varying the thickness of the first and second metal layers in accordance with a thickness ratio.
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Citations
24 Claims
- 1. In a coated article, a substrate having a surface and a multi-layer coating formed on said surface, said multi-layer coating comprising first and second metal layers and a dielectric layer disposed between said first and second metal layers with said first metal layer being thinner than the second metal layer so that the solar transmission of the coating can be changed independent of the reflection properties of the coating by varying the thickness of the first and second metal layers while maintaining the ratio of thickness of the metal first and second layers substantially constant, said dielectric layer having a thickness such that the reflection from the substrate side is not strongly colored in the region of 450 to 650 millimicrons.
- 13. In an architectural glass system for use in a building having an inner enclosed area, a pane of glass having a first surface and a second surface and a multi-layer coating formed on said first surface, said multi-layer coating comprising first and second metal layers and a dielectric spacer layer disposed between the first and second metal layers, said first and second metal layers having a thickness ratio with said first metal layer being thinner than said second metal layer whereby the solar transmission of the coating can be changed by varying the thickness of the first and second metal layers in accordance with the thickness ratio of the first and second metal layers to change the solar transmission without appreciably changing the reflectance properties of the coating.
- 20. In a method for coating a substrate of the type which is substantially transparent and has an index of refraction of 1.50 to 1.52 and having a surface, deposition upon said surface first and second metal layers with a dielectric spacer layer of dielectric material disposed therebetween with the first metal layer being thinner than the second metal layer and varying the thickness of the first and second metal layers while maintaining the ratio of thickness of the first and second metal layers substantially constant to thereby change the solar transmission of the coating independent of the reflection properties of the coating,
Specification