Color-corrected heat-reflecting composite films and glazing products containing the same
First Claim
1. A glazing material comprising a visible light transparent structural sheet member having two sides and a surrounding edge, said sheet member having adhered to one of its sides a color-corrected infrared-reflecting Fabry-Perot interference filter composite, said composite itself comprising a seven layer structure made up of the following sequential layers;
- a discrete continuous visible light transparent dielectric boundary layer;
a discrete continuous visible light transparent metal layer;
a discrete continuous visible light transparent dielectric spacer layer;
a discrete continuous visible light transparent metal layer;
a discrete continuous visible light transparent dielectric spacer layer;
a discrete continuous visible light transparent metal layer; and
a discrete continuous visible light transparent dielectric outer layer;
wherein the metal layers each comprise silver and each are from 4 to 17 nm in thickness and the dielectric layers each have an index of refraction of from about 1.75 to about 2.25 with the spacer layers having a thickness of from 70 to 100 nm and the boundary and outer layers each having a thickness of from about 30 nm to about 70 nm.
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Accused Products
Abstract
Visually transparent, color corrected, infra-red reflecting films are disclosed for solar heat control. The films employ Fabry-Perot sandwich interference filters which are characterized by having three or more transparent layers of sputter-deposited metal such as silver directly contiguous with dielectric spacer layers and optionally boundary layers. Methods for producing these materials by sputtering techniques as well as glazing materials incorporating these films are disclosed, as well.
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Citations
12 Claims
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1. A glazing material comprising a visible light transparent structural sheet member having two sides and a surrounding edge, said sheet member having adhered to one of its sides a color-corrected infrared-reflecting Fabry-Perot interference filter composite, said composite itself comprising a seven layer structure made up of the following sequential layers;
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a discrete continuous visible light transparent dielectric boundary layer; a discrete continuous visible light transparent metal layer; a discrete continuous visible light transparent dielectric spacer layer; a discrete continuous visible light transparent metal layer; a discrete continuous visible light transparent dielectric spacer layer; a discrete continuous visible light transparent metal layer; and a discrete continuous visible light transparent dielectric outer layer; wherein the metal layers each comprise silver and each are from 4 to 17 nm in thickness and the dielectric layers each have an index of refraction of from about 1.75 to about 2.25 with the spacer layers having a thickness of from 70 to 100 nm and the boundary and outer layers each having a thickness of from about 30 nm to about 70 nm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification