Wavelength selective applied films with glare control
First Claim
1. A solar control film having low visible light transmittance and low visible light reflectance comprising:
- a first sheet of transparent substrate material having deposited thereon a solar-load-reduction (SLR) film for preferentially reducing infrared light energy transmitted through said SLR film, said SLR film comprising a film stack on a first surface of said first sheet, said film stack including at least a first dielectric film proximate to said first sheet, a first metal film, a second dielectric film, a second metal film, and a third dielectric film;
a second sheet of transparent substrate material having deposited thereon a transparent film of metal effective to partially block light transmittance and to have a low visible light reflectance; and
an optically massive layer located between said first and second transparent substrates.
5 Assignments
0 Petitions
Accused Products
Abstract
A solar control film having low visible light transmittance and low visible light reflectance is comprised of a first sheet of transparent substrate material having deposited thereon a solar-load-reduction film for preferentially reducing infrared light energy transmitted through the film, and a second sheet of transparent substrate material having deposited thereon a thin, transparent film of metal effective to partially block light transmittance, wherein the first sheet of transparent substrate and the second sheet of transparent substrate are separated by an optically massive layer that prevents the constructive and destructive interference of reflected light. A preferred embodiment of a solar control film includes, in order, a pressure-sensitive adhesive layer, a polyethylene terephthalate layer, a Fabry-Perot interference filter layer, an adhesive layer, a grey metal layer, another polyethylene terephthalate layer, and a hardcoat layer. The preferred solar control film provides wavelength selectivity in the infrared range while controlling visible light transmission and minimizing visual light reflectance.
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Citations
20 Claims
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1. A solar control film having low visible light transmittance and low visible light reflectance comprising:
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a first sheet of transparent substrate material having deposited thereon a solar-load-reduction (SLR) film for preferentially reducing infrared light energy transmitted through said SLR film, said SLR film comprising a film stack on a first surface of said first sheet, said film stack including at least a first dielectric film proximate to said first sheet, a first metal film, a second dielectric film, a second metal film, and a third dielectric film; a second sheet of transparent substrate material having deposited thereon a transparent film of metal effective to partially block light transmittance and to have a low visible light reflectance; and an optically massive layer located between said first and second transparent substrates. - View Dependent Claims (2, 3, 4, 5)
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6. A solar control film having low visible light transmittance and low visible light reflectance comprising:
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a first sheet of transparent substrate material having deposited thereon a Fabry-Perot interference filter for preferentially reducing infrared light energy transmitted through said film, said interference filter comprising a film stack on a first surface of said first sheet, said film stack including at least a first oxide film proximate to said first sheet, a first metal film, a second oxide film, a second metal film, and a third oxide film; a second sheet of transparent substrate material having deposited thereon a transparent layer of metal effective to partially block light transmittance and to have a low visible light reflectance; and an optically massive layer located between said first and second transparent substrates. - View Dependent Claims (7, 8, 9)
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10. A solar control film having low visible light transmittance and low visible light reflectance comprising:
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a first sheet of transparent substrate material having first and second sides; a solar-load-reduction film stack on said second side of said first sheet of transparent substrate, said film stack including; a first oxide layer on said second side of said second sheet of transparent substrate; a first metal layer on said first oxide layer; a second oxide layer on said first metal layer; a second metal layer on said second oxide layer; and a third oxide layer on said second metal layer; a second sheet of transparent substrate material having first and second sides; a thin, transparent layer of grey metal on said second side of said second sheet of transparent substrate material; and a layer of adhesive between said solar-load-reduction film stack on said first sheet of transparent substrate material and said thin, transparent layer of metal on said second sheet of transparent substrate material. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification