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US 7,679,820 B2Granted
IR absorbing reflector
AssigneeHewlett-Packard Development Company, L.P.
InventorsKuohua Wu, Anurag Gupta
Life of this patent
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Abstract
A infrared (IR) light absorbing reflector is formed with a substrate that supports a first IR absorptive multilayer part having multiple layers of partial IR absorbing thin films. The first IR absorptive multi-layer part supports a second visible light reflecting multilayer part.
Claims17
An infrared (IR) absorbing reflector comprising:
- a substrate;
- a first multilayer Quarter Wavelength Thickness (QWT) part having multiple sets of alternating layers of partial infrared (IR) absorbing thin films supported by the substrate;
- and
- a second multilayer QWT part having multiple sets of alternating layers that reflect visible light supported by the first multilayer part, wherein the second multilayer QWT part comprises dielectric layers of alternate relative high and low index material, and the dielectric layers comprise approximately 20 to 40 layers.
1 more element
An infrared (IR) absorbing reflector comprising:
- a substrate;
- a first multilayer Quarter Wavelength Thickness (QWT) part having multiple sets of alternating layers of partial infrared (IR) absorbing thin films supported by the substrate;
- and
- a second multilayer QWT part having multiple sets of alternating layers that reflect visible light supported by the first multilayer part, wherein the first multilayer QWT part comprises eight layers of alternating Ti and SiO2.
1 more element
An infrared (IR) absorbing reflector comprising:
- a substrate;
- means for absorbing particular wavelengths of IR (infrared) to obtain an overall absorption that is substantially uniform from a near IR to a far IR disposed on the substrate and including multiple sets of two alternating layers of IR absorbing films;
- and
- means for reflecting visible light while passing IR to the means for absorbing and including multiple alternating layers of TiO2 and SiO2.
1 more element
An infrared (IR) absorbing reflector comprising:
- a substrate;
- an IR (infrared) absorptive multilayer part including multiple sets of alternating layers of deposited thin-films formed directly on the substrate;
- and
- a visible light reflecting, IR transmissive, and UV (ultraviolet) absorbing multilayer part formed directly on the IR absorptive multilayer part, wherein the IR absorptive multilayer part includes eight layers of alternating dielectric, metal, or semi-metal thin film materials.
1 more element
A method comprising:
- forming an IR (infrared) absorptive part of multiple sets of alternating layers of thin-films supported by a substrate;
- and
- forming a visible light reflecting part of multiple sets of alternating layers of thin-films supported by the IR absorptive part, wherein the IR absorptive part comprises eight layers of alternating Ti and SiO2.
Dependencies are inferred from the claim text.