Low-emissivity window films and coatings incorporating nanoscale wire grids
First Claim
1. A device for reducing an emissivity of a window to long-wavelength infrared light comprisinga film of conductive material formed in a pattern as an arrangement of thin conductive material elements and void areas, whereinthe thin conductive material elements are spaced apart a distance such that the conductive material is highly reflective to long-wavelength infrared light and highly transmissive to visible and near-infrared light, andenergy efficiency and an effective insulation value of the window are increased, an effective thermal conductivity of the window is reduced, and transmissivity to visible and near-infrared radiation is maximized.
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Accused Products
Abstract
A high-transparency, low-emissivity window film or coating is designed to maximize so-called greenhouse heating. This effect is achieved through the use of conductive grids and/or gratings whose width and spacing has been selected such that the grid appears as a uniform conductive film to long-wavelength infrared (blackbody) radiation. The conductive grid film reflects the blackbody radiation strongly, and such that the grid appears highly transparent to visible and near-infrared light, and therefore transmits it.
217 Citations
34 Claims
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1. A device for reducing an emissivity of a window to long-wavelength infrared light comprising
a film of conductive material formed in a pattern as an arrangement of thin conductive material elements and void areas, wherein the thin conductive material elements are spaced apart a distance such that the conductive material is highly reflective to long-wavelength infrared light and highly transmissive to visible and near-infrared light, and energy efficiency and an effective insulation value of the window are increased, an effective thermal conductivity of the window is reduced, and transmissivity to visible and near-infrared radiation is maximized.
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17. A low emissivity window comprising
a pane of glass; - and
a film of a conductive material formed in a pattern as an arrangement of thin conductive material elements and void areas, wherein the thin conductive material elements are spaced apart a distance such that the conductive material is highly reflective to long-wavelength infrared light and highly transmissive to visible and near-infrared light, and energy efficiency and an effective insulation value of the window are increased, an effective thermal conductivity of the window is reduced, and transmissivity to visible and near-infrared radiation is maximized. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 30, 31, 32)
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33. A low emissivity window comprising
a pane of glass; - and
a grid of nanoscale conductive wires supported on the pane of glass, wherein the nanoscale conductive wires are spaced apart a distance such that the grid is highly reflective to long-wavelength infrared light and highly transmissive to visible and near-infrared light, and enemy efficiency and an effective insulation value of the window are increased, an effective thermal conductivity of the window is reduced, and transmissivity of the window to visible and near-infrared radiation is maximized. - View Dependent Claims (34)
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Specification