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US 7,817,328 B2Granted
Thermochromic window structures
AssigneePleotint, L.L.C.
InventorsFrederick A. Millett, Michael D. Broekhuis, Harlan J. Byker, Paul H. Ogburn, Jr.
Life of this patent
Estimating the term…
Abstract
An energy efficient, thermochromic device that may be used to allow sunlight or solar radiation into a building or structure when sunlight is absent or at high sun angles and substantially blocks solar radiation when sunlight is directly on the window.
Claims38
A sunlight responsive thermochromic (SRT) device comprising:
- a layer of a thermochromic material that reversibly increases in its absorption of visible and/or NIR radiation when the temperature of the thermochromic material increases and a net decrease in their ability to absorb visible and/or NIR radiation as the temperature of the system decreases for temperatures within the active range of the system,
- a pair of transparent substrates, the layer of the thermochromic material being interposed between the substrates to form a laminate having a peripheral edge;
- the peripheral edge being sealed.
A sunlight responsive thermochromic (SRT) device comprising:
- a layer of a thermochromic material that reversibly increases in its absorption of visible and/or NIR radiation when the temperature of the thermochromic material increases and a net decrease in their ability to absorb visible and/or NIR radiation as the temperature of the system decreases for temperatures within the active range of the system,
- a pair of transparent substrates, the layer of the thermochromic material being interposed between the substrates to form a laminate wherein the thermochromic material includes one or more transition metal ions that reversibly form complexes with one or more HεL's when the temperature of the thermochromic material increases and reversibly form complexes with LεL's when the temperature of the thermochromic material decreases.
Dependencies are inferred from the claim text.