Anti-reflective, thermally insulated glazing articles
AssigneePilington North America, Inc.
InventorsSrikanth Varanasi, David Strickler
Life of this patent
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Abstract
A laminated glass unit having at least two sheets of glass separated and bonded by a polymeric interlayer material, and further having multi-layer thin film coatings on each of the unbonded surfaces of the at least two glass sheets, is disclosed. Two or more of such laminated glass units can be utilized in various configurations to form an insulated glass unit. The thin films deposited on the unbonded glass surfaces have anti-reflective, iridescence-suppressing and solar control properties when suitable configurations, materials and layer thicknesses are chosen. The laminated glass unit and insulated glass units of the invention exhibit an excellent combination of low visible light reflectance and thermal insulating properties.
Claims30
A laminated glass unit comprising:
- at least first and second sheets of glass, each of the at least first and second glass sheets having first and second major surfaces, with each glass sheet having one major surface in adhesively bonding contact with a polymeric interlayer, the interlayer separating the glass sheets one from the other;
- the remaining major surface of each of the first and second glass sheets having a coating stack deposited thereon, the coating stacks each comprising:
- an electrically conductive inorganic metal oxide layer having a refractive index >1.8 deposited over the surface of the respective glass sheets;
- and
- an inorganic dielectric oxide layer having a refractive index <1.6 deposited over the inorganic metal oxide layer of the laminated glass unit;
- the laminated glass unit exhibiting a visible light reflectance of <2% and a center-of-glass U-value of <0.85.
An insulated glass unit comprising:
- at least first and second laminated glass units, the at least first and second laminated glass units being parallel to and separated from each other, and each having a first and a second major surface;
- a first coating stack deposited on the first major surface of the first laminated glass unit comprising an electrically conductive inorganic metal oxide layer and an inorganic dielectric oxide layer;
- a second coating stack deposited on the second major surface of the first laminated glass unit comprising an electrically conductive inorganic metal oxide layer and an inorganic dielectric oxide layer;
- a third coating stack deposited on the first major surface of the second laminated glass unit comprising an electrically conductive inorganic metal oxide layer and an inorganic dielectric oxide layer;
- and
- a fourth coating stack deposited on the second major surface of the second laminated glass unit comprising an electrically conductive inorganic metal oxide layer and an inorganic dielectric oxide layer;
- wherein each of the electrically conductive metal oxide layers of the first through fourth coating stacks have a refractive index >1.8, and each of the inorganic dielectric oxide layers of the first through fourth coating stacks have a refractive index <1.6;
- the insulated glass unit exhibiting a visible light reflectance of <4% and a center-of-glass U value of <0.35.
An insulated glass unit comprising:
- at least first and second laminated glass units, the at least first and second laminated glass units being parallel to and separated from each other, and each having a first and a second major surface;
- a first coating stack deposited on at least one major surface of the first laminated glass unit comprising an electrically conductive inorganic metal oxide layer and an inorganic dielectric oxide layer;
- a second coating stack deposited on at least one major surface of the second laminated glass unit comprising an electrically conductive inorganic metal oxide layer and an inorganic dielectric oxide layer;
- wherein each of the electrically conductive metal oxide layers of the first and second coating stacks have a refractive index >1.8, and each of the inorganic dielectric oxide layers of the first and second coating stacks have a refractive index <1.6.
Dependencies are inferred from the claim text.