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Glazing provided with a conducting and/or low emissive functional coating

  • US 5,520,996 A
  • Filed: 02/21/1995
  • Issued: 05/28/1996
  • Est. Priority Date: 04/29/1993
  • Status: Expired due to Fees
First Claim
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1. A glazing comprising a transparent glass substrate (1) provided with a transparent, and conducting and/or low emissive functional coating (3) based on one or more metal oxides, said functional coating (3) having an inner face and an outer face and a refractive index of about 2 and a thickness between 300 and 450 nm, an "inner" coating layer (2) with a geometrical thickness between 70 and 135 nm and a refractive index between 1.65 and 1.90 and positioned between an inner face of the functional coating (3) and the substrate (1) and an "outer" coating layer (4) with a geometrical thickness between 70 and 110 nm and a refractive index between 1.40 and 1.70 and which is located on an outer face of the functional coating (3), and wherein said glazing, when combined with another transparent substrate to form a double glazing, the substrate (1) provided with its coatings (2, 3 and 4), has a reflection color on the coating side, whose saturation is below 5 and whose dominant wavelength between 465 and 480 nm belongs to the blue range, and whose light reflection value RL is equal to or below 15%.

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