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High transmittance, low emissivity coatings for substrates

  • US 7,060,359 B2
  • Filed: 01/03/2005
  • Issued: 06/13/2006
  • Est. Priority Date: 03/27/1992
  • Status: Expired due to Fees
First Claim
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1. A high transmittance, low emissivity coated substrate comprising a transparent substrate having a coating providing the coated substrate with a substantially neutral color over a wide range of angles of incidence, the coating comprising:

  • (a) a base coat adjacent to the transparent substrate at a thickness of no more than about 275 angstroms;

    (b) a first reflective metal layer applied over the base coat;

    (c) an intermediate layer applied over the first reflective metal layer and having a thickness that is at least three times the thickness of the base coat;

    (d) a second reflective metal layer applied over the intermediate layer;

    wherein the coating includes three or more reflective metal layers, and an outer metal oxide layer is applied over the outermost reflective metal layer.

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