Patent ID: 6524688
Filing Date: 2003-02-25
Classification: B32B,C03C,C23C,G02B,Y10T

Abstract:
A high transmittance, low emissivity coated substrate with a substantially neutral color over a wide range of angles of incidence, the coating comprising:(a) a base coat of an anti-reflective metal oxide having a refractive index of about 2.0 or more applied to a surface of said substrate at a thickness of no more than about 275 Ã¥; (b) a first reflective metal layer applied over said base coat; (c) an intermediate anti-reflective layer applied over said first reflective layer, the ratio of thickness of the base coat to the thickness of the intermediate layer being no more than 0.33; (d) a second reflective metal layer applied over said intermediate anti-reflective layer; and (e) an outer anti-reflective layer applied over said second reflective metal layer; wherein the total thickness of the coating is about 1700 Ã¥ or less.