Patent ID: 8017244
Filing Date: 2011-09-13
Classification: C03C,Y10T

Abstract:
1. A transparent substrate coated with a stack of layers consisting essentially of, in succession starting from the transparent substrate: a) a first layer of dielectric material; b) a first absorbent layer; c) a first infrared reflective layer; d) optionally a sacrificial barrier layer; e) an intermediate layer; f) optionally a metal layer; g) a last infrared reflective layer; h) a last absorbent layer; i) optionally a sacrificial barrier layer; and j) a last layer of dielectric material; wherein when the transparent substrate is a 6 mm clear soda-lime glass, a light absorption value of the coated transparent substrate is between 35 and 67%, a colorimetric index a* of a reflected colour, with respect to the clear soda-lime glass, is between 0 and −10, and a colorimetric index b* of a reflected colour, with respect to the clear soda-lime glass is between 0 and −20, and wherein the absorbent layers comprise a material selected from the group consisting of titanium, zirconium, stainless steel, niobium, zinc, nickel, an alloy of these metals and nitrides thereof.