Patent ID: 7192648

Claim:
A substrate bearing a low-emissivity coating, the low-emissivity coating comprising, moving outwardly from the substrate: a) a first film layer comprising amorphous material formed directly on the substrate, the first film layer having a thickness of less than 100 angstroms; b) a second film layer comprising a transparent dielectric material; c) a third film layer comprising an infrared-reflective material; d) an intermediate film region comprising at least three layers each having a physical thickness of less than 200 angstroms; e) a seventh film layer comprising an infrared-reflective material; and f) an eighth film layer comprising a transparent dielectric material, wherein the substrate has an index of refraction of between about 1.4 and about 1.5, and wherein the first film layer has an index of refraction of between about 1.4 and about 1.5.