Patent ID: 7311976

Claim:
A glazing coated with (1) at least one layer having thermochromic properties and comprising vanadium oxide which is substoichiometric in terms of oxygen, and (2) at least two other layers having optical properties, wherein said properties are antireflection properties in the visible wavelength range, wherein the layers (2) comprise a dielectric that is at least one selected from the group consisting of metal oxides, nitrides, silicon oxides, and silicon oxycarbides, wherein one of the other layers (2) is formed directly below the layer (1) having thermochromic properties and one of the other layers (2) is formed directly above the layer (1) having thermochromic properties, and wherein the said at least one layer (1) contains a vanadium-rich phase in which the vanadium is in oxidized form and a vanadium-lean phase in which the vanadium is in metallic form, and has a cermet structure.