Patent ID: 9416582
Filing Date: 2016-08-16
CPC Classification: C03C,E06B,Y10T

Claim Text:
1. A double glazing, comprising: a first glass sheet having a first face a second glass sheet comprising a first low-emissivity layer on a first face wherein the first low-emissivity layer comprises a sputtering layer comprising an infrared-reflecting metal layer produced by sputtering, wherein the second low-emissivity layer comprises a pyrolytic layer of tin oxide doped with antimony or fluorine deposited by gas pyrolysis, wherein the double glazing has a light transmission of not less than 60% for thicknesses of the clear glass sheets of 4 mm, wherein at least one of the group consisting of a layer of SiOxCy, a set of layers of TiO wherein at least one protection layer is interposed between the sputtering layer and the first face wherein the pyrolytic layer has a thickness of not less than 200 nm and a surface roughness Ra of less than 10 nm, and wherein the double glazing has a haze of less than 0.3%.