SUBSTRATE PROVIDED WITH A STACK HAVING THERMAL PROPERTIES

摘要

The invention relates to a material comprising a transparent substrate coated with a stack of thin layers comprising, starting at the substrate, three functional metallic silver-based layers and four dielectric coatings which are disposed alternately in such a way that every functional metallic layer is positioned between two dielectric coatings. The thicknesses of the three functional layers and the thicknesses of the dielectric coatings are selected such that they confer upon the materials a solar gain value lower than 20% for a light transmittance in the order of 40%.