substrato, notadamente substrato de vidro transparente, vidraça, e, utilização do substrato

• Main Authors: ULRICH BILLERT, ROBERT DRESE, STÉPHANE LAURENT
• Format: Patent
• Language: Portuguese
• Published: 19.04.2016
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; METALLURGY; MINERAL OR SLAG WOOL; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

The invention relates to a substrate (10), especially a transparent glass substrate, provided with a thin-film multilayer comprising an alternation of "n" metallic functional layers (40, 80, 120) especially of functional layers based on silver or a metal alloy containing silver, and of "(n+1)" antireflection coatings (20, 60, 100, 140), with n being an integer 3, each antireflection coating comprising at least one antireflection layer (24, 64, 104, 144), so that each functional layer (40, 80, 120) is positioned between two antireflection coatings (20, 60, 100, 140), characterized in that the thickness ex of each functional layer (80, 120) is less than the thickness of the preceding functional layer in the direction of the substrate (10) and is such that: ex=α ex−1, with: x which is the row of the functional layer starting from the substrate (10), x−1 which is the row of the preceding functional layer in the direction of the substrate (10), α which is a number such that 0.5 α<1, and preferably 0.5 α 0.95, or even 0.6 α 0.95, and the thickness of the first metallic functional layer starting from the substrate is such that: 10 e1 18 in nm, and preferably 11 e1 15 in nm.