Patent attributes
The invention relates to a transparent substrate provided with a thin-film multilayer comprising a metallic layer having infrared-reflection properties located between two, subjacent and superjacent, nonmetallic dielectric coatings, the superjacent dielectric coating comprising the sequence of thin layers deposited in the following order:at least one high-refractive-index layer, the physical thickness of the high-refractive-index layer or the sum of the physical thicknesses of the high-refractive-index layers lying between 15 and 40 nm; andat least one low-refractive-index layer, the physical thickness of the low-refractive-index layer or the sum of the physical thicknesses of the low-refractive-index layers lying between 40 and 120 nm,the refractive index difference between the one or more high-refractive-index layers and the one or more low-refractive-index layers lying between 0.7 and 1.2, preferably between 0.8 and 1.1.
