Patent ID: 9606272
Date: 2017-03-28
CPC Classifications: B32B,E04B,G02B,Y10T

Claim:
1. A transparent layered element, comprising: a first outer layer comprising a dielectric material, a second outer layer comprising a dielectric material, and a central layer, wherein the first and second outer layers each comprise a smooth outer main surface, the dielectric material of the first outer layer has substantially the same refractive index as the dielectric material of the second outer layer, the central layer is inserted between the first and second outer layers, the central layer is a transparent stack of thin layers comprising an alternation of “n” metal functional layers and “(n+1)” antireflection coatings, with n≧1, each metal functional layer is between two antireflection coatings, and the transparent layered element further comprises textured contact surfaces, which are between a dielectric layer and an adjacent metal layer, or which are between two adjacent dielectric layers having different refractive indices, and wherein each of the textured contact surfaces is textured and parallel to each of the other textured contact surfaces.