| 主权项 |
1. A transparent layered element having two main smooth outer surfaces, the trans par layered element comprising:
a lower outer layer and an upper outer layer, which each form one of the two main outer surfaces of the transparent layered element and which consist of dielectric materials having substantially the same refractive index, and a central layer intercalated between the per outer and upper outer layers, the central layer being formed either (a) by a single layer which is a dielectric layer of refractive index different from that of the lower outer and upper outer layers or a metallic layer, or (b) by a stack of layers which comprises at least one dielectric layer with a refractive index different to from that of the lower outer and upper outer layers or a metallic layer, wherein each contact surface between two adjacent layers of the transparent layered element, one of which is a dielectric layer and the other is a metallic layer or which are both dielectric layers with different refractive indices, is textured and parallel to other textured contact surfaces between two adjacent layers, one of which is a dielectric layer and the other is a metallic layer or which are both dielectric layers with different refractive indices, and wherein the upper outer layer is a sol-gel layer comprising an organic/inorganic hybrid matrix based on silica. |
