DECORATIVE SUBSTRATE, ESPECIALLY FOR ARTIFICIAL jewels EFFECT COLOR, AND METHOD FOR PRODUCING SUCH effect of colors for decorative transparent substrate

摘要

1. The decorative substrate, especially an artificial jewelery stone with a color effect, characterized in that it is formed as a transparent substrate which comprises layers on its back side, wherein these layers are sprayed and disposed in this order from the back side of the substrate: an optically modifying layer with a thickness of 2 to 80 nm, which layer is formed from at least one element or oxide from the group consisting of Ge, Si and oxides of Ti, Zr, Nb and Al, which are alternatively doped with other elements, then the reflective layer formed at least from the group consisting of Au, Ag, Cu, Al, Cr, Ti, aluminum bronzes and Au alloys of a metal or alloy, Ag and Cu and having a thickness ensuring maximum possible reflection of incident visible light depending on the spectral reflectance the material from which the reflective layer back into the transparent substrate, then an intermediate layer having a thickness of 10 to 100 nm, which layer is formed from at least one metal from the group consisting of Ti, Cr and Cu, and then a layer of protective lacquer . ! 2. The decorative substrate according to claim 1, characterized in that it comprises between the optically modifying layer and the reflection layer an adhesive layer having a thickness of 2 to 15 nm formed from at least one metal oxide selected from the group of metals consisting of Al, Ti, Zr and sn. ! 3. The decorative substrate according to claim 1, characterized in that the optically modifying layer has a thickness of from 15 to 40 nm. ! 4. The decorative substrate according to claim 1, characterized in that the reflective layer has a thickness of 60 to 200 nm. ! 5. The decorative substrate according to claim 4, characterized in that the reflective layer has a thickness from 90 to 140 N