| 摘要 |
Thin-film element with a multilayer structure, for security papers, and valuable documents, comprises at least two metallic layers, and at least one dielectric spacer layer arranged between the two metal layers, where the multilayer structure exhibits at least one nano-structured area in which the multilayer structure forms conical- or cone-like elevations. Independent claims are also included for: (1) a visible security element for security papers, and valuable documents, comprising a carrier and the thin-film element arranged on the carrier; (2) a data carrier comprising the thin-film element, where the thin-film element is arranged in or above a transparent window area, or a continuous opening of the data carrier; and (3) producing the thin-film element with multilayer structure for security papers, and valuable documents, exhibiting at least two metallic layers and at least one dielectric spacer layer arranged between two metallic layers, where the multilayer structure exhibits at least one nano-structured area in which the multilayer structure forming conical- or cone-like elevations are arranged aperiodically or periodically, and the multilayer structure exhibits at least one planar region, comprising (i) providing a substrate, whose surface exhibits at least one nano-structured area with conical- or cone-like elevations, which are arranged aperiodically or periodically, and contains at least one planar region, (ii) forming two metallic layers and at least one dielectric spacer layer, which is arranged between the two metallic layers, above the nano-structured region of the substrate surface and above the planar region of the substrate surface, by vapor deposition. |
