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    • 4. 发明公开
    • SICHERHEITSELEMENT FÜR EIN WERT- UND/ODER SICHERHEITSDOKUMENT
    • SICHERHEITSELEMENTFÜREIN WERT- UND / ODER SICHERHEITSDOKUMENT
    • EP2920004A1
    • 2015-09-23
    • EP13798963.8
    • 2013-11-15
    • Bundesdruckerei GmbH
    • GUTMANN, RolandMOMBRÉE, AlexanderKNEBEL, MichaelKUNATH, ChristianEHREKE, Jens
    • B44F1/10B42D25/387B42D25/30
    • B42D25/387B42D25/29B42D25/342B42D25/351B42D25/378
    • The present invention relates to a security element for a document of value and/or a security document which is arranged on a transparent layer, for example a film (1, 1'), wherein the security element has a first periodic, optical structure, for example a grid of lines (10, 30, 30') or a grid of points, which forms a first coating on the first side of the transparent layer, and a second periodic, optical structure, for example a grid of lines (20, 40, 40', 40'') or a grid of points, which forms a second coating on the second side, opposite from the first side of the transparent layer. In order to achieve better protection against copying, the first optical structure and the second optical structure are preferably arranged as overlapping in such a way that, when seen by an outside observer from a certain, predetermined viewing angle (α) or lighting angle, they show a colour-changing effect, wherein the first coating has a first colour and the second coating has at least one second colour that is different from the first colour.
    • 用于有价值文件的安全元件被布置在诸如胶片的透明层上,并且包括第一周期性光学结构,例如线的网格或点格网,其在第一侧上形成第一涂层 透明层和第二周期性光学结构,例如线形网格或点格栅,其在第二侧上形成与透明层的第一侧相对设置的第二涂层。 第一光学结构和第二光学结构重叠,使得由外部观察者以一定的预定视角(α)或照明角度观察,结构显示变色效果。