发明名称 Film and optical anti-counterfeiting element
摘要 The invention concerns a film, in particular an embossing film, a laminating film or a sticker film, and an optical security element. The film has a carrier layer and a replication layer. The film also has a layer of a liquid crystal material, which is applied to the replication layer. A diffractive structure is embossed into the surface of the replication layer, which is towards the layer of a liquid crystal material, for orientation of the liquid crystal material, said diffractive structure having at least two partial regions with different directions of orientation of the embossed structure.
申请公布号 US7511796(B2) 申请公布日期 2009.03.31
申请号 US20050553372 申请日期 2005.10.17
申请人 LEONHARD KURZ GMBH & CO. KG 发明人 KATSCHOREK HAYMO;SEITZ MATHIAS
分类号 G02F1/13;B42D15/00;B42D15/10;G02B5/30;G02F1/1337;G03H1/02;G03H1/04;G07D7/12 主分类号 G02F1/13
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