发明名称 Optically variable element with partial transparent element
摘要 An optically variable element, in particular an optically variable safeguard element for safeguarding banknotes, credit cards and the like, and a security product and a foil, in particular an embossing foil or a laminating foil, having such an optically variable element. The optically variable element has a thin film for producing color shifts by means of an interference and/or a reflective layer. The optically variable element further has a transparent window and the thin film and/or the reflective layer is respectively in the form of a partial element, namely a partial thin film element or a partial reflective element, wherein the partial element or elements surround the surface region of the transparent window.
申请公布号 US7929210(B2) 申请公布日期 2011.04.19
申请号 US20090386142 申请日期 2009.04.14
申请人 LEONHARD KURZ STIFTUNG & CO. KG 发明人 WILD HEINRICH;BREHM LUDWIG
分类号 G02B1/10;B42D15/10;B44F1/12;G02B5/18;G02B5/32 主分类号 G02B1/10
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