发明名称 OPTICALLY VARIABLE ELEMENT COMPRISING A PARTIALLY TRANSPARENT ELEMENT
摘要 <p>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.</p>
申请公布号 EP1503906(B1) 申请公布日期 2011.11.23
申请号 EP20030718768 申请日期 2003.04.17
申请人 LEONHARD KURZ STIFTUNG & CO. KG 发明人 WILD, HEINRICH;BREHM, LUDWIG
分类号 B42D25/21;B41M3/14;G02B5/18;G02B5/32;G07D7/12 主分类号 B42D25/21
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