发明名称 |
THIN-LAYER ELEMENT HAVING AN INTERFERENCE LAYER STRUCTURE |
摘要 |
The invention relates to a thin-layer element (30) having an interference layer structure for security papers, valuable documents, and the like, comprising at least two semi-transparent absorber layers (34, 38) and at least one dielectric spacer layer (36) arranged between the at least two absorber layers. According to the invention, the two absorber layers (34, 38) are each composed of a material having a complex refractive index N, the real part n and imaginary part k of which differ by a factor of 5 or greater at least in part of the visible spectral range. Said material is, e.g., silver (Ag) or aluminum (Al). |
申请公布号 |
WO2011032665(A1) |
申请公布日期 |
2011.03.24 |
申请号 |
WO2010EP05563 |
申请日期 |
2010.09.10 |
申请人 |
GIESECKE & DEVRIENT GMBH;FUHSE, CHRISTIAN;RAHM, MICHAEL;HEIM, MANFRED;LIEBLER, RALF |
发明人 |
FUHSE, CHRISTIAN;RAHM, MICHAEL;HEIM, MANFRED;LIEBLER, RALF |
分类号 |
B42D15/00;G02B5/28 |
主分类号 |
B42D15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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