发明名称 |
Article, especially valuable and security document, comprising a security feature |
摘要 |
A value or security document (2) contains a security feature (4) in the form of a film laser with an emitter layer (12) and preferably a protective layer (14). A spatial, periodic modulation (8), preferably of the surface of a substrate, permits fine adjustment of a laser wavelength within a range of possible wavelengths. This permits a coding of the security feature by different portions of different wavelengths.
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申请公布号 |
US7648074(B2) |
申请公布日期 |
2010.01.19 |
申请号 |
US20040495654 |
申请日期 |
2004.10.12 |
申请人 |
GIESECKE & DEVRIENT GMBH |
发明人 |
ATTENBERGER THOMAS;DECKENBACH WOLFGANG;HOPPE RAINER |
分类号 |
G06K19/06;B42D15/00;G07D7/12;H01S3/05;H01S3/063 |
主分类号 |
G06K19/06 |
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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