发明名称 |
UNIQUE SECURITY DEVICE FOR THE IDENTIFICATION OR AUTHENTICATION OF VALUABLE GOODS, FABRICATION PROCESS AND METHOD FOR SECURING VALUABLE GOODS USING SUCH A UNIQUE SECURITY DEVICE |
摘要 |
A security device for the identification or authentication of valuable goods is described, comprising a thin material layer (22, 26) presenting a stochastic pattern of micro/submicrostructures, where the latter are arranged in blobs (2) each of which presents a complexity factor
where L is the perimeter of the blob and A its area, and wherein blobs having a Cx value greater than or equal to 2 cover at least 5%, preferably at least 15%, of the device surface. According to a preferred embodiment, the material layer may include a film comprising at least a first and a second polymers arranged respectively within a first and a second phases defining the micro/submicrostructures. Preferred processes of fabrication are also disclosed, as well as a method for securing a valuable good based on such a security device. |
申请公布号 |
EP2142380(A2) |
申请公布日期 |
2010.01.13 |
申请号 |
EP20080750128 |
申请日期 |
2008.05.07 |
申请人 |
CSEM CENTRE SUISSE D'ELECTRONIQUE ET DE MICROTECHNIQUE SA - RECHERCHE ET DEVELOPPEMENT |
发明人 |
BLONDIAUX, NICOLAS;HASLER, DAVID;PUGIN, RAPHAEL;FRANZI, EDOARDO |
分类号 |
B42D15/10;G06K9/00 |
主分类号 |
B42D15/10 |
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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