发明名称 |
Secured document, system for manufacturing same and system for reading this document |
摘要 |
A document includes at least one drawing or data produced, for example, by printing. In addition, this document includes a hologram representing part of the document. The hologram of this document is recorded using a system including a prerecorded or electrically controllable optical modulator in which the image of at least part of the document is recorded. This modulator is designed to be combined with a layer of photosensitive material. A first reference wave illuminates the layer of photosensitive material. A second wave incident on the modulator and giving rise to a third object wave is also transmitted to the layer of photosensitive material in order to interfere with the reference wave in this layer.
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申请公布号 |
US6980336(B2) |
申请公布日期 |
2005.12.27 |
申请号 |
US20040971136 |
申请日期 |
2004.10.25 |
申请人 |
THALES |
发明人 |
JOUBERT CECILE;LOISEAUX BRIGITTE;ROBIN PHILIPPE;BRICOT CLAUDE |
分类号 |
B42D15/10;G03H1/00;G03H1/04;G03H1/18;G06K7/12;G06K19/06;G06K19/16;(IPC1-7):G03H1/00 |
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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