发明名称 |
Secure document, system for making same and system for reading said 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. |
申请公布号 |
AU6292700(A) |
申请公布日期 |
2001.01.30 |
申请号 |
AU20000062927 |
申请日期 |
2000.07.04 |
申请人 |
THOMSON CSF |
发明人 |
CECILE JOUBERT;BRIGITTE LOISEAUX;PHILIPPE ROBIN;CLAUDE BRICOT |
分类号 |
B42D15/10;G03H1/00;G03H1/04;G03H1/18;G06K7/12;G06K19/06;G06K19/16 |
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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