Secure document, system for making same and system for...

G - Physics – 03 – H

Patent

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Details

G03H 1/04 (2006.01) B42D 15/10 (2006.01) G06K 7/12 (2006.01) G06K 19/06 (2006.01) G06K 19/16 (2006.01)

Patent

CA 2378658

The invention concerns a document comprising at least a drawing or an information produced, for example, by printing. Said document further comprises a hologram representing part of the document. The hologram of the document is recorded by a system comprising a pre-recorded or electrically controllable optical modulator (23) wherein is recorded the image of part at least of the document. Said modulator is designed to be associated with a photosensitive material film (21). A first reference wave (R) illuminates the photosensitive material film. A second incident wave (I) on said modulator (23) and producing a third object wave (O) is also transmitted with the photosensitive material film to interfere in said film with the reference wave (R).

L'invention concerne un document comportant au moins un dessin ou une information réalisé, par exemple, par impression. Ce document comporte en outre un hologramme représentant une partie du document. L'hologramme de ce document est enregistré à l'aide d'un système comportant un modulateur optique (23) préenregistré ou commandable électriquement dans lequel est enregistrée l'image d'une partie au moins du document. Ce modulateur est prévu pour être associé à une couche de matériau photosensible (21). Une première onde de référence (R) éclaire la couche de matériau photosensible. Une deuxième onde incidente (I) sur ledit modulateur (23) et donnant lieu à une troisième onde objet (O) est également transmise à la couche de matériau photosensible pour interférer dans cette couche avec l'onde de référence (R).

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