Security document

Details Security document Security document

B - Operations, Transporting

42

D

B42D 15/10 (2006.01) B42D 15/00 (2006.01)

Patent

CA 2611195

The invention relates to a security document with a transparent security element (12) with a structural layer arranged in a window or in a transparent section of the security document, a first section (12f) of the structural layer comprising an asymmetrical diffractive relief structure, the first section (12f) having an unexpectedly different optical effect when the security document is viewed from the front and from the back.

L'invention concerne un document de sécurité comportant, dans une fenêtre ou dans une zone transparente, un élément de sécurité (12) transparent pourvu d'une couche structurée. Une première zone (12f) de la couche structurée a une structure en relief de diffraction asymétrique et elle (12f) présente, au recto et au verso du document de sécurité, un effet optique différent et inattendu.

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