Object with an optical effect

B - Operations – Transporting – 42 – D

Patent

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Details

B42D 15/10 (2006.01) B42D 15/00 (2006.01) G02B 27/60 (2006.01)

Patent

CA 2335239

An object with a surface area creating an optical effect is such that the surface area with the optical effect exhibits at least two images (12, 14) separated a distance (d) from each other by means of a transparent layer of material (10). The distance (d) between the images (12, 14) and the distance (a) between two neighbouring elements (16) forming the images (12, 14) are adjusted with respect to each other such that on altering the viewing angle (.alpha.), the perceived overall image formed by the overlapping of the images (12, 14) is altered. A preferred application for the object lies in forms of packaging, packaging material, an aid to packaging, bonds or entry tickets with counterfeit-proof surface area and/or surface areas that have to meet high demands.

L'invention concerne un objet comportant une zone superficielle produisant un effet optique. Cette zone superficielle à effet optique présente au moins deux motifs (12, 14) maintenus à distance (t) l'un de l'autre par une couche de matière transparente (10). La distance (d) séparant les motifs (12, 14) et la distance (a) séparant deux éléments d'image (16) à l'origine de la formation des motifs (12, 14) sont mutuellement adaptées de telle sorte qu'en cas de modification de l'angle d'observation ( alpha ), la perception optique de l'image complète produite par superposition des motifs (12, 14) se modifie. Un mode de réalisation préférentiel de cet objet se présente sous la forme d'un emballage, d'un matériau d'emballage, d'un moyen auxiliaire d'emballage, d'un papier-valeur ou d'une carte d'entrée présentant une zone superficielle ne pouvant pas subir de falsifications et/ou optiquement sensible.

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