G - Physics – 06 – K
Patent
G - Physics
06
K
G06K 19/08 (2006.01) B42D 15/10 (2006.01) G06K 19/10 (2006.01) G06K 19/14 (2006.01) G06K 19/16 (2006.01) G06K 19/18 (2006.01)
Patent
CA 2417795
The invention relates to an optically active microstructure for data carriers of all types in which irreversible changes (items of information) are written into at least one of several stacked films of the data carrier using a laser beam, and the items of information have, from different visual angles to the data carrier, a different information content (tilt or wiggle image). The microstructure (1) is comprised of approximately strip-shaped adjoining regions (6, 7), which are parallel to one another, and which are both transparent. One region (7) supports a diffraction structure, and the other region (6) is not provided with a diffraction structure, and the items of information to be read out are arranged in regions (8, 9) located underneath the microstructure (1).
La présente invention concerne une microstructure à effet optique destinée à des supports de données de tous types, des variations irréversibles (informations) étant inscrites, au moyen d'un rayon laser, dans au moins l'une des différentes couches superposées du support de données, et les informations présentant, selon différents angles d'observation du support de données, un contenu d'informations différent (image à faire pivoter ou osciller). La microstructure (1) est constituée de zones (6, 7) adjacentes, parallèles entre elles, approximativement en forme de bandes, qui sont toutes deux transparentes, l'une des zones (7) portant une structure de diffraction, et l'autre zone (6) étant dépourvue de structure de diffraction, et les informations à lire étant disposées dans les zones (8, 9) en-dessous de la microstructure (1).
Hecker Hermann
Hochenbleicher Gerhard
Kappe Frank
Kley Ernst-Bernhard
Paeschke Manfred
Bundesdruckerei Gmbh
Gowling Lafleur Henderson Llp
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