Optical images

G - Physics – 02 – B

Patent

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Details

G02B 27/02 (2006.01) B42D 15/10 (2006.01) G02B 5/32 (2006.01) G02B 27/22 (2006.01) G09F 19/14 (2006.01)

Patent

CA 2270882

A substrate is arranged to provide at least one optically variable image, the substrate being formed with a plurality of groups of elemental areas, the different groups forming respective image pixels. The different elemental areas (A1 to An) of each group are formed with respective grooves or ridges or sets of grooves or ridges (121 to 12n), which are at different orientations in the different elemental areas such that each elemental area of each pixel directs light to the viewer for a respective angle of view: for any given angle of view, the image seen by the viewer is made up of light reflected or refracted without interference from the different pixels, but only from a respective elemental area of each pixel.

Un substrat est conçu pour produire au moins une image opto-variable et constitué de plusieurs groupes de points d'exploration, lesdits différents groupes formant des pixels d'image respectifs. Les différents points d'exploration (A¿1? à A¿n?) de chaque groupe sont formés de sillons ou d'arêtes respectifs ou de réseaux de sillons ou d'arêtes (12¿1? à 12¿n?), lesquels ont des orientations différentes dans les différents points d'exploration, de sorte que chaque point d'exploration de chaque pixel dirige de la lumière vers l'observateur pour un angle de vue respectif. Pour un quelconque angle de vue donné, l'image perçue par l'observateur est constituée d'une lumière réfléchie ou réfractée, sans interférence, émanant des différents pixels, mais émanant uniquement d'un point d'exploration respectif de chaque pixel.

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