Item with an optical effect

Details Item with an optical effect Item with an optical effect

G - Physics

02

B

G02B 27/60 (2006.01)

Patent

CA 2559837

An item with a surface area creating an optical effect to increase protection against forgery is such that the surface area with the optical effect exhibits at least two images (12, 14) spaced a distance (d) apart. A first image (12) is situated on the surface (11) of a layer of material (10) and the second image (14) is virtual and, by holographic coding, appears to lie a distance (d) from the first image (12). By changing the angle of viewing, the optical perception of the whole image formed by the overlapping of the images (12, 14) changes, whereby the images (12, 14) are matched with respect to each other such that they demonstrate Moiré interference effects. A preferred application for the item is packaging, packaging material, packaging aids, bonds or entry tickets with forgery-proof and / or optically demanding surface area.

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