Preserved and enhanced holographic and optically variable...

Details Preserved and enhanced holographic and optically variable... Preserved and enhanced holographic and optically variable...

G - Physics

03

H

G03H 1/02 (2006.01) B42D 15/10 (2006.01)

Patent

CA 2589364

An optically variable device (10, 30, 50) has a substrate (12, 32) with an optically variable relief (16, 36) and a coating (18, 38) on the optically variable relief . The coating is applied as a liquid dispersion including a plurality of optical enhancer particles (20, 38) in a solvent.

L'invention concerne un dispositif optiquement variable (10, 30, 50), qui comprend un substrat (12, 32) présentant un relief optiquement variable (16, 36) sur lequel un revêtement (18, 38) est disposé. Le revêtement est appliqué sous forme de dispersion liquide comprenant une pluralité de particules activatrices optiques (20, 38) dans un solvant.

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