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1. (WO2001003945) DIFFRACTIVE SURFACES WITH COLOR SHIFTING BACKGROUNDS

Pub. No.:    WO/2001/003945    International Application No.:    PCT/US2000/010985
Publication Date: Fri Jan 19 00:59:59 CET 2001 International Filing Date: Sat Apr 22 01:59:59 CEST 2000
IPC: B42D 15/10
Applicants: FLEX PRODUCTS, INC.
Inventors: BONKOWSKI, Richard, L.
HIGGINS, Patrick, K.
MARKANTES, Charles, T.
PHILLIPS, Roger, W.
Title: DIFFRACTIVE SURFACES WITH COLOR SHIFTING BACKGROUNDS
Abstract:
A security article (10) includes a light transmissive substrate (14) having a first surface and an opposing second surface, with the first surface having an embossed region with an optical diffraction pattern or a holographic image pattern (15). A color shifting optical coating (16) is formed on the substrate such as on the opposing second surface, with the optical coating providing an observable color shift as the angle of incident light or viewing angle changes. The security article can be used in a variety of applications and products to provide for enhanced security measures such as anticounterfeiting.