Patent ID: 7005178

Claim:
A security article comprising: a light transmissive substrate having a first surface and an opposing second surface, said first surface having a diffraction grating pattern or a holographic image pattern formed thereon; and a color-shifting multilayer optical film structure formed on said diffraction grating pattern or said holographic image pattern formed on said first surface of said light transmissive substrate, so as to conform to the shape thereof, said color-shifting multilayer optical film structure being defined by an optical absorber layer formed directly on said diffraction grating pattern or said holographic image pattern formed on said first surface of said light transmissive substrate, a dielectric layer formed directly on said optical absorber layer, and a reflector layer formed directly on said dielectric layer and having a first surface thereof opposite a second surface thereof formed directly on said dielectric layer, said first surface of said reflector layer replicating said diffraction pattern or said holographic image pattern formed on said first surface of said light transmissive substrate; and wherein said color-shifting multilayer optical film structure provides color shifting with change of viewing angle or angle of incident light.