Patterned optical structures with enhanced security feature

Details Patterned optical structures with enhanced security feature Patterned optical structures with enhanced security feature

2011-01-25

2011-01-25

Amari, Alessandro (Department: 2872)

Optical: systems and elements

Holographic system or element

Authentication

C283S085000

Reexamination Certificate

active

07876481

ABSTRACT:
A security image and method for forming said image is disclosed wherein an image having a layer with a hologram therein has an additional layer of magnetically aligned flakes together forming an image that is difficult to counterfeit and is highly attractive. Preferably windows of an opaque layer provide additional means of encoding or forming the image.

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