Patent ID: 7675662
Filing Date: 2010-03-09
Classification: B42D,G02B,G03H,G11B,Y10S

Abstract:
1. A device for limiting the reproductibility of information, comprising: a substrate; and a holographic element coupled to the substrate, the holographic element including a first set of optical information perceived in a first planar area and a second set of optical information in a coded pattern perceived in a plurality of planar areas, wherein a first portion of the coded pattern is located in a second planar area and a second portion of the coded pattern is located in a third planar area and wherein the central point of the first planar area is offset from the central point of the second planar area by a predetermined distance and wherein at least one of the first portion and the second portion of the coded pattern is obscured from visual inspection from a predetermined point of view by the first set of optical information.