Patent ID: 9234992
Filing Date: 2016-01-12
CPC Classification: B42D,G02B

Claim Text:
1. A method of creating a security device having at least one optically variable device with diffraction-based micro-optics, the method comprising: originating a master of said optically variable device, said master including a diffractive structure; generating an object layer including at least one micro-object; replicating said master; and converting said master into final form to provide said optically variable device; wherein said converting step includes combining said object layer and said diffractive structure on a first portion and a second portion, respectively, of a substrate; wherein at least one magnified visual representation of said micro-object is observed when said optically variable device is observed from a predetermined relative observation point and said micro-object is disposed between said diffractive structure and said observation point; and wherein the diffractive structure is structured to provide an optical effect of magnifying the at least one micro-object to create the at least one magnified visual representation: and wherein the substrate is disposed between the diffractive structure and the at least one micro-object.