Patent ID: 9561682
Date: 2017-02-07
CPC Classifications: B42D,C09C,G02B,Y10T

Claim:
1. A color shifting security device comprising: a first absorbing or reflecting layer having a microstructured upper surface; a second absorbing or reflecting layer; and an infill dielectric non-conforming layer, filling in grooves within the microstructured upper surface, having a surface contacting and complementary with the microstructured upper surface, and disposed between the first absorbing or reflecting layer and the second absorbing or reflecting layer, wherein at least one of the first or second absorbing or reflecting layers is an absorbing layer, and wherein a cross section of the infill dielectric non-conforming layer has a varying thickness such that at least one region is substantially thicker than a thinner adjacent region of the infill dielectric non-conforming layer.