Patent ID: 9682592
Date: 2017-06-20
CPC Classifications: B23K,B41M,B42D,G02B

Claim:
1. A light control film having a plurality of micro light control structures formed in the film, and a first security feature formed in the micro light control structures, wherein the light control film is generally transparent or translucent at a first viewing angle, the first security feature is not visible when the light control film is viewed at the first viewing angle, and the first security feature is visible when the light control film is viewed at a first correct range of viewing angles, wherein the first security feature is formed in the micro light control structures at an angle that is different than the first viewing angle and wherein the angle is within the first correct range of viewing angles, and a second security feature formed in the micro light control structures, located in generally the same area and/or adjacent to the first security feature, wherein the second security feature is not visible when the light control film is viewed at the first viewing angle or the first correct range of viewing angles, and the second security feature is visible when the light control film is viewed at a second correct range of viewing angles, and wherein the second security feature is formed in the micro light control structures at an angle that is different than the first viewing angle and wherein the angle is within the second correct range of viewing angles.