Product security pattern based on simultaneous color contrast

摘要

A product package article has an HVS-perceivable security pattern on its surface. The security pattern is based on simultaneous color contrast. The security pattern can provide protection against counterfeiting.

主权项

1. A product package article comprising
a first HVS-perceivable security pattern applied onto a surface of the article and a second HVS-perceivable security pattern applied onto a surface of the article, wherein the first and second HVS perceivable security patterns are based on simultaneous color contrast, wherein the first and second security patterns have backgrounds of different colors and foreground objects of the same color to increase simultaneous color contrast effects, where the foreground and background colors of each security pattern have different contrast levels to create an illusion that the foreground objects are of different colors; and an anti-scan pattern applied onto the surface of the article, wherein the anti-scan pattern is not perceivable by the HVS.