Patents Assigned to OPTHENTIC CORP.
  • Optical security device and system and fabrication methods thereof
    Patent number: 9789724
    Abstract: The present invention relates generally to an optical security device and an optical security system in which hidden images that are invisible to the naked eye under unpolarized illumination, become visible under either linearly or circularly polarized illumination. Preferred fabrication methods of said optical security device are disclosed.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: October 17, 2017
    Assignee: OPTHENTIC CORP.
    Inventors: Yingqiu Jiang, Aharon Hochbaum