Patents Examined by Huang Dang
  • Method and apparatus for making polarized sunglasses
    Patent number: 9128302
    Abstract: In the manufacture of gradient polarized sunglasses an optical retarder is used in front of a portion of a polarized lens to destroy the linear polarization of incoming light to render that portion of the sunglass lens non-polarized, thus to permit viewing of polarized displays through that non-polarized portion of the polarized sunglass lens.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: September 8, 2015
    Assignee: Distributed Polarization Inc.
    Inventors: Giorgio Trapani, Robert K. Tendler