Patents by Inventor D. Jason Kekas

D. Jason Kekas has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Bragg liquid crystal polarization gratings
    Patent number: 10859740
    Abstract: An optical element includes a plurality of stacked birefringent sublayers, such as liquid crystal sublayers, configured to alter a direction of propagation of light passing therethrough according to the Bragg condition. The stacked birefringent sublayers respectively include local optical axes that vary along respective interfaces between adjacent ones of the stacked birefringent sublayers to define respective grating periods. The respective thicknesses of the stacked birefringent sublayers may be less than a wavelength of the light. Related apparatus and methods of operation are also discussed.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: December 8, 2020
    Assignee: IMAGINEOPTIX CORPORATION
    Inventors: Michael J. Escuti, D. Jason Kekas, Ravi K. Komanduri
  • BRAGG LIQUID CRYSTAL POLARIZATION GRATINGS
    Publication number: 20160033698
    Abstract: An optical element includes a plurality of stacked birefringent sublayers, such as liquid crystal sublayers, configured to alter a direction of propagation of light passing therethrough according to the Bragg condition. The stacked birefringent sublayers respectively include local optical axes that vary along respective interfaces between adjacent ones of the stacked birefringent sublayers to define respective grating periods. The respective thicknesses of the stacked birefringent sublayers may be less than a wavelength of the light. Related apparatus and methods of operation are also discussed.
    Type: Application
    Filed: July 30, 2015
    Publication date: February 4, 2016
    Inventors: Michael J. Escuti, D. Jason Kekas, Ravi K. Komanduri