Patents by Inventor Rizwan Parvez

Rizwan Parvez 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).

  • Methods and apparatus for optical path length equalization in an optical cavity
    Patent number: 11307395
    Abstract: Method and apparatus to maintain a resonant condition of an optical cavity such that the optical path length through the optical cavity is independent or minimally dependent on the angle of incidence of a received optical signal are disclosed. A material within the optical cavity has an index of refraction that varies as a function of an angle of propagation of light within the material, thereby achieving the independence of the optical path length and the angle of incidence. The resonant condition is maintained over a range of angles of incidence of the received optical signal.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: April 19, 2022
    Assignee: RAYTHEON COMPANY
    Inventors: Andrew Kowalevicz, Benjamin P. Dolgin, Gary M. Graceffo, Paul Searcy, Rizwan Parvez
  • METHODS AND APPARATUS FOR OPTICAL PATH LENGTH EQUALIZATION IN AN OPTICAL CAVITY
    Publication number: 20200371328
    Abstract: Method and apparatus to maintain a resonant condition of an optical cavity such that the optical path length through the optical cavity is independent or minimally dependent on the angle of incidence of a received optical signal are disclosed. A material within the optical cavity has an index of refraction that varies as a function of an angle of propagation of light within the material, thereby achieving the independence of the optical path length and the angle of incidence. The resonant condition is maintained over a range of angles of incidence of the received optical signal.
    Type: Application
    Filed: May 22, 2020
    Publication date: November 26, 2020
    Inventors: Andrew Kowalevicz, Benjamin P. Dolgin, Gary M. Graceffo, Paul Searcy, Rizwan Parvez