Patents by Inventor Tamer T. Elazhary

Tamer T. Elazhary 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).

  • Catadioptric optical system with multi-reflection element for high numerical aperture imaging
    Patent number: 9329373
    Abstract: A catadioptric system includes a first catadioptric group, a second catadioptric group, and a lens group disposed in axial alignment with each other. The first catadioptric group includes a solid lens having an input surface, a primary reflective surface, secondary reflective surface and an exit surface. The primary reflective surface is a curved surface concave towards the secondary reflective surface. A light flux entering through the input surface undergoes more than two reflections between the primary and secondary reflective surfaces, prior to exiting through the exit surface. At least one of the primary reflective surface and secondary reflective surface has a continuous and smooth topological profile.
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: May 3, 2016
    Assignees: Canon Kabushiki Kaisha, The Arizona Board of Regents on Behalf of the University of Arizona
    Inventors: Masatsugu Nakano, Jose Manuel Sasian-Alvarado, Tamer T. Elazhary
  • CATADIOPTRIC OPTICAL SYSTEM WITH MULTI-REFLECTION ELEMENT FOR HIGH NUMERICAL APERTURE IMAGING
    Publication number: 20140226203
    Abstract: A catadioptric system includes a first catadioptric group, a second catadioptric group, and a lens group disposed in axial alignment with each other. The first catadioptric group includes a solid lens having an input surface, a primary reflective surface, secondary reflective surface and an exit surface. The primary reflective surface is a curved surface concave towards the secondary reflective surface. A light flux entering through the input surface undergoes more than two reflections between the primary and secondary reflective surfaces, prior to exiting through the exit surface. At least one of the primary reflective surface and secondary reflective surface has a continuous and smooth topological profile.
    Type: Application
    Filed: February 13, 2013
    Publication date: August 14, 2014
    Applicants: The Arizona Board of Regents on behalf of the University of Arizona, CANON KABUSHIKI KAISHA
    Inventors: Masatsugu Nakano, Jose Manuel Sasian-Alvarado, Tamer T. Elazhary