Patents by Inventor Kenneth E. Kreischer

Kenneth E. Kreischer 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).

  • Electro-optic crystal, diffraction-based, beam-steering element
    Patent number: 7557979
    Abstract: A beam-steering element made of a more optically-active material, potassium tantalate niobate, with an improved diffraction efficiency, having a plurality of electrode layers and one electro-optic crystal layer interposed between every two adjacent electrode layers. Each electro-optic crystal layer and the electrode layer adjacent thereto have an aspect ratio of about 1:1. The electrode layers and the electro-optic crystal layers are interposed between two substrates. Preferably, the substrates are transparent to an incoming beam to be modulated by the electro-optic crystal layer.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: July 7, 2009
    Assignee: Northrop Grumman Corporation
    Inventors: James M. Cicchiello, Curtis J. Harkrider, Kenneth E. Kreischer, David A. Gallagher
  • Electro-optic crystal, diffraction-based, beam-steering element
    Publication number: 20080259435
    Abstract: A beam-steering element made of a more optically-active material, potassium tantalate niobate, with an improved diffraction efficiency, having a plurality of electrode layers and one electro-optic crystal layer interposed between every two adjacent electrode layers. Each electro-optic crystal layer and the electrode layer adjacent thereto have an aspect ratio of about 1:1. The electrode layers and the electro-optic crystal layers are interposed between two substrates. Preferably, the substrates are transparent to an incoming beam to be modulated by the electro-optic crystal layer.
    Type: Application
    Filed: August 6, 2007
    Publication date: October 23, 2008
    Inventors: James M. Cicchiello, Curtis J. Harkrider, Kenneth E. Kreischer, David A. Gallagher
  • Electro-optic crystal, diffraction-based, beam-steering element
    Patent number: 7411724
    Abstract: A beam-steering element made of a more optically-active material, potassium tantalate niobate, with an improved diffraction efficiency, having a plurality of electrode layers and one electro-optic crystal layer interposed between every two adjacent electrode layers. Each electro-optic crystal layer and the electrode layer adjacent thereto have an aspect ratio of about 1:1. The electrode layers and the electro-optic crystal layers are interposed between two substrates. Preferably, the substrates are transparent to an incoming beam to be modulated by the electro-optic crystal layer.
    Type: Grant
    Filed: December 6, 2004
    Date of Patent: August 12, 2008
    Assignee: Northrop Grumman Corporation
    Inventors: James M. Cicchiello, Curtis J. Harkrider, Kenneth E. Kreischer, David A. Gallagher