Patents by Inventor David J. Rabb

David J. Rabb 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).

  • Patent number: 10274377
    Abstract: A ladar device that has a linear frequency-modulated laser source that produces a primary beam. An optical shear generator spectrally shears the primary beam into no less than three sensing beams. An optical output delivers at least one of the sensing beams toward a target. The sensing beams reflect from the target to produce reflected beams. An optical receiver receives the reflected beams and produces reflected beam signals corresponding to characteristics of the reflected beams. A processor receives the reflected beam signals and produces a deviation matrix, without the use of a local oscillator. The deviation matrix is used to produce a reconstruction of the target, which is output on an electrical signal output.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: April 30, 2019
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: David J. Rabb, Jason W. Stafford
  • Patent number: 7911671
    Abstract: An true time delay in optical signals using a Fourier cell is provided. One embodiment includes: an input array for inputting an array of light beams; at least a portion of a lens; a plurality of micromirrors located at a distance away from the lens that is approximately equal to the focal length of the lens; one or more mirrors located at a distance away from the lens that is approximately equal to the focal length of the lens; and one or more delay blocks, at least a portion of which are located at a distance away from the lens that is approximately equal to the focal length of the lens. The micromirrors may include a plurality of individually controllable pixels for directing one or more light beams in the array of light beams through the lens and onto either a mirror or a delay block.
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: March 22, 2011
    Assignee: The Ohio State University
    Inventor: David J. Rabb
  • Patent number: 7630598
    Abstract: An optical cross-connect for shifting the location of one or more light beams in and array of light beams is provided. An exemplary embodiment of an optical cross connect includes an input array for inputting an array of light beams; at least a portion of a spherical lens; a plurality of microelectrical mechanical devices; and a plurality of mirrors. The microelectrical mechanical devices are located at a distance away from the spherical lens that is approximately equal to the focal point of the spherical lens. The microelectrical mechanical devices include a plurality of individually controllable pixels for directing one or more light beams in the array of light beams through the at least a portion of a spherical lens and onto two or more mirrors. The two or more mirrors may be located at a distance away from the spherical lens that is approximately equal to the focal point of the spherical lens and are located generally opposite of one or more microelectrical mechanical devices.
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: December 8, 2009
    Assignee: The Ohio State University
    Inventors: Betty Lise Anderson, David J. Rabb
  • Publication number: 20090015899
    Abstract: An true time delay in optical signals using a Fourier cell is provided. One embodiment includes: an input array for inputting an array of light beams; at least a portion of a lens; a plurality of micromirrors located at a distance away from the lens that is approximately equal to the focal length of the lens; one or more mirrors located at a distance away from the lens that is approximately equal to the focal length of the lens; and one or more delay blocks, at least a portion of which are located at a distance away from the lens that is approximately equal to the focal length of the lens. The micromirrors may include a plurality of individually controllable pixels for directing one or more light beams in the array of light beams through the lens and onto either a mirror or a delay block.
    Type: Application
    Filed: May 8, 2007
    Publication date: January 15, 2009
    Inventor: David J. Rabb
  • Publication number: 20070263958
    Abstract: An optical cross-connect for shifting the location of one or more light beams in and array of light beams is provided. An exemplary embodiment of an optical cross connect includes an input array for inputting an array of light beams; at least a portion of a spherical lens; a plurality of microelectrical mechanical devices; and a plurality of mirrors. The microelectrical mechanical devices are located at a distance away from the spherical lens that is approximately equal to the focal point of the spherical lens. The microelectrical mechanical devices include a plurality of individually controllable pixels for directing one or more light beams in the array of light beams through the at least a portion of a spherical lens and onto two or more mirrors. The two or more mirrors may be located at a distance away from the spherical lens that is approximately equal to the focal point of the spherical lens and are located generally opposite of one or more microelectrical mechanical devices.
    Type: Application
    Filed: May 8, 2007
    Publication date: November 15, 2007
    Inventors: Betty Lise Anderson, David J. Rabb