Patents by Inventor Karlton Crabtree

Karlton Crabtree 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).

  • Polarization coupling cube-corner retro-reflectors
    Patent number: 8421711
    Abstract: A cube corner retro-reflector that includes three mutually perpendicular reflecting planes arranged in a pyramidal configuration, wherein at least one of the reflecting planes has a non-isotropic surface causing a polarization state of a ray exiting the cube corner retro-reflector to be orthogonal or substantively orthogonal to a polarization state of a ray entering the cube corner retro-reflector for all linear polarization orientations.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: April 16, 2013
    Assignee: The Arizona Board of Regents on Behalf of the University of Arizona
    Inventors: Russell A. Chipman, Karlton Crabtree
  • POLARIZATION COUPLING CUBE-CORNER RETRO-REFLECTORS
    Publication number: 20090219618
    Abstract: A cube corner retro-reflector that includes three mutually perpendicular reflecting planes arranged in a pyramidal configuration, wherein at least one of the reflecting planes has a non-isotropic surface causing a polarization state of a ray exiting the cube corner retro-reflector to be orthogonal or substantively orthogonal to a polarization state of a ray entering the cube corner retro-reflector for all linear polarization orientations.
    Type: Application
    Filed: November 1, 2006
    Publication date: September 3, 2009
    Applicant: The Arizona BD of Reg on Behalf of the Univ of AZ
    Inventors: Russell A. Chipman, Karlton Crabtree
  • Radiation source with self-aligning optics
    Patent number: 7567391
    Abstract: A radiation source has a radiation-emitter assembly disposed, at least in part, in a first compartment of a housing. A lens system is disposed in a second compartment of the housing so that the lens system is optically coupled to the radiation-emitter assembly. A mirror is disposed in a third compartment of the housing so that the mirror is optically coupled to the lens system. A filter and a conduit are disposed in a fourth compartment of the housing so that the filter and an aperture provided by the conduit are optically coupled to the mirror. Radiation exits the radiation source through the aperture.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: July 28, 2009
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Lester D. Strauch, III, Richard J. Kreis, Russell Chipman, Karlton Crabtree