Patents by Inventor Jeff Tharp

Jeff Tharp 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).

  • Elliptical polarizers, tags and identification systems using frequency selective surfaces
    Patent number: 7629569
    Abstract: An optical combination includes a substrate, a linear polarizer on the substrate, and a first frequency selective surface (FSS) based elliptical polarization filter on the linear polarizer. The first FSS comprises at least one periodic pattern of spaced apart electrically conductive lines having a sub-wavelength line-to-line spacing orientated along a first axis. The pattern is operable to impose a phase differential for one orthogonal linear polarization state relative to the other linear polarization state for electromagnetic radiation having a wavelength between 400 nm and 1 mm, such as 1 ?m to 12 ?m. An identification system and associated method for identifying objects includes at least one tag having encoded information attached to the surface of an object to be identified, wherein the tag includes a first FSS-based elliptical polarization filter which provides the encoding.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: December 8, 2009
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventors: Jeff Tharp, Glenn Boreman, Daniel E. Mullally
  • ELLIPTICAL POLARIZERS, TAGS AND IDENTIFICATION SYSTEMS USING FREQUENCY SELECTIVE SURFACES
    Publication number: 20090121014
    Abstract: An optical combination includes a substrate, a linear polarizer on the substrate, and a first frequency selective surface (FSS) based elliptical polarization filter on the linear polarizer. The first FSS comprises at least one periodic pattern of spaced apart electrically conductive lines having a sub-wavelength line-to-line spacing orientated along a first axis. The pattern is operable to impose a phase differential for one orthogonal linear polarization state relative to the other linear polarization state for electromagnetic radiation having a wavelength between 400 nm and 1 mm, such as 1 ?m to 12 ?m. An identification system and associated method for identifying objects includes at least one tag having encoded information attached to the surface of an object to be identified, wherein the tag includes a first FSS-based elliptical polarization filter which provides the encoding.
    Type: Application
    Filed: May 28, 2008
    Publication date: May 14, 2009
    Applicant: University of Central Florida Research Foundation, Inc.
    Inventors: Jeff Tharp, Glenn Boreman, Daniel E. Mullally