Patents by Inventor Todd E. Sessler

Todd E. Sessler 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: 8610062
    Abstract: An apparatus for multi-spectral imaging includes a microbolometer array comprising a two-dimensional array of microbolometer detectors that are configured to respond to energy having a first range of wavelengths comprising a first plurality of spectral bands. The apparatus also includes a wideband window configured to allow energy having a second range of wavelengths to reach the microbolometer array. The second range of wavelengths comprises a second plurality of spectral bands. The apparatus additionally includes optics configured to focus the energy from a scene towards the microbolometer array. The apparatus further includes a processor configured to generate an output based on a response of the microbolometer array to energy having a third range of wavelengths comprising a third plurality of spectral bands. There is substantial overlap between the first, second, and third range of wavelengths and the first, second, and third plurality of spectral bands.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: December 17, 2013
    Assignee: Raytheon Company
    Inventors: Matthew Jonas, Todd E. Sessler, John F. McGee, III, Alan R. Levy
  • Publication number: 20120241614
    Abstract: An apparatus for multi-spectral imaging includes a microbolometer array comprising a two-dimensional array of microbolometer detectors that are configured to respond to energy having a first range of wavelengths comprising a first plurality of spectral bands. The apparatus also includes a wideband window configured to allow energy having a second range of wavelengths to reach the microbolometer array. The second range of wavelengths comprises a second plurality of spectral bands. The apparatus additionally includes optics configured to focus the energy from a scene towards the microbolometer array. The apparatus further includes a processor configured to generate an output based on a response of the microbolometer array to energy having a third range of wavelengths comprising a third plurality of spectral bands. There is substantial overlap between the first, second, and third range of wavelengths and the first, second, and third plurality of spectral bands.
    Type: Application
    Filed: March 24, 2011
    Publication date: September 27, 2012
    Applicant: Raytheon Company
    Inventors: Matthew Jonas, Todd E. Sessler, John F. McGee, III, Alan R. Levy
  • Patent number: 8124937
    Abstract: A method includes determining a signal current based on an average current associated with one or more detectors. The method also includes determining a strip voltage based on the signal current. The method further includes biasing a strip resistance with the strip voltage. The biasing of the strip resistance creates a strip current. The method additionally includes biasing a detector array with a detector voltage. The biasing of the detector array creates a detector current. The method also includes determining levels of incident radiation from a scene based on the strip current and the detector current.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: February 28, 2012
    Assignee: Raytheon Company
    Inventors: Todd E. Sessler, Matthew T. Kuiken, Robert M. Stokes, William M. Bowser
  • Publication number: 20100176305
    Abstract: A method includes determining a signal current based on an average current associated with one or more detectors. The method also includes determining a strip voltage based on the signal current. The method further includes biasing a strip resistance with the strip voltage. The biasing of the strip resistance creates a strip current. The method additionally includes biasing a detector array with a detector voltage. The biasing of the detector array creates a detector current. The method also includes determining levels of incident radiation from a scene based on the strip current and the detector current.
    Type: Application
    Filed: January 15, 2009
    Publication date: July 15, 2010
    Applicant: Raytheon Company
    Inventors: Todd E. Sessler, Matthew T. Kuiken, Robert M. Stokes, William M. Bowser
  • Patent number: 5149954
    Abstract: Method and apparatus for performing a TDI function with a plurality of electrical signals. A first step of the method stores, during individual ones of a first plurality of consecutive time intervals, a sample of a first electrical signal. A second step of the method equilibrates, during individual ones of a second, subsequent plurality of time intervals, one of the stored samples with a stored sample of a second electrical signal. Subsequent to each of the steps of equilibrating, an electrical signal is outputted that has a magnitude expressive of the equilibrated stored samples. The equilibration is achieved by shorting storage capacitors (C.sub.1, C.sub.2, C.sub.3) together to effectively sum coherent signals and incoherent noise. The charge sum is stored on a capacitance that is effectively doubled from either detector channel operating individually.
    Type: Grant
    Filed: March 26, 1991
    Date of Patent: September 22, 1992
    Assignee: Santa Barbara Research Center
    Inventors: Kevin L. Pettijohn, Todd E. Sessler, John A. Stineman