Patents by Inventor Gene Raymond Loefer

Gene Raymond Loefer 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).

  • Clutter discriminating focal plane arrays
    Patent number: 6657195
    Abstract: A quantum well infrared photodetector focal plane array is disclosed wherein each detector structure of the array comprises two vertically stacked quantum well layers. Each of the quantum well layers are individually biased by separate bias voltages and the separate bias voltages are modulated to produce two or more measurements at different spectral bands. Each detector structure of the array can therefore perform measurements of incident infrared energy in at least four separate spectral bands. This technique of measuring incident infrared energy in four separate spectral bands can advantageously be applied to the discrimination of hot gas sources from background infrared clutter.
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: December 2, 2003
    Assignee: Lockheed Martin Corporation
    Inventors: Robert J. Martin, Gene Raymond Loefer