Patents by Inventor Thomas F. Lundeen

Thomas F. Lundeen 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).

  • Holographic grating imaging spectrometer
    Patent number: 5139335
    Abstract: A spectrometer apparatus is provided including means for focusing a light beam with a concave holographic grating, means for passing light reflected from the grating through a step order filter to an array detector and means for processing signals from the array detector. The spectrometer permits monitoring a plurality of grating orders simultanously without mechanical scanning.
    Type: Grant
    Filed: August 24, 1990
    Date of Patent: August 18, 1992
    Assignee: Sets, Inc.
    Inventors: Thomas F. Lundeen, Jonathan C. Gradie