Patents Assigned to Sets, Inc.
  • 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