Patents by Inventor Alexander F. Goncharov

Alexander F. Goncharov 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).

  • Optical devices having a wavelength-tunable dispersion assembly that has a volume dispersive diffraction grating
    Patent number: 6583873
    Abstract: A spectrometer has a source of illumination radiation having a plurality of spectral wavelengths, a bandpass filter, a dispersive beamsplitter disposed in an optical path of said source of illumination radiation, an illumination radiation rejection filter, and a spectrograph disposed in a path of radiation from a sample illuminated by illumination radiation from said source of illumination radiation. The dispersive beamsplitter, the bandpass filter, the illumination radiation rejection filter and spectrograph are tunable in correspondence to a selected one of the plurality of spectral wavelengths of the source of illumination radiation. The dispersive beamsplitter directs the selected one of the plurality of spectral wavelengths of illumination radiation to a sample and directs elastically scattered and reflected radiation from the sample out of a measurement beam of light emanating from the sample.
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: June 24, 2003
    Assignee: The Carnegie Institution of Washington
    Inventors: Alexander F. Goncharov, Viktor V. Struzhkin