Patents by Inventor Earl J. Fjarlie

Earl J. Fjarlie 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: 4256405
    Abstract: The dispersion means of the present scanning spectrometer comprises an interference filter or diffraction means to be positioned at a known angle to the optical axis of the input flux to the spectrometer. The spectrometer is provided with shutter means for passing the light to the filter or diffraction means through sequentially spatially varied locations in the shutter means, and with means for receiving and passing light from sequentially varied locations of the shutter means at varying, measurable angles of incidence to the filter or diffraction means. The shutter means may be a liquid crystal cell.
    Type: Grant
    Filed: September 20, 1978
    Date of Patent: March 17, 1981
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence
    Inventor: Earl J. Fjarlie
  • Patent number: 4193691
    Abstract: The slit assembly of the present spectrometer comprises a liquid crystal cell. The electrodes of the cell are selectively actuated for producing a pattern of slits appropriate to the spectral lines of interest in the spectrum derived from the substance under analysis.
    Type: Grant
    Filed: May 2, 1977
    Date of Patent: March 18, 1980
    Assignee: RCA Corporation
    Inventor: Earl J. Fjarlie