Patents by Inventor Duarte Paulo da Silva Goncalves

Duarte Paulo da Silva Goncalves 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).

  • Spectrometric using broadband filters with overlapping spectral ranges
    Patent number: 7238942
    Abstract: The invention provides a spectrometer (10) which includes a filter arrangement (16,18), in addition to any option filters (20) for limiting an operational wavelength range of the spectrometer, the filter arrangement (16,18) comprising a plurality of broadband optical filters or broadband optical filter areas each of known transmission and being located or selectively locatable in a path of collected incident spectral radiation (44). The spectrometer further includes at least one detector (24) arranged to measure the spectral radiation passing through at least one of the broadband filters located in the path of collected incident spectral radiation, and signal-processing means (34) for recovering the spectrum of the collected spectral radiation from measurements by the detector (24).
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: July 3, 2007
    Assignee: CSIR
    Inventor: Duarte Paulo da Silva Goncalves
  • Spectrometric using broadband filters with overlapping spectral ranges
    Publication number: 20040149915
    Abstract: The invention provides a spectrometer (10) which includes a filter arrangement (16,18), in addition to any option filters (20) for limiting an operational wavelength range of the spectrometer, the filter arrangement (16,18) comprising a plurality of broadband optical filters or broadband optical filter areas each of known transmission and being located or selectively locatable in a path of collected incident spectral radiation (44). The spectrometer further includes at least one detector (24) arranged to measure the spectral radiation passing through at least one of the broadband filters located in the path of collected incident spectral radiation, and signal-processing means (34) for recovering the spectrum of the collected spectral radiation from measurements by the detector (24).
    Type: Application
    Filed: December 12, 2003
    Publication date: August 5, 2004
    Inventor: Duarte Paulo da silva Goncalves