Patents by Inventor Adolfo C. Biosca

Adolfo C. Biosca 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).

  • Dual-modulation interferometric ellipsometer
    Patent number: 5485271
    Abstract: The invention relates to an infrared ellipsometer intended to take measurements of a sample (1). An exciter group (3) of the ellipsometer includes a source (101), a Michelson interferometer (103), a polarizer (105), and an optical device (107) to align the source (101) and the sample (1). An analysis group (7) has a polarizer-analyzer (701), a detector (703), and an optical device (705) for aligning the sample (1) and the detector (703). This infrared ellipsometer also incorporates a phase modulator (8). An electronic devices (9) controls the modulator (8) and the Michelson interferometer (103), and receives the signal produced by the detector (703).
    Type: Grant
    Filed: April 6, 1995
    Date of Patent: January 16, 1996
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Bernard Drevillon, Adolfo C. Biosca