Patents by Inventor Julie Frechette

Julie Frechette 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).

  • Packaged optical sensors on the side of optical fibers
    Patent number: 7209605
    Abstract: The present invention concerns an optical sensor located on a preferred azimuthal portion of the side of an optical fiber. An optical fiber having two opposite ends, a core and a cladding and at least one sensing area is disclosed. Each of the sensing areas is located between the two opposite ends and each has a longitudinal, a radial and an azimuthal portion of the fiber that has been removed and replaced by a sensing material. The sensing collected light is thus representative of a parameter to be measured, such as temperature. Placing the sensing material in a lateral side portion of the fiber increases the sensitivity of the sensor, particularly when it comes to contact temperature measurement in vivo.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: April 24, 2007
    Assignee: Institut National d'Optique
    Inventors: Daniel Cantin, Alain Cournoyer, Marc Lévesque, Julie Fréchette, Sylvain Plante
  • Multi-wavelength imaging of highly turbid media
    Publication number: 20050187478
    Abstract: In a method of multi-wavelength imaging internal structures of a highly turbid medium, the internal structures are imaged at each one of a set of at least two predetermined wavelengths, to generate a corresponding set of respective images. The set of images are then merged to generate a corresponding fused image.
    Type: Application
    Filed: July 16, 2002
    Publication date: August 25, 2005
    Applicant: ART, Advanced Research Technologies Inc.
    Inventors: Pierre Beaudry, Richard Boudreault, Julie Frechette, Sonia Verreault, Pierre Galarneau
  • Packaged optical sensors on the side of optical fibres
    Publication number: 20030231818
    Abstract: The present invention concerns an optical sensor located on the side of an optical fibre. An optical fibre having two opposite ends, a core and a cladding and at least one sensing area is disclosed. Each of the sensing areas is located between the two opposite ends and each has a longitudinal and radial portion of the fibre that has been removed and replaced by a sensing material. The luminescent light is thus representative of a parameter to be measured, such as temperature. Placing the sensing material in a side portion of the fibre increases the sensitivity of the sensor, particularly when it comes to temperature measurement in vivo.
    Type: Application
    Filed: February 19, 2003
    Publication date: December 18, 2003
    Applicant: Institut National D'Optique
    Inventors: Daniel Cantin, Alain Cournoyer, Marc Levesque, Julie Frechette, Sylvain Plante
  • High power laser beam sampler
    Patent number: 5323267
    Abstract: A beam sampler comprises a substrate made of highly transparent fused silica or zinc selenide, both capable of sustaining high power laser beams. The substrate defines an outer surface through which the light beam being sampled propagates. A sinusoidal diffracting relief is etched on this outer surface directly into the light-propagating material of the substrate. When a light beam propagates through the outer surface of the substrate, the three-dimensional diffracting relief extracts from this light beam at least one pair of low power beam samples.
    Type: Grant
    Filed: January 2, 1992
    Date of Patent: June 21, 1994
    Assignee: Gentec Inc.
    Inventors: Pierre Galarneau, Pierre Langlois, Michel Belanger, Julie Frechette, Jean-Marie Trudeau, Marie Cote