Patents by Inventor Léo GREUSARD

Léo GREUSARD 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).

  • SNOM device using heterodyne detection
    Patent number: 10684113
    Abstract: An optical detection device includes a light source emitting a light beam whose electromagnetic field, a means adapted to divide the beam into a first beam defining a first reference pathway and a second beam defining a second sample pathway, a modulation system frequency-shifting the electromagnetic fields of the two beams, a beam coupler adapted to collect the beams, an optical detection system adapted to detect the signal arising from the interference between the beams and coupled via the coupler, the sample being placed in the sample pathway, the optical detection system comprising an optical detector and a device adapted to measure the amplitude and the phase of the signal, an opaque screen comprising an optical aperture is placed at the level of a zone of a sample, in proximity to the sample, in the sample pathway.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: June 16, 2020
    Assignee: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Yannick De Wilde, Lèo Greusard, Gilles Tessier, Sylvain Gigan, Samuel Gresillon, Kamel Bencheikh
  • DEVICE FOR IMAGING THE ELECTROMAGNETIC FIELD OF A SAMPLE
    Publication number: 20190041185
    Abstract: An optical detection device includes a light source emitting a light beam whose electromagnetic field, a means adapted to divide the beam into a first beam defining a first reference pathway and a second beam defining a second sample pathway, a modulation system frequency-shifting the electromagnetic fields of the two beams, a beam coupler adapted to collect the beams, an optical detection system adapted to detect the signal arising from the interference between the beams and coupled via the coupler, the sample being placed in the sample pathway, the optical detection system comprising an optical detector and a device adapted to measure the amplitude and the phase of the signal, an opaque screen comprising an optical aperture is placed at the level of a zone of a sample, in proximity to the sample, in the sample pathway.
    Type: Application
    Filed: January 6, 2017
    Publication date: February 7, 2019
    Inventors: Yannick DE WILDE, Léo GREUSARD, Gilles TESSIER, Sylvain GIGAN, Samuel GRESILLON, Kamel BENCHEIKH