Patents by Inventor Alejandro GIACOMOTTI

Alejandro GIACOMOTTI 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).

  • Publication number: 20220381951
    Abstract: Disclosed is a diffractive optical element includes a substrate (BS) having a first surface and a second surface opposite the first surface, being transparent to light in at least one spectral range and having, in the spectral range, a refractive index that is greater than that of water, at least one metasurface able to diffract light radiation of wavelength ? within the spectral range, incident with an angle of incidence, according to a diffracted radiation, so that the diffracted radiation propagates in the substrate and reaches the second surface of the substrate at a diffracted angle ?d that is greater than or equal to a limit angle (?c) of total internal reflection between the substrate and water, the metasurface being designed to have, for the angle of incidence, a transmission with a 0 order of diffraction below 5% and a transmission of the diffracted radiation corresponding to a ?1 or +1 order of diffraction above 50%.
    Type: Application
    Filed: October 22, 2020
    Publication date: December 1, 2022
    Inventors: Alejandro GIACOMOTTI, Sophie BOUCHOULE, Antu Nehuen GORTARI
  • Patent number: 11047799
    Abstract: A lighting device for total-internal-reflection fluorescence microscopy includes a substrate that is transparent to light, having a refractive index higher than that of water; a light-emitting device arranged in the interior of the substrate, suitable for emitting light radiation in the direction of a surface of the substrate, the light-emitting device being arranged such that at least one portion of the radiation reaches the surface with an angle of incidence larger than or equal to a critical angle of total internal reflection for an interface between the substrate and water; and at least one opaque mask, arranged in the interior or on the surface of the substrate so as to intercept a portion of the radiation that, in the absence of the mask, would reach the surface with an angle of incidence smaller than the critical angle. A lighting device to total-internal-reflection fluorescence microscopy is provided.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: June 29, 2021
    Assignee: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Alejandro Giacomotti, Maia Brunstein, Andrea Cattoni, Sophie Bouchoule, Benjamin Damilano, Denis Lefebvre
  • Publication number: 20190285547
    Abstract: A lighting device for total-internal-reflection fluorescence microscopy includes a substrate that is transparent to light, having a refractive index higher than that of water; a light-emitting device arranged in the interior of the substrate, suitable for emitting light radiation in the direction of a surface of the substrate, the light-emitting device being arranged such that at least one portion of the radiation reaches the surface with an angle of incidence larger than or equal to a critical angle of total internal reflection for an interface between the substrate and water; and at least one opaque mask, arranged in the interior or on the surface of the substrate so as to intercept a portion of the radiation that, in the absence of the mask, would reach the surface with an angle of incidence smaller than the critical angle. A lighting device to total-internal-reflection fluorescence microscopy is provided.
    Type: Application
    Filed: May 23, 2017
    Publication date: September 19, 2019
    Inventors: Alejandro GIACOMOTTI, Maia BRUNSTEIN, Andrea CATTONI, Sophie BOUCHOULE, Benjamin DAMILANO, Denis LEFEBVRE