Patents by Inventor David BARAT

David BARAT 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).

  • Element for covering the projection aperture of a heads-up display device
    Patent number: 12105254
    Abstract: A dust-proof covering element is provided to close a projection aperture located in the dashboard of a vehicle and through which the information-carrying source light beam projected by the projecting module of a head-up display device passes on its way to a partially reflective return element. The covering element comprises a transparent carrier and an optical coating placed on one of the faces of the carrier; wherein, the optical coating comprises a metal layer with plasmonic properties, said metal layer being endowed with an array of subwavelength nanoperforations, and being configured to allow the extraordinary transmission of one or more restricted bands of wavelengths of the visible spectrum that are centered on the one or more wavelengths of the light beam projected by the projecting module.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: October 1, 2024
    Assignees: STELLANTIS AUTO SAS, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE PARIS-SUD
    Inventors: Thomas Lopez, David Barat, Laetitia Pradere, Béatrice Dagens
  • ELEMENT FOR COVERING THE PROJECTION APERTURE OF A HEADS-UP DISPLAY DEVICE
    Publication number: 20220326414
    Abstract: A dust-proof covering element is provided to close a projection aperture located in the dashboard of a vehicle and through which the information-carrying source light beam projected by the projecting module of a head-up display device passes on its way to a partially reflective return element. The covering element comprises a transparent carrier and an optical coating placed on one of the faces of the carrier; wherein, the optical coating comprises a metal layer with plasmonic properties, said metal layer being endowed with an array of subwavelength nanoperforations, and being configured to allow the extraordinary transmission of one or more restricted bands of wavelengths of the visible spectrum that are centered on the one or more wavelengths of the light beam projected by the projecting module.
    Type: Application
    Filed: August 20, 2020
    Publication date: October 13, 2022
    Inventors: Thomas LOPEZ, David BARAT, Laetitia PRADERE, Béatrice DAGENS