Patents by Inventor Philippe Roisin

Philippe Roisin 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).

  • Patent number: 8846140
    Abstract: The invention relates to a method for producing an optical article having antireflection or reflective properties and comprising a substrate having at least one main surface, comprising the step of depositing an sub-layer onto a substrate's main surface, the step of treating the sub-layer by ionic bombardment and the step of depositing onto said sub-layer a multilayered stack comprising at least one high refractive index layer and at least one low refractive index layer. According to a preferred embodiment, the deposition of the sub-layer is conducted in a vacuum chamber in which a gas is supplied during the deposition step.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: September 30, 2014
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventors: Philippe Roisin, Michele Thomas
  • Patent number: 8318245
    Abstract: The invention relates to a method for producing an optical article having antireflection or reflective properties and comprising a substrate having at least one main surface, comprising the step of depositing an sub-layer onto a substrate's main surface, the step of treating the sub-layer by ionic bombardment and the step of depositing onto said sub-layer a multilayered stack comprising at least one high refractive index layer and at least one low refractive index layer. According to a preferred embodiment, the deposition of the sub-layer is conducted in a vacuum chamber in which a gas is supplied during the deposition step.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: November 27, 2012
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventors: Philippe Roisin, Michèle Thomas
  • Publication number: 20090169859
    Abstract: The present invention relates to an article comprising a substrate having a main surface coated with a coating, part of which at least is mesoporous and has a refractive index profile with optical function, whose variation is imposed by the mesopore content and/or the filling ratio of the mesopores. The profile may be such that the refractive index varies depending on the distance to a given axis, or such that the refractive index variation is monotone, decreasing along any axis which is perpendicular to the surface of the substrate underlying the mesoporous part of said coating and oriented away from the substrate. The present invention also relates to methods for making said article, which differ depending on the technique from which the refractive index profile is created. The invention is applicable to ophthalmic optics.
    Type: Application
    Filed: February 2, 2007
    Publication date: July 2, 2009
    Applicant: Essilor International (Compagnie Generale d'Optique)
    Inventors: John Biteau, Jean-Pierre Boilot, Mamonjy Cadet, Hervé Cado, Thierry Gacoin, Muriel Matheron, Philippe Roisin, Laurianne Vagharchakian
  • Publication number: 20080213473
    Abstract: The invention relates to a method for producing an optical article having antireflection or reflective properties and comprising a substrate having at least one main surface, comprising the step of depositing an sub-layer onto a substrate's main surface, the step of treating the sub-layer by ionic bombardment and the step of depositing onto said sub-layer a multilayered stack comprising at least one high refractive index layer and at least one low refractive index layer. According to a preferred embodiment, the deposition of the sub-layer is conducted in a vacuum chamber in which a gas is supplied during the deposition step.
    Type: Application
    Filed: February 22, 2008
    Publication date: September 4, 2008
    Applicant: Essilor International (Compagnie Generale d'Optique)
    Inventors: Philippe Roisin, Michele Thomas
  • Publication number: 20080206470
    Abstract: The invention relates to a method for producing an optical article having antireflection or reflective properties and comprising a substrate having at least one main surface, comprising the step of depositing a sub-layer onto a substrate's main surface, the step of treating the sub-layer by ionic bombardment and the step of depositing onto said sub-layer a multilayered stack comprising at least one high refractive index layer and at least one low refractive index layer. According to a preferred embodiment, the deposition of the sub-layer is conducted in a vacuum chamber in which a gas is supplied during the deposition step.
    Type: Application
    Filed: June 14, 2007
    Publication date: August 28, 2008
    Applicant: Essilor International (Compagnie Generale d'Optique)
    Inventors: Michele Thomas, Philippe Roisin
  • Publication number: 20060023311
    Abstract: The method according to the invention comprises forming on a SiOxFy layer a silica SiO2 and/or metal oxide protective layer obtained through ion beam-assisted vapor phase deposition, comprising bombarding the layer being formed with a beam of positive ions formed from a rare gas, oxygen or a mixture of two or more of such gases, or through cathodic sputtering of a silicon or metal layer followed by an oxidation step of the silicon or the metal layer. Application to the production of antireflection coatings.
    Type: Application
    Filed: August 7, 2003
    Publication date: February 2, 2006
    Applicant: Essilor International Compangnie Generale d'Optique
    Inventors: Karin Scherer, Pascale Lacan, Philippe Roisin, Richard Bosmans