Patents by Inventor Sébastien CHIAROTTO

Sébastien CHIAROTTO 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: 12092908
    Abstract: The invention relates to an optical article comprising a substrate having at least one main face successively coated with a layer comprising chromium, silicon and oxygen, a monolayer sub-layer having a thickness higher than or equal to 100 nm, a multilayer interferential coating comprising a stack of at least one high refractive index layer having a refractive index higher than 1.55 and at least one low refractive index layer having a refractive index of 1.55 or less, wherein the ratio (I) is higher than or equal to 1.5, and the optical article has a Bayer value determined in accordance with the ASTM F735-81 standard higher than or equal to 7.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: September 17, 2024
    Assignee: Essilor International
    Inventors: Benoit Emprin, Nicolas Maitre, Sébastien Chiarotto
  • Patent number: 11707921
    Abstract: The invention relates to an item comprising a substrate having at least one main surface coated with a multilayer interferential coating comprising at least one layer with a refractive index higher than 1.65 and at least one layer with a refractive index lower than, or equal to, 1.65, at least one of the layers of the interferential coating being an organic-inorganic layer that has been deposited in a vacuum environment and has a thickness of at least 30 nm, said interferential coating having a thickness of at least 450 nm and/or at least 8 layers.
    Type: Grant
    Filed: July 8, 2020
    Date of Patent: July 25, 2023
    Assignee: Essilor International
    Inventors: Sébastien Chiarotto, Karin Scherer
  • Publication number: 20210405261
    Abstract: The invention relates to an article comprising a substrate having at least one main surface coated with a layer L of a material M obtained by vacuum deposition, by co-evaporation, of at least one metallic compound A chosen from alkaline-earth metal fluorides and of at least one organic compound B, the material M having a refractive index at the wavelength of 632.8 nm ranging from 1.38 to 1.47. According to the invention: the organic compound B comprises an organosilicon compound or a mixture of organosilicon compounds; and the deposition of the compound B, in gaseous form, is carried out in the presence of an ion bombardment.
    Type: Application
    Filed: July 6, 2021
    Publication date: December 30, 2021
    Inventors: Sébastien Chiarotto, Jolanta Klemberg-Sapieha, Martin Caron
  • Publication number: 20210397025
    Abstract: The invention relates to an optical article comprising a substrate having at least one main face successively coated with a layer comprising chromium, silicon and oxygen, a monolayer sub-layer having a thickness higher than or equal to 100 nm, a multilayer interferential coating comprising a stack of at least one high refractive index layer having a refractive index higher than 1.55 and at least one low refractive index layer having a refractive index of 1.55 or less, wherein the ratio (I) is higher than or equal to 1.5, and the optical article has a Bayer value determined in accordance with the ASTM F735-81 standard higher than or equal to 7.
    Type: Application
    Filed: October 17, 2019
    Publication date: December 23, 2021
    Inventors: Benoit EMPRIN, Nicolas MAITRE, Sébastien CHIAROTTO
  • Publication number: 20210023826
    Abstract: The invention relates to an item comprising a substrate having at least one main surface coated with a multilayer interferential coating comprising at least one layer with a refractive index higher than 1.65 and at least one layer with a refractive index lower than, or equal to, 1.65, at least one of the layers of the interferential coating being an organic-inorganic layer that has been deposited in a vacuum environment and has a thickness of at least 30 nm, said interferential coating having a thickness of at least 450 nm and/or at least 8 layers.
    Type: Application
    Filed: July 8, 2020
    Publication date: January 28, 2021
    Inventors: Sébastien CHIAROTTO, Karin SCHERER
  • Publication number: 20190302313
    Abstract: The invention relates to an article comprising a substrate having at least one main surface coated with a multilayer interference coating, said coating containing a layer A having a refractive index less than or equal to 1.55. The article is characterised in that: layer A forms either the outer interference coating layer or an intermediate layer that is in direct contact with the outer interference coating layer, said outer interference coating layer being a layer B having a refractive index less than or equal to 1.55; layer A is obtained by ion beam deposition of activated species from at least one compound C in gaseous form and containing in its structure at least one silicon atom, at least one carbon atom, at least one hydrogen atom and, optionally, at least one nitrogen atom and/or at least one oxygen atom, layer A being deposited in the presence of nitrogen and/or oxygen when compound A does not contain nitrogen and/or oxygen; and layer A is not formed from inorganic precursor compounds.
    Type: Application
    Filed: February 22, 2019
    Publication date: October 3, 2019
    Inventors: Ludvik Martinu, Jolanta Klemberg-Sapieha, Oleg Zabeida, Sebastien Chiarotto, Karin Scherer
  • Patent number: 10401536
    Abstract: The invention concerns an item comprising a substrate having at least one main surface coated with a layer A in direct contact with a hydrophobic outer layer B, characterized in that said layer A has been obtained by depositing, under ion beam, activated species from at least one compound C, in gas form, containing, in the structure of same: at least one carbon atom, at least one hydrogen atom, at least one Si—X group, in which X is a hydroxy group or a hydrolysable group chosen from the H, halogen, alkoxy, aryloxy and acyloxy groups, —NR1R2 in which R1 and R2 separately designate a hydrogen atom, an alkyl group or an aryl group, and —N(R3)—Si in which R3 designates an alkyl group or an aryl group, said compound C being neither tetramethyldisiloxane nor tetraethoxysilane, nor vinylmethyldiethoxysilane, nor hexamethylcyclotrisilazane, said layer A not being formed from inorganic precursor compounds.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: September 3, 2019
    Assignee: Essilor International
    Inventors: Sebastien Chiarotto, Bruce Faure, Stephanie Pega, Karin Scherer
  • Publication number: 20190100455
    Abstract: The invention relates to an item comprising a substrate having at least one main surface coated with a multilayer interferential coating comprising at least one layer with a refractive index higher than 1.65 and at least one layer with a refractive index lower than, or equal to, 1.65, at least one of the layers of the interferential coating being an organic-inorganic layer that has been deposited in a vacuum environment and has a thickness of at least 30 nm, said interferential coating having a thickness of at least 450 nm and/or at least 8 layers.
    Type: Application
    Filed: August 5, 2016
    Publication date: April 4, 2019
    Inventors: Sébastien CHIAROTTO, Karin SCHERER
  • Publication number: 20180372916
    Abstract: The invention relates to an article comprising a substrate having at least one main surface coated with a layer L of a material M obtained by vacuum deposition, by co-evaporation, of at least one metallic compound A chosen from alkaline-earth metal fluorides and of at least one organic compound B, the material M having a refractive index at the wavelength of 632.8 nm ranging from 1.38 to 1.47. According to the invention: the organic compound B comprises an organosilicon compound or a mixture of organosilicon compounds; and the deposition of the compound B, in gaseous form, is carried out in the presence of an ion bombardment.
    Type: Application
    Filed: December 16, 2016
    Publication date: December 27, 2018
    Inventors: Sébastien Chiarotto, Jolanta Klemberg-Sapieha, Martin Caron
  • Publication number: 20180231689
    Abstract: An item including a substrate having at least one main surface coated with an interference coating including: a layer A with refractive index less than or equal to 1.65 and obtained via vacuum deposition assisted by an ion source made of at least one organosilicon compound A and making direct contact with layer A, layer B having a refractive index greater than 1.65 and is obtained via vacuum deposition assisted by an ion source made of at least one metal oxide and at least one organosilicon compound B, layer B containing at least one metal oxide having a refractive index greater than or equal to 1.8, or a layer C that includes a silicon oxide, has a thickness less than or equal to 15 nm, and makes direct contact with a layer E that includes at least one metal oxide having a refractive index greater than or equal to 1.8.
    Type: Application
    Filed: August 5, 2016
    Publication date: August 16, 2018
    Inventor: Sébastien CHIAROTTO
  • Publication number: 20160139304
    Abstract: The invention concerns an item comprising a substrate having at least one main surface coated with a layer A in direct contact with a hydrophobic outer layer B, characterised in that said layer A has been obtained by depositing, under ion beam, activated species from at least one compound C, in gas form, containing, in the structure of same: at least one carbon atom, at least one hydrogen atom, at least one Si—X group, in which X is a hydroxy group or a hydrolysable group chosen from the H, halogen, alkoxy, aryloxy and acyloxy groups, —NR1R2 in which R1 and R2 separately designate a hydrogen atom, an alkyl group or an aryl group, and —N(R3)—Si in which R3 designates an alkyl group or an aryl group, said compound C being neither tetramethyldisiloxane nor tetraethoxysilane, nor vinylmethyldiethoxysilane, nor hexamethylcyclotrisilazane, said layer A not being formed from inorganic precursor compounds.
    Type: Application
    Filed: June 13, 2014
    Publication date: May 19, 2016
    Applicant: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventors: Sebastien Chiarotto, Bruce Faure, Stephanie Pega, Karin Scherer
  • Publication number: 20140354945
    Abstract: The invention relates to an article comprising a substrate having at least one main surface coated with a multilayer interference coating, said coating containing a layer A having a refractive index less than or equal to 1.55. The article is characterised in that: layer A forms either the outer interference coating layer or an intermediate layer that is in direct contact with the outer interference coating layer, said outer interference coating layer being a layer B having a refractive index less than or equal to 1.55; layer A is obtained by ion beam deposition of activated species from at least one compound C in gaseous form and containing in its structure at least one silicon atom, at least one carbon atom, at least one hydrogen atom and, optionally, at least one nitrogen atom and/or at least one oxygen atom, layer A being deposited in the presence of nitrogen and/or oxygen when compound A does not contain nitrogen and/or oxygen; and layer A is not formed from inorganic precursor compounds.
    Type: Application
    Filed: December 27, 2012
    Publication date: December 4, 2014
    Inventors: Ludvik Martinu, Jolanta Sapieha, Oleg Zabeida, Sebastien Chiarotto, Karin Scherer