Patents Assigned to Essilor International Compagnie
  • Process for Manufacturing an Ophthalmic Lens by Impregnation of a Benzotriazole Derivative
    Publication number: 20160153079
    Abstract: The present invention relates to a process for manufacturing an ophthalmic lens comprising a UV-absorbent transparent organic substrate, comprising submerging the organic substrate in a bath consisting of an aqueous solution containing a 2-(2-hydroxy-4-alkyloxyphenyl)-2H-benzotriazole, in which the alkyl group is linear or branched and contains 3 to 12 carbon atom
    Type: Application
    Filed: June 19, 2014
    Publication date: June 2, 2016
    Applicant: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventor: Chafik HABASSI
  • OPTICAL ARTICLE COMPRISING AN ANTIREFLECTIVE COATING WITH A VERY LOW REFLECTION IN THE VISIBLE REGION
    Publication number: 20160154254
    Abstract: This invention relates to an ophthalmic lens comprising a transparent substrate with a front main face and with a rear main face, at least one of the main faces being coated with a multilayered antireflective coating comprising a stack of at least one layer having a refractive index higher than or equal 1.5 and at least one layer having a refractive index lower than 1.5, such that:—the mean light reflection factor in the visible region Rv is lower than or equal to 0.5% for an angle of incidence lower than 35°;—the Chroma C* is equal or higher than 18, preferably 20, according to the international colorimetric CIE L*a*b* for an angle of incidence (?) of 15°.
    Type: Application
    Filed: July 5, 2013
    Publication date: June 2, 2016
    Applicant: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventors: Ilya BOLSHAKOV, Francisco DE AYGUAVIVES
  • METHOD FOR MANUFACTURING A SUBSTRATE COATED WITH MESOPOROUS ANTISTATIC FILM, AND USE THEREOF IN OPHTHALMIC OPTICS
    Publication number: 20160145479
    Abstract: The present invention relates to an article comprising a substrate having a main surface coated with a mesoporous antistatic coating, said coating having a refractive index lower than or equal to 1.5, and a silica based matrix functionalized by ammonium groups, said matrix having a hydrophobic character. Under certain conditions, the mesoporous antistatic coating is a single-layer anti-reflection coating or is part of a multi-layer anti-reflection coating. This invention further relates to a method for manufacturing said article, and to the use of a mesoporous coating having a silica based matrix functionalized by ammonium groups, as an antistatic coating.
    Type: Application
    Filed: January 29, 2016
    Publication date: May 26, 2016
    Applicant: Essilor International (Compagnie Generale d'Optique)
    Inventors: Mamonjy CADET, Mathieu FEUILLADE
  • OPTICAL ARTICLE HAVING A RED RESIDUAL REFLECTION COLOUR
    Publication number: 20160147085
    Abstract: The present invention relates to a transparent article comprising a substrate comprising at least one front face and one back face, at least one of these two main faces being coated with an interference coating having a reflection value in the visible Rv lower than or equal to 97% and preferably lower than or equal to 50%, characterized in that said interference coating possesses a hue angle h and a chroma value C* able to render the present residual reflection a given perceived chromatic colour in the red.
    Type: Application
    Filed: July 4, 2014
    Publication date: May 26, 2016
    Applicant: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE
    Inventors: Frédéric ARROUY, Francisco DE AYGUAVIVES, Ivan DIEGUEZ
  • Item Coated with a Silicon/Organic Layer Improving the Performances of an Outer Coating
    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
  • Method For Optimizing A Measured Contour Of A Spectacle Frame
    Publication number: 20160139428
    Abstract: Method implemented by computer means for optimizing a measured contour of an opening of a spectacle frame, the method comprising: a contour data providing step, a working contour defining step, during which a working contour of the spectacle frame is defined, a first contour cost function providing step, during which a first contour cost function function of the mth derivative of the curve of the contour is provided, a set of contour cost functions providing step, during which a set of contour cost functions is provided, a global contour cost function evaluation step during which a global contour cost function is evaluated, a contour modifying step, during which the working contour is modified, wherein the global contour cost function evaluation and contour modifying steps are repeated so as to minimize the global contour cost function.
    Type: Application
    Filed: June 13, 2014
    Publication date: May 19, 2016
    Applicant: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventor: Fabien MURADORE
  • Method For Determining Wave-Front Aberration Data Of A To-Be-Tested Optical System
    Publication number: 20160135678
    Abstract: A method for determining wave-front aberration data of a to-be-tested optical system comprising the steps of: a) providing a wave-front sensing image of light received from the tested optical system; b) providing a model representative of the optical system with at least an optical parameter representative of said model; and c) optimizing a set of wave-front coefficient data and said at least optical parameter of said model according to a merit function calculating the merit function comprises the steps of generating a wave-front sensing modeled image of light received from said model by the at least optical parameter and the set of wave-front coefficient data, and calculating a criteria based on shape parameter data of the wave-front sensing image and shape parameter data of the wave-front sensing modeled image, so as to obtain wave-front aberration data of the tested optical system.
    Type: Application
    Filed: June 9, 2014
    Publication date: May 19, 2016
    Applicant: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventors: Martha HERNANDEZ CASTANEDAS, Gildas MARIN, Larry THIBOS, Tao LIU
  • Temporary suspension element
    Patent number: 9335002
    Abstract: A temporary suspension element comprises a rectilinear guide with a threaded end, and a catch which can swing between a guiding position and a retaining position. The element can temporarily replace screws that attach a structure under a support, during the attachment or disassembly of said structure. The attachment and the disassembly of the structure can then be performed by a single operator.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: May 10, 2016
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventors: Yves Aiguebonne, Jose Albuquerque, Daniel Darmes
  • Optical Article Comprising an Acrylic Substrate Coated with a Specific Hard-Coat
    Publication number: 20160124122
    Abstract: This invention is related to an optical article, such as an ophthalmic lens, comprising a an acrylic substrate (1) coated with a specific hard-coat (2) formed from a composition comprising a hydrolyzed alkoxysilane, a colloidal metal oxide and a poly-glyceryl ether.
    Type: Application
    Filed: May 7, 2013
    Publication date: May 5, 2016
    Applicant: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventors: Olivier Duc, Hui Yu, Yangiong Qi, Kian Soon Yong
  • Optical element comprising a crack-free aerogel
    Patent number: 9327460
    Abstract: A method manufactures an optical element having a surface that includes cells filled with an aerogel that does not crack during its manufacture or during a subsequent step of impregnating the aerogel with a liquid. The disclosure also relates to the optical elements that can be obtained using the method.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: May 3, 2016
    Assignees: Essilor International (Compagnie Generale D'Optique), Centre National de la Recherche Scientifique—CNRS
    Inventors: Claudine Biver, Jean-Paul Cano, Rémi Courson, Sylvie Calas-Etienne, Pascal Etienne
  • Progressive ophthalmic lens
    Patent number: 9329406
    Abstract: Disclosed is a progressive ophthalmic lens including a front surface and a rear surface, each surface having in each point an altitude, a mean sphere value and a cylinder value, the front surface of the lens including: —a far vision zone having a far vision reference point; —a near vision zone having a near vision reference point; —a main meridian, wherein the front surface is regressive and has: —a sphere gradient normalized value of less than 7.50·10?1 mm?1 at any point in a central portion of the lens including a portion of the main meridian (32), the far vision reference point (FV) and the near vision reference point (NV); —a cylinder gradient normalized value of less than 1.45 mm?1 at any point in the central portion of the lens.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: May 3, 2016
    Assignee: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventors: Helene De Rossi, Jerome Moine, Carlos Rego, Matthieu Guillot
  • Lens blocking method and related device
    Patent number: 9327380
    Abstract: A method for blocking an optical lens (100) on a holding unit (200) thanks to a thermoplastic material layer (310) comprising the steps of: a) providing around the holding unit (200) a removable part (500) comprising an upper part surface (510) which is arranged so as to extend the upper assembling surface (210) of the holding unit and not to contact the bottom lens surface (120); b) providing a predetermined volume of a thermoplastic material; c) orientating the lens (100) in a desired spatial configuration; d) positioning the lens (100) contacting the thermoplastic material of step b) at a soften or melted state and pressing the lens (100) so as to keep the lens spatial configuration constant and to let the thermoplastic material flow from the upper assembling surface (210) of the holding unit to at least a part of the upper part surface (510) of the removable part (500); e) removing the removable part.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: May 3, 2016
    Assignee: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventors: Yohann Felten, Matthieu Le Gall
  • Glyoxal adhesive system and process for manufacturing same
    Patent number: 9315693
    Abstract: An optical adhesive product and a process for manufacturing an optical adhesive product, including laminated film ensembles, and laminated lenses, are described. The optical adhesive product includes a glyoxal water solution that is pH adjusted for use as an optical adhesive that demonstrates a wet peel force strength above about 6 Newtons. A water-based polymer, such as PVOH, may be added to the adhesive system. According to the process, the adhesive system is manufactured and utilized to laminate TAC-PVA-TAC films together to form a polar film ensemble. The polar film ensemble is laminated to an optical substrate and, when forming an ophthalmic lens, surfaced, coated and edged. The optical adhesive product avoids film separation in the polar TAC-PAV-TAC film ensemble during edging.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: April 19, 2016
    Assignee: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventors: Peiqi Jiang, Ronald A. Berzon, Steve Weber
  • Process for determining a pair of progressive ophthalmic lenses
    Patent number: 9307899
    Abstract: A process for determining a pair of personalized progressive ophthalmic lenses. and a computer program product associated to these processes. Right-handed persons and left-handed persons behave very differently when executing certain near vision tasks, such as writing on a sheet of paper. However, current lens designs do not take into account these behavior differences. The comfort of wearing a pair of ophthalmic lenses can be improved for the wearer for whom the lenses are intended by adapting his near vision according to his handedness.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: April 12, 2016
    Assignee: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventors: Damien Paille, Benjamin Rousseau, Aude Contet, Isabelle Poulain, Stéphanie Vialet, Farid Karioty
  • Fluorine-Doped Stannic Oxide Colloids and Method for Preparing Same
    Publication number: 20160091638
    Abstract: A method for producing a colloidal alcoholic suspension of fluorine-doped SnO2 particles. It also pertains to the colloidal loidal suspension thus obtained and to its uses, especially in the manufacture of an antistatic coating for an optical article, such as an ophthalmic lens.
    Type: Application
    Filed: May 14, 2013
    Publication date: March 31, 2016
    Applicants: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE), SHANGHAI UNIVERSITY
    Inventors: Stephanie Pega, Jian Zhao, Liyi Shi, Shuai Yuan, Zhuyi Wang, Yin Zhao
  • Device for determining at least one sight parameter of a subject in a plurality of viewing directions
    Patent number: 9289119
    Abstract: Device for determining at least one sight parameter of a subject, includes stimulation elements for stimulating the sight of the subject in a predetermined viewing direction, elements for ophthalmological measurement of at least one sight parameter of a subject, the elements for ophthalmological measurement having at most one optical measurement axis for each eye, at least one optical conjugation system, arranged between the ophthalmological measurement apparatus and the right eye and/or left eye of a subject, and a system for aligning the optical conjugation system, so as to optically conjugate a point Y and a point E, the point Y intended to coincide with the optical center of rotation of the eye concerned, the point E being situated on the optical measurement axis, so as to align the image of the optical measurement axis with the ocular axis of the right or left eye in a plurality of viewing directions.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: March 22, 2016
    Assignee: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventors: Konogan Baranton, Guilhem Escalier
  • Optical article comprising an anti-reflecting coating having anti-fogging properties
    Patent number: 9291747
    Abstract: An optical article having anti-fogging properties is disclosed. The optical article includes an anti-reflecting coating having anti-fogging properties even when the optical articles are provided with an anti-soiling top coat layer. The optical article may particularly find use in ophthalmic lenses, including eyeglass lenses.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: March 22, 2016
    Assignee: Essilor International (Compagnie Generale D'Optique)
    Inventors: Gerald Fournand, Agnes Jallouli
  • Tinting Enhancers for Hard Coat Tinting
    Publication number: 20160077241
    Abstract: The invention pertains to a tintable hard coat composition for forming a film on an optical article, the composition comprising at least one tinting enhancer, and at least two polymerizable monomers, a first monomer being an hydrolysat of an alkoxysilane comprising at least two alkoxy groups and one epoxy group, and a second monomer having at least two functional groups reacting with the first monomer, at least one of the two monomers having three functional groups of the same kind; the tinting enhancer being preferably chosen from the group consisting of 4-(methyl mercapto) phenol, 4,4? thiodiphenol,4,4?-Sulfonyldiphenol, and 3,3?-(Ethylenedioxy)diphenol or a mix thereof: Formulas (I), (II), (III), (IV).
    Type: Application
    Filed: April 29, 2014
    Publication date: March 17, 2016
    Applicant: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventor: Hui Yu
  • Method for producing an ophthalmic lens comprising a base lens and a film structure
    Patent number: 9283717
    Abstract: A method for producing an ophthalmic lens comprised of a base lens and a film structure bound to said base lens includes a pressure-free heating. Said heating is performed after assembling the film structure with a semi-finished lens (1), and before said semi-finished lens is machined for obtaining the base lens. Although a maximum heating temperature is higher than a glass-transition temperature of the semi-finished lens, no image distortion and optical aberration is produced for the final ophthalmic lens. The maximum heating temperature is also lower than a glass-transition temperature of the film structure.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: March 15, 2016
    Assignee: Essilor International (Compagnie Generale D'Optique)
    Inventors: Peiqi Jiang, Bruce Keegan
  • Method of preparing a transparent polumer material comprising a thermoplastic polycarbonate and mineral nanoparticles
    Patent number: 9284422
    Abstract: A method of preparing a transparent polymer material includes mixing mineral nanoparticles selected from nanoparticles of alkaline-earth metal carbonates, alkaline-earth metal sulfates, metallic oxides, oxides of metalloids, and siloxanes, and a composition A including at least one thermoplastic polymer in the molten state selected from polycarbonate (PC), polystyrene (PS) and polymethyl methacrylate (PMMA) in order to obtain a master-batch, the mixture of step i) including at least 25% and at most 75% by weight of the mineral nanoparticles. The master-batch obtained in step i) is mixed with a composition B of a thermoplastic polycarbonate matrix (PCm) in the molten state, to obtain a transparent polymer material including at most 10% by weight of the mineral nanoparticles, preferably at most 5% by weight of the mineral nanoparticles.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: March 15, 2016
    Assignees: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE), RENAULT S.A.S.; SOLVAY SA
    Inventors: Virginie Boucher, Alexandra Roos, Sophie Duquesne, Serge Bourbigot, Laure Meynie, Karine Cavalier, Didier Sy, Marc Lacroix