Patents Assigned to Essilor International Compagnie
  • Method for determining front and rear surfaces for optical patches
    Patent number: 9285608
    Abstract: Optical patches are assigned to prescriptions so as to reduce the total number of patch surfaces which are involved. The prescriptions are produced by varying at least one of a front patch surface (S1) and rear patch surface (S2) which are combined to form an optical patch, in accordance with prescription segments. The front patch surfaces (S1) are pseudo-spherical and the rear patch surfaces (S2) include a Fresnel structure superimposed on a pseudo-spherical base shape.
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: March 15, 2016
    Assignee: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventor: Pauline Colas
  • Device for determining a group of vision aids suitable for a person
    Patent number: 9282886
    Abstract: A device (10) for determining a group of at least one vision aid apparatus suitable for the vision of an individual, includes computing elements programmed to: a) determine at least one characteristic of the vision of the individual, b) determine at least one use of the group of at least one vision aid apparatus, desired by the individual, c) determine the group of at least one vision aid apparatus as a function of the characteristic of the vision and of the use desired by the individual.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: March 15, 2016
    Assignee: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventors: Anne-Catherine Scherlen, Pascal Voillemin
  • Method for preparing a glass convenient for trimming, a glass thus obtained, and method for trimming such a glass
    Patent number: 9278885
    Abstract: A method that allows trimming glass comprising a hydrophobic and/or oil-repellent surface coating, where a temporary protective layer is coated on the surface of said glass and the temporary protective layer imparts to the glass a surface energy of at least 15 mJ/m2.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: March 8, 2016
    Assignee: ESSILOR INTERNATIONAL COMPAGNIE GENERALE D'OPTIQUE
    Inventors: Pascale Lacan, Dominique Conte
  • Process of drilling organic glasses
    Patent number: 9274253
    Abstract: The present invention is drawn to a process of drilling organic glasses. The process comprises (a) providing an organic glass substrate; (b) providing onto at least one surface of said organic glass substrate optionally via an adhesive layer selected from the group consisting of pressure sensitive adhesives and hot melt adhesives, a polymer film having an elastic modulus of equal to or less than 3 GPa in at least one direction and a E*h2 equal to or more than 3.5 N in at least one direction, E and h being respectively the elastic modulus and the thickness of the thermoplastic polymer film; and (c) drilling a hole through the organic glass substrate and polymer film by means of a drill.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: March 1, 2016
    Assignee: Essilor International (Compagnie Générale d'Optique)
    Inventors: Haifeng Shan, Aref Jallouli, Rick Muisener
  • Method for optimizing the postural prism of an ophthalmic lens
    Patent number: 9274351
    Abstract: Methods for optimizing postural prism to be added to a pair of ophthalmic multifocal lenses (lenses) adapted to a wearer and to slow down myopia progression are described. The method includes an initial pair of lenses in a providing step S1. In a postural prism adding step S2, a same postural prism is added to each lens. In a gazing step S3, the wearer gazes at a first distance target through the lenses with the added postural prism. A gazing direction determining step S4 determines the wearer's gazing direction during S3. Steps S2 to S4 may be repeated while changing the added postural prism, wherein the added postural prism is smaller than or equal to a maximum prism value. Steps S2 to S4 may be repeated to determine the smallest added postural prism for which the wearer's gazing direction in step S4 passes through the first vision zone.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: March 1, 2016
    Assignee: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventor: Björn Drobe
  • NOSE SUPPORT ASSEMBLY AND CORRESPONDING SPECTACLE FRAME
    Publication number: 20160054583
    Abstract: A nose support assembly for a spectacle frame, includes two nose support elements (3), known as nose pads, and, for each nose pad, a mounting element (2) for the nose pad, known as the nose pad holder. Each nose pad (3) and the corresponding nose pad holder (2) have connecting elements (1) for connecting one to the other, the connecting elements being designed to allow the nose pad (3) to move angularly with respect to the nose pad holder (2). A frame equipped with such a nose support assembly is also described.
    Type: Application
    Filed: April 18, 2014
    Publication date: February 25, 2016
    Applicant: Essilor International (Compagnie Generale D' Optique)
    Inventor: Jean-Luc BERTHELOT
  • Method for manufacturing a substrate coated with mesoporous antistatic film, and use thereof in ophthalmic optics
    Patent number: 9266772
    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: Grant
    Filed: August 12, 2010
    Date of Patent: February 23, 2016
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventors: Mamonjy Cadet, Mathieu Feuillade
  • Binocular multiplexing method and device
    Patent number: 9259147
    Abstract: A binocular multiplexing device for a single-channel ophthalmological instrument for objective measurement of at least one vision parameter of a subject, the ophthalmological instrument including elements for generating a single light beam, elements for collecting a measurement beam by reflecting and/or refracting the light beam against the subject's eye and a sensor associated with the single measurement channel.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: February 16, 2016
    Assignee: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventors: Konogan Baranton, Guilhem Escalier, Benjamin Rousseau
  • Machining method by turning a face of a spectacle lens
    Patent number: 9261876
    Abstract: A machining method for machining a surface of a spectacle lens at a fixed rotation speed, includes a step of determining the rotation speed from geometric characteristics of the surface, characterized in that the step of determining the rotation speed includes the following steps: a value (Maxdiff) representative of the largest difference in geometric value of the mean sphere on the surface is determined; and the rotation speed is deduced from the value (Maxdiff) of the largest difference in geometric values of the mean sphere on the surface and from a geometric value of the cylinder (FV torus) at a predetermined far-vision control point.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: February 16, 2016
    Assignee: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventors: Guillaume Martin, Marc Reignault
  • Method and an apparatus for manufacturing an optical lens
    Patent number: 9254615
    Abstract: A method of manufacturing an optical lens, the method comprising the steps of blocking a lens member at a first position on a blocker; determining the first position of the lens member with respect to the blocker; comparing the first position of the lens member with a predetermined position in order to determine a positioning error between the first position and the predetermined position; determining a surface position of the surface to be manufactured with respect to the blocker according to the positioning error; and configuring operational parameters of a lens manufacturing tool in order to manufacture a surface according to the determined surface position such that the desired optical properties of the optical lens are respected. The invention further relates to an apparatus for manufacturing an optical lens.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: February 9, 2016
    Assignee: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventor: Alexandre Gourraud
  • Method for producing zirconia colloids
    Patent number: 9250360
    Abstract: The present invention pertains to a method for producing a colloidal suspension of zirconia particles, including successively subjecting a mixture of zirconium oxychloride and an alkali metal halide in an aqueous solvent to hydrothermal treatment at a temperature above 150° C, separating the slurry obtained from the supernatant, and peptizing said slurry by adding a strong acid thereto, and desalting said slurry, for example by ultrafiltration, so as to form a colloidal suspension of zirconia. The present invention also pertains to the transparent colloidal suspension obtainable by this method, and to an optical article, such as an ophthalmic lens, comprising a transparent polymer substrate and at least one coating prepared from a composition comprising said colloidal suspension.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: February 2, 2016
    Assignees: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE), SHANGHAI UNIVERSITY
    Inventors: Yves Leclaire, Jian Zhao, Liyi Shi, Zhuyi Wang, Shuai Yuan, Yin Zhao
  • 3H-naphtho [2,1-B] pyrans as photochromic dichroic dyes and optical article containing them
    Patent number: 9249136
    Abstract: A naphthopyran compound represented by the formula (I): wherein: n1, n2, p, q is an integer comprised from 0 to 5 inclusive; m is an integer comprised from 0 to 4 inclusive; R1 and R2 represent a group selected from halogen, —Ra, —OH, —ORa, —SH, —SRa, —NH2, —NRaRa1, —NRbRc, —CO—Ra, and —CO2Ra1, wherein Ra, Ra1, Rb and Rc, are as defined in the description; R3 represents a group selected from halogen, —Ra, —OH, —ORa, —SH, —SRa, —NH2, and —NRaRa1; R4 represents a group selected from halogen, —Ra, —OH, —ORa, —SH, —SRa, —NH2, —NRaRa1, —CO—Ra, and —CO2Ra1; R5 represents a group selected from: halogen, —Ra, —OH, —ORa, —SH, —SRa, —NH2, and —NRaRa1, wherein Ra and Ra1 are as defined hereinbefore, or when q is equal to 2, then two R5 together represent further a group —O—(CH2)q1—O— wherein q1 represents an integer comprised from 1 to 3 inclusive.
    Type: Grant
    Filed: September 6, 2006
    Date of Patent: February 2, 2016
    Assignees: Essilor International (Compagnie Generale d'Optique), Alphamicron, Incorporated
    Inventors: Stuart Aiken, Jean-Paul Cano, Christopher David Gabbutt, Bernard Mark Heron, Tamas Kosa, Linli Su, Ludmila Sukhomlinova, Bahman Taheri
  • Method for determining binocular performance of a pair of spectacle lenses
    Patent number: 9239472
    Abstract: A method of determining binocular performance of a pair of spectacle lenses comprises: a eyes characteristics providing step, a pair of spectacle lenses providing step, a environment providing step, a binocular performance criteria selecting step, and a binocular performance criteria determining step, wherein the at least one binocular performance criterion is selected among one or a combination of the following criteria groups consisting of central vision criteria group and/or peripheral vision criteria group.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: January 19, 2016
    Assignee: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventors: Soazic Mousset, Cecile Petignaud, Claude Pedrono, Agnes Ladous, Bruno Amir, Aude Contet
  • Arylene Carriers for Enhanced Polycarbonate Tinting
    Publication number: 20160010276
    Abstract: The invention pertains to a tinting composition for tinting objects made of polymeric material comprising a dye, solvent and some carrier compound for enhancing dye penetration into the polymeric material wherein the compound is one of a group enclosing at least 4-(methyl thio) benzyl alcohol, 4,4? thiodiphenol, and 4,4? thio bis benzenethiol: formulae (I); (II); (III).
    Type: Application
    Filed: March 6, 2014
    Publication date: January 14, 2016
    Applicant: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventor: Prakhar KASTURE
  • DEVICE FOR CUTTING AN OPHTHALMIC LENS
    Publication number: 20160008945
    Abstract: A device (1) for cutting an ophthalmic lens (L1) to be mounted onto a spectacle frame, includes: elements (10) for locking and rotating the ophthalmic lens about a locking axis (A1); a tool holder which supports at least one first tool (60) rotatable about a rotational axis (A2) and a second tool (80) rotatable about a finishing axis (A6) and which has a spacing mobility (ESC) for the spacing apart thereof from the locking axis, a shifting mobility (TRA) for the axial positioning thereof along the locking axis, and a pivoting mobility (PIV) for adjusting the orientation of the rotational axis relative to the locking axis; and elements for controlling the three mobilities of the tool holder. The rotational and finishing axes are separate from one another.
    Type: Application
    Filed: February 25, 2014
    Publication date: January 14, 2016
    Applicant: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventors: Michel NAUCHE, Laurent GEYSELS
  • Method of manufacturing an optical lens
    Patent number: 9227299
    Abstract: A method of manufacturing an optical lens, comprising: providing a lens member comprising a first surface and a first reference system identified by engraved markings on the first surface, providing surface data corresponding to a second surface of the optical lens to be manufactured, providing second markings on the lens member defining a second reference system, providing marking positioning error between the second markings and the engraved markings, providing an adhesive tape on the first surface of the lens member, and a manufacturing step during which the second surface of the optical lens is manufactured according to the surface data and the marking positioning error such that the relative position of the first and second surfaces is respected.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: January 5, 2016
    Assignee: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventor: Brigitte Eurin
  • Spectacle lens providing ophthalmic vision and an additional vision
    Patent number: 9223147
    Abstract: A method produces a spectacle lens that provides both ophthalmic vision and an additional type of vision. The method includes two consecutive steps consisting of calculating a rear surface and a front surface of the lens. The additional vision type corresponds to the perception of a light that is conveyed between the front and rear surfaces by an insert built into the lens. The rear surface of the glass is initially calculated to provide a correction of the additional vision type, and the front surface is calculated to correct the ophthalmic vision. The two surfaces of the glass therefore have complex shapes, which simultaneously reduce the optical aberration levels for both types of vision.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: December 29, 2015
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventors: Matthieu Guillot, Antoine Videmann, Benjamin Rousseau
  • Device for blocking an ophthalmic lens
    Patent number: 9221145
    Abstract: A blocking device (1) includes: a structure (10); a manipulation arm (30) mounted on the structure to be movable between two extreme positions and including gripper element (33) for gripping a blocking accessory for placing on an ophthalmic lens; guide element (50) for guiding the manipulation arm between its two extreme positions along a path that presents a curved portion and an adjacent rectilinear portion; and drive element (70) for changing the position of the manipulation arm and including a gearwheel that meshes with a rack (40). The rack forms part of the manipulation arm and presents a circularly arcuate portion (41) enabling the manipulation arm to be driven along the curved portion of its path, and a rectilinear portion (42) enabling the manipulation arm to be driven along the rectilinear portion of its path.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: December 29, 2015
    Assignee: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventor: Bernard Brechemier
  • Method for determining reading distance
    Patent number: 9223151
    Abstract: A method for determining reading distance for an individual made to observe a reading zone includes positioning the individual in front of an apparatus to learn their reading distance. The individual reads of a zone that is placed on a portable tablet and equipped with at least one location marker. At least one image is acquired allowing at least one facial reference point of the individual and each marker of the reading tablet. The images is processed taking into account the position of the facial reference point of the individual and the position of the at least one marker of the tablet and the indicating of the reading distance is conveyed.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: December 29, 2015
    Assignee: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE
    Inventors: Ahmed Haddadi, Jean Delzers
  • Tracer-centrer-blocker for ophthalmic lenses and spectacle frames
    Patent number: D748268
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: January 26, 2016
    Assignee: Essilor International (Compagnie Générale d'Optique)
    Inventors: Armand Billard, Sébastien Corre