Patents Assigned to Essilor International
  • Patent number: 12265281
    Abstract: A device for determining a head freedom area of an optical lens adapted for a wearer looking at a specific point in a scene through the optical lens comprises at least one input adapted to obtain optical lens data representing the optical features of an optical lens, to obtain wearing data and fitting data representative of the wearing conditions and fitting parameters of the optical lens, and to obtain a specific threshold value for an optical performance criterion; and at least one processor configured for determining the head freedom area that corresponds to the head positions of the wearer that provide optical performances greater than or equal to the specific threshold value when the wearer is wearing the optical lens in given wearing conditions upon given fitting parameters and looking at the specific point in the scene through the optical lens.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: April 1, 2025
    Assignee: Essilor International
    Inventors: Isabelle Poulain, Guillaume Giraudet, Laurent Calixte, Alain Goulet, Sébastien Fricker
  • Patent number: 12263655
    Abstract: Disclosed is a method for the manufacturing of an optical element having a refractive index above 1.59 by additive manufacturing to the optical element obtained by such a method and to an ophthalmic lens including such an optical element.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: April 1, 2025
    Assignee: Essilor International
    Inventors: Mathieu Feuillade, Pierre Fromentin, Maxime Lecompere, Pierre Leite
  • Publication number: 20250102827
    Abstract: A method for simulating an ophthalmic lens on an eye of a subject viewing a virtual scene using a light field display including a light field window. The method includes calculating a virtual ray between a point of the virtual scene and a point of an eye pupil plane, the virtual ray passing through a virtual lens and being defined on the basis of a model providing a deviation angle of the virtual ray through the virtual lens, repeating the calculating for a plurality of virtual rays passing through the virtual lens and joining couples of one point of the virtual scene and another point of the eye pupil plane, determining a light field representing a modified virtual scene, and generating the light field representing the modified virtual scene on the light field window towards the eye of the subject.
    Type: Application
    Filed: January 24, 2023
    Publication date: March 27, 2025
    Applicant: Essilor International
    Inventors: Stéphane BOUTINON, Martha HERNANDEZ-CASTANEDA, Konogan BARANTON, Marius PELOUX, Gildas MARIN
  • Patent number: 12257792
    Abstract: The present disclosure includes optical articles comprising a film layer that has first and second film surfaces and is embossed such that the first film surface defines a plurality of concave optical elements and the second film surface defines a plurality of convex optical elements. The present optical articles can include one or more optical layers coupled to the film layer. Each of the optical layer(s) can encapsulate the concave optical elements or the convex optical elements.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: March 25, 2025
    Assignee: Essilor International
    Inventors: Matthieu Guillot, Mathieu Meynen, Hao-Wen Chiu, Christophe Plessis, Jeanne Marchal, Bjorn Drobe
  • Patent number: 12251897
    Abstract: A method of forming an ophthalmic laminate lens, includes: forming a planar laminate by adhering a first polycarbonate layer to a first side of a thermoplastic elastomer layer, and adhering a second polycarbonate layer to a second side of the thermoplastic elastomer layer, the first polycarbonate layer having a thickness greater than 250 ?m, the second polycarbonate layer having a thickness greater than 250 ?m, and the thermoplastic elastomer layer having a thickness in a range of 15 ?m to 150 ?m; thermoforming the planar laminate into a curved laminate, the curve laminate having a pre-molding curvature; arranging the curved laminate in a mold; and molding, via the mold set at a predetermined temperature and a predetermined pressure, the curved laminate with a polymer melt into a curved lens.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: March 18, 2025
    Assignee: Essilor International
    Inventors: Ahmed Drammeh, Eric Begg, Zbigniew Tokarski, Peiqi Jiang
  • Patent number: 12245809
    Abstract: An optometry device for testing an individual's eye, includes a refraction test unit having an optical system for providing different vision correction powers close to the eye of the individual, and a display unit adapted to produce a visual test image for the individual's eye, the visual test image being visible through an exit aperture of the test unit of the optometry device. The display unit includes a screen adapted to display a test picture used in producing the visual test image and at least one optical element having an optical power. The optical element presents an active state in which it exhibits a non zero refraction power placed on an optical path of the light emitted by the screen and exiting the device through the exit aperture, and an inactive state in which it introduces no refractive power on the optical path.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: March 11, 2025
    Assignee: Essilor International
    Inventors: Stéphane Boutinon, Léonard Hartmann, Bernard Brechemier, Mai-Lan Boytard
  • Patent number: 12248202
    Abstract: The invention relates to filter dedicated to protect eye cone cells and method associated. The eye cone cells protecting filter is intended to be applied to a transparent surface and to filter incident light for preventing eye cone cells of a user, from damages due to illumination at physiological light levels on the eye of said user, and having spectral characteristics to i) filter light wavelengths between 405 and 465 nanometers, and ii) transmit a filtered light reaching the eye cone cells and having a harmfulness on said eye cone cells under a predefined maximum threshold.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: March 11, 2025
    Assignees: Essilor International, Sorbonne Université
    Inventors: Mélanie Marie, Serge Picaud, Valérie Fradot, José Sahel, Thierry Villette, Coralie Barrau, Camille Ehrismann
  • Patent number: 12248298
    Abstract: The invention relates to a method for outputting a manufacturing file for producing an optical element (100) from a curable material (50) by using an additive manufacturing technology, comprising the steps of:—acquiring the desired geometry of the optical element,—obtaining a discretization of the desired geometry in volume units described by data relative to position parameters of the volume units and to the dimension of the volume units,—associating at least a volume unit with a kinetic parameter that relates to the curing pace imposed to the curable material of the volume unit,—producing, using at least one processor, a manufacturing file comprising said data and said kinetic parameter for manufacturing at least the optical element, and—outputting said manufacturing file.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: March 11, 2025
    Assignee: Essilor International
    Inventors: Maxime Lecompere, Pierre Leite, Manuel Theodet, Loïc Quere
  • Publication number: 20250072750
    Abstract: A retinoscopic aid device for use with a portable streak retinoscope and with an automated phoropter for testing an individual's eye. The retinoscopic aid device includes a base plate configured to be detachably fastened to the automated phoropter, an optical display unit configured to display an orientable straight line mark, the optical display unit being supported by the base plate, and a control unit of the optical display unit which is configured to orient the straight line mark of the optical display unit according to a control command of a user allowing the user to orient the straight line mark according the streak orientation of the portable streak retinoscope when looking through the portable retinoscope.
    Type: Application
    Filed: September 6, 2024
    Publication date: March 6, 2025
    Applicant: ESSILOR INTERNATIONAL
    Inventor: Didier GRAND-CLEMENT
  • Publication number: 20250065583
    Abstract: The disclosure provides post-production methods for functionalization of optical quality films produced by top tier manufactures. The methods disclosed herein allow for the incorporation of different additives into existing films.
    Type: Application
    Filed: October 3, 2024
    Publication date: February 27, 2025
    Applicant: ESSILOR INTERNATIONAL
    Inventor: Zbigniew TOKARSKI
  • Patent number: 12235520
    Abstract: This method for predicting at least one eye gazing parameter of a person wearing visual equipment includes steps of: measuring data of at least two individuals wearing visual equipment, such data including at least head motion parameters and eye gazing parameters of the individuals; measuring head motion parameters of the person in real-life conditions; comparing the head motion parameters of the person with the head motion parameters of the at least two individuals; and predicting the at least one eye gazing parameter of the person at least on the basis of the results of the comparing step and of the eye gazing parameters of the at least two individuals.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: February 25, 2025
    Assignee: Essilor International
    Inventors: Konogan Baranton, Aurélie Le Cain, Sébastien Fricker
  • Patent number: 12233503
    Abstract: A blocking device includes a support member configured for providing a rigid support to the semi-finished optical element, the support member including a support element made of a shape-memory material having a rigid state below a predetermined temperature and a plastic state above the predetermined temperature, and assuming in the absence of external forces a predetermined memory shape when heated above the predetermined temperature, the support member having a contact face onto which the first face of the optical element is to be applied, the contact face of the support member being a surface of the support element, the shape-memory material being configured for having adherence properties with respect to the first face of the optical element, the adherence properties being sufficient for attaching the first face of the optical element to the contact face of the support element.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: February 25, 2025
    Assignee: Essilor International
    Inventors: Sébastien Pinault, Luc Martin, Jérôme Moine, Xavier Bultez
  • Patent number: 12233611
    Abstract: A method of manufacturing an optical lens (417, 901), comprising: obtaining (S301) a transparent thermoplastic (TP) carrier (410, 1210) with at least one smooth surface; printing (S305), via a 3-D printer on the side opposite to the at least one smooth surface of the transparent TP carrier (410, 1210), at least one transparent layer (420, 1220) using a thermoplastic filament (403), each transparent layer (420, 1220) having a predetermined light filtering property, thereby forming a functional layer (420, 1220); and performing (S307) an injection over-molding process (415) to fuse bond the functional layer (420, 1220) to a thermoplastic substrate thereby forming the optical lens, wherein the at least one smooth surface of the transparent TP carrier (410, 1210) forms a smooth surface of the manufactured optical lens (417, 901).
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: February 25, 2025
    Assignee: Essilor International
    Inventors: Hao Wen Chiu, Aref Jallouli, Haifeng Shan
  • Patent number: 12235525
    Abstract: Disclosed are optical elements and the methods of producing the same. The optical element contains two or more near infrared absorbers mixed in an optical substrate, and one or more functional film disposed on the optical substrate. The method of producing the optical element comprises mixing two near infrared absorbers with different near infrared wavelengths absorption ranges and residual colors with a precursor of an optical substrate. The mixture is subsequently processed to produce an optical element that has broad near infrared wavelength absorption range, a high near infrared absorption level, and/or homogeneous color distribution.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: February 25, 2025
    Assignee: Essilor International
    Inventors: Haifeng Shan, Hao-Wen Chiu
  • Publication number: 20250060514
    Abstract: The invention relates to an optical lens comprising a substrate having a front main face and a rear main face, at least one main face of which being successively coated with a first high refractive index sheet which does not comprise any Ta2O5 layer, a second low refractive index sheet a third high refractive index sheet, a monolayer sub-layer having a thickness higher than or equal to 100 nm, and a multilayer interferential coating comprising a stack of at least one high refractive index layer and at least one low refractive index layer. A mean reflection factor selected from Ruv for UV light, Rv for visible light and RsNIR for near infrared light is higher than or equal to 10-15% on at least one main face.
    Type: Application
    Filed: November 4, 2024
    Publication date: February 20, 2025
    Applicant: ESSILOR INTERNATIONAL
    Inventors: Christophe VALENTI, Frédéric GUILLAIN, William TROTTIER-LAPOINTE
  • Patent number: 12226951
    Abstract: The disclosure includes core-shell filament composition for additive manufacturing of ophthalmic lenses and ophthalmic lens components. The disclosure also includes a set of criteria for selecting core and shell thermoplastic combinations that exhibit high optical clarity, improved filament inter-strand diffusion, high inter-strand adhesion, and improved manufactured part strength when used in an additive manufacturing method like fused deposition modelling.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: February 18, 2025
    Assignee: Essilor International
    Inventors: Haifeng Shan, Hao-Wen Chiu, Aref Jallouli
  • Patent number: 12226870
    Abstract: An application device is configured to clean grinding surfaces in a machine for grinding ophthalmic lenses, the application device including: a central portion having so as to mount the application device in the grinding machine; and a peripheral edge configured to receive an application surface to cooperate with the grinding surface of the grinding wheel so as to clean the grinding surface. It also relates to a cleaning kit including an application device and a cleaning solution, and to a method for cleaning grinding surfaces.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: February 18, 2025
    Assignee: Essilor International
    Inventors: Jean-Etienne Lepage, Sebastien Pinault
  • Patent number: 12226968
    Abstract: Disclosed herein is an injection molding method for making optical thermoplastic lenses using 3D—printed functional wafers. The method employs a variable injection molding cavity temperature that is heated to at least wafer Tg—10° C.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: February 18, 2025
    Assignee: Essilor International
    Inventors: Haifeng Shan, Aref Jallouli, Hao-Wen Chiu
  • Publication number: 20250053026
    Abstract: A system for determining a modification of an initial myopia control solution used by a myopic subject, comprising one or more memories having in memory values of individual features of said myopic subject and values of environmental parameters relative to conditions of use by said myopic subject of said initial myopia control solution and comprising one or more processors programmed to: determine an individual score linked to a role of said individual features in causing the myopia of said myopic subject, said individual score depending on said values of individual features, determine an environmental score linked to a role of said environmental parameters in causing the myopia of said myopic subject, said environmental score depending on said values of said environmental parameters, and determine said modification of said initial myopia control solution for said subject based on said individual and environmental scores.
    Type: Application
    Filed: December 8, 2022
    Publication date: February 13, 2025
    Applicant: Essilor International
    Inventors: Björn DROBE, Gilles GARCIN, Jean-Luc PERRIN, Damien PAILLE
  • Publication number: 20250053025
    Abstract: A lens element intended to be worn in front of an eye of a wearer, the lens element being adapted to provide a prescribed dioptric correction function in a prescription plane, the lens element including an arrangement of microoptical elements. When receiving a collimated beam of monochromatic light, the lens element is configured to produce a primary luminous intensity maximum in a prescription plane, and the arrangement of microoptical elements is configured to produce at least one first secondary luminous intensity maximum at a first proximity difference from the prescription plane and at least one second secondary luminous intensity maximum at a second proximity difference from the prescription plane, the first proximity difference and the second proximity difference having opposite signs.
    Type: Application
    Filed: December 16, 2022
    Publication date: February 13, 2025
    Applicant: Essilor International
    Inventors: Eric GACOIN, Matthieu GUILLOT, Bruno FERMIGIER, Aude BOUCHIER