Charenton-le-pont, France
Charenton-le-pont, France

Essilor International S.A. is a French company that produces ophthalmic lenses along with ophthalmic optical equipment. It is based in Paris, France, and quoted on the Euronext Paris Stock Exchange. As one of the 40 largest companies traded in Paris, it is a component of the CAC 40 share index.Essilor is responsible for creating Varilux, the world's first progressive lens which corrects presbyopia and allows clear vision in the wearer's near, intermediate and far vision. The company formed from the merger of ophthalmic firms Essel and Silor in 1972. Essilor now operates in over 100 countries over five continents. Its activities are largely focused on research and development. It is the world's largest manufacturer of ophthalmic lenses. Wikipedia.

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The invention relates to a method for obtaining a material (10) comprising mesogenic compounds (101) forming a liquid crystal mix with a stabilized blue phase (100), comprising the following steps:a) preparing a chemical composition comprising a mesogenic system and a chemical photo-initiator system, the mesogenic system including- said mesogenic compounds forming the liquid crystal mix,- a chiral dopant adapted to induce said blue phase, and- a monomer mix comprising monomers adapted to polymerize,and the chemical photo-initiator system being adapted to trigger the polymerization of said monomers when illuminated by a light beam of visible wavelength;b) getting said liquid crystal mix to form said blue phase;c) after getting said liquid crystal mix into said blue phase, illuminating the chemical composition obtained in step a) with a light beam of visible wavelength in order to trigger the polymerization of said monomers;d) obtaining said material comprising said liquid crystal mix in the blue phase stabilized by the polymerized monomers.


The present invention relates to a group of novel electrochromic compounds. More specifically, it relates to electrochromic compounds comprising one or several pyridinium rings and the use of these compounds as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens.


Patent
Essilor | Date: 2017-01-04

A head mounted device comprising:- a frame to be worn on a wearers head,- at least one camera mounted on the frame and arranged to acquire images of the environment around the wearer when the frame is worn by the wearer,- a audio source identification module arranged to identify at least one audio source in the environment around the wearer from the acquired images of the environment around the wearer,- at least one audio acquisition module configured to acquire an audio signal corresponding to an audio source identified by the audio source identification module.


The invention relates to a display managing method for managing the display of an image from a source image (2) to a user of an optical see-through displaying device, the source image (2) comprising a plurality of zones (4, 6), the method comprises:- a display data providing step (S1), during which display data relative to at least one intrinsic display parameter of the optical see-through displaying device are provided,- a source image data providing step (S2), during which source image data are provided, the source image data comprising for each zone (4, 6) at least an indication of the value of the zone brightness of the source image (2), and- a displayed image data determining step (S3), during which displayed image data are determined, the displayed image data comprising for each zone (4, 6) at least an adjusted value of the zone brightness determined based on a non-linear function of at least the display data and the source image data.


Patent
Essilor | Date: 2017-01-04

A visual fatigue determining module (10) configured to determine visual fatigue level of a user, the module comprising at least:- a communication component (12) configured to receive from a visual fatigue determining device, visual behavior data indicative of the at least one visual behavior parameter of the user,- a memory (14) configured to store computer executable instructions; and- a processor (16) for executing the computer executable instructions, wherein the computer executable instructions comprises instructions for:- processing the visual behavior data to generate visual fatigue information indicative of the visual fatigue level of the user.


An optical article provided in a form suitable for simultaneous lamination of a pressure sensitive adhesive layer and of a thermoplastic film, the said optical article comprising a convex and a concave optical surface, wherein the convex and/or the concave optical surface is a receiving surface intended to receive the pressure sensitive adhesive on which the thermoplastic film is intended to be arranged and wherein the said receiving surface has an arithmetic average profile roughness greater or equal to 0.01 m and less or equal to 0.3 m and/or wherein the said receiving surface has a profile roughness root mean square slope greater or equal to 0.2 and less or equal to 1.2. A method for manufacturing an optical device using said optical article.


Method for determining a parameter of an optical equipment, the method comprising:- an optical equipment positioning step, during which an optical equipment comprising a pair of optical lenses mounted on a spectacle frame is positioned in a first position,- a portable electronic device positioning step, during which a portable electronic device comprising an image acquisition module is positioned in a second position determined and/or known relatively to the first position so as to acquire an image of a distant element seen through at least part of the optical lenses of the optical equipment in the first position,- a parameter determining step, during which at least one optical parameter of the optical equipment is determined based on the image of a distant element seen through at least part of the optical lenses of the optical equipment in the first position.


Patent
Essilor | Date: 2017-01-04

A vision monitoring module configured to be fixed, for example removably, on a spectacle frame, the module comprising:- at least one sensor adapted to sense at least one parameter relating to the user of the spectacle frame that can be used to personalize an optical equipment for the user,- at least one communication unit adapted to communicate data indicative of the at least one parameter sensed by the at least one sensor to a monitoring component.


A method of managing personalization data (PD) related to a wearer (WEA) of spectacles (SP) and/or to said spectacles (SP), said spectacles (SP) comprising a frame (FR) and spectacles lenses (LEN) carried by said frame. The method comprises:- storing at least part of said personalization data (PD) in a data support (DS) for subsequent retrieval,- adding the data support (DS) to said spectacles (SP) or to an item (IT) associated to said spectacles to be carried by said wearer along with said spectacles (SP).


Grant
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: PHC-22-2015 | Award Amount: 6.87M | Year: 2016

Mental, cognitive, vision and hearing health problems in elderly people are amongst the top 10 public health challenges in Europe. They frequently occur co-concurrently and have an additive negative effect on quality of life and mental well-being. To address this negative impact, and promote mental well-being, particularly from a gender and minority community perspective, SENSE-Cogs aim is to: (1) understand the inter-relationship of sensory impairments and cognitive and mental health functioning; (2) identify novel means of screening/detection for diagnostic and therapeutic purposes; and (3) translate this knowledge into clinical applications for the mental well-being of EU citizens. Methods: SENSE-Cog will use a mixed methods approach with a trans-EU, UK-led, multidisciplinary collaboration of 7 EU countries with academics, SMEs, city government and patient-public voice members. We will deliver linked Work Packages (WPs) reflecting 7 themes: (1) exploration: an epidemiological analysis of 5 large EU longitudinal databases to detect risk profiles for good and poor mental health outcomes; (2) assessment: the adaptation/validation of assessment tools for cognition and sensory impairment for vulnerable populations, including the development of a composite e-screen for sensory, cognitive and mental functioning; (3) intervention: a clinical trial of a newly developed sensory support intervention; (4) participation: an EU patient and public voice and innovative public engagement network to inform the WPs and communicate findings; (5) valuation: health economic and cost effectiveness analyses; & (6) management, governance/ethics. Impact: SENSE-Cog will promote earlier detection of sensory, cognitive and mental impairments to enable swift interventions, prevent deterioration and limit negative impacts.

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