An optical lens intended to be worn in front of an eye of a wearer, the optical lens comprising: - a refractive area having at least a first refractive power based on a prescription adapted for the eye of the wearer, - at least a first set of optical elements, each optical element of said first set of optical elements having at least a refractive power PB different from the first refractive power, and comprising at least a red filtering function, the red filtering function reducing the transmittance of wavelengths of light greater than or equal to 550 nm, and - at least a second set of optical elements, each optical element of said second set of optical elements having at least a refractive power PR different from the first refractive power, and comprising at least a blue filtering function, the blue filtering function reducing the transmittance of wavelengths of light comprised between 380 nm and 500 nm
The present invention relates to a curable composition for additive manufacturing processes, especially vat technologies, comprising at least a polymerizable composition and a photoinitiator for the manufacture of optical articles, especially ophthalmic articles. The present invention also relates to a method of manufacturing a three-dimensional (3D) optical article from the curable composition.
B33Y 70/00 - Matériaux spécialement adaptés à la fabrication additive
G03F 7/00 - Production par voie photomécanique, p. ex. photolithographique, de surfaces texturées, p. ex. surfaces impriméesMatériaux à cet effet, p. ex. comportant des photoréservesAppareillages spécialement adaptés à cet effet
G03F 7/027 - Composés photopolymérisables non macromoléculaires contenant des doubles liaisons carbone-carbone, p. ex. composés éthyléniques
B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
An optical lens intended to be worn in front of an eye of a wearer, the optical lens comprising: - a refractive area having at least a first refractive power based on a prescription adapted for the eye of the wearer, - at least a first set of optical elements, each optical element having at least a second refractive power different from the first refractive power of the refractive area, characterized in that the refraction area and the plurality of optical elements have different transmission spectrums, and at least part of the optical elements comprise at least a red filtering function, the red filtering function reducing the transmittance of wavelengths of light greater than or equal to 550 nm.
A system (100) for determining a characterization of at least one parameter of an eye model for a patient's eye (101), comprises an optical coherence tomography device, an aberrometer and a double-pass channel (10) which is common to the optical coherence tomography device and the aberrometer. An optical direction that is common to an illumination beam (B0) injected into the patient's eye and to a return beam (BR) recovered from the patient's eye can be varied. The characterization is determined from measured values of an optical path length and measured features of a wavefront relating to at least two angular positions of the common optical direction. Using at least two angular positions for the common optical direction increases accuracy and reliability of the determined characterization.
A61B 3/00 - Appareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux
A61B 3/10 - Appareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux du type à mesure objective, c.-à-d. instruments pour l'examen des yeux indépendamment des perceptions ou des réactions du patient
A61B 3/107 - Appareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux du type à mesure objective, c.-à-d. instruments pour l'examen des yeux indépendamment des perceptions ou des réactions du patient pour déterminer la forme ou mesurer la courbure de la cornée
5.
METHOD FOR MANUFACTURING BY MOLDING AN OPHTHALMIC DEVICE AND APPARATUS CONFIGURED TO EQUIP A MANUFACTURING SYSTEM FOR MOLDING THE OPHTHALMIC DEVICE
The disclosure relates to a method for manufacturing by molding an ophthalmic device, comprising providing a molding shell comprising molding portions at least partially moveable one relative to each other in a predetermined direction; providing (121) a locking device configured to indivually lock in position and unlock the molding portions; providing (122) a single actuating and supporting member configured to be at least temporarily connected to the molding portions and to move each of the molding portions from a rest position to an individual determined position of molding; displacing (124) the single actuating and supporting member from an initial position in which the molding portions are unlocked and connected to the actuating and supporting member in the respective rest position, to a final position in which the molding portions have been moved to reach the respective individual determined positions of molding wherein the molding portions are locked in position and disconnected from the actuating and supporting member.
System for determining an updated value of at least one characteristic of a head-mountable device System for determining an updated value of at least one characteristic of a head-mountable device. The system is configured to obtain a value of at least one adaptation parameter, the at least one adaptation parameter representing an adaptation of the head-mountable device to a user, to determine a value of an adaptation probability of the head-mountable device to the user when wearing the head-mountable device based on the value of the at least one adaptation parameter, and to determine, based on the value of the adaptation probability, the updated value of the at least one characteristic of the head-mountable device.
Method for manufacturing an optical article with encapsulated microstructures (64) comprising the steps of: - providing a covering layer (56) having microstructures (58) on the concave surface, the covering layer (56) comprising a first transparent thermoplastic material (52); - depositing, on said micro-structured surface, a second transparent thermoplastic material (60) having a refractive index (RILens) higher than a respective refractive index (RIWafer) of the first transparent thermoplastic material (52) and a glass transition temperature (TgLens) equal to or lower than a respective glass transition temperature (TgWafer) of the first transparent thermoplastic material (52), thus obtaining a support layer (62) which encapsulates the microstructures (58), the support layer (62) forming, together with said covering layer (56), said optical article with encapsulated microstructures (64).
Method for objectively assessing a level of sensitivity to a light entering at least one eye of a subject, comprising steps: a) measuring and recording a cortical activity signal of a cortex of a head of the subject while the at least one eye of the subject receives a given light intensity during a given measuring and recording time, b) processing the recorded cortical activity signal to obtain a useful signal and to identify, from the useful signal, a specific cortical signature indicative of a sensitivity to light, c) assessing whether the specific cortical signature correlates with a hypo-sensitivity to light or a hyper-sensitivity to light state of the subject by comparing the specific cortical signature to a predefined threshold parameter of the specific cortical signature, wherein the given light intensity is less or equal to 50 lux and that the given measuring and recording time is less than or equal to 350 ms.
A61B 3/06 - Appareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux du type à mesure subjective, c.-à-d. appareils de d’examen nécessitant la participation active du patient pour examen de sensibilité à la lumière, p. ex. d'adaptationAppareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux du type à mesure subjective, c.-à-d. appareils de d’examen nécessitant la participation active du patient pour examen de vision des couleurs
Method for objectively assessing discomfort glare or disability glare of a subject, comprising the steps of (a) measuring and recording a cortical activity signal of the subject while at least one eye of the subject receives a given light condition during a time comprised between 100 ms and 500 ms, (b) processing the recorded cortical activity signal to obtain a useful signal and to identify, from the useful signal, at least one specific cortical signature, c) determining whether the subject is or not in a no-glare or a discomfort glare or disability glare state by comparing the specific cortical signature to at least one predefined threshold parameter of the specific cortical signature that is characteristic of a shift from no-glare state to discomfort glare state or disability glare state. The useful signal which is used to identify the specific cortical signature in step (b) comprises a gamma frequency band between 30 Hz and 49 Hz.
A61B 3/06 - Appareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux du type à mesure subjective, c.-à-d. appareils de d’examen nécessitant la participation active du patient pour examen de sensibilité à la lumière, p. ex. d'adaptationAppareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux du type à mesure subjective, c.-à-d. appareils de d’examen nécessitant la participation active du patient pour examen de vision des couleurs
The invention relates to an ophthalmic lens (10) having a rotating point and a vertical line (VL) passing through said rotating point, and providing at a far vision point (FVP) at least a non-zero cylindrical power oriented according to a nominal cylinder axis relative to said vertical line and in a near vision area (11) a non-zero addition of spherical power. According to the invention, said ophthalmic lens is suitable for a range of prescriptions of cylinder axis of at least 20° about said nominal cylinder axis.
G02C 7/06 - VerresSystèmes de verres bifocauxVerresSystèmes de verres multifocaux
B24B 9/14 - Machines ou dispositifs pour meuler les bords ou les biseaux des pièces ou pour enlever des bavuresAccessoires à cet effet caractérisés par le fait qu'ils sont spécialement étudiés en fonction des propriétés de la matière propre aux objets à meuler de matière inorganique non métallique, p. ex. de la pierre, des céramiques, de la porcelaine du verre de pièces optiques, p. ex. de lentilles, de prismes
B24B 13/005 - Dispositifs de blocage, supports ou similairesDispositifs d'alignement
12.
AN OPTICAL LENS TO SLOW DOWN THE PROGRESSION OF VISION IMPAIRMENT
An optical lens to slow down the progression of vision impairment An optical lens intended to be worn in front of an eye of a wearer to correct a vision impairment and to slow down the progression of said vision impairment of an eye of a wearer, said ophthalmic optical lens having a substrate, a front surface and a back surface, said ophthalmic optical lens comprises a plurality of optical elements, wherein: at least one light ray passing through the optical lens over a pupil having at least a 4 mm diameter passes through at least one of the plurality of optical elements, wherein over the said pupil the optical lens produces a first optical path map (OPD1), a best atorical form fitting of the first optical path map (OPD1) produces a second optical path difference map (OPD2), a differential optical path map (DOP) being composed as the difference between said first optical path difference map (OPD1) and said second optical path difference map (OPD2), each optical element produces constant phase shifting so that the differential optical path map (DOP) is a piecewise constant surface of at least two levels and at least part of the at least two levels is spatially randomly distributed.
Device intended to be worn by an individual, the device being configured to detect that the individual is suffering from a headache A device, head-mountable device, system and computer implemented method, the device being intended to be worn by an individual, the device being configured to detect that the individual is suffering from a headache, the device being further configured to obtain values of a parameter of a vibration of a vessel of the individual, to detect a variation of the values of the parameter of the vibration of the vessel, when the variation is detected, the device is also configured: to obtain a value of a physiological parameter of the individual, to compare the value of the physiological parameter of the individual with a threshold and to detect the headache based on the comparison.
A method for manufacturing a thermoset ophthalmic lens that includes a wafer (13) comprises forming a sub-assembly comprised of one mould part (101), the wafer and at least one glue portion (30). Each glue portion may connect a bulging area of the wafer to the mould part. The sub-assembly can then be used to form a complete lens mould (100). The invention method alleviates drawbacks of previous methods, in particular reducing waste of thermoset material.
A method for manufacturing an ophthalmic lens that includes a wafer (13) and two thermoset material portions comprises forming a sub-assembly that is comprised of one mould part (101), the wafer and a continuous glue string (30). The glue string connects a peripheral edge of the wafer to the mould part, thereby forming a first cavity (C1). Said first cavity is filled with monomer-containing liquid and sealed. The sub-assembly can then be used to form a complete lens mould (100). The method alleviates drawbacks of previous methods, in particular when the wafer spontaneously curls.
The invention relates to a method (100) for determining a parameter of a progression profile (320, 420, 610, 620) for an eyepiece (710) intended for a user, the method comprising: obtaining (110) a prescription for the user, the prescription being indicative of at least an optical power suitable for far vision, measuring (140) or estimating (160) a remaining accommodation of the user, said remaining accommodation corresponding to the shorter distance for which the user corrected for far vision manages to have a sharp vision, and determining (170) a parameter of the progression profile based on both the prescription and the remaining accommodation.
The invention relates to a UV-curable, inkjet transparent composition comprising at least one free-radical photoinitiator, at least one surfactant and a polymerizable composition containing at least a mixture of : - 40 to 60 weight % of a first polymerizable component - 40 to 60 weight % of a second polymerizable component with the weight percentage wt% based on the total weight of the polymerizable composition and, wherein, • The first polymerizable component is of formula (I), (II), or (III) • The second polymerizable component is of formula (IV).
C09D 11/101 - Encres spécialement adaptées aux procédés d’imprimerie mettant en œuvre la réticulation par énergie ondulatoire ou par radiation de particules, p. ex. réticulation par UV qui suit l’impression
C09D 11/30 - Encres pour l'impression à jet d'encre
C09D 11/38 - Encres pour l'impression à jet d'encre caractérisées par des additifs non macromoléculaires autres que les solvants, les pigments ou les colorants
18.
ADDITIVE MANUFACTURING METHOD FOR AN OPTICAL ARTICLE WITH IMPROVED SURFACE QUALITY
The invention relates to a method of manufacturing an optical article with smoothed top surface having an accurate optical surface including the steps of: - manufacturing an optical article by polymerizing a polymerizable material during an additive manufacturing process, said additive manufacturing process being performed such that the optical article comprises an unfinished top surface, said unfinished top surface having a relief pattern formed by traces of the additive manufacturing process, having at least one depression with regard to a mean curved surface of the surface and being constituted of non-polymerized material, - spinning the article with the unfinished top surface such that said non-polymerized material spreads out to substantially cover the entire top surface of the article and forms a layer of non- polymerized material, - polymerizing the layer of non-polymerized material.
B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
B29C 64/106 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p. ex. dépôt d’un cordon continu de matériau visqueux
B29C 64/188 - Procédés de fabrication additive impliquant des opérations supplémentaires effectuées sur les couches ajoutées, p. ex. lissage, meulage ou contrôle d’épaisseur
B33Y 40/20 - Posttraitement, p. ex. durcissement, revêtement ou polissage
TieTieWaferWaferLensLensTieTieTie) of the second optical thermoplastic material (60) of the tie-layer (62), thus obtaining a body layer (68), the support layer (56), the tie-layer (62) and the body layer (68) forming altogether said micro-structured optical article (70).
WaferWaferLensLensLens) of the first optical thermoplastic material (52), thus obtaining a covering layer (62) which encapsulates the microstructures (58), the support layer (56) being thicker than the covering layer and forming, together with said covering layer (62), said optical article with encapsulated microstructures (64).
B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
B29C 45/40 - Démoulage ou éjection des objets formés
B29C 45/14 - Moulage par injection, c.-à-d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule ferméAppareils à cet effet en incorporant des parties ou des couches préformées, p. ex. moulage par injection autour d'inserts ou sur des objets à recouvrir
21.
OPTICAL ARTICLE COMPRISING A HIGH REFRACTIVE INDEX ABRASION- AND/OR SCRATCH-RESISTANT COATING HAVING A LOW SENSITIVITY TO ENVIRONMENTAL CONDITIONS
The invention relates to a curable composition for an abrasion-and/or scratch-resistant coating, comprising at least one epoxy compound bearing at least one silicon atom having at least one hydrolyzable group directly linked to the silicon atom and at least one group comprising an epoxy function linked to the silicon atom through a carbon atom, and/or a hydrolyzate thereof, at least one silane compound of formula Z1Z2SiR1R2, and/or a hydrolyzate thereof, in an amount of 1 to 10 %, relative to the dry extract weight of the composition, in which Z1and Z2independently represent a hydrolyzable group or a hydrogen atom, R1and R222 2222) ranging from 35 % to 75 %. The resulting coating can be formed on an optical article.
A ring (2) for coating an optical article, the ring (2) comprising a lower ring portion (4), an upper ring portion (8), which has an angular extension lower than 180° and is vertically aligned with the lower ring portion (4), and a middle portion (6) placed between the lower ring portion (4) and the upper ring portion (8); wherein the lower ring portion (4) and the upper ring portion (8) have respective internal inclined sides (32, 36) arranged to hold the optical article, and wherein the middle ring portion (6) forms a projection (44) protruding radially outwards with respect to the lower ring portion (4) and the upper ring portion (8), so that the ring (2) is connectable to a coating machine via said projection (44).
B05C 3/09 - Appareillages dans lesquels un ouvrage est mis en contact avec une grande quantité de liquide ou autre matériau fluide l'ouvrage étant immergé dans le liquide ou autre matériau fluide pour traiter des objets individuels
B05C 13/02 - Moyens pour manipuler ou tenir des objets, p. ex. des objets individuels pour des objets particuliers
(IF1)(IF2)(IF1)(IF2)(IF2)| ≤ 0.8 %, preferably ≤ 0.7 %, in particular ≤ 0.6 %, typically ≤ 0.5 %, such as ≤ 0.2 %., wherein the refractive indexes being expressed at 25°C at a wavelength of 550 nm, and wherein the mean light reflection factors in the visible region Rv is defined in the ISO 13666:1998 Standard and is measured in accordance with the ISO 8980-4.
The invention concerns a method implemented by computer means for determining an ophthalmic lens intended to be worn by a non-esophoria individual, said ophthalmic lens being adapted to provide to the individual a vision correction at at least two different distances, said vision correction being based on wearer data including prescription data of the individual. The method comprises the following steps: receiving binocular visual parameters of the individual; calculating an addition value for the individual based on their binocular visual parameters; defining said ophthalmic lens based on said wearer data and on the calculated addition value.
A lens element intended to be worn in front of an eye of a wearer, the lens element comprising: a holder, and a plurality of optical elements superimposed on the holder, each optical element providing simultaneously a first optical function based on a prescription of the wearer for correcting an abnormal refraction of said eye and a second optical function of not focusing an image on the retina of said eye, characterized in that each optical element comprises a central area and a plurality of outer areas surrounding the central area, wherein the maximal height of the central area is smaller than the maximal height of the outer areas
A myopia control device comprising a first optical function correcting an abnormal refraction of an eye of a wearer and a second optical function slowing down the development of an abnormal refraction of an eye of a wearer, characterized in that the myopia control device is used as a first prescription device to slow down the development of an abnormal refraction of an eye
The invention relates to a method of determining parameters for trimming an optical lens in view of its mounting in a spectacle frame (20) in which at least one reference lens (10) is mounted, comprising: a step of acquiring at least one image of said reference lens, and a step of processing said image in order to deduce therefrom trimming parameters for trimming the optical lens, wherein the method also comprises, before said step of acquiring, a step of marking during which an individual makes at least one mark (32) on said reference lens, and wherein, during said step of processing, at least one trimming parameter is deduced from said at least one mark.
B24B 9/14 - Machines ou dispositifs pour meuler les bords ou les biseaux des pièces ou pour enlever des bavuresAccessoires à cet effet caractérisés par le fait qu'ils sont spécialement étudiés en fonction des propriétés de la matière propre aux objets à meuler de matière inorganique non métallique, p. ex. de la pierre, des céramiques, de la porcelaine du verre de pièces optiques, p. ex. de lentilles, de prismes
B24B 49/03 - Appareillage de mesure ou de calibrage pour la commande du mouvement d'avance de l'outil de meulage ou de la pièce à meulerAgencements de l'appareillage d'indication ou de mesure, p. ex. pour indiquer le début de l'opération de meulage comparant la cote instantanée de la pièce travaillée à la cote cherchée, la mesure ou le calibrage étant continus ou intermittents fonctionnant selon la cote finale de la pièce précédemment rectifiée
B24B 49/12 - Appareillage de mesure ou de calibrage pour la commande du mouvement d'avance de l'outil de meulage ou de la pièce à meulerAgencements de l'appareillage d'indication ou de mesure, p. ex. pour indiquer le début de l'opération de meulage impliquant des dispositifs optiques
G01B 11/24 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des contours ou des courbes
G01B 11/25 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des contours ou des courbes en projetant un motif, p. ex. des franges de moiré, sur l'objet
The invention relates to a method (P) for generating, by an integrator (I), an encrypted binary executable file involving compiling software libraries using a development library from an SDK. The libraries, provided by providers (V), are intended for an embedded digital signal processor. The method comprises: determining a group encryption key and sharing it between the integrator and the providers. Each provider determines a specific secret and encrypts its libraries with a symmetric algorithm using this secret and the group key. The development library compiles the encrypted libraries after retrieving the providers' secrets. The binary executable file is then encrypted with the symmetric algorithm using the group key and a final secret derived from the providers' secrets.
H04L 9/06 - Dispositions pour les communications secrètes ou protégéesProtocoles réseaux de sécurité l'appareil de chiffrement utilisant des registres à décalage ou des mémoires pour le codage par blocs, p. ex. système DES
This device (12) for manipulating at least one ophthalmic lens (10) comprises a translational and rotational motion unit, movable in translation and in rotation according to three mutually orthogonal directions and a chuck (14) fixed on the translational and rotational motion unit. The chuck (14) comprises: a plurality of holders (16) movable in translation according to a direction orthogonal to a face of the at least one ophthalmic lens (10), at least one holder of the plurality of holders (16) being provided with a vacuum propagating element enabling that holder to grip the face of the at least one ophthalmic lens (10); and a plurality of holder control elements (18), each holder control element (18) being adapted to either impede, or allow translation movement of a holder of the plurality of holders (16).
B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
B23Q 7/04 - Agencements pour la manipulation des pièces, spécialement combinés aux machines-outils ou disposés dans ces machines ou spécialement conçus pour être utilisés en relation avec ces machines, p. ex. pour le transport, le chargement, le positionnement, le déchargement, le triage au moyen de pinces
B25J 15/06 - Têtes de préhension avec moyens de retenue magnétiques ou fonctionnant par succion
B24B 13/005 - Dispositifs de blocage, supports ou similairesDispositifs d'alignement
B65G 47/91 - Dispositifs pour saisir et déposer les articles ou les matériaux comportant des pinces pneumatiques, p. ex. aspirantes
G03F 7/00 - Production par voie photomécanique, p. ex. photolithographique, de surfaces texturées, p. ex. surfaces impriméesMatériaux à cet effet, p. ex. comportant des photoréservesAppareillages spécialement adaptés à cet effet
B24B 41/06 - Supports de pièces, p. ex. lunettes réglables
The disclosure relates to a system for obtaining an image quality parameter of an eyepiece suitable for being disposed in an augmented and/or virtual reality head mountable device, the eyepiece comprising at least one non-plano lens and one pattern generating module, the system comprising an image capture system (ICS) designed to acquire images within a specific angular range which is smaller than the total field of view of the eyewear, the ICS comprising a variable focus control unit (VFCU), each image showing a specific pattern generated by the pattern generating module and transmitted by the lens, the system being configured to utilize the ICS to acquire the images from varied orientations simulating eye movements of a user while operating the VFCU to maintain, for each image, sharpness of the specific pattern showed on said image across at least one predetermined orientation, and the system being configured to obtain at least one image quality parameter determined from the acquired images, where the parameter is indicative of a quality of images as perceived through the eyepiece.
The present invention relates to a method of fast curing a polythiourethane based transparent substrate, comprising in one of its embodiments providing a first component (A) comprising a polythiourethane pre-polymer (A1) having isocyanate or isothiocyanate end groups, providing a second component (B) comprising a polythiourethane pre-polymer (B1) having thiol end groups, mixing together first and second components (A) and (B) to form a polymerizable mixture, curing said mixture to obtain a transparent substrate, wherein at least one photo-activatable latent catalyst composed of a quaternary ammonium or quaternary iminium cation and a borate anion is added in the process prior to the curing step, and said latent catalyst is subsequently photo- activated to carry out a polymerization reaction forming the polythiourethane-based transparent substrate.
C08G 18/10 - Procédés mettant en œuvre un prépolymère impliquant la réaction d'isocyanates ou d'isothiocyanates avec des composés contenant des hydrogènes actifs, dans une première étape réactionnelle
G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
C08G 18/18 - Catalyseurs contenant des amines secondaires ou tertiaires ou leurs sels
32.
DEVICE AND PROCESS FOR MANUFACTURING AN OPTICAL LENS WITH LIQUID MOLDS
The invention relates to a device (10) for manufacturing an optical lens, comprising: - a tank (100) defining internally a chamber (101) suitable for being filled with a liquid, - a ring (150) that defines internally a formation volume (151) suitable for receiving a material of formation of the optical lens, and that is held into said tank, and - a compartment divider (140) surrounding said ring and dividing said chamber into an upper subdivision and a lower subdivision.
A method for annealing a lens made of plastic material is disclosed, as well as a method for manufacturing a lens made of plastic comprising said method for annealing, wherein said method for annealing is conducted on a lens obtained by casting or injection molding of a plastic material, prior to conducting the lens finishing steps, such as surfacing, among others.
G02F 1/1523 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p. ex. commutation, ouverture de porte ou modulationOptique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur un effet électrochromique caractérisés par le matériau électrochromique, p. ex. par le matériau électro-déposé comprenant un matériau inorganique
An optical lens intended to be worn in front of an eye of a wearer to correct a vision impairment and to slow down the progression of said vision impairment, the optical lens comprising a pattern of microstructures, wherein over a pupil area having a diameter equal to or greater than 4.0 mm and including at least part of the microstructures, the optical lens produces a first optical path difference map (OPD1), wherein over said pupil area, the pattern of microstructures produces constant phase shifting so that the differential optical path map (DOP), being the difference between said first optical path difference map (OPD1) and a second smooth optical path difference map (OPD2), is a piecewise constant of at least two levels, characterized in that over said pupil area, an image quality (Q1) measured at a first wavelength (λ1) is at least 10% lower than a retinal image quality (Q2) measured at a second wavelength (λ2).
The disclosure relates to a for adapting thickness of an initial lens based on peripheral thickness or width determined constraint Said determined constraint enable to determine a target zone of the initial lens to be modified. Said lens being modified over the targeted zone so as to fulfill the peripheral determined constraint.
The present invention relates to a method of fast curing a polythiourethane based transparent substrate, comprising in one of its embodiments providing a first component A comprising a polythiourethane pre-polymer A1 having isocyanate or isothiocyanate end groups, providing a second component B comprising a polythiourethane pre-polymer B1 having thiol end groups, mixing together first and second components A and B to form a polymerizable mixture, curing said mixture to obtain a transparent substrate, wherein at least one heat-activatable latent catalyst composed of a tertiary ammonium or tertiary iminium cation and a borate anion is added in the process prior to the curing step, and said latent catalyst is subsequently activated to accelerate the polymerization reaction forming the polythiourethane-based transparent substrate.
C08G 18/10 - Procédés mettant en œuvre un prépolymère impliquant la réaction d'isocyanates ou d'isothiocyanates avec des composés contenant des hydrogènes actifs, dans une première étape réactionnelle
G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
38.
ACTIVE OPTICAL SYSTEM FOR AN OPHTHALMIC SPECTACLE LENS OR FOR AN AUGMENTED REALITY DEVICE AND METHOD FOR ADJUSTING OPTICAL POWER THEREOF
The invention concerns an active optical system (100) for an ophthalmic spectacle lens or for an augmented reality device. According to the invention, the active optical system (100) comprises a base lens (10) and a stacked structure, the stacked structure comprising at least one active diffractive phase lens (20) having a variable optical power with a minimum optical power variation of at least 0.25 diopter, the stacked structure having a variable total optical power, said active diffractive phase lens presenting in cross-section a plurality of discrete phase levels (21, 22, 23, 24) and activation means (30) for varying the variable optical power of said at least one active diffractive phase lens, the variable total optical power of the stacked structure varying continuously over a determined optical power range or having at least three different values in the determined optical power range, said stacked structure having a total thickness lower than 1 mm.
The disclosure provides a method for additively manufacturing an ophthalmic device delimited by an external surface, comprising inkjet printing (102) at least one first core layer having at least one first predetermined thickness, inkjet printing (103) at least one second core layer at least partially onto the at least one first core layer and having at least one second predetermined thickness equal or different to the first predetermined thickness, inkjet printing (104) at least one edge layer onto the at least one first core layer and adjacent to the at least one second core layer, the at least one edge layer defining at least partially the external surface of the ophthalmic device and having at least one third predetermined thickness lower than or equal to the at least one second predetermined thickness.
B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
B29C 64/112 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p. ex. dépôt d’un cordon continu de matériau visqueux utilisant des gouttelettes individuelles, p. ex. de buses de jet
B29C 64/194 - Procédés de fabrication additive impliquant des opérations supplémentaires effectuées sur les couches ajoutées, p. ex. lissage, meulage ou contrôle d’épaisseur pendant l’empilage des couches
Method for determining values of parameters of an optical system. The optical system comprises a front optical element, a back optical element and a wave guide. The back optical element being intended to be positioned closer to an eye of a wearer of the optical system than the front optical element. The wave guide is between the front optical element and the back optical element. The wave guide has an exit surface being arranged to output an image to the wearer. The method comprises selecting the front optical element among a set comprising a maximum of 6 pre-established front optical elements, determining values of parameters of the back optical element based on an intended power map of the optical system and the selected front optical element. The intended power map is a progressive power map.
The optical system comprises a front optical element, a back optical element and a wave guide. The back optical element is intended to be positioned closer to an eye of a wearer of the optical system than the front optical element. The wave guide is between the front optical element and the back optical element. The wave guide has an exit surface being arranged to output an image to the wearer. The method comprises determining values of parameters of a first part of the front optical element corresponding to the near vision part of the optical system and values of parameters of a second part of the front optical element corresponding to a far vision part of the optical system based on an intended power map of the optical system.
Method for defining an optical lens design of a pair of eyeglasses intended to be worn by a subject, said method comprising at least one iteration of the following steps: a) providing a pair of eyeglasses intended to be worn by the subject, said pair of eyeglasses comprising a first lens intended to be worn in front a first eye of the subject and a second lens intended to be worn in front of a second eye of the subject, each lens of the pair of eyeglasses comprising: i) a refraction area based on a prescribed refractive power, and ii) an arrangement of micro-optical elements, b) after a period of time, collecting data relating to the visual behavior and/or the environment of the subject and determining a value of a myopia progression indicator for at least one eye of the subject. c) defining the optical lens design of the pair of eyeglasses based on the collected data and the value of the myopia progression indicator.
A61B 3/028 - Appareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux du type à mesure subjective, c.-à-d. appareils de d’examen nécessitant la participation active du patient pour examen d'acuité visuelleAppareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux du type à mesure subjective, c.-à-d. appareils de d’examen nécessitant la participation active du patient pour la détermination de la réfraction, p. ex. phoromètres
A61B 3/103 - Appareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux du type à mesure objective, c.-à-d. instruments pour l'examen des yeux indépendamment des perceptions ou des réactions du patient pour la détermination de la réfraction, p. ex. réfractomètres, skiascopes
A61B 3/113 - Appareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux du type à mesure objective, c.-à-d. instruments pour l'examen des yeux indépendamment des perceptions ou des réactions du patient pour déterminer ou enregistrer le mouvement de l'œil
A61B 3/14 - Dispositions spécialement adaptées à la photographie de l'œil
A61B 3/00 - Appareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux
43.
OPHTHALMIC LENS WITH MODIFIED PERIPHERAL CURVATURE VARIATION
Wearable device and method for detection of mouth movements This wearable device (1) worn by a user for detection of mouth movements of said user, wherein said wearable device (1) comprises: at least one sensor (2) disposed in an auricular and/or temporoparietal region of a head of said user, said at least one sensor (2) being configured to monitor mouth movements of said user, so as to obtain signal data; a processing unit, configured to analyze said signal data and to extract at least one parameter representative of said mouth movements
The invention concerns an optical electrochromic device comprising: - an electrochromic cell (1), - a frame (2) with a groove (21), said device being characterized in that it further comprises: - at least one elastic sealing part (3) arranged in said groove (21), and said electrochromic cell (1) is arranged in said frame (2) and is compressed by said at least one elastic sealing part (3).
An ink composition for stamp-marking on an ophthalmic lens, said composition comprising at least: - a compound of formula (I), (I) wherein n is 1 or 2, - a drying aid, and - at least one pigment.
C07D 403/12 - Composés hétérocycliques contenant plusieurs hétérocycles, comportant des atomes d'azote comme uniques hétéro-atomes du cycle, non prévus par le groupe contenant deux hétérocycles liés par une chaîne contenant des hétéro-atomes comme chaînons
C07C 211/00 - Composés contenant des groupes amino liés à un squelette carboné
C07D 403/14 - Composés hétérocycliques contenant plusieurs hétérocycles, comportant des atomes d'azote comme uniques hétéro-atomes du cycle, non prévus par le groupe contenant au moins trois hétérocycles
47.
MANUFACTURING OF AN OPHTHALMIC OR SEMI-FINISHED LENS USING INJECTION-MOLDING WITH IN-MOLD COINING
A process for manufacturing an ophthalmic or semi-finished lens (20) using injection-molding comprises implementing a receiver (2A) that is provided with a bevel sized for avoiding that the lens sticks to said receiver when removing said lens from a cavity assembly (10). An invention improvement further proposes modifying a location in the cavity assembly of a temperature sensor which is used for controlling a temperature time-profile implemented in the injection-molding process. The invention process provides increased production yield, including for lenses which integrate functionalizing wafers or lids (21), such as polarizing lenses or spectrally filtering lenses.
B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
B29C 33/04 - Moules ou noyauxLeurs détails ou accessoires comportant des moyens incorporés de chauffage ou de refroidissement utilisant des liquides, des gaz ou de la vapeur d'eau
B29C 45/73 - Chauffage ou refroidissement du moule
B29C 45/78 - Mesure, commande ou régulation de la température
B29C 45/56 - Moyens pour plastifier ou homogénéiser la matière à mouler ou pour la forcer dans le moule utilisant des éléments de moules mobiles pendant ou après l'injection, p. ex. pour le moulage par injection-pressage
B29C 43/36 - Moules pour la fabrication d'objets de longueur définie, c.-à-d. d'objets séparés
Device, head-mountable device and eyewear intended to be worn by a user. The device is configured for determining if the user is wearing the device. The device is configured to obtain a signal representing vibrations produced by the user, to determine, in a predetermined frequency range, a power spectrum of the signal, to determine, based on the power spectrum, if the user is wearing the device. The predetermined frequency range is from 8 Hz to 12 Hz.
G06F 1/3231 - Surveillance de la présence, de l’absence ou du mouvement des utilisateurs
G06F 1/3287 - Économie d’énergie caractérisée par l'action entreprise par la mise hors tension d’une unité fonctionnelle individuelle dans un ordinateur
49.
ADDITIVE MANUFACTURING SYSTEM AND METHOD FOR ADDITIVELY MANUFACTURING AN OBJECT
An additive manufacturing system (100) and a method for additively manufacturing an object. The additive manufacturing system comprises a build platform (101). A surface (101-a) of the build platform is configured to support an object being manufactured. The additive manufacturing system also comprises a manufacturing module (102) configured to create layers of the object. The surface of the build platform is impermeable, and the additive manufacturing system is configured to move a point of a surface of the build platform independently of other points of the surface during the manufacturing of the object.
The invention relates to a plastic waste collection apparatus (15) configured to cooperate with a lens manufacturing station (1), the lens manufacturing station (1) being configured to shape a lens (3) by mechanical material removal like machining, grinding and/or trimming, and comprises an interface (9) to receive data information relative to a lens manufacturing job related to lenses to be shaped by the lens (3) manufacturing station (1), said data information comprising for each lens (3) manufacturing job at least a material type parameter of a lens to be shaped, the plastic waste collection apparatus (15) comprising - at least a first collection area (17A) for collecting plastic waste according to a first material type parameter, - at least a second collection area (17B) for collecting plastic waste according to a second material type parameter, - a dispatching unit (31) configured to receive said material type parameter for each lens manufacturing job and to dispatch the waste generated towards the first or the second collection area (17A, 17B) depending on the received material type parameter.
B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
B24B 13/00 - Machines ou dispositifs conçus pour meuler ou polir les surfaces optiques des lentilles ou les surfaces de forme similaire d'autres piècesAccessoires à cet effet
B24B 55/12 - Dispositifs d'évacuation du nuage d'huile ou de l'agent de refroidissementDispositifs pour collecter ou récupérer des matériaux issus du meulage ou du polissage, p. ex. métaux précieux, pierres précieuses, diamants ou similaires
B29B 17/00 - Récupération de matières plastiques ou d'autres constituants des déchets contenant des matières plastiques
B29B 17/02 - Séparation de matières plastiques des autres matières
B29L 11/00 - Éléments optiques, p. ex. lentilles, prismes
51.
ANTICIPATION OF THE CHANGE IN LENS PHYSICAL DIMENSIONS AND FUNCTIONALITY DURING ITS MANUFACTURING PROCESS
A method for providing a lens element having a targeted optical design and comprising a plurality of optical microstructures encapsulated within at least two sub-lens elements, the method comprising: obtaining lens element data comprising at least one theorical parameter related to the optical design of the lens element to be provided, obtaining manufacturing process data relating at least to a step of a process for manufacturing the lens element having a target optical design, obtaining transfer law data comprising at least data relating to a modification of the theorical parameter associated with the process for manufacturing the lens element and compensations to apply to an optical design to compensate said parameter modification, based on the manufacturing process data, optimizing the lens element data by modifying a parameter defining the optical design of the lens element to be provided, based on the transfer law data, manufacturing the lens element based on the optimized lens element data
Method for characterizing at least part of a lens element, for example a myopia control lens element, adapted for a wearer, said lens element providing a first optical function having a refractive power based on the prescription of the wearer, and comprising a plurality of optical elements, each optical element of the plurality of optical elements providing one or more optical functions, at least one of which is different from the first optical function; wherein the method comprises: - obtaining a two-dimensional representation of the local optical power of at least part of the lens element using a deflectometry method or fringe projection profilometry, - determining the optical power distribution over at least part of the two-dimensional representation of the lens element in the form of a representation of the data as a histogram or a stem-and-leaf plot; and - characterizing at least the part of the lens element within said at least part of the two-dimensional representation of the lens element by analyzing the representation of the data, for example characterizing the histogram or stem-and-leaf plot.
G01B 11/25 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour mesurer des contours ou des courbes en projetant un motif, p. ex. des franges de moiré, sur l'objet
The disclosure provides a method for manufacturing by machining an ophthalmic device, comprising: providing (101) data representative of at least one desired surface to be machined on the ophthalmic device, at least as a function of an optical power; providing (102) at least one parameter representative of a wear state of at least one location of an edge of a cutting tool configured to machine the at least one desired surface of the ophthalmic device; determining (103)a machining strategy as a function of both the at least one desired surface and the at least one parameter representative of the wear state; the machining strategy being selected between at least one of a first order (103a) to machine the desired surface with the cutting tool and a second order (103b) not to machine the desired surface with the cutting tool.
G05B 19/404 - Commande numérique [CN], c.-à-d. machines fonctionnant automatiquement, en particulier machines-outils, p. ex. dans un milieu de fabrication industriel, afin d'effectuer un positionnement, un mouvement ou des actions coordonnées au moyen de données d'un programme sous forme numérique caractérisée par des dispositions de commande pour la compensation, p. ex. pour le jeu, le dépassement, le décalage d'outil, l'usure d'outil, la température, les erreurs de construction de la machine, la charge, l'inertie
B24B 9/14 - Machines ou dispositifs pour meuler les bords ou les biseaux des pièces ou pour enlever des bavuresAccessoires à cet effet caractérisés par le fait qu'ils sont spécialement étudiés en fonction des propriétés de la matière propre aux objets à meuler de matière inorganique non métallique, p. ex. de la pierre, des céramiques, de la porcelaine du verre de pièces optiques, p. ex. de lentilles, de prismes
54.
DEVICES AND METHOD FOR FAVOURING A VISUAL SYSTEM CAPACITY IN FUNCTION OF EXTERNAL CONDITIONS
A visual system capacity of a wearer of an smart eyewear including at least one functionality is favoured, by receiving distance data (30) on one or more distances between a part of the smart eyewear and one or more material surfaces located in one or more directions from the wearer, determining from the distance data, actuation data (50) adapted to set one or more parameters of the functionalities so as to favour the visual system capacity of the wearer, and 0 providing the actuation data for those parameters to be set A type (33) of a current environment of the wearer is derived from the distance data and the actuation data are determined from that environment type. Applications to automatic setting of smart smart eyewear functions, notably to echromic smart eyewear.
The invention relates to a method for manufacturing an optical article (30), comprising steps: S1) of providing at least two distinct parts (10), each one having two end faces (11, 12), S2) of assembling said at least two parts so that their end faces (11, 12) form main faces (21, 22) for the assembling (20) of parts, and S3) of machining at least one of said main faces to generate at least one optical face for the optical article.
B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
56.
METHOD FOR MANUFACTURING AN OPHTHALMIC DEVICE HAVING AN OPTICAL FUNCTION INCLUDING AN ADDITION VALUE, AND SET OF OPHTHALMIC DEVICES HAVING DIFFERENT OPTICAL FUNCTIONS
The disclosure relates to a method for manufacturing an ophthalmic device having an optical function including at least an addition value, comprising: providing (101) a substrate having a first predetermined addition value on a first face, and determining (102) locations of positioning markings amongst the first face and a second face opposite to the first face, depending at least on the first predetermined addition value on the first face of the provided substrate and the addition value to bring to the ophthalmic device.
The invention relates to ophthalmic set for myopia progression control of a user, which comprises: - spectral filtering means being configured to selectively emit light in at least one selected range of wavelengths within the visible spectrum of 600 nm to 750 nm when excited by ambient light, allowing retinal exposure of the user myopic eye to said at least one selected range of wavelengths of light, whereby the spectral filtering means are efficient for slowing-down a myopia progression of the user; - wavefront modifying means adapted to modify wavefronts of the light that enters the user eye for slowing down the myopia progression of the user eye.
A method manufacturing an optical article, the method comprising: - providing a base substrate (10) comprising at least one optical surface (12a) and placing the base substrate (10) in a printing assembly (20), - providing a pattern (24, 26) to be printed on the base substrate (10) and determining a printing dot diameter for printing the pattern, - determining (200) a desired surface amount of primer to be deposited, based on the determined printing dot diameter, - depositing (300) a primer layer (30) by depositing a primer with the determined desired surface amount on at least part of the at least one optical surface (12a), - printing the pattern (24, 26) over the primer layer (30) with at least one inkjet printing head (22) depositing at least one dye (34), - placing the base substrate (10) in a heating assembly (40) for a predetermined migration duration, and - removing the primer layer (30).
A method for manufacturing an optical article, the method comprising: - providing (100) two base substrates (10), each base substrate (10) comprising two opposite optical surfaces (12a, 12b) and placing the base substrates (10) in a printing assembly (20), - providing a pattern to be printed on each base substrate (10) through inkjet printing, - determining (200) a preferred path for a printing head (22) to print the pattern on each base substrate (10), taking into account each optical surface (12a, 12b) of each base substrate (10), the preferred path minimizing a parameter representative of a distance measured from the printing head (22) to the optical surface (12a, 12b) being imprinted, - printing (600) the pattern with at least one inkjet printing head (22) depositing at least one dye, the printing head (22) following the preferred path, and - placing (800) each base substrate (10) in a heating assembly (40) for a predetermined duration.
A method for manufacturing an optical article (50a, 50b, 50c) comprising: - incorporating (102) optically functional nanoparticles (16; 20) into a substrate (22), thus obtaining an optical coating (24); - applying (106, 108, 110) said optical coating (24) on a surface of an optical support element (26', 26'', 26''') or incorporating said optical coating (24) as a layer within said optical support element (26', 26'', 26'''), thus obtaining said optical article (50a, 50b, 50c).
1. A method for manufacturing an optical article (62) comprising: - providing a substrate (52) of a predetermined first material and having a concave surface (50); - patterning (100) said concave surface (50) so as to obtain pores (56) having a diameter lower than 200µm and a depth within the range 10µm - 1000µm; - overmolding (102) on the concave surface (50) by applying onto said concave surface (50) a second material, thus obtaining a cover layer (58) which partially fills the pores (56) while entrapping some gas (60) in between.
The present invention relates to a process of preparation of an optical element comprising a microcellular foam film, said optical element and its use for preparing an optical lens which can be used for controlling myopia progression.
The invention relates to an optical article having a substrate made of an optical material comprising a polymer matrix, the substrate comprising a bulk part, and an external part, and said external part of the substrate is made of said optical material comprising said polymer matrix, and particles functionalized with a coupling agent embedded into said polymer matrix of the external part of the substrate, said bulk part of the substrate is made of said optical material comprising said polymer matrix, and said particles are not embedded into the bulk part of the substrate, and the haze value of a 2 mm-thick substrate as determined according to the standard ASTM D1003-00 is higher than or equal to 4 %.
(IC2)(IC2) in the UV region ranges from 280 to 380 nm that is lower than 5% for an angle of incidence of 35°, characterized in that - IC1 comprises a front main face having a mean reflection factor Ruv350-380(IC1)(IC1) in the UV region ranges from 350 to 380 nm for an angle of incidence within the range of from 0° to 15°, and preferably of 0°, is higher than or equal to 75% and the optical article has: - a mean transmission factor in the region ranging from 350 to 380 nm, defined as Tuv350-380(OA)(OA) at an angle of incidence of 0° that is lower than or equal to 2%, - a transmission factor at 380 nm, defined as T380(OA)(OA), at an angle of incidence of 0° that is lower than or equal to 8%.
A method for providing a lens element comprising a plurality of encapsulated diffractive microstructures, the method comprising: (S2) obtaining first lens member data relating to a shape and refractive index of a first lens member comprising a plurality of diffractive microstructures; (S4) obtaining second lens member data relating to a shape and refractive index of a second lens member having a surface complementary to the surface of the first lens member comprising the plurality of diffractive microstructures; (S6) generating a lens element model based on the first and second lens member data; (S3) obtaining energy balance data relating to at least two maximum levels of MTF in at least two distinct planes (z1, Z2); (S10) optimizing the lens element model based on the energy balance data; and (S 12) providing the lens element by assembling at least the first and second lens members based on the optimized lens element model.
Method, for example implemented by computer means, for determining a local spatial contrast obtained with an optical lens to be placed in front of at least a portion of an eye, wherein the method comprises: - obtaining an eye model representative of the eye, - obtaining an optical lens model representative of the optical lens to be placed in front of at least a portion of the eye, - determining a point spread function based on the system of the eye model associated with the optical lens model, - convolving a plurality of images with the determined point spread functions so as to obtain a blurred version of the image, - determining the local spatial contrast in the blurred version of the image.
The present disclosure relates to a method for the enzymatic degradation of poly(allyl diglycol carbonate) such as CR-39® polymer, consisting in contacting at least one enzyme of the invention with poly(allyl diglycol carbonate) such as CR-39® polymer in a suitable form, for a sufficient time and in non-toxic and environmentally friendly reaction conditions. The method can also be used to recover the basic monomer and/or other compounds derived from the enzymatic degradation process, which can be further used to re-obtain the polymer or as intermediates in the synthesis of other chemicals. The present disclosure also concerns the use of a kit for the enzymatic degradation of poly(allyl diglycol carbonate) such as CR-39® polymer.
The present disclosure relates to a method for the enzymatic degradation of polythiourethanes containing the thiourethane bond of formula –S-C(=O)-N(H)- in every repeating unit of the polymeric chain, consisting in contacting at least one enzyme of the invention with a polythiourethane in a suitable form, for a sufficient time and in non-toxic and environmentally friendly reaction conditions. The method can also be used to recover the basic monomer and/or other compounds derived from the enzymatic degradation process, which can be further used to re-obtain the polymer or as intermediates in the synthesis of other chemicals. The present disclosure also covers a kit for the enzymatic degradation of polythiourethanes.
Lens element, for example a myopia control lens element, adapted for a wearer, said lens element providing a first optical function having a power based on the prescription of the wearer, and comprising a plurality of optical elements, for example at least twenty optical elements, each optical element of the plurality of optical elements providing one or more optical functions, at least one of which is different from the first optical function; wherein over at least a 4 mm diameter pupil whose center is at 10 mm from a reference point, for example the optical center, of the lens element the normalized integral of the modulation transfer function over the range of spatial frequencies comprised from 0 to 5 cycles per degree and over said pupil is smaller than or equal to 0.66, for example smaller than or equal to 0.60.
Myopia control lens element Lens element, for example a myopia control lens element, adapted for a wearer, said lens element providing a first optical function having a power based on the prescription of the wearer, and comprising a plurality of optical elements, for example at least twenty optical elements, each optical element of the plurality of optical elements providing one or more optical functions, at least one of which is different from the first optical function; wherein over at least a 6 mm diameter pupil whose center is at 7.5 mm from a reference point, for example the optical center, of the lens element the standard deviation of the optical power distribution over said pupil is greater than or equal to 4 diopters, for example greater than or equal to 4.5 diopters, for example greater than or equal to 7 diopters.
A lens element intended to be worn in front of an eye of a person comprising: - a refraction area having a refractive power based on a prescription for said eye of the person; and - a plurality of refractive optical elements having an optical function different from the optical function of the refraction area, wherein over an annular zone centered on a reference point, for example the optical center, of the lens element and having an inner diameter of 8 mm and an outer diameter of 17 mm, the ratio of the surface of the annular zone having an additional optical power greater than or equal to 7.5 diopters in absolute value and relative to the power at the reference point, for example optical center, of the lens element over the total surface of the annular zone is greater than or equal to 0.02, for example greater than or equal to 0.05, for example greater than or equal to 0.09 and smaller than or equal to 0.5, for example smaller than or equal to 0.3.
The disclosure relates to a method for engraving an ophthalmic device, comprising: providing a photo-ablation device configured to engrave at least one face of the ophthalmic device; providing a marking pattern to be engraved on the at least one face of the ophthalmic device thanks to the photo-ablation device; and determining a kinematics to engrave the marking pattern on the at least one face of the ophthalmic device, wherein the kinematics includes a marking pattern kinematics and an engraving kinematics, both being defined as a function of at least one parameter amongst geometrical characteristics of the at least one face of the ophthalmic device to be engraved, operational parameters of the photo-ablation device, and geometrical characteristics of the marking pattern.
A system (3) for evaluating a light-induced discomfort of a user, the system (3) comprising a sensor (9) for measuring an electrical conductance of a skin surface of the user, the system (3) being configured for: - obtaining through the sensor (9) at least one measurement of the electrical conductance of the skin surface of the user, - obtaining at least one value of at least one parameter representative of the at least one measurement of the electrical conductance, and - comparing the at least one value of the at least one parameter to at least one reference value and detecting a light-induced discomfort of the user based on the comparison.
The invention relates to an optical material having a refractive index higher than or equal to 1.50 obtained by polymerization of a polymerizable composition comprising at least one polythiol and at least one polymerizable compound of formula (I) in which R1and R2represent independently a hydrogen atom, a substituted or unsubstituted alkyl group, an aryl group, or R1and R2, taken together, form a divalent group of formula -R1-R2-, in which -R1-R2- represents a substituted or unsubstituted alkylene group, Z represents a divalent group connected to the adjacent mercapto -SH group through a carbon atom, and n = 0 or 1.
G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
C07C 321/14 - Sulfures, hydropolysulfures ou polysulfures ayant des groupes thio liés à des atomes de carbone acycliques d'un squelette carboné acyclique saturé
C07C 321/00 - Thiols, sulfures, hydropolysulfures ou polysulfures
C07C 321/18 - Sulfures, hydropolysulfures ou polysulfures ayant des groupes thio liés à des atomes de carbone acycliques d'un squelette carboné acyclique non saturé
76.
OPTICAL MATERIAL DERIVED FROM A POLYMERIZABLE COMPOUND CONTAINING ALKYNYLENE AND THIOL FUNCTIONS
The invention relates to an optical material having a refractive index higher than or equal to 1.50 obtained by polymerization of a polymerizable composition comprising at least one polymerizable compound having at least two mercapto -SH groups, and at least one alkynylene -C≡C- group connected on each side to a carbon atom.
G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
C07C 321/00 - Thiols, sulfures, hydropolysulfures ou polysulfures
C07C 321/08 - Thiols ayant des groupes mercapto liés à des atomes de carbone acycliques d'un squelette carboné acyclique non saturé
C07C 321/18 - Sulfures, hydropolysulfures ou polysulfures ayant des groupes thio liés à des atomes de carbone acycliques d'un squelette carboné acyclique non saturé
C07C 321/28 - Sulfures, hydropolysulfures ou polysulfures ayant des groupes thio liés à des atomes de carbone de cycles aromatiques à six chaînons
C07C 323/52 - Thiols, sulfures, hydropolysulfures ou polysulfures substitués par des halogènes, des atomes d'oxygène ou d'azote ou par des atomes de soufre ne faisant pas partie de groupes thio contenant des groupes thio et des groupes carboxyle liés au même squelette carboné ayant les atomes de soufre des groupes thio liés à des atomes de carbone acycliques du squelette carboné le squelette carboné étant acyclique et saturé
77.
OPTICAL MATERIAL DERIVED FROM A POLYMERIZABLE COMPOSITION CONTAINING A HETERODIFUNCTIONAL ALKYNE COMPOUND
The invention relates to polymerizable composition comprising at least one polythiol, at least one polyisocyanate or polyisothiocyanate, and at least one polymerizable compound of formula (I), in which R1and R2represent a hydrogen atom, a substituted or unsubstituted alkyl group, an (hetero)aryl group, or R1and R2, taken together, form a divalent group of formula -R1- R2-, in which -R1-R222 or NHR4in which R4represents a substituted or unsubstituted alkyl group or (hetero)aryl group, and R3 represents a hydrogen atom, a substituted or unsubstituted alkyl group, an (hetero)aryl group, or a CR'1R'2Z' group in which R'1, R'2and Z' are defined as R1, R2 and Z.
The invention relates to a polymerizable composition comprising a) at least one polyiso(thio)cyanate and at least one prepolymer having thiol end groups obtained from the reaction of a mixture of at least one polythiol and at least one polymerizable compound of formula (I), or b) at least one polythiol and at least one prepolymer having isocyanate or isothiocyanate end groups of formula -NCX where X is O or S, obtained from the reaction of a mixture of at least one polyiso(thio)cyanate and at least one polymerizable compound of formula (I), in which R1and R2represent a hydrogen atom, a substituted or unsubstituted alkyl group, an (hetero)aryl group, or R1and R2, taken together, form a divalent group of formula -R1-R2-, in which -R1-R222 or NHR4in which R4represents a substituted or unsubstituted alkyl group or (hetero)aryl group, and R3represents a hydrogen atom, a substituted or unsubstituted alkyl group, an (hetero)aryl group, or a CR'1R'2Z' group in which R'1, R'2and Z' are defined as R1, R2 and Z. (Formula (I))
C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène
C08G 18/75 - Polyisocyanates ou polyisothiocyanates cycliques cycloaliphatiques
C08G 18/10 - Procédés mettant en œuvre un prépolymère impliquant la réaction d'isocyanates ou d'isothiocyanates avec des composés contenant des hydrogènes actifs, dans une première étape réactionnelle
C08G 18/67 - Composés non saturés contenant un hydrogène actif
79.
OPTICAL MATERIAL DERIVED FROM A POLYMERIZABLE COMPOSITION CONTAINING A TERMINAL DIALKYNE COMPOUND
The invention relates to a polymerizable composition for an optical material comprising at least one polythiol, at least one polyisocyanate or polyisothiocyanate, and at least one polymerizable compound of formula (I), in which R1, R2, R'1and R'2represent a hydrogen atom, a substituted or unsubstituted alkyl group, an (hetero)aryl group, or R1and R2, taken together, form a divalent group of formula -R1-R2-, in which -R1-R2- represents a substituted or unsubstituted alkylene group, or R'1and R'2, taken together, form a divalent group of formula -R'1-R'2-, in which -R'1-R'2- represents a substituted or unsubstituted alkylene group, Z represents a divalent group and n = 0 or 1.
The invention provides a method implemented by computer means for adjusting color of at least one active lens of a smart spectacle (1) when used by a wearer, said method comprising: acquiring (100) at least one image representing said wearer and its current environment; determining (110) a first set of N colors, N being an integer greater or equal to 1, said first set of N colors comprising dominant colors in said at least one acquired image; determining (120) a second set of M harmonized colors, M being an integer greater or equal to 1, based on said first set of N colors; selecting (130) at least one harmonized color within said second set of M harmonized color; and controlling (140) said at least one active lens so that an external color of said at least active lens corresponds to the selected at least one harmonized color.
Device for determining values of parameters representing the visual behaviour of a person, handheld digital device and computer-implemented method. The device is configured for determining a first visual acuity of the person by displaying at least one first optotype, a size of the at least one first optotype varying during the display according to a distance between the device and the person so that an angular size of the at least one first optotype, from a point of view of the person, is fixed. The device is also configured for determining a first relative motion, the first relative motion being a relative motion of the person with respect to the device during the determination of the first visual acuity.
A61B 3/032 - Dispositifs pour présenter des symboles ou des caractères d'épreuve, p. ex. projecteurs de mires
A61B 3/028 - Appareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux du type à mesure subjective, c.-à-d. appareils de d’examen nécessitant la participation active du patient pour examen d'acuité visuelleAppareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux du type à mesure subjective, c.-à-d. appareils de d’examen nécessitant la participation active du patient pour la détermination de la réfraction, p. ex. phoromètres
82.
METHOD AND SYSTEM FOR DETERMINING FITTING PARAMETERS FOR FITTING AN OPHTHALMIC LENS IN A RIM OF A SPECTACLE FRAME FOR AN INDIVIDUAL
The invention relates to a method (100) and system for determining fitting parameters for fitting an ophthalmic lens in a rim of a spectacle frame for an individual. Frame 3D data including points representative of said rim are first determined (110) in a predetermined 3D reference system attached to the head of said individual. The individual is then asked (120) to wear a head-mounted display device configured to display virtual images towards its eyes. Virtual images representatives of at least one simulated real-life environment are displayed (130) by said head-mounted device, and the individual is asked to adapt his posture to said at least one simulated real-life environment. While said individual adapts his posture, an eye tracker device embedded in said head-mounted display device tracks (140) eye motions, and a main gaze direction is determined (150) in said predetermined 3D reference system based on the tracked eye motions. Fitting parameters can then be determined (160) by calculating a position of a fitting point of an ophthalmic lens relative to said spectacle frame, said fitting point corresponding to an intersection of said main gaze direction going through at least an eye rotation center of said individual and said frame 3D data.
A61B 3/113 - Appareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux du type à mesure objective, c.-à-d. instruments pour l'examen des yeux indépendamment des perceptions ou des réactions du patient pour déterminer ou enregistrer le mouvement de l'œil
A61B 5/11 - Mesure du mouvement du corps entier ou de parties de celui-ci, p. ex. tremblement de la tête ou des mains ou mobilité d'un membre
A61B 5/107 - Mesure de dimensions corporelles, p. ex. la taille du corps entier ou de parties de celui-ci
A61B 5/00 - Mesure servant à établir un diagnostic Identification des individus
83.
METHOD FOR MANUFACTURING AN OPTICAL DEVICE, MANUFACTURING DEVICE FOR MANUFACTURING THE OPTICAL DEVICE, THE OPTICAL DEVICE AND EYEWEAR
Method for manufacturing an optical device, manufacturing device for manufacturing the optical device, the optical device and eyewear Method for manufacturing an optical device, manufacturing device for manufacturing the optical device, the optical device and eyewear. The optical device comprises a first optical element and a second optical element. The method comprises a step of placing on a support a plurality of layers comprising successively the first optical element, a layer of a compression-activated glue, the second optical element. The layer of the compression- activated glue is between the first optical element and the second optical element. The support comprises spacers placed around the plurality of layers. The spacers have a height superior to a height of the plurality of the layers. The method also comprises a step of placing a layer of an elastic material covering the plurality of the layers and the spacers and a step of compressing the plurality of the layers to achieve a compression of the compression-activated glue above a predetermined compression level.
The invention relates to [an ophthalmic article (1) in particular for gamer eyewear, comprising at least a first and a second electrochromic compound (7A, 7B), where the first electrochromic compound (7A) acts as a filter having a transmission rate of less than 20%, preferentially less than 10% in a range between 400nm and 500nm, preferentially 440-500nm and a transmission rate higher than 50%, preferentially higher than 60%, in a range between 580-620nm, preferentially between 580-610nm in one activated state and the second electrochromic compound (7B) acts as a filter having a transmission rate of higher than 20%, preferentially higher than 30%, in a range between 400nm and 500nm, preferentially 440- 500nm and a transmission rate less than 20% preferentially less than 10% in a range between 580-620nm, preferentially between 580-610nm in one activated state.
Spectacle lens comprising at least: - a first zone comprising a plurality of micro-optical elements, and - a second zone comprising a plurality of micro-optical elements, wherein the first zone comprising at least one first annular part defined by points of the first zone that are at a first angular distance from the first center of the first zone and the second zone comprising at least one second annular part defined by points of the second zone that are at a second angular distance from the second center of the second zone, a logarithm of an integration of values of the point spread function along the first annular part of the first zone differs by less than 15% from a logarithm of an integration of values of the point spread function along the second annular part of the second zone, the first and second angular distances being equal.
A family of electrochromic compounds of formula (I) comprising a thiophene, selenophene or furan ring is herein disclosed, as well as electrochromic compositions and devices comprising at least one of said electrochromic compounds of formula (I).
C07D 407/14 - Composés hétérocycliques contenant plusieurs hétérocycles, au moins un cycle comportant des atomes d'oxygène comme uniques hétéro-atomes du cycle, non prévus par le groupe contenant au moins trois hétérocycles
C07D 409/04 - Composés hétérocycliques contenant plusieurs hétérocycles, au moins un cycle comportant des atomes de soufre comme uniques hétéro-atomes du cycle contenant deux hétérocycles liés par une liaison directe de chaînon cyclique à chaînon cyclique
C07D 409/14 - Composés hétérocycliques contenant plusieurs hétérocycles, au moins un cycle comportant des atomes de soufre comme uniques hétéro-atomes du cycle contenant au moins trois hétérocycles
C07D 519/00 - Composés hétérocycliques contenant plusieurs systèmes de plusieurs hétérocycles déterminants condensés entre eux ou condensés avec un système carbocyclique commun non prévus dans les groupes ou
87.
METHOD FOR CHECKING A MACHINED OPHTHALMIC DEVICE AND/OR A MACHINED MOLD FOR MAKING AN OPHTHALMIC DEVICE
The disclosure relates to a method for checking (100) a machined ophthalmic device and/or a machined mold for making an ophthalmic device obtained thanks to a machining system, comprising: - obtaining (101) initial data from the machined ophthalmic device and/or the machined mold, measured in a first predetermined referential, the data obtained being representative of a determined reproductible defect generated on the machined ophthalmic device and/or on the machined mold; - determining (102) a second referential depending on the determined reproductible defect; - manipulating (103) the initial data from the first predetermined referential to the determined second referential in order to obtain transformed data; - deducing (104) from the transformed data a defect value representative of the determined reproductible defect and generated on the machined ophthalmic device and/or on the machined mold.
G05B 19/406 - Commande numérique [CN], c.-à-d. machines fonctionnant automatiquement, en particulier machines-outils, p. ex. dans un milieu de fabrication industriel, afin d'effectuer un positionnement, un mouvement ou des actions coordonnées au moyen de données d'un programme sous forme numérique caractérisée par le contrôle ou la sécurité
B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
B24B 13/02 - Machines ou dispositifs conçus pour meuler ou polir les surfaces optiques des lentilles ou les surfaces de forme similaire d'autres piècesAccessoires à cet effet au moyen d'outils possédant des surfaces abrasives dont la forme correspond à la forme de la lentille à travailler
B24B 13/06 - Meulage de lentilles, l'outil ou la pièce étant commandé par des supports d'informations, p. ex. des gabarits, des bandes perforées ou magnétiques
B24B 49/03 - Appareillage de mesure ou de calibrage pour la commande du mouvement d'avance de l'outil de meulage ou de la pièce à meulerAgencements de l'appareillage d'indication ou de mesure, p. ex. pour indiquer le début de l'opération de meulage comparant la cote instantanée de la pièce travaillée à la cote cherchée, la mesure ou le calibrage étant continus ou intermittents fonctionnant selon la cote finale de la pièce précédemment rectifiée
B24B 49/12 - Appareillage de mesure ou de calibrage pour la commande du mouvement d'avance de l'outil de meulage ou de la pièce à meulerAgencements de l'appareillage d'indication ou de mesure, p. ex. pour indiquer le début de l'opération de meulage impliquant des dispositifs optiques
B24B 51/00 - Systèmes pour la commande automatique d'une série d'opérations successives du meulage d'une pièce
The invention relates to a computer implemented method for predicting a level of quality of a vacuum into a vacuum chamber (2) of a coating machine (1) suitable for coating optic elements (8). According to the invention, this method comprises steps of: - acquiring at least one technical feature of the coating machine during coating processes of optic elements, and - predicting said level of quality from the at least one measured technical feature by means of a processing unit that registers a machine learning model, said at least one technical feature being an input of said machine learning model and said level of quality being an output of said machine learning model.
The invention concerns a lens element (11) intended to be worn in front of an eye of a wearer under wearing conditions comprising a substrate (12) with a front face (12F) and a rear face (12R), wherein the substrate (12) comprises a set of furtive diffusive zones (14) having a light diffusion pattern presenting a lateral diffusion pattern and minimized diffusion in a forward main direction with regard to the lateral diffusion pattern, said furtive diffusive zones (14) are arranged in order that the forward main direction passes through the center of rotation (ERC) of an eye model under wearing conditions.
The invention relates to a device for determining a final value of a vision correction power of a final corrective lens to be placed in front of an eye of an individual, said device comprising a computer with one or more memories and one or more processors, wherein : - said one or more memories have in memory: - an initial measured value of a magnitude representative of a refractive feature of the eye of the individual, measured using a first optometry instrument, - an estimated value of said magnitude, calculated using a predetermined model of a second optometry instrument, - a current value of said magnitude determined based on a current corrective lens previously worn by the individual, - said one or more processors are programmed to achieve the following steps: a) comparing a difference between the measured value and the current value of said magnitude to a first threshold value, and b) when the difference between the measured value and the current value of said magnitude is greater than or equal to said first threshold value, comparing the difference between said measured value and said estimated value of said magnitude to a second threshold value, c) determining said final value of the vision correction power based on said comparisons.
A61B 3/028 - Appareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux du type à mesure subjective, c.-à-d. appareils de d’examen nécessitant la participation active du patient pour examen d'acuité visuelleAppareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux du type à mesure subjective, c.-à-d. appareils de d’examen nécessitant la participation active du patient pour la détermination de la réfraction, p. ex. phoromètres
A machine for filling of a lens mold assembly, the machine including a filling workstation and a pre-filling workstation for preparing the lens mold assembly prior to transferring to the filling workstation The pre-filling workstation includes a lens-mold- assembly-rotation unit operable to hold and rotate the lens mold assembly; a tape-tail- lifting unit having a force applicator operable to apply a force to graze a circumferential surface of a tape around the lens mold assembly to lift open a first tail-end portion of the tape, and a tape-tail-finding unit to intercept the lifted first tail end portion of the tape as the lens mold assembly is being rotated by the lens-mold-assembly-rotation unit and to detect whether the first tail end portion of the tape is intercepted, wherein the lens-mold-assembly rotation unit is configured to stop rotating based a detection that the first tail end portion of the tape is intercepted.
The invention relates to a group of novel electrochromic compounds. More specifically, it relates to electrochromic polycyclic compounds comprising a five, six or seven-membered ring, wherein said polycyclic compounds contain at least two nitrogen atoms in their cyclic central core. It also relates to the use of these compounds as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens.
C07D 215/00 - Composés hétérocycliques contenant les systèmes cycliques de la quinoléine ou de la quinoléine hydrogénée
C07D 241/00 - Composés hétérocycliques contenant des cycles diazine-1,4 ou diazine-1,4 hydrogéné
C07D 243/00 - Composés hétérocycliques contenant des cycles à sept chaînons comportant deux atomes d'azote comme uniques hétéro-atomes du cycle
C07D 253/00 - Composés hétérocycliques contenant des cycles à six chaînons comportant trois atomes d'azote comme uniques hétéro-atomes du cycle, non prévus par le groupe
G02C 7/10 - Filtres, p. ex. pour faciliter l'adaptation des yeux à l'obscuritéLunettes de soleil
94.
METHOD FOR OBTAINING AN OPTICAL LENS WITH A TARGET TINT
The invention relates to a method for obtaining an optical lens with a target tint comprising steps of: - providing a process for tinting the optical lens to the target tint and a set of process variables suitable to modify the target tint, each process variable being able to take a value, - providing several optical lens samples tinted according to said process for tinting and associated to a set of values for said process variables, - measuring a measured tint of each optical lens sample, - providing models receiving as an input a set of values for the process variables and giving as an output a modelled tint for an optical lens tinted by said process, - fine-tuning said model by minimizing of a first function that depends on a gap between the measured tints and second modelled tints for the optical lens samples, - inverting said model, - performing the process using the set of values to obtain the optical lens having the target tint.
G02C 7/10 - Filtres, p. ex. pour faciliter l'adaptation des yeux à l'obscuritéLunettes de soleil
B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
G01J 3/46 - Mesure de couleurDispositifs de mesure de couleur, p. ex. colorimètres
G05B 17/00 - Systèmes impliquant l'usage de modèles ou de simulateurs desdits systèmes
D06P 1/00 - Procédés généraux de teinture ou d'impression des textiles ou procédés généraux de teinture du cuir, des fourrures ou des substances macromoléculaires solides de toutes formes, classés selon les teintures, les pigments ou les substances auxiliaires utilisés
B01F 101/30 - Mélange de peintures ou d'ingrédients de peinture, p. ex. de pigments, de colorants, de couleurs, de laques ou d’émaux
G02B 27/00 - Systèmes ou appareils optiques non prévus dans aucun des groupes ,
95.
CALCULATION MODULE CONFIGURED TO EVALUATE VISUAL AND POSTURAL ERGONOMICS
A calculation module for evaluating visual and postural ergonomics of a user (11) and issuing recommendations, the calculation module being configured to: - obtain at least one value of at least one optical parameter representative of at least one optical element worn by the user (11), - obtain at least one value of at least one positional parameter representative of a position, a movement or a succession of movements of at least one body-part of the user (11), - select reference values for the at least one positional parameter based on the value of the at least one optical parameter, - compare the values of the at least one positional parameter to the selected reference values to detect an inadequacy, and - issue at least one recommendation to the user (11) in case of a detected inadequacy.
G16H 50/20 - TIC spécialement adaptées au diagnostic médical, à la simulation médicale ou à l’extraction de données médicalesTIC spécialement adaptées à la détection, au suivi ou à la modélisation d’épidémies ou de pandémies pour le diagnostic assisté par ordinateur, p. ex. basé sur des systèmes experts médicaux
A61B 3/04 - Montures d'essaiJeux de lentilles pour emploi dans ces montures
A61B 3/00 - Appareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux
G16H 20/00 - TIC spécialement adaptées aux thérapies ou aux plans d’amélioration de la santé, p. ex. pour manier les prescriptions, orienter la thérapie ou surveiller l’observance par les patients
A61B 3/113 - Appareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux du type à mesure objective, c.-à-d. instruments pour l'examen des yeux indépendamment des perceptions ou des réactions du patient pour déterminer ou enregistrer le mouvement de l'œil
G16H 50/30 - TIC spécialement adaptées au diagnostic médical, à la simulation médicale ou à l’extraction de données médicalesTIC spécialement adaptées à la détection, au suivi ou à la modélisation d’épidémies ou de pandémies pour le calcul des indices de santéTIC spécialement adaptées au diagnostic médical, à la simulation médicale ou à l’extraction de données médicalesTIC spécialement adaptées à la détection, au suivi ou à la modélisation d’épidémies ou de pandémies pour l’évaluation des risques pour la santé d’une personne
G02C 11/00 - Accessoires non optiquesFixation de ceux-ci
The invention relates to a method for centering an ophthalmic lens (10) comprising several distinct patterns (12) located around a pattern free area (13), said method being performed by a processing unit and comprising steps of: - acquiring at least one image of said ophthalmic lens, - processing said image to detect said patterns, - deducing therefrom a position of a centering point (AC). According to the invention, after said step of processing, only a part of said patterns are selected as a function of their positions relative to said pattern free area, and during said step of deducing, the centering point position is deduced from only the selected patterns positions.
B24B 13/005 - Dispositifs de blocage, supports ou similairesDispositifs d'alignement
B24B 9/14 - Machines ou dispositifs pour meuler les bords ou les biseaux des pièces ou pour enlever des bavuresAccessoires à cet effet caractérisés par le fait qu'ils sont spécialement étudiés en fonction des propriétés de la matière propre aux objets à meuler de matière inorganique non métallique, p. ex. de la pierre, des céramiques, de la porcelaine du verre de pièces optiques, p. ex. de lentilles, de prismes
97.
METHOD FOR IMPRINTING OPHTHALMIC LAMINATES AND RESIST COMPOSITION THEREFOR
The present invention relates to a method of manufacturing an ophthalmic laminate (10) having a first support layer (11, 12), a resist layer (13) having micro or nanostructures (14) at a surface opposite the first support layer; the method comprising: forming on the first support layer, a partially cured resist layer (132) with a surface having micro or nanostructures through: depositing a resist composition (4) onto the first support layer to form a resist layer (41); imprinting the micro or nanostructures (131) onto the resist layer by applying onto the resist layer a stamp (5) provided with a negative image (51) of the micro or nanostructures and partially curing the resist layer until it is no longer tacky but acrylate bonds are still present therein; and removing the stamp. It also relates to the ophthalmic laminate and a method of manufacturing an ophthalmic lens using the ophthalmic laminate.
B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
98.
OPHTHALMIC LENS COMPRISING AN ACRYLONITRILE COMPOUND
The present invention relates to ophthalmic lenses comprising a compound of Formula (I), a preparation method thereof and the use of a compound of Formula (I) in an ophthalmic lens to absorb blue light.
G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
99.
METHOD OF CURING A POLYTHIOURETHANE-BASED SUBSTRATE FROM A PRE-POLYMER
The invention relates to a method of curing a polythiourethane-based transparent casted substrate, comprising the steps of providing a first component A comprising a polythiourethane pre-polymer having iso(thio)cyanate end groups, said pre-polymer having been prepared from at least one polythiol monomer and at least one polyiso(thio)cyanate monomer, used in amounts adapted so that the molar ratio R2 of NCX/SH groups ranges from 2 to 35, providing a second component B comprising at least one polythiol monomer, mixing together first and second components A and B and filling a molding cavity with the resulting polymerizable mixture, curing said polymerizable mixture to obtain a polythiourethane-based transparent substrate, wherein said pre-polymer has been prepared by mixing said at least one polyiso(thio)cyanate monomer and said at least one polythiol monomer in initial amounts such that the initial molar ratio R1 of NCX/SH groups for said monomers ranges from 0.3 R2 to 0.95 R2, polymerizing the mixture, and adding to the mixture an additional amount of at least one polyiso(thio)cyanate monomer such that the molar ratio of NCX/SH groups for all the monomers used in the preparation of said pre- polymer is equal to R2, X being O or S.
C08G 18/10 - Procédés mettant en œuvre un prépolymère impliquant la réaction d'isocyanates ou d'isothiocyanates avec des composés contenant des hydrogènes actifs, dans une première étape réactionnelle
C08G 18/22 - Catalyseurs contenant des composés métalliques
C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène
C08G 18/76 - Polyisocyanates ou polyisothiocyanates cycliques aromatiques
A refractive error of an eye of a user is estimated by receiving measurements (21) of the visual acuity, VA, of the user's eye, called reference VA measurements, and data (22) related to distinct respectively associated levels of blur, called reference blur data, the reference VA measurements being performed within a reference measurement period by imposing the respective levels of blur on the user's eye. A generic model (23) involving a theoretical VA, theoretical blur data and a theoretical refractive error is particularized into a specific model (24) for the user's eye, from the reference VA measurements and the reference blur data, and information (25) relevant to the refractive error of the user's eye is produced from the specific model and provided. Applications to vision follow-up and to myopia, hyperopia and astigmatism control.
A61B 3/028 - Appareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux du type à mesure subjective, c.-à-d. appareils de d’examen nécessitant la participation active du patient pour examen d'acuité visuelleAppareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux du type à mesure subjective, c.-à-d. appareils de d’examen nécessitant la participation active du patient pour la détermination de la réfraction, p. ex. phoromètres
brevets
