Functionalized optical layered structure, functionalized optical article, eyewear containing the same, and their methods of manufacture A functionalized optical layered structure comprising—a first element representing a first single-layer or multi-layer functional film (15); —at least one second element selected from a protection liner or a base optical element (1) or a second functional film—at least one pressure-sensitive adhesive layer placed in contact with at least one surface of said first element and at least one surface of said second element, wherein the at least one pressure-sensitive adhesive layer (14′) is of optical quality and comprises coloring agents (12).
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.
The invention relates to a transparent optical article comprising a thermoplastic substrate, at least one UV absorber, and at least one fluorescing dye at least partially inhibiting transmission of light having a wavelength ranging from 400 to 500 nm, wherein the spectral transmission curve of said transparent optical article has a light cut-off wavelength higher than or equal to 400 nm and an inflection point at a wavelength ranging from 400 to 450 nm, and the slope at said inflection point is higher than or equal to 6%/nm.
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).
A peelable liner for protecting an optical wafer or a multilayer film from which the optical wafer can be cut, said liner comprising a film A comprising one or more liner layers A each comprising a polymer A independently chosen from polymers having a melting point (Tm) of 100° C. to 135° C., and a film B comprising one or more liner layers B each comprising a polymer B independently chosen from polymers having a melting point of 140° C. to 170° C., said film A comprising a first face configured to be in direct contact with the optical wafer when the liner adheres to the optical wafer and a second face opposite the first face, and said film B being placed on the second face of film A, wherein the total thickness of the one or more liner layers A is of at least 5 μm and the total thickness of the one or more liner layers B is of at least 30 μm.
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
An ophthalmic set for myopia progression control comprises spectral filtering means arranged for being effective on light that enters a user's eye. The spectral filtering means selectively reduce blue-green light intensity, and possibly also amber light intensity. Preferably, said spectral filtering means are combined with wavefront modifying means within the ophthalmic set for increased efficiency in slowing-down myopia progression for the user. In possible embodiments, the spectral filtering means and wavefront modifying means are combined in spectacle lenses (1, 2), and the wavefront modifying means are comprised of microlenses (21) or light-diffusing elements.
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
15.
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 additively manufacturing an ophthalmic lens. The manufacturing method comprises, creating at least one disrupted part, the at least one disrupted part having a disrupted refractive index variation. The at least one disrupted part is smaller than 1 mm3 for example smaller than 1/12 mm3. The at least one disrupted part is located in a depth of the ophthalmic lens or on a surface of the ophthalmic lens.
B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
B29C 64/124 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p. ex. dépôt d’un cordon continu de matériau visqueux utilisant des couches de liquide à solidification sélective
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.
An eyewear is adapted for fitting a user's face and for determining an eye direction of a user's eye. The eyewear is provided with at least three light sensors each configured for outputting a measured light intensity value that corresponds to ambient light originating from surroundings of the user outside the eyewear and reflected or scattered by the user's eye. Processing circuitry of the eyewear determines the eye direction from the measured light intensity values.
G06F 3/01 - Dispositions d'entrée ou dispositions d'entrée et de sortie combinées pour l'interaction entre l'utilisateur et le calculateur
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
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
28.
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
31.
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
The present disclosure includes optical articles comprising a film layer that has first and second film surfaces and is embossed such that the first film surface defines a plurality of concave optical elements and the second film surface defines a plurality of convex optical elements. The present optical articles can include one or more optical layers coupled to the film layer. Each of the optical layer(s) can encapsulate the concave optical elements or the convex optical elements.
(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.
Process for Manufacturing an Optical Article Having Microstructures, Microstructured Optical Article and Their Use for Myopia Control and/or Prevention
The invention relates to a process for manufacturing an optical article comprising at least the following successive steps: (a) producing a first optical functional element A having a first refractive index, named hereafter nA, by injecting in a mold of an injection molding device at least a first material A1, the first optical functional element A having at least a first main face and a second main face, said first main face including a pattern of optical microstructures, (b) coating directly onto said first main face of the first optical functional elementA, a second optical functional element B via a first main face of said second optical functional element, having a second refractive index, named hereafter nB, that is distinct from nA, by injecting into said mold at least a second material B1, characterized in that before performing the step (b), the process further comprises (al) drying the first optical functional element A, said drying step is adapted to or configured to obtain a first optical functional element A having a moisture content lower than or equal to 500 PPM. The invention also relates to an optical article obtained according to the above-mentioned process and its use for myopia control and/or prevention.
The disclosure provides a method for manufacturing an ophthalmic device, comprising machining to provide a predetermined surface on a part and which corresponds to an initial ophthalmic surface, the machining comprising: —selecting (130) a machining tool having a cutting edge; —selecting (140) the initial ophthalmic surface of the ophthalmic device intended to be manufactured; —providing (150) a determined kinematics of the machining tool which is function of the initial ophthalmic surface and of a wear parameter of the cutting edge; —machining (160) the predetermined surface according to the determined kinematics of the machining tool; wherein the wear parameter is function of at least a distance travelled by the cutting edge for machining the predetermined surface and/or a friction time between the cutting edge and the part which is machined.
B23Q 15/28 - Commande automatique ou régulation du mouvement d'avance, de la vitesse de coupe ou de la position tant de l'outil que de la pièce avant ou après l'action de l'outil sur la pièce avec compensation de l'usure de l'outil
B23B 5/36 - Machines ou dispositifs à tourner spécialement conçus pour un travail particulierAccessoires correspondants spécialement conçus à cet effet pour tourner des surfaces de formes spéciales grâce à l'emploi de mécanismes géométriques produisant un mouvement relatif entre l'outil et la pièce, c.-à-d. tours de façonnage
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
B29C 33/38 - Moules ou noyauxLeurs détails ou accessoires caractérisés par la matière ou le procédé de fabrication
37.
METHOD FOR DETERMINING AN OPHTHALMIC LENS ADAPTED FOR CORRECTING AN ABNORMAL REFRACTION OF AN EYE OF A WEARER
A method is provided for determining an ophthalmic lens configured to correct an abnormal refraction of an eye of a wearer and including at least three optical elements disposed on a surface of the ophthalmic lens to suppress or reduce a progression of the abnormal refraction of the eye, the method including obtaining prescription data configured to correct the abnormal refraction, obtaining at least one abnormal refraction parameter relating to the abnormal refraction, obtaining at least one sensitivity parameter representing a variation of sensitivity of the wearer as a function of at least one parameter of the optical elements, determining a value of the at least one parameter of the optical elements configured for the wearer based on the abnormal refraction parameter and the sensitivity parameter; and determining the ophthalmic lens based at least on the obtained prescription data and the value of the parameter of the optical elements.
A method for obtaining an optical prescription. The method includes determining a value of a fatigue parameter for at least two intermediate optical prescriptions among a plurality of intermediate optical prescriptions, the fatigue parameter associated with a visual fatigue level of a subject carrying out a visual task involving any kind of visual content, wherein each determined value of the fatigue parameter is associated with a respective one of the plurality of intermediate optical prescriptions; comparing the determined values of the fatigue parameter; and obtaining the optical prescription, based on the comparison of the determined values of the fatigue parameter. A system for obtaining an optical prescription is also disclosed.
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 5/16 - Dispositifs pour la psychotechnieTest des temps de réaction
39.
METHOD AND SYSTEM FOR READING AN OPTICAL PRESCRIPTION ON AN OPTICAL PRESCRIPTION IMAGE
A method for reading an optical prescription on an optical prescription image. The method includes detecting a region comprising the optical prescription on the optical prescription image; extracting the optical prescription and converting the optical prescription into machine-encoded optical prescription data; classifying a portion of the optical prescription data into one or more predetermined categories, to generate an optical prescription value associated with a respective one of the one or more predetermined categories; and determining whether the optical prescription value associated with the respective one of the one or more predetermined categories contains an error, and, if the optical prescription value contains the error, correcting the error within the optical prescription value, to generate a corrected optical prescription value associated with the respective one of the one or more predetermined categories. A system for reading an optical prescription on an optical prescription is also disclosed.
G06V 30/18 - Extraction d’éléments ou de caractéristiques de l’image
G06V 30/19 - Reconnaissance utilisant des moyens électroniques
G06V 30/262 - Techniques de post-traitement, p. ex. correction des résultats de la reconnaissance utilisant l’analyse contextuelle, p. ex. le contexte lexical, syntaxique ou sémantique
G16H 20/10 - 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 concernant des médicaments ou des médications, p. ex. pour s’assurer de l’administration correcte aux patients
40.
OPHTHALMIC LENS MOLDING SHELL AND PROCESS FOR MANUFACTURING SUCH A MOLDING SHELL
An ophthalmic lens molding shell (30) having two main faces (31, 32) and an edge face (33) surrounding the main faces, a first of said main faces being adapted to face another molding shell during the molding of the ophthalmic lens. The ophthalmic lens molding shell also comprises: ⋅—a flat facet (34) extending along an outer edge of the first main face, and ⋅—a first chamfer (36) extending along an outer edge of the flat facet, between said flat facet and said edge face.
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.
The present invention relates to a method of fast curing a polythiourethane based transparent casted substrate. comprising in a preferred embodiment providing a first component A comprising a polythiourethane pre-polymer Al having isocyanate or isothiocyanate end groups. providing a second component B comprising a polythiourethane pre-polymer BI having thiol end groups. mixing together first and second components A and B and filling a molding cavity of a casting mold assembly with the resulting mixture. curing said mixture to obtain a transparent substrate, wherein at least one latent catalyst that is heat-activatable is added in the process prior to curing step 4). and said 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
Optical lens intended to be worn by a wearer An optical lens intended to be worn by a wearer comprising: —a refraction area having a refractive power based on a prescription for said eye of the wearer; —a plurality of optical elements having a transparent optical function of not focusing an image on the retina of the eye of the wearer when the optical lens is worn in standard wearing conditions, —a zone of interest comprising a subset of the optical elements, each optical elements in the subset bearing a cylinder component on its surface, wherein the zone of interest is of at least 50 mm2, and the standard deviation of the orientations of the cylinder axis of each optical element comprised in the zone of interest is smaller than or equal to 15° with respect to a common predefined direction.
The invention relates to an optical lens comprising a substrate having a front main face and a rear main face, said rear main face of which being successively coated with: —(A) a first high refractive index sheet having a refractive index higher than 1.55, which does not comprise any TaaOs layer, —(B) a second low refractive index sheet having a refractive index of 1.55 or less in direct contact with the former sheet, —(C) a third high refractive index sheet having a refractive index higher than 1.55 in direct contact with the former sheet, —a monolayer sub-layer having a thickness higher than or equal to 100 nm in direct contact with the former sheet (C), —a multilayer interferential coating comprising a stack of at least 6 layers with at least one high refractive index layer and at least one low refractive index layer, wherein the outermost high refractive index layer of the multilayer interferential coating has a thickness lower than 40 nm, and the mean reflection factor RUV on said rear main face between 280 nm and 380 nm, weighted by the function W(λ) defined in the ISO 13666:1998 standard, is lower than 10%, for an angle of incidence of 35°.
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 mold element (350) is fabricated (305, 310, 315) using a first mold (5) with which microstructures (323) are integrally formed in relief on the mold element (350). A lens (340) is cast (320, 325, 330, 335) using a second mold (7) that includes the mold element (350) such that the microstructures (337) are integrally formed on the lens (340).
The invention relates to a method and a device for the production of an optical element (100) from a curable material by using an additive manufacturing technology. According to the invention, this method comprises a multiplicity of curing steps for curing said curable material inside outlines (C1) whose geometry are determined according to the geometry of said optical element, by applying a curing surface energy onto the curable material that is higher in a first area (A1) that extends along said outline than in a second area (A2) situated within the first area, the curing surface energy applied to the second area being strictly lower than a first predetermined energy threshold.
B29C 64/129 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p. ex. dépôt d’un cordon continu de matériau visqueux utilisant des couches de liquide à solidification sélective caractérisés par la source d'énergie à cet effet, p. ex. par irradiation globale combinée avec un masque
B29C 64/188 - Procédés de fabrication additive impliquant des opérations supplémentaires effectuées sur les couches ajoutées, p. ex. lissage, meulage ou contrôle d’épaisseur
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 method for calibrating a head-mounted device (1), the head-mounted device (1) comprising a frame (2) and at least one sensor (4) mounted on the frame (2), for measuring position and/or motion, the method being implemented while the head-mounted device (1) is worn on a wearer's head, the method comprising steps of: —detection (DET) of a known repetitive movement pattern of the wearer's head by the sensor (4), —acquisition (ACQ) of three-dimensional motion data by the sensor (4), —selection (SEL) of data relative to the movement pattern from the motion data, —numerical treatment (NUM) of the selected data to obtain a reference base relative to the wearer's head, and —calibrating (CAL) the sensor (4) based on the obtained reference base.
Substrate Holder Arrangement for Holding Curved Substrates During a Vacuum Coating Process and Vacuum Coating Apparatus Having such Substrate Holder Arrangement
An arrangement (10) for holding substrates (SS) curved along a main extension direction is receivable in a vacuum chamber (14) of a coating apparatus (12) and comprises a hub portion (18) rotatably drivable about a first rotational axis (RA1), arm members (20) radially extending away therefrom, and roller bodies (22) mounted on the arm members so as to be rotatably drivable about second rotational axis (RA2). The roller bodies carry fixtures (24) for holding the substrates with their main extension directions transverse to the respective second rotational axis, each arranged tiltable relative to the roller body about a tilt axis (TA) running transversely to said second rotational axis.
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
53.
METHOD FOR MANUFACTURING BY MACHINING AN OPHTHALMIC DEVICE
The disclosure relates to a method for manufacturing by machining an ophthalmic device made from a substrate, carrying out a roughing (110, 120) on a face of the substrate and next a finishing (130) on said face of the substrate, the method comprising blocking (110-150) the substrate by applying on the latter a first blocking force during the roughing and a second blocking force during the finishing, the first blocking force being higher than the second blocking force.
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 13/005 - Dispositifs de blocage, supports ou similairesDispositifs d'alignement
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
Disclosed is a retainer (10) for processing an optical workpiece. The retainer comprises a holding arrangement (72) and a support assembly (73) for the workpiece. A rubber-elastic membrane (75) mounted on a housing (74) has a retaining section (76), on the outer side (77) of which one surface of the workpiece can be placed to lie flat. The membrane, together with the housing defines a chamber (78) in which a plurality of separately longitudinally movable pins (79) of the support assembly are retained. A pin end (80) of each pin can be brought to bear against an inner side (81) of the retaining portion of the membrane and can be fixed relative to one another by a clamping mechanism (82) against longitudinal movement with respect to the housing. The holding arrangement for the workpiece is provided in or on the retaining section of the membrane.
The disclosure relates to a method for manufacturing by machining an ophthalmic device, comprising providing an optical function of the ophthalmic device to be obtained, selecting (100) an initial ophthalmic surface of the ophthalmic device intended to be manufactured, selecting (110) a manufacturing method intended to be implemented for machining the ophthalmic device and which introduces a reproducible defect, providing (120) a defect value which is function of the initial ophthalmic surface and reproducible defect and which would be introduced if the initial ophthalmic surface were produced by said manufacturing method, transforming (130) said initial ophthalmic surface into a transformed ophthalmic surface by compensating said defect, machining (150) by said manufacturing method the transformed ophthalmic surface in order to obtain an ophthalmic surface of the ophthalmic device having the optical function, wherein said manufacturing method comprises blocking (140) the ophthalmic device to be machined and the reproducible defect is a deformation defect which is due to the blocking the ophthalmic device when a face of which is machined for obtaining the ophthalmic surface of the ophthalmic device having the optical function.
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
A method for determining parameters of an image acquisition module of an electronic device, the electronic device having a display screen and the image acquisition module on the same side of the electronic device. The method includes an initialization step where a first pattern is displayed on the display screen, a positioning step where the electronic device is positioned in front of a mirror, an orientation step where the electronic device is oriented in a particular orientation, an orientation confirmation step where the electronic device is maintained in the particular orientation during a period of time, a reference point determination step where the set of fourth elements of the second pattern are detected and a reference point associated to each fourth element is determined, and an image acquisition module parameter determination step where the image acquisition module parameter is determined.
A lens element worn in front of an eye of a person includes a refraction area having a refractive power based on a prescription for the eye of the person, and a plurality of at least three optical elements, wherein the optical elements are configured so that along at least one section of the lens the mean sphere of optical elements increases from a point of the section towards the peripheral part of the section.
G02B 3/04 - Lentilles simples ou composées à surfaces non sphériques à surfaces continues engendrées par une rotation autour d'un axe, mais s'écartant d'une véritable sphère
G02C 7/06 - VerresSystèmes de verres bifocauxVerresSystèmes de verres multifocaux
G02C 7/08 - Verres auxiliairesDispositions pour faire varier la distance focale
60.
OPHTHALMIC LENS HAVING A HOLOGRAPHIC MIRROR ON A LOW-BIREFRINGENCE BASE LENS
An ophthalmic lens and a method of manufacturing the ophthalmic lens, the ophthalmic lens including a base lens that includes at least a layer of low-birefringence material and at least one holographic component recorded on a surface of the layer of low-birefringence material, and an auxiliary lens assembled to the base lens.
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
This thermoforming machine includes a thermoforming chamber having at least one heated air inlet through which heated air flows into the thermoforming chamber at a controlled pressure. The air inlet cooperates with a heated air flow distribution regulator located in the thermoforming chamber and through which the heated air flows out of the thermoforming chamber at a predetermined temperature. The regulator includes a heated air flow regulating mask receiving heated air flow, having a plurality of flow restricting elements providing different air flow restrictions.
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
65.
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
71.
DEVICE AND METHOD FOR DETERMINING A SHIFT IN A REFRACTION VALUE OF AN EYE OF A SUBJECT INDUCED BY AN OPTICAL FILTER
A device for determining a shift in a refraction value of an eye lighted by a light beam emitted by a light source and transmitted through an optical filter, wherein the device includes a memory storing a value of an initial spectral feature of the light source, a value of an optical feature of the optical filter, and a refraction shift model linking a magnitude associated with the shift and a spectral feature of the light beam. Further, the device includes processors programmed to determine a value of a spectral feature of the light beam based on the value of the initial spectral feature of the light source and the value of the optical feature of said optical filter; and determine the shift based on the refraction shift model and the value of the spectral feature of the light beam.
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 3/00 - Appareils pour l'examen optique des yeuxAppareils pour l'examen clinique des yeux
72.
A METHOD FOR SURFACING A LENS BLANK WITH A CUTTING TOOL
A method for surfacing a lens blank with a cutting tool A computer-implemented method for determining a compensated surface description data intended to be loaded into a surfacing machine to obtain a surface of an optical element by cutting a blank with a cutting tool of the surfacing machine, the method comprising:—providing a surface description data,—providing contact data from the surface description data,—generating a compensation map by using a transfer function,—determining a compensated surface description data from the generated compensation map and the surface description data.
G05B 19/18 - 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
73.
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
78.
OPHTHALMIC LENS WITH MODIFIED PERIPHERAL CURVATURE VARIATION
It is proposed a lens intended to be worn in front of or on an eye of a wearer and to provide a first refractive power (Rx) for correcting an abnormal refraction of the eye of the wearer; wherein the lens comprises a refractive area configured to provide the first refractive power (Rx) and a functional area configured to provide an optical function; and wherein on a first zone defined on the lens, more than 5% of the surface of said first zone has a local refractive power ranging from the first refractive power (Rx) minus 0.25 diopter and the first refractive power (Rx) plus 0.25 diopter, and more than 25% of the surface of said first zone covers the functional area.
A computer implemented method for measuring at least one fitting parameter of a spectacle frame on a wearer. The method includes obtaining at least one picture of the wearer wearing the spectacle frame, and determining at least an outline of the spectacle frame, so as to derive from the outline at least one fitting parameter of the spectacle frame on the wearer, the outline determination being implemented by artificial intelligence.
An optical article comprising at least: a base element having a front main surface and a rear main surface, and at least one interferential multilayered coating deposited onto the front main surface and/or the rear main surface of said substrate and comprising at least one layer having a low refractive index which is lower than 1.55, defined as “LI layer”, and at least one layer having a high refractive index which is equal to or higher than 1.55, defined as “HI layer”, the refractive indexes being expressed at 25° C. at a wavelength of 550 nm, wherein said interferential multilayered coating comprises an outermost sheet exhibiting a refractive index gradient which gradually decreases in the direction moving away from the base element and having a maximum value of refractive index lower than or equal to 1.55, and said interferential multilayered coating has preferably improved colorimetric characteristics.
A computing device that includes an interface module configured to transmit and receive signals between a local neural network and a global neural network. The local neural network, implemented by the computing device, is configured to process and analyze in-shop data related to wearers or prospective wearers of head-worn devices for predictive and personalized service provision, and the interface module enables participation of the local neural network in a federated learning process with the global neural network through the transmitted and received signals.
Disclosed is a method for the manufacturing of an optical element having a refractive index above 1.59 by additive manufacturing to the optical element obtained by such a method and to an ophthalmic lens including such an optical element.
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
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
A lens element intended to be worn in front of an eye of a person including a refraction area having a first refractive power based on a prescription for correcting an abnormal refraction of said eye of the person and a second refractive power different from the first refractive power, a plurality of at least three optical elements, at least one optical element having an optical function of not focusing an image on the retina of the eye so as to slow down the progression of the abnormal refraction of the eye.
G02B 3/04 - Lentilles simples ou composées à surfaces non sphériques à surfaces continues engendrées par une rotation autour d'un axe, mais s'écartant d'une véritable sphère
G02C 7/06 - VerresSystèmes de verres bifocauxVerresSystèmes de verres multifocaux
G02C 7/08 - Verres auxiliairesDispositions pour faire varier la distance focale
88.
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
A calculation module for determining a localization, system, eyewear and computer implemented method. The calculation module is configured to receive, from a spectrophotometer of an optical device, data representing a power density of at least two spectral components of a light received by the spectrophotometer and to determine the localization using the power density of the at least two spectral components.
A system that includes an optical device intended to be worn by a user and a calculation module. The optical device includes a light sensor, the light sensor being located in an internal side of the optical device and in a vicinity of a front part of the optical device, the light sensor being configured to determine an amount of light that it receives, and the calculation module being configured to determine an amount of backlight received by the optical device using the amount of light received by the light sensor.
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
92.
SYSTEM COMPRISING AN OPTICAL DEVICE AND A CONTROLLER
A system and a method for controlling a module of an optical device intended to be used by a user. The system includes the optical device and a controller, and includes a first sensor, a second sensor, and a module. The controller is configured to determine a situation of the user, using a model and first data received from the first sensor and to determine a confidence level associated with the situation. When the confidence level is below a threshold, the controller is also configured to activate the second sensor and to update the situation using second data received from the second sensor. The controller is also configured to control the module according to the situation.
A method of forming an ophthalmic laminate lens, includes: forming a planar laminate by adhering a first polycarbonate layer to a first side of a thermoplastic elastomer layer, and adhering a second polycarbonate layer to a second side of the thermoplastic elastomer layer, the first polycarbonate layer having a thickness greater than 250 μm, the second polycarbonate layer having a thickness greater than 250 μm, and the thermoplastic elastomer layer having a thickness in a range of 15 μm to 150 μm; thermoforming the planar laminate into a curved laminate, the curve laminate having a pre-molding curvature; arranging the curved laminate in a mold; and molding, via the mold set at a predetermined temperature and a predetermined pressure, the curved laminate with a polymer melt into a curved lens.
B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
B29K 69/00 - Utilisation de polycarbonates comme matière de moulage
B29K 75/00 - Utilisation de polyurées ou de polyuréthanes comme matière de moulage
B32B 25/08 - Produits stratifiés composés essentiellement de caoutchouc naturel ou synthétique comprenant du caoutchouc comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique de résine synthétique
G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
94.
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.
Calculation module comprising a memory and a processor. The calculation module is configured to select an adapted semi-finished lens blank among a plurality of semi-finished lens blanks for manufacturing an ophthalmic lens to be mounted in a frame of an eyewear. The eyewear is intended to be worn by a user. The calculation module is configured to determine a geometrical parameter value of the ophthalmic lens to be manufactured from a test semi-finished lens blank of the plurality, the geometrical parameter value of the ophthalmic lens depending on a base-curve of the test semi-finished lens blank, a refractive index of the test semi-finished lens blank, a prescription of the user and/or a characteristic parameter value of the frame. The calculation module is configured to select the adapted semi-finished lens blank based on the geometrical parameter value of the ophthalmic lens.
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
97.
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
100.
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.
