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 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing light sensitivity, e.g. adaptationSubjective types, i.e. testing apparatus requiring the active assistance of the patient for testing colour vision
A61B 5/37 - Intracranial electroencephalography [IC-EEG], e.g. electrocorticography [ECoG]
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
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 - LensesLens systems bifocalLensesLens systems multifocal
B24B 9/14 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
B24B 13/005 - Blocking means, chucks or the likeAlignment devices
3.
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 - Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
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 - Producing optical elements, e.g. lenses or prisms
B29C 64/106 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
B29C 64/188 - Processes of additive manufacturing involving additional operations performed on the added layers, e.g. smoothing, grinding or thickness control
B33Y 40/20 - Post-treatment, e.g. curing, coating or polishing
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 - Producing optical elements, e.g. lenses or prisms
B29C 45/40 - Removing or ejecting moulded articles
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
12.
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 - Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating separate articles
B05C 13/02 - Means for manipulating or holding work, e.g. for separate articles for particular articles
(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 or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
B24B 49/03 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or workArrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent according to the final size of the previously ground workpiece
B24B 49/12 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or workArrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
G01B 11/24 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
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 - Arrangements for secret or secure communicationsNetwork security protocols the encryption apparatus using shift registers or memories for blockwise coding, e.g. D.E.S. systems
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 - Producing optical elements, e.g. lenses or prisms
B23Q 7/04 - Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of grippers
B25J 15/06 - Gripping heads with vacuum or magnetic holding means
B24B 13/005 - Blocking means, chucks or the likeAlignment devices
B65G 47/91 - Devices for picking-up and depositing articles or materials incorporating pneumatic, e.g. suction, grippers
G03F 7/00 - Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printed surfacesMaterials therefor, e.g. comprising photoresistsApparatus specially adapted therefor
B24B 41/06 - Work supports, e.g. adjustable steadies
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.
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
C08G 18/18 - Catalysts containing secondary or tertiary amines or salts thereof
23.
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 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect characterised by the electrochromic material, e.g. by the electrodeposited material comprising inorganic material
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.
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
29.
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 - Producing optical elements, e.g. lenses or prisms
B29C 64/112 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using individual droplets, e.g. from jetting heads
B29C 64/194 - Processes of additive manufacturing involving additional operations performed on the added layers, e.g. smoothing, grinding or thickness control during lay-up
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 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuitySubjective types, i.e. testing apparatus requiring the active assistance of the patient for determination of refraction, e.g. phoropters
A61B 3/103 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for determining refraction, e.g. refractometers, skiascopes
A61B 3/113 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for determining or recording eye movement
A61B 3/14 - Arrangements specially adapted for eye photography
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
34.
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 - Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group containing two hetero rings linked by a chain containing hetero atoms as chain links
C07C 211/00 - Compounds containing amino groups bound to a carbon skeleton
C07D 403/14 - Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group containing three or more hetero rings
38.
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.
B29C 45/78 - Measuring, controlling or regulating of temperature
B29C 45/56 - Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
B29C 43/36 - Moulds for making articles of definite length, i.e. discrete articles
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.
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 - Producing optical elements, e.g. lenses or prisms
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
B24B 55/12 - Devices for exhausting mist of oil or coolantDevices for collecting or recovering materials resulting from grinding or polishing, e.g. of precious metals, precious stones, diamonds or the like
B29B 17/00 - Recovery of plastics or other constituents of waste material containing plastics
B29B 17/02 - Separating plastics from other materials
B29L 11/00 - Optical elements, e.g. lenses, prisms
42.
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 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
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 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control arrangements for compensation, e.g. for backlash, overshoot, tool offset, tool wear, temperature, machine construction errors, load, inertia
B24B 9/14 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
45.
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 - Producing optical elements, e.g. lenses or prisms
47.
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 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
C07C 321/14 - Sulfides, hydropolysulfides, or polysulfides having thio groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton
C07C 321/00 - Thiols, sulfides, hydropolysulfides or polysulfides
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 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
C07C 321/00 - Thiols, sulfides, hydropolysulfides or polysulfides
C07C 321/08 - Thiols having mercapto groups bound to acyclic carbon atoms of an acyclic unsaturated carbon skeleton
C07C 321/18 - Sulfides, hydropolysulfides, or polysulfides having thio groups bound to acyclic carbon atoms of an acyclic unsaturated carbon skeleton
C07C 321/28 - Sulfides, hydropolysulfides, or polysulfides having thio groups bound to carbon atoms of six-membered aromatic rings
C07C 323/52 - Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton the carbon skeleton being acyclic and saturated
68.
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))
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 - Devices for presenting test symbols or characters, e.g. test chart projectors
A61B 3/028 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuitySubjective types, i.e. testing apparatus requiring the active assistance of the patient for determination of refraction, e.g. phoropters
73.
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 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for determining or recording eye movement
A61B 5/11 - Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb
A61B 5/107 - Measuring physical dimensions, e.g. size of the entire body or parts thereof
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
74.
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 - Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group containing three or more hetero rings
C07D 409/04 - Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings directly linked by a ring-member-to-ring- member bond
C07D 409/14 - Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing three or more hetero rings
C07D 519/00 - Heterocyclic compounds containing more than one system of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring system not provided for in groups or
78.
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 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by monitoring or safety
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
B24B 13/02 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor by means of tools with abrading surfaces corresponding in shape with the lenses to be made
B24B 13/06 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor grinding of lenses, the tool or work being controlled by information carrying means, e.g. patterns, punched tapes, magnetic tapes
B24B 49/03 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or workArrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent according to the final size of the previously ground workpiece
B24B 49/12 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or workArrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
B24B 51/00 - Arrangements for automatic control of a series of individual steps in grinding a workpiece
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 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuitySubjective types, i.e. testing apparatus requiring the active assistance of the patient for determination of refraction, e.g. phoropters
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 243/00 - Heterocyclic compounds containing seven-membered rings having two nitrogen atoms as the only ring hetero atoms
C07D 253/00 - Heterocyclic compounds containing six-membered rings having three nitrogen atoms as the only ring hetero atoms, not provided for by group
G02C 7/10 - Filters, e.g. for facilitating adaptation of the eyes to the darkSunglasses
85.
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 - Filters, e.g. for facilitating adaptation of the eyes to the darkSunglasses
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
G01J 3/46 - Measurement of colourColour measuring devices, e.g. colorimeters
G05B 17/00 - Systems involving the use of models or simulators of said systems
D06P 1/00 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed
B01F 101/30 - Mixing paints or paint ingredients, e.g. pigments, dyes, colours, lacquers or enamel
G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
86.
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 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for computer-aided diagnosis, e.g. based on medical expert systems
A61B 3/04 - Trial framesSets of lenses for use therewith
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
G16H 20/00 - ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance
A61B 3/113 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for determining or recording eye movement
G16H 50/30 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for calculating health indicesICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for individual health risk assessment
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 - Blocking means, chucks or the likeAlignment devices
B24B 9/14 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
88.
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 - Producing optical elements, e.g. lenses or prisms
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
89.
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 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
90.
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.
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 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuitySubjective types, i.e. testing apparatus requiring the active assistance of the patient for determination of refraction, e.g. phoropters
A lens element comprising: - a refractive area configured to provide a refractive power, - a plurality of at least twenty optical elements having a transparent optical function of not focusing an image on the retina of the eye of the wearer when the lens element is worn in standard wearing conditions, wherein at least two reference optical elements from the plurality of optical elements are on either side of a reference point of the lens element and standout from the plurality of optical elements.
Calculation module, system and computer-implemented method for determining an identity of an individual. The calculation module is configured to obtain a signal representing vibrations produced by heartbeats of a heart of the individual, to determine a representative segment of the signal and to compare the representative segment with a plurality of model segments to determine the identity of the individual, the model segments being associated respectively with model identities.
The invention relates to an optometry device for testing the eyes of an individual, comprising a computer with one or more processors programmed to perform a sequence of subjective tests comprising at least a first and a second predetermined subjective test, leading to the determination of values of one or more refractive features of one or more of the eyes of the individual wherein said one or more processors are programmed to: a) perform said first predetermined subjective test, thereby determining a provisory value of a first refraction feature of the eye of the individual, b) at the end of said first predetermined subjective test, perform a verification test for detecting a potential error in said provisory value of the first refraction feature determined in step a), c) based on the result of said verification test, determine a next subjective test to be performed or ending the sequence of subjective tests.
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
A61B 3/028 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuitySubjective types, i.e. testing apparatus requiring the active assistance of the patient for determination of refraction, e.g. phoropters
A61B 3/032 - Devices for presenting test symbols or characters, e.g. test chart projectors
A61B 3/04 - Trial framesSets of lenses for use therewith
A61B 3/06 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing light sensitivity, e.g. adaptationSubjective types, i.e. testing apparatus requiring the active assistance of the patient for testing colour vision
95.
TRANSMISSION OPTICAL SYSTEM OF DETERMINED RESIDUAL REFLECTION COLOR, SYSTEM FOR MANUFACTURING THEREOF AND APPARATUS FOR EVALUATING A DIFFERENCE IN RESIDUAL REFLECTION COLOR
The invention concerns a transmission optical system (1). According to the invention, the transmission optical system (1) comprises an optical base element (14) having a first face (11) and a second face (12), an interferential coating (13) on the first face providing the transmission optical system with a mean visible light reflection factor Rv that is less than or equal to 2.5 %, said transmission optical system presenting by reflection on said first face a residual reflection color, wherein the transmission optical system comprises a residual color identifier (21) based in part on colorimetric coordinates of the transmission optical system in CIELab color space and in part on colorimetric coordinates of the transmission optical system in CIELUV color space.
B24B 9/14 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
B24B 49/16 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or workArrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the load
B24B 51/00 - Arrangements for automatic control of a series of individual steps in grinding a workpiece
B23C 3/16 - Working surfaces curved in two directions
B24B 47/22 - Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation
97.
PRISMATIC OPTICAL ELEMENTS FOR PRESBYOPIA CORRECTION
A lens element intended to be worn in front of an eye of a wearer, the lens element comprising: - a holder having at least one first refractive power, - a plurality of sets of optical elements superimposed on the holder, each set being formed by a plurality of optical elements having a common focal point Fi associated with at least an optical power Pi, characterized in that for each set of optical elements, a prism angle of each optical element of this set varies according to the distance between the optical element and the common focal point Fi of said set of optical elements
TITLE: Calculation module, system and computer-implemented method for determining at least one cause of a visual fatigue of a patient Calculation module, system and computer-implemented method for determining at least one cause of a visual fatigue of a patient. The calculation module is configured to obtain values associated respectively with physiological parameters of the patient, to obtain causality coefficients associated respectively with the physiological parameters, to normalize the values to obtain normalized values associated respectively with the physiological parameters, to determine normalized scores associated respectively with the physiological parameters, based on the causality coefficients and the normalized values and to select at least one of the physiological parameters, using the normalized scores, as the at least one cause of the visual fatigue.
G16H 50/20 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for computer-aided diagnosis, e.g. based on medical expert systems
G16H 50/30 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for calculating health indicesICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for individual health risk assessment
G16H 50/00 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics
99.
OPTOMETRY SYSTEM FOR DETERMINING, FOR EACH EYE OF AN INDIVIDUAL, A MESOPIC VALUE OF A VISION CORRECTION POWER OF A CORRECTIVE LENS
The invention relates to such an optometry system comprising a computer with one or more processors programmed to: a) control the optometry device to determine a photopic value of said vision correction power of said corrective lens for each eye of said individual by achieving a photopic subjective refraction test in photopic vision, or to retrieve an initial vision correction value stored in a memory of the optometry system, or to collect an initial vision correction value, b) validate a step of placing the eyes of the individual in light conditions ensuring scotopic vision of the eye of the individual for an amount of time, c) validate a step of placing the eyes of the individual in light conditions ensuring mesopic vision of the eyes of the individual and d) control the optometry device to achieve a mesopic subjective refraction test comprising: - fogging both eyes with a predetermined fogging spherical power, - iteratively adding to both eyes a same negative predetermined value ofspherical power to said fogging test value and determining mesopic binocular visual acuities of the eyes until a maximum value of the mesopic binocular visual acuity is reached, thereby determining for each eye a mesopic raw value of the vision correction power, e) determining said mesopic value of vision correction power based on said mesopic raw value of the vision correction power.
A61B 3/028 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuitySubjective types, i.e. testing apparatus requiring the active assistance of the patient for determination of refraction, e.g. phoropters
This device (10) for clamping any ophthalmic lens (12) including non-circular lenses, comprises: a supporting structure (14) having an opening (16) adapted for introducing a lens (12) therein; at least four arms (18) adapted to clamp the lens (12), each of the arms (18) being rotatable around a respective arm rotation shaft (180) fixed on the supporting structure (14) around the opening (16) and perpendicular to the arm (18) and to the supporting structure (14), the arms (18) being positioned so as to surround the opening (16), each of the arms (18) having an internal part (182) and an external part (184) opposite the internal part (182) with respect to the respective arm rotation shaft (180), the internal part (182) being closer than the external part (184) to a barycenter of the arms (18); a synchronization ring (20) having a respective link with the external part (184) of each of the arms (18) and being adapted to synchronize a movement of the arms (18).
B24B 13/005 - Blocking means, chucks or the likeAlignment devices
B24B 49/12 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or workArrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
patents
