An optical device for capturing images of an eye of an individual, the optical device having a first measurement channel and a second measurement channel. The first measurement channel generates at least one first lighting beam directed toward the eye and along a first axis and to capture at least one first image of the eye when illuminated by the at least one first lighting beam. The second measurement channel is generates at least one second lighting beam directed toward the eye and along a second axis separated from the first axis by at least 5°, for example at least 10° or at least 20° and to capture at least one second image of the eye when illuminated by the at least one second lighting beam. The first measurement channel and the second measurement channel are synchronized together.
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 3/14 - Arrangements specially adapted for eye photography
2.
METHOD AND DEVICE FOR EVALUATING REFRACTION OF AN EYE OF AN INDIVIDUAL USING MACHINE LEARNING
A method for estimating refraction of an eye of an individual using an image capturing device, the method including acquiring eccentric photorefraction images of the eye using the image capturing device when the eye is successively illuminated by a plurality of light sources, analyzing the eccentric photorefraction images by a calculation module in order to determine at least one refraction parameter, the analyzing is carried out by machine learning using at least one neural network configured to determine the at least one refraction parameter from the eccentric photorefraction images, the plurality of light sources in the step of acquiring being positioned at least two different eccentric distances from the optical axis of the image capturing device and/or arranged along at least two different directions transverse to the optical axis of the image capturing device.
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 3/14 - Arrangements specially adapted for eye photography
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 made; Optical 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
4.
OPTICAL MATERIAL DERIVED FROM A POLYMERIZABLE COMPOSITION CONTAINING TERMINAL ALKYNE AND THIOL FUNCTIONS
The invention relates to an optical material having a refractive index higher than or equal to 1.50 obtained by polymerization of a polymerizable composition comprising at least one 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 made; Optical 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
A hinge assembly for eyewear includes an anchor element configured to be applied to a front of eyewear; an anchor box configured to be applied to a temple, the anchor box has at least one housing chamber with an inner retaining member; at least one hinging member with at least one end portion rotatably coupled to the anchor element and at least one shaft portion ending with at least one head portion; at least one elastic element passed through by at least one respective shaft-like shaped portion and, from one side, in contact with the inner retaining member and, from the other side, in contact with the at least one head portion; wherein the hinge assembly reversibly passes from a first stable opening position to a second stable closing position and vice versa and from the first stable opening position to a third unstable overtravel position and vice versa.
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 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 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.
C08G 18/38 - Low-molecular-weight compounds having hetero atoms other than oxygen
C08G 18/75 - Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
C08G 18/67 - Unsaturated compounds having active hydrogen
9.
COMPUTER-IMPLEMENTED METHOD, APPARATUS, SYSTEM AND COMPUTER PROGRAM FOR PROVIDING A USER WITH A REPRESENTATION OF AN EFFECT OF A SIGHTEDNESS IMPAIRMENT CONTROL SOLUTION
A computer-implemented method, apparatus, system, and computer-readable storage medium for providing a user with a representation of an effect of a sightedness impairment control solution on the user. The computer-implemented method includes obtaining data representative of at least one characteristic of the sightedness impairment control solution, at least one current characteristic of the user and behaviour of the user, determining, based on a model and the data, at least one first future characteristic of the user if the user uses the sightedness impairment control solution and at least one second future characteristic of the user if the user does not use the sightedness impairment control solution, and generating a first image based on the at least one first future characteristic and a second image based on the at least one second future characteristic.
G16H 50/50 - ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for simulation or modelling of medical disorders
G16H 50/20 - ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for computer-aided diagnosis, e.g. based on medical expert systems
10.
METHOD FOR THERMOFORMING A FILM BY THERMAL SHRINKAGE AND LAMINATION THEREOF ON AN OPTICAL ARTICLE
A method comprising providing an article having a non-zero radius of curvature and a thermoplastic film, moving relatively to each other said thermoplastic film and said article to bring them into contact, applying heat to the thermoplastic film so that the heated thermoplastic film shrinks and takes the shape and curvature of the article, resulting in a thermoformed thermoplastic film, and optionally laminating said thermoformed thermoplastic film on a surface of an optical article by means of a layer of adhesive, said layer of adhesive being positioned between the optical article and the thermoplastic film.
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.
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
14.
METHOD FOR ENCAPSULATING A MICROSTRUCTURED LENS BY PIPC
A method of forming an optical lens includes providing a first mold insert of a molding device having a contacting surface, the contacting surface including a plurality of inverted microstructures disposed on the contacting surface, each microstructure of the plurality of inverted microstructures having a shape inversely related to a shape of microstructures on a surface of a molded base lens; replacing the first mold insert with a second mold insert having a contacting surface thereof; applying a curable coating to a surface of the base lens having the microstructures formed thereon; pressing the contacting surface of the second mold insert into at least a portion of the curable coating applied to the surface of the base lens; and curing the curable coating into a curable layer, the microstructures being substantially entirely encapsulated in the curable layer.
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
An apparatus and a related method are for unpacking optical elements disposed in a package box which is closed. The apparatus includes a package identification unit equipped with a reader for identifying the package box, a first interface to exchange data with a package database containing information related to the dimensions and identity of package boxes, to the orientation of an optical element within a package box, to the presence or not of a plastic cup within a package box, a laser cutting unit to cut a package box according to a dedicated cutting pattern, an opening and take-out unit for opening a package box which has been cut according to the dedicated cutting pattern, and for taking the optical element out of the opened package, and a waste management unit to sort out the empty package box and separately, when present, a plastic cup.
B65B 69/00 - Unpacking of articles or materials, not otherwise provided for
B25J 11/00 - Manipulators not otherwise provided for
G06K 7/14 - Methods or arrangements for sensing record carriers by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
16.
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 method and system for determining a risk of an onset or progression of myopia over a timeframe. The method includes determining a value of at least one parameter associated with vision condition of a subject, the at least one parameter including a sensitivity parameter of the subject, the sensitivity parameter being relative to the sensitivity of the subject to a variation of at least one dioptric optical feature of at least one ophthalmic lens placed in front of at least one eye of the subject. The method also includes determining the subject's risk of the onset or progression of myopia over the timeframe, based on the determined value of the at least one parameter.
G16H 50/30 - ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for individual health risk assessment
A61B 3/028 - Subjective 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
G16H 10/60 - ICT specially adapted for the handling or processing of patient-related medical or healthcare data for patient-specific data, e.g. for electronic patient records
G16H 50/50 - ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for simulation or modelling of medical disorders
G16H 50/70 - ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for mining of medical data, e.g. analysing previous cases of other patients
20.
METHOD FOR MANUFACTURING AN OPHTHALMIC ELEMENT COMPRISING A FILM STRUCTURE
A method for manufacturing an ophthalmic element that comprises a vision base element (12) and a film structure (14) adhered to said vision base element allows limiting or suppressing wrinkles and delaminations. This method implements an auxetic part (27) within a sacrificial film portion (26) that belongs initially to the film structure. In this way, stresses generated in a useful area (24) of the film structure by the sacrificial film portion are reduced. The sacrificial film portion is then removed so that only the useful area of the film structure remains in the ophthalmic element.
B32B 38/00 - Ancillary operations in connection with laminating processes
B32B 37/18 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of discrete sheets or panels only
G02C 7/08 - Auxiliary lenses; Arrangements for varying focal length
21.
A METHOD FOR ESTIMATING THE POSITION OF THE OPTICAL CENTER OF AN OPHTHALMIC LENS
This method for estimating a position of an optical center of an ophthalmic lens mounted on a frame, where an image of the frame is obtained by an image capture device, includes: detecting the lens in a stream of images of the frame obtained by the image capture device; obtaining a plurality of dimensional parameters, either of the frame, or of the lens; determining the estimated position of the optical center based on the detected lens and either the plurality of frame dimensional parameters, or the plurality of lens dimensional parameters.
A lens element for a spectacle lens, a contact lens or an intraocular lens, intended to be worn by a wearer having a refraction area having a refractive power based on a prescription for said eye of the wearer and a plurality of n optical elements, at least one of the n optical elements having an optical function of not focusing an image on the retina of the eye of the wearer, the kth optical element being located in a domain defined by a closed contour, k being a positive integer equal or greater than 2 and smaller or equal to n, a coating layer may be deposited on the lens element, wherein, without taking the potential coating layer into account, the least one kth optical element presents as a standard deviation of sphere values of at least 0.4 dpt, where is defined as, H(xi, yi) mean optical curvature operator at position xi, yi of the kth optical element in its domain, being the mean of the mean optical curvatures over the whole domain of the kth optical element, being an integer of number all positions xi yi in the domain of the k-th optical element and being greater than 100.
A method for determining an optical design of a pair of progressive addition lenses to be worn in front of eyes of a wearer, including selecting a starting pair of progressive addition lenses suitable for the near dioptric corrections and the far dioptric corrections; determining, for a given locomotion posture of the wearer, in which the wearer wears the starting pair of progressive addition lenses, a set of differences in prismatic deviation induced by the starting pair of progressive addition lenses between a left eye and a right eye of the wearer over a set of gaze directions; and determining said optical design based on the near and far dioptric corrections, the set of differences, and at least one binocular motility parameter.
A device (10) for retaining a prismatic spectacle lens (12) at one workpiece surface (14) for processing of the other workpiece surface (16) comprises lower and upper parts (20, 22). The lower part has a base (24) with a holding interface (26) and a wedge section (28). The lower part and upper part are rotatable relative to one another by their mutually facing wedge sections about a rotational axis (DA) inclined with respect to the base axis and retention axis so as to tilt the retaining section and base relative to one another. A wedge orientation arrangement comprises an orientation aid (34) at the upper part and/or an abutment (36) between the upper part and lower part, which defines a relative rotational angle end position of the upper part and lower part corresponding with a minimum or maximum tilt of the retaining section with respect to the base.
A computer-implemented method, an apparatus, a system and a computer program for controlling a sightedness impairment of a subject, the method comprising the steps of receiving (201) an image to display to the subject, determining (202) a spatial frequency power spectrum of the received image, generating (203) an intermediate image by modifying a slope of the spatial frequency power spectrum of the received image, generating (204) a modified image based on the intermediate image and commanding (205) a display to the subject of the modified image.
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
27.
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 work; Accessories 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 work; Accessories 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 work; Arrangements 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 work; Arrangements 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
A device to assess an ocular motility of a subject, the device having at least one screen configured to display a first image to a first eye of the subject and a second image to a second eye of the subject, the first image comprising a first element that is fixed and the second image comprising a second element that moves according to a movement of the subject.
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 3/00 - Apparatus for testing the eyes; Instruments for examining the eyes
30.
LIQUID POLYMERIZABLE ALLYLIC COMPOSITIONS COMPRISING LAKE PIGMENTS
Disclosed is a polymerizable liquid composition for the manufacture of an optical article, including: a) at least one allyl monomer or allyl oligomer, b) at least one initiator for the polymerization of the allyl monomer or allyl oligomer, and c) at least one lake pigment including an organic ionic colorant and at least one compound including metal atoms having a charge opposite to that of the organic ionic colorant, d) wherein the lake pigment is not contained in nanoparticles, which are not the lake pigment itself, if the lake pigment is in the form of particles dispersed in the composition.
G02B 1/04 - Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
31.
COMPUTER IMPLEMENTED METHOD FOR PREDICTING A LEVEL OF QUALITY OF A VACUUM INTO A VACUUM CHAMBER OF A COATING MACHINE, AND CORRESPONDING DEVICE
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.
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.
A wearable device for determining a parameter representative of a visual acuity of a user, including a displaying unit configured to display at least one image to at least one eye of the user when the device is worn by the user, an optical unit disposed between the displaying unit and at least one eye of the user when the device is worn by the user, a diffuser disposed between the optical unit and at least one eye of the user when the device is worn by the user so that the diffuser faces at least one eye of the user, at least one light source for stimulating at least one eye of the user, and a sensing unit configured to acquire at least one signal representative of a visual acuity of the user.
A method for machining optical workpieces has the following steps: i) providing the blank that is to be machined at least on the rear side and edge; ii) receiving the blank without a block in order to retain it in a supported manner; iii) machining the blank on the front side by use of a first tool to form a peripheral geometric shape with a depth greater than or equal to the edge thickness of the semifinished product to be formed; iv) receiving the workpiece to retain it in a supported manner on the front side; and v) machining the workpiece on the rear side by use of a second tool to form the semifinished product with the predetermined surface geometry on the rear side.
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
37.
METHOD AND SYSTEM FOR DETERMINING A TARGET VALUE OF A PARAMETER MEASURED BY A PORTABLE DEVICE
A method for determining a target value for a parameter over an upcoming time window, the method including providing a set of data including, for each preceding time window, the value reached by the parameter and the associated target value, selecting an appropriate time scale among at least two time scales, retrieving data relating to preceding time windows based on the time scale, calculating a success factor based on the comparison between the value reached by the parameter over one or more preceding time windows and the associated target value, and determining the target value based on the success factor and the value reached by the parameter over each preceding time window of the retrieved data. The parameter can be a number of steps measured by a portable pedometer-type device worn by an individual.
A61B 5/11 - Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb
A61B 5/00 - Measuring for diagnostic purposes ; Identification of persons
G16H 50/20 - ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT 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 mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for individual health risk assessment
38.
ELECTROCHROMIC COMPOUNDS, COMPOSITIONS AND OPTICAL ARTICLES CONTAINING THEM
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 dark; Sunglasses
39.
Nanoparticles of Encapsulated Light-Absorbing Agent, Preparation Thereof and Ophthalmic Lens Comprising Said Nanoparticles
The invention relates to nanoparticles of a composite material comprising a light absorbing agent dispersed in a matrix of a mineral oxide, to a method for the preparation of such nanoparticles, to the use of said method to modify the hue of nanoparticles of composite material comprising a light absorbing agent, and to an ophthalmic lens comprising such nanoparticles.
G02B 1/04 - Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
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 dark; Sunglasses
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
G01J 3/46 - Measurement of colour; Colour 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 ,
41.
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 mining; ICT 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 frames; Sets of lenses for use therewith
A61B 3/00 - Apparatus for testing the eyes; Instruments 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 mining; ICT 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 like; Alignment devices
B24B 9/14 - Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories 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
43.
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 made; Optical coatings for optical elements made of organic materials, e.g. plastics
44.
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 made; Optical coatings for optical elements made of organic materials, e.g. plastics
45.
METHOD FOR MANUFACTURING AN OPHTHALMIC LENS, SUPPORT AND MANUFACTURING SYSTEM
A method for manufacturing an ophthalmic lens using an additive manufacturing technology, the ophthalmic lens having at least one useful optical surface and a peripheral region surrounding at least in part the useful optical surface, includes the steps of: providing a support; manufacturing a part of the ophthalmic lens including a portion of the peripheral region, and being in contact with the support by the portion of the peripheral region so that the support bears the part of the ophthalmic lens being manufactured while the useful optical surface is free from any contact with the support. A support designed to bear an ophthalmic lens and a manufacturing system are also described.
B29C 64/40 - Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof
B29C 64/124 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
B29L 11/00 - Optical elements, e.g. lenses, prisms
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
46.
Retainer for the Processing of Optical Workpieces, Particularly Spectacle Lenses
A retainer for the processing of workpieces comprises a housing with a holding arrangement for a workpiece to be processed as well as a support arrangement therefor, which comprises a plurality of longitudinally displaceable pins accommodated in a chamber bounded by the housing. The pins are selectively fixable by a clamping mechanism with their pin ends for firmly supporting the workpiece. The clamping mechanism has at least one force transmission element which is movable with respect to the pins by forces able to be applied by fluid so as to selectively clamp the pins in an unactuated state of the retainer or free them in an actuated state of the retainer.
An elastic membrane for a retainer for the processing of optical workpieces is constructed with a securing section for mounting on a housing of the retainer, so as to bound therein a chamber by a retaining section which is connected with the securing section. The retaining section has an outer side, on which a workpiece can be placed over an area by a workpiece surface, and an inner side, which is constructed to contact a support arrangement, for the workpiece. The retaining section has a perforation with at least one opening connecting the inner side and outer side and by way of which a vacuum applied to the chamber can be conducted to the outer side. Associated with the opening is a semi-permeable, functional membrane which extends merely locally in a region directly adjoining the opening.
A calculation module for determining a probability model of a parameter of a first reference posture of a subject, the probability model being intended to determine at least a production parameter of an optical element suitable for the subject, the calculation module being configured: to determine at least one value of a parameter of a second reference posture, during an occurrence of the second reference posture, and to determine the probability model of a parameter of a first reference posture based on the at least one value of the parameter of the second reference posture.
A61B 3/00 - Apparatus for testing the eyes; Instruments for examining the eyes
G16H 50/50 - ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for simulation or modelling of medical disorders
49.
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.
Method for determining a lens element intended to be mounted on a spectacle frame and to be worn in front of an eye of a wearer, the lens element comprising; —a refraction area having a refractive power based on prescribed refractive power Px for said eye of the wearer, the refraction area comprising at least a central zone, —a plurality of optical elements having an optical function of not focusing an image on the retina of the eye of the wearer, wherein the method comprises: —obtaining frame data representing the spectacle frame on which the lens element is intended to be mounted; —obtaining wearer's data representing at least one parameter of the face of the wearer, —determining fitting data representing the spectacles positioned on the face of the wearer based on the frame data and the wearer's data; and —optimizing at least one parameter of the optical elements based on the fitting data.
The invention relates to a method for issuing an input to a computer from a head-mounted device, the head-mounted device comprising a processing unit and a memory as well as at least one position and/or movement sensor, the head-mounted device being in communication with the computer, the method being implemented while the head-mounted device is worn on a wearer's head.
The invention relates to a method for issuing an input to a computer from a head-mounted device, the head-mounted device comprising a processing unit and a memory as well as at least one position and/or movement sensor, the head-mounted device being in communication with the computer, the method being implemented while the head-mounted device is worn on a wearer's head.
The method comprises steps of:
acquisition of position and/or movement data representative of the movement of the wearer's head by the position and/or movement sensor,
detection of a specific movement pattern based on said position and/or movement data, the specific movement pattern being taken from a library of movement patterns,
determination of a specific input associated with the specific movement pattern in the library, and
issuance of the specific input to the computer.
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
G06F 3/02 - Input arrangements using manually operated switches, e.g. using keyboards or dials
G06F 3/0346 - Pointing devices displaced or positioned by the user; Accessories therefor with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors
G06F 3/0354 - Pointing devices displaced or positioned by the user; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
52.
DEVICE AND METHOD FOR ESTIMATING A REFRACTIVE ERROR FROM MEASURED VISUAL ACUITY
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.
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.
Holding devices adapted for holding edged optical elements, manufacturing systems including such holding devices, and a corresponding method for manufacturing a compound optical element. The holding devices include a base for supporting a main surface of an edged optical element and either exactly three pegs or a plurality of clamps. The pegs are arranged so that two pegs are in contact with a first area of the side surface of an edged optical element positioned on the base while the remaining peg is in contact with a second area of the side surface only if a specific portion of the first or of the second area is within a specific position and orientation range about three perpendicular axes. The clamps are arranged to collectively hold an edged optical element positioned on the base by restricting its mobility with respect to three degrees of freedom.
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 eyes; Instruments for examining the eyes
A61B 3/028 - Subjective 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 frames; Sets of lenses for use therewith
A61B 3/06 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing colour vision
57.
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.
A method for forming a mold insert includes forming a stamp, a surface of the stamp including a plurality of inverted microstructures formed thereon; and pressing the stamp into a medium disposed on a surface of a first mold insert to form a microstructured film, the microstructured film including a plurality of microstructures formed on a surface of the microstructured film based on the plurality of inverted microstructures, the plurality of microstructures being complementary to the plurality of inverted microstructures.
B29C 33/38 - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING - Details thereof or accessories therefor characterised by the material or the manufacturing process
B29C 33/42 - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING - Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
B29K 663/00 - Use of epoxy resins for preformed parts, e.g. for inserts
B29L 11/00 - Optical elements, e.g. lenses, prisms
59.
LOW THERMAL CONDUCTIVITY METAL INSERT WITH SURFACE MICROSTRUCTURES
A mold insert includes a plurality of microstructures along a surface of the mold insert and a metal alloy, wherein the metal alloy has a thermal conductivity between 1 and 50 W/m-K. and wherein the metal alloy has a modulus of between 100 GPa and 1000 GPa.
B29C 33/38 - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING - Details thereof or accessories therefor characterised by the material or the manufacturing process
B24B 9/14 - Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories 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 work; Arrangements 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
61.
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
A mold insert includes a base, a material of the base being a metal; a body disposed adjacent to the base along a first side of the body, a material of the body having a thermal conductivity between 0.05 and 5 W/m-K; and a working stamp disposed adjacent to the body along a second side of the body, the working stamp including a plurality of microstructures.
B29C 33/42 - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING - Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
An optical lens intended to be worn in front of an eye of a wearer having at least one prescribed refractive power Px. The optical lens includes a refraction area having a refractive power based on the prescribed refractive power Px for the eye of the wearer and including at least the central zone of the optical lens, and a plurality of optical elements having an optical function of not focusing an image on the retina of the eye of the wearer. The optical elements are arranged based at least on the prescribed refractive power Px and the shape of the retina of the wearer.
There is provided a surfacing station for processing of surfaces of optical elements as workpieces, including a processing unit configured to process surfaces of optical elements; a controller unit configured to communicate with a database containing processing protocols, which can be carried out by the surfacing station, and to control operation of the processing unit in accordance with the processing protocols; and an identification tag base configured to communicate with the controller unit and configured to determine identification tags of consumable items used by the surfacing station, the controller unit being configured to enable a surfacing protocol for processing of the optical elements as workpieces in function of an identified consumable item.
B24B 13/06 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor grinding of lenses, the tool or work being controlled by information carrying means, e.g. patterns, punched tapes, magnetic tapes
B24B 9/14 - Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories 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 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
B24B 49/12 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements 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
65.
CALCULATION MODULE, SYSTEM AND COMPUTER-IMPLEMENTED METHOD FOR DETERMINING AT LEAST ONE CAUSE OF A VISUAL FATIGUE OF A PATIENT
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 mining; ICT 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 mining; ICT 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 mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics
66.
METHOD FOR COATING LENSES WITH LENSLETS WITH AN IMPROVED CONTROL ON POWER SHIFT
A method for coating a plurality of optical lenses having at least one main surface at least partly covered with lenslets, the method comprising: —dipping (DIP) at least one first optical lens from the plurality of optical lenses into a coating fluid, —withdrawing (WDW) the at least one first optical lens from the coating fluid at a controlled withdrawal speed, —measuring (MEAS) a thickness of a coating layer deposited on the at least one first optical lens, —determining (ADJ) an adjusted withdrawal speed based on the measured thickness, and —repeating the steps of dipping (DIP), withdrawing (WDW), measuring (MEAS) and determining (ADJ) on at least other optical lenses from the plurality of optical lenses, using the adjusted withdrawal speed during the withdrawing step (WDW).
The invention concerns a method for determining a filter for a visual equipment intended to be placed in front of the eye of a wearer, the filter being able to improve motion sensitivity of the wearer, the method including the following steps: i. subjecting the wearer to a plurality of visible light spectra having different levels of light intensity within the range of wavelengths from 400 to 600 nm; ii. determining a value representative of a dynamic contrast sensitivity of the wearer for each of the plurality of light spectra; iii. selecting at least one light spectrum based on the values improving the dynamic contrast sensitivity; and iv. determining the filter based on the at least one selected light spectrum.
This relates to a method including: detecting, using an optical sensor, an intrinsic optical feature of a lens member to be positioned on a manufacturing apparatus configured to apply an optical lens manufacturing operation to the lens member; and determining, using a processing unit, the position or orientation of the lens member in a framework of the manufacturing apparatus based on the intrinsic optical feature. The method can be used to position and block a lens member, i.e. a lens blank or a finished lens, on any type of manufacturing apparatus used for the manufacture of an optical lens. The intrinsic optical features have not been intentionally etched or engraved onto the lens member for the specific purpose of determining the position or orientation of the lens member.
B24B 13/005 - Blocking means, chucks or the like; Alignment devices
B24B 49/12 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements 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
This relates to a method for manufacturing a lens element including: a refraction area having first curvature; a plurality of optical elements located on at least part of the refraction area, wherein the method includes a step of using an abrasive-filled fluid jet to manufacture the lens element.
B24C 1/08 - Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. by making use of liquid-borne abrasives
B24C 3/32 - Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
B29C 33/38 - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING - Details thereof or accessories therefor characterised by the material or the manufacturing process
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
B33Y 80/00 - Products made by additive manufacturing
70.
A METHOD AND DEVICE FOR PRESSING AGAINST EACH OTHER TWO OPHTHALMIC LENSES IN ORDER TO BUILD AN ELECTROCHROMIC CELL
A device for pressing against each other a first ophthalmic lens having a first face and a second ophthalmic lens having a second face in order to build an electrochromic cell comprising a cavity delimited by the first and second faces, the first and second ophthalmic lenses being superposed and an adhesive substance being applied on at least one of the first and second faces to form the cavity, comprises the first and second ophthalmic lenses and at least one spring adapted to apply a pressure effort on the first and second ophthalmic lenses. It further comprises a programmable electric motor adapted to actuate said at least one spring and to control said pressure effort.
A method for superposing a first ophthalmic lens having a first face and a second ophthalmic lens having a second face in order to build an optical assembly delimited by the first and second faces. The method includes detecting respective positions in space and shapes of the first and second ophthalmic lenses, by using at least one sensor, detecting a first reference point on the first ophthalmic lens and a second reference point on the second ophthalmic lens, based on these respective positions in space and shapes, and modifying the respective positions so as to superpose the first and second reference points.
An assembly includes a first ophthalmic lens having a first internal face and a first external face, a second ophthalmic lens having a second internal face and a second external face, the second ophthalmic lens being superposed on the first ophthalmic lens, a pressing device, adapted to contact one of the first and second ophthalmic lenses in a contact area and to press the first and second ophthalmic lenses against each other in order to build an electrochromic cell including a cavity delimited by the first and second internal faces, an adhesive substance applied on at least one predetermined point of at least one of the first and second internal faces in order to seal the cavity, and a holder provided with a vacuum propagating element enabling the holder to grip one of the first and second external faces.
A lens element adapted to a wearer and intended to be worn in front of an eye of the wearer, the lens element comprising:—a refraction area having a refractive power based on a prescribed refractive power Px for 5 said eye of the wearer and comprising at least a central zone,—a plurality of optical elements having an optical function of not focusing an image on the retina of the eye of the wearer, wherein the optical elements are organized based at least on the prescribed refractive power Px and the functional asymmetries over the visual field of the wearer.
The disclosure concerns a system and methods for detecting a body response to a visual stimulus. The system includes an eyewear delivering a left visual stimulus via a left side of the eyewear and a right visual stimulus via a right side of the eyewear. The system further includes a sensor configured to measure a body posture of a subject's body when the subject is wearing the eyewear. The system further includes a controlling circuit operably coupleable to the eyewear and to the sensor, so that when operably coupled, the controlling circuit: receives measurements of the body posture from the sensor, provides a body posture response information based on the measurements of the body posture, and determines a deviation of the body posture response information to a reference, where the reference is based on the left visual stimulus and the right visual stimulus.
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.
A system and method for determining cardiac or respiratory activity of a subject, including measuring and recording, over at least one period of time, sample measurements relating at least to a kinematic characteristic or a position of an accessory worn by the subject's head and processing those sample measurements for determining the cardiac or respiratory activity.
A manufacturing system carries out a method for additively manufacturing ophthalmic devices, and includes a tank filled with a predetermined material, a single curing device for curing volumes of the predetermined material to harden layers of the ophthalmic devices, a layering device for layering volumes of the predetermined material onto harden layers of the ophthalmic devices. The manufacturing system includes building platforms movable relative to the tank and on which are supported the ophthalmic devices. The number of building platforms is determined by the predetermined material, curing time for the single curing device to cure a volume of the predetermined material, and a layering time for the layering device to provide a volume of the predetermined material to form a subsequent layer for hardening, so the layering device and the single curing device perform respectively curing and layering simultaneously on layers from different ophthalmic devices.
B29C 64/182 - Processes of additive manufacturing specially adapted for manufacturing multiple 3D objects in parallel batches
B29C 64/135 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
78.
EYEWEAR FOR A SUBJECT HAVING AN EYE PROVIDED WITH A MYOPIA CONTROL SOLUTION AND ASSOCIATED METHOD
Eyewear (1) for a subject having an eye provided with a myopia control solution, said myopia control solution inducing a temporal variation of an ocular feature of said eye, said eyewear comprising: —at least one ophthalmic lens (100) having an adjustable optical feature, to be placed in front of said eye of said subject for improving the vision of the subject: —a control unit (200), comprising one or more memories (220) and one or more processors (210), adapted to control said ophthalmic lens by setting said adjustable optical feature to a current value (CV); said one or more memories having in memory data (221) relative to said temporal variation of said ocular feature of said eye, said one or more processors being programmed to determine said current value of said adjustable optical feature based on said data.
An optical article including a substrate, and a holographic waveguide covering at least part of the substrate and including two main surfaces, at least one of them conforming to a surface of the substrate, and at least first and second zones that are configured so that light incoming on one of the first and second zones is at least partially guided towards the other of the first and second zones.
This optical article has a back face on the side of a wearer's eye, a front face opposite to the back face and, on at least one of the front and back faces, an interferential multilayer coating comprising a stack of at least one layer of high refractive index material having a refractive index higher than 1.55 and at least one layer of low refractive index material having a refractive index of 1.55 or less, the refractive indexes being expressed for a wavelength of 550 nm. The optical article is designed in such a manner that it has high reflective properties for low incident angles when viewing the article from its front or back face and antireflective properties for high incident angles when viewing the article from its front or back face.
The invention provides a method for evaluating at least one light protection level of at least one optical product intended to face an eye of a user, the method comprising the following steps: —determining at least one short-term light protection score representative of at least one short-term light protection attribute, —determining at least one long-term light protection score representative of at least one long-term light protection attribute, evaluating at least one light protection level of at least one optical product based on said at least one short-term and at least one long-term protection scores. The invention also provides an optical product comprising a frame, at least one optical system product attached to said frame and intended to face an eye of a user, a data collecting device and a controller configured to perform said evaluating method.
The disclosure relates to a method for coating an optical lens having a main surface at least partly covered with lenslets. The optical lens is dipped in a coating fluid, withdrawn to reach an initial position defined so that said main surface faces towards a first, horizontal, direction, and the coating fluid coating said optical lens is dried. After withdrawing the optical lens and before or while drying the coating fluid, the optical lens is tilted to a final position defined so that said main surface faces upwards towards a final direction having an angle comprised between 80° and 100° with respect to the first direction, the first and final directions defining a vertical plane. Alternately or in combination, while withdrawing said optical lens, part of the coating fluid is removed from the optical lens by sliding said optical lens along a mechanical blade.
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
B05D 1/18 - Processes for applying liquids or other fluent materials performed by dipping
B05D 3/00 - Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
B05D 3/04 - Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
B05D 3/12 - Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
B29L 11/00 - Optical elements, e.g. lenses, prisms
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 like; Alignment devices
B24B 49/12 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
84.
CALIBRATION METHOD OF A PORTABLE ELECTRONIC DEVICE
A calibration method for determining angles between an image acquisition module reference frame and an accelerometer reference frame of a portable electronic device. The method includes receiving a set of images of a known pattern from the image acquisition module of the portable electronic device from different positions, the known pattern being in the same spatial position when acquired, and each image being associated with gravity data corresponding to the measurement of gravity by the accelerometer of the portable electronic device expressed in the accelerometer reference frame, determining the angles between the image acquisition module reference frame and the known pattern reference frame based on the received pictures of the set of pictures, and determining the angles between the image acquisition module reference frame and the accelerometer reference frame based on the determined angles between the image acquisition module reference frame and the known pattern reference frame and assuming the gravity measured by the accelerometer is the same for each image.
Disclosed is a method for manufacturing an optical article, including: providing a base-lens substrate having opposite first and second lens surfaces, and at least one optical element disposed on the second lens surface or embedded within the base-lens substrate, each optical element having a maximum height that is less than or equal to 0.5 mm, and a maximum width that is less than or equal to 2.0 mm, and performing a differentiate coating deposition on the second lens surface, wherein the second lens surface includes at least two areas defined according to their relative position with respect to at least one optical element, and the differentiate coating deposition includes changing at least one parameter of the coating deposition according to the considered area.
Disclosed is an optical lens including a substrate having a front main face and a rear main face, at least one of the main faces including a multilayer antireflection coating having a stack of at least one high refractive index layer and at least one low refractive index layer, wherein the multilayer antireflection coating(s) present on the main face(s) provide(s) the optical lens with an average blue light reflection factor RmB3 within the wavelength range 440-460 nm, which is higher than or equal to 15%, for an angle of incidence ranging from 0° to 15°, and the spectral reflectivity curve of the multilayer antireflection coating has a reflection peak centered at a wavelength in the 340-420 nm range, and the reflection peak has a maximum reflectivity lower than or equal to 50% and exhibits a full width at half maximum higher than 70 nm.
Injection-compression molding apparatus and methods to form a lens in a mold insert by an injecting a polymer into an internal cavity of the mold insert until a pressure of the internal cavity exceeds a predetermined force value, the first mold side being fixed and the second mold side being moveable and configured to apply a force generating the internal cavity pressure. The method includes controlling a first temperature of the first mold side to be in a range of 4 degrees Fahrenheit to 10 degrees Fahrenheit greater than a second temperature of the second mold side and controlling a coining compression distance of the second mold side to be in a range of 0.008 inches to 0.018 inches.
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
B29C 33/02 - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING - Details thereof or accessories therefor with incorporated heating or cooling means
B29C 35/00 - Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
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
B29L 11/00 - Optical elements, e.g. lenses, prisms
88.
METHOD, SYSTEM AND COMPUTER-PROGRAM FOR ESTIMATING REFRACTION OF AN EYE OF AN INDIVIDUAL
A method for estimating refraction of an eye of an individual, including: a) providing a set of N acquired eccentric photorefraction images of the eye, b) setting values for a set of parameters including at least sphere, c) providing a set of N simulated eccentric photorefraction images, d) determining an estimator of a difference between the set of N acquired eccentric photorefraction images and the set of N simulated eccentric photorefraction images, e) performing an optimization using an optimization algorithm so as to optimize the estimator by adjusting values for the set of parameters and iterating steps c) and d), and f) deducing an estimation of at least one refraction parameter of the eye.
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 3/00 - Apparatus for testing the eyes; Instruments for examining the eyes
A61B 3/14 - Arrangements specially adapted for eye photography
An optical article having a base material defining a front and a rear main faces, at least one main face being coated with an interferential multilayer coating comprising a stack of at least one high refractive index layer having a refractive index higher than 1.55 and at least one low refractive index layer having a refractive index of 1.55 or less, the refractive indexes being expressed for a wavelength of 550 nm, such as defining high reflective properties when viewing said article from its front face and antireflective properties when viewing said article from its rear face, called asymmetric mirror, at least one of the layers of the asymmetric mirror being a visible light absorbing sub-stoichiometric inorganic material.
A photography and thermography combining method of obtaining, for a chosen spectacle frame model of a spectacle wearer, at least one fitting parameter to fit an ophthalmic lens into the spectacle frame model. The method includes taking a photograph of the wearer's face with spectacles having the chosen spectacle frame model, taking a thermogram of the wearer's face with the spectacles, identifying the spectacles' contour in the thermogram, overlaying the identified contour or a boxing shape derived from the identified contour onto the photograph, thus obtaining a composite image, and obtaining the at least one fitting parameter from the composite image.
A composite mold for manufacturing a thermoset optical article which is usable as an ophthalmic lens substrate and which comprises a microstructured main surface, to a method for manufacturing such a thermoset optical article, and to a method for obtaining the composite mold. The composite mold (1) comprises:·—a mineral first outer mold part (2) having a first inner surface (2a). and ·—an organic molding film (4) detachably bonded to the first inner surface (2a) and having a microstructured pattern configured to directly form said microstructured main surface after casting the thermosetting material (6) in contact with the organic molding film (4). The organic molding film (4) is hydrophobic at least on said microstructured pattern, and has a thickness of between 10 nm and 5001-1m.
B29C 33/62 - Releasing, lubricating or separating agents based on polymers or oligomers
B29C 39/02 - Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
A mold device includes a mold including a first mold side and a second mold side having a lower thermal conductivity than the first mold side, the first mold side including a first mold insert disposed on a surface of the first mold side, the first mold insert including a plurality of inverted microstructures formed thereon, the plurality of inverted microstructures disposed according to a predetermined layout, wherein a thermal conductivity of the first mold side is 5 to 1,500 W·m−1·K−1 at 25° C., and a thermal conductivity of the second mold side is 0.01 to 2 W·m−1·K−1 at 25° C.
An optometric testing device comprising a first shutter and a second shutter placed in front of two eyes of a patient and configured to present an activated state in which a shutter blocks the propagation of light and a deactivated state in which the shutter allows the propagation of light, a communication unit configured to communicate with a display system in order to send and/or receive a synchronization signal, and a control unit configured to command each shutter as a function of the synchronization signal so that the first shutter and the second shutter change state with a first frequency and a second frequency, wherein the control unit is configured to command each shutter so that the first frequency is different from the second frequency and/or so that a duty cycle of activation of the first shutter is different from a duty cycle of activation of the second shutter.
A61B 3/08 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing binocular or stereoscopic vision, e.g. strabismus
A61B 3/00 - Apparatus for testing the eyes; Instruments for examining the eyes
A61B 3/028 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for determination of refraction, e.g. phoropters
Spectacle lens comprising an arrangement of micro-optical elements, each micro-optical element having an micro-optical axis and a micro-optical face, said micro-optical face having a shape presenting the following characteristics : - a first altitude first order gradient defined as a gradient of a distance from a section of the micro-optical face of the micro-optical element in a first axial plane to a micro- optical reference radial plane perpendicular to the micro-optical axis, and - a second altitude first order gradient defined as a gradient of a distance from a section of the micro-optical face of the micro-optical element in a second axial plane to the micro-optical reference radial plane perpendicular to the micro-optical axis, the first and second altitude first order gradients have each a maximum higher than 1.5 µm/mm in absolute terms and a minimum higher than 1.5 µm/mm in absolute value
Spectacle lens comprising at least - a first zone comprising a plurality of micro-optical elements arranged to cover at least 30 percent of the total area of the first zone, and - a second zone comprising a plurality of micro-optical elements arranged to cover at least 30 percent of the total area of the second zone, wherein, the first zone is different from the second zone, and wherein the micro-optical elements of the first and second zones are arranged such that for a predetermined range of spatial frequencies, values of a modulation transfer function of the first zone and values of a modulation transfer function of the second zone differ by less than 40%.
The invention relates to a method of curing a polythiourethane-based casted substrate, comprising providing a first component A comprising a polythiourethane pre-polymer A1 having isocyanate or isothiocyanate end groups of formula -NCX where X is O or S, providing a second component B comprising a polythiourethane pre-polymer B1 having thiol end groups or comprising at least one polythiol monomer B2, providing a microstructured wafer made of a thermoplastic material having an internal surface and an external surface, wherein the internal surface of the wafer bears a microstructure, mixing together first and second components A and B and filling a molding cavity with the resulting mixture, wherein said molding cavity is defined by the internal surface of the microstructured wafer and at least a portion of a mold part, curing said mixture and obtaining a polythiourethane-based substrate adhering to the microstructured wafer.
C08G 18/38 - Low-molecular-weight compounds having hetero atoms other than oxygen
C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
G02B 1/04 - Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
97.
SEMI-FINISHED OPTICAL ELEMENT FOR MANUFACTURING AN OPHTHALMIC ARTICLE, OPHTHALMIC ARTICLE AND RELATED MANUFACTURING METHOD
A semi-finished optical element for manufacturing an ophthalmic article for vision-correction including at least one blank having a front diopter and a rear diopter, the blank being configured to present a first optical power distribution, one of the diopters being unfinished and the other being finished, an optical component layer including a periodic or pseudo-periodic arrangement of optical wave-front shaping elements that are smaller than 10 μm and configured to control incoming light at least in a part of the visible spectrum and providing a second optical power distribution, wherein the optical component layer is transparent in transmission in the visible wavelength and is disposed on the finished diopter of the blank for cooperating together to achieve a third optical power distribution.
This computer-implemented method for automatically evaluating a relevance of a design of an eyeglasses frame includes: obtaining a predetermined frame having a predetermined design; obtaining information relating to a current representation of the predetermined frame; and evaluating, by at least one processor, a relevance of the predetermined design, from the current representation, according to at least one predetermined relevance criterion and providing, by the at least one processor, a feedback including a result of the evaluating.
A lens element adapted for a wearer and intended to be worn in front of an eye of a wearer in standard viewing conditions, the lens element comprising: - a refraction area comprising: - a far-distance vision zone having a first refractive power, - a near-distance vision zone having a second refractive power, - an intermediate-distance vision zone extending from the far-distance vision zone to the near-distance vision zone, and having a refractive power continuously varying from the first refractive power to the second refractive power, - at least a first set of optical elements having at least a third refractive power, the optical elements being superimposed on at least one of the far distance, intermediate distance, near distance vision zone of the refraction area, characterized in that the combination of the first set of optical elements with the refraction area on which they are superimposed provides an optical function adapted for the wearer so as to focus, in central vision, an image of an object on the retina of the wearer when said wearer gazes at the object through the at least one first set of optical elements.
System for determining a signature of an optical lens machining process, the system being configured to: - determine: • at least two error maps associated respectively with at least two optical lenses machined using the optical lens machining process, • at least one surfacing defect in a first of the at least two error maps, • at least one surfacing defect in a second of the at least two error maps, - remove from the first of the at least two error maps the at least one surfacing defect in the first of the at least two error maps to obtain a first updated error map, - remove from the second of the at least two error maps the at least one surfacing defect in the second of the at least two error maps to obtain a second updated error map, - determine the signature of the optical lens machining process by averaging at least the first updated error map and the second updated error map.
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
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
