Abstract

The invention provides a method 100 for applying a marking 1, 1a, 1b on a surface 2 of a glass mold 3 suitable for manufacturing a marked spectacle lens blank 4. The method 100 comprises applying a pattern 5 of a masking agent 6 on a preselected part of the surface 2 of the glass mold 3 by inkjet-printing.

IPC Classes  ?

• B29D 11/00 - Producing optical elements, e.g. lenses or prisms
• C03C 15/00 - Surface treatment of glass, not in the form of fibres or filaments, by etching
• C03C 17/28 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with organic material

Goods & Services

Chemical coatings for spectacle lenses Spectacle lenses, spectacle lens blanks, spectacle frames, spectacles, sunglasses

Goods & Services

Chemical coatings for spectacle lenses Spectacle lenses, spectacle lens blanks, spectacle frames, spectacles

Goods & Services

Chemical coatings for spectacle lenses. Spectacle lenses, spectacle lens blanks, spectacle frames, spectacles, sunglasses.

Goods & Services

Chemical coatings for spectacle lenses. Spectacle lenses, spectacle lens blanks, spectacle frames, spectacles.

Abstract

A coated lens has a stamping which contains one or more ring-shaped focusing structures. A method for manufacturing such a coated lens is provided in which a coating composition is stamped. The coating composition includes at least one of an epoxide component and a (meth)acrylate component. The ring-shaped focusing structure(s) provide an additional power compared to the central clear zone of the coated lens.

IPC Classes  ?

• C09D 163/00 - Coating compositions based on epoxy resinsCoating compositions based on derivatives of epoxy resins
• B29D 11/00 - Producing optical elements, e.g. lenses or prisms
• B29K 75/00 - Use of polyureas or polyurethanes as moulding material
• C08G 59/32 - Epoxy compounds containing three or more epoxy groups
• C08G 59/40 - Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups characterised by the curing agents used
• G02B 1/11 - Anti-reflection coatings

Abstract

A 3D printing apparatus for manufacturing a workpiece has a first radiation source to carry out a non-linear absorption polymerization and a second radiation source to carry out optical coherence tomography. A first beam path is traversed by the first radiation and a second beam path is traversed by the second radiation. The first and second beam paths are formed completely independently of one another. Further, a 3D printing method for manufacturing a workpiece, another 3D printing apparatus, and methods for analyzing the quality of a raw material of a non-linear absorption polymerization; checking an orientation of a substrate to be printed by non-linear absorption polymerization; determining a spatially resolved degree of conversion of a non-linear absorption polymerization; analyzing a structural sharpness of a structure produced by non-linear absorption polymerization; and for three-dimensional reconstruction of a workpiece manufactured by non-linear absorption polymerization are disclosed.

IPC Classes  ?

• B29C 64/277 - Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
• 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
• B29C 64/268 - Arrangements for irradiation using laser beamsArrangements for irradiation using electron beams [EB]
• B29C 64/386 - Data acquisition or data processing for additive manufacturing
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 30/00 - Apparatus for additive manufacturingDetails thereof or accessories therefor
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing

Abstract

Methods and devices for head image registration are provided that use a plurality of combined 2D and depth images, for example RGBD images, of a head recorded from different positions. Landmark points are determined for each of the combined images. The registration is performed as a coarse registration based on the landmark points followed by a fine registration based on full point clouds. Based on the registration, a head model may be generated.

IPC Classes  ?

• G06T 7/33 - Determination of transform parameters for the alignment of images, i.e. image registration using feature-based methods
• G06T 7/73 - Determining position or orientation of objects or cameras using feature-based methods
• G06T 15/04 - Texture mapping
• G06T 17/20 - Wire-frame description, e.g. polygonalisation or tessellation

Abstract

A spectacle lens has a central clear zone and one or more ring-shaped focusing structures, each ring-shaped focusing structure having a respective width and a surface-based fill factor being larger than 17% and equal to or lower than 70% for a respective width in a range of 0.6 mm to 0.7 mm.

IPC Classes  ?

• G02C 7/02 - LensesLens systems
• G02C 7/06 - LensesLens systems bifocalLensesLens systems multifocal

Abstract

A method of head image capturing is provided, which includes: capturing, with a mobile device, a first image of at least an eye portion of a head of a person, and capturing second images of the head with the mobile device while the head is turning in a first direction relative to the mobile device. The method entails searching for predefined landmarks in each of the second images, and stopping capturing the second images in response to identifying at least a predefined subset of the predefined landmarks in a second image of the plurality of second images. A corresponding mobile device is also provided.

IPC Classes  ?

• G06T 17/00 - 3D modelling for computer graphics
• G06T 7/60 - Analysis of geometric attributes
• G06V 40/16 - Human faces, e.g. facial parts, sketches or expressions
• G06V 40/18 - Eye characteristics, e.g. of the iris

Abstract

A computer-implemented method determines at least one visual parameter of at least one eye of a person. A first visual stimulus and a second visual stimulus are displayed at the same time on a screen effecting a resulting eye movement depending on the at least one visual parameter. The first visual stimulus or the second visual stimulus is a pursuit stimulus. An apparatus for determining a visual parameter of at least one eye of a person is also disclosed. By displaying the at least one first visual stimulus and the at least one second visual stimulus, particularly with at least one differing visual stimulus parameter, at the same time on the screen, a more robust and more exact determination of the visual parameter is achieved compared to a method wherein only one visual stimulus is being displayed.

IPC Classes  ?

• A61B 3/032 - Devices for presenting test symbols or characters, e.g. test chart projectors
• A61B 3/02 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient
• A61B 3/024 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for determining the visual field, e.g. perimeter types
• A61B 3/103 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for determining refraction, e.g. refractometers, skiascopes
• A61B 3/113 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for determining or recording eye movement

Abstract

A computer-implemented method suitable for pose estimation of a face of a person is provided. The method comprises identifying (10) a plurality of landmarks in a combined 2D and depth image of the face, and estimating (11) the pose of the face based on a principal component analysis of the plurality of landmarks. The estimated posed may the be used for determining centration parameters. Corresponding devices and computer programs are also discussed.

IPC Classes  ?

• G02C 13/00 - AssemblingRepairingCleaning
• G06V 40/16 - Human faces, e.g. facial parts, sketches or expressions

Abstract

The invention relates to a device (200) for turning spectacle lenses (101) in a coating apparatus (100), comprising a carrier (105) which is rotatably mounted about a axis of rotation (107) and on which a plurality of lens holders (109) are arranged on concentric wreaths (112) of different diameters in order to hold the spectacle lenses (101) to be coated, wherein the lens holders (109) are mounted such that they can be turned about a pivot axis (110) by means of a magnetic force generated by a magnetic field generator (113). The magnetic field generator (113) is configured such that the magnetic field (117) generated by the magnetic field generator (113) is substantially constant over at least two adjacent wreath (112).

IPC Classes  ?

• C23C 14/50 - Substrate holders

Abstract

The present invention provides a method for applying a pattern (2) on a spectacle lens substrate (1). The method comprises producing a low contact angle surface on a preselected part of a surface of a spectacle lens (4) and providing a hard coating composition (70) and optionally a primer coating composition to the spectacle lens substrate (1).

IPC Classes  ?

• B29D 11/00 - Producing optical elements, e.g. lenses or prisms

Abstract

Provided is a vacuum blocking piece for vacuum blocking a lens blank is provided. The vacuum blocking piece comprising a support element having an upper part and a lower part, wherein the lower part is adapted to engage with a clamping device for clamping the vacuum blocking piece. The vacuum blocking piece further comprises a fluid-permeable blank contacting element, wherein the blank contacting element is fluid-permeable and at least an upper surface of the blank contacting element, which is adapted to contact the lens blank, is made of an elastic material, the blank contacting element further having a lower surface (24) for contacting the upper part of the support element. The vacuum blocking piece is adapted to fixate the lens blank to the upper surface of the blank contacting element by applying a vacuum within the blocking piece to provide a suction through essentially the entire upper surface of the blank contacting element to suck the lens blank to the upper surface of the blank contacting element and to suck the blank contacting element to the upper part of the support element.

IPC Classes  ?

• B24B 13/005 - Blocking means, chucks or the likeAlignment devices

Abstract

A computer-implemented method for determining printing parameter values of an inkjet printing device for printing a pattern on a surface of a spectacle lens substrate is provided. The inkjet printing device includes a printhead with a plurality of printing nozzles. The method includes: grouping the plurality of printing nozzles into at least two printing nozzle groups, and individually determining a printing parameter value for at least one adjustable printing parameter of each printing nozzle group. In addition, a data processing system, a computer program, a non-transitory computer-readable storage medium, a method for inkjet printing, an inkjet printing device, and a spectacle lens substrate with a pattern printed on a surface of the spectacle lens substrate are provided.

IPC Classes  ?

• B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
• B41M 3/00 - Printing processes to produce particular kinds of printed work, e.g. patterns

Abstract

The present invention relates to a method (210) and a device (110) for manufacturing a plurality of optical lenses (112, 112', 112'', 112'''), a method (230) and a device for providing data sets for the plurality of the optical lenses (112, 112', 112'', 112''') to at least one manufacturing machine (124, 124', 124''), and a corresponding computer program. Herein, the method (230) for providing the data sets for the plurality of the optical lenses (112, 112', 112'', 112''') comprises the following method steps: a) generating data sets for a plurality of optical lenses (112, 112', 112'', 112'''), wherein the data set for at least one particular optical lens (112, 112', 112'', 112''') at least comprises: - a first item (216) of information related to an identifier for the at least one particular optical lens (112, 112', 112'', 112'''); and - a second item (218) of information related to at least one of: o at least one manufacturing machine (124, 124', 124') configured for performing at least one manufacturing step at the at least one particular optical lens (112, 112', 112'', 112'''); or o the at least one manufacturing step to be performed at the at least one particular optical lens by using the at least one manufacturing machine (124, 124', 124'); c) transmitting the data set for each optical lens (112, 112', 112'', 112''') to at least one server (130, 130', 130'') configured for operating the at least one manufacturing machine (124, 124', 124') designated for performing the at least one manufacturing step; and b) providing the data set for the at least one particular optical lens (112, 112', 112'', 112''') to be retrieved by the at least one manufacturing machine (124, 124', 124') for manufacturing the at least one particular optical lens (112, 112', 112'', 112''').

IPC Classes  ?

• G06Q 10/063 - Operations research, analysis or management
• G06Q 10/06 - Resources, workflows, human or project managementEnterprise or organisation planningEnterprise or organisation modelling

Abstract

The present invention relates to a method (210) and a device (110) for manufacturing at least one optical lens (112, 112', 112'', 112'''), a method (230) and a device for controlling at least one manufacturing machine (124, 124', 124'') or at least one manufacturing step, and a corresponding computer program. Herein, the method (230) for controlling at least one manufacturing machine (124, 124', 124'') or at least one manufacturing step comprises the following method steps: a) determining at least one status value related to at least one of the manufacturing machine (124, 124', 124') or the manufacturing step; b) comparing the at least one status value with at least one recommended value; c) assigning a difference between the status value and the recommended value into at least two classes according to the difference; and, d) depending on the class, reporting the status value to at least one of the manufacturing machine (124, 124', 124') or a manufacturing executing system (120).

IPC Classes  ?

• B29D 11/00 - Producing optical elements, e.g. lenses or prisms

Abstract

Methods and devices related to spectacle frame recommendation are provided. For configuring a device for frame recommendation, frame data is clustered into a plurality of frame data clusters, and head data is clustered into a plurality of head data clusters. A mapping between the head data clusters and the frame data clusters is performed. For recommendation of a frame to a person, head data of the person is obtained, and a head data cluster is identified based on the head data. Based on the identified head data cluster and the mapping, a frame data cluster is selected which forms the basis for the recommendation.

IPC Classes  ?

• G02C 13/00 - AssemblingRepairingCleaning
• G06Q 30/0601 - Electronic shopping [e-shopping]

Abstract

Provided is a method (300) for applying a marking structure (22) to a casting mold (10) for manufacturing a spectacle lens blank (12). The method (300) comprises generating (302) the marking structure (22) at an inner surface of at least one part of the casting mold (10) by selectively applying a laser radiation to an intended position of the marking structure (22). The method (300) is characterized in that the laser radiation is selectively applied such as to generate the marking structure (22) as one or more protrusions (24, 32) of the inner surface of the at least one part of the casting mold (10) by laser-induced swelling of the casting mold (10) at the intended position of the marking structure (22). At least the inner surface of the casting mold (10) comprises or is made of an inorganic glass. Generating the marking structure (22) as one or more protrusions (24, 32) of the inner surface of the at least one part of the casting mold (10) by laser-induced swelling includes selectively melting at least a part of the casting mold (10) at the intended position of the marking structure (22).

IPC Classes  ?

• B29D 11/00 - Producing optical elements, e.g. lenses or prisms

Abstract

Provided is a method (300) for applying a marking structure (22) to a casting mold (10) for manufacturing a spectacle lens blank (12). The method (300) comprises generating (302) the marking structure (22) at an inner surface of at least one part of the casting mold (10) by selectively applying a laser radiation to an intended position of the marking structure (22). The method (300) is characterized in that the laser radiation is selectively applied such as to generate the marking structure (22) as one or more protrusions (24, 32) of the inner surface of the at least one part of the casting mold (10) by laser-induced swelling of the casting mold (10) at the intended position of the marking structure (22).

IPC Classes  ?

• B29D 11/00 - Producing optical elements, e.g. lenses or prisms

Abstract

A computer-implemented method suitable for gradient spectacle lens evaluation and a corresponding computer are provided. Measurement data indicating at least one of color or transmission of a plurality of measurement points along at least one line across the spectacle lens is received. The method further comprises calculating scalar values representing a difference of the measurement data of adjacent or overlapping measurement point groups of the plurality of measurement points. The spectacle lens is then evaluated based on the scalar values.

IPC Classes  ?

• G01M 11/02 - Testing optical properties
• G01J 3/46 - Measurement of colourColour measuring devices, e.g. colorimeters
• G02C 7/10 - Filters, e.g. for facilitating adaptation of the eyes to the darkSunglasses

Abstract

Provided is a computer-implemented method (11) being configured for generating a 3D representation (5) derived from an original 3D representation (1) of an object, wherein the method comprises generating (S1) 2D images (3) of the original 3D representation (1) comprising a silhouette map (31), and generating (S2) the 3D representation (5) based on the generated silhouette maps (31), characterized in that generating (S1) the 2D images (3) of the original 3D representation (1) comprises determining (S12) positions (2) located around the original 3D representation (1), and generating (S14) a 2D image (3) of the original 3D representation (1) for each of the determined positions (2), wherein a number of the positions (2) depends on dimensions of the original 3D representation (1).

IPC Classes  ?

• G06T 17/20 - Wire-frame description, e.g. polygonalisation or tessellation
• G06T 15/04 - Texture mapping

Abstract

A progressive spectacle lens, a method for its production, and a related computer program are disclosed. The progressive spectacle lens has a progressive surface including a central viewing zone, a lower viewing zone, two peripheral vision zones extending bilaterally from a vertical meridian of the progressive surface, and an upper viewing zone. The central viewing zone has a surface power providing a first refracting power for distance vision and the lower viewing zone has a greater surface power than the central viewing zone providing a second refracting power corresponding to near vision and being connected to the central viewing zone by a first progressing power region. The progressive spectacle lens generates a retarding or arresting effect on myopia progression, especially in myopic juveniles.

IPC Classes  ?

• G02C 7/06 - LensesLens systems bifocalLensesLens systems multifocal
• G02C 7/02 - LensesLens systems

Abstract

A coating device for dip coating an ophthalmic lens is provided. The coating device includes a lacquer basin for receiving a lacquer mixture, which contains a lacquer and a solvent. The coating device has an overflow channel arranged at the lacquer basin for collecting the lacquer mixture overflowing from the lacquer basin, and a tubing system for providing an influx of the lacquer mixture to the lacquer basin, which is connected to the overflow channel for collecting a return flux of the lacquer mixture from the overflow channel to enable circulation of the lacquer mixture through the lacquer basin, the overflow channel, and the tubing system. The coating device includes a supply unit for dosing the lacquer and the solvent for the lacquer mixture, which is connected to the tubing system and configured to feed at least one of the lacquer and the solvent directly into the tubing system.

IPC Classes  ?

• B05C 11/10 - Storage, supply or control of liquid or other fluent materialRecovery of excess liquid or other fluent material
• B05C 3/09 - Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating separate articles
• G02B 1/14 - Protective coatings, e.g. hard coatings

Abstract

A progressive spectacle lens, a method for its production, and a related computer program are disclosed. The progressive spectacle lens has a progressive surface including a central viewing zone, a lower viewing zone, two peripheral vision zones extending bilaterally from a vertical meridian of the progressive surface, and an upper viewing zone. The central viewing zone has a surface power providing a first refracting power for distance vision and the lower viewing zone has a greater surface power than the central viewing zone providing a second refracting power corresponding to near vision and being connected to the central viewing zone by a first progressing power region. The progressive spectacle lens generates a retarding or arresting effect on myopia progression, especially in myopic juveniles.

IPC Classes  ?

• G02C 7/06 - LensesLens systems bifocalLensesLens systems multifocal
• G02C 7/02 - LensesLens systems

Abstract

A spectacle lens contains a composition exhibiting a negative photochromic property and a composition exhibiting a positive photochromic property. Moreover, a method for manufacturing a spectacle lens is disclosed, wherein the method includes the following method steps: S1: providing a spectacle lens substrate; S2: arranging a composition exhibiting a negative photochromic property on a surface of the spectacle lens substrate; and S3: arranging a composition exhibiting a positive photochromic property on a surface of the spectacle lens substrate and/or incorporating a composition exhibiting a positive photochromic property into the spectacle lens substrate.

IPC Classes  ?

• G02C 7/10 - Filters, e.g. for facilitating adaptation of the eyes to the darkSunglasses

Abstract

A computer-implemented method for training of a machine learning model for determining a confidence value during at least one test cycle of a vision testing procedure is disclosed. The confidence value is designated to determine at least one action in at least one subsequent test cycle of the vision testing procedure. Further, a trained machine learning model, a computer program having instructions for training of the machine learning model and a training apparatus are disclosed. Additionally, a computer-implemented method for performing the vision testing procedure on a person, a computer program having instructions for performing the vision testing procedure, a vision test apparatus, and a method for producing a geometrical model of at least one spectacle lens for manufacturing of at least one spectacle lens are disclosed.

IPC Classes  ?

• A61B 3/024 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for determining the visual field, e.g. perimeter types
• A61B 3/028 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuitySubjective types, i.e. testing apparatus requiring the active assistance of the patient for determination of refraction, e.g. phoropters
• A61B 3/06 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing light sensitivity, e.g. adaptationSubjective types, i.e. testing apparatus requiring the active assistance of the patient for testing colour vision
• G06N 3/08 - Learning methods

Abstract

The invention relates to a digital twin of a spectacle lens configured for the purpose of a use of the digital twin for manufacturing the spectacle lens comprising one ring-shaped structure or more ring-shaped structures or one ring-shaped diffusing structure or more ring-shaped diffusing structures and to a computer-implemented method configured for calculating a digital twin of a spectacle lens for the purpose of manufacturing the spectacle lens.

IPC Classes  ?

• G02C 7/02 - LensesLens systems

Abstract

The invention relates to a digital twin of a spectacle lens configured for the purpose of a use of the digital twin for manufacturing the spectacle lens comprising one ring-shaped structure or more ring- shaped structures or one ring-shaped diffusing structure or more ring-shaped diffusing structures and to a computer-implemented method configured for calculating a digital twin of a spectacle lens for the purpose of manufacturing the spectacle lens.

IPC Classes  ?

• G02C 7/02 - LensesLens systems

Abstract

The invention is directed to a method configured designing a digital twin of a coated spectacle lens by means of a computer for the purpose of a use of the digital twin for manufacturing the coated spectacle lens, and to a method for manufacturing a coated spectacle lens.

IPC Classes  ?

• B29D 11/00 - Producing optical elements, e.g. lenses or prisms

Abstract

A computer-implemented method, a computer program, an apparatus, and a remote apparatus for determining at least one visual performance of at least one eye of a person for a plurality of points in a visual field of the person from tracking data by using at least the first spatial location of at least one visual fixation mark and the second spatial location of at least one visual stimulus are disclosed. An attention level of the person is determined by evaluating a time-related difference in reaction times between at least one particular measurement cycle and at least one subsequent measurement cycle. The automated visual performance test can be performed by any person irrespective of being an ophthalmologist or optometry specialist or not, particularly by using a mobile device.

IPC Classes  ?

• 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 eyesInstruments for examining the eyes
• 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

Abstract

A processing device, a computer-implemented method, and a computer program for determining data related to a progression of refractive values of a person; and a system, a computer-implemented method, and a computer program for providing data related to a progression of refractive values are disclosed. The processing device receives data related to a person, including a refractive status of the person; age, gender, and ethnicity of the person; and a risk factor related to the person; and determines data related to the progression of refractive values deploying a machine learning algorithm, wherein the machine learning algorithm includes at least one prediction model for determining a relationship between the data related to the person and the progression of the refractive values of the person. By using the processing device, the system, the computer-implemented methods, and the computer programs the prediction of both myopia onset and myopia progression can be improved.

IPC Classes  ?

• 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 3/028 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuitySubjective types, i.e. testing apparatus requiring the active assistance of the patient for determination of refraction, e.g. phoropters
• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• 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 50/30 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for calculating health indicesICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for individual health risk assessment
• G16H 50/50 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for simulation or modelling of medical disorders

Goods & Services

(1) Spectacle lenses

Abstract

Provided is a computer-implemented method for generating design data for a single vision spectacle lens suitable for the purpose of a use of the design data for manufacturing the spectacle lens having a prescribed power and an edge contour fitted to a predefined spectacle frame. The method comprises providing prescription information regarding the prescribed power for the spectacle lens and geometrical information regarding the predefined spectacle frame. Moreover, the method comprises optimizing a geometrical profile of at least one surface of the spectacle lens. The method further comprises optimizing a spatial variation of a refractive index of the spectacle lens, wherein the optimizing the geometrical profile of at least one surface of the spectacle lens and the optimizing the spatial variation of the refractive index of the spectacle lens are carried out such that an optical power of the spectacle lens corresponds to the prescribed power and an edge thickness of an edge contour of the spectacle lens fitted to the geometrical information regarding the predefined spectacle frame varies by 0,5 mm or less over the edge contour.

IPC Classes  ?

• G02C 7/02 - LensesLens systems

Abstract

Provided is a spectacle lens, comprising a clear region arranged in the center of the spectacle lens having a focal power adjusted to provide emmetropia, and a refractive power region having a refractive power providing a focal power deviating from the focal power of the clear region. The spectacle lens further comprises a ring-shaped diffractive power region having a diffractive add power providing a focal power deviating from the focal power of the clear region, wherein the refractive power region is arranged radially outside of the diffractive power region.

IPC Classes  ?

• G02C 7/02 - LensesLens systems

Abstract

Provided is spectacle lens design data for manufacturing a spectacle lens related to a wearer. The spectacle lens has a refractive power and at least partly a diffractive add power and provides a central region having a first diffractive add power and being adjusted for emmetropia of the wearer. The spectacle lens further provides a peripheral region arranged radially outside of the central region, wherein the peripheral region has a second diffractive add power and is adjusted to provide a focus in at least one of in front of the retina of the wearer or behind the retina of the wearer. The spectacle lens design data is adjusted such that the spectacle lens further exhibits a first blending region arranged between the central region and the peripheral region, wherein the first blending region is adapted to adjust a diffraction efficiency from the first diffractive add power to the second diffractive add power in a radially outward direction. The spectacle lens has a uniform refractive power extending at least over the central region, the peripheral region and the first blending region. The uniform refractive power is adjusted to provide a focus in front of the retina of the wearer. The central region has a negative diffractive add power such that a combination of the uniform refractive power and the negative diffractive add power in the central region is adjusted for emmetropia of the wearer.

IPC Classes  ?

• G02C 7/02 - LensesLens systems

Abstract

A computer-implemented method for determining printing parameter values of an inkjet printing device for printing a pattern on a surface of a spectacle lens substrate is provided. The inkjet printing device includes a printhead with a plurality of printing nozzles. The method includes: grouping the plurality of printing nozzles into at least two printing nozzle groups, and individually determining a printing parameter value for at least one adjustable printing parameter of each printing nozzle group. In addition, a data processing system, a computer program, a non-transitory computer-readable storage medium, a method for inkjet printing, an inkjet printing device, and a spectacle lens substrate with a pattern printed on a surface of the spectacle lens substrate are provided.

IPC Classes  ?

• B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
• B41M 3/00 - Printing processes to produce particular kinds of printed work, e.g. patterns

Abstract

Methods and devices for measuring the vision of a person are provided The method includes determining a distance between a measurement device and the person. The distance is determined by communicating between a first wireless communication interface of the measurement device and a second wireless communication interface of a portable device on the person. Then, the vision measurement is performed based on the distance.

IPC Classes  ?

• A61B 3/032 - Devices for presenting test symbols or characters, e.g. test chart projectors
• G01S 13/74 - Systems using reradiation of radio waves, e.g. secondary radar systemsAnalogous systems

Abstract

A method for applying a surface pattern on a surface of a spectacle lens substrate includes the following steps: providing a spectacle lens substrate having a polymeric lens material, providing a composition containing a swelling agent, applying a pattern of the composition on the surface of the spectacle lens substrate, and allowing for diffusion of the swelling agent from the composition into the lens material. Moreover, a spectacle lens substrate has a polymeric lens material and exhibits a surface pattern on a surface of the spectacle lens substrate. The polymeric lens material includes a swelling agent at positions forming the surface pattern, and a spectacle lens substrate contains a polymeric lens material, wherein the spectacle lens substrate exhibits a pattern of a composition containing a swelling agent applied on a surface of the spectacle lens substrate.

IPC Classes  ?

• G02C 7/02 - LensesLens systems
• B29D 11/00 - Producing optical elements, e.g. lenses or prisms
• G02C 7/06 - LensesLens systems bifocalLensesLens systems multifocal

Abstract

A method for tinting a spectacle lens substrate includes providing a spectacle lens substrate made from a polymeric lens material, providing a composition having a polymeric carrier material, applying a pattern of the composition on a surface of the spectacle lens substrate, and heating the spectacle lens substrate to allow for diffusion of a dye substance between the carrier material and the lens material. Moreover, a composition for in-substrate tinting of a polymeric spectacle lens substrate and a spectacle lens substrate having a polymeric lens material which exhibits a pattern of a composition having a polymeric carrier material applied on a surface of the spectacle lens substrate are presented.

IPC Classes  ?

• B29D 11/00 - Producing optical elements, e.g. lenses or prisms
• B29C 35/02 - Heating or curing, e.g. crosslinking or vulcanising
• G02C 7/10 - Filters, e.g. for facilitating adaptation of the eyes to the darkSunglasses
• B29K 23/00 - Use of polyalkenes as moulding material
• B29K 91/00 - Use of waxes as moulding material
• B29K 105/00 - Condition, form or state of moulded material

Abstract

The present invention relates to a method, an apparatus, and a computer program product configured to determine at least one value (328) for an ocular aberration of at least one eye (112) of a user (114) as well as to a related method configured to produce at least one spectacle lens for the at least one eye of the user. Herein, the method comprises the steps: a) providing input data (314), the input data (314) comprising: information (118, 126) comprising an ocular aberration and at least one geometric and optical property of at least one eye (112) of a user (114) at a point in time (316); and further information (128) comprising at least one geometric and optical property of the at least one eye (112) of the user (113) at a previous point in time (320), and b) generating output data (326), the output data (326) comprising the at least one value (328) for the ocular aberration of the at least one eye (112) of the user (114), wherein the output data (326) is generated by using the information (118, 126) and the further information (128), wherein the information (118, 126) is captured in a non-cycloplegic manner (318); and the further information (128) is captured under cycloplegia (322) of the at least one eye (112) of the user (114).

IPC Classes  ?

• A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
• A61B 3/028 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuitySubjective types, i.e. testing apparatus requiring the active assistance of the patient for determination of refraction, e.g. phoropters
• A61B 3/06 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing light sensitivity, e.g. adaptationSubjective types, i.e. testing apparatus requiring the active assistance of the patient for testing colour vision
• A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
• A61B 3/107 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for determining the shape or measuring the curvature of the cornea
• A61B 3/11 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for measuring interpupillary distance or diameter of pupils

Abstract

The present invention relates to a computer-implemented method '(200) for determining at least one astigmatism parameter of at least one eye (302) of a person (300), the method comprising the following steps: a) generating input data (202) configured to comprise at least one position of the at least one eye (302) of the person (300) relative to the measurement device (110); wherein the at least one position of the at least one eye (302) of the person (300) is determined, in a step iii) (208), by using the measurement device (110); b) generating outcome data (214) configured to comprise at least one astigmatism parameter of the eye (302) of the person (300); wherein the at least one astigmatism parameter of the eye (302) of the person (300) is determined, in a step iv) (216), by comparing at least one known feature (118) to at least one reflected feature (122) comprised in the at least one recorded image of the at least one reflected feature in the eye (302) of the person (300), wherein the position of the at least one eye (302) of the person (300) is considered when the at least one astigmatism parameter of the eye (302) of the person (300) is determined. The present invention further relates to a computer program, a field device (400), a remote device (402), a determining device (100), a data carrier signal (406), a method for producing a geometrical model of at least one spectacle lens (500), a method for producing at least one spectacle lens (502), and a use of an external lens (130). The present invention provides a fast, easy, versatile, reliable, easy accessible and accurate approach for determining at least one astigmatism parameter of an eye (302) of a person (300).

IPC Classes  ?

• A61B 3/032 - Devices for presenting test symbols or characters, e.g. test chart projectors
• A61B 3/036 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuitySubjective types, i.e. testing apparatus requiring the active assistance of the patient for determination of refraction, e.g. phoropters for testing astigmatism
• A61B 3/15 - Arrangements specially adapted for eye photography with means for aligning, spacing or blocking spurious reflection
• 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 3/107 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for determining the shape or measuring the curvature of the cornea

Abstract

The invention relates to a computer-implemented method being configured for calculating a digital twin of a spectacle lens for the purpose of a use of the digital twin for a manufacture of the spectacle lens, said digital twin having a predefined power distribution and comprising a layer stack with a plurality of individual layers each having a non-uniform layer thickness with a spatial variation and a uniform refractive index, the method being characterized in the step of determining the spatial variation of the layer thicknesses of said individual layers to achieve said predefined power distribution by a spatial control of optical path lengths.

IPC Classes  ?

• G02C 7/02 - LensesLens systems
• B33Y 80/00 - Products made by additive manufacturing
• B29C 64/112 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using individual droplets, e.g. from jetting heads
• B29C 64/386 - Data acquisition or data processing for additive manufacturing
• B29D 11/00 - Producing optical elements, e.g. lenses or prisms

Abstract

An inkjet printing method of tinting a spectacle lens substrate comprising the steps: (a) providing a spectacle lens substrate having a front surface and a back surface, wherein said spectacle lens substrate can be precoated, (b) printing droplets of at least a first inkjet printing ink ( PI 1) to form at least a first layer (LI) and droplets of at least a second inkjet printing ink (Pt2) to form at least a second layer (L2) on at least one of said front surface and back surface, wherein at least one of said at least first inkjet printing ink (Ptl) and said at least second inkjet printing ink (PI2) is colored, said at least first layer (LI) and said at least second layer (L2), each covering fully or partially at least one of said front surface and back surface, forming a stack which covers at least one of said front surface and back surface, wherein said at least first layer (LI) and said at least second layer (L2) are at least partially overlapping in said stack, (c) curing said at least first layer (LI) and said at least second layer (L2) together in a combined curing step. And, a tinted spectacle lens having a front surface and a back surface wherein said tinted spectacle lens comprises a color design on at least one of said front surface and back surface, said color design is selected from the group consisting of a non-linear color gradient, contoured di- or polychromatic pattern, contoured di- or polychromatic figure, di- or polychromatic alphabetic code, di- or polychromatic numerical code, di- or polychromatic alphanumerical code, and combinations thereof.

IPC Classes  ?

• B29D 11/00 - Producing optical elements, e.g. lenses or prisms

Abstract

The present invention relates to a computer-implemented method (200) for determining at least one refractive error of an eye (302) of a person (300), the method comprising the following steps: a) generating input data (202) configured to comprise at least one distance (110) between the eye (302) of the person (300) and at least one visual stimulus (108) displayed to the eye (302) of the person (300) and b) generating outcome data (204) configured to comprise at least one refractive error of the eye (302) of the person (300), wherein the at least one refractive error of the eye (302) of the person (300) is determined by evaluating the input data, wherein a position of the entrance pupil (304) of the eye (302) of the person (300) is considered when the at least one refractive error of the eye (302) of the person (300) is determined. The present invention further relates to a computer program, a field device (400), a remote device (402), a determining device (100), a data carrier signal (406), a method for producing a geometrical model of at least one spectacle lens and a method for producing at least one spectacle lens. The present invention provides a fast, easy, versatile, reliable and accurate approach for determining at least one refractive error of an eye (302) of a person (300).

IPC Classes  ?

• A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
• A61B 3/032 - Devices for presenting test symbols or characters, e.g. test chart projectors
• A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions

Abstract

A data set stored on a computer-readable medium or being embodied in the form of a computer-readable data signal comprising a digital twin of a spectacle lens (300) being configured for the purpose of use for manufacturing said spectacle lens (300), said spectacle lens (300) comprising: - a clear vision zone (309); - a plurality of compact defocusing structures (312). The plurality of compact defocusing structures (312) being arranged along a structure line (305) without any point and axis symmetry and corresponding to a predefined contour line along which a visual performance indicator has a constant value, said visual performance indicator characterizing a visual performance of said spectacle lens (300) within said clear vision zone (309) for said wearer wearing said spectacle lens (300). Alternatively, plurality of compact defocusing structures (312) being arranged along a structure line (305) having a predefined constant distance to said predefined contour line along which a visual performance indicator has a constant value.

IPC Classes  ?

• G02C 7/02 - LensesLens systems

Abstract

The present invention relates to a device for verification of a state of calibration and/or functionality of an ophthalmological measurement device (306) for biometric data of an eye. The present invention further relates to an ophthalmological measurement system (300), comprising a device for verification of a state of calibration and/or functionality (302) of an ophthalmological measurement device (306) for biometric data of an eye and, wherein the device for verification (302) is configured to be directly mountable on a part (330) comprising a head rest (308) of the ophthalmological measurement device (306).

IPC Classes  ?

• A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes

Abstract

A method, a device, and a computer program product for determining a refractive error of an eye of a user are disclosed, as well as a method for producing a spectacle lens. The method for determining includes: displaying an image with a spatial modulation to the user; optionally, recording a reaction of the user to a variation of the spatial modulation over time; detecting a point in time at which a perception threshold of the user is reached; and determining the refractive error of the user from the spatial modulation, wherein the image contains a source image with several picture elements, wherein values for an image parameter are assigned to the picture elements, and wherein the spatial modulation is generated such that the values of the image parameter determine the values of a modulation parameter of the spatial modulation in the image.

IPC Classes  ?

• A61B 3/032 - Devices for presenting test symbols or characters, e.g. test chart projectors
• A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
• 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
• G02C 7/02 - LensesLens systems
• G06T 3/40 - Scaling of whole images or parts thereof, e.g. expanding or contracting
• G06T 3/60 - Rotation of whole images or parts thereof

Abstract

The invention is directed to a method of generating a topographic structure or a plurality of topographic structures developed out of or within a surface of an uncoated or a plastic substrate coated with a hard coat comprising the following steps: (a) providing a plastic substrate based on a plastic material having a front surface and a back surface, said plastic substrate being an uncoated plastic substrate or a plastic substrate coated with a hard coat, said hard coat covering at least one of said front surface and back surface; (b) depositing on at least one of said front surface and back surface droplet of a structuring ink; (c) irradiating said droplets of structuring ink deposited on at least one of said front surface and back surface; (d) removing said deposited droplets after having been irradiated and providing a topographic structure or a plurality of topographic structures developed out of or within said at least one of said front surface and back surface of said uncoated plastic substrate or plastic substrate coated with a hard coat. The invention also directed to a plastic substrate based on a plastic material having a front surface and a back surface, said plastic substrate being an uncoated plastic substrate or a plastic substrate coated with a hard coat, said hard coat covering at least one of said front surface and back surface, wherein a topographic structure or plurality of topographic structures is/are developed out of or within a surface of said plastic material of the uncoated plastic substrate or developed out of or within said hard coat of said coated plastic substrate.

IPC Classes  ?

• B29D 11/00 - Producing optical elements, e.g. lenses or prisms

Abstract

The present invention relates to a computer-implemented method for operating an optometry device, comprising the following steps: - generating a first data set, said first data set comprising information about a distance of a user of the optometry device to an object, - tuning a tunable lens of the optometry device based on the distance of a user of the optometry device to the object based on the first data set. The inventive computer-implemented method is characterized in that the first data set is generated by using a LiDAR sensor, said LiDAR sensor is measuring the distance of a user of the optometry device to the object by evaluating a scene represented by the first data set.

IPC Classes  ?

• 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 3/028 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuitySubjective types, i.e. testing apparatus requiring the active assistance of the patient for determination of refraction, e.g. phoropters

Abstract

A computer-implemented method of generating data for calibrating optical coating apparatuses for applying optical coatings to surfaces of substrates is disclosed. The method includes measuring spectral data of a test coating applied by an optical coating apparatus at a first location; sending a coating data file containing the spectral data to a second location; comparing the measured spectral data of the test coating to target specification data for the test coating; and determining correction factors for correcting deviations to the target specification data for the optical coating apparatus based on the comparison between the measured spectral data and the target specification data; and receiving a target data file containing the correction factors at the first location and calibrating the optical coating apparatus by adjusting an operation parameter of the optical coating apparatus based on the correction factors to correct for deviations from the target specification data.

IPC Classes  ?

• C23C 14/54 - Controlling or regulating the coating process
• C23C 16/52 - Controlling or regulating the coating process

Goods & Services

Chemical coatings for spectacle lenses Spectacle lenses, spectacle frames and sunglasses

Abstract

The present invention relates to a computer-implemented method for training (500) of a machine learning model (200) for determining a confidence value during at least one test cycle (204) of a vision testing procedure, wherein the confidence value is designated for determining at least one action in at least one subsequent test cycle (204) of the vision testing procedure. The present invention further relates to a trained machine learning model (200), a computer program comprising instructions for training of the machine learning model (200) and a training apparatus (600). Additionally the present invention relates to a computer-implemented method for performing the vision testing (202) procedure on a person (300), a computer program comprising instructions for performing the vision testing procedure, a vision test apparatus (100) and a method for producing a geometrical model of at least one spectacle lens for manufacturing of at least one spectacle lens (704).

IPC Classes  ?

• G16H 50/20 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for computer-aided diagnosis, e.g. based on medical expert systems
• G02C 7/02 - LensesLens systems
• G06N 3/045 - Combinations of networks

Abstract

A computer-implemented method (100) for facilitating an identification of an optical mark (410) in an image (400) of a spectacle lens (402) is provided. The method (100) is characterized in that it comprises a step of generating (104) enhancement information based on the image (400) of the spectacle lens (402), wherein the enhancement information is configured to enhance a detectability of the optical mark (410) in an automated identification process when an impairing structure (406) impairs the detectability of the optical mark (410) in the image (400). Furthermore, the method (100) comprises a step of providing (106) the generated enhancement information to the automated identification process for identifying the optical mark (410) using the enhancement information.

IPC Classes  ?

• B24B 13/005 - Blocking means, chucks or the likeAlignment devices
• G02C 7/02 - LensesLens systems
• G06K 7/14 - Methods or arrangements for sensing record carriers by electromagnetic radiation, e.g. optical sensingMethods or arrangements for sensing record carriers by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
• G06T 7/00 - Image analysis
• G06V 10/00 - Arrangements for image or video recognition or understanding

Abstract

A spectacle lens which has permanent markings is mounted on a mounting, in particular a suction mounting. The apparent location of the permanent markings is detected on the spectacle lens with a detection device. Additionally, the spectacle lens is illuminated eccentrically with respect to an optical axis of the detection device using eccentric light sources. Reflections from the lights sources on the spectacle lens are likewise detected. On the basis of the detected reflections and the apparent location of the permanent markings, the position and/or orientation of the mounted spectacle lens are determined.

IPC Classes  ?

• G02C 13/00 - AssemblingRepairingCleaning
• G01M 11/02 - Testing optical properties

Abstract

Methods for tinting or decoloring a lens include inserting a lens into a reception unit of a lens holder, providing an immersion bath containing a fluid, immersing the lens holder into the fluid; and rotating the lens holder around a rotation axis to a predetermined maximum rotation angle, wherein the rotation axis is located outside the lens and generally perpendicular to a plane of the lens. A lens obtainable by such methods, a lens having a tint or a decolorization, a lens holder, and a tinting device allowing for more complex (gradient) tints are also disclosed. The present disclosure further relates to a corresponding computer program.

IPC Classes  ?

• B29D 11/00 - Producing optical elements, e.g. lenses or prisms

Abstract

A progressive spectacle lens, a method for its production, and a related computer program are disclosed. The progressive spectacle lens has a progressive surface including a central viewing zone, a lower viewing zone, two peripheral vision zones extending bilaterally from a vertical meridian of the progressive surface, and an upper viewing zone. The central viewing zone has a surface power providing a first refracting power for distance vision and the lower viewing zone has a greater surface power than the central viewing zone providing a second refracting power corresponding to near vision and being connected to the central viewing zone by a first progressing power region. The progressive spectacle lens generates a retarding or arresting effect on myopia progression, especially in myopic juveniles.

IPC Classes  ?

• G02C 7/06 - LensesLens systems bifocalLensesLens systems multifocal
• G02C 7/02 - LensesLens systems

Abstract

The present invention is directed to an ophthalmological apparatus (1) comprising a chin rest (2), characterized in that the chin rest (2) is configured to be releasably mountable on the apparatus (1) via magnetic attachment. Further, the present invention also relates to a chin rest (2) comprising a magnetic element (4).

IPC Classes  ?

• A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes

Abstract

Methods for tinting or decoloring a lens include inserting a lens into a reception unit of a lens holder, providing an immersion bath containing a fluid, immersing the lens holder into the fluid; and rotating the lens holder around a rotation axis to a predetermined maximum rotation angle, wherein the rotation axis is located outside the lens and generally perpendicular to a plane of the lens. A lens obtainable by such methods, a lens having a tint or a decolorization, a lens holder, and a tinting device allowing for more complex (gradient) tints are also disclosed. The present disclosure further relates to a corresponding computer program.

IPC Classes  ?

• B29D 11/00 - Producing optical elements, e.g. lenses or prisms

Abstract

m+1m+1m+1n+1n+1n+1mmmnnnm+1m+1m+1n+1n+1n+1mmmnnnn position of an adjacent layer of said layer stack.

IPC Classes  ?

• B29C 64/112 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using individual droplets, e.g. from jetting heads
• B29C 64/386 - Data acquisition or data processing for additive manufacturing
• B29D 11/00 - Producing optical elements, e.g. lenses or prisms
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 50/00 - Data acquisition or data processing for additive manufacturing
• G02C 7/02 - LensesLens systems

Abstract

A testing device for detecting defects of transparent test specimens, in particular of ophthalmological lenses, has an illumination device for transilluminating test specimens to be examined and with an image acquisition device for imaging the test specimen transilluminated by the illumination device. The illumination device includes a plurality of linearly adjustable light sources for generating a stripe pattern. To capture the stripe pattern, the acquisition duration of the image acquisition device can be adjusted in such a way that the light emitted by each of the light sources is detected as a light stripe. Further, the disclosure relates to a testing method for detecting a defect of a transparent specimen.

IPC Classes  ?

• G01N 21/00 - Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
• G01N 21/958 - Inspecting transparent materials
• G01N 21/88 - Investigating the presence of flaws, defects or contamination

Abstract

Provided are a method and a device (10) for generating a set of virtual representation data (100) of a spectacle lens (12). The method comprises providing a set of scanning data of a profile of an edge surface (12c) of the spectacle lens (12) obtained by scanning the edge surface (12c) of the spectacle lens (12) using an optical scanner (24). The method further comprises providing a set of imaging data obtained by taking at least one image of the spectacle lens (12) using a camera (20) facing a back surface (12b) or a front surface (12a) of the spectacle lens (12). The method further includes generating a set of virtual representation data (100) of the spectacle lens (12) based on the set of scanning data and the set of imaging data. Further a set of virtual representation data (100) is provided, its use for characterizing an accuracy of fit of the spectacle lens and/or for monitoring a manufacturing process, as well as a method for manufacturing a spectacle lens (12). The at least one optical scanner (24) is a laser scanner for scanning a height profile of the edge surface (12c).

IPC Classes  ?

• G02C 13/00 - AssemblingRepairingCleaning
• G01M 11/02 - Testing optical properties
• B29D 11/00 - Producing optical elements, e.g. lenses or prisms
• G01B 11/24 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
• G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object

Abstract

A method of providing refractive microstructures (5) on a surface (4) of a spectacle lens body (3) is provided. The refractive microstructures (5') are formed on the surface (4) by an additive manufacturing process, in which the refractive microstructures (5) are formed by applying a at least one curable material (6) and curing the at least one curable material (6). The additive manufacturing process includes - forming a layer (1) of the at least one first liquid or viscous curable material (6) where for forming the refractive microstructures (5) an additional amount of the at least one first curable material (6) or an amount of at least one second liquid or viscous curable material (16) is applied at locations at which the refractive microstructures (5) shall be formed before curing or pinning the at least one first curable material (6); and - curing or pinning the layer (1) of the at least one first curable material (6) with the additional amount of the at least one first curable material (6) or with the amount of the at least one second curable material (16) before protrusions formed by the additional amount of the at least one first curable material (6) or the amount of the at least one second curable material (16) are levelled out by material transport processes within the liquid or viscous material in the layer (1) of the at least one curable material (6). In addition, a spectacle lens with refractive microstructures (5) is provided. The spectacle lens includes a spectacle lens body (3) with a surface (4) which is provided with the refractive microstructures (5). The refractive microstructures (5) are at least partly merged with a layer (1) present on the surface (4) and at least partly have refractive properties due to a gradient in the refractive index.

IPC Classes  ?

• B29D 11/00 - Producing optical elements, e.g. lenses or prisms

Abstract

A computer-implemented method, a computer program, and a device for determining a visual performance of an eye of a person are disclosed. The method includes displaying to at least one eye of a person a visual stimulus configured to elicit at least one type of eye movement in the at least one eye of the person with at least one screen; tracking the at least one type of eye movements in the at least one eye of the person with at least one eye tracker; determining the visual performance of the at least one eye of the person by using at least one first piece of information about the at least one visual stimulus and at least one second piece of information about an occurrence of the at least one type of eye movements in the at least one eye of the person with at least one processing unit.

IPC Classes  ?

• 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

Abstract

A processing device allows processing standard or non-standard spectacle lens prescription documents drafted in a plurality of fashions and provided by eye care professionals, such as opticians, or by end consumers in one of a plurality of languages to determine the data related to the refractive values in a reliable, scalable, and automated fashion. Data related to refractive values is determined from the spectacle lens prescription document. A processing device for determining data related to the refractive values determine at least one pattern containing the data related to the refractive values from an electronic representation of the at least one spectacle lens prescription document, and determines text containing the data related to the refractive values from the electronic representation of the at least one spectacle lens prescription document.

IPC Classes  ?

• G06V 30/414 - Extracting the geometrical structure, e.g. layout treeBlock segmentation, e.g. bounding boxes for graphics or text
• G06V 30/19 - Recognition using electronic means
• G06V 30/413 - Classification of content, e.g. text, photographs or tables

Abstract

A method for determining the reflectance behavior of a surface of an object includes: providing a plurality of images of the object which differ in terms of a recording direction and/or in terms of an illumination direction during the recording; creating data sets with entries which each describe a reflectance value derived from the images and an assigned recording direction and an assigned illumination direction, with each data set being assigned to a point on the surface of the object; and determining missing entries in the data sets on the basis of entries of already created data sets.

IPC Classes  ?

• G06V 10/60 - Extraction of image or video features relating to illumination properties, e.g. using a reflectance or lighting model
• G06T 7/62 - Analysis of geometric attributes of area, perimeter, diameter or volume
• G06T 7/80 - Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
• G06V 10/44 - Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersectionsConnectivity analysis, e.g. of connected components
• G06V 10/74 - Image or video pattern matchingProximity measures in feature spaces

Abstract

A method for tinting a spectacle lens includes selectively performing a surface treatment onto a preselected part of a surface of a spectacle lens and providing a tinting solution to the spectacle lens. Further, a lens holder for tinting a spectacle lens is provided, which comprises a reception unit suitable for holding the spectacle lens in a predefined position and a masking unit suitable for masking a part of a surface of the spectacle lens when held by the reception unit in a predefined position.

IPC Classes  ?

• G02C 7/10 - Filters, e.g. for facilitating adaptation of the eyes to the darkSunglasses

Abstract

Apparatuses and methods for determining a refractive error of an eye are disclosed. A series of images of light coming from an eye are captured with varying optical powers, and the refractive error is then calculated based directly on the series of images used as approximate point spread functions. The calculation includes determining a modulation transfer area as a function of meridian angle and optical power in an angle range from 0° to 180° based on the series of images, and to calculate the refractive error based on the modulation transfer area as a function of angle and optical power.

IPC Classes  ?

• 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 eyesInstruments for examining the eyes
• A61B 3/14 - Arrangements specially adapted for eye photography

Abstract

The invention is directed to a spectacle lens (100 to 400) comprising a ring-shaped structure, said ring-shaped structure (110, 210, 310, 410) surrounding a ring-shaped clear zone (102, 202, 302, 402) and said ring-shaped structure (110, 210, 310, 410, 810) being selected from one of: (i) one focusing structure (105, 305, 405), (ii) a plurality of focusing structures (103, 203, 304, 404), - said ring-shaped clear zone (102, 202, 302, 402) surrounding a central zone (101, 201, 301, 401), - said central zone (101, 201, 301, 401) comprising a structure being selected from one of (a) one focusing structure (105, 305, 405), (b) a plurality of focusing structures (208).

IPC Classes  ?

• G02C 7/02 - LensesLens systems

Abstract

A spectacle lens design includes a first zone which has a focal power that provides a focused image on the fovea and a given a height and width. A second zone at least partly surrounds the first zone and contains at least one of the following: (i) focusing structures providing a focal power resulting in a myopic defocus or (ii) diffusing structures, such as scattering centers, leading to a diffusion of light passing the second zone. The first zone is curved to follow the converging line of sight of the wearer upon reading and contains a nasal segment, a temporal segment, and a central segment located between the nasal segment and the temporal segment The nasal segment and the temporal segment are shifted downwards with respect to the central segment.

IPC Classes  ?

• G02C 7/02 - LensesLens systems
• G02C 7/16 - Shades, shieldsObturators, e.g. with pinhole, with slot

Abstract

A spectacle lens design includes an aperture and at least two ring-shaped focusing structures surrounding the aperture. The aperture has a dioptric power, and the ring-shaped focusing structures surrounding the aperture provide an additional power relative to the dioptric power of the aperture. A ring-shaped diffuser is arranged between neighboring ring-shaped focusing structures. Neighboring ring-shaped focusing structures can adjoin each other with a ring-shaped contact line between them forming the ring-shaped diffuser. Neighboring ring-shaped focusing structures can also be arranged at a distance to each other and at least one of the ring-shaped focusing structures provides a ring shaped focal line. Neighboring ring-shaped focusing structures can also be arranged at a distance to each other and at least one of the ring-shaped focusing structures consists of lenslets that adjoin each other so as to form a ring of lenslets and provides a plurality of foci along a ring shaped line.

IPC Classes  ?

• G02C 7/02 - LensesLens systems
• B29D 11/00 - Producing optical elements, e.g. lenses or prisms

Abstract

A method for applying an optical mark to a spectacle lens mounted in a spectacle frame includes determining an intended position of the optical mark at the spectacle lens based on the spectacle frame. The method further includes taking an image of at least a part of the spectacle frame and arranging the spectacle frame in a marking device having a marking appliance and adjusting the relative position of the spectacle frame and the marking appliance such that an actuation axis of the marking appliance intersects with the spectacle lens at the intended position of the optical mark. Additionally, the optical mark to the spectacle lens is applied at the intended position by using the marking appliance. The use of a spectacle frame as a positioning reference for an optical mark and a marking device are also disclosed.

IPC Classes  ?

• G02C 7/02 - LensesLens systems
• B24B 13/005 - Blocking means, chucks or the likeAlignment devices
• B41M 5/24 - Ablative recording, e.g. by burning marksSpark recording
• B41M 3/00 - Printing processes to produce particular kinds of printed work, e.g. patterns
• G02B 27/32 - Fiducial marks or measuring scales within the optical system

Abstract

A method of manufacturing a spectacle lens having a lens substrate a lens substrate and at least one coating is disclosed. The method includes at least the following steps in the given order: providing a lens substrate having an uncoated or pre-coated front surface and an uncoated or pre-coated back surface, coating at least one surface with at least one coating, the surface of the at least one coating being modifiable when contacted with at least one medium being able to modify the surface of the coating, completely or partially contacting the surface of the coating with the at least one medium, applying at least one single electromagnetic pulse to at least one of the surfaces of the spectacle lens having the lens substrate, the coating and the medium and obtaining the spectacle lens having the at least one coating with a completely or partially modified surface.

IPC Classes  ?

• G02C 7/02 - LensesLens systems
• G02B 1/14 - Protective coatings, e.g. hard coatings
• G02B 1/12 - Optical coatings produced by application to, or surface treatment of, optical elements by surface treatment, e.g. by irradiation
• G02B 1/11 - Anti-reflection coatings

Abstract

A lacquer basin (12) for a dip coating device (10) is provided. The lacquer basin (12) comprises an inlet section (12a) arranged at a lower end of the lacquer basin (12) and adapted to receive a stream of a lacquer mixture (14) injected into the lacquer basin (12). The lacquer basin (12) further comprises a process section (12b) adjoining the inlet section (12a) at an upper end of the inlet section (12a), wherein the process section (12b) is adapted to provide a process volume for dip coating one or more objects in the stream of the lacquer mixture (14). The lacquer basin (12) is characterized in that it comprises a diversion element (22) arranged at or near a transition from the inlet section (12a) to the process section (12b) and adapted to divert at least a part of the stream of the lacquer mixture (14) such as to reduce or avoid turbulences of the stream of lacquer mixture (14) in the process section (12b). The lacquer basin (12) is characterized in that the diversion element (22) comprises two or more barrier layers (24) arranged at different levels spaced apart from each other, wherein each of the barrier layers (24) has multiple recesses (28) and intermittently covers the cross sectional area of the lacquer basin (12)

IPC Classes  ?

• B05C 3/109 - Passing liquids or other fluent materials into or through chambers containing stationary articles
• B05D 1/18 - Processes for applying liquids or other fluent materials performed by dipping

Abstract

A spectacle lens design includes an aperture and at least two ring-shaped focusing structures surrounding the aperture. The aperture has a dioptric power, and the ring-shaped focusing structures surrounding the aperture provide an additional power relative to the dioptric power of the aperture. A ring-shaped diffuser is arranged between neighboring ring-shaped focusing structures. Neighboring ring-shaped focusing structures can adjoin each other with a ring-shaped contact line between them forming the ring-shaped diffuser. Neighboring ring-shaped focusing structures can also be arranged at a distance to each other and at least one of the ring-shaped focusing structures provides a ring shaped focal line. Neighboring ring-shaped focusing structures can also be arranged at a distance to each other and at least one of the ring-shaped focusing structures consists of lenslets that adjoin each other so as to form a ring of lenslets and provides a plurality of foci along a ring shaped line.

IPC Classes  ?

• G02C 7/02 - LensesLens systems
• B29D 11/00 - Producing optical elements, e.g. lenses or prisms

Abstract

A coated lens comprising a stamping is provided. A method for manufacturing a coated lens comprising a stamping is provided.

IPC Classes  ?

• G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics

Abstract

A spectacle lens design includes a first zone which has a focal power that provides a focused image on the fovea and a given a height and width. A second zone at least partly surrounds the first zone and contains at least one of the following: (i) focusing structures providing a focal power resulting in a myopic defocus or (ii) diffusing structures, such as scattering centers, leading to a diffusion of light passing the second zone. The first zone is curved to follow the converging line of sight of the wearer upon reading and contains a nasal segment, a temporal segment, and a central segment located between the nasal segment and the temporal segment The nasal segment and the temporal segment are shifted downwards with respect to the central segment.

IPC Classes  ?

• G02C 7/02 - LensesLens systems
• G02C 7/16 - Shades, shieldsObturators, e.g. with pinhole, with slot

Abstract

A spectacle lens having at least one antibacterial and/or antiviral coating and a method for manufacturing the same are disclosed. The spectacle lens includes (i) an anti-reflective coating or (ii) a mirror coating. The (i) anti-reflective coating or the (ii) mirror coating are made from a stack or a plurality of stack layers. The stack has an outermost stack layer containing silver (Ag). The outermost stack layer further contains a SiO2-matrix having a plurality of separated silver (Ag) atoms and/or a plurality of silver (Ag) clusters. Each of the silver (Ag) clusters has a maximum expansion of less than 20 nm.

IPC Classes  ?

• G02B 1/18 - Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films
• G02C 7/02 - LensesLens systems
• G02B 1/11 - Anti-reflection coatings
• C03C 17/36 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
• C03C 17/00 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating

Abstract

The present invention provides a method for tinting a spectacle lens (60). The method comprises selectively performing a surface treatment onto a preselected part of a surface of a spectacle lens (62) and providing a tinting solution (70) to the spectacle lens. Further, a lens holder (10) for tinting a spectacle lens (60) is provided, which comprises a reception unit (20) suitable for holding the spectacle lens (60) in a predefined position and a masking unit (30) suitable for masking a part of a surface of the spectacle lens (63) when held by the reception unit (20) in a predefined position.

IPC Classes  ?

• B29D 11/00 - Producing optical elements, e.g. lenses or prisms

Abstract

The invention relates to a computer-implemented method for determining the reflectance behavior of a surface of an object, having the following steps: - providing images of the object (8), - ascertaining a plurality of regions of the surface of the object, and - determining the reflectance behavior for each ascertained region of the surface of the object on the basis of the provided images. In order to provide the images of the object, - one or more first regions (15, 16) of the surface of the object is/are illuminated with light of a first point light source and the one or more first regions is/are captured and - one or more second regions (17) of the surface of the object is/are illuminated with light of a flat light source (14, 18, 19) and the one or more second regions is/are captured; and in order to determine the reflectance behavior, - first reflectance data is ascertained from the captured image(s) of the first region(s), - second reflectance data is ascertained from the captured image(s) of the second region(s), and - the reflectance behavior of the second region(s) is determined on the basis of the first and second reflectance data, wherein the first reflectance data is extrapolated via the second region(s) while taking into consideration the second reflectance data.

IPC Classes  ?

• G01N 21/55 - Specular reflectivity
• G01N 21/47 - Scattering, i.e. diffuse reflection

Abstract

The invention relates to computer-implemented method for determining the reflectance behavior of surface (7) of an object (6), having the following steps: • - providing multiple images of the object (6), said images differing in terms of the capturing direction and/or the illumination direction during the capturing process, • - generating data sets with entries, each of which describes a reflectance value derived from the images, an assigned capturing direction, and an assigned illumination direction, each data set being assigned to a respective point of the surface of the object (6), and • - ascertaining missing entries of the data sets on the basis of entries of already generated data sets, wherein a degree of similarity to the reflectance values derived from the images is taken into consideration, an average value or a weighted average value of the reflectance values derived from the images is calculated, or the reference values derived from the images are subjected to a smoothing process.

IPC Classes  ?

• G01N 21/27 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection
• G01N 21/55 - Specular reflectivity
• G01N 21/47 - Scattering, i.e. diffuse reflection

Abstract

A coating of spectacle lenses is applied by physical vapor deposition (PVD). A method for physical vapor deposition includes: providing a crucible containing a first evaporation material and a second evaporation material, wherein the first evaporation material has a first vapor pressure and the second evaporation material has a second vapor pressure different from the first vapor pressure. A ratio of an exposed surface of the first evaporation material and an exposed surface of the second evaporation material in the crucible is adapted to counterbalance the difference in vapor pressure between the first and the second evaporation material. Concurrent evaporation of the first evaporation material and the second evaporation material from the same crucible take place. The disclosure further relates to a crucible for physical vapor deposition and a physical vapor deposition system in particular for coating an optical surface such as a spectacle lens.

IPC Classes  ?

• C23C 14/24 - Vacuum evaporation
• C23C 14/30 - Vacuum evaporation by wave energy or particle radiation by electron bombardment

Abstract

The present invention relates to a spectacle lens comprising one or more ring-shaped focusing structures each having a respective width and a surface-based fill factor being larger than 17 % and equal or lower than 70 % for said width in a range of 0.6 mm to 0.7 mm.

IPC Classes  ?

• G02C 7/02 - LensesLens systems

Abstract

A method for manufacturing a spectacle lens having a lens substrate and at least one coating is disclosed. The method includes providing a lens substrate having an uncoated or precoated front surface and an uncoated or precoated back surface, applying at least one coating to at least one of the surfaces of the lens substrate, the surface of the at least one coating being modifiable when contacted with at least one medium able to modify the surface of the at least one coating, contacting the surface of the at least one coating, partially or completely, with the at least one medium, considering the individual peripheral refraction, obtaining the spectacle lens having the lens substrate and the at least one coating, the surface of the at least one coating being modified according to the individual peripheral refraction.

IPC Classes  ?

• C03C 17/32 - Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating with organic material with synthetic or natural resins
• B29D 11/00 - Producing optical elements, e.g. lenses or prisms

Abstract

The present invention relates to a spectacle lens comprising one or more ring-shaped focusing structures or one or more ring-shaped diffusing structures each having a respective width and at least one additional feature of the following group of features: (i) a central clear zone having a central clear zone width within a range of 6 mm to 9.4 mm and said width being equal to or lower than 0.7 mm; (ii) said width, being lower than 0.5 mm; (iii) a surface-based fill factor being larger than 17 % and equal or lower than 70 % for said width in a range of 0.6 mm to 0.7 mm; (iv) a surface-based fill factor being larger than 15 % and equal or lower than 60 % for said width in a range of 0.5 mm to 0.6 mm; (v) a surface-based fill factor being larger than 6 % and equal or lower than 50 % for said width lower than 0.5 mm.

IPC Classes  ?

• G02C 7/02 - LensesLens systems

Abstract

The invention relates to a testing device (1) for detecting defects of transparent test specimens (5), in particular of ophthalmological lenses, with an illumination device (2) for transilluminating test specimens (5) to be examined and with an image acquisition device (3) for imaging the test specimen (5) transilluminated by the illumination device (2). The illumination device (2) comprises a plurality of linearly adjustable light sources (8) for generating a stripe pattern (7). In order to capture the stripe pattern (7), the acquisition duration of the image acquisition device (3) can be adjusted in such a way that the light emitted by each of the light sources (8) is detected as a light stripe (19.1). Furthermore, the invention relates to a testing method for detecting a defect of a transparent specimen.

IPC Classes  ?

• G01N 21/958 - Inspecting transparent materials
• G01M 11/02 - Testing optical properties
• G01N 21/88 - Investigating the presence of flaws, defects or contamination

Goods & Services

(1) Spectacle lenses and parts thereof.

Abstract

A method for manufacturing a spectacle lens including a lens substrate and at least one coating is disclosed. The method includes at least the following steps of providing a lens substrate comprising an uncoated or precoated front surface and an uncoated or precoated back surface, covering at least one of the surfaces of the lens substrate partially or completely with at least one coating composition, drying and/or precuring the at least one coating composition, contacting the surface of the at least one coating composition with at least one mechanical means, curing and/or hardening the at least one coating composition and obtaining a spectacle lens comprising a lens substrate and at least one coating, the surface topography of the at least one coating being modified by the at least one mechanical means.

IPC Classes  ?

• B29D 11/00 - Producing optical elements, e.g. lenses or prisms
• G02C 7/02 - LensesLens systems

Abstract

Methods using mobile devices and mobile devices for determining a visual point of a person are provided. The method comprises determining a head position and a pupil position of the person while the person looks at a target, and determining the visual point based on an avatar of at least an eye portion of the head of the person, which avatar is set to the determined head and pupil position. The method further comprises generating the avatar by the mobile device.

IPC Classes  ?

• G02C 7/02 - LensesLens systems
• A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
• G02C 13/00 - AssemblingRepairingCleaning
• 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

Abstract

A method of head image capturing is provided, comprising: capturing, with a mobile device, a first image of at least an eye portion of a head of a person, and capturing second images of the head with the mobile device while the head is turning in a first direction relative to the mobile device. The method is characterized by searching for predefined landmarks in each of the second images, and stopping capturing the second images in response to identifying at least a predefined subset of the predefined landmarks in a second image of the plurality of second images. A corresponding mobile device is also provided.

IPC Classes  ?

• G02C 13/00 - AssemblingRepairingCleaning
• G06V 40/16 - Human faces, e.g. facial parts, sketches or expressions

Abstract

Methods and devices for head image registration are provided using a plurality of combined 2D and depth images, for example RGBD images, of a head recorded from different positions. Landmark points are determined for each of the combined images. The registration is performed as a coarse registration based on the landmark points followed by a fine registration based on full point clouds. Based on the registration, a head model may be generated.

IPC Classes  ?

• G06T 7/33 - Determination of transform parameters for the alignment of images, i.e. image registration using feature-based methods

Goods & Services

Advertising, marketing and sales promotion; provision of business assistance and commercial information and advice for consumers in the choice of products and services; business assistance, management and administrative services. Human healthcare services.

Abstract

The present invention relates to automatic detection and identification of eye-wear frames in images. In particular, the present disclosure relates to a device (10) for spectacle frame identification, wherein the device is configured to perform the steps of: obtaining image data (20) of a spectacle frame (22) or image data of a subject (21) wearing the spectacle frame (22); identifying a spectacle frame (22') corresponding to the spectacle frame (22) in the image data; wherein identifying the spectacle frame (22') comprises determining a representation (30) of the spectacle frame (22) from the image data (20) in a compressed space. Identification can be performed based on a pre-trained neural network or a pre- trained neural network for image segmentation, wherein only a limited subset one or more final layers are trained for spectacle frame identification. The device can be configured to perform the step of selecting one or more frames in a predetermined set of spectacle frames based on a distance metric to the identified spectacle frame (22'), the identified spectacle frame being the spectacle frame identified in the step of identifying the spectacle frame (22') corresponding to the spectacle frame (22) in the image data; wherein the predetermined set of spectacle frames comprises a selection of spectacle frames available in an inventory, in particular an inventory that an eye-wear specialist has in stock or is able to sell. The present invention further relates to a corresponding system and method for spectacle frame identification and a corresponding computer program product.

IPC Classes  ?

• G06V 10/77 - Processing image or video features in feature spacesArrangements for image or video recognition or understanding using pattern recognition or machine learning using data integration or data reduction, e.g. principal component analysis [PCA] or independent component analysis [ICA] or self-organising maps [SOM]Blind source separation
• G06V 10/74 - Image or video pattern matchingProximity measures in feature spaces
• G06V 40/16 - Human faces, e.g. facial parts, sketches or expressions

Abstract

The present invention relates to a computer-implemented method (500) for determining at least one visual parameter of at least one eye (302) of a person (300), wherein an at least one first visual stimulus (200) and an at least one second visual stimulus (210) are displayed at the same time on the screen (102) effecting a resulting eye movement depending on the at least one visual parameter; wherein the at least one first visual stimulus or the at least one second visual stimulus (210) is a pursuit stimulus. The present invention further relates to an apparatus (100) for determining a visual parameter of at least one eye (302) of a person (300). Due to the displaying the at least one first visual stimulus (200) and the at least one second visual stimulus (210), particularly with at least one differing visual stimulus parameter, at the same time on the screen (102) the method (500) is more robust and more exact in determining the visual parameter compared to known methods wherein only one visual stimulus is being displayed.

IPC Classes  ?

• A61B 3/02 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient
• A61B 3/024 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for determining the visual field, e.g. perimeter types
• A61B 3/028 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuitySubjective types, i.e. testing apparatus requiring the active assistance of the patient for determination of refraction, e.g. phoropters
• A61B 3/06 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing light sensitivity, e.g. adaptationSubjective types, i.e. testing apparatus requiring the active assistance of the patient for testing colour vision
• A61B 3/032 - Devices for presenting test symbols or characters, e.g. test chart projectors
• A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
• 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

Abstract

The present invention relates to a computer-implemented method (400), a computer program and an apparatus (100) for determining at least one lens shape (202) for producing at least one optical lens (200) for at least one eye (302) of a person (300) as well as to use of a personal computer. Herein, the method (400) comprises the following steps: a) receiving first information (450) about at least one refractive error of at least one eye (302) of a person (300) and second information (440) related to the person (300); b) determining at least one lens shape (202) for at least one optical lens (200) for the at least one eye (302) of the person (300) designated for correcting the at least one refractive error of the at least one eye (302) of the person (300) using the first information (450), wherein at least one lens shape parameter of the at least one optical lens (200) is adapted to the second information (440) related to the person (300), wherein at least one piece of the second information (440) is determined from data recorded by at least one electronic component (102) of the at least one personal computer used by the person (300). As the present invention relies on recording the second information (440) using a personal computer, the recording may be performed anywhere and by any person.

IPC Classes  ?

• G02C 7/02 - LensesLens systems
• A61B 3/028 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuitySubjective types, i.e. testing apparatus requiring the active assistance of the patient for determination of refraction, e.g. phoropters
• A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes