Provided is a cleaning device (10) adapted for cleaning substrates (40) for spectacle lenses mounted on a calotte-shaped substrate holder (14). The cleaning device (10) comprises one or more ejection nozzles (18) for providing an inflow of a cleaning gas for cleaning the substrates (40) mounted on the calotte--shaped substrate holder (14), and one or more suction nozzles (20) for providing an outflow of at least a part of the cleaning gas flowed in. The cleaning device (10) is adapted such that a difference between a flow rate of the outflow of the cleaning gas and a flow rate of the inflow of the cleaning gas is 20% of the low rate of the inflow or less. The cleaning device (10) further comprises a first cleaning arm (16) having an arc shape, wherein at least one of the one or more ejection nozzles (18) is arranged at the first cleaning arm (16). (Figure 1A)
B08B 5/02 - Cleaning by the force of jets, e.g. blowing-out cavities
B08B 5/04 - Cleaning by suction, with or without auxiliary action
B08B 15/04 - Preventing escape of dirt or fumes from the area where they are producedCollecting or removing dirt or fumes from that area from a small area, e.g. a tool
A vacuum blocking piece for vacuum blocking a lens blank has a support element with an upper part and a lower part. The lower part can engage with a clamping device for clamping the vacuum blocking piece. The vacuum blocking piece further includes a fluid-permeable blank contacting element. An upper surface of the blank contacting element, which is configured to hold the lens blank, is made of an elastic material. The lower surface contacts the upper part of the support element. The vacuum blocking piece fixes the lens blank to the upper surface of the blank contacting element by applying a vacuum within the blocking piece to provide suction through essentially the entire upper surface of the blank contacting element to fix the lens blank to the upper surface of the blank contacting element and to fix the blank contacting element to the upper part of the support element.
A method implemented on a processor is disclosed, the method being configured for generating a mass identifier configured to be used in manufacturing one or more spectacle lenses, the method comprising: - generating one or more semi-finished spectacle lenses by using at least one tool mold (614), wherein a mass identifier for unique identification is assigned to each semi-finished spectacle lens, wherein the mass identifier is a unique identifier (310, 410) comprising an ID element (312, 412), wherein an ID generator service has multiple instances, wherein the unique identifier (310, 410) comprises a further element being uniquely configured, wherein the further element is a static parameter, which refers to a single instance of the ID generator service used for generating the ID element (312, 412) of the unique identifier (310, 410).
A mold apparatus for manufacturing a spectacle lens has one plastic mold element determining the front surface of the spectacle lens and either one glass mold element or one metal mold element determining the back surface of the spectacle lens. Further, a method for manufacturing the mold apparatus and a method for manufacturing a spectacle lens with the mold apparatus are disclosed.
An apparatus and a method for determining a choroidal topography over a region on a retina of an eye of a person are disclosed. The apparatus is also used to determine an effect of an ophthalmic lens design on the choroidal topography. The apparatus includes two individual displays, two optical transfer elements, a measuring device, and an optical filter. The displays provide a retinal stimulus and the optical transfer elements projects the retinal stimulus or a phase map to a region on a retina. The phase map contains a modified retinal stimulus. The measuring device images a choroidal topography over the region on the retina by capturing reflected light. The optical filter separates the reflected light from the projected phase map. Further, the second optical transfer element simultaneously projects the individual phase maps at a different retinal eccentricity to a peripheral region and a foveal region of the retina.
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
A61B 90/00 - Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups , e.g. for luxation treatment or for protecting wound edges
6.
SPECTACLE LENS AND METHOD FOR GENERATING DESIGN DATA FOR A SPECTACLE LENS
A computer-implemented method generates design data for manufacturing a single vision spectacle lens having a prescribed power and an edge contour fitted to a predefined spectacle frame. Prescription information regarding the prescribed power for the spectacle lens and geometrical information regarding the predefined spectacle frame is provided. Moreover, a geometrical profile of at least one surface of the spectacle lens is optimized. Further, a spatial variation of a refractive index of the spectacle lens is optimized, wherein optimizing the geometrical profile of the surface of the spectacle lens and 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.
An apparatus for accommodating an article in a vacuum-coating installation has a carrier with a coating opening and a retaining device for retaining the article in the coating opening. The retaining device has a pivot bearing that is secured on the carrier and a pivot axis, about which it is possible to pivot the retaining device to thereby turn the article in the coating opening. The pivot bearing has a bearing body with a circumferentially closed mount for a round body, which extends in the direction of the pivot axis, wherein the bearing body has a circumferentially closed mount and a circumferentially open mount for the round body, and therefore, when the retaining device is arranged on the carrier, the round body can be introduced through the circumferentially open mount into the circumferentially closed mount.
Spectacle lens comprising i) a structure-free simply connected central zone, said structure-free simply connected central zone comprising an optical centre of said spectacle lens or a fitting point of said spectacle lens, said optical centre being defined as in ISO 13666:2019(E), entry 3.2.15, said fitting point being defined as in ISO 13666:2019(E), entry 3.2.34, said structure-free simply connected central zone having a central zone width, said central zone having a central zone width, ii) a ring-shaped connected peripheral zone, said ring-shaped connected peripheral zone being limited by an onset line representing an absolute value of a difference in surface mean power above a predefined threshold, said absolute value of the difference in surface mean power being relative to a surface mean power at the optical centre of the spectacle lens or at the fitting point of the spectacle lens, characterized in that a plurality of structures being positioned between said structure-free simply connected central zone and said ring-shaped connected peripheral zone.
Spectacle lens comprising i) a structure-free simply connected central zone, said structure-free central zone comprising an optical centre of said spectacle lens or a fitting point of said spectacle lens, said optical centre being defined as in ISO 13666: 2019 (E), entry 3.2.15, said fitting point being defined as in ISO 13666: 2019 (E), entry 3.2.34, said central zone having a central zone width, said central zone having a central zone width, ii) a ring-shaped connected peripheral zone, said ring-shaped connected peripheral zone being limited by an onset line representing an absolute value of a difference in surface mean power above a predefined threshold, said absolute value of the difference in surface mean power being relative to a surface mean power at the optical centre of the spectacle lens or at the fitting point of the spectacle lens, characterized in that a plurality of structures being positioned between said simply connected structure-free central zone and said ring-shaped connected peripheral zone.
CARL ZEISS VISION TECHNICAL SERVICES (GUANGZHOU) LTD. (China)
Inventor
Mergel, Olga
Novelli, Emanuele
Wagemann, Ernst Ulrich
Windbiel, Julian
Wan, Yucheng
Li, Arvin
Abstract
The present invention provides a method for recycling a thermoset spectacle lens material by using vitrimerization process. The present invention also provides the recycled thermoset spectacle lens materials obtained therefrom. The method for manufacturing aspectacle lens material which can be recycled without adding foreign material employing vitrimerization process and the spectacle lens material manufactured therefrom are also provided.
C08J 11/10 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
C08J 11/26 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds containing carboxylic acid groups, their anhydrides or esters
11.
INK JET PRINTING METHOD OF TINTING A SPECTACLE LENS AND TINTED SPECTACLE LENS
An ink jet printing method of tinting a spectacle lens substrate includes providing a spectacle lens substrate having a front surface and a back surface, printing droplets of a first inkjet printing ink to form a first layer and droplets of a second inkjet printing ink to form a second layer, and curing the first layer and the second layer together in a combined curing step. The spectacle lens substrate can optionally be precoated. At least one inkjet printing ink is colored. The first layer and second layer each cover fully or partially the front surface and/or back surface, and at least partially overlap to form a stack. Moreover, a tinted spectacle lens having 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 is disclosed.
CARL ZEISS VISION TECHNICAL SERVICES GUANGZHOU LTD. (China)
Inventor
Mergel-Kuehn, Olga
Novelli, Emanuele
Wagemann, Ernst Ulrich
Windbiel, Julian
Wan, Yucheng
Li, Jianyuan
Abstract
The present invention provides a method for recycling a thermoset spectacle lens material by using vitrimerization process. The present invention also provides the recycled thermoset spectacle lens materials obtained therefrom. The method for manufacturing a spectacle lens material which can be recycled without adding foreign material employing vitrimerization process and the spectacle lens material manufactured therefrom are also provided.
C08J 11/10 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
C08J 11/26 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds containing carboxylic acid groups, their anhydrides or esters
13.
METHOD BEING CONFIGURED FOR CALCULATING BY A COMPUTER A COMPENSATED DIGITAL TWIN OF A SPECTACLE LENS
The invention discloses a method being configured for calculating by a computer a compensated digital twin of a spectacle lens for the purpose of a use of the compensated digital twin for a manufacture of the spectacle lens, said compensated digital twin being based on a predefined digital twin of a spectacle lens, the method is characterized in the step of: - combining a compensated surface of a predefined digital twin of a spectacle lens with a respective other surface of said predefined digital twin resulting in said compensated digital twin.
A computer-implemented method for calculating a digital twin of a spectacle lens is provided to use the digital twin for a manufacture of the spectacle lens. The digital twin has a predefined power distribution and contains a layer stack with a plurality of individual layers, each layer having a non-uniform layer thickness with a spatial variation and a uniform refractive index. The method includes determining the spatial variation of the layer thicknesses of the individual layers to achieve the predefined power distribution by a spatial control of optical path lengths.
A computer-implemented method for determining a refractive error of an eye of a person includes the following steps: a) generating input data containing a distance between the eye of the person and a visual stimulus displayed to the eye of the person and b) generating outcome data containing a refractive error of the eye of the person determined by evaluating the input data. A position of the entrance pupil of the eye of the person is considered when the refractive error of the eye of the person is determined. A computer program, a field device, a remote device, a determining device, a method for producing a geometrical model of a spectacle lens, and a method for producing a spectacle lens are also disclosed. The present disclosure provides a fast, easy, versatile, reliable, and accurate approach for determining a refractive error of an eye of a person.
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 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
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
16.
Method and system for operating an optometry device
A computer-implemented method for operating an optometry device includes the following steps: generating a first data set including information about a distance of a user of the optometry device to an object and tuning a tunable lens of the optometry device based on the distance of the user of the optometry device to the object based on the first data set. The first data set is generated by using a LiDAR sensor, which measures the distance of the user of the optometry device to the object by evaluating a scene represented by the first data set.
A61B 3/113 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for determining or recording eye movement
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
A61B 3/14 - Arrangements specially adapted for eye photography
G01S 17/08 - Systems determining position data of a target for measuring distance only
G01S 17/86 - Combinations of lidar systems with systems other than lidar, radar or sonar, e.g. with direction finders
17.
MASKING DEVICE FOR MASKING A SPECTACLE LENS PRODUCT IN A COATING DEVICE, COATING DEVICE AND METHOD FOR MANUFACTURING A SPECTACLE LENS PRODUCT
A masking device (100) for masking a spectacle lens product (102) in a coating device (118) is provided. The masking device (100) includes a holder element (104) for holding the spectacle lens product (102) relative to a carrier (106) of the coating device (118). The masking device (100) also includes a supporting frame (108) being mountable or mounted on the carrier (106) of the coating device (118), where the supporting frame (108) is rotatable about a rotational axis (114) when mounted at the carrier (106) and where the supporting frame (108) at least partially surrounds the holder element (104) when mounted at the carrier (106). The masking device (100) also includes a masking stencil (110) mounted at the supporting frame (108) such that the masking stencil (110) is movable from a masking position (112) to a hiding position (116) and vice versa by rotating the supporting frame (108) around the rotational axis (114).
The present invention relates to a method being configured for calculating, by a computer, data of a spectacle lens for the purpose of a use of the data for a manufacture of the spectacle lens, the method comprising the step of generating data of a randomly modulated surface for said spectacle lens and the method being characterized in that said data of said randomly modulated surface resulting from an application of a continuous random surface modulation function or a scaled continuous random surface modulation function to a predefined surface for said spectacle lens.
The present invention refers to a method for manufacturing a spectacle lens, the method comprising the step of curing a structured coating material on a surface of a spectacle lens, said structured coating material resulting in a structured coating on said surface of said spectacle lens, a structure of said structured coating providing a reduced light reflection to said spectacle lens, said structured coating material being a coating material, said coating material resulting in a coating providing an enhanced hydrophobicity to said spectacle lens, irrespective of said structure of said structured coating, the method being characterized in that said coating material resulting in said coating provides an enhanced abrasion resistance to said spectacle lens, irrespective of said structure of said structured coating.
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
G02B 1/14 - Protective coatings, e.g. hard coatings
G02B 1/18 - Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films
G02B 1/118 - Anti-reflection coatings having sub-optical wavelength surface structures designed to provide an enhanced transmittance, e.g. moth-eye structures
20.
AN APPARATUS AND A METHOD CONFIGURED FOR DETERMINING A CHOROIDAL TOPOGRAPHY OVER A REGION ON A RETINA
The present invention relates to an apparatus (110) and a method (210) configured determining a choroidal topography (218) over a region (114, 114') on a retina (116) of an eye (117) of a person as well as to a use of the apparatus (110) for determining an effect of at least one ophthalmic lens design on the choroidal topography (218). Herein, the apparatus (110) comprises: - at least two individual displays (122, 122') each configured for providing a retinal stimulus (112, 112'), thereby providing two independent retinal stimuli (112, 112'); - at least two optical transfer elements, comprising a first optical transfer element and a second optical transfer element, each configured for projecting at least one of the retinal stimulus (112, 112') or a phase map to a region on a retina of an eye of a person, wherein the phase map comprises a modified retinal stimulus; - a measuring device (142) for capturing a choroidal topography (218) over the region (114, 114') on the retina (116) of the eye (117) of the person by using reflected light received from the region (114, 114') on the retina (116) of the eye (117) of the person; - an optical filter (152) configured for separating the reflected light received from the region (114, 114') on the retina (116) of the eye (117) of the person from the phase map projected to the region (114, 114') on the retina of the eye of the person, wherein the second optical transfer element is further configured for simultaneously projecting each of the at least two individual phase maps at a different retinal eccentricity to each of at least two separate regions (134, 134') on the retina (116) of the eye (117) of the person, wherein the separate regions (134, 134') comprise a peripheral region and a foveal region on the retina (116) of the eye (117) of the person.
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
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
21.
SYSTEM, SPECTACLE FRAME, COMPUTER-IMPLEMENTED METHOD, AND COMPUTER PROGRAM FOR CONTROLLING A PROGRESSION OF MYOPIA IN AT LEAST ONE EYE OF A PERSON
The present invention relates to a system (110), a spectacle frame (112), a computer- implemented method, and a computer program for controlling a progression of myopia in at least one eye of a person, wherein the system comprises: - a spectacle frame (112) comprising a pair of spectacle lenses (114, 114') and at least one of the spectacle lenses (114, 114') incorporated by the spectacle frame (112), wherein the spectacle frame (114) or at least one of the spectacle lenses (114, 114') are configured for applying a treatment process during a period of time, wherein the treatment process is designed for reducing the progression of myopia in at least one eye of a person, wherein the treatment process is determined by at least one characteristic parameter, wherein the treatment process is selected from a class of treatment processes comprising: ∙ an optical treatment of the at least one eye of the person; ∙ a radiation treatment of the at least one eye of the person; ∙ a pharmaceutical treatment of the at least one eye of the person; and ∙ a behavioral treatment of the person, and - a processing device (116) configured for determining at least one result of the treatment process on the progression of the myopia in the at least one eye of the person, wherein the spectacle frame (112) or at least one of the spectacle lenses (114, 114') are configured for applying at least two treatment processes, each selected from a different class, simultaneously to the person during a first period of time (210).
G02C 7/08 - Auxiliary lensesArrangements for varying focal length
A61F 9/00 - Methods or devices for treatment of the eyesDevices for putting in contact-lensesDevices to correct squintingApparatus to guide the blindProtective devices for the eyes, carried on the body or in the hand
G02C 7/10 - Filters, e.g. for facilitating adaptation of the eyes to the darkSunglasses
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
scsc (216) of the eye (112) of the person; - a meridian direction (220) of an astigmatism of the eye (112) of the person; - a distance (140) between the eye (112) of the person and at least one visual stimulus (118) displayed to the eye (112) of the person, wherein the at least one visual stimulus (118) is simultaneously aligned in the meridian direction (220) of the astigmatism and a direction perpendicular thereto; b) generating outcome data (222) configured to comprise - at least one refractive value (212) of the eye (112) of the person, wherein the at least one refractive value (212) of the eye (112) of the person is determined by evaluating the input data (214), wherein the distance (140) between the eye (112) of the person and the at least one visual stimulus (118) is determined from response of the person indicating that the at least one visual stimulus (118) has been perceived by the person to have an equivalent blur in the meridian direction (220) of the astigmatism and in the direction perpendicular thereto. The present invention provides a fast, easy, versatile, reliable and accurate approach for determining at least one refractive value (212) of an eye (112) of a person.
The present invention refers to a method (218), a computer program, and an apparatus (110) for determining at least one refractive value (216) of an eye (112) of a person (114) and to a related method (210) for producing at least one ophthalmic lens (212) for the eye (112) of the person (114). The method (218) comprises the following steps: a) (220) displaying a visual stimulus (120) to an eye (112) of a person (114), wherein the visual stimulus (120) comprises a plurality of concentric radial lines (126, 126',...), wherein each radial line (126, 126',...) has a different angular value (128, 128',...) with respect to a center (130) of the visual stimulus (120); b) (224) recording a reaction by the person (114) to the visual stimulus (120); and c) (226) determining at least one refractive value (216) of the eye (112) of the person (114) by evaluating the reaction by the person (114) to the visual stimulus (120), wherein step a) (220) comprises that each radial line (126, 126',...) is projected at a particular defocus plane to the eye (112) of the person (114), whereby a particular dioptric power is provided to the eye (112) of the person (114), and wherein step b) (224) comprises that recording the reaction by the person (114) to the visual stimulus (120) indicates that a particular radial line (144) at a particular angular value (146) has an appearance of maximum sharpness (148) to the eye (112) of the person (114).
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
24.
SPECTACLE LENS COMPRISING RING-SHAPED STRUCTURES AND METHOD
The present invention relates to a spectacle lens comprising a plurality of ring-shaped structures, each ring-shaped structure having a uniform width, one ring-shaped structure or more ring-shaped structures of said plurality of ring-shaped structures each having a varying power, the spectacle lens being characterized in that a variation of a surface mean power comprises one random component or more random components, said variation being along a ring-shaped path within said one ring-shaped structure or along a ring-shaped path within a same ring-shaped structure of each of said more ring- shaped structures.
Provided is a computer-implemented method (200) for providing an occupation order (100) for transferring lens blanks (18) from a first carrier (10) to a second carrier (14). The method (200) comprises receiving (202) carrier identification information about the first carrier (10) having a first number of slots (12) and the second carrier (14) having a second number of slots (16), wherein each of the slots (14) is adapted to carry a lens blank (18). The method further comprises determining (204) an arrangement of the first number of slots (12) at the first carrier (10) and an arrangement of the second number of slots (16) at the second carrier (14) based on the received information. Moreover, the method comprises defining (206) an assignment of at least a part of the first number of slots (12) of the first carrier (10) to a corresponding number of the second number of slots (16) of the second carrier (14), and providing (208) a control signal and/or instructions for transferring multiple lens blanks (18) from at least the part of the first number of slots (12) of the first carrier (10) to the corresponding number of the second number (16) of slots of the second carrier (14) according to the defined assignment.
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
B24B 41/00 - Component parts of grinding machines or devices, such as frames, beds, carriages or headstocks
B65G 29/00 - Rotary conveyors, e.g. rotating discs, arms, star-wheels or cones
B65G 35/06 - Mechanical conveyors not otherwise provided for comprising a load-carrier moving along a path, e.g. a closed path, and adapted to be engaged by any one of a series of traction elements spaced along the path
B65G 37/02 - Flow sheets for conveyor combinations in warehouses, magazines or workshops
B65G 47/53 - Devices for transferring articles or materials between conveyors, i.e. discharging or feeding devices between conveyors which cross one another
26.
COMPUTER IMPLEMENTED METHOD OF DETERMINING A BASE CURVE FOR A SPECTACLE LENS AND METHOD OF MANUFACTURING A SPECTACLE LENS
A computer-implemented method of determining a base curve value representing a base curve for a front surface of a spectacle lens is disclosed. The method includes receiving individual prescription data and determining the base curve value for the front surface of the spectacle lens based on the prescription data. In particular, the base curve value is calculated from the received prescription data based on a functional relationship between one or more values included in the prescription data and the base curve value.
Provided are a method and a device for generating a set of virtual representation data of a spectacle lens. A set of scanning data of a profile of an edge surface of the spectacle lens is obtained by scanning the edge surface using an optical scanner. Further, a set of imaging data is obtained with a camera facing a front or a back surface of the spectacle lens. Additionally, generating a set of virtual representation data of the spectacle lens is based on the set of scanning data and the set of imaging data. Further, a set of virtual representation data 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. The optical scanner is a laser scanner for scanning a height profile of the edge surface.
A computer-implemented method for generating printing instructions for inkjet printing a spectacle lens, wherein the printing instructions are based on a digital twin of the spectacle lens, the digital twin being sliced into a layer stack. The method includes the steps of 1) positioning a volume element in a discrete xm+1, ym+1, zm+1 . . . xn+1, yn+1, zn+1 position of a layer of the layer stack, based on a positioning of a volume element in a discrete xm, ym, zm . . . xn, yn, zn position of an adjacent layer of the layer stack; or 2) not positioning a volume element in a discrete xm+1, ym+1, zm+1 . . . xn+1, yn+1, zn+1 position of a layer of the layer stack, based on a positioning of a volume element in a discrete xm, ym, zm . . . xn, yn, zn position of an adjacent layer of the layer stack.
A method of providing refractive microstructures on a surface of a spectacle lens body by an additive manufacturing process is provided, in which the refractive microstructures are formed by applying and curing a curable material. The process includes forming a layer of a first liquid or viscous curable material and an additional amount of the first curable material or an amount of a second liquid or viscous curable material at locations at which the refractive microstructures shall be formed before curing or pinning the at least one first curable material. Protrusions formed by the additional first curable material or the second curable material are levelled out by material transport processes within the liquid or viscous material in the layer of the at least one curable material. In addition, a spectacle lens with refractive microstructures is provided.
A device (10) for determining a contact pressure during a cleaning process for a spectacle lens is provided. The device (10) comprises a spectacle lens dummy (12) and a pressure sensor (14) arranged on and/or in the spectacle lens dummy (12) and designed to detect a contact pressure applied to the spectacle lens dummy (12) during a cleaning process for the spectacle lens dummy (12) and to provide information depending on the detected contact pressure.
Provided is a mounting frame (10) suitable for mounting a spectacle lens product (12) in a coating process. The mounting frame (10) comprises a frame element (14) adapted to surround at least partially a circumferential edge (12a) of the spectacle lens product (12) when mounted in the mounting frame (10), and a mechanical clamp element (16) adapted to mechanically fixate a mounting extension (18) of the spectacle lens product to the frame element (10), when the spectacle lens product (12) is mounted in the mounting frame (10). The mounting frame (10) is characterized in that the frame element (14) is made of a heat- sustainable polymeric material sustaining a temperature of at least 120° C.
C23C 14/56 - Apparatus specially adapted for continuous coatingArrangements for maintaining the vacuum, e.g. vacuum locks
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
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
B05C 13/02 - Means for manipulating or holding work, e.g. for separate articles for particular articles
B05D 1/18 - Processes for applying liquids or other fluent materials performed by dipping
The present invention provides a method configured for tinting a spectacle lens (1) by applying a tinting solution at least to a first area (50) of a surface the spectacle lens, wherein the surface of the spectacle lens comprises a second area (10) which has been subject to an irradiation, characterized in that at least the second area (10) of the surface having been uncoated when the irradiation is provided.
The present invention relates to a method for calculating a digital twin of a spectacle lens having a curved lens surface for the purpose of a use of the digital twin for a manufacture of the spectacle lens, said digital twin of the spectacle lens comprising a layer stack with individual layers, the method being characterized in the step of - determining said layer stack such that a form of an interface of an individual layer replicates said curved lens surface of said digital twin.
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.
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.
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
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.
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
A head image registration uses 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.
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.
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.
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.
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
41.
METHOD AND DEVICE FOR FACE POSE ESTIMATION AND DETERMINATION OF CENTRATION PARAMETERS
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.
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).
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).
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.
COMPUTER-IMPLEMENTED METHOD FOR DETERMINING PRINTING PARAMETER VALUES OF AN INKJET PRINTING DEVICE, A DATA PROCESSING SYSTEM, A METHOD FOR INKJET PRINTING AND AN INKJET PRINTING DEVICE
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.
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
50.
METHODS AND DEVICES FOR MANUFACTURING A PLURALITY OF OPTICAL LENSES
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''').
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).
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.
CARL ZEISS VISION TECHNICAL SERVICE (GUANGZHOU) LTD. (China)
Inventor
Zhou, Jun
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).
CARL ZEISS VISION TECHNICAL SERVICES (GUANGZHOU) LTD. (China)
Inventor
Zhou, Jun
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).
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.
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).
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.
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.
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
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.
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.
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.
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
CARL ZEISS VISION TECHNICAL SERVICE (GUANGZHOU) LTD. (China)
Inventor
Liu, Ouyang
Zhang, Songjin
Philipp, Jester
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.
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.
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.
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.
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
66.
DEVICES AND METHODS FOR DETERMINING DATA RELATED TO A PROGRESSION OF REFRACTIVE VALUES OF A PERSON
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.
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
67.
SPECTACLE LENS AND METHOD FOR GENERATING DESIGN DATA FOR A SPECTACLE LENS
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.
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.
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.
Computer-implemented method for determining printing parameter values of an inkjet printing device, a data processing system, a method for inkjet printing and an inkjet printing device
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.
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
71.
METHOD AND DEVICE FOR MEASURING THE VISION OF A PERSON
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.
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.
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.
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).
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
75.
COMPUTER-IMPLEMENTED METHOD AND DEVICES FOR DETERMINING AT LEAST ONE ASTIGMATISM PARAMETER OF AT LEAST ONE EYE OF A PERSON
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).
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
76.
COMPUTER-IMPLEMENTED METHOD FOR CALCULATING A DIGITAL TWIN OF A SPECTACLE LENS
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.
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
77.
INK JET PRINTING METHOD OF TINTING A SPECTACLE LENS AND TINTED SPECTACLE LENS
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.
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).
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.
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).
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.
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
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.
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.
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
84.
METHOD FOR CALIBRATING OPTICAL COATING APPARATUSES
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.
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).
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
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.
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
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.
METHOD FOR TINTING OR DECOLORING A LENS, LENS OBTAINABLE BY THE METHOD FOR TINTING OR DECOLORING A LENS, LENS COMPRISING A TINT OR DECOLORIZATION, LENS HOLDER AND TINTING DEVICE FOR TINTING A LENS
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.
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.
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).
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
91.
Method for tinting or decoloring a lens, lens obtainable by the method for tinting or decoloring a lens, lens comprising a tint or decolorization, lens holder and tinting device for tinting a lens
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.
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
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.
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).
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
95.
METHOD OF PROVIDING REFRACTIVE MICROSTRUCTURES ON A SURFACE OF A SPECTACLE LENS AND SPECTACLE LENS DESIGN
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.
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.
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 3/02 - Subjective types, i.e. testing apparatus requiring the active assistance of the patient
A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
A61B 3/12 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
97.
DEVICES AND METHODS FOR PROCESSING EYEGLASS PRESCRIPTIONS
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.
G06V 30/413 - Classification of content, e.g. text, photographs or tables
98.
Computer-implemented method, computer program, data processing system and device for determining the reflectance behavior of a surface of an object, and storage medium with instructions stored thereon for determining the reflectance behavior of a surface of an object
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.
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
99.
Apparatus and method for determining the refractive error of an eye
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.
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
100.
METHOD AND LENS HOLDER FOR TINTING A SPECTACLE LENS
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.
