EP3931628A1 - Enregistrement de données à employer dans un procédé de fabrication d'un verre de lunettes - Google Patents

Enregistrement de données à employer dans un procédé de fabrication d'un verre de lunettes

Info

Publication number
EP3931628A1
EP3931628A1 EP20706328.0A EP20706328A EP3931628A1 EP 3931628 A1 EP3931628 A1 EP 3931628A1 EP 20706328 A EP20706328 A EP 20706328A EP 3931628 A1 EP3931628 A1 EP 3931628A1
Authority
EP
European Patent Office
Prior art keywords
data
user
frame
spectacle
spectacle lens
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20706328.0A
Other languages
German (de)
English (en)
Inventor
Michael Gamperling
Helmut Wietschorke
Peter Johann Haas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carl Zeiss Vision International GmbH
Original Assignee
Carl Zeiss Vision International GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Carl Zeiss Vision International GmbH filed Critical Carl Zeiss Vision International GmbH
Publication of EP3931628A1 publication Critical patent/EP3931628A1/fr
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C13/00—Assembling; Repairing; Cleaning
    • G02C13/003—Measuring during assembly or fitting of spectacles
    • G02C13/005—Measuring geometric parameters required to locate ophtalmic lenses in spectacles frames

Definitions

  • the present invention relates to a data record stored on a storage medium for use in a method for manufacturing a spectacle lens, a method and a computer program for generating the data record, and a method for manufacturing the spectacle lens.
  • the standard DIN EN ISO 13666: 2013-10 (hereinafter referred to as "standard"), meanwhile replaced by DIN EN ISO 13666: 2019-12, defines basic terms in ophthalmic optics, in particular terms for semifinished spectacle lens products, also known as “spectacle lens blanks" refers to finished spectacle lenses, in particular to a large number of parameters which relate to the finished spectacle lenses or to a spectacle frame selected by a user of the spectacles for at least introducing the spectacle lenses, and sets out methods for adapting the spectacle lenses to the user of the spectacles and to the glasses frame selected by the user.
  • References to the standard in the present invention are references to DIN EN ISO 13666: 2013-10.
  • the process for adapting the spectacle lenses to the spectacle frame selected by the user is usually carried out during a visit by the user to an optician according to the following sequence with the following procedural steps:
  • Determination of the correction performing the subjective refraction to determine a required correction of ametropia of the eyes of the user of the glasses, using already known metrologically recorded values, for example from a glasses passport of the user, and / or with a objective refraction of both eyes of the user can be determined by performing a refraction determination using a known refractometer;
  • Selection of a glasses frame selection of at least one glasses frame by the user
  • “Lens selection” selection of a lens by the user and optician, whereby the "lens selection” defines the properties of the lens, in particular the lens type, a refractive index, a tint and at least one coating of a lens, the lens type being included in the determination of the centering rule.
  • centering data which are determined using the present standard, only inadequately record a real wearing situation of glasses by the user, since model-like simplifications and neglects are made in the standard.
  • These include, in particular, measured values that are only determined on one side but are used on both sides when determining the corneal vertex distance, the assumption of a "disc plane”, which can also be referred to as a "lens plane”, instead of a curved surface of the spectacle lenses, the position of interfaces that using a caste system alone instead of a full one Edge curve of unrimmed lenses according to the standard, Section 8.4.7 of the, the assumption of identical dimensions for both eyes of the user.
  • a comparable problem can arise when calculating the two glass surfaces of the spectacle lenses, which is also referred to as a “lens calculation”, before machining the spectacle lens blanks in the factory.
  • the glass bill is based on the above Norm from centering data of the respective spectacle lens, in particular from the values x, y, A, B, FSW and the pantoscopic angle defined in more detail in the norm as well as below, determines a three-dimensional arrangement of the lens plane and eyes, and thus determines the optimal courses of the two glass surfaces for all possible directions of view through the lens.
  • centering data according to the aforementioned standard are given in relation to a simplified model in which the two lenses of a spectacle frame are approximated by two lens planes at an angle to one another, deviations from the actual geometry can occur during a back calculation. This effect occurs above all when the manufacturer of the spectacle lenses and the manufacturer of a centering device differ.
  • the centering data are specified in relation to a spectacle frame coordinate system and / or a lens coordinate system.
  • these are generally not aligned exactly parallel and / or perpendicular in space.
  • An inclination of the head can therefore result in an axial position of a spectacle lens in the wearing position deviating from the axial position that was determined when performing a refraction determination with respect to the user's head.
  • the user's head is generally forced into a neutral position, which is based on the vertical of the refractometer used.
  • the optician orients himself to the horizontal of the spectacle frame when it comes to the shaped rims of the spectacle lenses.
  • the user's eyes compensate for a tilting movement that occurs as a result by involuntarily rotating around the viewing axis.
  • the eyes are thus twisted in relation to the spectacle frame and the spectacle lenses; the axis position deviates in relation to the eye by an amount of the head tilt or by a part thereof from the axis position during the refraction determination.
  • the optician first creates a virtual model of a section of the user, in particular of the user's head, which is also referred to as an “avatar”, specifically under the same conditions as when creating the centering mount.
  • the creation of the avatar takes place without the user wearing glasses at the time the avatar is created, in particular in order to decouple the selection of the glasses frame spatially and temporally from the user's visit to the optician.
  • the user can thus use the avatar by means of an internet-based application in order, for example, to put on and select spectacle frames for the avatar from home, which are available as a spatial model.
  • the user since the user is not wearing glasses at the time the avatar is created, it is not possible to determine centering data.
  • the lens can also be selected, in particular due to the lack of data on the material and design of the spectacle lenses at this point in time, only after the spectacle frame has been selected.
  • the centering data can only then be determined, either as a so-called “virtual centering” based on a spatial model of the glasses frame placed on the avatar or as a so-called “real centering” after the glasses frame has been manufactured and provided on the basis of the spatial model of the glasses frame Place at the optician's. Further problems can arise here if the optician only physically keeps some of the usable models for spectacle frames in stock and therefore the centering data cannot be completely determined. The disadvantage of both configurations is that the centering data must be determined before the spectacle lenses are made available.
  • WO 2005/069063 A1 discloses a device for determining centering data for glasses with a recording unit which can be controlled by a computer and takes electronic images, which is arranged behind a divider element and has a fixation device.
  • the fixation device generates at least one speckle pattern.
  • the structural properties of the fixation device ensure that the subject's gaze is oriented in a predetermined direction.
  • the speckles can be superimposed with different patterns, e.g. a cross-shaped pattern.
  • the invention also relates to a method for determining centering data. With the method and device according to the invention, it is possible for test persons of different visual acuity to measure the relative centering data in a habitual posture from a short distance.
  • DE 10 2008 012 268 A1 discloses a device and a method for three-dimensional display of display image data, in particular for positioning a test person, comprising at least one image recording device which is designed to generate image data of at least a partial area of a test person's head, at least one image display device which is designed to display image data three-dimensionally in such a way that a fixation target is displayed three-dimensionally and / or a partial area of the subject's head is illuminated and / or information data are displayed three-dimensionally, and at least one data processing device which is designed to use the image data to process parameter data of the subject to determine.
  • DE 10 2016 004 430 A1 discloses a method for determining optical parameters of a test subject and a computer program product for performing the method.
  • the method comprises the steps of: generating image data from at least partial areas of a system of the head of the test person and a spectacle frame arranged thereon in the position of use; and iteratively determining the optical parameters by evaluating the generated image data, wherein the evaluation of the generated image data comprises computer-aided automatic image processing of the image data and executing a number of predetermined manual image selection steps that can be determined by a user of the video centering system, and the number of iteration steps , which are carried out during the iterative determination of the optical parameters, depends on the number of manual image selection steps carried out by the user.
  • DE 10 2016 113 374 B3 discloses a method for determining a distant visual point on a spectacle lens which can be accommodated in a spectacle frame and which has a frame plane in which an image lying in an image plane has at least one Section of a spectacle frame placed on a test person is captured with a camera having an optical axis, while the test person looks into the camera with a viewing direction penetrating the frame plane at least one eye, in which a forward tilt angle of the glasses frame is determined based on the position of the image plane the detected angle of inclination of the image plane with respect to the vertical direction is corrected to a pre-inclination angle related to the vertical direction, at which a head rotation angle of the head of the test person formed by the optical axis of the camera with a plane perpendicular to the spacing line of the pupils of the eyes of the test person is determined , in which the head rotation angle is corrected according to the detected inclination angle of the image plane with respect to the vertical direction to a corrected head rotation angle corresponding to a horizontal alignment of the
  • EP 3 422 087 A1 discloses methods and devices for correcting centering parameters and / or an axial position of a sphero-cylindrical refraction based on a habitual head posture.
  • a representation of the head is shown on a display, so that a habitual head posture can be set intuitively.
  • EP 3 425 446 A1 discloses a method for virtual fitting of glasses as well as a corresponding computer program and a computing device.
  • First measurement points are defined on a 3D model of a person's head, and a model of a spectacle frame is adapted on the basis of the first measurement points.
  • defining the first measuring points comprises defining second measuring points on a parametric head model, adapting the parametric head model to the 3D model of the head of the person and determining the first measuring points based on the second measuring points and adapting.
  • the second measuring points only have to be defined once on the parametric head model in order to be able to define the first measuring points for a large number of different 3D models of different heads.
  • EIS 2010/0128220 A1 discloses a method and a device for measuring the position of marked points of the eye of a user.
  • the method here includes a method step for recording images in different relative positions of the user in order to determine reference points of the eye and the to determine the excellent point as a function of the images.
  • the values of the posture parameters are obtained by means of a position-determining element which has at least one known geometrical characteristic that is attached to the user's head.
  • Each of the recorded images includes a representation of the position-determining element.
  • the posture parameter is determined as a function of the images recorded and the known geometric characteristics.
  • EIS 2014/253875 A1 discloses a method for determining ocular and optical measurements for producing and adjusting corrective spectacle lenses for a user by means of a camera.
  • the method uses a protocol to reconstruct the ocular system in three dimensions by modeling the ocular system to provide accurate ocular and optical measurements.
  • the method uses test objects which are connected or not connected to the face of the user.
  • the object of the present invention is to provide a data record stored on a storage medium for use in a method for producing a spectacle lens, a method and a computer program for generating the data record, and also a To provide a method for producing the spectacle lens which at least partially overcome the disadvantages and limitations of the prior art listed.
  • the data set and the present method are intended to make it possible to manufacture the spectacle lens after a single data record has been recorded for an adaptation of the spectacle lenses to the user of the glasses and to the glasses frame selected by the user.
  • a different lens than the lens originally selected by the user can subsequently be used for the glasses without the user having to carry out a further data record for the aforementioned adjustment.
  • the terms “have”, “have”, “comprise” or “include” or any grammatical deviations therefrom are used in a non-exclusive manner. Accordingly, these terms can relate to situations in which, besides the feature introduced by these terms, no further features are present, or to situations in which one or more further features are present.
  • the expression “A has B”, “A has B”, “A comprises B” or “A includes B” can refer to the situation in which, apart from B, no other element is present in A , ie to a situation in which A consists exclusively of B, as well as to the situation in which, in addition to B, one or more other elements are present in A, for example element C, elements C and D or even further elements.
  • the present invention relates to a data record stored on a storage medium for use in a method for producing a spectacle lens.
  • the data set that is used in a method for manufacturing a spectacle lens includes at least the following data values:
  • the data record comprising the generic centering data, thus relates in particular to the user of the glasses and the glasses frame selected by the user, the glasses lens being provided for insertion into a glasses frame selected by a user of the glasses or as a frameless glasses lens.
  • glasses denotes any element that has two individual elements Comprises spectacle lenses and a spectacle frame, wherein the spectacle lens is provided for introduction into a spectacle frame, which is selected by a user of the glasses.
  • the lens can be used as a frameless lens.
  • a “spectacle lens” is understood to mean an optical lens which, in accordance with DIN EN ISO 13666: 2013-10, is intended to be used to measure and / or correct ametropia and / or to protect the eye or to change the appearance of a user wherein the optical lens is worn in front of the user's eye but not in contact with the eye.
  • a spectacle lens can be assigned to one or more “lens types”, selected from a single vision lens, a multifocal lens, in particular a two-strength lens or a three-strength lens, a varifocal lens or a degressive lens.
  • other types of spectacle lenses are conceivable.
  • the spectacle lens can preferably have an optically transparent material, in particular selected from glass, or a transparent organic plastic, each with different, selectable refractive indices.
  • an optically transparent material in particular selected from glass, or a transparent organic plastic, each with different, selectable refractive indices.
  • the “spectacle frame” is set up to hold the two lenses firmly.
  • the spectacle frame can have a frame, usually referred to as a “spectacle frame”, which has a receptacle for one of the two spectacle lenses on the right and left sides.
  • the spectacle frame frame can preferably have a transparent or non-transparent material, in particular a solid, but flexible and light material.
  • full-rim glasses which have a frame that surrounds the two glasses, from “half-rim glasses” in which the two glasses only partially adjoin a holder, and “frameless glasses” in which the glasses each have a hole for receiving have a bracket.
  • At least one temple piece for wearing the glasses on one ear and / or at least one pad on a nose of a user of the glasses.
  • a total of the glasses frame, the glasses temples and optionally available pads can also be referred to as a “glasses frame”.
  • each receptacle for the spectacle lenses is closed and can therefore preferably have a groove running around the inside of the spectacle frame.
  • the spectacle frame thus has an “inner contour”, which is used to denote a profile of a shape encircling the interior of the spectacle frame.
  • a spatial course can be at least one for receiving the spectacle lenses set up part of the spectacle frame can be specified via a so-called "frame edge curve” or "edge curve”.
  • the frame edge curve or edge curve here preferably comprises a large number of data points, the large number of data points also being able to be referred to as a “point cloud”.
  • Each data point of the frame edge curve or edge curve comprises a metrologically recorded edge value of the glasses frame, the “edge value of the glasses frame” indicating a spatial coordinate relating to the inner contour of the glasses frame, in particular the groove surrounding the inside of the glasses frame frame.
  • each data point of the frame edge curve or edge curve can relate to a selected section of the inner contour, for example to a specified angular range, preferably 0.25 ° to 10 °, particularly preferably 0.5 ° to 2.5 °, in particular 1 ° to 2 ° °, the inner contour of the glasses frame.
  • the frame edge curve or edge curve can thus have 10 to 1550, preferably 30 to 1500, preferably 36 to 1440, more preferably 144 to 720, in particular 180 to 360, data points.
  • the present invention also understands this to mean the representation of the edge or supporting edge described in the standard, Section 13.4.
  • the present invention also understands this to mean the representation of the edge of the spectacle lens as a data set from which the three-dimensional course of the edge of the spectacle lens facing away from the spectacle wearer is clearly derived, possibly on the basis of additional quantities describing the spectacle lens can be determined.
  • the representation of the edge of the spectacle lens can be, for example, the area surrounded by the projection of the edge of the spectacle lens in the image plane of an image sensor of an image acquisition device, into which the spectacle lens is imaged during image acquisition.
  • the edge of a spectacle lens in this case corresponds to an inner rim of the spectacle frame.
  • the edge of a spectacle lens is to be understood in this case on the one hand to mean the edge of a spectacle lens corresponding to the inner rim of the spectacle frame and on the other hand the part of the outer edge of the lens not enclosed by the spectacle frame.
  • the edge of a lens in frameless glasses is the outer edge of the lens.
  • the frame edge curve or edge curve is preferably the shape-determining boundary of the spectacle lens located in the front surface of the spectacle frame facing away from the face, which in half-rim or full-rim glasses coincides partially or completely with the front, inner edge of the spectacle frame.
  • the frame edge curve or edge curve is equal to the outer edge of the lens located on the front side or the inner edge of the frame located on the front side.
  • the frame edge curve or edge curve is the same as the outer edge of the lens located on the front side or the inner edge of the frame located on the front side, insofar as a structure is given by the frame. If there is no structure given by the frame in the case of half-rim glasses, the edge curve in the front surface of the glasses frame facing away from the face is equal to the outer edge of the lens located on the front.
  • edge curve In the case of frameless glasses there is no analogous structure of the frame, ie the term edge curve here always refers to the outer edge of the lens on the front surface of the glasses frame facing away from the face.
  • edge curve can thus be used synonymously for the two terms “outer edge of the lens” and “inner edge of the frame”, depending on whether the term is related to the lens or the frame.
  • the edge of a spectacle lens can be determined, for example, using the method described in D. Borza et al., Eyeglasses Lens Contour Extraction from Facial Images Using an Efficient Shape Description, Sensors (2013), Vol. 13, pp. 13638-13658, at which the number of points of the image points lying on the edge of the spectacle lenses is modeled as a superposition of mathematical functions based on the definition of Fourier descriptors. These mathematical functions describe different edge shapes.
  • the functions used to model the rim of spectacle lenses become stochastic, i.e. randomly selected from a finite set of possible functions.
  • the model for the edge of the spectacle lenses, described on the basis of the selected functions, is then compared and evaluated with an edge of the spectacle lens determined in an edge detection method.
  • the edge of a spectacle lens can also be determined, for example, as described in DE 10 2011 115 239 A1, by determining the contour of the edge of the spectacle lenses with recourse to a spectacle-lens-specific tracer data set that contains the course of the edge in a digital image Glasses wearer.
  • the edge of a spectacle lens can also be determined, for example, by the computer-implemented method described in WO 2018/137863 A1 for determining the Representation of the edge of a spectacle lens take place.
  • This method comprises the provision of image data to the spectacle wearer with a worn spectacle frame and the calculation of information data derived from the image data.
  • a support disk can be introduced into the glasses frame or between the bridge and the temple.
  • the term “support disk” relates to any element made of a slightly curved, optically transparent material, in particular selected from glass, or a transparent organic plastic without optical effect, which is designed to serve as a template for the contour of a spectacle lens.
  • a support disc or a demo disc is a spectacle lens without dioptric power that is inserted into the spectacle frame for demonstration purposes.
  • the support disk which is generally in the form of a slightly curved disk, thus has an outer contour, which denotes the profile of the shape of the support disk running around the side of the disk, which is also referred to as "glass edge” or "glass edge mount".
  • the data points of the frame edge curve or the edge curve can thus preferably be selected from metrologically recorded edge values of the lens edge, the frame of the lens edge or provided three-dimensional design data of the frame of the lens edge.
  • Methodologically recorded means either a mechanical scanning of the edge by a tracer, which scans either the positive shape of the support lens or the spectacle lens or the negative shape of the frame groove, or an optical method that consists of stereoscopic image recordings or laser-assisted processes with line projection three-dimensional course of the outer glass edge or the inner frame edge determined.
  • data set denotes a plurality of data values which, as explained in more detail below, can be based on measured values recorded by measurement technology and / or on existing data, in particular three-dimensional construction data of the frame of the lens edge, and which are thereby are related in terms of content that they relate to the user and the glasses frame.
  • the data record, the generic centering data comprises at least the following data values:
  • the at least one spatial direction vector for specifying the at least one viewing direction of the user through the spectacle lens
  • the data set, the generic centering data can also include or be supplemented by additional information that relates to one or more corrections of the specified data values, in particular with regard to the user, the spectacle frame or the spectacle lens , Respectively.
  • the additional information can be included in the specified data record as at least one additional data value.
  • the additional information can be included in at least one existing data value of the data set.
  • particularly preferred correction values are:
  • a spatial change in the user's head posture in particular the change in a habitual head posture, i.e. a correction of a forward tilt of the
  • a lateral inclination of the head of the user at the time of the image recording in particular defined by the angle of the frame horizontal to the horizontal plane in space;
  • the term “spatial” denotes data values that are distributed over three-dimensional space and are therefore not limited to one plane.
  • the frame edge curve or edge curve is in the form of a three-dimensional curve, that is, the large number of data points of the frame edge curve or edge curve extends in the form of edge values of the glasses frame, the lens edge or the lens edge frame over the three-dimensional space, so that for a complete description of each data value three of each other independent values become necessary.
  • the three mutually independent values can preferably be specified in a spatial coordinate system, preferably in a Cartesian coordinate system in which the coordinates x, y and z are perpendicular to one another. Other configurations or other coordinate systems, in particular a cylindrical coordinate system, are also possible.
  • the frame edge curve or Edge curve in general, in particular neither on a pane level nor on a frame level, as defined in the standard DIN EN ISO 13666: 2013-10.
  • the reference point on each eye of the user can be specified as a position in the form of three mutually independent values in the selected spatial coordinate system.
  • position denotes a position of the reference point in space.
  • reference point denotes a clearly identifiable point on the user's eye, which is preferably connected to the at least one viewing direction of the user through the spectacle lens, preferably as the spatial starting point of the spatial directional vector for specifying the spatial position of the directional vector.
  • the reference point for each of the two eyes can particularly preferably be selected from a group comprising a pupil center, a pupillary reflex, a corneal apex or an eye pivot point.
  • the data value for the position of each of the two reference points of the user can preferably be determined by means of image processing.
  • the center of the pupil, the pupillary reflex and / or the apex of the cornea can be determined from at least two recordings of the user in each of which at least one of the two pupils or the apex of the cornea can be identified.
  • the at least one frontal receptacle for the user and the at least one lateral receptacle for the user can be used.
  • the “pupil” refers to an entry opening in each eye through which radiation in the form of light can enter the interior of the eye. The person skilled in the art can determine the center of rotation of the eye in a known manner.
  • the pupil can be viewed as an exit opening, through which a viewing direction of the user from the eye through the spectacle lens onto the surroundings can be determined.
  • a spatial starting point or a reference point is specified in the form of three mutually independent values.
  • the viewing direction can be identified, for example, with the direction of the coordinate z, while the other two coordinates are perpendicular to this.
  • the term “viewing direction” here refers to a spatial direction in which the user of the glasses looks through the lens.
  • a so-called “zero viewing direction” can preferably be used, which is defined as the viewing direction in the horizontal direction straight through the spectacle lens to an infinitely distant target. It is particularly preferred here that the viewing directions of both eyes are parallel run towards each other. In the event that the viewing directions of both eyes are not parallel to each other, the viewing direction of both eyes can be recorded separately.
  • an activity-specific viewing direction of the user which the user only assumes when performing at least one selected activity, can be distinguished from this.
  • at least two main directions of gaze can be specified for each eye of the user, for example for gazing into the distance ("distant gaze direction"), in the vicinity ("near gaze direction”) and possibly in an area in between .
  • the user's viewing directions and, if applicable, the one or more further viewing directions, for example the activity-specific viewing directions can be determined by measurement, preferably by means of the methods and devices shown in WO 2005/069063 A1.
  • the spectacle lens for all data values of the data set, i.e. for all data values of the generic centering data that is used in the method for manufacturing the spectacle lens, i.e.
  • the same spatial coordinate system is used in each case for the spatial coordinates of the reference point on each eye of the user, for the at least one spatial direction vector for specifying a direction of view of the user through the spectacle lens and for the spatial frame edge curve or edge curve, in particular of the glasses frame, the lens edge or the lens edge frame .
  • both the position of the reference point on each eye of the user, the direction in which the user is looking through the lens and the frame edge curve or edge curve, in particular the frame, the lens edge or the lens edge frame, are brought into a fixed relationship to one another within the selected spatial coordinate system .
  • the same spatial coordinate system is used for all data values of the data set of the generic centering data, so that all data values of the data set of the generic centering data are specified in relation to the same spatial coordinate system.
  • the data set of the generic centering data can thus be created without iteration, i.e.
  • a one-time determination of the data values of the data set can preferably suffice so that it can be used in a method for manufacturing the spectacle lens.
  • the centering device i. Terminal 2 of the company Carl Zeiss Vision GmbH at least the cornea-vertex distance HSA and the frame lens angle FSW from the side image calculated, other data such as the pane length (actually: width) a and the pane height b, the pupil distance PD are calculated from the front image.
  • HSA cornea-vertex distance
  • FSW frame lens angle
  • the pane length a when calculating data from the front image (PD), conversely, results of the calculations from the side image are required (e.g. the HSA).
  • the numerical values are ideally determined iteratively: in the first step, the best possible estimates for the unknown parameters are used in order to calculate values from the page image. These are then used for the calculations from the front image. The calculation can thus be repeated in the side image, etc. This iteration can improve the accuracy of the numerical values of the classic centering data.
  • the generic centering data can preferably be obtained from at least two simultaneously recorded, preferably calibrated, images of the head of a spectacle wearer with an anatomically adapted and fitted spectacle frame or from the corresponding two-dimensional rendered recordings of the avatar of the head of a spectacle wearer with a virtually fitted and virtually fitted spectacle frame in one step to calculate.
  • the at least two simultaneously recorded images are preferably recorded from at least two viewing directions.
  • the at least two simultaneously captured images are also preferably at least one front image and at least one side image of the head of a spectacle wearer with an anatomically adapted and attached spectacle frame or from the corresponding two-dimensional rendered images of the avatar of the head of a spectacle wearer with a virtually adapted and virtually attached spectacle frame .
  • the generic centering data can also be determined from a three-dimensional virtual model of the head with a virtually adapted and virtually attached spectacle frame.
  • the calculations necessary for the generic centering data are preferably made entirely from the at least two simultaneously recorded, preferably calibrated, images of the head of a spectacle wearer with an anatomically adapted and attached spectacle frame or from the corresponding two-dimensional rendered recordings of the avatar of the head of a spectacle wearer with virtually adapted and virtual calculated or taken from the corresponding three-dimensional virtual model of the head with virtually adapted and virtually attached spectacle frame.
  • the calculation does not require iteration to achieve the best possible accuracy.
  • the removal is a selection of data points of the three-dimensional virtual model of the head with virtually adapted and virtually put on spectacle frames.
  • the virtual model of the At least two data points representing the eyes are taken from the head and at least the data points representing the frame edge curve or edge curve are taken from the three-dimensional model of the virtually adapted and virtually fitted spectacle frame.
  • the front part of a bill without bracket serve.
  • the angle of inclination is measured, and the frame angle is defined between this and the glass planes.
  • the front and back surfaces of the lens are optimized before the lens is manufactured, taking into account the individually determined correction values of the subjective refraction and the position of the lens in front of the respective eye.
  • the latter was taken into account when calculating the classic centering data.
  • this classic centering data is used to calculate back to a spatial arrangement of eyes and spectacle lenses before the actual optimization of the front and rear surfaces can take place in three-dimensional space. This retroactive calculation is flawed due to the aforementioned neglect.
  • the front and rear surfaces can be optimized directly on the basis of the exactly known generic centering data and, optionally, the correction values.
  • the spectacle lens manufactured taking into account the generic centration data is therefore best adapted to the individual correction needs of the spectacle wearer.
  • the entire process can be used to determine a classic centering data set from the generic centering data, the optional corrections made and the lens type. This does not have to be saved; it can be discarded immediately and regenerated at any time if necessary. Last but not least, the type of glass can be replaced by another at any time if the customer wishes or other conditions make this necessary.
  • a so-called “visual point” can be determined unambiguously and reproducibly as the intersection of the user's line of sight with a rear surface of the spectacle lens on the eye side.
  • a visual point can consequently be specified for each of the at least two viewing directions.
  • the data set of the generic centering data proposed according to the invention which includes at least the data values specified above, is independent of the type of glass and the centering rule determined by it.
  • the at least one visual point can thus be used in particular to determine classic centering data from it at any time, taking into account the selected type of glass.
  • classic centering data thus denotes a further set of centering values determined from the data record of the generic centering data, which are used to manufacture the spectacle lenses from a spectacle lens blank, taking into account the user of the glasses and the spectacle frame selected by the user. If, for example, the long-range direction of vision and a near-vision direction are used as the two viewing directions in varifocals, the respective visual points through the varifocal lens describe the distant centering point or the fem-visual point according to the standard, Section 5.16, and the near-centering point or the near-visual point according to the standard, Section 5.17. However, any other arrangement of at least two different viewing directions is conceivable.
  • the further set of centering values, which are used to manufacture the spectacle lenses from a spectacle lens blank, taking into account the spectacle wearer and the spectacle frame selected by the spectacle wearer preferably comprises at least
  • the frame lens angle the angle between the frame plane and the right or left lens plane, according to the standard, section 17.3, and / or - the coordinates of the centering point, ie the amount of the distance of the centering point from the nasal vertical side or from the lower horizontal side of the box system, measured in the plane of the disc, according to the standard, Section 17.4, and / or
  • the vertex of the cornea stood away i.e. the distance between the rear surface of the spectacle lens and the apex of the cornea measured in the viewing direction perpendicular to the frame plane, according to the standard, Section 5.27, and / or
  • the angle of inclination or pantoskopi see angle i.e. the angle in the vertical plane between the normal to the front surface of a spectacle lens in its center according to the box system and the fixation line of the eye in the primary position, which is usually assumed to be horizontal, according to the standard, Section 5.18, and / or
  • the far visual point i.e. the assumed position of the visual point on a spectacle lens for seeing into the distance under certain conditions, according to the standard, and / or
  • the near visual point i.e. the assumed position of the visual point on a spectacle lens for near vision under certain conditions, according to the standard, section 5.17.
  • the specification of the data values comprised by the proposed data set of the generic centering data is completely sufficient to be able to manufacture the spectacle lenses, even in the event that a change in the lens selection should occur after the data set has been generated.
  • the classic centering data can preferably be determined from the proposed data set independently of the determination of the data values. In particular, this can be done by the optician if he has a tubular lens or a non-edged lens, i.e. A spectacle lens with two finished optical surfaces is clamped in a grinding device before the edge processing according to the standard, Section 8.4.7, in order to process the edge of the spectacle lens according to the frame edge curve or the edge curve and, if necessary, the groove profile according to the profile of the frame edge.
  • the groove profile is understood here to mean the cross section of the contact surface between the spectacle lens and the spectacle frame of full-rim spectacles.
  • the data values of the data set of the generic centering data proposed here can be used to obtain at least one, preferably all, of the following centering values usually used in the manufacture of the spectacle lens:
  • Spectacle lens is specified, and the frame plane (FSW) according to the standard, Figure 11;
  • the data values of the data set proposed herein for the generic centering data can be used directly, i.e. without further processing intermediate steps, for the optimization of the front and rear surfaces of the spectacle lens, i.e. the glass bill, can be used.
  • visual points deviating from the far visual point can be taken into account in accordance with the respective centering rule to be applied;
  • the spatial direction vector of the line of sight can be rotated by an angle that matches the centering rule, in order to determine the visual point of the new line of sight through the eye-side rear surface of the spectacle lens, starting from an eye pivot point.
  • An optionally determined near vision direction can also be used to adapt a corridor length of a varifocal spectacle lens to the wearing situation.
  • Other corrections, in particular with regard to a habitus, a head rotation or an inclination of the head of the user or a displacement of a stamp figure in spectacle lenses that have a separate far zone and near zone, can be taken into account analogously.
  • the user's head tilt can be derived from one of the following variables:
  • the inclination of the head can be viewed as a correction parameter for an axial position of the spectacle lens and can be incorporated into the generic centering data as a further point.
  • further correction parameters can be used before the calculation of the classic centering data, preferably a change in inclination, a head rotation, a y-shift, i.e. a vertical shift of the stamp figure and / or a change in the direction of view.
  • the present invention relates to a method for generating a data set of generic centering data, which is used in a method for manufacturing a spectacle lens.
  • the method generates a data record which is used in the method for manufacturing the spectacle lens, the data record comprising at least the following data values:
  • each of the data values is generated from measured values or from existing data.
  • the reference point for each of the two eyes can particularly preferably be selected from a group comprising a pupil center, a pupillary reflex, a cornea apex or an eye pivot point.
  • the data value for the position of each of the two reference points of the user can preferably be determined by means of image processing.
  • the center of the pupil, the pupillary reflex and / or the apex of the cornea can be determined from at least two recordings of the user in each of which at least one of the two pupils or the apex of the cornea can be identified.
  • the at least one frontal receptacle for the user and the at least one lateral receptacle for the user can be used.
  • the viewing directions of the user through the spectacle lens can preferably be determined by measurement, in particular by means of the methods and devices shown in WO 2005/069063 A1.
  • the one described therein The method for determining centering data for glasses includes the generation of a speckle pattern as a fusion stimulus for a glasses wearer and the recording of an image of at least the eye area of a glasses wearer including the glasses frame. On the basis of this image recording, the centering data are then determined using mathematical methods.
  • the device described herein comprises a fixation device that generates a speckle pattern.
  • the data points of the frame edge curve or the edge curve can be recorded by measurement, preferably from a single frontal image of the user and preferably at least one simultaneous lateral image of the user from both sides, provided that the user has the glasses frame with the aforementioned Recordings can be determined by means of image processing.
  • the data points of the frame edge curve or edge curve can be selected from construction data of the eyeglass frame, insofar as this is available as a spatial model.
  • the design data of the eyeglass frame can, for example, be provided directly from the manufacturer's model data for the eyeglass frame, for example from CAD data, or, in particular before the glasses are adapted to the eyeglass frame selected by the user, recorded in an optical measurement laboratory using an optical recording unit are, preferably scanned by means of a tracer or recorded by means of a scanner, preferably an optical scanner.
  • the present invention relates to a computer program for generating a data set which is used in a method for manufacturing a spectacle lens, the computer program being set up to generate the data set of the generic centering data, the data set comprising at least the following data values :
  • each of the data values is generated from measured values or from existing data.
  • the present invention relates to a computer-readable storage medium on which a data set, which is used in a method for manufacturing a spectacle lens, is stored, the data set comprising at least the following data values: - spatial coordinates of a reference point on each eye of the user;
  • the present invention relates to a method for manufacturing a spectacle lens, the spectacle lens being manufactured by machining a spectacle lens blank, the spectacle lens blank being machined using classic centering data, the classic centering data being determined from a data set of the generic centering data, with the dataset of the generic centering data includes at least the following data values:
  • the machining of a spectacle lens blank can preferably take place by means of a machining device, in particular in a mechanical machining device, the classic centering data being used to control the machining device.
  • the specification of a lens type can also be used to determine the centering data, the lens type relating to the spectacle lens selected by the user.
  • the data set according to the invention of the generic centering data and the associated methods and the computer program have numerous advantages over conventional data sets of the classic centering data and the associated methods and computer programs.
  • the production of one spectacle lens can take place after a single acquisition of a data record for an adaptation of the spectacle lenses to the user of the glasses and to the glasses frame selected by the user.
  • This can a different lens, ie a lens type other than the lens originally selected by the user, can subsequently be used for the glasses without the user having to carry out a further data record for this adjustment.
  • a bifocal lens according to the standard Section 14.1.26 can be used on the basis of this one-time recorded data record. Any corrections that aim at this can also be made retrospectively without changing the other values of the data record
  • any change to the above-mentioned arbitrary corrections i.e. the change in the side tilt, the inclination or the angle of rotation of the head, the manipulation of the height of the centering points, the adjustment of the viewing directions to certain visual tasks, and a change in the type of lens would change Values for the classic centration data (frame lens angle, coordinates of the centration point, corneal vertex distance, inclination angle or pantoscopic angle, fem-visual point, optionally the near-visual point).
  • the values of the classic centering data changed by the corrections do not allow any conclusions to be drawn about the corrections made. They can no longer be reconstructed either.
  • the values of the classic centering data changed by the corrections no longer permit precise conclusions to be drawn about the originally recorded generic centering data, and these can no longer be reconstructed exactly from this.
  • any corrections and / or the selection of the lens type can be made retrospectively when using the generic centering data, at any time, however, at the latest before the start of the production process of the spectacle lens, and optionally changed again.
  • any corrections and / or the selection of the lens type can be made after a single acquisition of a data record of the generic centering data, if the optician determines that the head posture and the direction of gaze for the main visual task for which the spectacle lens is to be made differ from the head posture and Direction of view differs when the data record of the generic centering data is recorded once.
  • the data record of the generic centering data recorded once can be used directly, together with the optional corrections described above, for optimizing the front and rear surfaces of the spectacle lens. It is not necessary to use the classic centering data to create a three-dimensional arrangement of the lens to be manufactured and the reference point of the respective eye in order to then calculate and optionally optimize the surfaces of the lens on the basis of this arrangement.
  • the optician keeps only some of the actually usable models for spectacle frames physically in stock, after generating the avatar, the user can demonstrate the desired spectacle frame while wearing it virtually.
  • the generic centering data can then be determined immediately from this, and the spectacle frame can be ordered together with spectacle lenses in a single ordering process.
  • a spectacle lens can thus be manufactured regardless of whether this data record consists of
  • Embodiment 1 Data set stored on a storage medium for use in a method for producing a spectacle lens, the data set comprising at least the following data values:
  • Embodiment 2 Data set according to the preceding embodiment, wherein the spatial frame edge curve or edge curve relates to a spectacle frame or a lens edge frame.
  • Embodiment 3 Data set according to one of the preceding embodiments, wherein the edge curve
  • Embodiment 4 Data set according to one of the preceding embodiments, wherein all data values are given in relation to the same spatial coordinate system.
  • Embodiment 5 Data set according to one of the preceding embodiments, the data set being generated without iteration.
  • Embodiment 6 Method according to one of the preceding embodiments, wherein the reference point on the user's eye is selected from a pupil center, a pupil reflex, a corneal vertex or an eye pivot point.
  • Embodiment 7 Method according to one of the preceding embodiments, wherein the at least one viewing direction of the user through the spectacle lens is selected from: a zero viewing direction; a main line of sight; an activity-specific viewing direction of the user, in particular a reading-specific viewing direction of the user; a viewing direction of the user modified by correction values.
  • Embodiment 8 The method according to one of the preceding embodiments, wherein the frame edge curve or edge curve is in the form of a plurality of data points, the data points being selected from: edge values of the glasses frame or the lens edge frame recorded by measurement, in particular by scanning using a tracer or from a recording using a scanner; Construction data of the glasses frame or the lens rim frame.
  • Embodiment 9 Data set according to one of the preceding embodiments, wherein the data set comprises additional information, wherein the additional information relates to at least one correction of the data values.
  • Embodiment 10. Data record according to the preceding embodiment, the additional information being included in the data record as at least one further data value.
  • Embodiment 11 Data record according to one of the two preceding embodiments, the additional information being included in at least one of the data values of the data record.
  • Embodiment 12th data set according to one of the four preceding embodiments the correction of the data values comprising at least one of the following correction values:
  • Embodiment 13th data set according to the preceding embodiment the spatial change in the user's head posture being a change
  • Form embodiment 14 Data set according to one of the two preceding embodiments, wherein the change in the vertical coordinate of the at least one visual point comprises a displacement of a stamp figure parallel to the vertical direction of a frame plane of the spectacle frame.
  • Embodiment 15 A method for generating a data record which is used in a method for producing a spectacle lens, the data record comprising at least the following data values:
  • Embodiment 16 Method according to the preceding embodiment, wherein the spatial frame edge curve or edge curve relates to a spectacle frame or a lens edge frame.
  • Embodiment 17 Method according to one of the two preceding embodiments, wherein each of the data values is recorded by means of an optical measuring device.
  • Embodiment 18 Method according to the preceding embodiment, wherein the data values are recorded by mechanical methods and used directly or offset against optically determined data and then used.
  • Embodiment 19 Method according to the preceding embodiment, with at least one frontal image of the user and at least one lateral image of the user being taken simultaneously with respect to the viewing direction of the user while the user is wearing the spectacle frame.
  • Embodiment 20 Method according to the preceding embodiment, wherein a virtual model of a section of the user is created from the at least one frontal image of the user and the at least one lateral image of the user,
  • Embodiment 21 Method according to the preceding embodiment, wherein the section of the user comprises at least each eye of the user and a part of the user that is set up to wear the glasses frame, the glasses frame being worn by the virtual model.
  • Embodiment 22 The method according to one of the seven preceding embodiments, wherein the reference point on the eye of the user is selected from: a pupil center, a pupillary reflex, a corneal vertex or an eye pivot point.
  • Embodiment 23 Method according to the preceding embodiment, wherein the pupil center, the pupil reflex or the apex of the cornea is determined by evaluating the at least one frontal image of the user and the respective at least one lateral image of the user using image processing.
  • Embodiment 24 The method according to one of the nine preceding embodiments, wherein the at least one viewing direction of the user through the spectacle lens is selected from: a zero viewing direction; a main line of sight; an activity-specific viewing direction of the user, in particular a reading-specific viewing direction of the user; a viewing direction of the user modified by correction values.
  • Embodiment 25 The method according to one of the ten preceding embodiments, wherein the frame edge curve or edge curve is provided in the form of a plurality of data points, the data points being selected from: edge values of the glasses frame or the lens edge frame recorded by measurement, in particular by scanning using a tracer or from a Recording by means of a scanner; Construction data of the glasses frame or the lens rim frame.
  • Embodiment 26 Generic data record for use in a method for producing a spectacle lens, the generic data record comprising at least the following data values:
  • Embodiment 27 Generic data record according to the preceding embodiment, the data values of the generic data record from at least two simultaneously recorded, preferably calibrated, images of the head of a user with an anatomically adapted and attached spectacle frame or from the corresponding two-dimensional rendered recordings of an avatar of the user's head can be generated in one step with virtually adapted and virtually attached spectacle frames.
  • Embodiment 28 Generic data record according to the preceding embodiment, wherein the at least two simultaneously recorded images of the user's head are calibrated to one another.
  • Embodiment 29 Generic data record according to the two preceding embodiments, the at least two simultaneously recorded images being recorded from at least two viewing directions.
  • Embodiment 30 Generic data set according to one of the three preceding
  • the at least two simultaneously captured images include at least one front image and at least one side image of the head of the user with anatomically adapted and attached glasses frame or a two-dimensional rendered image of the avatar of the head of the user with virtually adjusted and virtually attached glasses frame.
  • Embodiment 31 Generic data record according to one of the preceding embodiments 26 to 29, the data values of the generic data record being generated from a three-dimensional virtual model of the head with virtually adapted and virtually put on spectacle frames.
  • Embodiment 32 Generic data set according to one of the five preceding
  • Embodiments in which, when generating the data values of the generic data set, these are calculated completely from the at least two simultaneously captured images of the user's head with the anatomically adapted and attached glasses frame, or from the two-dimensional rendered images of the avatar of the user's head with the virtually adjusted and virtually attached ones Spectacle frames are calculated or taken from the three-dimensional virtual model of the head with virtually adapted and virtually put on spectacle frames.
  • Embodiment 33 Generic data record according to the preceding embodiment, the generation of the data values of the generic data record taking place without iteration.
  • Embodiment 34 Generic data record according to one of the two preceding
  • Selection of data points of the three-dimensional virtual model of the head of the user with virtually adapted and virtually put on glasses frame includes.
  • Embodiment 35 Generic data set according to the preceding embodiment, where at least two data points representing the eyes are taken from the three-dimensional virtual model of the head and at least the data points representing the frame edge curve or edge curve are taken from the three-dimensional model of the virtually adapted and virtually fitted spectacle frame.
  • Embodiment 36 Computer program for generating a data set which is used in a method for manufacturing a spectacle lens for spectacles Computer program is set up to generate the data set, the data set comprising at least the following data values:
  • each of the data values is generated from measured values or from existing data.
  • Embodiment 37 Computer program according to the preceding embodiment, the spatial frame edge curve or edge curve relating to a spectacle frame or a lens edge frame.
  • Embodiment 38 Computer program according to one of the two preceding embodiments, the reference point on the user's eye being selected from; a pupillary center, a pupillary reflex, a corneal vertex or an eye pivot point.
  • Embodiment 39 Computer program according to one of the three preceding
  • the at least one viewing direction of the user through the spectacle lens is selected from: a zero viewing direction; a main line of sight; an activity-specific viewing direction of the user, in particular a reading-specific viewing direction of the user; a viewing direction of the user modified by correction values.
  • Embodiment 40 Computer program according to one of the four preceding
  • the frame edge curve or edge curve is provided in the form of a large number of data points, the data points being selected from: edge values of the glasses frame or the lens edge frame recorded by measurement, in particular by scanning using a tracer or from a recording using a scanner; Construction data of the glasses frame or the lens rim frame.
  • Embodiment 41 Computer program according to one of the five preceding
  • Embodiments where all data values are given in terms of the same spatial coordinate system Embodiment 42.
  • Embodiments in which the data set is generated without iteration are described without iteration.
  • Embodiment 43 Computer program according to any of the preceding seven
  • the data set comprises additional information, wherein the additional information relates to at least one correction of the data values.
  • Embodiment 44 Computer program according to the preceding embodiment, the additional information being included in the data set as at least one further data value.
  • Embodiment 45 Computer program according to either of the preceding two
  • Embodiment 46 Computer program according to any one of the preceding ten
  • correction of the data values comprises at least one of the following correction values:
  • Embodiment 47 Computer-readable storage medium on which a data set which is used in a method for producing a spectacle lens is stored, the data set comprising at least the following data values:
  • Embodiment 48 A method for manufacturing a spectacle lens, the spectacle lens being manufactured by machining a spectacle lens blank, the spectacle lens blank being machined on the basis of centering data, the centering data being determined from a data record, the data record comprising at least the following data values: - spatial coordinates of a reference point on each eye of the user;
  • Embodiment 49 Method according to the preceding embodiment, the spatial frame edge curve or edge curve relating to a spectacle frame or a lens edge frame.
  • Embodiment 50 The method according to one of the two preceding embodiments, wherein a lens type is also included in order to determine the centering data, the lens type relating to the spectacle lens selected by the user.
  • Embodiment 51 Method according to one of the three preceding embodiments, the data record comprising additional information, the additional information relating to at least one correction of the data values.
  • Embodiment 52 Method according to the preceding embodiment, the additional information being included in the data record as at least one further data value.
  • Embodiment 53 Method according to one of the two preceding embodiments, wherein the additional information is included in at least one of the data values of the data set.
  • Embodiment 54 Method according to one of the three preceding embodiments, wherein the correction of the data values comprises at least one of the following correction values:
  • Embodiment 55 The method according to the preceding embodiment, wherein the spatial change in the user's head posture is a change a habitual head posture, a correction of a tilt of the user's head;
  • Embodiment 56 The method according to one of the two preceding embodiments, wherein the change in the vertical coordinate of the at least one visual point comprises a displacement of a stamp figure parallel to the vertical direction of a frame plane of the spectacle frame.
  • Embodiment 57 The method according to one of the nine preceding embodiments, wherein all data values are given in relation to the same spatial coordinate system.
  • Embodiment 58 Method according to one of the ten preceding embodiments, wherein the reference point on the eye of the user is selected from a pupil center, a pupillary reflex, a corneal vertex or an eye pivot point.
  • Embodiment 59 The method according to any one of the eleven preceding embodiments, wherein all data values are given in relation to the same spatial coordinate system.
  • Embodiment 60 Method according to one of the twelve preceding embodiments, the data record being generated without iteration.
  • Embodiment 61 Method according to one of the thirteen preceding embodiments, wherein the data values of the data set are used to determine at least one visual point therefrom.
  • Embodiment 62 Method according to the preceding embodiment, wherein the visual point is determined from an intersection of the user's line of sight through the spectacle lens with a lens plane.
  • Embodiment 63 Method according to one of the three preceding embodiments, wherein the centering data are selected from at least one of the following centering values: - Distance of the corneal vertex of the respective eye to the visual point of a line of sight through the spectacle lens;
  • Embodiment 64 Method according to the preceding embodiment, wherein
  • the at least one spatial direction vector for specifying the at least one viewing direction of the user through the spectacle lens
  • Embodiment 65 The method according to the preceding embodiment, wherein a head inclination is specified as a correction parameter for an axial position of the spectacle lens, the correction parameter being used to correct the centering data or being transmitted in addition to the centering data, the head inclination of the user of the glasses being derived from at least:
  • Embodiment 66 The method according to one of the eighteen preceding embodiments, wherein the production of the spectacle lens takes place regardless of whether the data record is generated from - At least two images of the user with worn and adapted glasses frame, recorded from different viewing directions and calibrated to one another, or
  • Figures 1 A to ID each show schematic representations of a spatial
  • FIG. 2 shows a flow diagram of a preferred exemplary embodiment of a method according to the invention for producing a spectacle lens.
  • FIG. 1A shows a schematic illustration of a spatial arrangement of elements according to the invention within a spatial coordinate system 110 in a plan view.
  • the spatial coordinate system 110 shown here is a Cartesian coordinate system which has the coordinates x, y and z, which are perpendicular to one another.
  • another spatial coordinate system in particular a cylindrical coordinate system, can be used.
  • a spatial coordinate system is characterized by the fact that it becomes a complete description The elements contained therein require three mutually independent values, which are given in the illustration in FIG. 1A by specifying values for the coordinates x, y and z.
  • Each eye 112, 112 ‘of a user has, as shown in FIG. 1A, an eye pivot 114, 114‘ as the center of rotation. For this purpose it is assumed that the eye 112, 112 ‘can move around the eye pivot 114, 114‘ in an eye socket like in a ball joint.
  • Each eye 112, 112 ' also has a pupil 116, 116%, with a data value for the spatial coordinates of a reference point at each eye 112, 112' of the user preferably being able to be determined from a respective pupil center 118, 118 '.
  • a pupillary reflex (not shown) determined by means of image processing from at least one image of each eye 112, 112 ‘of the user can be used. Further reference points on each eye 112, 112 ‘of the user, in particular the eye pivot 114, 114‘ or a corneal vertex, as well as possibilities for their determination are conceivable.
  • a viewing direction 120, 120 'of the user through the spectacle lens starts from the respective eye pivot 114, 114' and crosses the respective associated pupil 116, 116%, in particular the relevant pupil center 118, 118 '.
  • the two viewing directions 120, 120 ‘of the user are directed at infinity 122, 122‘ and parallel to one another.
  • the viewing direction 120, 120 can be a main viewing direction 124, 124 ‘of the user.
  • the user can also have one or more other viewing directions through the spectacle lens, for example a near viewing direction or an activity-specific viewing direction 126, 126 ‘, which is also shown schematically in FIG. 1A.
  • the viewing directions 120, 120 ‘of the user through the spectacle lens and, if applicable, the one or more other viewing directions, for example the activity-specific viewing directions 126, 126, are each specified as a spatial direction vector, as described in more detail above.
  • the viewing directions 120, 120 'of the user through the spectacle lens and, if applicable, the one or more further viewing directions, for example the activity-specific viewing directions 126, 126' can be determined by measurement, preferably by means of the methods and illustrated in WO 2005/069063 A1 Devices.
  • FIG. 1A shows in each case a frame edge curve or edge curve 128, 128 ′ of a spectacle frame (not shown) selected by a user of glasses, which is set up to accommodate two spectacle lenses (not shown).
  • Each of the frame edge curves or edge curves 128, 128 ' here preferably comprises a plurality of data points.
  • each data point of each of the frame edge curves 128, 128 ' can include a metrologically recorded edge value, in particular an inner contour, of the glasses frame, the edge values of the glasses frame being determined from at least one image of the user in which the glasses frame is shown.
  • the data points of the frame edge curves or edge curves 128, 128 'can be measured in an optical measuring laboratory, in particular before the lenses are adapted to the glasses frame selected by the user, preferably by means of an optical recording unit.
  • scanning by means of a tracer or recording by means of a scanner can preferably be used.
  • the data points of the frame edge curves or edge curves 128, 128 'can be selected from design data of a spatial model of the glasses frame, preferably directly from model data of the manufacturer, for example from CAD data.
  • the frame edge curves or edge curves 128, 128 'of full-rim spectacles which have a spectacle frame frame surrounding the two lenses, are shown schematically in FIG. 1A
  • the frame edge curves or edge curves 128, 128' can also be used in a comparable way for half-rim spectacles in which the two Spectacle lenses only partially adjoin a holder, and are produced by frameless glasses in which the spectacle lenses each have a bore for receiving a holder.
  • the data points of the frame edge curves or edge curves 128, 128 ‘can therefore preferably include edge values of the lens edge frame.
  • each data point of the frame edge curves or edge curves 128, 128 'can relate to a selected section of the spectacle frame or the lens edge frame, for example to a specified angular range, preferably 0.25 ° to 10 °, particularly preferably 0.5 ° to 2.5 °, in particular 1 ° to 2 °, the inner contour of the glasses frame.
  • Each of the frame edge curves or edge curves 128, 128 30 to 1500, preferably 36 to 1440, more preferably 144 to 720, in particular 180 to 360, can have data points.
  • FIG. 1A shows the pane planes 130, 130% determined from the frame edge curves or edge curves 128, 128 ', which are used to calculate the centering data for the production of spectacle lenses can be used for the spectacle frame selected by the user of the glasses.
  • the pane planes 130, 130 ' are each formed as flat surfaces approximated to the frame edge curves or edge curves 128, 128', with the frame edge curves or edge curves 128, 128 'generally protruding from the pane planes 130, 130' due to their spatial course.
  • this can also be done for one or more of the further viewing directions, for example for the activity-specific viewing direction 126, 126 ', whereby one or more further visual points 134, 134' can be determined.
  • a respective distance 136, 136 'of the cornea apex of the respective eye 112, 112' to the visual point 132, 132 'of the associated viewing direction 120, 120' which also stood as “corneal apex” or “HSA “, Where the corneal vertex distance represents a centering value comprised by the centering data.
  • FIG. 1B shows a schematic representation of the same spatial arrangement of the elements according to the invention within the spatial coordinate system 110 according to FIG. 1A in a view opposite to the two viewing directions 120, 120 'of the user directed towards infinity 122, 122', which are each from the respective eye pivot 114, 114 '(not shown here) and traverse the respective associated pupil 116, 116%, in particular the relevant pupil center 118, 118'.
  • the visual point 132, 132 '' and, if applicable, the at least one further visual point 134, 134 '' can be determined in each of the pane planes 130, 130 '.
  • a calculation of further centering values comprised by the centering data can be carried out from the respective position of the visual point 132, 132 ′, in particular
  • centering data can preferably include the following additional centering values:
  • the indices L and R designate the left and right directions, the directions being viewed from the perspective of the user of the glasses.
  • FIG. IC which shows a further schematic representation of the same spatial arrangement of the elements according to the invention within the spatial coordinate system 110 according to FIGS. 1A and 1B in a plan view, from the respective position of the visual point 132, 132 'a calculation of further, likewise from the centering data of the centering values included, in particular
  • At least one spatial direction vector for specifying at least one viewing direction 120, 120 'of the user through the spectacle lens; and - A spatial version edge curve or edge curve 128, 128 'of the
  • the centering data can be determined from the specified data values without having to take new measurements on the user and / or the glasses frame.
  • the frame edge curves or edge curves 128, 128 themselves are used and not a projection of the frame edge curves or edge curves 128, 128 ‘onto the pane planes 130, 130‘.
  • FIG. ID shows a further schematic illustration of the spatial arrangement of the user's eyes 112, 112, the viewing direction 120, 120 ‘of the user through the spectacle lens and the frame edge curves or edge curves 128, 128‘ of the spectacle frame 150.
  • the determination of the centering data according to the invention in particular does not require any assumption of symmetrical parameters with respect to the two sides to the right and left of the user and thus the selected spectacle frame 150 and the spectacle lenses to be produced for this.
  • An example of this is that the corneal vertex distances 136, 136 ‘for each of the eyes 112, 112‘ of the user can differ from one another.
  • Another preferred example can have different values for sides A and B of the box system 146, 146 ‘, which in addition to the standard are now for right and left, i.e. for AL and AR and / or for BL and BR, each can assume different values.
  • Another example of this is the above-mentioned change in the axial position of the spectacle lens due to the user's head tilting.
  • FIG. 2 schematically shows a flow diagram of a preferred exemplary embodiment of a method 160 according to the invention for producing a spectacle lens.
  • the correction 162 for the user of the glasses can be determined.
  • a required correction of ametropia of the user of the glasses can be determined, using already known metrologically recorded values, for example from a glasses passport of the user, and / or with an objective refraction of each pupil of the user by performing a Refraction determination can be determined by means of a known refractometer.
  • a selection 164 of the spectacle frame 150 can be made, in particular by the user.
  • the data record according to the invention can be generated 166, the data record, as indicated above, comprising at least the following data values:
  • At least one spatial direction vector for specifying at least one viewing direction 120, 120 ‘of the user through the spectacle lens
  • each of the data values is generated from measured values or from existing data.
  • a virtual model of a section of the user, in particular of the user's head, which is also referred to as an “avatar”, can be used, with at least one glasses frame 150, which is available as a spatial model, being placed on the avatar.
  • a selection 168 of the lens type can be made by the user, wherein the lens selection, as described above, can include the lens type, a refractive index, a tint and at least one coating of the spectacle lenses.
  • the centering data can be determined 170.
  • the centering rule for adapting the lenses to the frame 150 can be determined and then used to manufacture the lenses.
  • the data record generated during method step 166 which includes at least the data values specified above, can be made unchanged for determining 170 the centering data. Regulation 170 the centering data and the determination of the centering rule advantageously take place without iteration by performing a simple, successive sequence.

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  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Optics & Photonics (AREA)
  • Eyeglasses (AREA)

Abstract

La présente invention concerne un enregistrement d'un jeu de données, sauvegardé sur un support d'informations, à employer dans un procédé de fabrication d'un verre de lunettes, un procédé et un programme d'ordinateur pour la génération de l'enregistrement du jeu de données, ainsi qu'un procédé de fabrication du verre de lunettes. Le jeu de données comporte au moins les valeurs de données suivantes : des coordonnées spatiales d'un point de référence au niveau de chaque œil (112, 112') de l'utilisateur ; au moins un vecteur spatial de direction pour indiquer au moins une direction du regard (120, 120') de l'utilisateur à travers le verre de lunettes ; et une courbe spatiale d'un bord de monture ou une courbe de bord (128, 128'). Le présent procédé permet la fabrication du verre de lunettes dès une saisie unique d'un jeu de données pour une adaptation des verres de lunettes à l'utilisateur des lunettes et à la monture de lunettes (150) sélectionnée par l'utilisateur. De ce fait, il est possible ultérieurement d'employer pour les lunettes un autre verre de lunettes que le verre de lunettes sélectionné à l'origine par l'utilisateur sans que, pour l'utilisateur, un autre jeu de données doive être exécuté pour cette adaptation.
EP20706328.0A 2019-03-01 2020-02-28 Enregistrement de données à employer dans un procédé de fabrication d'un verre de lunettes Pending EP3931628A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19160269.7A EP3702831A1 (fr) 2019-03-01 2019-03-01 Ensemble de données destiné à être utilisé dans un procédé de fabrication d'un verre de lunettes
PCT/EP2020/055265 WO2020178167A1 (fr) 2019-03-01 2020-02-28 Enregistrement de données à employer dans un procédé de fabrication d'un verre de lunettes

Publications (1)

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EP3931628A1 true EP3931628A1 (fr) 2022-01-05

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EP19160269.7A Withdrawn EP3702831A1 (fr) 2019-03-01 2019-03-01 Ensemble de données destiné à être utilisé dans un procédé de fabrication d'un verre de lunettes
EP20706328.0A Pending EP3931628A1 (fr) 2019-03-01 2020-02-28 Enregistrement de données à employer dans un procédé de fabrication d'un verre de lunettes

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EP19160269.7A Withdrawn EP3702831A1 (fr) 2019-03-01 2019-03-01 Ensemble de données destiné à être utilisé dans un procédé de fabrication d'un verre de lunettes

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US (1) US20210382330A1 (fr)
EP (2) EP3702831A1 (fr)
CN (1) CN113474719A (fr)
BR (1) BR112021017204A2 (fr)
WO (1) WO2020178167A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4086693A1 (fr) 2021-05-07 2022-11-09 Carl Zeiss Vision International GmbH Procédé, dispositif de traitement et système permettant de déterminer au moins un paramètre de centrage pour aligner des verres de lunettes dans une monture de lunettes sur les yeux d'un utilisateur
CN115758862B (zh) * 2022-10-18 2023-05-30 深圳思谋信息科技有限公司 设备校准方法、装置、计算机设备及计算机可读存储介质

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Publication number Priority date Publication date Assignee Title
CN1910504B (zh) 2004-01-16 2010-09-29 卡尔蔡斯视觉股份有限公司 用于确定眼镜的中心数据的设备和方法
FR2914173B1 (fr) 2007-03-30 2010-02-26 Essilor Int Procede de mesure de la position suivant une direction horizontale du plan sagittal d'un point remarquable d'un oeil d'un sujet
DE102008012268B4 (de) 2008-03-03 2017-09-21 Rodenstock Gmbh Vorrichtung, Verwendung, Verfahren und Computerprogrammprodukt zum dreidimensionalen Darstellen von Darstellungsbilddaten
JP5115751B2 (ja) * 2009-04-07 2013-01-09 株式会社アイメトリクス・ジャパン 眼鏡設計支援装置
DE102011115239B4 (de) * 2011-09-28 2016-02-11 Rodenstock Gmbh Bestimmung der Scheibenform unter Berücksichtigung von Tracerdaten
FR2980681A3 (fr) 2011-09-29 2013-04-05 Fittingbox Procede de determination des mesures oculaires et optiques d'interet pour la fabrication et le montage de verre de lunettes correcteurs, a l'aide d'une camera en contexte non controle
DE102016113374B3 (de) * 2016-07-20 2017-10-26 Carl Zeiss Vision International Gmbh Fern-Durchblickpunkt-Bestimmung für ein Brillenglas
DE102014012452A1 (de) * 2014-08-21 2016-02-25 Rodenstock Gmbh Ermittlung von Benutzerdaten unter Berücksichtigung von Bilddaten einer ausgewählten Brillenfassung
DE102016106121A1 (de) * 2016-04-04 2017-10-05 Carl Zeiss Ag Verfahren und Vorrichtung zum Bestimmen von Parametern zur Brillenanpassung
DE102016004430A1 (de) * 2016-04-12 2017-10-12 Rodenstock Gmbh Verfahren zum Bestimmen von optischen Parametern eines Probanden und Computerprogrammprodukt zum Durchführen des Verfahrens
EP3355104B2 (fr) 2017-01-27 2022-06-01 Carl Zeiss Vision International GmbH Procédé et dispositif ainsi que programme informatique destinés à déterminer une représentation d'un bord de verre de lunettes
EP3422087B1 (fr) * 2017-06-28 2019-12-25 Carl Zeiss Vision International GmbH Procédé de correction de paramètres de centrage et/ou d'une position d'axe et programme informatique correspondant et procédé
EP3425446B1 (fr) * 2017-07-06 2019-10-30 Carl Zeiss Vision International GmbH Procédé, dispositif et programme d'ordinateur destinés à l'adaptation virtuelle d'une monture de lunettes

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Publication number Publication date
EP3702831A1 (fr) 2020-09-02
CN113474719A (zh) 2021-10-01
WO2020178167A1 (fr) 2020-09-10
US20210382330A1 (en) 2021-12-09
BR112021017204A2 (pt) 2021-12-14

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