EP3207423A1 - Procédé de détermination par mesure précise de paramètres optiques-physionomiques d'un patient pour l'adaptation de verres de lunettes au patient en cas de myopie - Google Patents

Procédé de détermination par mesure précise de paramètres optiques-physionomiques d'un patient pour l'adaptation de verres de lunettes au patient en cas de myopie

Info

Publication number
EP3207423A1
EP3207423A1 EP15823492.2A EP15823492A EP3207423A1 EP 3207423 A1 EP3207423 A1 EP 3207423A1 EP 15823492 A EP15823492 A EP 15823492A EP 3207423 A1 EP3207423 A1 EP 3207423A1
Authority
EP
European Patent Office
Prior art keywords
subject
situation
spectacle
values
physiognomic
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.)
Withdrawn
Application number
EP15823492.2A
Other languages
German (de)
English (en)
Inventor
Hans-Joachim Ollendorf
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP3207423A1 publication Critical patent/EP3207423A1/fr
Withdrawn legal-status Critical Current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 invention relates to a method for measuring accurate determination of optical-physiognomic parameters of a subject to adapt eyeglass lenses on the subjects for the near vision situation according to the preamble of claim 1 and a method for accurate measurement for the determination of opto-physiognomic parameters of a subject Adaptation of spectacle lenses to the subject by means of a mobile video centering system according to the preamble of claim 11.
  • a method for the accurate determination of optic-physiognomic parameters of a subject for the adaptation of spectacle lenses to the subject for the near vision situation as well as stationary and mobile video centering systems for the determination of optic-physiognomic parameters of a subject are already state of the art.
  • a centering arrangement which consists of a single-lens reflex camera with flashlight, a Justier convention, an eyepiece and a variable-length, lockable spacer.
  • the spacer is provided with a pivotable arcuate support member.
  • the centering is applied to the forehead of the subject.
  • the optical axis of the camera lens is aligned centrally to the face by means of a light spot generated by the adjustment light on the subject's face. Then the eyepiece is turned on, the light beam is passed through the prism system of the mirror reflector of the camera to the lens so that it is briefly visible as a fixation light spot for the subject.
  • the position of the fixing light spot is identical to the position of the camera lens. At the moment of the subject's perception of the fixation light spot, his eyes focus on that point with the convergence corresponding to the set distance. At that moment, the flash is triggered and the image of the eye area of the subject with spectacle frame recorded. On the image of the eye area, the pupil of each eye has a flash reflex.
  • the distance between the two flash reflexes is exactly equal to the pupil distance for the set sight distance. With this measured value and taking into account the corneal vertex distance HSA and a correction factor, the viewing points for the near vision situation can be determined (DE 298 03 121 U1).
  • the disadvantage of this measurement arrangement is that the test person still experiences the measurement situation as a physical impairment by applying the spacer to his forehead.
  • the optician is burdened with the handling of the measuring arrangement not insignificant manually.
  • a disadvantage is also the artificial measurement situation, which deviates from a natural reading situation in that the reading distance is determined by the position of a camera.
  • the markers are detected by a camera and fed to a computer, which determines from these the actual value of the shooting distance on the basis of which the values of the position of the interpupillary distance are determined.
  • the correction calculation of the convergence is made on the basis of the relationship between the object size and its image size in terms of the marks on the monitor (EP 1 450 201 B1).
  • a video centering system for determining centering data for spectacle lenses which consists of at least one horizontally, vertically and angularly adjustable camera and integrated in a common mobile housing image processing unit with computer and control unit and has a position and acceleration sensor. On the front of the case optotypes are displayed, on the back of a screen for repeating the captured by the camera image is arranged.
  • the method for determining centering data for spectacle lenses by means of the video centering system, which optically captures and processes the information required for determining the centering data from a subject and a spectacle frame selected therefrom or for this, additional sighting lines are obtained in different viewing situations of the subject in relation to the spectacle frame determined.
  • the video centering system is brought automatically or by an operator into the characteristic position for the gaze situation and after checking and, if necessary, correcting the position, the camera is triggered (DE 10 2011 009 646 A1).
  • a mobile video centering system for determining centering data for spectacle lenses which corresponds in basic construction to the aforementioned video centering system, consists of a tablet PC having a display a position sensor and an image capture device on one of the two vertical edge regions of the side facing away from the display.
  • This side of the tablet PC is provided with an objective extending from the lens of this image capture device at least to the middle of the tablet PC optical attachment having an outlet opening, which is located in the plane of the vertical center of this side of the tablet PC.
  • In the optical attachment is a periscope and between the deflection mirrors a the Focal length of the lens of the image capture device magnifying lens system arranged (DE 20 2012 000 167 U1).
  • an in situ video centering system with visual field evaluation of a subject for determining centering data of a pair of glasses with an imaging unit, a camera unit and a software evaluation unit for the video recordings.
  • the imaging unit for example a screen, is arranged at the head height of a subject.
  • At the right and left side at least one camera is arranged, not perceptible to the subject.
  • a method for measuring at least one geometrical-physiognomic parameter for positioning a spectacle frame of spectacles on the face of a spectacle wearer with regard to the insertion and / or the personalized computation of the correction lenses attributable to this frame, in which initially a substantially frontal digital image of the face of the spectacle wearer is recorded by means of an image pickup device.
  • the geometric-physiognomic parameter is calculated by the evaluation of the image, wherein the calculation starts from a predetermined distinctive point of the face of the spectacle wearer or the spectacle frame and takes into account a size which is representative of the absolute viewing angle which a viewing line, which connects the lens of the image pickup device and the distinctive point, with their projection on a horizontal plane.
  • the spectacle wearer must sit or stand with the head held straight, thus looking essentially in the horizontal direction, to perform the image recordings (US 2010/0195045 A1).
  • a method for assessing a reference position of a subject for determining parameters for the production of a pair of glasses is known.
  • reference positions of the subject's head in close vision which carries a spectacle frame with a sighting device, are recorded photographically in deviation from a target reference position.
  • the relevant parameters are calculated from the recorded images.
  • the publication also shows a system for assessing a subject's reference posture comprising a portable data acquisition device having an image capture device and a display. On the display, a text is displayed which the subject reads, turning his head to the left and right and moving up and down while following the text.
  • the calculation of the parameters relevant to the near-sighted situation takes place from the images taken (US 2014/0148707 A1).
  • the disadvantage of this method is that the subject must read a text and turn his head to track the text. Since the images are taken at different head position, the method also requires a longer measurement time.
  • the invention is therefore an object of the invention to provide a method for measuring accurate determination of optical-physiognomic parameters of a subject to adapt a pair of glasses in the viewing situation proximity, such as is present when reading, for the subject to develop a short measuring time and requires little activity from both the operating optician and the subject.
  • an additional object of the invention in the combination of the provision of the invention of optic-physiognomic parameters of a subject for the adaptation of spectacle lenses to the subjects for the nearsightedness situation with the methods and devices of the measurement of the gaze situation which are known from the prior art using the video center systems described there, for example according to EP 1 450 201 B1, DE 10 2011 009 646 A1 or DE 20 2012 000 167 U1, in order to increase the accuracy of the adaptation of the lenses to the subject as well as the spectacle frame selected by this or a third party.
  • the inventive method for measuring accurate determination of optical physiognomic parameters of a subject to adapt eyeglass lenses on the subject for the near vision situation with the features of claim 1 has the advantage that it significantly simplifies the determination of the centering of the glasses in the viewing situation proximity.
  • the measuring procedure runs automatically, without that the required measuring arrangement affects the subject in any way. He just needs to take a natural reading attitude and concentrate on an optical signal appearing in his line of sight at reading distance. It is not necessary to turn the head.
  • a further advantage of the invention is that measured values can be made available with the method of the spectacle lens manufacturing industry and its glass designers, with which it is possible to individually adapt the spectacle lens design to the spectacle wearer even in close proximity. So far, the glass design has been designed according to standard assumptions, for example an inset of 1.5 mm, in the absence of corresponding measured values at close range.
  • An additional advantage of the invention is now also the prismatic effect of the lenses on the eye position of the wearer, after which they are ground into the socket to take into account. This problem occurs especially at close range.
  • the reading distance is usually determined by the optician in an upstream operation in the eyeglass determination (refraction).
  • Another essential condition of the reading situation is the viewing direction. This in turn is to be determined or animate in relation to the head direction.
  • the convergence and the viewing direction itself must be taken into account. The convergence is realized, on the one hand, as explained above, the reading distance is maintained and, secondly, the viewing-side concentration of both eyes is directed to the central optical signal.
  • the determination of the convergence and thus both the calculation of the so-called near-PD and the glass viewing points at different elevation-side viewing directions is possible in that the optical signal in succession in at least two different reading heights is generated so that the viewing direction of the subject's eyes is automatically guided in different vertical viewing angles.
  • the optical signals are generated in a vertical.
  • the distance between the subject's face and the image recording device is displayed in real time, so that it is easily possible for the optician to set the intended reading distance by changing the distance between the display and the subject.
  • This additional function of the image recording device also shortens the measuring process.
  • the measured values can be determined as average values from at least two or more different reading heights.
  • the optical signal is coupled to the trigger of the electronic image recording device.
  • an adjustable duration of the provision of the optical signal or, for example, a flashing optical signal after a certain preset by the optician number of flashing the image pickup device are automatically triggered.
  • This automation of the measuring process also animates the test subjects to assume the desired viewing situation independently and undisturbed.
  • the image pickup device is combined with or in a display on which the optical signal is generated.
  • a laptop or a tablet PC can thus take over the task of image generation and reproduction of the optical signal.
  • this combination has the advantage that the subject sees himself in the display.
  • this function is to bring the subject before the actual measurement process close. This is made possible by the use of one or more training runs in which the test person can observe the optical signal without taking pictures.
  • auxiliary device for determining the position to determine the parameters for the near-sighted situation, which is arranged on the spectacle frame of the subject. This is particularly advantageous if the determination of the parameters for the near-vision situation has already been preceded by measurement runs in which such an auxiliary device, for example a sight-measuring yoke according to FIG. EP 2 462 481 B1.
  • a particularly advantageous procedure in the determination of optic physiognomic parameters for the near vision situation is to measure the "near" viewing situation first with the subject's previous spectacles (1), then measuring the "proximity” viewing situation with the new spectacle frame (2 ) without spectacle lenses and finally to calculate the determined with the previous glasses of the subject in the situation of "proximity” physiognomic values of the subject in the calculated values of the new, not yet equipped with eyeglass lenses frame into it.
  • the measured values "near PD" or “near PD right” and “near PD left” and “inset” or the measured values “mono inset right” and “mono-inset links” in each case referred to the glass plane provided as mean values of the measured values from the perspective situation "proximity", where PD denotes the pupillary distance and mono-inset the average horizontal distance. Shifting of the glass point of view of an eye inwards through the convergence when changing from the gaze situation Distance into the gaze situation represents nearness.
  • the inventive method for measuring accurate determination of optical physiognomic parameters of a subject to adapt eyeglass lenses on the subject by means of a mobile Videozentriersystems with the features of claim 11 has the advantage that it is to determine the centering of the glasses in the viewing situation near only an immediate continuation the Zentrier schemesar in the line of sight distance needs.
  • This method is particularly advantageous in connection with the use of the mobile video centering system for the determination of centering data for spectacle lenses according to DE 20 2012 000 167 IM, since in this case no device-specific conversion or no noteworthy equipment-related additional effort is necessary.
  • the detachably arranged on the tablet PC for example, magnetically held optical attachment is removed and the tablet PC in a conventional manner with the display display in the direction of the subject on an example commercial table holder stand placed so that the subject sees himself in the display of the tablet PC through the activated front camera.
  • the conditions described above for the method according to claim 1, that is to say the near vision situation are to be observed.
  • the determination of the head direction is to be evaluated in relation to the head direction of the measurement situation remotely.
  • both the measurement situation distance and the measurement situation proximity are carried out with the same and also anatomically adjusted version and the same and also the same measuring base Visiermessbügel, the head orientation of the subject in both measurement situations can be related to each other become.
  • the problem of taking into account the prismatic effect of the spectacle lenses on the eye position of the spectacle wearer in the near range is solved by first performing a complete measurement of the gaze situation distance and the gaze situation with the previous goggles of the spectacle wearer.
  • the relative changes of the wear values and / or the physiognomic values of the spectacle wearer during the change between the eye distance and the vision situation with the previous spectacles are then included in the determined values of the new spectacle frame not yet equipped with spectacle lenses.
  • the inventive method according to claim 11 proceeds in the presence of the subject as follows:
  • a video centering device in which the method according to the invention can be carried out is described below.
  • 1st measurement run previous glasses The subject is with his anatomically well adjusted previous eyeglasses in front of a video centering system, preferably the mobile video centering system according to DE 20 2012 000 167 111.
  • the well-adjusted spectacles remain together with the measuring base, preferably the visor measuring rod according to EP 2 462 481 B1, without changes on the subject's head.
  • the special optics of the mobile video centering system is separated from the system by the optician and the remaining tablet PC placed on a possibly commercial workplace stand such that the display shows the wearer and this, recorded by the activated front camera on the display, preferably approximately in the middle as livestream shown, can see.
  • the live image of the distance between the display and the eye area of the subject allows the optician to set the previously otherwise optimal reading distance by moving the stand with the tablet PC.
  • the optician conveys to the wearer the need to direct his gaze to the red-lighted point.
  • the subject can concentrate undisturbed on the red-lighted point. This illuminates at the same height, for example, each 3 times, with the last illumination automatically a recording of the spectacle wearer is made by the front camera. After that, the red spot, for example, lights up in the next, now medium, height of the image area, likewise with an automatic recording at the last illumination.
  • This entire recording process with the images in different viewing direction height can be repeated automatically in a pre-set by the optician number, repetitions increase the statistical reliability of the measured values.
  • the additional measured values of the proximity view are determined on the software side with the aid of the already determined measured values of the far-away perspective.
  • the information of the spatial depth for example the value of the corneal vertex distance from the measurement gaze situation distance, in the calculation of the measured values of the gaze situation proximity.
  • the subject is with his anatomically well adapted new spectacle frame in which no lenses are mounted with optical effect, in front of a video centering system, preferably the mobile video centering system according to DE 20 2012 000 167 U1.
  • the relative changes of the centering values or the physiological values of the spectacle wearer which were determined by the change from the far-sighted view to the near-eye viewing position, are entered in the centering values of the new version into expected.
  • the measured values determined are provided for the use of the spectacle lens centering or made available to the spectacle lens manufacturer for individual glass design. 3. Measuring cycle new spectacle frame without spectacle lenses without consideration of the prismatic effect in the eye situation
  • the measurement procedure is carried out completely as described in 1. "Measurement run previous glasses" with the new spectacle frame without spectacle lenses, the determined measured values are provided directly for the use of the spectacle lens centering or made available to the spectacle lens manufacturer for individual glass design.
  • FIG. 4 shows a recording of the measurement situation from FIG. 3 with top view animation and the resulting eye position, FIG.
  • FIG. 5 shows a spectacle wearer visible display representation with gaze animation
  • FIG. 6 shows a recording of the measurement situation from FIG. 5 with the center of the visual animation and the resulting eye position
  • Fig. 1 and 2 show the basic representation of a mobile video centering system used for carrying out the method according to the invention in a side view.
  • a subject 1 sits with his selected and anatomically well-adapted spectacle frame 2, on which a Visiermessbügel 3 is arranged in the present example, in front of a tablet PC 4, placed in a commercial table stand 5 on a table level 6 and with a the inventive Procedure appropriate software is equipped.
  • the tablet PC 4 On the display side, the tablet PC 4 is equipped with a front-side camera 7, which, like its display itself, is aligned with its optical axis 8 on the subjects 1. Their reception area limits are marked with the reference number 9.
  • electronic image recording device and the data processing device are housed.
  • the distance of the tablet PC 3 is aligned by moving the table stand 5 to a reading distance 10 of the subject 1 (FIG. 2).
  • FIG. 3 a first viewing situation shown in FIG. 3, the subject 1 directs his eyes along an upper viewing direction 14 (FIG. 1) to the look-up animation mark "up" 11.
  • a recording of the subject 1's face to be measured is performed automatically by the software 7.
  • the image resulting from this viewing situation is reproduced in Fig. 4.
  • a measurable distance 15 of the right pupil 16 to a right upper fascia is shown.
  • Sung edge 17 of the spectacle frame 2 marked by a small double arrow.
  • the evaluating software determines the opto-physiognomic parameters in three viewing situations and places them in relation to one another and / or in relation to the opto-physiognomic parameters in the viewing situation Distance.
  • the measured values "x R" and "x L” are respectively provided, based on the glass plane, as average values of the measured values from the viewing situation "proximity".
  • the measurements of the grinding parameters of the spectacle lenses taking into account the viewing situation near the measured values "x R" and "x L” respectively with respect to the glass plane as the mean values of the measured values from the view close up (1), center (2), bottom (3), y and x (glass plane), respectively.
  • the following measured values are determined, for example:
  • Pupillary distance (PD) in each case above, middle and below with the respectively associated vertical viewing angle deviating from the zero-viewing direction.

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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

L'invention concerne un procédé de détermination par mesure précise de paramètres optiques-physionomiques d'un patient (1) pour l'adaptation de verres de lunettes au patient (1) en cas de myopie, au moyen d'un dispositif électronique de prise de vues (7) et d'un dispositif de traitement de données (4), le dispositif électronique de prise de vues (7) étant érigé au centre en face du patient (1) dans une position de lecture, au moins la zone du visage du patient (1) présentant la monture de lunettes (2) étant enregistrée par photographie par le dispositif électronique de prise de vues (7) et étant calculée par évaluation de l'image prise de manière frontale des paramètres physionomiques-géométriques. Selon l'invention, au moins deux signaux optiques (11, 12, 13) sont générés, successivement dans le temps et à différentes hauteurs de lecture, entre le visage et le dispositif de prise de vues (7) dans le plan vertical qui passe par l'axe optique (8) du dispositif de prise de vues (7) de manière telle que la direction du regard se dirige sur les signaux optiques (11, 12, 13); le dispositif de prise de vues (7) est déclenché après fixation réussie des yeux sur le signal optique (11, 12, 13) à la hauteur de lecture respective et au moins un paramètre pertinent pour le cas de myopie eu question est calculé à partir des au moins deux images.
EP15823492.2A 2014-10-18 2015-10-16 Procédé de détermination par mesure précise de paramètres optiques-physionomiques d'un patient pour l'adaptation de verres de lunettes au patient en cas de myopie Withdrawn EP3207423A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014015345.2A DE102014015345A1 (de) 2014-10-18 2014-10-18 Verfahren zur messgenauen Bestimmung von optisch-physiognomischen Parametern eines Probanden zur Anpassung von Brillengläsern an den Probanden für die Nahsichtsituation
PCT/DE2015/000513 WO2016058583A1 (fr) 2014-10-18 2015-10-16 Procédé de détermination par mesure précise de paramètres optiques-physionomiques d'un patient pour l'adaptation de verres de lunettes au patient en cas de myopie

Publications (1)

Publication Number Publication Date
EP3207423A1 true EP3207423A1 (fr) 2017-08-23

Family

ID=55129366

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15823492.2A Withdrawn EP3207423A1 (fr) 2014-10-18 2015-10-16 Procédé de détermination par mesure précise de paramètres optiques-physionomiques d'un patient pour l'adaptation de verres de lunettes au patient en cas de myopie

Country Status (5)

Country Link
EP (1) EP3207423A1 (fr)
KR (1) KR20170073630A (fr)
CA (1) CA2963584C (fr)
DE (1) DE102014015345A1 (fr)
WO (1) WO2016058583A1 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR86977E (fr) * 1964-12-07 1966-05-20 Lunetiers Cottet Poichet Soc D Mensurateur photographique
FR2766043A1 (fr) * 1997-07-09 1999-01-15 Briot Int Systeme video d'aide a la vente pour opticiens
DE29803121U1 (de) 1998-02-21 1998-06-25 Geldmacher Horst Anordnung zum Zentrieren und Anpassen von Brillengläsern
DE502004010054D1 (de) 2003-02-22 2009-10-29 Hans-Joachim Ollendorf Verfahren zur Ermittlung des Pupillenabstandes
FR2915290B1 (fr) 2007-04-18 2009-07-03 Essilor Int Procede de mesure d'au moins un parametre geometrico- physionomique d'implantation d'une monture de lunettes de correction visuelle sur le visage d'un porteur
DE102009036243A1 (de) 2009-08-05 2011-02-17 Ollendorf, Hans-Joachim Visiermessbügel zur Bestimmung des Fassungsscheibenwinkels einer Brille
FR2952517B1 (fr) * 2009-11-13 2012-07-20 Essilor Int Procede et dispositif de mesure automatique d'au moins une caracteristique de refraction des deux yeux d'un individu
DE102010015795A1 (de) 2010-04-20 2011-10-20 Hans-Joachim Ollendorf Videozentriersystem mit Gesichtsfeldbewertung
FR2961591B1 (fr) * 2010-06-21 2013-05-31 Interactif Visuel Systeme I V S Procede d'estimation de la posture d'un sujet.
DE102011009646B4 (de) 2011-01-27 2018-02-08 Hans-Joachim Ollendorf Videozentriersystem und Verfahren zur Bestimmung von Zentrierdaten für Brillengläser
DE202012000167U1 (de) 2012-01-10 2012-02-24 Hans-Joachim Ollendorf Mobiles Videozentriersystem zur Bestimmung von Zentrierdaten für Brillengläser
FR2992843B1 (fr) * 2012-07-06 2016-05-06 Essilor Int Dispositif et procede de mesure de refraction oculaire objective et d'au moins un parametre geometrico-morphologique d'un individu

Also Published As

Publication number Publication date
WO2016058583A1 (fr) 2016-04-21
KR20170073630A (ko) 2017-06-28
CA2963584A1 (fr) 2016-04-21
DE102014015345A1 (de) 2016-04-21
CA2963584C (fr) 2023-01-03

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