EP0775334A1 - Procede de determination de donnees concernant le bord d'un verre de lunettes - Google Patents

Procede de determination de donnees concernant le bord d'un verre de lunettes

Info

Publication number
EP0775334A1
EP0775334A1 EP95927618A EP95927618A EP0775334A1 EP 0775334 A1 EP0775334 A1 EP 0775334A1 EP 95927618 A EP95927618 A EP 95927618A EP 95927618 A EP95927618 A EP 95927618A EP 0775334 A1 EP0775334 A1 EP 0775334A1
Authority
EP
European Patent Office
Prior art keywords
data
computer
fax
transmitted
sheet
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Withdrawn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
EP95927618A
Other languages
German (de)
English (en)
Inventor
Lutz Gottschald
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.)
Wernicke and Co GmbH
Original Assignee
Wernicke and Co 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 Wernicke and Co GmbH filed Critical Wernicke and Co GmbH
Publication of EP0775334A1 publication Critical patent/EP0775334A1/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Withdrawn legal-status Critical Current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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
    • B24B9/14—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/60—Analysis of geometric attributes

Definitions

  • the invention relates to a method for determining the edge data of a spectacle lens according to the preamble of claim 1.
  • tracers have been used in practice for this purpose. With these tracers, a stylus scans the frame or the associated lens.
  • these tracers are comparatively expensive, so that their purchase is not particularly worthwhile for small optician shops, since in smaller shops there is often no need for the use of a tracer for several weeks.
  • the tracers from different manufacturers output the measurement results in different data formats, so that the numerical data records obtained can often not be used as order data records for different spectacle lens manufacturers.
  • the picture of the version thus produced is obviously digitally captured and closed with a special digitizer transmitted to a computer via a line, which can be, for example, a telephone line.
  • a line which can be, for example, a telephone line.
  • the boundary data determined by the computer from the transmitted digital data are used to control the actual boundary device.
  • the invention is based on the object of developing a method for determining the edge data of a spectacle lens in accordance with the preamble of patent claim 1 in such a way that the edge data can be determined by the optician in a form which enables the edge data to be passed on to any manufacturer and so that ordering from any manufacturer is possible without the optician would need a device that was specifically purchased to determine the order data.
  • the invention is based on the basic idea that practically every optician shop currently has a fax machine. The reason for this is that most of the suppliers of spectacle lenses have switched from the previous telephone order acceptance to fax errors to fax order acceptance.
  • This fax machine which is customary in the trade and is not necessarily supplemented by any additional options, is now used according to the invention to record the contour of the spectacle frame or of the shaped or measuring disk in a "numerically usable" manner.
  • a picture of the inner contour of the frame or the shaped disk is first made on a scale of 1: 1.
  • This picture can be produced in any way and in particular by placing the frame on a sheet of paper and then the outer or inner contour of the frame or the outer contour of the shape or measuring disk of the frame with a drawing pen, such as a pencil , a ballpoint pen or the like.
  • the error-free bypassing of the contour of the frame or the disk is facilitated by the use of a pin attached to a so-called cranesbill.
  • a pin attached to a so-called cranesbill By guiding the pen on the cranesbill, which ensures the "straight position" of the pen, errors are avoided, such as can occur “by hand” when moving around the holder or disk.
  • the viewpoint is additionally drawn into the image of the version and is evaluated by the computer. In this way, the supplier receives all the information required for the edging of a spectacle lens in a numerically evaluable form, the special "fax data format" (tif) used worldwide not being used for the transmission.
  • the image is then transmitted with this fax machine to a receiver station which stands for the spectacle lenses at the supplier.
  • the fax data are read in by the supplier in a computer which determines the data required for the respective order from the fax data.
  • a scale is also transmitted to calibrate the transmitted data.
  • This scale can be, for example, an "axis cross" with known dimensions. It is therefore irrelevant, for example, if the fax machine in the optician's shop enlarges or reduces the scanned sheet for transmission.
  • the additional order data such as the spherical effect of the spectacle lens and possibly the cylindrical effect, can of course also be found and axis position of the cylinder axis or, in the case of progressive lenses, the addition, the material of the lens, given if the tint of the glasses, anti-reflective layers etc. are available.
  • This order data can then be evaluated manually - by entering data into a computer - or preferably by means of an OCR method or a direct evaluation method (claim 3):
  • the procedure according to the invention has the advantage that the data are created by the optician independently of a special data system at the supplier, since the image of the frame is transmitted by the standardized fax transmission system without reference to a special numerical data system.
  • the transmitted image data representing an "analog image" is only evaluated at the supplier.
  • the computer determines the minimum required diameter of the tubular spectacle lens (claim 5).
  • the computer calculates from the transmitted fax data the minimum diameter of the spectacle lens required for a certain version and given viewing points; the computer can also carry out a center thickness optimization with the fax data (claim 6) and / or calculate the edge data for a edge device (claim 7).
  • the computer it is also possible for the computer to control the edging device directly (claim 15), so that the supplier delivers to the optician business already rimmed spectacle lenses which only have to be inserted there into the frame. This further reduces the equipment required in the optician business.
  • edge data calculated by the computer may be entered off-line - for example by sending a diskette to the optician - into the edge device at the optician (claim 14).
  • the optician only needs a sheet of paper - possibly with a printed or subsequently applied scale and optional ordering options - and a commercially available fax machine, which does not have to have any special features.
  • the supplier In addition to a computer with a suitable program, the supplier also requires only a commercially available fax machine and an evaluation unit for fax printing or a commercially available computer fax card.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Ophthalmology & Optometry (AREA)
  • Optics & Photonics (AREA)
  • Geometry (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Eyeglasses (AREA)

Abstract

L'invention concerne un procédé de détermination des données concernant le bord d'un verre de lunettes, ledit procédé comprenant les étapes suivantes: on réalise tout d'abord, sur une feuille, un dessin du contour intérieur de la monture ou d'un gabarit à l'échelle 1:1, en suivant avec un crayon les contours de la monture ou du gabarit. On marque ensuite les points définissant le calibre, sur la feuille, à l'intérieur du dessin de la monture, puis on scanne le dessin de la monture comportant les points définissant le calibre, avant de transférer, par l'intermédiaire d'une ligne téléphonique, les données scannées vers un ordinateur qui détermine les données de contours. Ce procédé est caractérisé en ce qu'il utilise, pour la transmission des données, un télécopieur standard transmettant la feuille de façon usuelle à une station réceptrice, et en ce que les données du télécopieur reçues par la station réceptrice sont introduites dans un ordinateur qui détermine les données de contours à partir des données transmises par télécopie.
EP95927618A 1994-08-01 1995-08-01 Procede de determination de donnees concernant le bord d'un verre de lunettes Withdrawn EP0775334A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4427071A DE4427071A1 (de) 1994-08-01 1994-08-01 Verfahren zur Ermittlung von Randungsdaten
DE4427071 1994-08-01
PCT/DE1995/000995 WO1996004596A1 (fr) 1994-08-01 1995-08-01 Procede de determination de donnees concernant le bord d'un verre de lunettes

Publications (1)

Publication Number Publication Date
EP0775334A1 true EP0775334A1 (fr) 1997-05-28

Family

ID=6524557

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95927618A Withdrawn EP0775334A1 (fr) 1994-08-01 1995-08-01 Procede de determination de donnees concernant le bord d'un verre de lunettes

Country Status (4)

Country Link
EP (1) EP0775334A1 (fr)
CA (1) CA2196280A1 (fr)
DE (1) DE4427071A1 (fr)
WO (1) WO1996004596A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19642171A1 (de) * 1996-10-12 1998-04-30 Wernicke & Co Gmbh Verfahren zum Ermitteln und Übertragen von Umfangsdaten eines formzuschleifenden Brillenglases
DE19804542C5 (de) 1998-02-05 2009-04-30 Wernicke & Co Gmbh Verfahren und Vorrichtung zum Bearbeiten von Brillengläsern
US9236024B2 (en) 2011-12-06 2016-01-12 Glasses.Com Inc. Systems and methods for obtaining a pupillary distance measurement using a mobile computing device
US9483853B2 (en) 2012-05-23 2016-11-01 Glasses.Com Inc. Systems and methods to display rendered images
US9311746B2 (en) 2012-05-23 2016-04-12 Glasses.Com Inc. Systems and methods for generating a 3-D model of a virtual try-on product
US9286715B2 (en) 2012-05-23 2016-03-15 Glasses.Com Inc. Systems and methods for adjusting a virtual try-on

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0092364A1 (fr) * 1982-04-14 1983-10-26 The Hanwell Optical Co. Limited Méthode et appareil pour façonner un verre de lunettes pour l'emboîter dans une monture
DE3817850A1 (de) * 1988-05-26 1989-12-07 Loh Kg Optikmaschf Verfahren fuer die gewichtsminimierung von brillenglaesern
US5231510A (en) * 1991-04-22 1993-07-27 Worthington Cristian A Information retrieval system utilizing facsimile communication and paper forms with preset format
US5257198A (en) * 1991-12-18 1993-10-26 Schoyck Carol G Van Method of transmitting edger information to a remote numerically controlled edger

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9604596A1 *

Also Published As

Publication number Publication date
CA2196280A1 (fr) 1996-02-15
WO1996004596A1 (fr) 1996-02-15
DE4427071A1 (de) 1996-02-08

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