EP1981394A1 - Vorrichtung zum messen des winkels zwischen weitsicht und kurzsicht bei einem brillenpatienten - Google Patents
Vorrichtung zum messen des winkels zwischen weitsicht und kurzsicht bei einem brillenpatientenInfo
- Publication number
- EP1981394A1 EP1981394A1 EP07731549A EP07731549A EP1981394A1 EP 1981394 A1 EP1981394 A1 EP 1981394A1 EP 07731549 A EP07731549 A EP 07731549A EP 07731549 A EP07731549 A EP 07731549A EP 1981394 A1 EP1981394 A1 EP 1981394A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- patient
- vision
- angle
- pair
- sight
- 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.)
- Ceased
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
- A61B3/024—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for determining the visual field, e.g. perimeter types
-
- 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
-
- 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
Definitions
- the present invention relates to a device for measuring the angle ⁇ formed between a first position, corresponding to a distance vision, of a patient wearing a pair of glasses, and a second position, corresponding to a near vision.
- FIG. 1 shows a pair of spectacles comprising such corrective lenses.
- Each corrective lens 2 comprises a first zone 4 which occupies the upper part and the lateral parts of the corrective lens and a second zone 6 which occupies the central lower part of the corrective lens.
- the first zone is that used by the patient in far vision, while the second zone is used in close vision.
- These two zones are generally separated by an intermediate zone, called the progression channel, not shown in the figure.
- Close vision means a vision less than about 80 cm, and in particular of the order of 40 cm, that is to say the vision used to read a document held by the patient in his hands.
- the distance d between the upper limit of the corrective lens and the upper limit of the second zone 6 varies according to the patients.
- the optician asks the patient to look away and then look upwind and he notes the difference in position of the patient's glasses between the two visions, that is to say the amplitude of the vertical head movement. of the patient between the two visions.
- the angular difference ⁇ between these two positions allows the optician to know the value of the appropriate distance d for the patient.
- a disadvantage of the prior art is that the position of the glasses in far vision is determined only very imperfectly. Indeed, the optician who asks the patient to fix his gaze in the distance does not know exactly what the patient is looking at. He may have his eyes attracted by a particular object, the position of which does not correspond exactly to a vision from a distance. This results in uncertainty about the proper position of the glasses in far vision, resulting in inaccuracy on the value of the distance d. This entails a lack of comfort for the patient who is obliged to adjust (move) the pair of glasses when he passes from a distance vision to a near vision or vice versa.
- the aim of the invention is to overcome the disadvantages of the prior art and to propose a device making it possible to measure the angle ⁇ more precisely, and thus to provide the patient with corrective lenses whose limit of the first and second zones is adapted to the vision of it.
- the present invention thus relates to a device for measuring the angle ⁇ formed between a first position, corresponding to a distance vision, of a patient wearing a pair of glasses, and a second position, corresponding to a near vision, said device comprising gripping means capable of grasping the orientation of the pair of spectacles in each of the two positions, and processing means for determining the angle ⁇ as a function of said orientations, this device further comprising a visual reference element to define the patient's attitude for distance vision measurement.
- the visual reference element makes it possible to accurately determine the first position, and therefore the angle ⁇ between the positions corresponding to the far and near visions.
- the device comprises a positioning element which, during a measurement, is mechanically linked to the pair of spectacles, this positioning element comprising at least one marker, the gripping means being able to grasp the orientation of said marker.
- the device comprises a displacement means for adjusting the height of the gripping means.
- the input means is a camera and the processing means comprises an image processing module, for example in the form of software, for determining the orientation of the visual reference element in each of the two positions and deduce the value of the angle ⁇ .
- the visual reference element is preferably integral with the input means.
- FIG. 1 already described, shows a pair of spectacles whose corrective lenses include an area for far vision and an area for near vision;
- FIGS. 2a and 2b show respectively in front view and in view of profile a pair of glasses provided with a positioner element,
- FIG. 3 illustrates the measurement of the orientation of the positioning element in far vision
- FIG. 4 illustrates the measurement of the orientation of the positioning element in near vision
- FIGS. 2a and 2b show a positioner element 8 mounted on a pair of spectacles 10.
- This positioning element comprises a substantially horizontal bridge 12 whose ends are each provided with a first branch 14 against which the front face of a correction glass 2 comes into support and a second branch 16 which rests on the rear surface of the corrective glass.
- the positioner element comprises at least one marker 18. The orientation thereof is entered and determined by the measuring device. The difference in orientation - resulting from a different position of the patient's head between distance vision and vision close - allows the optician to accurately define for each patient the value of the distance d (see Figure 1) appropriate for that patient.
- the positioner element may comprise additional markers such as the markers to control the correct positioning of the pair of spectacles with respect to the horizontal.
- These marks 20 may also be used for measuring the orientation of the marker 18, the latter being a function of the height h of the marker 18 above the line 1 connecting the marks 20.
- FIGS. 2a and 2b illustrate the use of the device according to the invention to determine the angle ⁇ and, therefore, in a known manner, the distance d.
- This device comprises a positioner element mounted on the pair of spectacles as shown in FIGS. 2a and 2b. It comprises an input means 22, for example a camera or a camera mounted on a column 24 forming a means of displacement adjustable in height.
- the device comprises a visual reference element 26 for the patient.
- This visual reference element is for example placed just above or just below the input means. It could also be annular type encircling the lens of the input means. It is not necessarily close to the input means but could, for example, be attached to a wall behind the input means.
- the patient himself chooses a reference deemed to represent the position of his head in far vision. He can then take for reference a point that corresponds only imperfectly to what corresponds to his natural attitude in far vision.
- the invention makes it possible to overcome this inaccuracy by forcing the patient's gaze on the visual reference element.
- the angle ⁇ formed by the average plane of the corrective lenses and the vertical is calculated by a processing means by analyzing, in the captured image, the orientation of the marker 18 (FIGS. 2a and 2b). This analysis can be done automatically using an image processing software.
- the measurement method is applied again, in the same way, for the near vision, as shown in FIG. 4.
- the patient is invited to look at a document 28, which he holds in the usual attitude which is his for reading closely.
- the angle OC formed between the mean plane of the corrective lenses and the vertical is calculated by the processing means in the same way as the angle ⁇ .
- the measurement of the orientations in the distant vision and in the near vision could be realized by placing the patient of profile compared to the means of capture (the reference element of visual for the distant vision being meanwhile always placed in front of the patient), the processing means then determining the angle ⁇ by measuring the angular difference of an eyeglass branch or reference mark, or any other part of the pair of spectacles or the element positioner, between visions from far and near.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Ophthalmology & Optometry (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Biophysics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Optics & Photonics (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Eyeglasses (AREA)
- Eye Examination Apparatus (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0600876A FR2896682B1 (fr) | 2006-01-31 | 2006-01-31 | Dispositif de mesure de l'angle, pour un patient porteur de lunettes, entre la vision de loin et la vision de pres. |
PCT/FR2007/050721 WO2007088313A1 (fr) | 2006-01-31 | 2007-01-31 | Dispositif de mesure de l'angle, pour un patient porteur de lunettes, entre la vision de loin et la vision de pres |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1981394A1 true EP1981394A1 (de) | 2008-10-22 |
Family
ID=37027013
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07731549A Ceased EP1981394A1 (de) | 2006-01-31 | 2007-01-31 | Vorrichtung zum messen des winkels zwischen weitsicht und kurzsicht bei einem brillenpatienten |
Country Status (7)
Country | Link |
---|---|
US (1) | US20100149486A1 (de) |
EP (1) | EP1981394A1 (de) |
JP (1) | JP2009529143A (de) |
KR (1) | KR101318875B1 (de) |
CN (1) | CN101378693A (de) |
FR (1) | FR2896682B1 (de) |
WO (1) | WO2007088313A1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2931002B1 (fr) * | 2008-05-09 | 2010-08-20 | Acep France | Ensemble de mesure de parametres ophtalmiques |
FR2931258B1 (fr) * | 2008-05-15 | 2010-05-28 | Acep France | Installation de determination de l'orientation de verres ophtalmiques d'une monture |
FR2932577B1 (fr) * | 2008-06-12 | 2010-08-27 | Essilor Int | Realisation d'un verre ophtalmique progressif personnalise |
KR101075972B1 (ko) * | 2009-04-02 | 2011-10-21 | (주) 휴아이 | 렌즈처방을 위한 매개변수 측정장치 |
DE102009025215A1 (de) * | 2009-06-17 | 2010-12-30 | Carl Zeiss Vision Gmbh | Methode und Vorrichtung zur Ermittlung der habituellen Kopfhaltung |
FR2965364B1 (fr) | 2010-09-23 | 2013-07-05 | Acep France | Methode de selection de lentilles ophtalmiques progressives |
KR101300670B1 (ko) * | 2012-11-14 | 2013-08-27 | (주)뷰아이텍 | 누진렌즈의 누진대 길이 설정을 위한 안구회선각 측정장치 및 그 방법 |
ES2536259B2 (es) * | 2013-11-20 | 2015-12-18 | Universidad De Sevilla | Procedimiento para la medición de la longitud de progresión real de un paciente para la fabricación de una lente progresiva |
FR3015058B1 (fr) * | 2013-12-16 | 2017-12-08 | Essilor Int | Procede de controle de la conformite de montage d'une monture et de verres correcteurs |
EP3413122B1 (de) | 2017-06-08 | 2020-03-04 | Carl Zeiss Vision International GmbH | Verfahren, vorrichtung und computerprogramm zum bestimmen eines nah-durchblickpunktes |
US11048100B2 (en) | 2018-04-20 | 2021-06-29 | Optikam Tech, Inc. | System and method for obtaining ophthalmic measurements for progressive lenses that accurately account for body stature and posture |
CN110595441B (zh) * | 2018-06-13 | 2021-10-12 | 杭州海康微影传感科技有限公司 | 瞄具 |
CN110313887B (zh) * | 2019-07-05 | 2021-08-03 | 青岛大学 | 一种异构视力表及视力检验方法 |
CN110236481B (zh) * | 2019-07-05 | 2021-08-03 | 青岛大学 | 一种视力检验装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1700562B1 (de) * | 1999-02-22 | 2009-09-09 | Nidek Co., Ltd. | Vorrichtung zur Messung von Augenpunkten eines Subjektes im Bezug auf ein Brillengestell |
US7431455B2 (en) * | 2005-03-22 | 2008-10-07 | Amo Manufacturing Usa, Llc | Pupilometer for pupil center drift and pupil size measurements at differing viewing distances |
DE10033983A1 (de) * | 2000-04-27 | 2001-10-31 | Frank Mothes | Einrichtung zur Bestimmung der Brillenglas-Zentrierdaten |
FR2829842B1 (fr) * | 2001-09-19 | 2003-12-05 | Jean Philippe Sayag | Dispositif d'acquisition des parametres de positionnement de verres ophtalmiques sur une monture de lunettes |
US7441895B2 (en) * | 2004-03-26 | 2008-10-28 | Hoya Corporation | Spectacle lens supply system, spectacle wearing parameter measurement apparatus, spectacle wearing test system, spectacle lens, and spectacle |
DE102004021407A1 (de) * | 2004-04-30 | 2005-11-17 | Rupp + Hubrach Gmbh & Co. Kg | Meßgerät |
FR2894687B1 (fr) * | 2005-12-13 | 2008-02-15 | Essilor Int | Procede de determination d'une lentille ophtalmique progressive |
-
2006
- 2006-01-31 FR FR0600876A patent/FR2896682B1/fr not_active Expired - Fee Related
-
2007
- 2007-01-31 JP JP2008551843A patent/JP2009529143A/ja not_active Withdrawn
- 2007-01-31 US US12/161,022 patent/US20100149486A1/en not_active Abandoned
- 2007-01-31 WO PCT/FR2007/050721 patent/WO2007088313A1/fr active Application Filing
- 2007-01-31 KR KR1020087020922A patent/KR101318875B1/ko not_active IP Right Cessation
- 2007-01-31 EP EP07731549A patent/EP1981394A1/de not_active Ceased
- 2007-01-31 CN CNA2007800040399A patent/CN101378693A/zh active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO2007088313A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2007088313A1 (fr) | 2007-08-09 |
KR20080094079A (ko) | 2008-10-22 |
KR101318875B1 (ko) | 2013-10-17 |
FR2896682B1 (fr) | 2008-05-02 |
FR2896682A1 (fr) | 2007-08-03 |
US20100149486A1 (en) | 2010-06-17 |
CN101378693A (zh) | 2009-03-04 |
JP2009529143A (ja) | 2009-08-13 |
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Effective date: 20101101 |