WO2006042918A1 - Dispositif et procédé d'acquisition de caractéristiques géométriques d'une monture de lunettes - Google Patents
Dispositif et procédé d'acquisition de caractéristiques géométriques d'une monture de lunettes Download PDFInfo
- Publication number
- WO2006042918A1 WO2006042918A1 PCT/FR2005/002077 FR2005002077W WO2006042918A1 WO 2006042918 A1 WO2006042918 A1 WO 2006042918A1 FR 2005002077 W FR2005002077 W FR 2005002077W WO 2006042918 A1 WO2006042918 A1 WO 2006042918A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- frame
- probe
- clamping
- thickness
- contact
- Prior art date
Links
Classifications
-
- 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
- B24B9/144—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 the spectacles being used as a template
-
- 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
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
- G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/20—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures
-
- 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
Definitions
- the present invention relates to a device for acquiring geometric characteristics of an eyeglass frame, comprising a fixed reference part, a measuring probe of an inner contour of the frame, movable relative to the reference part, and means for estimating the thickness of the frame.
- the invention also relates to a method of acquiring geometric characteristics of a spectacle frame in such a device.
- Figure 1 shows schematically and partially in perspective from above, a device 1 of the type referred to by the invention, wherein is placed a spectacle frame, shown schematically in phantom under the reference 2, and whose contour is to be measured.
- the device 1 comprises a reference part 3 on which are arranged two pairs of clamps 5 vis-à-vis, and a centering wedge (or "false nose") 7.
- the clamps 5 and the wedge 7 are provided to maintain the mount 2 in a fixed position relative to the part 3, and to adapt to different forms of frames.
- the part 3 is actually formed of two opposing equipments 3A, 3B, mounted sliding horizontally on a frame of the apparatus, so that the spacing between two clamps vis-à-vis -vis can be set.
- Part 3 remains fixed in relation to the frame of the device, which it can be assimilated.
- the frame comprises a measuring table 9 provided to be horizontal in operation, above which is held the frame 2 substantially flat, by means of the part 3, the clamps 5 and, optionally, the hold
- Each clamp 5 is formed of a pair of clamping members 11, 12, the first of which is an upper branch 11 fixed in height, and the second a lower branch 12 movable in height.
- the two branches are parallel and have their free ends turned towards the opposite clamp 5, that is to say towards the inside of the frame.
- the device 1 further comprises a measuring turret 15 rotatably mounted on the table 9, and provided with a radial groove 17.
- the turret is provided with a feeler 19, comprising a vertical rod 21 engaged in the groove 17 and a tip contact 22 substantially horizontal.
- the tip 22 is integral with the rod 21, and rotated radially outwardly.
- a system of axes Z, p in which:
- Z is the axis of rotation of the turret 15 perpendicular to the table 9, assumed vertical;
- p is the radial axis corresponding to the axis of the groove 17, rotating with the turret about the Z axis.
- the probe 19 is rotatable relative to the frame 3 with the turret 15, and capable of radial displacements in the groove 17 and vertical.
- the device 1 is provided with means (not shown) for driving rotation of the turret 15, and means (not shown) for driving the probe 19, making it possible to move the probe radially in the groove 17 and to move the probe vertically.
- the device 1 further comprises means (not shown) for recording the movements of the probe 19.
- the device 1 comprises means, motorized or not, for clamping the branches 11, 12 of the clamps 5 after engagement of the mount to be measured.
- FIG. 2 schematically shows, in a vertical radial plane passing through a clamp 5, the current section of a mounting ring 2, and the upper part of the probe 19 in a reference position retracted into the turret 15.
- the radial radial axis p and the vertical axis Z have been taken.
- the mounting ring has on its inner periphery a groove or bezel 31 in V.
- the current section of the mounting ring 2, including the profile of the bezel 31, is symmetrical with respect to the median plane horizontal.
- Each of the branches 11, 12 of the clamp 5 comprises an inner clamping face HA, 12A, and an outer face HB, 12B.
- the thickness e of the frame 2 which is clamped between the inner clamping faces HA, 12A of the two branches is equal to the spacing of the two branches 11, 12, that is to say the distance between the two faces Internal clamping HA, 12A.
- the thickness e_ of the frame is measured by means of a sensor associated with the mobile branch 12 of the clamp, this sensor detecting the movements of the branch 12 on the vertical axis between a position reference and a clamping position of the frame.
- the measurement of the thickness of the frame involves the presence of a specific sensor, which is disadvantageous from the point of view of the manufacturing cost of the apparatus.
- the object of the invention is to remedy this drawback, and to propose a device of the type previously explained, in which the cost relating to the measuring function of the thickness of the frame is substantially reduced or even eliminated.
- the means for estimating the thickness comprise the probe for measuring the contour.
- the device comprises at least one pair of clamping members of the frame, means for measuring and recording the position of a first clamping member, means for moving the feeler into a contact position. with the second clamping member, and means for recording the corresponding contact position of the probe, the estimation means being adapted to estimate the thickness of the mount from said recorded positions.
- the invention also relates to an associated method for acquiring geometric characteristics of a spectacle frame, in which the thickness of the frame is estimated by means of the contour measuring probe. According to other characteristics, optional, of the method according to the invention:
- the thickness of the frame is estimated as follows: the position of a first clamping member is measured and recorded,
- a probe movement cycle is performed, during which the probe is brought into contact with the second clamping member, and the corresponding contact position of the probe is recorded, and two recorded positions, the spacing of the two clamping members after tightening, and the thickness of the frame;
- the first clamping member being a fixed member
- the second clamping member being a movable member, measuring and recording the position of the first clamping member during a calibration step prior to clamping the frame
- the first clamping member being an upper fixed member having an internal clamping face
- the estimation of the thickness e of the frame is carried out by means of the probe 19 (and the means of registration to which it is linked).
- the means for estimating the thickness comprise the feeler 19 for measuring the outline of the frame.
- the thickness e 0 of the movable branch 12 is defined as the distance between its internal face 12A and its external face 12B. This thickness e 0 can either be known with great precision and pre-recorded in the apparatus, or be measured during a calibration phase of the apparatus and be recorded, the measurement being possible by means of the probe 19.
- This reference height hi is represented in FIG. 3. It can be measured by means external to the device, then grasped, or measured by means belonging to the device, for example by means of the probe , and again, by way of example as described below: the height hi is similar to the height of the probe, defined as the height of the median horizontal plane of the tip 22, such as the surface or the upper edge horizontal of the tip makes contact with horizontal inner face of the fixed branch 11. To do this, it brings the upper surface of the tip 22 in contact with the inner face HA of the fixed branch, and the position of the probe is recorded, from which is deduced the height hi.
- the probe 19 is then placed in its original position, as shown in Figure 2, that is to say substantially on the axis of rotation of the turret, at zero height. This original position is released from the clamps 5 and mount 2. The initialization phase is then complete.
- the displacement cycle of the probe 19 for the measurement of the thickness e is made from this original position, the clamps 5 being previously clamped on the frame 2, as illustrated in FIG. 2.
- the tip 22 is moved horizontally, remaining at the height h 1 # until coming into contact with its free end with the frame 2, and simultaneously with its upper surface with the inner face HA of the fixed branch 11.
- This position of the probe 19, shown in FIG. 4 defines a first contact position and gives the position p 0 on the radial axis of the inner edge of the circle of the frame 2. This information is recorded by the device to allow estimating and recording the radial position of the mount, significant in its width.
- This information taking could be performed at different heights of Ia 1, for example slightly lower or slightly higher (the radial position of the frame must then be compared to that of the clip).
- the probe 19 is disengaged from the clamp 5 and the frame 2 by a radial translation to the Z axis, then moved vertically for example to zero height.
- the probe is then displaced again radially, horizontally, until the free end of the tip 22 is returned to the position p 0 / at zero height. This position is shown in Figure 5.
- the passage from the first contact position shown in Figure 4, to the position of Figure 5, can be achieved via the original position (identical to that of Figure 2) or in another way.
- the feeler 19 is moved vertically until contact of the tip 22 on the outer face 12B of the movable branch 12.
- This position defines a second contact position of the probe 19.
- the height h 2 of the tip 22 in this position is recorded by the recording means associated with the probe.
- the estimation means make the estimation of the thickness e of the frame by calculation, by applying the following relation:
- the method of acquiring the geometrical data of the frame is continued by introducing the feeler 19 into the bottom of the bezel 31, with a view to the acquisition of the shape of the inner contour of the hoop.
- the point 22 is placed at the height h x - e / 2, corresponding to the estimated height of the bottom of the bezel, and in a radial position. released from the clamp 5 ( Figure 7). Then the tip 22 is moved horizontally towards the bottom of the bezel 31, until contact with the latter. After introduction of the tip of the probe 19 to the bottom of the bezel 31, the contour measurement can then begin with the rotation of the turret 15 and the detection of the movements of the probe 19, while the latter follows the inner contour of the frame in the bottom of bezel.
- the invention which has just been described makes it possible to accurately estimate the thickness of the frame, and thus to correctly position the feeler at the bottom of the bezel without resorting to specific means for measuring the thickness. .
- the invention therefore contributes to a decrease in the total cost of the apparatus.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Optics & Photonics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020077010999A KR101222256B1 (ko) | 2004-10-15 | 2005-08-11 | 안경 프레임의 기하학적 특징 획득 장치 및 방법 |
ES05798350T ES2403157T3 (es) | 2004-10-15 | 2005-08-11 | Dispositivo de adquisición de características geométricas de una montura de gafas |
EP05798350A EP1814693B1 (fr) | 2004-10-15 | 2005-08-11 | Dispositif et procédé d'acquisition de caractéristiques géométriques d'une monture de lunettes |
CN200580039117XA CN101056740B (zh) | 2004-10-15 | 2005-08-11 | 获取眼镜框架几何特征的装置及方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0410969A FR2876806B1 (fr) | 2004-10-15 | 2004-10-15 | Dispositif et procede d'acquisition de caracteristiques geometriques d'une monture de lunettes |
FR0410969 | 2004-10-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006042918A1 true WO2006042918A1 (fr) | 2006-04-27 |
Family
ID=34949490
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2005/002077 WO2006042918A1 (fr) | 2004-10-15 | 2005-08-11 | Dispositif et procédé d'acquisition de caractéristiques géométriques d'une monture de lunettes |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1814693B1 (fr) |
KR (1) | KR101222256B1 (fr) |
CN (1) | CN101056740B (fr) |
ES (1) | ES2403157T3 (fr) |
FR (1) | FR2876806B1 (fr) |
WO (1) | WO2006042918A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2918183B1 (fr) * | 2007-06-27 | 2009-11-27 | Essilor Int | Procedes de detection automatique du materiau de lunettes, de forme d'une monture et de detourage des lentilles associees a une monture. |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2659440A1 (fr) * | 1990-03-12 | 1991-09-13 | Nikon Corp | Appareil de mesure de la forme d'une monture de lunettes. |
FR2728965A1 (fr) * | 1994-12-30 | 1996-07-05 | Essilor Int | Procede pour la lecture du contour d'un quelconque article, et appareil de lecture de contour correspondant, notamment pour monture de lunettes |
US20020046000A1 (en) * | 2000-07-19 | 2002-04-18 | Kabushiki Kaisha Topcon | Lens frame shape measuring apparatus |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4360764B2 (ja) * | 2000-04-28 | 2009-11-11 | 株式会社トプコン | 眼鏡レンズのレンズ周縁加工方法、レンズ周縁加工装置及び眼鏡レンズ |
JP3854057B2 (ja) * | 2000-10-23 | 2006-12-06 | Hoya株式会社 | 眼鏡レンズの光学中心測定方法並びに眼鏡レンズのレンズホルダ取付方法及び装置 |
JP2004003944A (ja) * | 2002-04-08 | 2004-01-08 | Hoya Corp | 眼鏡枠形状測定装置 |
FR2838364B1 (fr) | 2002-04-12 | 2005-01-07 | Essilor Int | Procede de chanfreinage d'une lentille ophtalmique comporatnt une etape de releve sans contact |
FR2838363B1 (fr) | 2002-04-12 | 2004-12-24 | Essilor Int | Procede de meulage d'une lentille ophtalmique comportant une etape de releve sans contact |
JP2004287208A (ja) | 2003-03-24 | 2004-10-14 | Seiko Epson Corp | 眼鏡レンズの固着方法及び固着装置 |
JP4047753B2 (ja) | 2003-03-24 | 2008-02-13 | 株式会社トプコン | レンズ吸着部材の外形画像のレイアウト設定装置及びこれを備えるレンズ研削加工装置 |
-
2004
- 2004-10-15 FR FR0410969A patent/FR2876806B1/fr not_active Expired - Fee Related
-
2005
- 2005-08-11 CN CN200580039117XA patent/CN101056740B/zh active Active
- 2005-08-11 ES ES05798350T patent/ES2403157T3/es active Active
- 2005-08-11 WO PCT/FR2005/002077 patent/WO2006042918A1/fr active Application Filing
- 2005-08-11 KR KR1020077010999A patent/KR101222256B1/ko active IP Right Grant
- 2005-08-11 EP EP05798350A patent/EP1814693B1/fr active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2659440A1 (fr) * | 1990-03-12 | 1991-09-13 | Nikon Corp | Appareil de mesure de la forme d'une monture de lunettes. |
FR2728965A1 (fr) * | 1994-12-30 | 1996-07-05 | Essilor Int | Procede pour la lecture du contour d'un quelconque article, et appareil de lecture de contour correspondant, notamment pour monture de lunettes |
US20020046000A1 (en) * | 2000-07-19 | 2002-04-18 | Kabushiki Kaisha Topcon | Lens frame shape measuring apparatus |
Also Published As
Publication number | Publication date |
---|---|
EP1814693A1 (fr) | 2007-08-08 |
KR101222256B1 (ko) | 2013-01-16 |
CN101056740B (zh) | 2010-09-08 |
FR2876806A1 (fr) | 2006-04-21 |
CN101056740A (zh) | 2007-10-17 |
ES2403157T3 (es) | 2013-05-14 |
KR20070084224A (ko) | 2007-08-24 |
FR2876806B1 (fr) | 2007-02-02 |
EP1814693B1 (fr) | 2013-03-27 |
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