EP1392472A2 - Dispositif automatique ou semi-automatique pour le detourage du profil exterieur d'un verre ophtalmique - Google Patents
Dispositif automatique ou semi-automatique pour le detourage du profil exterieur d'un verre ophtalmiqueInfo
- Publication number
- EP1392472A2 EP1392472A2 EP02745486A EP02745486A EP1392472A2 EP 1392472 A2 EP1392472 A2 EP 1392472A2 EP 02745486 A EP02745486 A EP 02745486A EP 02745486 A EP02745486 A EP 02745486A EP 1392472 A2 EP1392472 A2 EP 1392472A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- glass
- support
- lens
- frame
- optical
- 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.)
- Granted
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
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/12—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
-
- 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
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
- B24B13/005—Blocking means, chucks or the like; Alignment devices
- B24B13/0055—Positioning of lenses; Marking of lenses
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- 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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/02—Frames; Beds; Carriages
-
- 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
- B24B9/148—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 electrically, e.g. numerically, controlled
Definitions
- the invention relates to a device for trimming ophthalmic glass and relates more particularly to an improvement making it possible to automate the handling and handling of the glass between, on the one hand, a position where the optical characteristics of the latter can be determined using appropriate measuring means in order to determine a grip point on said glass and, on the other hand, the clipping means.
- the latter are typically formed by a grinding wheel adapted to modify the contour of the lens to adapt it to that of the frame or "circle" of a selected frame.
- the technical part of the optician's profession consists in placing an ophthalmic lens in each frame of the frame selected by the wearer. To do this, it is necessary to perform a number of operations.
- the optician After choosing the frame, the optician must locate the position of the pupil of each eye in the frame of reference. It thus determines two parameters related to the morphology of the wearer, namely the inter-pupillary distance as well as the height of the pupil relative to the frame.
- the frame itself As for the frame itself, its shape should be identified, which is generally achieved using a template or a device specially designed to read the internal outline of the "circle" (it i.e. the frame of the lens) of the frame.
- the optician must also carry out a certain number of operations on the lens itself, before trimming, in order to identify some of its characteristics such as for example the optical center (in the case of a unifocal lens), or the direction of the lens. progression axis and the position of the centering point for a progressive lens. In practice, the optician transfers certain characteristic points using a striking point on the ophthalmic lens itself.
- the operator can resume machining. To do this, he can replace the glass in the machine, using the same centering pin.
- the distribution of the operations mentioned above can be done on two or three workstations. Errors are therefore possible due to the multiplication of manipulations.
- these operations are carried out within the framework of an industrial organization, this results in a considerable loss of time and a high production cost.
- the risk of degradation of the ophthalmic lens increases with the number of manipulations.
- the invention makes it possible to optimize the process set out above by automating as much as possible the measurement and positioning phases of the ophthalmic lens, which makes it possible to determine the optical characteristics of the lens and to control the phase of transport of the lens to the station. clipping and the actual clipping phase.
- the invention essentially relates to a device for trimming ophthalmic glass, characterized in that it comprises:
- a support for such a glass movable along at least a predetermined path of a first frame of reference between a predetermined position relative to said detection means and a loading position, - means for superimposing the aforementioned characteristics of said glass and characteristics representative of the morphology of said wearer,
- the means for superimposing the aforementioned characteristics may (in the case of a relatively elaborate embodiment, with automatic operation) include calculation means, for carrying out a "superposition" of the data representative of the characteristics in question. They can nevertheless be supplemented by display means (for example a monitor) to allow an operator to visually control the superposition of the representation of said characteristics and possibly of the representation of the frame contour.
- the gripping and clamping means are arranged (motorized) to rotate the glass around its gripping point, during the grinding phase.
- the means for detecting the characteristics of the glass can be semi-automatic or automatic.
- the operator places the ophthalmic lens on the support at a measurement location. It has at its disposal an electronic and computer system and a display screen making it possible to superimpose a contour representative of the shape of the "circle" of the frame, certain optical characteristics of the ophthalmic lens considered and information representative of the morphology of the wearer.
- the optician then moves the lens on its support until the characteristic points of said lens appear on the screen in suitable locations with respect to a mark representative of the morphology of the wearer.
- the representative outline of the frame determines the point of grip of the lens.
- the latter moves along said predetermined path of the first frame (typically a rectilinear movement) so that the means forming gripping and clamping forceps can be applied on either side of the glass and that it is transported to the grinding means.
- the results of the readings and measurements carried out on the glass are used so that the clamp-forming means gripping and tightening, grip the glass at a suitable point without it having been necessary to adjust the position of said glass on the support.
- FIG. 1 is a general schematic perspective view of part of the device
- FIG. 1 is a top view of Figure 1, the glass support being in another position;
- - Figure 3 is a schematic view illustrating more particularly the data taking means for detecting the main characteristics of the lens and positioning it relative to the contour of the frame chosen, before trimming;
- - Figure 4 is a diagram illustrating how the gripping point of the lens is determined relative to the outline of the frame;
- FIG. 5 is a diagram illustrating a variant of the means for detecting characteristics of said ophthalmic lens.
- the ophthalmic lens trimming device 10 shown in FIGS. 1 to 3 comprises a support 3 of such a lens, movable along a predetermined path F, means 4 for detecting certain characteristics of the lens 2, calculation means 16 here comprising display means 18 constituted by the screen of a monitor, grinding means 20 for trimming the edge of the ophthalmic glass to the desired shape and dimensions and means forming gripper and clamp 25 for transport the ophthalmic lens 2 from the support 3 to the grinding means 20.
- the support 3 is movable along said path F between a measurement position, predetermined with respect to said detection means 4 ( Figures 1 and 3) and a loading position (visible in Figure 2).
- said predetermined path is rectilinear; it is defined by two parallel slides 15a, 15b between which the support 3 moves.
- the latter essentially consists of a plate whose central part at less is transparent, for example glass. This plate moves in its own plane between the slides.
- the support drive means are not shown, so as not to overload the drawing.
- the plate is provided with projections 6 forming a tripod, to hold the glass.
- the slides which define the path F materialize a first frame of reference, specific to the support 3, which here evolves between the predetermined measurement position with respect to said detection means 4 and said loading position.
- the support 3 therefore has a double function. It maintains the glass during the entire measurement phase, without disturbing them due to its particular structure (transparency), then it transports it to a precise location where the glass is taken up by the gripper and Tightening.
- the means 4 for detecting the characteristics of the glass comprise, on either side of said predetermined position of the support, on the one hand, lighting means 8 including a light source S, and a collimating lens 9 suitable for providing a complete parallel beam illuminating the glass, and, on the other hand, means 11 for analyzing the image transmitted by the glass installed on the support 3.
- lighting means 8 including a light source S
- a collimating lens 9 suitable for providing a complete parallel beam illuminating the glass
- These include, in the example, an optical receiver 28 and a translucent screen 29 interposed between the support and the optical receiver.
- the translucent screen 29 can consist of a frosted glass plate on the surface. To improve the readability of the information which appears on the frosted screen 29, the latter can be a disc mounted rotating and driven in rotation in its own plane.
- the optical receiver 28 can be a matrix receiver or, as shown, a camera. The optical axis of this receiver is perpendic
- the screen 29 is perpendicular to this optical axis.
- the camera captures the image of the glass that forms on the frosted screen.
- the information produced by the camera is sent to the calculation and display means 16, 18. They are processed by an electronic and computer system 30 which also receives information representative of the parameters mentioned above of inter-pupillary deviation and height, by means of a transmission device 32 and information representative of the outline of the frame chosen. This information is by example kept in a memory 34 and selected by the practitioner.
- the electronic and computer system 30 produces an image which is displayed on the screen of the monitor of the display means 18. Consequently, in the semi-automatic adjustment version, the outline will be seen in particular on this screen, on the same scale. of the frame and that of the non-cut lens, with its particular characteristics, in particular the reference points which are worn there. We will also see the gripping point 0 determined as indicated below, as well as the point or points representative of the morphology of the wearer.
- the transparent support 3 includes a clearance cutout 38, allowing said gripping means 25 to clamp the glass at a desired location on its surface and to release it from the support when the latter is in said loading position, in order to 'Bring said ophthalmic lens in the vicinity of the grinding means, to proceed with the trimming of this lens.
- the means forming gripping and clamping forceps 25 move in a second reference frame for transporting said ophthalmic lens from said loading position to the grinding means.
- these means comprise a frame 39 in the general shape of C, mounted movable in controlled rotation, about a vertical axis, 40 perpendicular to the plane of the support 3.
- the rotation of the frame makes it possible to bring a glass 2 clamped by the gripper, in an area of activity of the grinding means.
- This frame comprises two arms 45, 46 extending on either side of a horizontal plane in which the support 3 moves.
- the lower arm 45 carries a clamping and rotation drive shaft 48 while the other upper arm 46 carries a rotation drive shaft 49.
- the two shafts 48, 49 are linked to common rotation drive means, housed at the interior of the frame 39.
- the two shafts are coaxial and provided at their ends opposite clamping pads 50 allowing the gripping and blocking of an ophthalmic lens 2 taken from the support 3.
- the clamping shaft 48 is itself controlled by movement along its own axis to ensure the gripping and blocking of the ophthalmic lens.
- the pivot axis 40 of the frame is parallel to the common axis of the shafts 48 and 49.
- the frame 39 as a whole is movable and controlled in translation along its axis 40 (direction Z).
- an ophthalmic glass grinder generally comprises several grinding wheels stacked axially: Two grinding wheels for the roughing (one for plastics and one for the mineral), a finishing grinding wheel and, possibly, a grinding wheel for polishing.
- the glass To carry out the different machining phases, the glass must pass successively over two or three grinding wheels. To do this, it is therefore necessary to ensure a relative translational movement between the grinding wheels and the glass in a direction parallel to the axis of the grinding wheels.
- This relative movement could be achieved by translating the support of the grinding wheels along their axis.
- the frame 39 which performs this movement in order to facilitate the gripping of the glass. Indeed, once the glass positioned manually or measured and the support 3 in the loading position, the frame 39 rotates around its axis 40 to position the shafts 48 and 49 opposite the gripping point, then it translates downwards until contacting the shoe 50 of the shaft 49 with the glass. Then the shoe of the shaft 48 pinches the glass. The frame then rises along its axis 40, releases the glass 2 from the support 3 and then turns around this same axis to position the glass in the grinding zone. The frame can then rotate about 120 to 150 ° to bring the glass to be cut in the vicinity of the grinder.
- the electronic and computer system 30 controls both the pivoting of the frame and the rotation of the lens around the common axis of the two shafts 48, 49, as a function of the contour to be given to the ophthalmic lens.
- the gripping and clamping means 25 move the glass in said second reference frame to transport the glass from the loading position to the grinding means and then rotate the glass around the common axis of the two shafts.
- This second repository is linked to said first repository, that is to say that of support.
- the pivoting of the frame 39 is controlled during grinding.
- the center 0 of the rectangle 56 which frames the perimeter of the
- the ophthalmic lens 3 can be of several types. If it is a uni focal lens the optician will have to locate its optical center as well as, possibly, the axis of the cylinder, for the correction of astigmatism, using a known device called frontofocometre. With this device, three points are aligned aligned on the surface of the glass. The central point corresponds to the optical center of the glass, the other two indicate the axis of the cylinder. If it is a progressive lens, it is generally delivered with an ink marking intended to identify the points necessary for centering. Typically, this marking materializes the far vision center, the progression axis and the near vision area. In the case of a bi or tri focal lens, the "pastille" for near vision is taken as a reference for centering.
- the optician has a digitization of the shape of the chosen frame (memory 34) allowing him to introduce this shape into the electronic and computer system 30, in the form of data which make it possible to visualize the outline of the frame or "circle" on the screen of the display means 18.
- the optician informs the electronic and computer system 30 of the values of inter-pupillary deviation and of height, measured on the wearer.
- a device 32 keyboard or other constitutes an interface adapted to take into account and introduce into the system 30 the characteristics representative of the morphology of the wearer.
- the representative shape of the frame is displayed on the screen and is positioned so that the center 0 of the rectangle in which the "circle" is inscribed (see Figure 4) corresponds to a determined point which will be the point of gripping of the glass on the support 3, when the support is in said loading position.
- a centering cross appears on the screen.
- this cross corresponds to the optical center of the lens for a focal focal lens, to the far vision point for a progressive lens or to the position of the center of the segment of the patch, for a bi or tri focal lens.
- the electronic and computer system "receives the image" of the glass via the receiver 28, which makes it possible to superimpose this image on those which are already displayed on the screen.
- the optician can therefore vary the position of the glass on the support 3 so as to position the markings made on the glass with respect to the centering cross.
- the appearance of the "circle" of the frame makes it possible to check that the lens is large enough for mounting to be possible.
- the carriage carries out a translation while two rotations and a translation are carried out by the means forming gripping and clamping forceps: a rotation around the axis 40 of said movable frame, a rotation around the axis common of the two shafts 48, 49.
- the translation is in the direction Z.
- an automatic detection device 104 for the characteristics of an ophthalmic lens capable of constituting an improved variant of the means for detecting characteristics of the lens shown in FIG. 3.
- the electronic and computer system 30 will be able to carry out a more complete analysis of the image of the glass and automatically recognize, for example, the markings made on the glass or the segment of a bifocal glass.
- the analysis of the image makes it possible to know the position of the markings of the glass in the reference frame of this support.
- the system can then calculate the position of the lens clamping center so that the optical center of the lens or another centering mark is correctly positioned in the frame.
- the means forming gripping and clamping clamps clamp the glass at this point.
- This automatic detection device 104 of the characteristics of an ophthalmic lens 102 comprises a support 103, here horizontal and constituted by a transparent glass plate provided with projections 106 forming a tripod, to hold such a lens and, on either side of this support: on the one hand lighting means 108 including an optical system for developing a light beam directed towards the glass installed on the support and, on the other hand, means of analysis 110 of the image transmitted by the glass installed on the support.
- the optical system 111 is arranged to define two possible optical paths 112, 113, switchable, for said light beam.
- the lighting means comprise at least two switchable light sources S1, S2, corresponding respectively to the two aforementioned optical paths.
- the two optical paths 112, 113 comprise a common part 115 upstream of said support, more particularly determined between a semi-reflecting mirror 118 and the sensor 128. This mirror materializes the intersection of the two optical paths.
- the mirror can be replaced by a separator cube or a removable mirror.
- a mask 120 forming a Hartmann matrix or the like is placed on only one of the paths (path 112), in a location such that it occupies a predetermined position relative to a optical axis 125 of said analysis means 110.
- This optical axis 125 is in fact the common axis of certain lenses of the optical system centered with respect to the source S1 and of an optical receiver 128 forming part of the analysis means 110 located the other side of the support 103.
- the analysis means also include a translucent screen 129 frosted, inserted perpendicularly to this optical axis 125 between the support 103 and said optical receiver 128.
- the latter can be a matrix sensor or a camera with lens.
- the optical receiver is a matrix sensor, a system of two lenses 130, 131 and a diaphragm 132 (telecentric system) are added to it. If the optical receiver is a camera, these elements are replaced by the very lens of the camera.
- the translucent screen 129 frosted is preferably a glass or the like, frosted on the surface. It is a disc mounted to rotate and driven in rotation by a motor 135 about an axis parallel 136 to the optical axis 125 and spaced from the latter.
- the first light source S1 among these two sources is a so-called point source associated with at least one collimation lens 139 capable of providing a complete parallel beam illuminating the mask 120 thereof.
- the source S1 is used to establish a sort of lens mapping (power measurement / astigmatism at several points on the lens), to determine the optical center of non-progressive lenses, and to reposition objects on the front of the lens (engraving, marking , segment) seen with S2.
- S1 may optionally be movable along the optical axis or an axis perpendicular thereto.
- the collimating lens 139 is centered on the aforementioned optical axis.
- the optical system further includes an expander consisting of two lenses
- a second light source S2 is arranged to illuminate the glass 102 installed on the support 103 via a part of the optical system, excluding the mask 120 forming a Hartmann matrix.
- This second light source is associated with the semi-reflecting mirror 118 which materializes the intersection of the two optical paths 112, 113.
- This source S2 is a point source associated with at least one collimation lens capable of providing a full parallel beam directed towards the mirror 118.
- the beam generated by the lens S2 is perpendicular to the beam generated by the lens S1 and the mirror makes an angle of 45 ° relative to the optical axis 125 so that the complete parallel beam coming from the source S2 is reflected on this mirror and directed towards the support 103 of the ophthalmic lens.
- the light emitted by the source S2 is divided into distinct light rays parallel to each other at the outlet of the expander 140, 141.
- the source S2 is mainly used for the determination of printed marks, relief engravings and segments
- the device comprises at least a third light source and, in the example, several sources S31, S3n distributed circularly, at the periphery of the support 103, for illuminating in grazing light, such a glass placed on said support.
- the light rays must not be diffused by the frosted surface, it is therefore necessary to provide either a retractable frosted glass or a glass having a polished area used only in this case.
- the light sources mentioned S1, S2, above can be light-emitting diodes (LEDs) or laser diodes preferably associated with respective optical fibers.
- the sources S31, S3n will preferably be light-emitting diodes.
- the source S1 is used in conjunction with the mask forming the Hartmann matrix.
- the complete parallel beam is transformed by the mask 120 into a plurality of individualized fine rays corresponding to the configuration of the mask. Each of these rays strikes the entry face (front face of the glass) parallel to the optical axis. These rays are deflected by the glass and are visualized in the form of light spots on the rotating frosted screen 129.
- the frosted image is imaged on the matrix sensor, associated with the telecentric system or that of the camera, and the tasks are analyzed by a system. processing electronics and computing 16 ( Figure 2) which determines their movement.
- the displacement of the points of the mask (that is to say the luminous spots which appear on the frosted screen) after deflection by the lens is in linear progression from the center to the periphery, compared to the positions of the same points when the support does not carry any ophthalmic lens.
- the positions of the points of the Hartmann mask on the screen when the support does not carry any glass are measured during a calibration phase. Consequently, the measurement of a displacement of this kind makes it possible to determine the type of glass. For example, for a converging lens, the tasks get closer to the optical axis, especially since the lens is powerful.
- progression line the direction of the power gradient is determined by calculation by calculating the power at different points of the glass, for example according to the method which will be indicated below. This direction is the line of progression.
- the ophthalmic lens 102 has been identified as being of the unifocal type, it is easy to determine the position of the optical center of this lens by comparing the points of the reference mask (appearing on the frosted screen 129 when no lens is positioned on the support) and the corresponding points of the mask displayed on the frosted screen after deflection by the lens.
- the point of the mask which has not been deflected corresponds to the position of the optical center.
- an interpolation is carried out from the least deviated rays, for example by applying the method of least squares.
- the position of the rear face of the glass is given with a good approximation by the position of the support since the glass is placed on it.
- the image on the frosted screen of the mask forming the Hartmann matrix is still used.
- the position and direction of the light rays are compared for several neighboring points, which makes it possible to calculate the position of the focal point on the optical axis (and therefore its power, which is the inverse of the distance from the focal point to the glass) and l 'astigmatism of the glass (value and axis of astigmatism) if there is astigmatism.
- These measurements are local and can be repeated on different areas of the glass, which makes it possible to obtain a glass power map.
- the addition is defined as the difference between the maximum power and the minimum power of the glass.
- the reference point of the prism is defined as the point where the glass prism is worth two-thirds of the addition.
- the prism reference point is the center of a segment separating two marks engraved on the lens. Most often, this point is also identified by a specific printed marking.
- the identification of the PRP is done by illuminating the glass from the light source S2, that is to say by avoiding the Hartmann mask 120.
- the image transmitted by the ophthalmic glass appears on the frosted glass 129, it is perceived by the optical receiver 128. Reading is accompanied by an appropriate image processing to better discern the engraved marks or the markings.
- This visualization of the engraved marks or markings and the determination of the PRP then makes it possible to determine the centering point of the progressive lens (analogous to the optical center) on which we must make coincide the position of the center of the pupil, the eye of the wearer and the horizontal axis which gives the orientation of the lens in the frame.
- the glass is generally circular and this analysis mainly aims to determine its diameter. However, it may happen that the lens already has a shape close to that of the frame for which it is intended. Image processing allows us to know the shape and dimensions of non-circular glass. Determining the shape and dimensions of the lens makes it possible to verify that it is large enough to fit in the frame.
- the source S2 makes it possible to see the marks, engravings or segment but does not make it possible to determine their positions on the front face of the glass.
- the source S1 on the other hand makes it possible to calculate the precise position of these elements acquired with S2 on the front face of the glass. We proceed as follows. Suppose that we consider the light spot A, on the frosted screen 129, corresponding to one of the holes in the Hartmann mask. The corresponding light beam hits the front of the glass
- the source S2 is turned on and the corresponding image which appears on the frosted screen is stored. Then, we turn on the source S1 and we turn off the source S2.
- the image of Hartmann's mask therefore appears on the frosted screen 129.
- the height of each hole in the Hartmann mask is known (distance of the hole from the optical axis 125). Consequently, for a given radius and since the characteristics of the expander 140, 141 are well known, the height of the radius corresponding to its entry point on the front face of the ophthalmic lens 102 is known. say that we know the height of point A 'corresponding to point A. Consequently, we can assign to point A a correction which makes it possible to determine A'.
- the measurements normally carried out by using the source S2 can be carried out under better conditions, when the ophthalmic lens is a mineral lens, by replacing the source S2 by one or more sources illuminating the front face of the ophthalmic lens in light grazing.
- the acquisition of the measurements indicated above makes it possible, in connection with the data acquired by the transmission device 32 and the memory 34, to determine the exact grip point of the ophthalmic lens on the support 3 brought to said loading position and control all the movements of the frame 39 (pivoting around the axis 39 and rotation of the glass) during the clipping.
- the monitor 18 is optional.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Eyeglasses (AREA)
- Prostheses (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0107315 | 2001-06-05 | ||
FR0107315A FR2825308B1 (fr) | 2001-06-05 | 2001-06-05 | Dispositif automatique ou semi-automatique pour le detourage d'un verre ophtalmique |
PCT/FR2002/001918 WO2002098606A2 (fr) | 2001-06-05 | 2002-06-05 | Dispositif automatique ou semi-automatique pour le detourage du profil exterieur d'un verre ophtalmique |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1392472A2 true EP1392472A2 (fr) | 2004-03-03 |
EP1392472B1 EP1392472B1 (fr) | 2011-02-23 |
Family
ID=8863948
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02745486A Expired - Lifetime EP1392472B1 (fr) | 2001-06-05 | 2002-06-05 | Dispositif automatique ou semi-automatique pour le detourage du profil exterieur d'un verre ophtalmique |
Country Status (8)
Country | Link |
---|---|
US (1) | US7201631B2 (fr) |
EP (1) | EP1392472B1 (fr) |
JP (1) | JP4001576B2 (fr) |
AT (1) | ATE499181T1 (fr) |
AU (1) | AU2002317220A1 (fr) |
DE (1) | DE60239270D1 (fr) |
FR (1) | FR2825308B1 (fr) |
WO (1) | WO2002098606A2 (fr) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2838364B1 (fr) * | 2002-04-12 | 2005-01-07 | Essilor Int | Procede de chanfreinage d'une lentille ophtalmique comporatnt une etape de releve sans contact |
DE10300777A1 (de) * | 2003-01-11 | 2004-07-22 | Carl Zeiss | Verfahren zur parallaxefreien Zentrierung eines optischen Elementes |
FR2866718B1 (fr) * | 2004-02-24 | 2006-05-05 | Essilor Int | Dispositif centreur-bloqueur d'une lentille ophtalmique de lunettes, methode de detection automatique et methodes de centrage manuel associees |
FR2866721B1 (fr) * | 2004-02-24 | 2006-05-19 | Essilor Int | Methode de centrage manuel d'une lentille ophtalmique de lunettes avec affichage intermittent d'un signe opaque servant a la correction de l'erreur de deviation prismatique induite par la lentille |
FR2866719B1 (fr) * | 2004-02-24 | 2006-05-19 | Essilor Int | Methode de contrage manuel d'une lentille ophtalmique de lunettes dans un centreur-bloqueur et dispositif centreur-bloqueur associe |
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FR2878972B1 (fr) * | 2004-12-03 | 2007-02-16 | Essilor Int | Procede et dispositif de preparation automatique au montage d'une lentille ophtalmique |
FR2878975B1 (fr) * | 2004-12-03 | 2007-02-16 | Essilor Int | Procede et dispositif de preparation au montage d'un job de deux lentilles ophtalmiques d'une meme paire de lunettes |
FR2878971B1 (fr) * | 2004-12-03 | 2007-04-20 | Essilor Int | Procede et dispositif de preparation automatique au montage d'une lentille ophtalmique |
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JP4963977B2 (ja) * | 2006-04-27 | 2012-06-27 | Hoya株式会社 | 眼鏡レンズの製造システム及びマーク検出装置 |
EP2048472B1 (fr) * | 2006-07-31 | 2018-02-21 | Hoya Corporation | Dispositif et procédé de mesure de forme de lentille, procédé de production de lentille et procédé de production de lunettes |
FR2937574A1 (fr) * | 2008-10-29 | 2010-04-30 | Guy Monnoyeur | Dispositif et procede d'usinage et/ou de polissage de lentille |
FR2958870B1 (fr) * | 2010-04-20 | 2012-04-20 | Essilor Int | Procede de detourage d'une lentille ophtalmique de lunettes |
FR2959831B1 (fr) * | 2010-05-10 | 2013-02-15 | Essilor Int | Procede de preparation d'une lentille ophtalmique equipee d'une marque memoire. |
JP6015021B2 (ja) | 2011-02-16 | 2016-10-26 | 株式会社ニデック | 眼鏡レンズ加工形状取得方法及び眼鏡レンズ加工形状取得装置 |
EP2522458B1 (fr) * | 2011-05-13 | 2016-07-06 | ESSILOR INTERNATIONAL (Compagnie Générale d'Optique) | Procédé pour la détermination des paramètres de position d'une surface fabriquée par rapport à une surface de référence |
USD740949S1 (en) * | 2013-09-09 | 2015-10-13 | Essilor International (Compagnie Générale d'Optique) | Ophthalmic lens edger |
CN104070434B (zh) * | 2014-04-23 | 2016-08-17 | 明基材料有限公司 | 偏光板裁切磨边装置及偏光板制造方法 |
FR3023384B1 (fr) * | 2014-07-01 | 2017-10-20 | M-Optics | Dispositif de visualisation du marquage d'un verre ophtalmique |
FR3024246B1 (fr) * | 2014-07-25 | 2016-08-05 | Essilor Int | Procede d'elaboration d'une consigne de detourage d'une lentille optique |
CN104655645B (zh) * | 2015-03-06 | 2017-05-24 | 合肥京东方光电科技有限公司 | 一种基板破损检查装置、生产系统及检查方法 |
US10144090B2 (en) * | 2015-07-17 | 2018-12-04 | Shanghai Seeyao Electronics Co., Ltd. | Process and device for simultaneous laser welding |
EP3543159A1 (fr) * | 2018-03-23 | 2019-09-25 | Carl Zeiss Vision International GmbH | Conteneur de transport pour verres de lunettes ou palet de verre de lunettes dans la fabrication de verre de lunettes et procédé de fabrication d'un verre de lunettes à partir d'un pallet |
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FR2582975B1 (fr) * | 1985-06-10 | 1987-08-28 | Briot Int | Appareil pour centrer et poser un adaptateur sur une ebauche de verre optique et pour commander une rectifieuse |
JPH07186027A (ja) * | 1993-12-28 | 1995-07-25 | Topcon Corp | レンズ研削加工システム |
DE19616572C2 (de) * | 1995-08-26 | 1998-03-26 | Wernicke & Co Gmbh | Verfahren und Vorrichtung zum Vermessen eines Brillengestells oder eines Brillenglases oder einer Formscheibe |
JP2786848B2 (ja) | 1997-02-07 | 1998-08-13 | 株式会社トプコン | 吸着済レンズの画像表示装置 |
JP3778707B2 (ja) * | 1998-09-29 | 2006-05-24 | 株式会社ニデック | 眼鏡レンズ加工装置 |
IL132436A0 (en) | 1999-10-18 | 2001-03-19 | Prolaser Ltd | Automatic attachment of a finishing block to an ophthalmic lens |
US6390887B1 (en) * | 1999-12-21 | 2002-05-21 | Johnson & Johnson Vision Products, Inc. | Pre-cutter and edger machine |
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2001
- 2001-06-05 FR FR0107315A patent/FR2825308B1/fr not_active Expired - Lifetime
-
2002
- 2002-06-05 WO PCT/FR2002/001918 patent/WO2002098606A2/fr active Application Filing
- 2002-06-05 DE DE60239270T patent/DE60239270D1/de not_active Expired - Lifetime
- 2002-06-05 EP EP02745486A patent/EP1392472B1/fr not_active Expired - Lifetime
- 2002-06-05 AU AU2002317220A patent/AU2002317220A1/en not_active Abandoned
- 2002-06-05 US US10/479,414 patent/US7201631B2/en not_active Expired - Lifetime
- 2002-06-05 AT AT02745486T patent/ATE499181T1/de not_active IP Right Cessation
- 2002-06-05 JP JP2003501630A patent/JP4001576B2/ja not_active Expired - Fee Related
Non-Patent Citations (1)
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US7201631B2 (en) | 2007-04-10 |
DE60239270D1 (de) | 2011-04-07 |
FR2825308B1 (fr) | 2003-10-10 |
US20040142642A1 (en) | 2004-07-22 |
FR2825308A1 (fr) | 2002-12-06 |
ATE499181T1 (de) | 2011-03-15 |
EP1392472B1 (fr) | 2011-02-23 |
AU2002317220A1 (en) | 2002-12-16 |
JP4001576B2 (ja) | 2007-10-31 |
WO2002098606A2 (fr) | 2002-12-12 |
JP2004532135A (ja) | 2004-10-21 |
WO2002098606A3 (fr) | 2003-09-25 |
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