EP2247408B1 - Sichtgerät mit brillenglas mit teilweise beschnittener einsatzrippe und verfahren zur herstellung eines derartigen glases - Google Patents

Sichtgerät mit brillenglas mit teilweise beschnittener einsatzrippe und verfahren zur herstellung eines derartigen glases Download PDF

Info

Publication number
EP2247408B1
EP2247408B1 EP08872556A EP08872556A EP2247408B1 EP 2247408 B1 EP2247408 B1 EP 2247408B1 EP 08872556 A EP08872556 A EP 08872556A EP 08872556 A EP08872556 A EP 08872556A EP 2247408 B1 EP2247408 B1 EP 2247408B1
Authority
EP
European Patent Office
Prior art keywords
longitudinal profile
points
ophthalmic lens
singular
frame
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.)
Active
Application number
EP08872556A
Other languages
English (en)
French (fr)
Other versions
EP2247408A2 (de
Inventor
Ahmed Haddadi
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.)
EssilorLuxottica SA
Original Assignee
Essilor International Compagnie Generale dOptique SA
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 Essilor International Compagnie Generale dOptique SA filed Critical Essilor International Compagnie Generale dOptique SA
Publication of EP2247408A2 publication Critical patent/EP2247408A2/de
Application granted granted Critical
Publication of EP2247408B1 publication Critical patent/EP2247408B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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

Definitions

  • the present invention relates generally to the field of eyewear and more specifically to the preparation of ophthalmic lenses for interlocking in circled spectacle frame surrounds.
  • It relates more specifically to a visual equipment comprising at least one ophthalmic lens and a method for preparing such an ophthalmic lens.
  • the optician is to cut the ophthalmic lens so that it can mechanically and aesthetically adapt to the shape of the corresponding entourage of the selected frame, while ensuring that the lens exercises at best the optical function for which it was designed.
  • the machining operation comprises in particular, in the case of rimmed frames, a beveling step for forming on the edge of the lens an interlocking rib, commonly called bevel, adapted to fit into a groove, commonly called a sucker, which runs along the inner face of the corresponding entourage of the mount.
  • a beveling step for forming on the edge of the lens an interlocking rib, commonly called bevel, adapted to fit into a groove, commonly called a sucker, which runs along the inner face of the corresponding entourage of the mount.
  • the two acquisition and machining operations must be carried out carefully so that the lens can perfectly fit into its surroundings, effortlessly and "first time”, that is to say without requiring resumption of machining.
  • a lens thus machined has a contour that rarely corresponds exactly to the outline of the bezel of his entourage. It may then be too large, which forces the optician to perform a tedious recovery of the machining of the nesting rib, too small.
  • the lenses considered as mountable in their surroundings are, to a large extent, slightly too large compared to their surroundings, so that once nested in their surroundings, they are mechanically constrained. As a result, these lenses are weakened and their treatment layers are likely to degrade more rapidly. In addition, these mechanical stresses slightly modify the optical characteristics of the lens, which can cause discomfort for the wearer.
  • the present invention provides a visual equipment comprising an ophthalmic lens cut away so that the probability that it fits the first shot in his environment without being subjected to too much high mechanical stress is increased.
  • the ophthalmic lens is cut away so that its engagement rib is not in contact with the bezel on its entire periphery but rather so that there appear spaces between the nesting rib of the lens and the bezel of the entourage of the mount, at the level of said singular sections of freedom.
  • the number of fifteen singular sections of freedom makes it possible to ensure that at least one of these sections is always located near an area in which the surroundings can be deformed (in particular near the highly curved areas of the entourage).
  • the random choice of the positions of these singular sections of freedom along the nesting rib also gives the implementation algorithm of the method of preparation of this visual equipment a high speed of execution.
  • the difference between the maximum value and the value minimum is less than 0.3 millimeter.
  • the ophthalmic lens is beveled in an outline that does not correspond uniformly to the outline of the bezel.
  • the gap between the first and second longitudinal profiles physically results in a slight gap between the engagement rib of the lens and the bezel of the entourage of the frame. Consequently, if the interlocking rib has erroneously been machined to an outline that is slightly too large compared to the outline of the bezel, this slight space allows the surround to locally deform to compensate for this machining error. In this way, the lens can be nested in its surroundings, without the latter inducing excessive mechanical stress on the lens.
  • the invention also relates to method s for the preparation of an ophthalmic lens as defined in claims 11 and 12.
  • the present invention aims to facilitate and improve the quality of the interlocking of an ophthalmic lens in a surrounding of a spectacle frame.
  • each surround 11 is internally traversed by a generally profiled groove, generally in the form of dihedron, commonly known as a bezel.
  • This bezel extends along a curvilinear longitudinal profile 12.
  • Such a bezel 13 is shown in section on the figure 8A .
  • This longitudinal profile 12 corresponds to one of the strands of the bezel, which extends on one and / or the other of the sides of this bezel and which is substantially parallel or confused with the bottom edge of this bezel.
  • a skyline A3 ( figure 6 ) which is substantially horizontal when the spectacle frame 10 is carried by the wearer in the orthostatic position, that is to say when the wearer is standing and that he holds his head straight.
  • the horizon line A3 here corresponds more particularly to the straight line which passes opposite the two pupils of the wearer. It is characteristic of the orientation of the spectacle frame 10 and the ophthalmic lens 20.
  • the ophthalmic lens 20 has a front optical face 21 convex and a concave rear optical face 22, and a peripheral edge 23 whose initial contour 27 ( figure 6 ) is generally circular.
  • this ophthalmic lens is intended to include, after machining its edge 23, an engagement rib 24 extending along a longitudinal profile 25 ( figure 2 curvilinear whose shape allows the interlocking of the ophthalmic lens 20 in the surrounding 11 corresponding to the spectacle frame 10.
  • This longitudinal profile 25 corresponds to a line running along the edge 23 of the lens and which joins a defined point of each cross section of the engagement rib 24. Each of these points is here defined by a rule which is uniform for the set of cross sections of the engagement rib 24.
  • the longitudinal profile 25 may correspond to one of the strands of the engagement rib 24, which extends over the one and / or either of the flanks of this interlocking rib and which is substantially parallel or coincident with the top of the interlocking rib.
  • This boxing frame 26 is more precisely defined as the rectangle which, on the one hand, is circumscribed to the orthogonal projection of the longitudinal profile deduced in the plane of the initial contour 27, and which, on the other hand, has two parallel sides intended to extend horizontally when the lens is worn by the wearer.
  • This boxing frame 26 has, at the intersection of its two diagonals, a geometric center C1 through which passes a central optical and geometric axis A1 of the lens ( figure 2 ).
  • the central axis A1 considered is substantially normal to the plane which is tangential to the front optical face 21 of the lens and which passes through the point of the front optical face 21 whose orthogonal projection in the plane of the initial contour 27 is the geometric center C1.
  • a contour reading device 1 such as, for example, the one shown in FIG. figure 1 .
  • This apparatus comprises an upper cover 2 covering the entire apparatus with the exception of a central upper portion accessible to the user, in which the spectacle frame 10 is arranged.
  • the contour reading apparatus 1 is intended to record the shape of the contours of the bezels 13 of the surrounds 11 of this eyeglass frame 10.
  • a frame 5 In the space left visible by the upper central opening of the cover 2, a frame 5 is visible.
  • a plate (not visible) can move in translation on the frame 5 along a transfer axis D1.
  • On this plate is rotatably mounted a turntable 6.
  • This turntable 6 is adapted to take two positions on the transfer axis D1, opposite each of the two surrounds 11 of the spectacle frame 10.
  • the turntable 6 has an axis of rotation B1 defined as the normal axis to the front face of the turntable 6 and passing through its center. It is adapted to pivot about this axis relative to the plate.
  • the turntable 6 further comprises an oblong slot 7 in the form of an arc of a circle through which a probe 8 protrudes.
  • This probe 8 comprises a support rod 8A with an axis perpendicular to the plane of the front face of the turntable 6 and, at its free end, a feeler pin 8B with an axis perpendicular to the axis of the support rod 8A.
  • This finger 8B is intended to follow by sliding or possibly rolling the bottom of the bezel 13 of each of the two surrounds 11 of the eyeglass frame 10, moving along the light 7.
  • the contour reading apparatus 1 comprises actuating means (not shown) adapted, firstly, to slide the support rod 8A along the lumen 7 in order to modify its radial position R with respect to the rotating axis B1 of the turntable 6, a second part, to vary the TETA angular position of the turntable 6 about its axis of rotation B1, and, thirdly, to position the probe finger 8B of the probe 8 at a greater or lesser altitude Z relative to the plane of the front face of the turntable 6.
  • actuating means (not shown) adapted, firstly, to slide the support rod 8A along the lumen 7 in order to modify its radial position R with respect to the rotating axis B1 of the turntable 6, a second part, to vary the TETA angular position of the turntable 6 about its axis of rotation B1, and, thirdly, to position the probe finger 8B of the probe 8 at a greater or lesser altitude Z relative to the plane of the front face of the turntable 6.
  • the contour reading apparatus 1 furthermore comprises an electronic and / or computer device 9 making it possible, on the one hand, to drive the actuating means of the contour reading apparatus 1, and, on the other hand, to acquire and record the coordinates ra i , tetaa i , za i of each probed point of the bezel 13.
  • a trimming apparatus 30 which is not the subject of the present invention.
  • a clipping apparatus well known to those skilled in the art, is for example described in the document US 6,327,790 or marketed by the Applicant under the trademark Kappa CTD.
  • such a trimming apparatus 30 generally comprises support means here formed by shafts 31 for holding and rotating the ophthalmic lens 20 around a locking pin A1 coincides with the central axis of the lens.
  • Such a trimming apparatus further comprises trimming means here formed by a machining tool 32 rotatably mounted about an axis of rotation A2 which is here substantially parallel to the locking axis A1, but which could also be inclined relative to this axis.
  • the machining tool 32 and / or the shafts 31 are provided with two relative mobilities, including a radial mobility that makes it possible to modify the spacing between the axis of rotation A2 and the blocking axis A1, and translational mobility. axial along an axis parallel to the blocking axis A1.
  • the trimming apparatus 30 further comprises an electronic and / or computer device (not shown) which is provided, on the one hand, with communication means with the electronic and / or computer device 9 of the contour reading device. 1, and, secondly, means for controlling the mobilities of the shafts 31 and of the machining tool 32.
  • This electronic and / or computer device makes it possible in particular to control, for each angular position of the lens 20 around of the locking pin A1, the radial spacing between the machining tool 32 and the locking pin A1, as well as the axial position of the edge 23 of the lens relative to the working surface of the machining tool 32.
  • the machining tool 32 is in this case constituted by a main wheel 33 of shape, that is to say having hollow, in the manner of a negative, a machining profile complementary to that to obtain relief on the flank 23 of the lens to be machined.
  • This main wheel 33 is here of revolution about the axis of rotation A2 and is provided with a beveling groove 34 capable of forming on the side 23 of the lens 20 a interlocking rib 24 ( figure 8A ) of complementary shape.
  • the diameter of the main grinding wheel will preferably be less than 25 millimeters.
  • This interlocking rib 24 is most often made to present, in cross section, a profile in the form of a dihedral, that is to say in the shape of an inverted V, which is why the interlocking rib 24 is commonly called bevel.
  • this interlocking rib may have different shapes in cross section, such as for example semi-circular or rectangular shapes.
  • the machining tool comprises a set of grinding wheels comprising, in addition to the above-mentioned main grinding wheel 33, an auxiliary bevel grinding wheel 35 provided with a bevelling groove 36 of depth and / or width less than the depth and / or width of the beveling groove 34 of the main grinding wheel 33.
  • This small beveling groove 36 may for example have a depth and width less than 0.3 millimeter to the depth and width of the beveling groove 34 of the main wheel 33.
  • the machining tool 32 comprises a grinder 37 having a cylindrical central portion 40 of revolution about the axis of rotation A2, and, on either side of this central portion 40, two portions of end 38, 39 conical of revolution about the axis of rotation A2 and arranged back-to-back.
  • These two end portions 38, 39 will then be able to successively machine the two sides of the engagement rib 24 of the ophthalmic lens 20.
  • these two end portions it will also be possible for these two end portions to be arranged facing each other. at a distance from each other.
  • the machining tool may be of another type. It may in particular be formed by a cutter or a knife rotatably mounted about the axis of rotation A2.
  • knife is meant a tool having, in the manner of a flat wick, a central shaft on each side of which radially extend, in the same plane, two blades whose free edges are able to machine the wafer. of the ophthalmic lens.
  • the process for preparing the ophthalmic lens is carried out in four main steps. It comprises, in particular, a step of acquiring the shape of an acquired longitudinal profile 12 of the bezel 13, a step of deducing the shape of a longitudinal profile derived from the interlocking rib 24, a step of determining the singular portions of freedom of the longitudinal profile deduced 25, and a step of trimming the ophthalmic lens 20.
  • the eyeglass frame 10 chosen by the future carrier is engaged in the reading apparatus 1 (FIG. figure 1 ).
  • the frame 10 is inserted between the pads 4 of the jaws 3, so that one of its entourages 11 is ready to be probed in a path starting by the insertion of the probe 8 between the two studs 4 enclosing the lower part of this entourage, then following the outline of the bezel 13 of this entourage 11.
  • the electronic and / or computer device 9 defines as zero the angular position and the altitude of the probe 8 when the feeler finger 8B is disposed between the two aforementioned studs 4.
  • the electronic and / or computer device 9 controls the rotation of the turntable 6 so that the feeler finger 8B of the probe 8 moves continuously along the bottom of the bezel 13.
  • the preservation of the contact of the probing finger 8B with the bottom of the bezel 13 is provided by the actuating means which exert on the probe 8 a radial return force directed towards the bezel 13.
  • This radial return force thus makes it possible to avoid that the feeler finger 8B does not go up along one or the other of the sides of the bezel 13 and it does not come out of it.
  • the feeler 8 is controlled in angular position around the axis of rotation B and is guided according to its radial coordinate and according to its altitude thanks to the shape here V of the bezel 13.
  • the electronic and / or computer device 9 detects the spatial coordinates ra i , teta 1 , za i of a plurality of points of the acquired longitudinal profile 12 of the bezel 13, for example 360 points, for storing a precise digital image of this profile.
  • This image in orthogonal projection in the plane of the initial contour 27 of the ophthalmic lens 20, is represented in dotted line on the figure 6 .
  • the database register comprises a plurality of records each associated with a referenced type of spectacle frames (that is to say a spectacle frame shape). More specifically, each record includes an identifier that corresponds to the referenced type of spectacle frames, and an array of values referencing the spatial coordinates of 360 characteristic points of the shape of a longitudinal profile of the bezel frames of glasses of the referenced type. So, for acquiring the spatial coordinates ra i , tetaa i , za i , of the acquired longitudinal profile 12, the operator can search the database for the record whose identifier corresponds to the spectacle frame selected by the wearer (for example at the means of the barcode of the mount). Then, the values referenced in this recording will then be read and transmitted to the electronic and / or computer device of the trimming apparatus 30.
  • a disadvantage generally found when using this acquisition method is that, since two frames of the same type rarely have exactly the same shape, the spatial coordinates acquired in the database may be slightly different from the actual coordinates of the data. corresponding points of the bezel. However, thanks to the invention and as will be explained below, these slight differences will not induce problems of nesting of the ophthalmic lens 20 in the entourage 11 of the frame 10 selected by the wearer.
  • the acquisition of point coordinates of the acquired longitudinal profile can be performed in a plane, for example on a photo of the wearer.
  • a digital photograph of the wearer equipped with his spectacle frame is acquired.
  • a second step we note on the acquired photo the shape of the inner contour of each surround of the eyeglass frame, for example by means of an image processing software.
  • the shape of the vertex ridge of the interlocking rib 24 is calculated so that this rib can to encase in the bezel 13 previously palpated. This shape will thus make it possible to determine an instruction to trim the ophthalmic lens 20.
  • This deduction step may be performed by calculation means of the electronic and / or computer device hosted by the contour reading device 1 or by those of the trimming apparatus 30, or by those of any other device capable of communicate with one and / or both of these devices 1.30.
  • the calculation means determine, as a function of the spatial coordinates ra i , teta i , z i of the points of the acquired longitudinal profile 12, the shape of the longitudinal profile deduced ( figure 6 ), that is to say the shape that will present the top edge of the interlocking rib 24 after trimming.
  • This form will allow the computing means of the electronic device and / or computer hosted by the trimming apparatus 30 to derive a set of clipping radius and an axial setpoint of clipping of the ophthalmic lens 20.
  • the deduced longitudinal profile 25 is here defined by 360 points whose spatial coordinates are denoted rs j , tetas j , zs j .
  • the constant k is calculated conventionally according to the architectures of the contour reading apparatus 1 and the contouring apparatus 30, as well as to the shapes of the cross sections of the bezel of the surround of the frame and the bevelling groove of the main grinding wheel 33.
  • This constant k makes it possible in particular to take into account the fact that, once the lens is nested in the surrounding area, the top of the interlocking rib (corresponding to the longitudinal profile deduced 25) is never in contact the bottom of the bezel (corresponding to the acquired longitudinal profile 12) but is slightly offset from the latter ( Figures 8A and 8B ).
  • the function f (tetas j ) can be chosen to be zero or constant or variable, to take into account a possible difference between the general camber of the lens and the bezel of the frame.
  • the choice of this function makes it possible in particular to modify the axial position of the engagement rib 24 on the edge 23 of the ophthalmic lens 20, so for example that the engagement rib 24 extends along the optical face. before the lens or rather in the middle of its slice.
  • the calculation means proceed to the detection of at least fifteen singular portions of freedom Z1-Z16 ( figure 9 ) of the longitudinal profile deduced 25.
  • the position of at least fifteen singular points of freedom PI is determined on the longitudinal profile deduced ( Figure 8B ) alternated with as many Pa points of support ( figure 8A ), so that the lens can then be machined in such a way that its engagement rib 24 is in contact with the bezel 13 at said bearing points Pa and out of contact with this interlocking rib 24 around said singular points of freedom PI (that is to say in the singular portions of freedom Z1-Z16).
  • the points of support are points where the interlocking rib 24 will be machined in a conventional and uniform manner, so that the nesting rib fits into the bezel 13, and that the singular points of freedom are points where the interlocking rib 24 will be machined in a particular and non-uniform manner, such that the interlocking rib does not fit completely into the bezel 13.
  • the detection of the points of support Pa and the singular points of freedom PI is carried out independently, on the one hand, of the shape of the first and second longitudinal profiles 12, 25, and, on the other hand, of the orientation of the horizon line of the reference frame of the eyeglass frame 10 and therefore of the orientation of the horizon line of the optical reference frame of the ophthalmic lens 20.
  • said singular points or sections of freedom are chosen to be spaced not more than twenty millimeters along the curvilinear abscissa along the interlocking rib 24 or at most thirty degrees around a geometric or optical axis of the lens. ophthalmic 20, namely here the central axis A1.
  • the number of points or singular sections of freedom will then be chosen between twenty and fifty.
  • the determination of the positions of the singular points of freedom PI can be carried out in various ways.
  • the calculation means can select on the longitudinal profile deduced 25 sixteen singular points of freedom P1-P16 regularly spaced around the central axis A1, that is to say having angular coordinates separated two by two from an angle E1 separation equal to 22.5 degrees.
  • the singular starting point of freedom P1 of this distribution (which determines the position of the other fifteen singular points of freedom P2-P16) may be chosen randomly by the calculation means or may be predetermined. Its angular position can for example be set at 135 degrees.
  • the calculation means then define as singular portions of freedom Z1-Z16 of the longitudinal profile deduced 25, the sixteen parts of this profile which are centered on the sixteen singular points of freedom P1-P16 and which have lengths F2 less than 12 millimeters. These singular portions of freedom have lengths F2 which may be identical, for example equal to 1 millimeter, or different from each other.
  • each point of support Pa is defined as a point of the longitudinal profile deduced 25 located in the center, curvilinear abscissa, two singular points of freedom.
  • the calculation means can select a larger number N of singular points of freedom P17-P20 regularly distributed along the longitudinal profile deduced 25, that is to say spaced from each other of the same length d in abscissa curvilinear.
  • N is chosen equal to twenty-seven. Of course, it could be chosen equal to a different number N, greater than or equal to fifteen, preferably between 20 and 50. For the sake of clarity, only four of these singular points of freedom are referenced on the figure 10 .
  • the starting singular point of freedom P7 of this distribution can be chosen randomly by the calculation means or can be predetermined. Its angular position can for example be set at 240 degrees. Once positioned on the longitudinal profile deduced 25, this singular point of freedom P17 allows the computing means to position the twenty-six other singular points of freedom P18-P20 on the longitudinal profile.
  • the calculation means then define as singular portions of freedom Z17-Z20 of the longitudinal profile deduced 25, the twenty-seven parts of this profile which are centered on the twenty-seven singular points of freedom P17-P20 and which have predetermined lengths, for example equal to 2 millimeters.
  • said singular points of freedom are chosen to be spaced at most twenty millimeters in curvilinear abscissa along the interlocking rib 24 or at most thirty degrees around the central axis A1.
  • the calculation means can select a very large number of singular points of freedom P37-P40. For the sake of clarity, only three of these singular points of freedom are referenced in this figure.
  • the calculation means can in particular select a number of singular points of freedom P37-P40 such that, given their lengths, the corresponding singular portions of freedom Z37-Z40 are all contiguous, so that each end of a singular portion of freedom is confused with the corresponding end of another singular portion of liberty.
  • the calculation means can distribute these singular freedom portions Z37-Z40 on the longitudinal profile deduced 25 so that they are regularly spaced curvilinear abscissa along this profile or they are regularly angularly spaced around of the central axis A1.
  • the calculation means can determine the total length of the longitudinal profile deduced 25, then divide this length by thirty in order to regularly spacing the thirty singular points of freedom along this longitudinal profile.
  • Each singular portion of freedom is then defined as being centered on a singular point of freedom and having a length equal to one thirtieth of the total length of the longitudinal profile deduced.
  • the calculation means may regularly space the thirty singular points of freedom around the central axis A1 with an angular spacing of 12 degrees.
  • Each singular portion of freedom will then be defined as being the portion of the longitudinal profile deduced 25 centered on a singular point of freedom, the ends of which are angularly spaced from each other by 12 degrees.
  • the calculation means can randomly select at least fifteen singular points of freedom P41-P55 on the first longitudinal profile 25. More particularly, the number N of singular points of freedom being fixed, for example equal to 15, the calculation means can randomly choose fifteen points from the 360 points of the longitudinal profile deduced 25. However, this choice can be made provided that these points are separated from each other by a separation angle greater than 5 degrees.
  • the calculation means then define as singular portions of freedom Z41-Z55 of the longitudinal profile deduced 25, the parts of this profile which are centered around these singular points of freedom P41-P55 and which have predetermined lengths, for example equal to 12 millimeters.
  • the calculation means can distribute the singular points of freedom on the longitudinal profile deduced according to the geometry of a third longitudinal profile 26 whose shape is a function of that of the longitudinal profile deduced 25. More specifically, the calculation means can distribute at least fifteen singular portions of freedom Z21-Z31 on the longitudinal profile deduced 25 so that the corresponding portions of the third longitudinal profile 26 are regularly spaced around the central axis A1 or are evenly spaced along the third profile longitudinal 26.
  • the calculation means can select first sixteen singular points of freedom P121-P137 regularly spaced along the boxing frame 26 (which forms the third longitudinal profile), of the same length of. Then, the calculation means establish a rule of correspondence between the points of this boxing frame 26 and the points of the longitudinal profile deduced 25.
  • a point of the longitudinal profile deduced 25 is defined as being associated with a point of the boxing frame 26 if these two points have the same angular position around the blocking axis A1, that is to say if these two points are located on the same line passing through the geometric center C1 boxing frame 26.
  • the means of calculation then deduce the positions of sixteen second singular points of freedom P21-P37 associated with the first sixteen singular points of freedom P121-P137, then they define as singular portions of freedom Z21-Z37 of the longitudinal profile deduced 25, the sixteen parts of this profile which are centered around these second singular points of freedom P21-P37 and which have predetermined lengths, for example equal to 3 millimeters.
  • the calculation means can determine the position of at least one remarkable point (having a radius of curvature less than a threshold) or at least one angular point J1-J4 of a third longitudinal profile 26 (derived from the longitudinal profile acquired 12 or inferred 25), then distributing the singular portions of freedom Z56-Z71 on the longitudinal profile deduced 25 so that at least a corresponding portion of the third longitudinal profile 26 is located less than 5 millimeters from a sharp point J1-J4 or a remarkable point of the third longitudinal profile 26.
  • a singular portion of freedom Z56-Z71 is here considered to be located within 5 millimeters of a sharp point or point of the third longitudinal profile 26 if at least one of its ends is less than 5 millimeters away. one of these points.
  • the calculation means can select sixteen singular points of freedom P56-P71 distributed, for at least half of them, less than 5 millimeters from the intersections of the diagonals of the boxing frame 26 with the longitudinal profile deduced 25.
  • the calculation means then define as singular portions of freedom Z56-Z71 of the longitudinal profile deduced 25, the sixteen parts of this profile which are centered on these singular points of freedom P56-P71 and which have predetermined lengths, for example equal to 0.5 millimeters.
  • the calculation means can distribute the singular points of freedom P72-P87 on the longitudinal profile deduced so that at least one of these singular points of freedom is located less than 5 millimeters from a very curved portion of this longitudinal profile deduced 25.
  • the calculation means determine the radii of curvature Rc j of the longitudinal profile deduced at its 360 defined points.
  • the calculation of the radii of curvature is made in two dimensions, in the boxing frame plane 26.
  • this calculation could also be made in space, in three dimensions.
  • the calculation means can deduce from the coordinates of the 360 points of the deduced longitudinal profile 25, a function f (tetas j ) representative of the longitudinal profile deduced 25, in polar coordinates and twice differentiable.
  • the calculation means compare the values of 360 calculated radii of curvature Rc j with a threshold value.
  • this threshold value is predetermined and stored in the calculation means. It is then preferentially chosen less than 20 millimeters, here equal to 10 millimeters.
  • this threshold value may be determined as a function of the calculated values of the radii of curvature Rc j .
  • the threshold value may be chosen as a function of the overall shape of the longitudinal profile deduced 25.
  • the threshold value may be chosen according to the mean and / or the standard deviation and / or or the median of the 360 calculated radii of curvature Rc j , or depending on the values of the smaller radii of curvature (typically as a function of the 10 to 60 smaller radii of curvature).
  • this threshold value may be chosen so that a single radius of curvature is less than this value.
  • the comparison of the radii of curvature Rc j calculated with the threshold value of 10 millimeters makes it possible here to identify four remarkable points H1-H4 on the longitudinal profile deduced at which the curvature radii of the profile are lower. at this threshold value.
  • the calculation means can then select the sixteen singular points of freedom P72-P87 of the longitudinal profile deduced 25 located on half-lines of the boxing frame plane which are born at the geometric center C1 and which are inclined by 4 or 12 degrees by relation to the four half-lines which are born at the level of the geometric center C1 and which pass through the remarkable points H1-H4. At least half of these sixteen singular points of freedom are then located within 5 millimeters of the remarkable points.
  • the calculation means then define as singular portions of freedom Z72-Z87 of the longitudinal profile deduced 25, the sixteen parts of this profile which are centered around these singular points of freedom P72-P87 and which have predetermined lengths, for example equal to 1 millimeter.
  • the singular portions of freedom are determined manually by the operator.
  • a man-machine interface including in particular a touch screen and a stylus, is made available to the operator.
  • the interface is equipped with an electronic device able, on the one hand, to communicate with the electronic and / or computer device of the contour reading device 1 or with that of the trimming apparatus 30, and, on the other hand, to display images on the screen.
  • the electronic device is particularly adapted to display on the screen an image of the longitudinal profile deduced 25.
  • the operator can therefore point with the stylus on the screen at least fifteen singular portions of freedom that the device stores and communicates to the computing means.
  • the trimming apparatus 30 trims the ophthalmic lens 20. This step will be described here with reference to the variant shown in FIG. figure 9 .
  • the support shafts 31 of the lens and / or the trimming tool 32 are driven according to a clipping radius setpoint which differs from the initially planned trimming radius setpoint (according to the longitudinal profile deduced 25) in the sixteen singular portions of freedom Z1-Z16.
  • the calculating means correct the shape of the longitudinal profile deduced in the sixteen singular portions of freedom Z1-Z16.
  • the calculation means reduce the values of the radial coordinates rs j points of the initial deduced longitudinal profile located in the singular portions of freedom Z1-Z16. This reduction is made in such a way that the new longitudinal profile deduced 29 is continuous, that it has no angular points or cusp points, and that it deviates in each singular portion of freedom Z1-Z16 by more than 0 , 05 millimeters and less than 0.3 millimeters of the longitudinal profile deduced initial 25. The reduction is here made such that the maximum deviation between the new longitudinal profile deduced 29 and the initial derived longitudinal profile is equal to 0.1 millimeter.
  • angular point is meant a point of a profile to which the two half-tangents form a non-flat angle.
  • curb point is also meant a point of a profile to which the two half-tangents are opposite.
  • the lens is cut off in a conventional manner, by means of the main grinding wheel 33 of the trimming apparatus 30, so that the apex of the interlocking rib 24 ( Figure 7A ) extends according to the new longitudinal profile deduced 29.
  • the nesting rib 24 is then profiled, that is to say that it has a uniform section over its entire length.
  • the new longitudinal profile deduced 29 comprises sixteen singular portions of freedom Z1-Z16 in each of which the difference between this longitudinal profile deduced and the acquired longitudinal profile 12 is non-uniform. More particularly, the difference between the new longitudinal profile deduced 29 and the acquired longitudinal profile 12 evolves to take at each singular point of freedom PI a value at least 0.05 millimeter greater than the value of this difference at the two points d Pa support that are him directly consecutive.
  • the new longitudinal profile deduced 29 is such that, on any portion of this longitudinal profile 29 having a length of twenty millimeters on the abscissa curvilinear or contained in an angular sector of thirty degrees about the central axis A1, the difference between the new longitudinal profile deduced 29 and the acquired longitudinal profile 12 evolves between a maximum value of difference and a minimum difference value whose difference is greater than or equal to 0.05 millimeters and is less than or equal to 0, 3 mm (this difference is here equal to 0.1 mm).
  • the new longitudinal profile deduced 29 has sixteen points of support Pa ( figure 8A ) alternated with so many singular points of freedom Figure 8B ), each point of support Pa having a distance to the acquired longitudinal profile 12 which is equal to the global value k, which is common to the sixteen points of support Pa to 0.02 millimeter (due to the clipping inaccuracies), and each singular point of freedom PI having a deviation from the first longitudinal profile whose value differs from said global value k by a clearance of 0.1 millimeters.
  • the engagement rib 24 of the lens has, on the one hand, sixteen support sections Sa, situated at the level of the sixteen bearing points Pa, at which it is in contact with the bevel 13, alternated with, on the other hand, sixteen singular sections of freedom SI, situated at the level of the sixteen singular points of freedom P1-P16, at which it is out of contact with the bezel.
  • the feeler of the bezel and / or the clipping of the lens are imperfectly made and that, therefore, the outline of the lens is slightly too large compared to that of the entourage 11, the space located at the level of the singular sections of freedom SI allows the entourage to deform, so that the lens remains mountable in the entourage.
  • the calculating means can acquire in the database the shape of this new longitudinal profile deduced 29, so as to directly machine the lens according to this profile.
  • the device The electronic and / or computer device of the trimming apparatus 30 can transmit these data to the register so that it stores them in a record whose identifier corresponds to the spectacle frame selected by the wearer.
  • the support shafts 31 of the lens and / or the trimming tool 32 are controlled so that the section of the interlocking rib 24 is locally narrowed in width and / or in height ( Figure 7B ) in the sixteen singular portions of freedom Z1-Z16.
  • the support shafts 31 of the lens and / or the trimming tool 32 are controlled according to the first longitudinal profile 25, so as to produce on the edge 23 of the lens 20 a profiled engagement rib 24, that is to say of uniform section, except in the singular portions of freedom Z1-Z16.
  • This embodiment has a particular advantage. Indeed, the fact of only decreasing the size of the section of the interlocking rib 24 without modifying the instruction of clipping radius makes it possible to ensure that the distance between the foot of the nesting rib 24 (part of the edge 23 of the lens bordering the interlocking rib 24) and the inner face of the surrounding 11 of the spectacle frame 10 is uniform all around the lens. As a result, no unsightly gap appears between the edge of the lens and the inner face of the surround 11.
  • the trimming of the ophthalmic lens 20 comprises a first machining phase of the engagement rib 24 with a uniform section and a second trimming phase of the engagement rib 24 in each singular portion of freedom Z1-Z16.
  • the first machining phase is carried out by means of the main grinding wheel 33 of shape (shown in FIG. figure 3 ) according to the longitudinal profile deduced 25, while the second phase is carried out using the auxiliary grinding wheel 35 (shown in FIG. figure 4 ).
  • the bevelling groove 36 of the auxiliary beveling wheel 35 is brought into contact with the engagement rib 24, at one of the ends of the singular portion of freedom considered. Then the support shafts 31 of the lens and / or the trimming tool 32 are controlled so that the beveling groove 36 can machine and reduce the height and width of the engagement rib 24 in this singular portion of freedom. . As shown in Figure 7B this control is carried out in such a way that the height and the width of the interlocking rib 24 are reduced by at most 0.3 millimeters and that the interlocking rib 24 does not has no discontinuity, especially at the ends of each singular portion of freedom Z1-Z16.
  • the interlocking rib 24 is such that, on any portion of this interlocking rib with a length of twenty millimeters on the abscissa curvilinear or contained in an angular sector of thirty degrees around the central axis A1, its section evolves in width or height between a maximum value of width or height and a minimum value of width or height whose difference is greater than or equal to 0.05 millimeters.
  • This mode of contouring of the ophthalmic lens 20 is not limiting.
  • the trimming of the interlocking rib 24 may in particular be made in a different manner.
  • the support shafts 31 of the lens and / or the trimming tool 32 can be controlled in each singular portion of freedom Z1-Z16 so as to shift progressively axially (along the axis of blocking A1) relative to the position they had during the first pass of the main wheel 33.
  • one of the flanks of the interlocking rib 24 is machined by one of flanks of the beveling groove 34 of the main grinding wheel 33, which has the effect of reducing the height and the width of the interlocking rib 24.
  • the trimming of the interlocking rib 24 can be achieved using a cylindrical portion of the main grinding wheel 33, by planing the top of the interlocking rib 24, so as to break its edge. top, or even locally remove the interlocking rib 24. In this embodiment, only the height of the interlocking rib 24 is modified.
  • the roughing and trimming of the interlocking rib 24 may be simultaneously performed.
  • the support shafts 31 of the lens and / or the trimming tool 32 may be controlled so as to present axial reciprocating movements (along the locking pin A1).
  • these reciprocating movements will plan the two flanks of the interlocking rib 24.
  • the electronic and / or computer device of the trimming apparatus 30 will control the radial mobility of the grinder and / or shafts 31 to position a first conical end portion 39 of the grinder 37 against the side 23 of the lens, the side of its front face. Then, the grinder 37 and the support shafts 31 of the lens will be controlled to form the front flank of the engagement rib 24.
  • this steering will be realized so that the leading edge of the nesting rib 24 is located at a constant distance from the optical front face of the lens 20, except in the singular portions of freedom where it will deviate from this face.
  • the electronic and / or computer device of the trimming apparatus 30 will control the radial mobility of the grinder and / or the shafts 31 to position a second conical end portion 38 of the grinder 37 against the slice. the lens, on the side of its back side. Then, the grinder 37 and the support shafts 31 of the lens will be driven to form the trailing edge of the engagement rib 24.
  • this steering will be realized so that the trailing edge of the interlocking rib is located at a constant distance from the front face of the lens, except in the singular portions of freedom where it will approach the front face.
  • the nesting rib of the Ophthalmic lens will thus present a local narrowing of height and / or width in each singular portion of freedom.
  • the electronic and / or computer device of the trimming apparatus 30 may control the radial mobility of the machining tool and / or the shafts 31 so as not only to reduce in width and / or height the section of the engagement rib 24 on each singular portion of freedom but also to machine the feet of the engagement rib 24 (by determining the shape of a new longitudinal profile from the longitudinal profile deduced, according to a method of type of that mentioned above).
  • the calculating means can acquire in the database the shape of this longitudinal profile deduced 25, so as to directly machine the lens according to this profile and to trim it to the singular points of freedom P1-P16.
  • this ophthalmic lens Following the shaping of this ophthalmic lens, it will be possible to trim a second ophthalmic lens for mounting in a second surround of said spectacle frame 10, forming on its edge a generally profiled nesting rib. This rib will then be made so that it follows a symmetrical longitudinal profile of the longitudinal profile deduced 25 and so that each of its sections has a shape identical to that of the corresponding section (by symmetry) of the interlocking rib 24 of the first lens.
  • the two surrounds of the spectacle frame 10 are not perfectly symmetrical while the two lenses have been machined in a symmetrical manner, the spaces between the interlocking ribs of the lenses and the bezels of the surrounds at level of singular sections of freedom SI allow the two lenses to be mountable in their surroundings.
  • This invention will particularly find a particularly advantageous application when it will be implemented by customers (opticians) called “outsourcers” subcontracting the manufacture and trimming of lenses.
  • a client terminal installed on the side of a customer for the control of lenses
  • a terminal-manufacturer installed on the side of a lens manufacturer for the manufacture and trimming of lenses.
  • the client terminal comprises computer means for recording and transmitting control data of the ophthalmic lens 20, for example via an IP communication protocol (Internet type).
  • This control data includes visual correction prescription data (eg optical power, centering data, etc.) and mount data.
  • the terminal-manufacturer comprises meanwhile computer means for receiving and recording the order data transmitted by the terminal-client. It further comprises a device for manufacturing the ophthalmic lens in accordance with the prescription data, comprising, for example, means for molding the lens and / or for machining at least one of the optical faces of the lens. It also includes a device for trimming this ophthalmic lens in accordance with the data relating to the frame. This clipping device is in particular designed to implement the fourth step of the method described above.
  • the client determines a reference of the eyeglass frame 10 and then transmits via the terminal-client control data of a lens (the data comprising said reference).
  • the second step is performed by means of a database register equipping the terminal-manufacturer, each record of which is associated with a type of spectacle frames 10 and contains, on the one hand, a reference of this type of frames, and, on the other hand, the shape of an acquired longitudinal profile 12 common to the surrounds 11 of this type of frames.
  • the manufacturer searches in this database register, using the reference acquired in the first step, the shape of the acquired longitudinal profile 12 of the eyeglass frame selected by the wearer. He then deduces from the shape of the acquired longitudinal profile 12 the shape of the longitudinal profile deduced according to the method previously stated.
  • the manufacturer determines on this longitudinal profile deduced 25 at least fifteen singular portions of freedom, then it diverts the lens specifically in these fifteen singular portions of freedom.
  • the lens will be easily mountable "first time” in the frame selected by the wearer. As a result, the lens should not be returned to the manufacturer for resumption, which is always long and expensive.
  • provision may be made for the acquisition step of the longitudinal profile acquired by the manufacturer-terminal to comprise two steps, including a first step of determining by the customer the shape of the acquired longitudinal profile 12, for example by probing the surrounding of the eyeglass frame, and a second step of transmission-reception of control data comprising the shape of the acquired longitudinal profile 12.
  • the determination of the positions of the singular portions on the acquired longitudinal profile 12 may indifferently be carried out by the manufacturer or by the customer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Eyeglasses (AREA)
  • Prostheses (AREA)

Claims (19)

  1. Optische Ausstattung mit einem Brillenglas (20), das eine Kante (23) mit einer Einsetzrippe (24) umfasst, dadurch gekennzeichnet, dass die Einsetzrippe (24) mindestens 15 Auflageabschnitte (Sa) umfasst, die sich mit genau so vielen freien singulären Teilabschnitten (SI) abwechseln, wobei die freien singulären Teilabschnitte (SI) in Bezug zu den Auflageabschnitten (Sa) um mindestens 0,05 mm hinsichtlich der Breite und/oder der Höhe verengt sind.
  2. Optische Ausstattung nach Anspruch 1, bei der die freien singulären Teilabschnitte (SI) höchstens 20 mm in Bogenlänge entlang der Einsetzrippe (24) oder höchstens 30 Grad um eine zentrale geometrische oder optische Achse (A1) des Brillenglases (20) beabstandet sind.
  3. Optische Ausstattung nach einem der vorausgehenden Ansprüche, bei der die Anzahl an freien singulären Teilabschnitten (SI) zwischen 20 und 50 beträgt.
  4. Optische Ausstattung nach einem der vorausgehenden Ansprüche, bei der die Verengung hinsichtlich Breite und/oder Höhe der Einsetzrippe (24) im gesamten freien singulären Teilabschnitt (SI) kleiner gleich 0,3 mm beträgt.
  5. Optische Ausstattung nach einem der vorausgehenden Ansprüche, bei der die freien singulären Teilabschnitte (SI) in Bogenlänge entlang der Einsetzrippe (24) oder angulär um eine zentrale geometrische oder optische Achse (A1) des Brillenglases (20) gleichmäßig beabstandet sind.
  6. Optische Ausstattung nach einem der vorausgehenden Ansprüche, bei der sich die Einsetzrippe (24) gemäß einem zweiten krummlinigen Längsprofil (25) erstreckt, von dem ein drittes Längsprofil (26) abgeleitet werden kann, das sich vom zweiten Längsprofil (25) unterscheidet und bei dem jeder Punkt einem Punkt des zweiten Längsprofils (25) zugeordnet ist, wobei die freien singulären Teilabschnitte (SI) auf Punkte des zweiten Längsprofils (25) verteilt sind, deren zugeordneten Punkte des dritten Längsprofils (26) in Bogenlänge entlang dieses dritten Längsprofils (26) gleichmäßig beabstandet sind.
  7. Optische Ausstattung nach einem der Ansprüche 1 bis 5, bei der sich die Einsetzrippe (24) gemäß eines krummlinigen zweiten Längsprofils (25) erstreckt, das mindestens einen bedeutenden Punkt (H1-H4) aufweist, an dem der Krümmungsradius des zweiten Längsprofils (25) kleiner oder gleich einem Grenzwert ist, wobei mindestens einer der freien singulären Teilabschnitte (SI) weniger als 5 mm vom bedeutenden Punkt (H1-H4) in Bogenlänge entlang des zweiten Längsprofils (25) entfernt liegt.
  8. Optische Ausstattung mit einem Brillenglas (20), das eine Kante (23) mit einer Einsetzrippe (24) umfasst, dadurch gekennzeichnet, dass die Einsetzrippe (24) derart ist, dass sich ihr Querschnitt über die gesamte Länge dieser Einsetzrippe hinweg mit einer Länge von 20 mm in Bogenlänge oder innerhalb eines Winkelbereichs von 30 Grad um eine zentrale geometrische oder optische Achse (A1) des Brillenglases (20) hinsichtlich Breite oder Höhe zwischen einem maximalen Breiten- oder Höhenwert und einem minimalen Breiten- oder Höhenwert bewegt, deren Differenz größer oder gleich 0,05 mm ist.
  9. Optische Ausstattung mit:
    - einem Brillengestell (10), das mit einer Einfassung (11) mit einem im Wesentlichen profilierten Rille (13) versehen ist, der sich entlang einem ersten krummlinigen Längsprofil (12) erstreckt,
    - einem Brillenglas (20) mit einer Kante (23), die mit einer profilierten Einsetzrippe (24) versehen ist, die sich entlang einem zweiten krummlinigen Längsprofil (29) erstreckt und sich dazu eignet, sich in den Rille (13) einzufügen,
    dadurch gekennzeichnet, dass das zweite Längsprofil (29) derart ist, dass sich die Abweichung über den gesamten Abschnitt des zweiten Längsprofils (29) mit einer Länge von 20 mm in Bogenlänge oder innerhalb eines Winkelbereichs von 30 Grad um eine zentrale geometrische oder optische Achse (A1) des Brillenglases (20) zwischen dem zweiten Längsprofil (29) und dem ersten Längsprofil (12) zwischen einem maximalen Abweichwert und einem minimalen Abweichwert bewegt, deren Differenz größer oder gleich 0,05 mm beträgt.
  10. Optische Ausstattung nach einem der Ansprüche 8 und 9, bei der die Differenz zwischen dem maximalen und dem minimalen Wert kleiner als 0,3 mm ist.
  11. Präparationsverfahren eines in eine Einfassung (11) eines Brillengestells (10) zu montierenden Brillenglases (20), das umfasst:
    - einen Erfassungsschritt eines ersten Längsprofils (12) der Einfassung (11),
    - einen Zuschneideschritt des Brillenglases (20) mit Bildung an seiner Kante (23) einer im Wesentlichen profilierten Einsetzrippe (24) mit einem gewünschten Querschnitt und welche sich gemäß eines vom ersten Längsprofil (12) abgeleiteten zweiten Längsprofils (25) erstreckt ,
    dadurch gekennzeichnet, dass das Verfahren einen Ermittlungsschritt am zweiten Längsprofil (25) von mindestens 15 singulären freien Punkten (PI) umfasst, die sich mit genau so vielen Auflagepunkten (Pa) abwechseln,
    und dadurch, dass im Laufe des Zuschneideschritts die Einsetzrippe (24) gebildet wird, um den singulären freien Punkten (PI) singuläre freie Abschnitte (SI) gegenüberzustellen und den Auflagepunkten (Pa) Auflageabschnitte (Sa), wobei die singulären freien Teilabschnitte (SI) in Breite und/oder Höhe in Bezug zu den Auflageabschnitten (Sa) verengt sind.
  12. Präparationsverfahren eines in eine Einfassung (11) eines Brillengestells (10) zu montierenden Brillenglases (20), das umfasst:
    - einen Erfassungsschritt eines ersten Längsprofils (12) der Einfassung (11), und
    - einen Zuschneideschritt des Brillenglases (20) mit Bildung an seiner Kante (23) einer im Wesentlichen profilierten Einsetzrippe (24) mit einem gewünschten Querschnitt und welche sich gemäß eines vom ersten Längsprofil (12) abgeleiteten zweiten Längsprofils (29) erstreckt,
    dadurch gekennzeichnet, dass das Verfahren einen Ermittlungsschritt am zweiten Längsprofil (29) von mindestens 15 singulären freien Punkten (PI) umfasst, die sich mit genau so vielen Auflagepunkten (Pa) abwechseln,
    und dadurch, dass im Laufe des Zuschneideschritts die Einsetzrippe (24) gebildet wird, damit sich die Abweichung zwischen dem zweiten Längsprofil (29) und dem ersten Längsprofil (12) so entwickelt, dass sie in jedem singulären freien Punkt (PI) einen Wert annimmt, der mindestens um 0,05 mm größer ist als der Wert dieser Abweichung an den beiden Auflagepunkten (Pa), die ihm direkt folgen.
  13. Verfahren nach einem der zwei vorausgehenden Ansprüche, bei dem die Ermittlung der Auflagepunkte (Pa) und der singulären freien Punkte (PI) von der Form des ersten und zweiten Längsprofils (12, 25; 29) unabhängig ist.
  14. Verfahren nach dem vorausgehenden Anspruch, bei dem die Ermittlung der Auflagepunkte (Pa) und der singulären freien Punkte (PI) von der Horizontlinie (A3) des Referenzsystems für das Brillengestell (10) und von der Horizontlinie des optischen Referenzsystems für das Brillenglas (20) unabhängig ist.
  15. Verfahren nach einem der Ansprüche 11 bis 14, bei dem man nach dem Ermittlungsschritt in einem Datenbankregister, in dem jeder Datensatz einem bestimmten und referenzierten Typ von Brillengestell (10) zugeordnet ist und die Form des zweiten Längsprofils (25; 29) enthält, einen Datensatz sucht, der dem jeweiligen Brillengestell entspricht und man in diesem Datensatz die Positionen der singulären freien Punkte (PI) und der Auflagepunkte (Pa) am zweiten Längsprofil (25; 29) schreibt.
  16. Verfahren nach einem der Ansprüche 11 bis 15, bei dem die singulären freien Punkte (PI) im Laufe des Ermittlungsschrittes willkürlich auf das zweite Längsprofil (25; 29) verteilt sind.
  17. Verfahren nach einem der Ansprüche 11 bis 15, bei dem man, um die Auflagepunkte (Pa) und singulären freien Punkte (PI) zu ermitteln, ein Datenbankregister abliest, in dem jeder Datensatz einem bestimmten und referenzierten Typ von Brillengestell (10) zugeordnet ist und zum einen die Form eines zweiten Längsprofils (25; 29) enthält, das diesem referenzierten Typ von Brillengestell entspricht, und zum anderen die Position auf diesem zweiten Längsprofil (25; 29) der Auflagepunkte (Pa) und singulären freien Punkte (PI).
  18. Verfahren nach einem der Ansprüche 11 bis 17, das mithilfe eines Systems umgesetzt wird, das einerseits einen auf der Kundenseite installierten Kunden-Terminal mit Datenverarbeitungsmitteln zum Speichern und Senden der Bestelldaten des Brillenglases (20) umfasst, wobei diese Bestelldaten relative Daten zum Brillengestell umfassen, und andererseits einen auf der Herstellerseite installierten Hersteller-Terminal mit Datenverarbeitungsmitteln zum Empfangen und Speichern der vom Kunden-Terminal übertragenen Bestelldaten, sowie eine zum Umsetzen des Zuschneideschrittes konzipierte Zuschneidevorrichtung für dieses gefertigte Brillenglas, wobei der Erfassungsschritt umfasst:
    - einen Ermittlungsschritt durch den Kunden des ersten Längsprofils (12) der Einfassung des Brillengestells (10), und
    - einen Sendeschritt durch den Kunden-Terminal und einen Empfangsschritt durch den Hersteller-Terminal der Bestelldaten, wobei diese Daten das erste Längsprofil (12) enthalten.
  19. Verfahren nach einem der Ansprüche 11 bis 17, das mithilfe eines Systems umgesetzt wird, welches einerseits einen auf der Kundenseite installierten Kunden-Terminal mit Datenverarbeitungsmitteln zum Speichern und Senden der Bestelldaten des Brillenglases (20) umfasst, wobei diese Bestelldaten relative Daten zum Brillengestell umfassen, und andererseits einen auf der Herstellerseite installierten Hersteller-Terminal mit Datenverarbeitungsmitteln zum Empfangen und Speichern der vom Kunden-Terminal übertragenen Bestelldaten, sowie eine zum Umsetzen des Zuschneideschrittes konzipierte Zuschneidevorrichtung für dieses gefertigte Brillenglas, wobei der Erfassungsschritt umfasst:
    - einen Ermittlungsschritt durch den Kunden einer Referenz des Brillengestells (10),
    - einen Sendeschritt durch den Kunden-Terminal und einen Empfangsschritt durch den Hersteller-Terminal der Bestelldaten, wobei diese Daten diese Referenz enthalten, und
    - einen Suchschritt durch den Hersteller-Terminal in einem Datenbankregister, in dem jeder Datensatz einem bestimmten Typ von Brillengestell (10) zugeordnet ist und eine Referenz dieses Brillengestells und das erste Längsprofil (12) der Einfassung dieses Brillengestells enthält, eines Datensatzes, der der jeweiligen Referenz des Brillengestells zugeordnet ist.
EP08872556A 2008-01-28 2008-12-24 Sichtgerät mit brillenglas mit teilweise beschnittener einsatzrippe und verfahren zur herstellung eines derartigen glases Active EP2247408B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0800451A FR2926897B1 (fr) 2008-01-28 2008-01-28 Equipement visuel comportant une lentille ophtalmique dont la nervure d'emboitement est localement rognee et procede de preparation d'une telle lentille
PCT/FR2008/001824 WO2009103910A2 (fr) 2008-01-28 2008-12-24 Équipement visuel comportant une lentille ophtalmique dont la nervure d'emboîtement est localement rognée et procédé de préparation d'une telle lentille

Publications (2)

Publication Number Publication Date
EP2247408A2 EP2247408A2 (de) 2010-11-10
EP2247408B1 true EP2247408B1 (de) 2011-07-06

Family

ID=39884887

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08872556A Active EP2247408B1 (de) 2008-01-28 2008-12-24 Sichtgerät mit brillenglas mit teilweise beschnittener einsatzrippe und verfahren zur herstellung eines derartigen glases

Country Status (5)

Country Link
US (1) US8672479B2 (de)
EP (1) EP2247408B1 (de)
AT (1) ATE515368T1 (de)
FR (1) FR2926897B1 (de)
WO (1) WO2009103910A2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2943427B1 (fr) * 2009-03-17 2011-04-01 Essilor Int Procede de decoupe d'une pastille a appliquer sur un substrat courbe

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE16232E (en) * 1925-12-22 Island
US1600605A (en) * 1920-05-17 1926-09-21 Bausch & Lomb Ophthalmic mounting
IT8130628V0 (it) * 1981-03-05 1981-03-05 Desil Occhialeria S P A Cerchio in metallo con guarnizione di materia plastica particolarmente per montature per occhiali.
JP3276866B2 (ja) * 1996-12-27 2002-04-22 ホーヤ株式会社 眼鏡加工方法及び眼鏡フレーム
CN1105980C (zh) * 1998-02-03 2003-04-16 西乡刚 眼镜试戴模拟方法
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

Also Published As

Publication number Publication date
FR2926897B1 (fr) 2010-03-19
WO2009103910A3 (fr) 2009-10-22
ATE515368T1 (de) 2011-07-15
FR2926897A1 (fr) 2009-07-31
WO2009103910A2 (fr) 2009-08-27
US8672479B2 (en) 2014-03-18
EP2247408A2 (de) 2010-11-10
US20100309429A1 (en) 2010-12-09

Similar Documents

Publication Publication Date Title
EP2247407B9 (de) Verfahren zur herstellung einer kontaktlinse mit besonderer verarbeitung von deren fassungsrippe
EP2305423B9 (de) Verfahren zur Verarbeitung eines Sollwerts zum Konturfräsen einer Sehlinse
EP2305424B1 (de) Verarbeitungsmethode eines Sollwerts zum Konturfräsen einer Sehlinse
EP2786202B1 (de) Process zur vorbereitung einer ophthalmischen linse
EP2210703B1 (de) Brillenglasbearbeitungsvorrichtung
EP2410372B1 (de) Berechnungsverfahren eines Sollwerts zum Facetten- oder Rillenschleifen einer Sehlinse
EP2077927B1 (de) Verfahren zum konturfräsen eines brillenglases
EP2234758B9 (de) Verfahren zur herstellung einer kontaktlinse mit besonderer verarbeitung von deren fassungsrippe
EP2268997B1 (de) Vorrichtung und verfahren zum erfassen der geometrie der glasseinfassung eines brillengestells
EP2425926B1 (de) Konturfräsverfahren einer Augenlinse
EP2247408B1 (de) Sichtgerät mit brillenglas mit teilweise beschnittener einsatzrippe und verfahren zur herstellung eines derartigen glases
EP2140223B1 (de) Verfahren für die herstellung eines brillenglases zur bündigen einpassung in ein brillengestell
EP2399709B1 (de) Rechnerisches Simulationsverfahren zur Gestaltung einer peripheren Fassungsrippe auf der Kante eines Brillenglases und Verfahren des Facettierens
EP2253427B1 (de) Vorrichtung und Verfahren zur Vorbereitung der Montage einer ophthalmischen Brillenlinse

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20100708

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HADDADI, AHMED

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

DAX Request for extension of the european patent (deleted)
GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602008008170

Country of ref document: DE

Effective date: 20110825

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20110706

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110706

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 515368

Country of ref document: AT

Kind code of ref document: T

Effective date: 20110706

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110706

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111106

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111006

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110706

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111107

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110706

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110706

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110706

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111007

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110706

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110706

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110706

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110706

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110706

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110706

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110706

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110706

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110706

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110706

26N No opposition filed

Effective date: 20120411

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110706

BERE Be: lapsed

Owner name: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQ

Effective date: 20111231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111231

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602008008170

Country of ref document: DE

Effective date: 20120411

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110706

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111017

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111224

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20111006

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110706

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121231

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110706

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121231

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 602008008170

Country of ref document: DE

Representative=s name: 24IP LAW GROUP SONNENBERG FORTMANN, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 602008008170

Country of ref document: DE

Owner name: ESSILOR INTERNATIONAL, FR

Free format text: FORMER OWNER: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE), CHARENTON LE PONT, FR

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

Owner name: ESSILOR INTERNATIONAL, FR

Effective date: 20180601

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230525

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 602008008170

Country of ref document: DE

Representative=s name: SONNENBERG HARRISON PARTNERSCHAFT MBB PATENT- , DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20231227

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20231227

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20231229

Year of fee payment: 16