EP2247407B1 - Verfahren zur herstellung einer kontaktlinse mit besonderer verarbeitung von deren fassungsrippe - Google Patents

Verfahren zur herstellung einer kontaktlinse mit besonderer verarbeitung von deren fassungsrippe Download PDF

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Publication number
EP2247407B1
EP2247407B1 EP09715200A EP09715200A EP2247407B1 EP 2247407 B1 EP2247407 B1 EP 2247407B1 EP 09715200 A EP09715200 A EP 09715200A EP 09715200 A EP09715200 A EP 09715200A EP 2247407 B1 EP2247407 B1 EP 2247407B1
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EP
European Patent Office
Prior art keywords
longitudinal profile
singular
ophthalmic lens
orientation
point
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EP09715200A
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English (en)
French (fr)
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EP2247407A1 (de
EP2247407B9 (de
Inventor
Ahmed Haddadi
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EssilorLuxottica SA
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Essilor International Compagnie Generale dOptique SA
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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
    • 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

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.
  • the concrete objective of 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 this lens best performs 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 proposes a process for preparing ophthalmic lenses making it possible to increase the probability that these lenses fit together correctly "at first glance” in their surroundings without being subjected to too much mechanical stress.
  • 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 coincides with the bottom edge of the bezel.
  • an A2 horizon line ( 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.
  • each surround 11 it is also possible to define with respect to each surround 11 an average plane which is orthogonal to the two branches of the spectacle frame 10 when they are in the deployed position and which is tangent to the bridge of this frame.
  • a line of verticality A3 ( figure 6 ) which is substantially vertical when the eyeglass frame 10 is carried by the carrier in orthostatic position and which passes through the plane of symmetry of the eyeglass frame.
  • the ophthalmic lens 20 has a forward optical face 21 convex and a concave rear optical face 22, and a peripheral edge 23 whose initial contour 20A ( 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; 27 curvilinear whose shape allows the nesting of the ophthalmic lens 20 in the entourage 11 corresponding spectacle frame 10.
  • This longitudinal profile 25; 27 corresponds to a line running along the edge 23 of the lens and which joins a defined point of each cross section of the nesting rib 24. Each of these points is here defined by a rule which is uniform for the whole cross-sections of the interlocking rib 24.
  • the longitudinal profile 25 may correspond to one of the strands of the interlocking rib 24, which extends over one and / or the other flanks of this interlocking rib and which is substantially parallel or coincident with the top of the nesting 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 20A, and which, on the other hand, has two sides parallel to the skyline A2 and two sides parallel to the line of verticality A3.
  • This boxing frame 26 has, at the intersection of its two diagonals, a geometric center C1 through which passes a central axis A1 of the lens ( figure 2 ), also called orientation axis or blocking axis.
  • the central axis A1 is substantially normal to the average plane of the surrounding 11 considered and passes through 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 therefore able 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 B1 rotation axis 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 feeler finger 8B of probe 8 at an altitude Z more or less important with respect to the plane of the front face of the turntable 6.
  • Each point palpated by the end of the feeler finger 8B of the probe 8 is then located in a corresponding cylindrical coordinate system.
  • the coordinates of each probed point of the bezel 13 are then noted ra i , tetaa i , za i .
  • 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 clipping apparatus further comprises clipping means here formed by a machining tool 32 rotatably mounted about an axis of rotation A4 which is here substantially parallel to the blocking axis A1, but which could also be inclined with respect to this axis .
  • the machining tool 32 and / or the shafts 31 are provided with two relative mobilities, including a radial mobility for modifying the spacing between the axis of rotation A4 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 grinding wheel 33 is here of revolution about the axis of rotation A4 and is provided with a beveling groove 34 capable of forming on the flank 23 of the lens 20 a nesting rib 24 (FIG. 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 semicircular 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 a width 0.3 mm below the depth and width of the bevelling groove 34 of the main wheel 33.
  • the machining tool 32 comprises a grinder 37 having a central portion 40 of cylindrical revolution about the axis of rotation A4, and, on either side of this central portion 40, two parts d end 38, 39 conical of revolution about the axis of rotation A4 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 A4. Knife means 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 opposite free edges are able to machine the blade. slice 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 a longitudinal profile 12 of the bezel 13 (called the acquired longitudinal profile), a deduction step, depending on the shape of this acquired longitudinal profile 12, of the shape of the a longitudinal profile 25 of the interlocking rib 24 (called the longitudinal profile deduced), a step of determination on this longitudinal profile deduced from singular portions Z1-Z56, and a step of trimming the ophthalmic lens 20 in a particular manner in the singular portions Z1-Z56.
  • 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 .
  • this orientation parameter comprises the coordinates ra 91 , teta 91 , z 91 and ra 271 , teta 271 , za 271 of two of the points of this acquired longitudinal profile 12 (the line passing through these two points is in fact parallel to the horizon line).
  • the electronic and / or computer device 9 can acquire the orientation parameter of this acquired longitudinal profile 12 with reference, not to the horizon line, but rather to the line of verticality A3.
  • the orientation parameter may comprise the coordinates ra 1 , teta 1 , za 1 and ra 181 , teta 181 , za 181 of two of the points of this acquired longitudinal profile 12 (the straight line passing through these two points is effect parallel to the line of verticality).
  • the database register comprises a plurality of records each associated with a referenced type of spectacle frames (that is to say, a shape or model of a spectacle frame). More specifically, each record includes an identifier that corresponds to the referenced type of eyeglass frames, and an array of values referencing the spatial coordinates of 360 characteristic points of the shape of the longitudinal profiles of the eyeglass frame bezels of the referenced type (the value of the parameter orientation is in particular deductible from these coordinates).
  • the operator searches the database for the record whose identifier corresponds to the spectacle frame. selected by the wearer (for example by means of the barcode of the frame). Then, the values referenced in this record are then 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.
  • the shape of the inner contour of each surround of the eyeglass frame for example by means of an image processing software.
  • This picture also shows the position of the horizon line defined as the line passing through the two pupils of the wearer.
  • the shape of the vertex ridge of the interlocking rib 24 is calculated so that this rib can to nest 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 device and / or computer hosted by the contour reading device 1 or those of the trimming apparatus 30, or by those of any other device capable of communicating with one and / or the other of these devices. two appliances 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 calculating means of the electronic and / or computer device hosted by the trimming apparatus 30 to derive a trimming radius setpoint and an axial trimming setpoint 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 .
  • This mathematical law therefore has two components rsj, tetas j in the mean plane which are uniform.
  • the constant k is computed in a conventional manner 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 frame and throat environment.
  • This constant k makes it possible in particular to take account of the fact that, once the lens is nested in the surrounding area, the apex of the interlocking rib (corresponding to the longitudinal profile deduced 25) is never in contact with the bottom of the bezel (corresponding to the acquired longitudinal profile 12) but is slightly offset with respect to 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 particular to modify the axial position of the engagement rib 24 on the edge 23 of the ophthalmic lens 20, so that the interlocking rib 24 extends along the front optical face of the lens or rather middle of his slice.
  • the positioning (also called centering) of this longitudinal profile deduced 25 on the ophthalmic lens 20 is conventionally performed as a function of an optical reference system of the ophthalmic lens 20 and the previously acquired orientation parameter. Such positioning is for example disclosed in the document EP1866694 .
  • the calculation means proceed to the detection of at least one singular portion Z1-Z12 ( figure 9 ) of the longitudinal profile deduced as a function of said orientation parameter.
  • This detection will subsequently machine the ophthalmic lens 20 so that its nesting rib 24 is ideally in contact with the bezel 13 outside the singular portions (see FIG. figure 8A ) and out of contact with this bezel 13 in these singular portions (see Figure 8B ).
  • the interlocking rib 24 will be machined in a conventional and uniform manner out of the singular portions of the longitudinal profile 25 deduced, so that the nesting rib 24 fits into the bezel 13, and it will be machined in a particular and non-uniform manner in the singular portions of the longitudinal profile deduced 25, so that ideally the interlocking rib 24 does not fit completely in the bezel 13.
  • sections of the interlocking rib 24 in which contact with the bezel 13 are expected to be called bearing sections, while the sections of the interlocking rib 24 in which it is expected that it will not There is no contact with the bezel 13 are called sections of freedom.
  • These sections of freedom are so named because if the lens is not properly cut and has a contour too large compared to that of the entourage 11 corresponding, this entourage is free to deform at these sections of freedom to marry the shape of the nesting rib. In this sense, the singular portions could also be called portions of freedom.
  • the determination of the positions of the singular portions Z1-Z13 of the derived longitudinal profile can be carried out in various ways.
  • the calculating means may define a polygon 26 inscribed or circumscribed to the first or second longitudinal profile 12, 25; 27 and oriented relative thereto around said central axis A1 according to said orientation parameter, then associating each point of this polygon 26 with a point of the longitudinal profile deduced 25 according to a given correspondence rule, and finally determining each singular portion Z1-Z12 as a portion comprising a singular point P2, P5, P8, P11 whose associated point on said polygon 26 is angular.
  • the polygon here corresponds to the boxing frame 26.
  • a point of the longitudinal profile deduced 25 is then defined as being associated with a point of the boxing frame 26 if these two points comprise the same angular position about the central axis A1, it is to say whether these two points are situated on the same line passing through the geometric center C1 of the boxing frame 26.
  • the calculation means then deduce the positions on the longitudinal profile deduced from four singular points P2, P5, P8, P11, whose associated points on the boxing frame 26 correspond to the four corners of this frame. These four singular points are thus located at the intersections of the longitudinal profile deduced with the diagonals of the boxing frame 26.
  • the calculation means here further define eight other singular points P1, P3, P4, P6, P7, P9, P11, P12 situated on either side of each of the four singular points P2.
  • the calculation means deduce therefrom the positions of twelve singular portions Z1-Z12 of the derived longitudinal profile 25 which correspond to the parts of this profile which are centered on the twelve singular points P1-P12 and which have lengths less than 10 millimeters, here equal at 5 millimeters.
  • the calculation means distribute these singular portions on this profile, starting from a starting point determined as a function of said orientation parameter, so that they are regularly spaced around the central axis A1.
  • the calculation means deduce therefrom the positions of the singular portions Z14-Z17 of the derived longitudinal profile 25 which correspond to the parts of this profile which are centered on the singular points P14-P17 and which have lengths equal to 10 millimeters.
  • the calculation means can distribute on the longitudinal profile deduced a plurality of singular points P18-P33 at positions which depend on the geometry of a third profile. 26, whose shape is a function of that of the longitudinal profile deduced 25.
  • the calculation means can distribute, from a singular starting point whose position is a function of the orientation parameter, a plurality of singular portions Z21-Z31 on the longitudinal profile deduced so that the zones corresponding third longitudinal profile 26 are regularly spaced curvilinear abscissa along the third longitudinal profile 26.
  • the calculation means select sixteen first singular points P118-P133 regularly spaced along the boxing frame 26 (which forms the third longitudinal profile), of the same length d1, from a singular point P118 starting at the vertical of the geometric center C1, under the horizon line A2 (index point j equal to 1).
  • This singular starting point P118 is therefore chosen according to the orientation parameter, so that the line passing through this singular point and the geometric center C1 is parallel to the line of verticality A3.
  • 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 profile deduced longitudinal 25 is defined as being associated with a point of the boxing frame 26 if these two points comprise the same angular position around the central axis A1, that is to say if these two points are located on the same straight line by the geometric center C1 of the boxing frame 26.
  • the calculation means then deduce the positions on the longitudinal profile deduced from sixteen second singular points P18-P33 associated with the first sixteen singular points P118-P133 of the boxing frame 26.
  • the computing means defines as singular portions Z18-Z33 of the longitudinal profile deduced 25 the sixteen parts of this profile which are centered around these second singular points P18-P33 and which have predetermined lengths, for example equal to 6 millimeters.
  • the calculating means can position a predetermined number of singularly spaced regular portions along the curvilinear abscissa along the derived longitudinal profile 25 from a starting point. determined according to said orientation parameter.
  • the calculation means then deduce the positions of the thirty singular portions Z34-Z38 of the derived longitudinal profile 25 which correspond to the parts of this profile which are centered on the thirty singular points P34-P38 and which have lengths for example equal to one-sixtieth of the total length of the longitudinal profile deduced 25.
  • the calculation means define a polygon 28 inscribed in the longitudinal profile deduced 25 or in the acquired longitudinal profile 27 and oriented relative thereto about said axis of orientation A1 in according to said orientation parameter, then they determine each singular portion Z39-Z47 as a portion having a point belonging to said polygon 28.
  • the calculation means select from among the 360 points of the longitudinal profile deduced 25 a starting point P39, which is here located vertically from the geometric center C1, below the horizon line (the index point j equal to 1). They then calculate from this singular starting point P39 the position of the vertices of a polygon 28 which is inscribed in the longitudinal profile deduced 25, whose side number is at least eight (here equal to nine) and whose the sides have identical lengths. They then select as singular points P39-P47 of the longitudinal profile deduced 25 points of this profile which are located at the vertices of this polygon.
  • the calculation means then deduce the positions of the singular portions Z39-Z47 of the derived longitudinal profile 25 which correspond to the parts of this profile which are centered on the singular points P39-P47 and which have lengths for example equal to 5 millimeters.
  • the calculation means define a polygon 26 circumscribing the longitudinal profile deduced 25 or the acquired longitudinal profile 27 and oriented with respect thereto around said axis of A1 orientation according to said orientation parameter, then they determine each singular portion Z48-Z51 as portion having a point belonging to said polygon 26.
  • the calculation means determine on the longitudinal profile deduced 25 the positions of the four singular points P48-P51 which also belong to the boxing frame 26.
  • the calculation means then deduce the positions of four singular portions Z48-Z51 of the derived longitudinal profile 25 which correspond to the parts of this profile which are centered on the singular points P48-P51 and which have lengths for example equal to 5 millimeters.
  • the calculating means determine the position of an inclined frame 29 which is circumscribed to the longitudinal profile deduced 25 and whose four sides are oriented at 45 degrees to to the skyline. Then, they determine on the longitudinal profile deduced 25 the positions of the four singular points P53-P56 of this profile which also belong to the inclined frame 29.
  • the calculation means then deduce the positions of the singular portions Z53-Z56 of the derived longitudinal profile 25 which correspond to the parts of this profile which are centered on the singular points P53-P56 and which have lengths for example equal to 5 millimeters.
  • the calculating means acquires the coordinates of the intersection point P102 of two tangents T1, T2 to the longitudinal profile deduced at two points P100, P101 positioned thereon. profile according to said orientation parameter, then they determine said singular portion Z52 as a portion having the point of the second longitudinal profile 25 which is closest to said intersection point P102 or which has an orientation about said identical central axis A1 at that point of intersection P102.
  • the calculation means firstly select the two points P100, P101 of the longitudinal profile 25 located in the temporal portion of this profile, above the horizon line and oriented with respect thereto around of the central axis A1 of 30 and 60 degrees (index points j equal to 121 and 151). Then, in a second step, the calculation means determine the positions of the tangents T1, T2 to the longitudinal profile deduced at these two points P100, P101 and they deduce the angular position around the central axis A1 of the intersection point. P102 of these two tangents T1, T2. Finally, in a third step, the calculation means define as singular point P52 of the longitudinal profile deduced 25 the point having a position angular identical to that of the point of intersection P102.
  • the calculation means then deduce the position of the singular portion Z52 of the derived longitudinal profile 25 which corresponds to the portion of this profile which is centered on the singular point P52 and which has a length for example equal to 10 millimeters.
  • the calculation means read the record of the database register which contains here, in addition to the coordinates of points representative of the shape of the longitudinal profile. acquired 27, the coordinates of points representative of the shape of the longitudinal profile deduced 25 as well as the positions of each singular portion on this longitudinal profile deduced 25.
  • the trimming apparatus 30 trims the ophthalmic lens 20. This step will be described here with reference to the 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 singular portions Z1-Z12.
  • the calculation means correct the shape of the longitudinal profile deduced in these singular portions Z1-Z12.
  • the calculation means reduce the values of the radial coordinates rs j points of the initial deduced longitudinal profile located in the singular portions Z1-Z12. This reduction is made in such a way that the new longitudinal profile deduced 27 is continuous, that it has neither angular points nor cusp points, and that it deviates in each singular portion Z1-Z12 by more than 0.05 millimeter and less than 0.3 millimeter of the initial longitudinal profile deducted.
  • the reduction is here made such that the maximum deviation between the new longitudinal profile deduced 27 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 27.
  • the nesting rib 24 is then profiled, that is to say that it has a uniform section over its entire length.
  • the engagement rib 24 of the lens has, on the one hand , sections ( figure 8A ), located outside the singular portions, at which it is in contact with the bezel 13, alternated with, on the other hand, sections ( Figure 8B ), located in singular portions, at which it is out of contact with the bezel.
  • the register may comprise a plurality of records each of which is associated with a type or model of glasses frames referenced and contains the shape of a new longitudinal profile deduced 27 common to the frames of this type or this model.
  • the storage in the register of the shape of the new longitudinal profile deduced 27 will then be performed by searching in this register a record corresponding to the mount concerned and by writing in this record the shape of the new longitudinal profile deduced 27.
  • the calculating means can acquire in the register the shape of this new longitudinal profile deduced 27, so as to directly machine the lens according to this profile.
  • 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 singular portions Z1-Z12.
  • 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 Z1-Z12.
  • 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 Z1-Z12.
  • 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 end of a first singular portion. 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 interlocking rib 24 in this singular portion. This control is carried out so that the height and the width of the engagement rib 24 are reduced by at most 0.3 millimeters and that the engagement rib 24 does not have any discontinuity, in particular at the ends of each singular portion Z1-Z12.
  • 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 Z1-Z12 so as to shift progressively axially (according to the invention).
  • central axis A1) relative to the position they had during the first pass of the main grinding wheel 33.
  • 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.
  • 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 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 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.
  • 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 interlocking rib 24 on each singular portion but also to machine the feet of the interlocking rib 24 (by determining the shape of a new longitudinal profile from the longitudinal profile deduced, according to a method of the type of the one mentioned above).
  • the The register may have a plurality of records, each of which is associated with a referenced type or model of eyeglass frames and contains the shape of an inferred longitudinal profile common to frames of this type or model.
  • the memorization of the shape of the longitudinal profile deduced 25 will then be achieved by searching in this register a record corresponding to the mount concerned and by writing in this record the shape of the longitudinal profile deduced 25.
  • 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 the trim to singular points.
  • 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 25; 27 and such 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 eyeglass 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 The level of the singular portions allow the two lenses to be mountable in their surroundings.
  • This invention will find particularly advantageous application when implemented by customers (opticians) called "outsourcers" subcontracting the manufacture and trimming of lenses.
  • a client terminal installed on the customer's side 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 manufacturer terminal, each record of which is associated with a type of spectacle frames 10 and contains, firstly, a reference of this type of frames. , secondly, the shape of an acquired longitudinal profile 12 common to the surrounding 11 of this type of frames, and, thirdly, an orientation parameter associated with this profile.
  • the manufacturer searches in this database register for the shape and the orientation parameter of the acquired longitudinal profile 12 of the spectacle frame selected by the wearer (using the reference determined at the first stage). He then deduces from the shape of this acquired longitudinal profile 12 the shape of the longitudinal profile deduced by a method of the type of that previously stated.
  • the manufacturer determines on this longitudinal profile deduced 25, according to said orientation parameter, at least one singular portion and then it diverts the lens specifically in each singular portion.
  • the lens will be easily mountable "first time” in the frame selected by the wearer. As a result, the lens not be returned to the manufacturer for resumption, which is always long and expensive.
  • 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.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Eyeglasses (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Claims (19)

  1. 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 eines Richtungsparameters dieses ersten Längsprofils (12) in Bezug auf eine Horizontlinie (A2) oder in Bezug auf eine Senkrechtelinie (A3) dieser Einfassung (11) um eine Richtungsachse (A1), die im Wesentlichen zu einer mittleren Ebene der Einfassung (11) senkrecht ist,
    - einen Zuschneideschritt des Brillenglases (20) mit Bildung an seiner Kante (23) einer im Allgemeinen profilierten Einsetzrippe (24), die einen gewünschten Querschnitt hat und sich gemäß einem zweiten Längsprofil (25) erstreckt, welches vom ersten Längsprofil (12) abgeleitet wird und dessen Richtung in Bezug zum Brillenglas (20) um die Richtungsachse (A1) vom Richtungsparameter abgeleitet wird,
    dadurch gekennzeichnet, dass es einen Schritt zum Ermitteln von mindestens einem singulären Teilabschnitt (Z1-Z56) des zweiten Längsprofils (25) in Abhängigkeit des Richtungsparameters umfasst,
    und dadurch, dass im Laufe des Zuschneideschrittes die Einsetzrippe (24) gebildet wird, um im singulären Teilabschnitt (Z1-Z56) einen in Breite und/oder Höhe verengten Bereich aufzuweisen.
  2. Verfahren nach vorausgehendem Anspruch, bei dem die Breite und/oder Höhe der Einsetzrippe (24) um mindestens 0,05 mm in mindestens einem Bereich jedes singulären Teilabschnitts (Z1-Z56) verengt ist.
  3. Verfahren nach einem der vorausgehenden Ansprüche, bei dem die Breite und Höhe der Einsetzrippe (24) um höchstens 0,3 mm in jedem singulären Teilabschnitt (Z1-Z56) verengt sind.
  4. 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 eines Richtungsparameters dieses ersten Längsprofils (12) in Bezug auf eine Horizontlinie (A2) oder in Bezug auf die Senkrechtelinie (A3) dieser Einfassung (11) um eine Richtungsachse (A1), die im Wesentlichen zu einer mittleren Ebene der Einfassung (11) senkrecht ist,
    - einen Zuschneideschritt des Brillenglases (20) mit Bildung an seiner Kante (23) einer im Allgemeinen profilierten Einsetzrippe (24), die einen gewünschten Teilabschnitt hat und sich gemäß einem zweiten Längsprofil (27) erstreckt, welches vom ersten Längsprofil (12) abgeleitet wird und dessen Richtung in Bezug zum Brillenglas (20) um die Richtungsachse (A1) vom Richtungsparameter abgeleitet wird,
    dadurch gekennzeichnet, dass es einen Schritt zum Ermitteln von mindestens einem singulären Teilabschnitt (Z1-Z56) des zweiten Längsprofils (27) in Abhängigkeit des Richtungsparameters umfasst,
    und dadurch, dass im Laufe des Zuschneideschrittes die Einsetzrippe (24) gebildet wird, damit das zweite Längsprofil (27) durch ein mathematisches Gesetz, das im singulären Teilabschnitt (Z1-Z56) nicht das gleiche ist als für den Rest des zweiten Längsprofils (27), vom ersten Längsprofil (12) abzuleiten ist, sodass der durchschnittliche Krümmungsradius dieses singulären Teilabschnitts (Z1-Z56) des zweiten Längsprofils (27) in Bezug zum durchschnittlichen Krümmungsradius erhöht ist, den dieser singuläre Teilabschnitt (Z1-Z56) gehabt hätte, wenn für diesen singulären Teilabschnitt (Z1-Z56) das gleiche mathematische Gesetz gegolten hätte als für den Rest des zweiten Längsprofils (27).
  5. Verfahren nach dem vorausgehenden Anspruch, bei dem der singuläre Teilabschnitt (Z1-Z56) des zweiten Längsprofils (27) in Bezug zur Form, die dieser singuläre Teilabschnitt (Z1-Z56) gehabt hätte, wenn das mathematische Gesetz für diesen singulären Teilabschnitt (Z1-Z56) dasselbe gewesen wäre als für den Rest des zweiten Längsprofils (27), in mindestens einem Punkt eine Abweichung von über 0,05 mm aufweist.
  6. Verfahren nach einem der beiden vorausgehenden Ansprüche, bei dem der singuläre Teilabschnitt (Z1-Z56) des zweiten Längsprofils (27) in Bezug zur Form, die dieser singuläre Teilabschnitt (Z1-Z56) gehabt hätte, wenn das mathematische Gesetz für diesen singulären Teilabschnitt (Z1-Z56) dasselbe gewesen wäre als für den Rest des zweiten Längsprofils (27), in allen Punkten eine Abweichung von unter 0,3 mm aufweist.
  7. Verfahren nach einem der drei vorausgehenden Ansprüche, bei dem die Einsetzrippe (24) im Laufe des Zuschneideschrittes gebildet wird, um entlang dem zweiten Längsprofil (27) einen Abschnitt mit gleichmäßiger geometrischer Form aufzuweisen.
  8. Verfahren nach einem der vorausgehenden Ansprüche, bei dem die Einsetzrippe (24) im Laufe des Zuschneideschrittes gebildet wird, um ein durchgehendes Profil ohne Ecken oder Rückkehrpunkt aufzuweisen.
  9. Verfahren nach einem der vorausgehenden Ansprüche, bei dem jeder singuläre Teilabschnitt (Z1-Z56) eine Länge von unter 10 mm aufweist.
  10. Verfahren nach einem der Ansprüche 1 bis 9, bei dem man zum Ermitteln jedes singulären Teilabschnitts (Z1-Z56) ein in das erste oder zweite Längsprofil (12, 25; 27) eintragend oder dadurch beschränktes Polygon (26; 28) definiert, das in Bezug zum Profil um die Richtungsachse (A1) in Abhängigkeit des Richtungsparameters orientiert ist, wobei jeder Punkt gemäß einer gegebenen Entsprechungsregel einem Punkt des zweiten Längsprofils (25; 27) zugeordnet ist, anschließend ermittelt man jeden singulären Teilabschnitt (Z1-Z56) als Bereich mit einem Punkt, dessen zugeordneter Punkt auf dem Polygon (26; 28) ein Eckpunkt ist.
  11. Verfahren nach einem der Ansprüche 1 bis 9, bei dem man zum Ermitteln jedes singulären Teilabschnitts (Z1-Z56) ein durch das erste oder zweite Längsprofil (12, 25; 27) beschränktes Polygon (26; 28; 29) definiert, das in Bezug zum Profil um die Richtungsachse (A1) in Abhängigkeit des Richtungsparameters orientiert ist, anschließend ermittelt man jeden singulären Teilabschnitt (Z1-Z56) als Teilabschnitt mit einem Punkt, der dem Polygon (26; 28; 29) angehört.
  12. Verfahren nach einem der Ansprüche 1 bis 9, bei dem man beim Ermittlungsschritt eine vorbestimmte Anzahl an in Bogenlänge entlang dem zweiten Längsprofil (25; 27) regelmäßig beabstandeten singulären Teilabschnitten (Z1-Z56) ausgehend von einem in Abhängigkeit des Richtungsparameters bestimmten Ausgangspunkt positioniert.
  13. Verfahren nach einem der Ansprüche 1 bis 9, bei dem man beim Ermittlungsschritt eine vorbestimmte Anzahl an regelmäßig um eine Achse der Linse innerhalb des zweiten Längsprofils (25; 27) beabstandeten singulären Teilabschnitten (Z1-Z56) ausgehend von einem in Abhängigkeit des Richtungsparameters bestimmten Ausgangspunkt positioniert.
  14. Verfahren nach einem der Ansprüche 1 bis 9, bei dem man beim Ermittlungsschritt den Schnittpunkt (P102) von zwei Tangenten (T1, T2) zum zweiten Längsprofil (25; 27) in zwei Punkten (P100, P101) erfasst, die in Abhängigkeit des Richtungsparameters auf dem zweiten Längsprofil (25; 27) positioniert sind, anschließend ermittelt man den singulären Teilabschnitt (Z1-Z56) als Teilabschnitt, der den Punkt des zweiten Längsprofils (25; 27) enthält, der dem Schnittpunkt (P102) am nächsten ist oder der die gleiche Richtung um die Richtungsachse (A1) aufweist wie der Schnittpunkt (P102).
  15. Verfahren nach einem der Ansprüche 1 bis 9, bei dem man nach dem Ermittlungsschritt in einem Datenbankregister, in dem jeder Datensatz einem referenzierten Typ von Brillengestell (10) zugeordnet ist und die Form des zweiten Längsprofils (25; 27) enthält, einen Datensatz sucht, der dem jeweiligen Brillengestell entspricht und man in diesen Datensatz die Positionen jedes singulären Teilabschnitts (Z1-Z56) auf dem zweiten Längsprofil (25; 27) schreibt.
  16. Verfahren nach einem der vorausgehenden Ansprüche, bei dem man im Laufe des Erfassungsschrittes einen Datensatz eines Datenbankregisters abliest, in dem jeder Datensatz einem referenzierten Typ von Brillengestell (10) zugeordnet ist und einerseits die Form des ersten erfassten Längsprofils (12) des Frontrings (13) entsprechend dem referenzierten Typ von Brillengestell enthält, und andererseits den Richtungsparameter.
  17. Verfahren nach einem der vorausgehenden Ansprüche, das einen Zuschneideschritt eines zweiten Brillenglases in Hinblick auf seine Montage in eine zweite Einfassung des Brillengestells (10) umfasst, indem an seiner Kante eine im Allgemeinen profilierte Einsetzrippe gebildet wird, die sich gemäß einem vorgegebenen und zum zweiten Längsprofil (25; 27) symmetrischen Längsprofil erstreckt und dessen Teilabschnitt durch Symmetrie eine gleiche Breite und/oder Höhe wie die Breite und/oder Höhe des entsprechenden Teilabschnitts der Einsetzrippe (24) des ersten Brillenglases (20) aufweist.
  18. Verfahren nach einem der vorausgehenden Ansprüche, 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 (10) 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 (11) des Brillengestells (10), und des Richtungsparameters, und
    - einen Sendeschritt durch den Kunden-Terminal und einen Empfangsschritt durch den Hersteller-Terminal der Bestelldaten, wobei diese Daten das erste Längsprofil (12) und den Richtungsparameter enthalten.
  19. Verfahren nach einem der Ansprüche 1 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 (10) 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, bei dem jeder Datensatz einem bestimmten Typ von Brillengestell (10) zugeordnet ist und eine Referenz dieses Brillengestells, das erste Längsprofil (12) der Einfassung (11) dieses Brillengestells und den Richtungsparameter eines Datensatzes enthält, der der jeweiligen Referenz des Brillengestells zugeordnet ist.
EP09715200A 2008-01-28 2009-01-09 Verfahren zur herstellung einer kontaktlinse mit besonderer verarbeitung von deren fassungsrippe Active EP2247407B9 (de)

Applications Claiming Priority (2)

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FR0800450A FR2926896B1 (fr) 2008-01-28 2008-01-28 Procede de preparation d'une lentille ophtlmique avec usinage specifique de sa nervure d'emboitement
PCT/FR2009/000025 WO2009106765A1 (fr) 2008-01-28 2009-01-09 Procède de préparation d'une lentille ophtalmique avec un usinage spécifique de sa nervure d'emboîtement

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CN105764652A (zh) * 2013-11-26 2016-07-13 埃西勒国际通用光学公司 用于斜切眼科镜片的方法

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FR2961732B1 (fr) 2010-06-24 2012-07-27 Essilor Int Procede de calcul predictif d'une geometrie simulee d'une nervure d'engagement a menager sur le chant d'une lentille ophtalmique d'une paire de lunettes et methode de biseautage
FR2964336B1 (fr) * 2010-09-07 2012-09-14 Essilor Int Procede de detourage d'une lentille ophtalmique
JP6016691B2 (ja) * 2013-03-28 2016-10-26 Hoya株式会社 形状分割方法、形状分割プログラムおよびデータ処理装置
US20160059373A1 (en) * 2013-03-28 2016-03-03 Hoya Corporation Shape division method, shape division program and data processing device, and lens data processing method, lens edging method and lens data processing program
JP6009390B2 (ja) * 2013-03-28 2016-10-19 Hoya株式会社 レンズデータ処理方法、レンズ加工方法、レンズデータ処理プログラムおよびデータ処理装置
JP6063325B2 (ja) * 2013-03-28 2017-01-18 Hoya株式会社 レンズ加工方法、レンズ加工プログラムおよび加工制御装置
BR112017001410A2 (pt) * 2014-07-25 2017-11-21 Vision Ease Lp lente fina estabilizada

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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
WO1999040526A1 (fr) * 1998-02-03 1999-08-12 Tsuyoshi Saigo Systeme de simulation de port de lunettes
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

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CN105764652A (zh) * 2013-11-26 2016-07-13 埃西勒国际通用光学公司 用于斜切眼科镜片的方法

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EP2247407A1 (de) 2010-11-10
US8556419B2 (en) 2013-10-15
FR2926896A1 (fr) 2009-07-31
FR2926896B1 (fr) 2010-03-19
ATE515367T1 (de) 2011-07-15
EP2247407B9 (de) 2012-02-15
WO2009106765A1 (fr) 2009-09-03

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