EP1249307B1 - Torisches Werkzeug zum Polieren einer optischen Fläche einer atorischen Linse und Polierverfahren mit einem solchen Werkzeug - Google Patents

Torisches Werkzeug zum Polieren einer optischen Fläche einer atorischen Linse und Polierverfahren mit einem solchen Werkzeug Download PDF

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Publication number
EP1249307B1
EP1249307B1 EP02290853A EP02290853A EP1249307B1 EP 1249307 B1 EP1249307 B1 EP 1249307B1 EP 02290853 A EP02290853 A EP 02290853A EP 02290853 A EP02290853 A EP 02290853A EP 1249307 B1 EP1249307 B1 EP 1249307B1
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Prior art keywords
polishing
tool
lens
value
buffer
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EP02290853A
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English (en)
French (fr)
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EP1249307A2 (de
EP1249307A3 (de
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Joel Bernard
Christophe Jeannin
Joel Huguet
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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
    • B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • B24B13/01—Specific tools, e.g. bowl-like; Production, dressing or fastening of these tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/16—Bushings; Mountings

Definitions

  • the invention relates to a tool for polishing an optical surface according to the pre-balloon of claim 1, and to a method of polishing according to the preamble of claim 9 or A tool of this type is described in US 3,583,111.
  • a lens for example an ophthalmic lens, comprises two opposite optical surfaces, connected by a slice generally inscribed in a cylinder with a circular base.
  • a torus T of which only a portion is represented, is obtained by revolution of a circle of radius R2, about an axis A1 located in the plane of said circle.
  • the point of the circle furthest from the axis A1 describes a circle of radius R1.
  • the radii R1 and R2 are respectively called large radius and small radius of torus T.
  • R1 is strictly greater than R2.
  • the circles of radii R1 and R2 are respectively located in a plane P1 perpendicular to the axis A1, and in a plane P2 containing the axis A1, the plans P1 and P2 being intersecting in a straight line A2.
  • a cylinder of axis A2, and radius R3 (here strictly less than the radius R2), cuts the torus T into a curve C delimiting a surface S toric, which has two plane symmetries: one with respect to plane P1, the other relative to in the P2 plan.
  • intersection of the toric surface S with the plane P1 is an arc of a circle of radius R1, called large meridian M1 of the toric surface S, while the intersection of the toric surface S with the plane P2 is a circular arc of radius R2, called small meridian M2 of the toric surface S.
  • the great meridian M1 has a curvature C1 whose value is equal unlike the large radius R1, while the small meridian M2 presents a curvature C2 whose value is equal to the inverse of the small radius R2.
  • meridians M1 and M2 are sufficient to completely define the shape of the surface toric S, which is concave in the direction of the axis A1, and convex in a opposite direction.
  • a given surface is atoric if exists a toric surface whose deviation at any point with respect to said surface atoric is inferior, in absolute value, to a chosen value.
  • this value equal to 0.2 mm over a diameter of 80 mm, but may be slightly different without departing from the scope of the invention.
  • a polishing step After the roughing of such an atoric surface, obtained by machining, a polishing step, possibly preceded by a step of smoothing, aims at reduce the roughness of the surface already roughed.
  • Polishing is a delicate step because it involves reducing the roughness of the surface without deforming the latter.
  • Polishing of an optical surface with symmetry of revolution can be performed by means of a tool comprising a polishing surface having a shape complementary to that of the surface optical, the tool and / or lens being rotated about the axis of symmetry of the optical surface, so that the polishing surface rubs against the optical surface.
  • JP-09 396 666 where the tool is designed for a lens aspherical convexity, the curvature of a spherical surface for the substrate of base, the elastic member and the surface member, is identical to a surface spherical including the working surface of a lens having an aspherical surface, is an approximation.
  • the lens is rotated, and, simultaneously, the tool is driven so as to be pressed against the surface of job.
  • the tool will tend to deform the surface of the lens to give it at least locally its own shape, spherical, and thus proves difficult to apply with toric surfaces or atoric surfaces.
  • the object of the invention is to propose a polishing tool, as well as a method of polishing using this tool, which polish an atoric surface to the quickly and evenly, while respecting the constraints of precision mentioned above.
  • machining of lenses made of mineral glass requires removal of material more important than the machining of lenses made of glass organic and causes the appearance of subsurface micro-cracks that to disappear, require a longer polishing time, which leads to deformations and inaccuracies in the final shape of the surface of the lens.
  • the invention will therefore apply preferably to lenses made in organic glass, which does not have the aforementioned disadvantages of mineral glass.
  • the tool and the surface to be polished are moved relative to each other to the other following two movements in two perpendicular directions which each follow one of the meridians of the polishing surface.
  • the tool that has just been described is applied to the polishing of a surface atoric optics of a lens such as an ophthalmic lens, made of preferably organic glass according to claim 9.
  • the lens having a circular slice having a given diameter preferably has a circular section whose diameter is greater than the diameter of the slice of the lens.
  • the second correction ⁇ C2 is for its part for example between 0 and 0.8 m -1 , preferably between 0.1 m -1 and 0.64 m -1 , for example equal to 0.37 m -1 .
  • step a) the determination of the best torus is made from preferably by means of the so-called least squares mathematical method.
  • step a) the determination of the best torus is made for only part of the atoric surface of the lens, this part having a circular circumference, coaxial with the slice of The lens.
  • the implementation of the invention makes it possible to polish rapidly and effectively an atoric optical surface without deforming it. Buffer, compressible, ensures permanent contact between the polisher and the surface atoric lens.
  • FIG. 2 shows an ophthalmic lens 1 made of preferably organic glass and comprising two optical surfaces: a convex spherical surface 2 having an axis A of revolution, as well as a Concave surface 3, atoric, opposite convex surface 2, surfaces 2 and 3 being connected by a slice 4 inscribed in a cylinder of axis A and of diameter ⁇ 2 called diameter of the lens 1.
  • the diameter ⁇ 2 is between 60 mm and 80 mm.
  • the axis A of the lens meets the optical surface 3 at a point SL called top of the optical surface 3.
  • the optical surface 3, rough machining, has a roughness that is wish to decrease in order to give it an acceptable surface however, distort it.
  • the tool 5 is delimited radially by a cylindrical surface 15 of axis A 'and of diameter ⁇ O, called diameter of the tool 5.
  • the polisher 10 which has a thickness e P also uniform, comprises meanwhile a first surface 13 adhering to the second surface 12 of the pad 9, and a second surface 14 opposite the first 13, this polishing surface 14, called polishing surface, being able to polish the optical surface 3 by friction against it.
  • the buffer 9, whose thickness e T is for example between 4 mm and 6 mm, is made of a material whose deformation rate under a pressure of 0.04 MPa is greater than 5% .
  • the pad 9 may be made of an elastomeric material or preferably, polyurethane foam.
  • the polisher 10 whose thickness e P is for example between 0.5 mm and 1.1 mm, is in turn made of fabric, felt or, according to a preferred embodiment, polyurethane foam.
  • the polisher 10 is deformable so as to be able to conform to the shape of the optical surface 3 of the lens 1 thanks to the compressibility of the pad 9.
  • the buffer 9 and the polisher 10 are, for example, successively glued or overmolded on the support surface 8, so that the second surfaces 12 and 14 of the buffer 9 and the polisher 10 follow the shape of the support surface 8, to the thickness of the buffer 9 and the polisher 10 near.
  • the polishing surface 14 has two planar symmetries: one with respect to a plane P1 containing the axis A ', and the other by relative to a plane P2 also containing the axis A 'and perpendicular to the plane P1.
  • the polishing surface 14, toric has two main meridians M1 and M2, respectively defined by the intersection of the polishing surface 14 with the plane of symmetry P1, and with the plane of symmetry P2.
  • the main meridians M1 and M2, which are arcs of circle, are secants on the axis A 'at a point SO called the top of the polishing surface 14.
  • the choice of the tool 5, that is to say the choice of the polishing surface 14, is function of the shape of the optical surface 3.
  • the thicknesses e T and e P of the buffer 9 and the polisher 10 are uniform, it is understood that it is necessary, for the manufacture of the tool 5, to provide a support surface 8 of toric shape which corresponds to the thicknesses e T and e p P , on the polishing surface 14.
  • the support surface 8 also has two plane symmetries, one with respect to the plane P1, and the other with respect to the plane P2.
  • the support surface 8 has two main meridians MS1 and MS2, concentric respectively to meridians M1 and M2 of the surface of polishing, and defined by the intersection of the support surface 8 with, respectively, the plane P1 and the plane P2.
  • the meridian MS1 which is the great meridian of the support surface 8, has a curvature CS1
  • the meridian MS2, which is the small meridian of the support surface 8 has meanwhile a curvature CS2.
  • the best torus is an approximate toric surface of the optical surface 3, its determination being carried out for example by means of the method least-squares mathematical method, from a selection of values of geometric characteristics of the optical surface 3, chosen or measured on only part of the lens 1, this part having a circumference circular diameter ⁇ 1, coaxial with the slice 4 of the lens 1.
  • the diameter ⁇ 1, called the design diameter is chosen equal to or substantially equal to 60 mm.
  • the best torus has two plane symmetries: one with respect to one plane PL1, the other with respect to a plane PL2 perpendicular to plane PL1.
  • the best torus has two main meridians M * 1 and M * 2, defined by the intersection of the best torus with, respectively, the first and the second plane of symmetry PL1, PL2.
  • the main meridian M * 1, which presents a curvature C * 1, is the great meridian of the best torus
  • the meridian M * 2, which has a curvature C * 2 is the small meridian of the best torus, of so that the value of the curvature C * 1 is strictly less than the value of the curvature C * 2.
  • the reference torus is, for its part, the toric surface corresponding to the ophthalmic prescription for which the optical surface 3 is made.
  • the reference torus is a toric surface which, if it was substituted for the atoric surface 3 of the lens 1, providing a point chosen from this one the same prescription value as the atoric surface 3.
  • Said selected point is generally the point of preference of the prism, commonly referred to as PRP, well known to those skilled in the art.
  • the reference torus comprises two circular main meridians having respective curvatures C'1, C'2.
  • the value of the parameter a, expressed in m -1 is between 0 and 4, and preferably between 0.2 and 3.4.
  • the value of the parameter b, without unit, is between 0.01 and 0.3, and preferably between 0.05 and 0.25.
  • parameter c also without unit, is between -2 and -0.01, and preferably between -1.5 and -0.1.
  • the value of the parameter d, expressed in m -2 , with ⁇ 2 expressed in m, is between -100 and 0, and preferably between -60 and -2.
  • the value of the second correction ⁇ C2, also expressed in m -1 is for example between 0 and 0.8, and preferably between 0.1 and 0.64. According to one embodiment, the value of the second correction ⁇ C2 is equal to or substantially equal to 0.37 m -1 .
  • the diameter ⁇ 0 of the tool 5 is chosen greater than the diameter ⁇ 2 of the lens 1.
  • the value of the diameter ⁇ O of the tool 5 is for example chosen equal or substantially equal to 110 mm.
  • the tool 5 is used to polish the atoric optical surface 3.
  • the tool 5 Prior to its use, the tool 5 is arranged opposite and at distance from the optical surface 3 so that the axis A ', the plane of symmetry P1 and the plane of symmetry P2 of the tool 5 coincide respectively with the axis A of the lens 1, the plane of symmetry PL1, and the plane of symmetry PL2.
  • the tool 5 and the lens 1 are then brought closer to each other until that the polishing surface 14 comes into contact with the optical surface 3 of the lens 1, without the pad 9 being compressed.
  • the polishing surface 14 is in point contact with the optical surface 3, with their respective summits SO and SL in coincidence.
  • the tool 5 and the lens 1 are then moved relative to each other according to two distinct alternating rotary motions, which can be combined to obtain a scrambling effect ensuring a good polishing quality.
  • the first movement is a plane rotation in the plane P1 of the big M1 meridian of the polishing surface 14, rotation whose center is coincident with the center of curvature of this meridian M1.
  • the second movement is a plane rotation in the plane P2 of the small M2 meridian of the polishing surface 14, whose center of rotation coincides with the center of curvature of this meridian M2.
  • the maximum amplitude of this reciprocating motion is such that the edge 16 of the polisher 10 comes locally coincide with the slice 4 of the lens 1, the tool 5 being then, by compared to lens 1, in an extreme position represented by the dotted lines of Figure 10.
  • the atoric optical surface 3 is never discovered during polishing.
  • the choice of the diameter ⁇ O of the tool 5, greater than the diameter ⁇ 2 of the lens 1, allows a fast polishing.
  • Such a determination unit 18 can be integrated into a unit of numerical control 29 of a polishing installation 30 adapted to the polishing of ophthalmic lenses and suitable for the implementation of the method described above. Like the determining unit 18, the control unit 29 and the polishing installation 30 are not claimed as such in this patent, but their description is useful for the understanding of the invention.
  • This installation 30 further comprises a lens support 31 where the latter is momentarily restrained during polishing.
  • the installation 30 also comprises a tool holder 32 on which is mounted the tool 5, and means 33 to create a relative movement of the lens holder 31 and the tool holder 32, as described above, these means 33 being connected to the digital control unit 29.
  • the lens support 31 is fixed, only the tool holder 32 then being set in motion.
  • the support surface 8 is chosen spherical, while the thicknesses e T and e P of the buffer 9 and the polisher 10 are chosen non-uniform in order to obtain, during their superposition on the support surface. 8, a toric polishing surface 14 whose curvature values C1, C2 are in accordance with the calculated values.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Claims (28)

  1. Werkzeug zum Polieren einer optischen Fläche (3) einer Linse (1), wobei das Werkzeug (5) umfasst:
    eine steife Stützeinrichtung (6), die eine Stützfläche (8) umfasst;
    eine erste Schicht (9), Puffer oder Pufferschicht genannt, dargestellt mittels eines elastischen Materials, zumindest teilweise die Stützfläche (8) bedeckend, wobei der Puffer oder die Pufferschicht (9) umfasst:
    eine erste Fläche (11), die an der Stützfläche (8) anhaftet; und
    eine zweite Fläche (12), die der ersten Fläche (11) gegenübersteht;
    eine zweite Schicht (10), Polierer oder Polierschicht genannt, zumindest teilweise den Puffer oder die Pufferschicht (9) bedeckend, wobei der Polierer oder die Polierschicht (10) umfasst:
    eine erste Fläche (13), anhaftend an der zweiten Fläche (12) des Puffers (9); und
    eine zweite Fläche (14), Polierfläche genannt, der ersten Fläche (13) gegenüberstehend und geeignet zum Polieren der optischen Fläche (3) der Linse (1) mittels diesbezüglichem Reibens;
    wobei das Werkzeug (5) dadurch gekennzeichnet ist, dass die Polierfläche (14) torusförmig ist, wobei die Fläche (14) zwei kreisförmige Hauptmeridiane M1, M2 umfasst, jeweilige Krümmungen C1, C2 derart aufweisend, dass der Wert der Krümmung C1 streng kleiner ist als der Wert der Krümmung C2, und dass, um in der Lage zu sein, eine optische Fläche (3), die atorisch ist polieren zu können, der Puffer oder die Pufferschicht (9) elastisch komprimierbar ausgebildet ist, während der Polierer oder die Polierschicht 10 verformbar ausgebildet ist, um sich an die atorische Fläche (3) anschmiegen zu können.
  2. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, dass der Puffer (9) entsprechend der Normalen (nT) bezüglich seiner zweiten Fläche (12) eine gleichförmige Dicke (eT) aufweist, und dass der Polierer oder die Polierschicht (10) gemäß der normalen (nP) bezüglich seiner Polierfläche (14) eine ebenfalls gleichförmige Dicke (eP) aufweist.
  3. Werkzeug nach Anspruch 2, dadurch gekennzeichnet, dass die Dicke (eT) des Puffers (9) enthalten ist zwischen 4 mm und 6 mm.
  4. Werkzeug nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Dicke (eP) des Polierers (10) enthalten ist zwischen 0,5 mm und 1,1 mm.
  5. Werkzeug nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass die Stützfläche (8) von torusartiger Form ist und zwei Hauptmeridiane MS1, MS2 umfasst, koplanar vorliegend bezüglich der Hauptmeridiane M1, M2 der Polierfläche (14), wobei diese Meridiane MS1, MS2 jeweilige Krümmungen CS1, CS2 aufweisen, die den folgenden Gleichungen genügen: 1 : CS1 = 1 : C1 - eT - ep 1 : CS2 = 1 : C2 - eT - ep wobei eT die Dicke des Puffers (9) und ep die Dicke des Polierers (10) ist.
  6. Werkzeug nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Puffer (9) mittels eines Materials ausgeführt ist, dessen Verformbarkeit unter einem Druck von 0,04 MPa größer als 5 % ist.
  7. Werkzeug nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Puffer (9) mittels Polyurethanschaum ausgeführt ist.
  8. Werkzeug nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Polierer (10) mittels Polyurethanschaum ausgeführt ist.
  9. Anwendung eines Werkzeuges nach einem der Ansprüche 1 bis 8 für das Polieren einer optischen atorischen Fläche (3).
  10. Anwendung nach Anspruch 9, dadurch gekennzeichnet, dass die Linse (1) einen Rand bzw. eine Stirn (4) von kreisförmiger Form aufweist, mit einem gegebenen Durchmesser (Φ2), wobei das Werkzeug (5) einen kreisförmigen Schnitt aufweist, dessen Durchmesser (ΦO) größer ist als der Durchmesser (Φ2) der Linse (1).
  11. Verfahren zum Polieren einer optischen Fläche (3) einer ophtalmischen Linse (1), entsprechend einer gegebenen Verschreibung, dadurch gekennzeichnet, dass die optische Fläche (3) atorisch ist, wobei das Verfahren die folgenden Schritte umfasst:
    Berücksichtigen von Werten von geometrischen Merkmalen der optischen Fläche (3) der Linse (1);
    Verwendung eines Werkzeuges (5) nach einem der Ansprüche 1 bis 8, während welcher Relativanlage und -reibung der Polierfläche (14) des Polierers (10) und der optischen Fläche (3) der Linse (1) bewirkt werden.
  12. Verfahren zum Polieren nach Anspruch (11), dadurch gekennzeichnet, dass die Linse (1) einen Rand oder eine Stirn (4) von kreisförmiger Form aufweist, umfassend vorangehend zu dem Schritt der Verwendung des Werkzeuges (5) einen Schritt des Bestimmens des Werkzeuges (5), wobei dieser Schritt selbst die folgenden Unterschritte umfasst:
    a) Bestimmung einer torischen bzw. torusartigen Fläche, angenähert an die optische Fläche (3) der Linse (1), wobei diese torische Fläche, angenäherter Torus genannt, zwei kreisförmige Hauptmeridiane umfasst, jeweilige Krümmungen C*1, C*2 derart aufweisend, dass der Wert der Krümmung C* 1 streng kleiner ist als der Wert der Krümmung C*2;
    b) Bestimmung einer torischen oder torusartigen Fläche, entsprechend der gegebenen Verschreibung, wobei die torische Fläche, Referenztorus genannt, zwei kreisförmige Hauptmeridiane umfasst, jeweilige Krümmungen C'1, C'2 derart aufweisend, dass der Wert der Krümmung C' 1 streng kleiner ist als der Wert der Krümmung C'2;
    c) Bestimmung der jeweiligen Werte der Krümmungen C1, C2 der Polierfläche (14), wobei diese Werte angegeben sind durch die folgenden Gleichungen: C1 = C*1 + ΔC1; C2 = C*2 + ΔC2,
    wobei gilt
    ΔC1, erste Korrektur genannt, ist eine Funktion:
    der Krümmungen C*1, C*2 des angenäherten Torus;
    der Krümmungen C'1, C'2 des Referenztorus; und
    des Durchmessers Φ2 des Randes oder der Stirn (4) der Linse (1);
    ΔC2, zweite Korrektur genannt, ein konstanter Wert ist.
  13. Verfahren zum Polieren nach Anspruch 12, dadurch gekennzeichnet, dass im Schritt c) die erste Korrektur ΔC1 eine Affinfunktion der Differenz C*2 - C*1 der Krümmungen C*2, C*1 des angenäherten Torus ist.
  14. Verfahren zum Polieren nach Anspruch 12 oder 13, dadurch gekennzeichnet, dass im Schritt c) die erste Korrektur ΔC1 eine Afinfunktion der Differenz C'2 - C'1 der Krümmungen C'2, C'1 des Referenztorus ist.
  15. Verfahren zum Polieren nach einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, dass in dem Schritt c) der Wert der ersten Korrektur C1 durch die folgende Beziehung angegeben ist: ΔC1 = a + b (C'2 - C'1 + c[(C'2 - C'1) - (C*2 - C*1)] + dΦ2, wobei a, b, c, d Parameter von konstantem Wert sind, und wobei (Φ2) der Durchmesser der Stirnfläche bzw. des Randes (4) der Linse (1) ist.
  16. Verfahren zum Polieren nach Anspruch 15, dadurch gekennzeichnet, dass der Wert des Parameters a enthalten ist zwischen 0 und 4 m-1.
  17. Verfahren zum Polieren nach Anspruch 16, dadurch gekennzeichnet, dass der Wert des Parameters a enthalten ist zwischen 0,2 m-1 und 3,4 m-1.
  18. Verfahren zum Polieren nach einem der Ansprüche 15 bis 17, dadurch gekennzeichnet, dass der Wert des Parameters b enthalten ist zwischen 0,01 und 0,3.
  19. Verfahren zum Polieren nach Anspruch 18, dadurch gekennzeichnet, dass der Wert des Parameters b enthalten ist zwischen 0,05 und 0,25.
  20. Verfahren zum Polieren nach einem der Ansprüche 15 bis 19, dadurch gekennzeichnet, dass der Wert des Parameters c enthalten ist zwischen -2 und -0,01.
  21. Verfahren zum Polieren nach Anspruch 20, dadurch gekennzeichnet, dass der Wert des Parameters c enthalten ist zwischen -1,5 und -0,1.
  22. Verfahren zum Polieren nach einem der Ansprüche 15 bis 21, dadurch gekennzeichnet, dass der Wert des Parameters d enthalten ist zwischen -100 m-2 und 0.
  23. Verfahren zum Polieren nach Anspruch 22, dadurch gekennzeichnet, dass der Wert des Parameters d enthalten ist zwischen -60 m-2 und -2 m-2.
  24. Verfahren zum Polieren nach einem der Ansprüche 15 bis 23, dadurch gekennzeichnet, dass der Wert der zweiten Korrektur ΔC2 enthalten ist zwischen 0 und 0,8 m-1.
  25. Verfahren zum Polieren nach Anspruch 24, dadurch gekennzeichnet, dass der Wert der zweiten Korrektur ΔC2 enthalten ist zwischen 0,1 m-1 und 0,64 m-1.
  26. Verfahren zum Polieren nach Anspruch 25, dadurch gekennzeichnet, dass der Wert der zweiten Korrektur ΔC2 gleich ist zu 0,37 m-1.
  27. Verfahren zum Polieren nach einem der Ansprüche 12 bis 26, dadurch gekennzeichnet, dass in dem Schritt a) die Bestimmung des angenäherten bzw. besten Torus dargestellt wird mittels des mathematischen Verfahrens, welches Verfahren des kleinsten Fehlerquadrates bzw. der kleinsten Quadrate genannt wird.
  28. Verfahren zum Polieren nach einem der Ansprüche 12 bis 27, dadurch gekennzeichnet, dass im Schritt a) die Bestimmung des angenäherten Torus bzw. besten Torus dargestellt wird für lediglich einen Teil der atorischen Fläche (3) der Linse (1), wobei dieser Teil einen kreisförmigen Umfang mit Durchmesser (Φ1) aufweist, koaxial vorliegend bezüglich des Randes bzw. der Stirnfläche (4) der Linse (1).
EP02290853A 2001-04-10 2002-04-05 Torisches Werkzeug zum Polieren einer optischen Fläche einer atorischen Linse und Polierverfahren mit einem solchen Werkzeug Expired - Lifetime EP1249307B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0104872 2001-04-10
FR0104872A FR2823143B1 (fr) 2001-04-10 2001-04-10 Outil torique de polissage d'une surface optique d'une lentille, et procede de polissage d'une surface atorique au moyen d'un tel outil

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EP1249307A2 EP1249307A2 (de) 2002-10-16
EP1249307A3 EP1249307A3 (de) 2002-12-04
EP1249307B1 true EP1249307B1 (de) 2005-02-02

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US (1) US6814650B2 (de)
EP (1) EP1249307B1 (de)
AT (1) ATE288339T1 (de)
DE (1) DE60202804T2 (de)
ES (1) ES2236455T3 (de)
FR (1) FR2823143B1 (de)

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WO2006003939A1 (ja) * 2004-06-30 2006-01-12 Hoya Corporation 眼鏡レンズの製造方法
ES2249990B1 (es) * 2004-08-03 2007-08-01 Indo Internacional S.A. Herramienta y procedimiento para pulir superficies opticas.
DE102005010583A1 (de) * 2005-03-04 2006-09-07 Satisloh Gmbh Polierteller für ein Werkzeug zur Feinbearbeitung von optisch wirksamen Flächen an insbesondere Brillengläsern
EP2031435B1 (de) * 2007-12-28 2019-02-27 Essilor International Verfahren zur bestimmung eines konturendatensatzes einer brillenfassung
ATE494985T1 (de) * 2008-07-08 2011-01-15 Indo Int Sa Werkzeug zur reinigung konventioneller und frei geformter optischer oberflächen
CN102990491A (zh) * 2012-11-29 2013-03-27 江苏宜达光电科技有限公司 球面玻璃的研磨治具
CN103481155A (zh) * 2013-08-23 2014-01-01 中国航天科工集团第三研究院第八三五八研究所 一种Si非球面透镜的数控加工方法
DE102014206424A1 (de) 2014-04-03 2015-10-08 Carl Zeiss Vision International Gmbh Polierwerkzeug sowie Vorrichtung und Verfahren zur formfehleroptimierten Polierbearbeitung von Brillenlinsenoberflächen und Gießformschalen zur Brillenlinsenherstellung
DE102016006741A1 (de) 2016-06-06 2017-12-07 Schneider Gmbh & Co. Kg Werkzeug, Vorrichtung und Verfahren zum Polieren von Linsen
PT3272457T (pt) * 2016-07-21 2019-06-27 Delamare Sovra Um método para fabricação em série de ferramentas de polimento de grau ótico
EP3272458B1 (de) * 2016-07-21 2019-03-27 Delamare Sovra Verfahren zur serienherstellung von polierwerkzeugen für optische qualität
EP3272456B1 (de) * 2016-07-21 2019-03-13 Delamare Sovra Verfahren zur serienherstellung von polierwerkzeugen für optische qualität
EP3800008A1 (de) 2019-10-02 2021-04-07 Optikron GmbH Vorrichtung und verfahren zum schleifen und/oder polieren planer flächen von werkstücken

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US20030017783A1 (en) 2003-01-23
US6814650B2 (en) 2004-11-09
FR2823143A1 (fr) 2002-10-11
EP1249307A2 (de) 2002-10-16
ATE288339T1 (de) 2005-02-15
ES2236455T3 (es) 2005-07-16
EP1249307A3 (de) 2002-12-04
FR2823143B1 (fr) 2003-07-04
DE60202804D1 (de) 2005-03-10
DE60202804T2 (de) 2006-03-30

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