Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
  • B29C63/02—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material
  • B29C63/16—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material applied by "rubber" bag or diaphragm
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B38/00—Ancillary operations in connection with laminating processes
  • B32B38/18—Handling of layers or the laminate
  • B32B38/1825—Handling of layers or the laminate characterised by the control or constructional features of devices for tensioning, stretching or registration
  • B32B38/1833—Positioning, e.g. registration or centering
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
  • B29L2011/00—Optical elements, e.g. lenses, prisms
  • B29L2011/0016—Lenses

Definitions

• the present invention relates to a method for adjusting a position of a transparent element. It also relates to a device for preforming and applying a film pellet to a transparent element, which is adapted to implement such a method.
• transparency refers to the ability of an element to be traversed by light, so that objects which are located on one side of the element are visible, without distortions, from on the other side of the same element.
• one of the two elements is transparent, it is difficult to locate its position to adjust it to that of the other element, visually or using a camera.
• the use of such marks which are visible and inscribed on the element may be incompatible with the transparency function of the element concerned.
• a first object of the invention is to provide a method of aligning an element with respect to references of a reference position, which is adapted when the element is transparent.
• a second object of the invention is to provide such a method that can be implemented inside a restricted volume around the transparent element.
• a third object of the invention is to provide such a method that is simple and quick to implement.
• a fourth object of the invention is to provide such a method that can be implemented in an automated manner.
• the present invention provides a method for adjusting a position of a transparent element which comprises two faces connected laterally by a peripheral edge, the element being transparent for a direction of propagation of the light passing through. both sides.
• the method comprises the following steps:
• / 1 / have at least one light source, with light outputs which are distributed outside and around the peripheral edge of the transparent element in a projection perpendicular to one of the faces of the transparent element, whereby a portion of the light produced by the light source is diffused by at least a portion of the peripheral edge of the transparent element;
• the position of the transparent element is identified by forming an image from a light that is diffused by the peripheral edge of this element.
• This optical method of identifying the position of the element is therefore compatible with the transparency of this element for a light that passes through its two faces.
• Such a method according to the invention is therefore of the optical type. It therefore requires no contact between a detector and the transparent element, nor any electrical sensor. In addition, no marking is necessary on the element. The process is therefore simple and quick to implement.
• the optical system that is used for this namely the image forming system
• the optical system that is used for this can be placed at a distance from the transparent element.
• Various intermediate components may be located between the transparent element and the imaging system, if these intermediate components are themselves transparent.
• the method of the invention can therefore be used when the transparent element is located in a volume that is congested or restricted, particularly inside an enclosure. In this case, the provision of an opening in the enclosure is sufficient to image the peripheral edge of the transparent element with the imaging system.
• a method according to the invention can easily be automated, by using an image processing that reproduces the portion of the peripheral edge of the optical element that is diffusing and illuminated.
• Step 131 can then be performed by operating mechanisms for moving the transparent element.
• Such mechanisms may include in particular a motorized table for moving along two axes of translation, which is equipped with stepper motors. They may further comprise a fixing head of the transparent element, which is adapted to rotate the latter along a longitudinal axis which is secant with a plane parallel to the two translation axes of the displacement table.
• the markers that indicate the reference position of the transparent element can be introduced in different ways into the image that is inputted from the portion of the peripheral edge of this element.
• the references of the reference position can be captured in the image along with the pictorial portion of the peripheral edge of the transparent element.
• the references of the reference position of the transparent element are present near this element, and are imaged with the portion of the peripheral edge of the latter in the same shot.
• the markers that indicate the reference position can be entered separately from the image of the portion of the peripheral edge of the transparent element. They can then be reported later in this image, for example by superposition.
• another image of the references of the reference position may be formed by the image forming system, separately from the image of the portion of the peripheral edge. of the transparent element, with a shooting position of the system which is identical between the two images. The two images can then be superimposed later, possibly correcting optical effects of magnification, parallax, inclination of a direction of view of the imaging system, etc.
• the image forming system may comprise a telecentric lens.
• the use of such an objective may reduce parallax effects that may interfere with the adjustment of the position of the element from the image (s) being inputted (s). transparent relative to the references of the reference position.
• a light diffusing element can be interposed between the light outputs and the peripheral edge of the transparent element. In this way an interval of values can be increased, for the angles of incidence of the light which is sent by the source on the peripheral edge of the transparent element. The light that is scattered by the edge of the transparent element is then more distributed along this edge, which reduces localized light saturations in the image and increases the portion of the edge that is imaged.
• a method according to the invention can be used for many applications, among which the following are cited in particular:
• the transparent element comprises the eyeglass lens to be cut in accordance with a housing of the glass in an ophthalmic eyeglass frame, and the references of the reference position correspond to a template which identifies the shape of the housing of the glass in the spectacle frame;
• the transparent element comprises the template and the markers that indicate the reference position determine a frame of the template, commonly called "boxing center"; and - the application of a film on a glass of ophthalmic spectacles.
• the transparent element comprises the eyeglass lens cut in accordance with a housing of the lens in a frame of ophthalmic spectacles.
• the markers which indicate the reference position are then formed by a peripheral edge of a pellet of the film which is intended to be applied on one side of the spectacle lens, with the respective peripheral edges of the spectacle lens and the film pellet. which are intended to coincide with each other in accordance with a predetermined withdrawal.
• the film pellet may itself be as transparent, with at least a portion of its own peripheral edge diffusing another part of the light produced by the light source when the pellet of the film is held near the outputs from light.
• An image of the portion of the peripheral edge of the film pellet can then also be captured by the imaging system. This image is formed with the other portion of light that is diffused by the portion of the peripheral edge of the film pellet.
• the spectacle lens and the film pellet can be arranged at the same time between the light outputs, according to the projection perpendicular to one of the faces of the spectacle lens, so that the diffusing portions of the respective peripheral edges the spectacle lens and the film pellet appear simultaneously in the same image which is formed by the imaging system.
• step 13 / may be performed so as to adjust a relative disposition of the respective peripheral edges of the spectacle lens and the film pellet, relative to each other at the same time. inside a projection plane.
• the method may then further include the following step:
• IAI apply the film pellet against one side of the spectacle lens, so as to assemble them with their respective edges which coincide according to the predetermined withdrawal.
• the film pellet may be preformed before step 131, according to a shape of the face of the spectacle lens on which this film pellet is applied in step IAI.
• the invention also proposes a device for preforming a film pellet which is carried by a deformable membrane, and for applying this pellet to a transparent element.
• This device is adapted to implement a method as described above, in order to adjust the position of the transparent element relative to the film pellet.
• Such a device may include:
• a support (holder” in English), which is adapted to hold the transparent element in the enclosure, and to move it parallel to the wall opening, as well as to turn it around an axis intersecting this opening of wall;
• At least one light source which is arranged to illuminate at least a portion of a peripheral edge of the transparent element when it is held by the support, through light outlets distributed outside and around the peripheral edge of the transparent element in a projection perpendicular to a face of this element;
• an image forming system which is adapted to form an image of the portion of the peripheral edge of the transparent element with a part of a light produced by the light source and diffused by this portion of the peripheral edge of the transparent element, when this element is held by the support; and - Means for applying the transparent element against the film pellet, when the latter is carried by the membrane.
• the opening of the wall of the enclosure and the support may be further arranged for the light source to illuminate through the light outputs, at the same time as the portion of the peripheral edge of the element. transparent which is held by the support, a portion at least of a peripheral edge of the film pellet which is carried by the membrane.
• the support may also be adapted to move the transparent element inside the enclosure parallel to the axis which intersects the opening of the wall of the enclosure. In other words, it makes it possible to move the transparent element towards or away from the wall opening.
• FIG. 1 is a sectional view of a device according to the invention for preforming and applying a film pellet on a spectacle lens;
• FIGS. 2a and 2b reproduce images formed using methods according to two variants of the invention.
• FIG. 3 is a block diagram of the steps of a method for gluing a film pellet onto a spectacle lens, using the invention.
• the transparent element is consisting of a glass of glasses that has been cut out in the shape of a housing of this glass in a frame of ophthalmic spectacles.
• This glass which is referenced 1 in the figures, has two optical faces which are connected laterally by a peripheral edge Bi.
• the edge Bi corresponds to the shape of the housing in the spectacle frame.
• the film pellet which is referenced 2 has been cut beforehand so that it has a peripheral edge B 2 which also corresponds to the shape of the housing of the glass in the frame.
• the edge B 2 of the pellet 2 may be provided to come exactly in coincidence with the edge Bi of the spectacle lens 1 when it is applied to the latter.
• the edge B 2 may be provided to have a predetermined setback with respect to the edge Bi, when the film pellet 2 is applied to the spectacle lens 1.
• the withdrawal can be positive, that is to say forward with respect to the edge Bi, or negative, that is to say behind the edge Bi.
• the face of the eyeglass lens 1 on which the wafer 2 is to be applied is curved while the film wafer 2 is initially flat.
• the application face of the glass 1 can be convex or concave.
• the pellet 2 will then be deformed to be applied to the glass 1, in accordance with the shape of the application face of the latter.
• the edge B 2 of the pellet 2 can be determined beforehand taking into account the deformation of the pellet 2.
• the deformation of the pellet 2 can cause local withdrawals from the edge B 2 , which are compensated in the shape of the edge B 2 which has been predetermined.
• FIG. 1 A particularly advantageous device is now described with reference to FIG. 1, which makes it possible to preform the pellet 2 and then to apply it to the spectacle lens 1.
• the following references refer to the following items:
• 100 a side wall of a variable internal pressure vessel
• 101 an upper wall of the enclosure, with an opening O101;
• 102 a system for fixing a deformable membrane through the opening O101;
• 1 1 1 a moving part that can be moved parallel to the bottom wall 1 10 of the enclosure;
• the upper wall 101 may have an annular shape around the opening O101, whose circumference is flat. It can be fixed firmly, for example by means of several screws, on the upper edge of the side wall 100. When a peripheral edge of the deformable membrane 300 is inserted between the walls 100 and 101, the screws constitute the fastening system. 102 of the membrane 300 around the opening O101. The membrane 300 thus closes the variable pressure enclosure in a sealed manner.
• the upper wall 101 with the fixing system 102 of the membrane 300 around the opening O101 can be removable above the side wall 100 to close the enclosure.
• the upper wall 101 can be brought and withdrawn laterally, for example by sliding on rails.
• the membrane 300 can be fixed around the opening O101 while the enclosure remains open, and the enclosure can be closed quickly by simply replacing the upper wall 101 on the side wall 100.
• the system 200 for varying and controlling the pressure in the enclosure is not shown in detail, it being understood that those skilled in the art are familiar with such systems.
• the membrane 300 which is held by the fixing system 102, has in the opening O101 a deformation which is variable as a function of the pressure produced by the system 200. This deformation is directed towards the inside or the outside of the enclosure according to the system 200 produces a depression or an overpressure in the chamber relative to the outside thereof.
• the film pellet 2 is retained on the face of the membrane 300 which is turned towards the inside of the enclosure.
• an intermediate adhesive layer may be used between the wafer 2 and the membrane 300.
• This adhesive layer is advantageously adapted so that the membrane 300 can be peeled later, after the wafer 2 has itself been permanently assembled with the glass. glasses 1.
• the adhesive layer is adapted so that the pellet 2 is deformed at the same time as the membrane 300 when the pressure inside the enclosure is varied. In this way, the pellet 2 can be preformed before being applied to the spectacle lens 1. During this preforming, the pellet 2 remains parallel to and connected to the membrane 300.
• the pellet 2 and the membrane 300 can be heated before being deformed, to reduce stresses that may appear in the pellet during preforming and to avoid possible defects that may result, such as stretching, cracking or delamination.
• the bottom wall 1 10 has an orifice O 1, which can be centered with respect to a longitudinal axis of the enclosure, denoted AA.
• the moving part 1 1 1 closes the orifice Oi.
• it has a projecting portion 112 which extends through the orifice O 1 being narrower than this orifice, in all directions parallel to the bottom wall 1 10.
• the projecting portion 1 12 is compatible with movements of the moving part 1 1 1 according to these directions.
• the portion 1 12 serves both to drive the moving part 1 1 1 in displacement and to hold the support 10.
• a system for controlling the movements of the moving part 11 may comprise a set of rectilinear slides oriented along two axes X and Y, which are parallel to the bottom wall 10, and preferably perpendicular to each other and transverse. with respect to the longitudinal axis AA of the enclosure.
• the moving part 1 1 1 when assembled with these slides, forms a small two-axis displacement table, whose fixed part is connected to the bottom wall 1 10.
• the reference 120 generally designates the parts of the control system. displacements which are movable only along the X axis, and reference numeral 121 generally designates the parts of this system which are movable along the Y axis with respect to the parts 120.
• the reference 121a designates the slides which allow the parallel displacements to the Y axis.
• the slides of the displacements parallel to the X axis are not visible in FIG. 1, being situated in front of and behind the plane of this figure.
• micrometric screws which make it possible to control the lengths of displacements along the X and Y axes are not shown.
• Such a displacement control system is known per se, so that it is not necessary to describe it in more detail.
• the movable part 1 1 1 is connected to the movable part 121 by its projecting portion 1 12, so that it can be displaced by translation in any directions which are combinations of two translation components respectively parallel to the X and Y axes
• the plane of the X and Y axes is the plane of displacement of the moving part 1 1 1. It is advantageously parallel to the plane of the opening O101 which is closed by the membrane 300.
• the support 10 of the spectacle lens 1 extends inside the enclosure, in the direction of the opening O101. It is carried by the projecting portion 1 12 of the movable part 1 1 1 and is adapted to rigidly hold the spectacle lens 1 in the enclosure.
• a support 10 may comprise a rod ("shaft") 1 1 which passes through the projecting portion 1 12, and which is provided with a base 12 at its inner end in the enclosure.
• a fixing head 13 which is adapted to firmly hold the spectacle lens 1, is itself fixed on the base 12.
• the rod 1 1 can slide parallel to the axis AA through the projecting portion 1 12, and rotate about an axis which is connected to the moving part 1 1 1 and parallel to the axis AA (circular arrow in Figure 1).
• the projecting portion January 12 may be provided with guides 14 and a seal 15, which may be of the type with internal lip seal or seal SPI.
• the spectacle lens 1 can be moved in several ways with respect to the deformable membrane 300, by controlling these movements from outside the enclosure. On the one hand, it can be translated parallel to the plane of the X and Y axes, to be brought to the right of the pellet 2. On the other hand, it can be rotated to orient it according to an orientation of the pellet 2 in the opening O 1 0 1 . In addition, the eyeglass lens 1 can be brought closer to the patch 1 by pressing the rod 11 into the chamber, through the bottom wall 110.
• the lighting system 400 is disposed on the side of the side wall 100 which is internal to the enclosure, near the opening O 1 0 1 . It may comprise an annular support 401 which follows the upper edge of the side wall 100, light output sections 402 and optionally a diffusing element 403, also of annular shape. Many embodiments of the illumination system 400 may alternatively be used to arrange the light output sections 402 angularly about the axis AA to continuously illuminate the entire peripheral edge Bi of the eyeglass lens. the space-saving embodiments of the lighting system 400 include the use of a flexible printed circuit strip which forms the support 401, and which carries light-emitting diodes distributed along this band. In this case, the emission surfaces of the diodes form the output sections 402.
• optical fibers may be attached to the carrier 401, with reflective micro-prisms that are attached to their output sections to direct to the carrier.
• AA axis the light of a distant light source.
• the light source may be located outside the enclosure and the optical fibers then pass through the side wall 100.
• the diffusing element 403 may be a translucent ring, one of whose faces has a roughness suitable for effectively diffusing the light. Such roughness can be produced in one of the ways known to those skilled in the art, depending on the material constituting the element 403.
• the diffusing element 403 may be Teflon®.
• the system 400 emits light towards the edge Bi of the spectacle lens 1. Part of this light is then diffused by the edge Bi, in variable directions inside the enclosure. In particular, rays secondary luminous Ri are thus produced, which come from the edge Bi and which pass through the opening O 1 0 1 of the upper wall 101 of the enclosure.
• the diffusing element 403 makes it possible to illuminate the entire edge Bi more uniformly, so that certain portions thereof which are situated in front of the light output sections 402 are not too brightly lit, and that others Bi edge portions that are located between two outlet sections 402 are sufficiently illuminated.
• the entire edge B 1 of the glass 1 returns in diffuse form of light through the opening O 1 0 1 .
• the spectacle lens 1 being transparent between its two optical faces, it does not return light outside its peripheral edge B 1 .
• the peripheral edge B 2 of the latter is illuminated by the light which is coming from the outlet sections 402, through the diffusing element 403.
• the edge B 2 also diffuses part of this light through the opening O 1 0 1 when the membrane 300 is transparent.
• the reference R 2 denotes a secondary radius of this light which is diffused by the edge B 2 of the pellet 2.
• the center of the film pellet 2 does not produce diffused light when the film used is transparent.
• the peripheral edge B 2 of the pellet 2 thus forms a reference position mark for the glass 1.
• the edge B 2 may be completed by alignment lines which are drawn around the pellet 2, outside the edge B 2 , and which are also diffusing for the light coming from the exit sections 402. such lines of alignment may constitute a test pattern. They may be formed by cuts which are made in a margin of the film which has been left on the membrane 300, outside the edge B 2 , and which is separated from the pellet 2 by cutting the edge B 2 .
• the imaging system 500 includes a lens 501 which is associated with an image sensor 502, an image processing unit 503 and a display screen 504. It is arranged so that the lens 501 forms an image on the sensor 502, and this image is processed by the unit 503 and displayed on the screen 504.
• the objective 501 is disposed outside the enclosure, opposite the opening O 1 0 1 .
• the image sensor 402 may be 1024x768 pixels, for example.
• the image forming system 500 makes it possible to visualize at the same time the glass 1 and the pellet 2 on the screen 504 (FIG. 2b). If the pellet 2 is not transparent, but the membrane 300 is, only the edge B 2 of the pellet 2 is displayed.
• the image forming system 500 is adapted to provide images of the eyeglass lens 1 and the wafer 2, separately or together, without changing the position or focus setting of the lens 501.
• the objective 501 is designed so that the images formed have a depth of field which is greater than the distance separating the edges Bi and B 2 along an optical axis ZZ of the objective.
• the eyeglass lens 1 and the film wafer 2 are initially spaced from each other, with a separation distance that can be about 1 cm (centimeter), for example, along the axis AA. Because of this distance, several parallax defects can disturb the perception of the alignment of the edges Bi and B 2 via the image forming system 500.
• a first defect can result from a transverse shift that would initially be important, between the glass 1 and the pellet 2, parallel to the plane of the X and Y axes. This first fault is removed by initially positioning the glass 1 approximately to the right of the pellet 2.
• Two other parallax defects may result from an offset transverse lens 501 relative to the glass 1, and a deflection angle between the optical axis ZZ and the longitudinal axis AA.
• the objective 501 can be maintained above the opening O101 so that its optical axis ZZ substantially passes through the boxing center of the spectacle lens 1 and is perpendicular to the average plane of the glass.
• the objective 501 can be telecentric, to reduce these parallax defects.
• the glass 1 and the pellet 2 are simultaneously displayed on the screen 504, in the same image when the membrane 300 and the pellet 2 are both transparent (Figure 2b).
• the operator can rotate the support 10 until the edge Bi of the glass 1 appears parallel to the edge B 2 of the pellet in the image. It also actuates the movement control system of the moving part 1 1 1, to laterally move the glass 1 relative to the pellet 2, along the two axes X and Y. It continues to move the glass 1 until the edges Bi and B 2 appear one inside the other, with an apparent separation interval which is constant over their entire length.
• the image forming system 500 updates in real time the image that is displayed on the screen 504, so that the operator visually controls the rotations and translations that he applies to the glass 1. At the end of the process, the glass 1 was brought under the pellet 2 being centered precisely with respect to it, and oriented precisely as it.
• a second procedure can be used alternately when the membrane 300 is transparent, and can be easily automated.
• the membrane 300 is not initially placed on the enclosure, so that the spectacle lens 1 appears directly through the opening O101.
• a first image is then entered with the system 500, which shows the glass 1 at its initial position in the enclosure (FIG. 2a).
• An image analysis software that is implemented in the unit 503 can detect the brightness of the edge Bi in the image, and request that the support 10 with the lens 1 be adjusted in height with respect to the lighting system 400 , to increase this brightness of the edge Bi.
• the membrane 300, with the pellet 2 retained on it, is fixed on the enclosure using the system 102 or by bringing back the upper wall 101 already provided with the membrane 300, then a second image is captured without moving or changing the settings of objective 501.
• the second image shows the patch 2.
• the use of overlay software and image processing makes it possible to automatically identify the edges Bi and B 2 , and to determine the differences between their positions and their respective orientations.
• Unit 503 can then be used to actuate the control system of the movements of the moving part 1 1 1, and turn the support 10 according to these differences.
• an additional image can be captured, to verify that the edges Bi and B 2 appear parallel and centered with respect to each other.
• a first step the spectacle lens 1 is fixed on the fixing head 13, preferably so that its boxing center is located on the longitudinal axis A-A of the enclosure.
• a first photograph can then be taken with the imaging system 500, which shows the glass 1 by its diffusing edge Bi (step B).
• the height of the glass 1 in the enclosure can be modified to increase the amount of light that is diffused by the edge Bi so that it appears lighter. In this case, the glass 1 is photographed again.
• the membrane 300 is then fixed on the enclosure (step C), with the pellet 2 being carried by the membrane and facing the inside of the enclosure.
• the pattern that can be drawn on a margin that surrounds the pellet 2, on the membrane 300, can help center the pellet 2 with respect to the axis A-A.
• the pellet 2 may be provided with an adhesive layer which is exposed and oriented towards the glass 1. Alternatively, a portion of glue may be deposited on the application face of the glass 1.
• the pressure in the chamber is varied, to preform the pellet 2 (step D), possibly by simultaneously heating the pellet to perform a thermoforming thereof.
• the edge B 2 of the pellet 2 then takes its final form.
• the final shape of the edge B 2 corresponds precisely to that of the edge Bi of the glass 1.
• unit 503 can correct numerically certain parallax defects, from height data which are transmitted respectively for the glass 1 and for the pellet 2.
• the glass 1 is precisely aligned with the pellet 2, it is applied against the latter by pressing the rod 1 1 into the chamber, and pushing the pellet with the glass towards the outside of the enclosure (step BOY WUT).
• the pellet 2 then adheres permanently to the application face of the glass 1, by the intermediate adhesive layer or by the adhesive portion.
• the pressure in the chamber can then be reduced to the level of the external pressure, the membrane 300 is released by releasing the fixing system 102, then the spectacle lens 1 is released from the fixing head 13.
• the membrane 300 is then disintegrated from the pellet 2, the latter remaining stuck on the glass 1.
• the membrane 300 may be peeled off.
• peripheral edge of the film pellet may be intended to recess relative to the peripheral edge of the spectacle lens, when the pellet and the glass are applied to one another.
• the invention aligns the glass with the wafer to achieve the desired shrinkage.
• the method of the invention has been described in the context of bonding a film pellet to a spectacle lens, it can be used for other applications, the ophthalmic field or another field. In the ophthalmic field, it can also be used to check whether the trimming of a spectacle lens conforms to the shape of a housing of an eyeglass frame, or to raise the shape of a glass housing jig in such a mount.

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• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Eyeglasses (AREA)
• Length Measuring Devices By Optical Means (AREA)
• Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

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• 2009
  • 2009-09-28 FR FR0956697A patent/FR2950707B1/fr not_active Expired - Fee Related
• 2010
  • 2010-09-22 EP EP10770604A patent/EP2483738A1/de not_active Withdrawn
  • 2010-09-22 CN CN201080052713.2A patent/CN102667577B/zh not_active Expired - Fee Related
  • 2010-09-22 WO PCT/FR2010/051979 patent/WO2011036402A1/fr active Application Filing
  • 2010-09-22 US US13/497,213 patent/US9352510B2/en not_active Expired - Fee Related

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