US20080051017A1 - Process for holding an optical lens on a holder of a lens machining equipment - Google Patents
Process for holding an optical lens on a holder of a lens machining equipment Download PDFInfo
- Publication number
- US20080051017A1 US20080051017A1 US11/507,941 US50794106A US2008051017A1 US 20080051017 A1 US20080051017 A1 US 20080051017A1 US 50794106 A US50794106 A US 50794106A US 2008051017 A1 US2008051017 A1 US 2008051017A1
- Authority
- US
- United States
- Prior art keywords
- wafer
- lens
- holder
- optical article
- process according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
- B24B13/005—Blocking means, chucks or the like; Alignment devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
- B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
- B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
- B24B9/14—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
- B24B9/146—Accessories, e.g. lens mounting devices
Abstract
A process is provided for rapidly holding an optical article having a convex surface on a holder of a lens machining equipment, the holder being equipped with a suction chuck comprising a cavity with a side wall and sealing means on a front end of the side wall, comprising the following steps:
/a/ providing a flexible curved wafer with a concave surface arranged to close the cavity at the front end of the side wall;
/b/ a fixing step in which the wafer is fixed onto the holder by providing vacuum between the concave surface of the wafer and the suction chuck; and
/c/ a pressing step in which the concave surface of the optical article is pressed onto the concave surface of the wafer, an adhesive material being arranged between the wafer and the optical article
The assembly is tight enough for sustaining machining forces, and the lens can be released rapidly.
Description
- The invention relates to a process for holding an optical article, for example a lens, on a holder of a lens machining equipment. In particular, it is useful when manufacturing an ophthalmic lens.
- When producing an optical lens, and especially an ophthalmic lens, it is necessary to fix the lens on the holder of a machining equipment for machining the lens. For example, the machining corresponds to the lens surface generating step, the fining step, the polishing step or the edging step in the lens production process. For an ophthalmic lens, such production steps are carried out in a prescription lab where a semi-finished lens is machined so as to obtain a spectacle lens which corresponds to the ametropy of a lens carrier.
- Usually, a wax or an alloy is used for fixing firmly the semi-finished optical lens on the equipment holder. The wax or alloy connects the convex surface of the semi-finished lens to an end part of the holder. But such method requires heating the wax or alloy for making it adhering to the lens and to the holder and, after machining has been performed, heating again for removing the lens from the holder. During each heating step, the lens shape may be modified due to thermal stresses created in the lens material. Then, such lens deformation prevents from achieving accurate machining, and may also alter the lens material. Furthermore, such method with heating steps is time-consuming and costly. Such method involves in general toxic alloys, generates waste, in particular contamined wax and alloys.
- For avoiding these drawbacks of wax- or alloy-based holding methods, other methods have been developed which are based on vacuum use. For example, U.S. Pat. No. 3,994,101 discloses using a suction chuck, but this method may create lens deformation, especially when the lens is rather thin. Furthermore, the vacuum sealing produces scratches on the convex lens surface.
- U.S. Pat. No. 5,567,198 describes a compression sleeve chuck suitable for holding a lens, but such holding system is rather complex for easy fitting to conventional machining equipment. It also discloses using an intermediate wafer arranged between the convex lens surface and the chuck, which is connected on one side to the chuck and on the other side to the lens by means of instant adhesive films.
- U.S. Pat. No. 6,863,602 corresponding to WO 2004/050303 discloses using a holder provided with a flexible surface which is supported by a low-melting point material. The flexible surface can conform permanently to the surface of a lens to be machined, but heating steps are still required for holding the lens on such holder.
- Finally, the Applicant has also developed a tool device whose shape adapts automatically to the surface of an ophthalmic lens. This tool device is described in U.S. Pat. No. 4,831,789. It comprises a deformable buffer which encloses small-sized grains. When the lens is pressed against a resilient membrane of the buffer, this buffer membrane conforms to the lens surface. Then, air is pumped from the inner of the buffer, while retaining the grains. The grains are thus closely packed together, so that they cannot move any longer and the shape of the membrane is fixed. Such device is also rather complex and requires a back-supporting system for supporting the buffer on a side opposite to the resilient membrane.
- An object of the present invention is to propose a method for holding a semi-finished lens on a machining equipment holder, which is simple and easy to implement, does not implement any wax or alloy and is thus environment friendly.
- To this end, the present invention provides a process for holding an optical article having a convex surface on a holder of a lens machining equipment, the holder being equipped with a suction chuck, the chuck comprising a cavity with a side wall and sealing means on a front end of the side wall, comprising the following steps:
-
- /a/ providing a flexible curved wafer with a concave surface arranged to close the cavity at the front end of the side wall;
- /b/ a fixing step in which the wafer is fixed onto the holder by providing vacuum between the concave surface of the wafer and the suction chuck; and
- /c/ a pressing step in which the concave surface of the optical article is pressed onto the concave surface of the wafer, an adhesive material being arranged between the wafer and the optical article
- In a process according to the invention, the optical element is connected to the holder of the machining equipment via a three-level connecting system. First, a vacuum chuck is fixed to the holder. Second, a wafer is vacuum-maintained on the chuck and the optical element is finally stuck to the wafer with an adhesive material used as bonding medium.
- Using a flexible wafer between the optical element and the suction chuck ensures that all stresses produced by the vacuum implementation are accommodated by the wafer. This also results from the chronological order between steps /b/ and /c/. The stress level produced in the lens in then significantly reduced, so that no change occurs in the lens shape. Therefore, an accurate lens machining can be achieved, because the positioning of the optical element with respect to the holder is accurately defined, and because the optical element shape is not altered after machining for recovering the optical element.
- Using a flexible wafer also ensures that the wafer is blocked firmly to the vacuum chuck. An important optical element holding strength can be obtained, because the flexible wafer together with the sealing means provides a tight vacuum sealing. Then lens machining can performed, even if it involves important forces transmitted from the optical element to the holder.
- The process of the invention may be used for a wide range of optical articles such as optical lenses, semi-finished optical lenses, screens for portable devices such as PDA or mobile phone. Optical lenses may be single vision lenses or any other ophthalmic lenses with numerous design such as for example spherical, toric or progressive design. They can also be lenses of other types, such as microscope, photographic, telescope lenses.
- According to an embodiment of the invention, the adhesive material is selected in the list consisting of: a pressure sensitive adhesive, a hot melt adhesive, an instant curable adhesive, a UV curable adhesive, a thermal curable adhesive.
- Using a pressure sensitive adhesive for sticking the optical element to the wafer enables easy removal of the optical element from the holder of the machining equipment. This can be achieved in a two-step process. First, the vacuum in the cavity of the suction chuck is suppressed, so that the optical element together with the wafer is removed from the suction chuck. Then, the wafer is removed from the convex surface of the optical element.
- An advantage of a process according to the invention results from the fact that no toxic material is used. Furthermore, materials that are used are very cheap, such as a pressure sensitive adhesive, or can be used again, such as the flexible curved wafer.
- Another advantage results from the fact that neither heating step nor cooling step is involved. Then, the optical element is free of thermal stresses. In addition, all steps can be implemented rapidly, so that a process according to the invention allows high production rate in a prescription lab for manufacturing ophthalmic lenses.
- Every suitable sealing means known by the men skill in the art may be used in the frame of the present invention. According to an embodiment of the invention, the sealing means is selected in the list consisting of: a O-ring seal, a V-ring seal, a silicone ring.
- According to an improvement of the invention, the suction chuck may further comprise a rigid support arranged within the cavity. It is arranged so that a rear surface of the flexible curved wafer is in contact with the rigid support on a side opposite to the wafer concave surface, once said wafer has been fixed to the holder in step /b/. Such support helps to further avoid deformation of a lens being machined, by providing a back contact to the wafer for supporting the machining forces. This may be useful when the lens thickness is small, especially for negative lenses.
- The invention also provides a process for machining a optical element having a convex surface, which process comprises the following steps:
-
- /1/ holding the optical element on a holder of a lens machining equipment, using a holding process as described above;
- /2/ machining the optical element;
- /3/ removing the optical element together with the flexible curved wafer from the holder by removing the vacuum in the cavity of the suction chuck; and
- /4/ removing the flexible curved wafer from the optical element.
- The invention also relates to a lens machining equipment comprising a holder being equipped with a suction chuck, the chuck comprising a cavity with a side wall and sealing means on a front end of the side wall According to an embodiment, the suction chuck further comprises a rigid support arranged within the cavity, so that a rear surface of a flexible curved wafer with a concave surface is in contact with the rigid support on a side opposite to concave surface of the wafer, once the wafer has been fixed to the holder.
- These and other aspects of the invention will become apparent from the non-limiting implementations described hereafter in reference to the following drawings:
-
FIGS. 1-4 illustrate steps for holding a lens onto a machining equipment holder according to the present invention; and -
FIGS. 5-7 illustrate steps for removing the lens from the holder. - In theses figures, identical reference numbers refer to identical elements. Furthermore, for clarity reason, the sizes of the elements represented do not correspond to sizes of actual elements.
- On
FIG. 1 , reference 1 refers to a suction chuck according to the invention. It comprises abottom part 2 and a side wall 3 of generally cylindrical shape, so as to form an inner cavity C. The side wall 3 has a limited height, so that the suction chuck 1 can be easily fitted on aholder 100 of a lens machining equipment. Such lens machining equipment may be a lens surface generating machine, a lens polishing or fining machine, an edging machine, etc. In particular, it can be fitted on machines such as LOH's V95 or Toro-X-S/SL. Chuck 1 can be, for example, made of aluminum for light-weight purpose, or any other rigid material. Self-centeringpart 7 a and screws 7 b allow tight fixing of the suction chuck 1 onto theholder 100, but other equivalent systems may be used, depending on theactual holder 100. - The side wall 3 is provided with an O-ring seal 4 at its end opposite the
bottom part 2. It is also provided on a side with anair conduct 5 which connects the cavity C to a pumping system (not represented) outside the suction chuck 1. Avalve 6 is arranged on theconduct 5. - The suction chuck 1 may also comprise a
rigid support 8 which is arranged within thecavity C. Support 8 may be of variable shape, such as a rigid 1.5 mm thick curved wafer of polycarbonate. It may also be comprised of a pad adjustable in height in a middle part of cavity C. - A flexible
curved wafer 10 has a concave surface S10. Surface S10 may be spherical, corresponding to base values ranging from 2.0 to 8.0, for example. The base value for the curvature of the wafer surface S10 is selected depending on the curvature of the front surface of the lens to be machined. It is selected so as to match approximately the front convex surface of the lens. The other surface of thewafer 10 is referenced S11 and is designed so that it can fit to the O-ring seal 4. Thewafer 10 is preferably made of a thermoplastic material, such as polycarbonate (PC), polymethylmetacrylate (PMMA), polyester, or nature absorbing material like, for example, nature absorbing plastics, etc., so that it is cheap. Thewafer 10 can be either disposable or adapted for multiple uses for holding several lenses that are to be machined successively. It has a thickness e suitable for thewafer 10 being flexible. Advantageously, the thickness e is comprised between 0.3 and 3 mm (millimeter). For example, e is equal to about 0.5 mm. The diameter ofwafer 10 is selected depending on the diameter of the lens to be machined. It must be greater than the diameter of the O-ring seal 4. For example, the diameter of thewafer 10 is within 40-80 mm. - The
wafer 10 is placed on the O-ring seal 4, with surface S11 facing the cavity C. Air is then pumped out from cavity C throughconduct 5 andvalve 6 is turned off. Vacuum is thus created in cavity C and ambient pressure outside chuck 1 maintains thewafer 10 firmly held on the chuck (FIG. 2 ). A pressure difference of 80 kPa (kilopascal) between outside and inside of the chuck 1 appears to provide strong enough holding. - A
semifinished lens 20 has a front convex surface S20. Lens 20 may be an ophthalmic lens, in a preferred implementation of the invention. It may be 71 mm in diameter, for example. - Lens surface S20 may be initially covered with a surface
protective tape 40. Such protective tape is well known in the art and protects the lens surface from being scratched or stained during lens handling and machining. It makes it possible holding the lens via adhesion to the tape itself, and it can be easily removed from the lens after the lens machining has been completed.Tape 40 is applied on lens surface S20 in a usual manner, for example by implementing a vacuum-based application process. - The
lens 20 is then provided on surface S20 with afilm 30 comprising a layer of pressure sensitive adhesive, or PSA. Any known pressure sensitive adhesive can be used, which provides an adhesion force which is strong enough.Film 30 can be a single PSA layer, for example 0.025 mm thick, or a laminate which is PSA-double sided.Film 30 is applied on the lens surface S20 using any known process which provides uniform coverage without film tearing or wrinkle. For example, processes that combine film preforming, film transfer from a carrier onto the lens, and suitable heating may be used. When a surfaceprotective tape 40 is used,PSA film 30 adheres to that tape. Same application process as used fortape 40 may be used again for applying thePSA film 30 onto the lens surface S20. - According to an advantageous implementation of the invention, a laminate may be supplied which incorporates the surface
protective tape 40 and thefilm 30 of pressure sensitive adhesive. Then, a single application step provides thelens 20 with both thetape 40 and thePSA film 30. - Then the lens surface S20 is pressed against the surface S11 of the
wafer 10, this latter being vacuum-fixed on the chuck 1 (FIG. 3 ). It is pressed with a force of about 50 N (Newton) for example, so that thePSA film 30 sticks to the wafer surface S10. Waiting time of about 1 mn (minute) may be implemented so as to ensure a tight bonding oflens 20 towafer 10. Thelens 20 is now firmly held onto the holder 100 (FIG. 4 ). -
Lens 20 can now be machined accurately, because it does not move relative toholder 100. For illustrative purpose, the rear surface S21 of thelens 20 is generated, thereby providing a vergence to the lens which may correspond to the ametropy of a spectacle carrier. For example, the rear surface S21 oflens 20 is machined corresponding to a final base value of 6.0 and a toric curve of 7.0. - When a
rigid support 8 is used in cavity C, the rear surface S11 of the flexiblecurved wafer 10 is in contact with thesupport 8. Thensupport 8 can sustain at least part of the forces which are produced onlens 20 during machining. Therefore, any deformation of the lens is avoided, even when the lens thickness is small in the middle part of the lens. Therefore, the invention can be implemented for negative lenses as well, although negative lenses are thinner in their middle part compared to their peripheral part. - Recovering of the lens is now described.
- In a first step, vacuum is suppressed in cavity C, by operating
valve 6 so that air enters into the cavity (FIG. 5 ).Lens 20 is released from the chuck 1, withwafer 10 stuck on the lens surface S20 (FIG. 6 ). - In a second step, the
wafer 10 is removed from the lens surface S20. Due to flexibility ofwafer 10, it can be peeled easily, even by hands (FIG. 7 ). Depending on the pressure sensitive adhesive used for thefilm 30,wafer 10 can be alternatively removed by irradiating or heating so that adhesion to thelens 20 or to thetape 40 is suppressed. - The inventors point out that the process just described has numerous advantages. Among these advantages, they cite the following ones:
- the process is time saving: lens holding and lens recovering steps each correspond to duration of few minutes. This is much shorter than implementing wax- or alloy-based holding, which requires more than 20 minutes either for lens holding and for lens releasing;
- thanks to the use of the
resilient wafer 10 and the pressure sensitiveadhesive film 30, the holding process of the invention can be implemented with alens 20 having a progressive front surface S20; - the
lens 20 with thewafer 10 stuck thereon can pass several machining steps on various machining equipments with one and same wafer, without removal of this latter from the lens. This further contributes in time-saving in the whole lens manufacturing process; and - because the material of the
wafer 10 can be the same as that of thelens 20, it can be edged together with the lens in the holding assembly, so that lens diameter crib is no longer an issue. - Table 1 hereafter gathers process parameters for four lenses machined by holding these lenses on machining equipment holders according to the present invention. The optical qualities of the final lenses are observed using Humphery and B&L lensometer according to US Z80.1 standard. All lenses that are referred to in the table have a front surface curvature corresponding to base value of 3.25 and have been machined for generating lens back surfaces corresponding to target base value of 5.00. The target optical power and cylinder values were −2.00 and 0.00 respectively. The lenses are 76 mm in diameter and the rear surface machining diameter is 71 mm. The fining and polishing times were respectively 2 and 6 mn. The comparative example (noted comp.) corresponds to lens holding onto the holders using vacuum without wafer and using alloy.
-
TABLE 1 Wafer with a rigid Lens Actual Actual Lens support back surface optical optical Lensometer center Lens Example curve actual curve power cylinder inspection thickness deformation 1 Base 3.0 4.96 −1.93 0.02 good 1.86 mm no 2 Base 3.0 4.93 −1.89 0.10 good 1.51 mm no Comparative No wafer 4.30 −0.55 0.03 not good 1.3 mm yes Example 1 used Comparative Alloy 4.90 −1.90 0.01 good 1.1 mm no Example 2. Blocking- - Table 1 shows that for minus lens, the lens thickness appears as a predominant parameter for assessing whether using a rigid support within the cavity of the vacuum chuck is necessary or not.
- In the frame of the present invention, a “minus” lens is a lens which is thinner at the center and thicker at the edges, where a “plus” lens is a lens which is thicker in the center and thinner at the edges.
- Table 2 shows another example of using wafer with vacuum chuck for plus lens compared to the example without wafer. All lenses that are referred to in the table have a front surface curvature corresponding to base value of 5.50 and have been machined for generating lens back surfaces corresponding to target base value of 3.60. The target optical power and cylinder values were +2.00 and 0.00 respectively. The lenses are 76 mm in diameter and the rear surface machining diameter is 71 mm.
-
TABLE 2 Wafer Lens back Lens Target Actual Actual with surface back surface optical optical optical Example vacuum chuck target curve actual curve power power cylinder 3 Base 4.5 3.60 3.63 +2.00 +2.03 0.03 Comp. 3 No wafer 3.60 3.35 +2.00 +2.37 0.01 - In example 3 of table 2, there is no rigid support used in wafer with vacuum chuck for plus lens, since the lens is usually quite thick (e.g.>2.5 mm). However, without using wafer for the same vacuum and lens, the obtained lens will be out of the target optical power and the target curve.
- It is obvious that variations may be introduced in the implementations of the invention that have been described in detail above, while retaining at least some of the advantages of the invention. In particular, shape and size of the vacuum chuck may be varied, as well as some of the materials used and the system for fixing the vacuum chuck to the holder of the machining equipment.
Claims (15)
1. A process for holding an optical article having a convex surface on a holder of a lens machining equipment, the holder being equipped with a suction chuck, the chuck comprising a cavity with a side wall and sealing means on a front end of the side wall, comprising the following steps:
/a/ providing a flexible curved wafer with a concave surface arranged to close the cavity at the front end of the side wall;
/b/ a fixing step in which the wafer is fixed onto the holder by providing vacuum between the concave surface of the wafer and the suction chuck; and
/c/ a pressing step in which the concave surface of the optical article is pressed onto the concave surface of the wafer, an adhesive material being arranged between the wafer and the optical article.
2. The process according to claim 1 , wherein the flexible curved wafer is made of a thermoplastic material.
3. The process according to claim 1 , wherein the flexible curved wafer has a thickness comprised between 0.3 and 3 mm.
4. The process according to claim 1 , wherein the concave surface of the flexible curved wafer is spherical.
5. The process according to claim 1 , wherein the sealing means is selected in the list consisting of: a O-ring seal, a V-ring seal, a silicone ring.
6. The process according to claim 1 , wherein the adhesive material is selected in the list consisting of: a pressure sensitive adhesive, a hot melt adhesive, an instant curable adhesive, a UV curable adhesive, a thermal curable adhesive.
7. The process according to claim 1 , wherein the lens machining equipment is selected from a list comprising a lens surface generating machine, a lens polishing or fining machine, and an edging machine.
8. The process according to claim 1 , wherein the optical article is a semi-finished optical lens.
9. The process according to claim 1 , wherein the convex surface of the optical article is initially covered with a surface protective tape, and wherein the adhesive means adhere to the surface protective tape in step /c/.
10. The process according to claim 1 , wherein the suction chuck further comprises a rigid support arranged within the cavity, so that a rear surface of the flexible curved wafer is in contact with said rigid support on a side opposite to the wafer concave surface, once the wafer has been fixed to the holder in step /b/.
11. A process for machining an optical article having a convex surface, comprising the following steps:
/1/ holding the optical article on a holder of a lens machining equipment, using a holding process according to claim 1 ;
/2/ machining the optical article;
/3/ removing the optical article together with the flexible curved wafer from the holder by removing the vacuum in the cavity of the suction chuck; and
/4/ removing the flexible curved wafer from the optical article.
12. The process according to claim 11 , wherein the flexible curved wafer is removed from the optical article in step /4/ by peeling said wafer off.
13. The process according to claim 11 , wherein the flexible curved wafer is removed from the optical article in step /4/ by irradiating or heating the film of pressure sensitive adhesive so that adhesion to the optical article is suppressed.
14. A lens machining equipment comprising a holder being equipped with a suction chuck, the chuck comprising a cavity with a side wall and sealing means on a front end of the side wall.
15. The lens machining equipment according to claim 14 , wherein the suction chuck further comprises a rigid support arranged within the cavity, so that a rear surface of a flexible curved wafer with a concave surface is in contact with the rigid support on a side opposite to concave surface of the wafer, once the wafer has been fixed to the holder.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/507,941 US20080051017A1 (en) | 2006-08-22 | 2006-08-22 | Process for holding an optical lens on a holder of a lens machining equipment |
PCT/EP2007/058592 WO2008022978A1 (en) | 2006-08-22 | 2007-08-17 | Process for holding an optical lens on a holder of a lens machining equipment |
EP07802696A EP2059367B1 (en) | 2006-08-22 | 2007-08-17 | Process for holding an optical lens on a holder of a lens machining equipment |
AT07802696T ATE551151T1 (en) | 2006-08-22 | 2007-08-17 | METHOD FOR HOLDING AN OPTICAL LENS ON A HOLDER OF A LENS PROCESSING DEVICE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/507,941 US20080051017A1 (en) | 2006-08-22 | 2006-08-22 | Process for holding an optical lens on a holder of a lens machining equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080051017A1 true US20080051017A1 (en) | 2008-02-28 |
Family
ID=38671410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/507,941 Abandoned US20080051017A1 (en) | 2006-08-22 | 2006-08-22 | Process for holding an optical lens on a holder of a lens machining equipment |
Country Status (4)
Country | Link |
---|---|
US (1) | US20080051017A1 (en) |
EP (1) | EP2059367B1 (en) |
AT (1) | ATE551151T1 (en) |
WO (1) | WO2008022978A1 (en) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090320262A1 (en) * | 2006-07-06 | 2009-12-31 | Rafer & Project, S.L. | Method For Uncoupling The Support And Removing The Protective Film From Lenses During Production |
US20110073776A1 (en) * | 2009-09-30 | 2011-03-31 | Kyocera Corporation | Attraction member, and attraction device and charged particle beam apparatus using the same |
US20130206328A1 (en) * | 2010-10-21 | 2013-08-15 | Essilor International (Compagnie Generale D'optique) | Process for applying a film structure onto a lens blank |
US20140013560A1 (en) * | 2012-07-12 | 2014-01-16 | Hon Hai Precision Industry Co., Ltd. | Lens module assembling device |
CN103543534A (en) * | 2012-07-17 | 2014-01-29 | 鸿富锦精密工业(深圳)有限公司 | Assembly platform, assembly device and assembly method of camera lens module |
US20140137383A1 (en) * | 2012-11-21 | 2014-05-22 | Schneider Gmbh & Co. Kg | Device and Method for Blocking a Lens |
US20140329442A1 (en) * | 2013-05-06 | 2014-11-06 | Satisloh Ag | Multimaterial Block Piece |
US20150306722A1 (en) * | 2012-12-13 | 2015-10-29 | Essilor International (Compagnie General D'optique | Method For Blocking An Optical Lens Component |
US20160074985A1 (en) * | 2013-04-29 | 2016-03-17 | Essilor International (Compagnie Generale D'optique) | Blocking calculation module |
CN107179593A (en) * | 2017-07-19 | 2017-09-19 | 舜宇光学(中山)有限公司 | A kind of eyeglass automatic core fixing method |
CN109375331A (en) * | 2018-11-21 | 2019-02-22 | 中国科学院上海技术物理研究所 | A kind of vertical solidification equipment of multi lens array optical axis |
CN111390739A (en) * | 2020-03-31 | 2020-07-10 | 东莞泰升玻璃有限公司 | Double-side polishing device for curved glass |
CN112805144A (en) * | 2018-10-09 | 2021-05-14 | 依视路国际公司 | Laminator with improved stopper support and method |
CN112959171A (en) * | 2021-02-01 | 2021-06-15 | 董江磊 | High-precision optical lens processing technology |
CN113400220A (en) * | 2021-08-20 | 2021-09-17 | 江苏圣锦硅业新材料有限公司 | Optical glass processing fixing device |
EP4035832A1 (en) * | 2021-01-28 | 2022-08-03 | Carl Zeiss Vision International GmbH | Blocking piece and method for vacuum blocking a lens blank |
US11623317B2 (en) * | 2017-02-07 | 2023-04-11 | Essilor International | Set including a semi-finished optical element and a blocking device; and a method for providing such a set |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107309743B (en) * | 2016-12-30 | 2019-02-15 | 南阳英锐光电科技股份有限公司 | A kind of optical mirror slip fixer for machining |
CN108942514B (en) * | 2018-08-15 | 2020-08-18 | 江西鸿锦光电有限公司 | Automatic milling and grinding machine for optical lens and automatic milling and grinding method thereof |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3994101A (en) * | 1973-01-03 | 1976-11-30 | Coburn Optical Industries, Inc. | Vacuum chuck with sealable cavity |
US4138304A (en) * | 1977-11-03 | 1979-02-06 | General Electric Company | Wafer sawing technique |
US4603867A (en) * | 1984-04-02 | 1986-08-05 | Motorola, Inc. | Spinner chuck |
US5753301A (en) * | 1995-06-08 | 1998-05-19 | Essilor Of America, Inc. | Method for spin coating a multifocal lens |
US20020132571A1 (en) * | 2001-03-19 | 2002-09-19 | Fujitsu Limited | Method of manufacturing magnetic head |
US20030211813A1 (en) * | 2002-04-09 | 2003-11-13 | Strasbaugh, Inc., A California Corporation | Protection of work piece during surface processing |
US20040058625A1 (en) * | 1998-05-21 | 2004-03-25 | Baruch Ben-Menachem | Precision double-sided aspheric element |
US20040087254A1 (en) * | 1995-06-09 | 2004-05-06 | Norman Shendon | Fluid-pressure regulated wafer polishing head |
US6837776B2 (en) * | 2001-10-18 | 2005-01-04 | Fujitsu Limited | Flat-object holder and method of using the same |
US20050221722A1 (en) * | 2004-03-31 | 2005-10-06 | Cheong Yew W | Wafer grinding using an adhesive gel material |
US20070131351A1 (en) * | 2004-02-20 | 2007-06-14 | Jun Kawakubo | Device and method for blocking optical lens |
US20070232209A1 (en) * | 2000-11-23 | 2007-10-04 | Samsung Electronics Co., Ltd. | Method for polishing a semiconductor wafer |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3794314A (en) * | 1972-01-13 | 1974-02-26 | Coburn Optical Ind | Vacuum chuck for ophthalmic lens finishing machinery |
EP0169932B1 (en) * | 1984-08-03 | 1987-04-22 | Wilhelm Loh Wetzlar Optikmaschinen GmbH & Co. KG | Supporting device for vulnerable objects, in particular optical lenses and other optical elements |
US5357716A (en) * | 1988-10-20 | 1994-10-25 | Olympus Optical Company Limited | Holding device for holding optical element to be ground |
-
2006
- 2006-08-22 US US11/507,941 patent/US20080051017A1/en not_active Abandoned
-
2007
- 2007-08-17 EP EP07802696A patent/EP2059367B1/en active Active
- 2007-08-17 AT AT07802696T patent/ATE551151T1/en active
- 2007-08-17 WO PCT/EP2007/058592 patent/WO2008022978A1/en active Application Filing
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3994101A (en) * | 1973-01-03 | 1976-11-30 | Coburn Optical Industries, Inc. | Vacuum chuck with sealable cavity |
US4138304A (en) * | 1977-11-03 | 1979-02-06 | General Electric Company | Wafer sawing technique |
US4603867A (en) * | 1984-04-02 | 1986-08-05 | Motorola, Inc. | Spinner chuck |
US5753301A (en) * | 1995-06-08 | 1998-05-19 | Essilor Of America, Inc. | Method for spin coating a multifocal lens |
US20040087254A1 (en) * | 1995-06-09 | 2004-05-06 | Norman Shendon | Fluid-pressure regulated wafer polishing head |
US20040058625A1 (en) * | 1998-05-21 | 2004-03-25 | Baruch Ben-Menachem | Precision double-sided aspheric element |
US20070232209A1 (en) * | 2000-11-23 | 2007-10-04 | Samsung Electronics Co., Ltd. | Method for polishing a semiconductor wafer |
US20020132571A1 (en) * | 2001-03-19 | 2002-09-19 | Fujitsu Limited | Method of manufacturing magnetic head |
US6837776B2 (en) * | 2001-10-18 | 2005-01-04 | Fujitsu Limited | Flat-object holder and method of using the same |
US20050085171A1 (en) * | 2001-10-18 | 2005-04-21 | Yuzo Shimobeppu | Flat-object holder and method of using the same |
US20030211813A1 (en) * | 2002-04-09 | 2003-11-13 | Strasbaugh, Inc., A California Corporation | Protection of work piece during surface processing |
US20070131351A1 (en) * | 2004-02-20 | 2007-06-14 | Jun Kawakubo | Device and method for blocking optical lens |
US20050221722A1 (en) * | 2004-03-31 | 2005-10-06 | Cheong Yew W | Wafer grinding using an adhesive gel material |
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8141220B2 (en) * | 2006-07-06 | 2012-03-27 | Insomec Integra Soluciones, S.L.L. | Method for uncoupling the support and removing the protective film from lenses during production |
US20090320262A1 (en) * | 2006-07-06 | 2009-12-31 | Rafer & Project, S.L. | Method For Uncoupling The Support And Removing The Protective Film From Lenses During Production |
US8698099B2 (en) * | 2009-09-30 | 2014-04-15 | Kyocera Corporation | Attraction member, and attraction device and charged particle beam apparatus using the same |
US20110073776A1 (en) * | 2009-09-30 | 2011-03-31 | Kyocera Corporation | Attraction member, and attraction device and charged particle beam apparatus using the same |
US20130206328A1 (en) * | 2010-10-21 | 2013-08-15 | Essilor International (Compagnie Generale D'optique) | Process for applying a film structure onto a lens blank |
US9778485B2 (en) * | 2010-10-21 | 2017-10-03 | Essilor International (Compagnie Generale D'optique) | Process for applying a film structure onto a lens blank |
US20140013560A1 (en) * | 2012-07-12 | 2014-01-16 | Hon Hai Precision Industry Co., Ltd. | Lens module assembling device |
US9168620B2 (en) * | 2012-07-12 | 2015-10-27 | Hon Hai Precision Industry Co., Ltd. | Lens module assembling device |
CN103543534A (en) * | 2012-07-17 | 2014-01-29 | 鸿富锦精密工业(深圳)有限公司 | Assembly platform, assembly device and assembly method of camera lens module |
US20140137383A1 (en) * | 2012-11-21 | 2014-05-22 | Schneider Gmbh & Co. Kg | Device and Method for Blocking a Lens |
US9168628B2 (en) * | 2012-11-21 | 2015-10-27 | Schneider GmbH & Co, KG | Device for blocking a lens |
US9889535B2 (en) * | 2012-12-13 | 2018-02-13 | Essilor International (Compagnie Generale D'optique) | Method for blocking an optical lens component |
US20150306722A1 (en) * | 2012-12-13 | 2015-10-29 | Essilor International (Compagnie General D'optique | Method For Blocking An Optical Lens Component |
US20160074985A1 (en) * | 2013-04-29 | 2016-03-17 | Essilor International (Compagnie Generale D'optique) | Blocking calculation module |
US10543578B2 (en) * | 2013-04-29 | 2020-01-28 | Essilor International | Blocking calculation module |
US20140329442A1 (en) * | 2013-05-06 | 2014-11-06 | Satisloh Ag | Multimaterial Block Piece |
US11623317B2 (en) * | 2017-02-07 | 2023-04-11 | Essilor International | Set including a semi-finished optical element and a blocking device; and a method for providing such a set |
CN107179593A (en) * | 2017-07-19 | 2017-09-19 | 舜宇光学(中山)有限公司 | A kind of eyeglass automatic core fixing method |
CN112805144A (en) * | 2018-10-09 | 2021-05-14 | 依视路国际公司 | Laminator with improved stopper support and method |
CN109375331A (en) * | 2018-11-21 | 2019-02-22 | 中国科学院上海技术物理研究所 | A kind of vertical solidification equipment of multi lens array optical axis |
CN111390739A (en) * | 2020-03-31 | 2020-07-10 | 东莞泰升玻璃有限公司 | Double-side polishing device for curved glass |
WO2022162100A1 (en) | 2021-01-28 | 2022-08-04 | Carl Zeiss Vision International Gmbh | Blocking piece and method for vacuum blocking a lens blank |
EP4035832A1 (en) * | 2021-01-28 | 2022-08-03 | Carl Zeiss Vision International GmbH | Blocking piece and method for vacuum blocking a lens blank |
KR20230027314A (en) * | 2021-01-28 | 2023-02-27 | 칼 자이스 비전 인터내셔널 게엠베하 | Blocking component and method for vacuum blocking lens blanks |
KR102640075B1 (en) * | 2021-01-28 | 2024-02-27 | 칼 자이스 비전 인터내셔널 게엠베하 | Blocking parts and methods for vacuum blocking lens blanks |
CN112959171A (en) * | 2021-02-01 | 2021-06-15 | 董江磊 | High-precision optical lens processing technology |
CN113400220A (en) * | 2021-08-20 | 2021-09-17 | 江苏圣锦硅业新材料有限公司 | Optical glass processing fixing device |
Also Published As
Publication number | Publication date |
---|---|
WO2008022978A1 (en) | 2008-02-28 |
ATE551151T1 (en) | 2012-04-15 |
EP2059367A1 (en) | 2009-05-20 |
EP2059367B1 (en) | 2012-03-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2059367B1 (en) | Process for holding an optical lens on a holder of a lens machining equipment | |
JP4842375B2 (en) | Method for affixing a layered structure on a lens | |
CN101155679B (en) | Method for functionalizing an optical lens by means of apparatus for conforming a planar film on an optical lens | |
KR101387095B1 (en) | Method of Bonding a Film to a Curved Substrate | |
JP5552235B2 (en) | Polarizing optical element with polarizing film and method for producing such an element | |
US9381604B2 (en) | Preformed block piece with three points of support | |
US20060192307A1 (en) | Method for producing high quality optical parts by casting | |
US20150115486A1 (en) | Method of making a spectacle lens | |
US6942746B2 (en) | Lens blocking system | |
US20150217420A1 (en) | Lens retaining device for retaining a raw lens in a processing machine, and method for processing raw lenses | |
EP1803531B1 (en) | Method for processing lens using pressure-sensitive adhesive tape | |
US4925518A (en) | Compliant lens blocks and method of using them | |
WO2013083977A1 (en) | 3d prescription spectacle lens and method of manufacture | |
CN108622456B (en) | Method and device for sticking protective film to camera component | |
JP2002192447A (en) | Recessed tray handling jig | |
JP4695798B2 (en) | Separation method for ophthalmic lens and separation apparatus used therefor | |
JP5233139B2 (en) | Lens manufacturing method | |
US20030137634A1 (en) | Method and kit for making ophthalmic lenses | |
CN111152096A (en) | Method for quickly loading small-caliber lens onto disc | |
GB2230983A (en) | Lens blank mountings | |
EP3636422A1 (en) | Lamination machine and method with an improved blocker support | |
JP2011098466A (en) | Method for separating ophthalmic lens from molding die, and jig for separation and separating device used therefor | |
MX2008010640A (en) | Polarizing optical element comprising a polarizing film and method for making same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQU Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:JIANG, PEIQI;GLACET, ARNAUD;PEACKOK, GEVAN;REEL/FRAME:018761/0395 Effective date: 20061206 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |