US20110124272A1 - Lens Blocking and Deblocking Method and Related Device - Google Patents

Lens Blocking and Deblocking Method and Related Device Download PDF

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Publication number
US20110124272A1
US20110124272A1 US13/054,622 US200913054622A US2011124272A1 US 20110124272 A1 US20110124272 A1 US 20110124272A1 US 200913054622 A US200913054622 A US 200913054622A US 2011124272 A1 US2011124272 A1 US 2011124272A1
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US
United States
Prior art keywords
layer
optical lens
adhesive tape
holding unit
thermoplastic material
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
Application number
US13/054,622
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English (en)
Inventor
Yohann Felten
Matthieu Le Gall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EssilorLuxottica SA
Original Assignee
Essilor International Compagnie Generale dOptique SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Essilor International Compagnie Generale dOptique SA filed Critical Essilor International Compagnie Generale dOptique SA
Publication of US20110124272A1 publication Critical patent/US20110124272A1/en
Assigned to ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE) reassignment ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE) ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LE GALL, MATTHIEU, FELTEN, YOHANN
Abandoned legal-status Critical Current

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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
    • B24B13/0057—Deblocking of lenses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49998—Work holding

Definitions

  • This invention relates to a lens blocking and deblocking method and device for use in adhering an optical lens to a lens blocking device employed with machining, grinding and processing equipment in the generation of optical, namely ophthalmic, lenses.
  • the process of preparing optical or ophthalmic lenses begins usually with an unfinished or semi-finished glass or plastic lens blank.
  • a semi-finished lens blank has a finished polished front surface and an unfinished back surface.
  • the required corrective prescription is generated.
  • the surface having had the corrective prescription imparted thereto is polished and the peripheral edge of the thus processed lens blank is provided with a final desired contour thereby establishing a finished optical or ophthalmic lens.
  • the finished ophthalmic lens can be directly processed from a lens blank using for example three directional machining.
  • the lens blank can be either a plastic or a glass lens blank.
  • lens blocking It is necessary during these various processing operations to securely maintain the lens blank in accurate alignment and in place on the lens blocking device. This procedure is often referred to as “lens blocking”.
  • Cadmium poisoning is similar to lead in many ways and is introduced into the body in the same way as lead. Like lead, cadmium is stored in the liver, kidney and bone. Procedures for the formulation of such alloys and reclamation processes so as to enable its re-use as a material to secure a lens blank to a lens block thus exposes workers to serious environmental and health hazards.
  • the formation of these alloys often is accomplished through the use of powdered or particulate metals which are subjected to a sintering and heat treating process. Fumes and/or dust particles of these metals are released to the ambient atmosphere thereby creating environmental and health hazards for those formulating these alloys. The same hazards exist for those attempting to reclaim the used low temperature metal alloy blocking material.
  • organic low shrinkage materials have been developed to be used as lens blocking materials.
  • the disclosed blocking compositions have many advantages over traditional metal alloy materials.
  • the lens blocking compositions are non-toxic, environmentally safe, and preferably biodegradable.
  • the materials preferably can be used with existing processing equipment and may be recycled.
  • An optical lens blocking device can be used that comprises a solidified mass of a thermoplastic blocking composition.
  • the blocking composition is solid at 21° C. and has a low melting or softening point.
  • thermoplastic blocking composition separating the thermoplastic blocking composition from the lens blank is an issue.
  • This deblocking step comprises ordinarily a hammering step and a crack is generated at the interface between the thermoplastic blocking composition and the lens blank.
  • Said step needs an operator, is often made after separating the ophthalmic lens block from the machine, is time consuming and may introduce defects on the final lens.
  • one object of the present invention is to improve blocking and/or deblocking methods to enhance the quality of resulting lens.
  • This object is obtained according to one aspect of the invention directed to a method for blocking an optical lens on a heat conducting holding unit comprising a bottom part to be inserted and fixed in a lens machining tool and an upper part comprising an upper assembling surface comprising the steps of:
  • the third layer having an adhesive tape is arranged on the second layer having a layer comprising a thermoplastic material and the optical lens is arranged on the third layer when the thermoplastic material of the second layer is soften or melted.
  • optical lens blocking device comprising:
  • a heat conducting holding unit comprising a bottom part to be inserted and fixed in a lens machining tool and an upper part comprising an upper assembling surface
  • a second layer having a layer comprising a thermoplastic material stacked on the first layer
  • An optical lens can be placed on the third layer of said optical lens blocking device before or after placing the third layer on the second layer having a layer comprising a thermoplastic material.
  • lens blocking device of the invention which can be considered alone or in all possible combinations:
  • the upper assembling surface of the holding unit is a spherical surface
  • the melting or softening point of the thermoplastic material of the second layer is between 45° C. and 75° C.
  • the adhesive tapes have a pressure-sensitive adhesive surface arranged to contact a bottom surface of an optical lens or the upper assembling surface of the holding unit and a tack-free adhesion promoting surface arranged to contact the surfaces of the second layer;
  • the thickness of the second layer is between 0.5 mm and 2 mm, as for an example equal or less to 1 mm.
  • Another aspect of the invention relates to a method for deblocking an optical lens which bottom surface is secured on a previously mentioned optical lens blocking device or according to previously mentioned method for blocking, comprising the steps of:
  • the method further comprises one or two of following steps:
  • step a) of the deblocking method consists in heating only the bottom part of the holding unit.
  • Another aspect of the invention relates to a method of machining, such as for example grinding and/or polishing and/or edging and/or engraving, an optical lens comprising the steps of:
  • a “layer comprising a thermoplastic material” is a layer of material that can melt or soften when being heated.
  • a thermoplastic material can be remelted or softened when heated and remoulded when cooling after melting or softening.
  • Most thermoplastics are high molecular weight polymers whose chains associate through weak van der Waals forces (polyethylene); strong dipole-dipole interactions and hydrogen bonding (nylon); or even stacking of aromatic rings (polystyrene).
  • Many thermoplastic materials are addition polymers; e.g., vinyl chain-growth polymers such as polyethylene and polypropylene.
  • the layer comprising a thermoplastic material may also comprise additives (such as, for example, plasticizers, stabilizers, pigments, . .
  • fillers such as mineral and/or organic fillers, as for examples boron, carbon, clay, glass, cellulose, metals, oxides, aramide, polyamide, . . . ; fillers may be of different geometry, such as for example grains, lamella, short or long fibers, . . . ).
  • an “optical lens” may be a lens which surfaces have already been machined, a semi-finished lens blank with a polished front surface, a lens blank with two unfinished surfaces.
  • the optical lens can be made for example, but not limited to, of plastic or glass. More generally, any combination of material suitable to obtain an optical system may be used. One or two surfaces of the optical lens may be coated.
  • an “optical lens” of the invention can be every optical part that needs to be machined, as for example to be cut and/or grinded and/or polished and/or edged and/or engraved, in order to provide a machined optical lens.
  • a fully machined optical lens according to the present invention is for example an ophthalmic lens which surfaces form an optical system that fits a desired prescription.
  • Said machined optical lens can be edged when blocked according to the present invention or edged in a further processing step, as for an example edged by an eye care practitioner.
  • a “heat conducting holding unit” is a holding unit that can be inserted in the chuck or fixing part of a holding tool. Said holding tool may be part of a lathe or other movement inducing machine.
  • the holding unit of the invention is heat conducting and can be a metallic part or any material suitable to let the heat propagate through said material. According to an embodiment of the present invention, the holding unit is made of aluminium alloy.
  • selected fixing means are provided to fix an optical lens on a holding unit.
  • Said fixing means include three stacked layers, where the first layer has an adhesive tape, the second layer has a layer comprising a thermoplastic material and the third layer has an adhesive tape.
  • the selected stacked layers afford a simple and efficient blocking device and/or method and afford easy deblocking, namely when heating the holding unit so as to soften or melt the thermoplastic material of the second layer.
  • the optical lens can thus be blocked and/or deblocked without damage and the inventors have noticed that ophthalmic lenses manufactured using the blocking and/or deblocking method according to the present invention have undamaged and quality reliable optical surfaces.
  • the quantity of material of the second layer may be limited and said material may be reused after deblocking the machined optical lens.
  • the layer comprising a thermoplastic material may be prepared as an independent layer arranged on the first layer consisting of an adhesive tape and shaped on said tape by soft heating or be poured from a warm device onto the upper surface of the first layer consisting of an adhesive tape.
  • FIG. 1 is a cross sectional view of an optical lens fixed on an optical lens blocking device according to an embodiment of the present invention.
  • FIGS. 2 to 6 show successive steps of a deblocking method according to the present invention.
  • the wording “upper” or “on” and “bottom” or “under” indicates positions relative to the optical lens when it is arranged so as the edge of the optical lens to be machined is substantially situated in a horizontal plane.
  • Said position is purely conventional and the optical lens can be machined in a non horizontal position.
  • an optical lens 100 is secured on a holding unit 200 thanks to fixing means 300 .
  • the edge of said optical lens 100 is substantially situated in a horizontal plane.
  • the upper surface 110 of the optical lens 100 is a surface to be machined, as for an example to be grinded and/or polished.
  • the optical lens 100 can be further edged.
  • the bottom surface 120 of the optical lens 100 contacts the upper surface of the fixing means 300 .
  • the optical lens 100 is a semi-finished lens blank and the bottom surface 120 is a finished optical surface.
  • the external diameter of the optical lens 100 is between 50 mm and 100 mm, for example equal to 80 mm.
  • the holding unit 200 is a metallic part which comprises a bottom part 230 , 220 and an upper part 250 .
  • the lower part 230 of bottom part comprises means to orientate the holding unit in corresponding orientating means of a tool (not represented) of a lens machining unit such as a lathe or another movement inducing machine.
  • Said tool may be a chuck or another fixing tool.
  • Internal surface 240 of the holding unit may contact an upper surface of said tool.
  • the bottom part of the holding unit also comprises a central part 220 which is a cylindrical part to be squeezed by said fixing tool of the machining unit.
  • Upper part 250 has an external diameter larger than the diameter of the central part 220 and its bottom surface 255 may lay on the upper surface of the tool of the lens machining unit and may comprise positioning means.
  • the upper part 250 also comprises an upper assembling surface 210 .
  • the diameter of the upper part 250 is 70 mm
  • the diameter of the central part 220 is 43 mm
  • the height of the holding unit 200 is between 20 and 30 mm.
  • Fixing means 300 are arranged between the upper assembling surface 210 and the bottom surface 120 of the optical lens and consists of three stacked layers where:
  • the thermoplastic material of the second layer 310 melts or softens at a low temperature, less than the temperature at which the material(s) of the lens component may degrades or flows.
  • the melting or softening point of the thermoplastic material is between 45° C. and 75° C.
  • Suitable thermoplastic material may be selected from the group consisting of polyesters, polyurethanes, ionomer resins of ethylene copolymers, polyester-polysiloxane block copolymers, segmented copolyesters and polyetheresters, ethylene vinyl acetate resins and copolymers, waxes, polycaprolactones, and blends thereof.
  • thermoplastic material may comprise a homopolymer or copolymer of epsilon-caprolactone.
  • thermoplastic materials are given in previously cited patent U.S. Pat. No. 6,036,313 and are suitable for the present invention.
  • the adhesive tapes 320 , 330 have a pressure-sensitive adhesive surface and a tack-free adhesion promoting surface.
  • the tapes 320 , 330 assist in the firm bonding of the optical lens 100 to the thermoplastic material layer 310 and to the holding unit assembling surface 210 .
  • the tapes are conformable, that is, they follow the curvature of the lens blanks without any wrinkles or air bubbles; and translucent, that is, they permit light to pass there through.
  • the lens may be visually aligned in the appropriate device prior to blocking.
  • the tapes when removed from the lens, they leave virtually no adhesive residue. Thus, messy and time consuming cleaning operations need not be performed on the lens before it can be used.
  • suitable tapes may exhibit excellent adhesion to the optical lens, to the thermoplastic material and to the holding unit. Additionally, the tapes may be able to withstand the shear forces encountered during the machining operations. As a result, lenses are held in accurate position throughout these operations.
  • An added benefit offered by using an adhesive tape is the protection provided to the optical lenses from thermal and mechanical shock.
  • composition of the exposed surface of the tape i.e., the non-adhesive surface away from the optical lens or from the upper assembling surface of the holding unit
  • the composition of the exposed surface of the tape may be selected so as to achieve the desired degree of adhesion with a particular thermoplastic material.
  • tapes commercialized by the company 3M and referred as 1640 and 1641 are particularly suitable.
  • a 1641 adhesive tape commercialized by the company 3M comprises a baking made of polyethylene film covered by an acrylate adhesive.
  • the upper surface 312 of the thermoplastic material layer 310 is heated, for example with UV or IR lamps, so as to let a zone of the thermoplastic material layer melt or soften.
  • the optical lens 100 is then placed onto the adhesive tape 320 arranged on the partly molten or soften thermoplastic material layer and moderate pressure is applied onto the lens component.
  • the optical lens is securely blocked after the cooling of the thermoplastic material and the optical lens is machined using conventional tools to provide grinding and/or polishing and/or edging.
  • the thermoplastic material is previously heated and then poured on the upper surface 332 of the adhesive tape 330 , the adhesive tape 320 is arranged on the upper surface 312 of the thermoplastic material layer 310 and moderate pressure is applied on the optical lens 100 arranged on said layer 310 when the thermoplastic material is still at least partly melted or softened.
  • the adhesive tape 320 is previously arranged on the bottom surface 120 of the optical lens 100 and moderate pressure is applied on the optical lens 100 with said adhesive tape 320 when the thermoplastic material of layer 310 is at least partly melted or softened. Melting or softening said thermoplastic material can be achieved by heating it, for example with UV or IR lamps, or by pouring it when warm on the upper surface 332 of the adhesive tape 330 .
  • the machined optical lens is deblocked and detached from the holding unit 200 .
  • Heating means 400 on FIG. 2 Heating means can be for example IR or UV lamps, as well as hot liquids, be provided by contacting a heated metal part or by other conductive heating means.
  • only the bottom part of the holding unit 200 is directly heated by the heating means and the heat propagates then through the holding unit to the upper part 250 thanks to heat conduction.
  • Heating the holding unit 200 makes possible to deblock the optical lens without significant heating of the optical lens.
  • thermoplastic material layer 310 After heating the bottom surface 314 of the thermoplastic material layer 310 thanks to conductive heating through the holding unit 200 , a zone of thermoplastic material close to said surface 314 melts or softens and the separation of the thermoplastic material layer 310 from the adhesive tape 330 is very easy when pulling according to arrow 510 as shown on FIG. 3 .
  • the holding unit 200 and the first layer consisting of the adhesive tape 330 remain together.
  • the optical lens 100 , the third layer consisting of the adhesive tape 320 and the thermoplastic material layer 310 remain together.
  • the third layer consisting of the adhesive tape 320 is peeled or pulled according to arrow 520 and the third layer and the thermoplastic material layer remain together after being separated from the optical lens 100 .
  • the third layer consisting of the adhesive tape 320 can then be easily removed from the upper surface 312 of the thermoplastic material layer 310 when said layer is pulled according to arrow 530 as shown on FIG. 5 .
  • the thermoplastic material can be rapidly reused to prepare another lens blocking device.
  • the first layer consisting of the adhesive tape 330 can be easily removed from the upper assembling surface 210 of the holding unit 200 by peeling or pulling said adhesive tape 330 according to arrow 540 as shown on FIG. 6 .
  • the holding unit can be rapidly reused to prepare another lens blocking device.
  • thermoplastic material as well as the holding unit are not contaminated during the blocking/machining/deblocking steps and are immediately reusable.
  • the present invention provides a method for blocking and/or deblocking all kinds of optical lenses, particularly ophthalmic lenses, e.g. single vision (spherical, torical), bi-focal, progressive, aspherical lenses (etc..), semi-finished optical lenses and/or blanks, blanks for manufacturing optical lenses.
  • ophthalmic lenses e.g. single vision (spherical, torical), bi-focal, progressive, aspherical lenses (etc..), semi-finished optical lenses and/or blanks, blanks for manufacturing optical lenses.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Eyeglasses (AREA)
US13/054,622 2008-07-17 2009-07-10 Lens Blocking and Deblocking Method and Related Device Abandoned US20110124272A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP08160603A EP2145730A1 (en) 2008-07-17 2008-07-17 Lens blocking and deblocking method and related device
EP08160603.0 2008-07-17
PCT/EP2009/058806 WO2010006995A1 (en) 2008-07-17 2009-07-10 Lens blocking and deblocking method and related device

Publications (1)

Publication Number Publication Date
US20110124272A1 true US20110124272A1 (en) 2011-05-26

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US13/054,622 Abandoned US20110124272A1 (en) 2008-07-17 2009-07-10 Lens Blocking and Deblocking Method and Related Device

Country Status (7)

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US (1) US20110124272A1 (pt)
EP (2) EP2145730A1 (pt)
CN (1) CN102123824B (pt)
BR (1) BRPI0916220A2 (pt)
PL (1) PL2321092T3 (pt)
PT (1) PT2321092E (pt)
WO (1) WO2010006995A1 (pt)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150105002A1 (en) * 2013-10-16 2015-04-16 Carl Zeiss Vision International Gmbh Tool for the polishing of optical surfaces
US20150306722A1 (en) * 2012-12-13 2015-10-29 Essilor International (Compagnie General D'optique Method For Blocking An Optical Lens Component
USD753748S1 (en) * 2014-08-11 2016-04-12 Schneider Gmbh Co. Kg Block piece for optical lenses
US20160101579A1 (en) * 2013-04-24 2016-04-14 Benz Research And Development Corporation Mandrel for holding an intraocular lens blank and method of making an intraocular lens using the same
US20170168317A1 (en) * 2015-12-14 2017-06-15 Optotech Optikmaschinen Gmbh Workpiece with optical lens blank, method for the production thereof, and method for the machining thereof
JP2020027142A (ja) * 2018-08-09 2020-02-20 東洋インキＳｃホールディングス株式会社 眼用レンズ材料、その製造方法、眼用レンズ材料形成用組成物、眼用レンズ及びコンタクトレンズ
CN112805144A (zh) * 2018-10-09 2021-05-14 依视路国际公司 具有改进的封阻器支撑件的层压机及方法
CN115008298A (zh) * 2022-06-30 2022-09-06 江西弘耀光学水晶有限公司 一种光学镜片智能打磨抛光磨边方法
US11819980B2 (en) 2019-12-12 2023-11-21 Benz Research And Development Corp. Mandrel for holding a lens blank and method of making a lens using the same

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US9745543B2 (en) 2012-09-10 2017-08-29 Ecolab Usa Inc. Stable liquid manual dishwashing compositions containing enzymes
MX2015008530A (es) * 2012-12-31 2015-09-10 Essilor Int Un metodo para determinar la posicion de bloqueo de una lente optica.
AU2014222673B2 (en) * 2013-03-01 2017-09-28 Essilor International Optical lens member comprising a sub-surface referencing element
DE102017001679B4 (de) * 2017-02-22 2019-05-09 Schneider Gmbh & Co. Kg Vorrichtung und Verfahren zum Abblocken einer Linse
HUE061034T2 (hu) * 2017-06-12 2023-05-28 Essilor Int Tartóeszköz félkész optikai elemhez
CN107498423B (zh) * 2017-08-22 2018-12-25 长光卫星技术有限公司 用于反射镜离子束抛光的降温装置

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US4328060A (en) * 1980-08-26 1982-05-04 Coburn Optical Industries, Inc. Ophthalmic lens deblocking - method and apparatus
US5474489A (en) * 1991-03-27 1995-12-12 D.A.C., Inc. Lens blocking and constant center thickness system
US6036313A (en) * 1995-09-18 2000-03-14 3M Innovative Properties Company Thermoplastic lens blocking material
US6074290A (en) * 1994-10-28 2000-06-13 Minnesota Mining And Manufacturing Company Compliant lens block and tape
US20050042977A1 (en) * 2003-01-27 2005-02-24 Seiko Epson Corporation Adhesive tape and edging method using same
US7985123B2 (en) * 2004-10-15 2011-07-26 Musashi Chemicals Industry Co., Ltd. Adhesive tape for fixing lens and method for processing lens using the same

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JP2001212742A (ja) * 1999-11-25 2001-08-07 Canon Inc 光学素子の加工時の保持方法及び、光学素子の固定方法、光学素子の保持工具、並びに光学素子の加工方法
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Publication number Priority date Publication date Assignee Title
US4328060A (en) * 1980-08-26 1982-05-04 Coburn Optical Industries, Inc. Ophthalmic lens deblocking - method and apparatus
US5474489A (en) * 1991-03-27 1995-12-12 D.A.C., Inc. Lens blocking and constant center thickness system
US6074290A (en) * 1994-10-28 2000-06-13 Minnesota Mining And Manufacturing Company Compliant lens block and tape
US6036313A (en) * 1995-09-18 2000-03-14 3M Innovative Properties Company Thermoplastic lens blocking material
US20050042977A1 (en) * 2003-01-27 2005-02-24 Seiko Epson Corporation Adhesive tape and edging method using same
US7985123B2 (en) * 2004-10-15 2011-07-26 Musashi Chemicals Industry Co., Ltd. Adhesive tape for fixing lens and method for processing lens using the same

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US20160101579A1 (en) * 2013-04-24 2016-04-14 Benz Research And Development Corporation Mandrel for holding an intraocular lens blank and method of making an intraocular lens using the same
US9919487B2 (en) * 2013-04-24 2018-03-20 Benz Research And Development Corporation Mandrel for holding an intraocular lens blank and method of making an intraocular lens using the same
US20150105002A1 (en) * 2013-10-16 2015-04-16 Carl Zeiss Vision International Gmbh Tool for the polishing of optical surfaces
US9409274B2 (en) * 2013-10-16 2016-08-09 Carl Zeiss Vision International Gmbh Tool for the polishing of optical surfaces
USD753748S1 (en) * 2014-08-11 2016-04-12 Schneider Gmbh Co. Kg Block piece for optical lenses
US20170168317A1 (en) * 2015-12-14 2017-06-15 Optotech Optikmaschinen Gmbh Workpiece with optical lens blank, method for the production thereof, and method for the machining thereof
US10061142B2 (en) * 2015-12-14 2018-08-28 Optotech Optikmaschinen Gmbh Workpiece with optical lens blank, method for the production thereof, and method for the machining thereof
JP2020027142A (ja) * 2018-08-09 2020-02-20 東洋インキＳｃホールディングス株式会社 眼用レンズ材料、その製造方法、眼用レンズ材料形成用組成物、眼用レンズ及びコンタクトレンズ
JP7243074B2 (ja) 2018-08-09 2023-03-22 東洋インキＳｃホールディングス株式会社 眼用レンズ材料、その製造方法、眼用レンズ材料形成用組成物、眼用レンズ及びコンタクトレンズ
CN112805144A (zh) * 2018-10-09 2021-05-14 依视路国际公司 具有改进的封阻器支撑件的层压机及方法
US11819980B2 (en) 2019-12-12 2023-11-21 Benz Research And Development Corp. Mandrel for holding a lens blank and method of making a lens using the same
US12103138B2 (en) 2019-12-12 2024-10-01 Benz Research And Development Corp. Mandrel for holding a lens blank and method of making a lens using the same
CN115008298A (zh) * 2022-06-30 2022-09-06 江西弘耀光学水晶有限公司 一种光学镜片智能打磨抛光磨边方法

Also Published As

Publication number Publication date
EP2321092B1 (en) 2012-10-03
WO2010006995A1 (en) 2010-01-21
CN102123824A (zh) 2011-07-13
PT2321092E (pt) 2013-01-16
EP2145730A1 (en) 2010-01-20
CN102123824B (zh) 2014-08-13
BRPI0916220A2 (pt) 2015-11-03
PL2321092T3 (pl) 2013-02-28
EP2321092A1 (en) 2011-05-18

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