SG72757A1 - Scanning laser demolding of ophthalmic lenses - Google Patents

Scanning laser demolding of ophthalmic lenses

Info

Publication number
SG72757A1
SG72757A1 SG1997003349A SG1997003349A SG72757A1 SG 72757 A1 SG72757 A1 SG 72757A1 SG 1997003349 A SG1997003349 A SG 1997003349A SG 1997003349 A SG1997003349 A SG 1997003349A SG 72757 A1 SG72757 A1 SG 72757A1
Authority
SG
Singapore
Prior art keywords
mold
polymer
lens
mold portions
portions
Prior art date
Application number
SG1997003349A
Other languages
English (en)
Inventor
Stephen R Beaton
Denwood F Ross
Craig W Walker
Original Assignee
Johnson & Johnson Vision Prod
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 Johnson & Johnson Vision Prod filed Critical Johnson & Johnson Vision Prod
Publication of SG72757A1 publication Critical patent/SG72757A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00038—Production of contact lenses
    • B29D11/00125—Auxiliary operations, e.g. removing oxygen from the mould, conveying moulds from a storage to the production line in an inert atmosphere
    • B29D11/00192—Demoulding, e.g. separating lenses from mould halves
    • B29D11/00211—Demoulding, e.g. separating lenses from mould halves using heating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/082—Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
    • 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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0003—Discharging moulded articles from the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00038—Production of contact lenses
    • B29D11/00125—Auxiliary operations, e.g. removing oxygen from the mould, conveying moulds from a storage to the production line in an inert atmosphere
    • B29D11/00192—Demoulding, e.g. separating lenses from mould halves
    • B29D11/00221—Demoulding, e.g. separating lenses from mould halves using prying means
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/808—Lens mold

Landscapes

  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Ophthalmology & Optometry (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Plasma & Fusion (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Eyeglasses (AREA)
  • Laser Beam Processing (AREA)
  • Laser Surgery Devices (AREA)
  • Radiation-Therapy Devices (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
SG1997003349A 1996-09-10 1997-09-09 Scanning laser demolding of ophthalmic lenses SG72757A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/709,832 US5815238A (en) 1996-09-10 1996-09-10 Scanning laser demolding of ophthalmic lenses

Publications (1)

Publication Number Publication Date
SG72757A1 true SG72757A1 (en) 2000-05-23

Family

ID=24851468

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1997003349A SG72757A1 (en) 1996-09-10 1997-09-09 Scanning laser demolding of ophthalmic lenses

Country Status (9)

Country Link
US (1) US5815238A (enExample)
EP (1) EP0850751B1 (enExample)
JP (1) JP4435880B2 (enExample)
AT (1) ATE212288T1 (enExample)
AU (1) AU736009B2 (enExample)
CA (1) CA2215063C (enExample)
DE (1) DE69710038T2 (enExample)
SG (1) SG72757A1 (enExample)
TW (1) TW362064B (enExample)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6609041B1 (en) * 1999-05-05 2003-08-19 Johnson & Johnson Vision Care, Inc. Method and system for SKU tracking and changeover
US6638451B1 (en) * 1999-08-31 2003-10-28 Novartis Ag Plastic casting molds
JP2002355830A (ja) * 2001-03-26 2002-12-10 Novartis Ag 眼科用レンズの製造のための型及び方法
US6663801B2 (en) * 2001-04-06 2003-12-16 Johnson & Johnson Vision Care, Inc. Silicon carbide IR-emitter heating device and method for demolding lenses
SG190218A1 (en) 2010-11-10 2013-06-28 Novartis Ag Method for making contact lenses
DE102016122060B3 (de) * 2016-11-16 2018-03-29 Csm Maschinen Gmbh Laserpressschweißen
JP6999273B2 (ja) * 2017-02-06 2022-02-10 株式会社ニデック 染色装置及び染色方法
EP3931626A4 (en) 2019-03-01 2023-03-15 Sightglass Vision, Inc. EYEGLASSES FOR REDUCING MYOPIC PROGRESSION AND METHOD OF MAKING THERE
CN111231055A (zh) * 2020-01-07 2020-06-05 国网四川省电力公司映秀湾水力发电总厂 一种混流式水轮机转轮叶片三维模型的逆向反求方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3809921A1 (de) * 1988-03-24 1989-10-12 Diehl Gmbh & Co Grossflaechiger hochenergie-laserspiegel und verfahren zum herstellen eines solchen spiegels
US4869745A (en) * 1989-04-24 1989-09-26 Flaming Dale G Apparatus for forming micropipette of controlled configuration by moving the point of heat application
DE4228528A1 (de) * 1991-08-29 1993-03-04 Okuma Machinery Works Ltd Verfahren und vorrichtung zur metallblechverarbeitung
US5334815A (en) * 1992-01-15 1994-08-02 Wear Guard Corp. Apparatus and method for producing a printing screen
US5269982A (en) * 1992-02-12 1993-12-14 Brotz Gregory R Process for manufacturing a shaped product
US5294379A (en) * 1992-09-18 1994-03-15 Johnson & Johnson Vision Products, Inc. Laser assisted demolding of ophthalmic lenses

Also Published As

Publication number Publication date
EP0850751B1 (en) 2002-01-23
JP4435880B2 (ja) 2010-03-24
DE69710038T2 (de) 2002-07-11
DE69710038D1 (de) 2002-03-14
TW362064B (en) 1999-06-21
US5815238A (en) 1998-09-29
EP0850751A1 (en) 1998-07-01
ATE212288T1 (de) 2002-02-15
JPH10128772A (ja) 1998-05-19
AU736009B2 (en) 2001-07-26
AU3747397A (en) 1998-03-12
CA2215063A1 (en) 1998-03-10
MX9706914A (es) 1998-05-31
CA2215063C (en) 2006-08-15

Similar Documents

Publication Publication Date Title
IL106653A0 (en) Laser assisted demolding of ophthalmic lenses
SG72757A1 (en) Scanning laser demolding of ophthalmic lenses
EP1342560B1 (en) Use of microwave energy to demold contact lenses
DK0528664T3 (da) Apparat og fremgangsmåde til separerbar sammensmeltning af linsestøbeformdele
EP0985520A2 (en) Mold assembly for forming opthalmic lens, method of producing the same, and method of producing opthalmic lens using the mold assembly
AU709005B2 (en) Conductive probe for heating contact lens mold assemblies during demolding
DK0671249T3 (da) Fremgangsmåde og indretning til fremstilling af optiske linser
SG43286A1 (en) Method for molding a hydrophilic contact lens
ATE202312T1 (de) Verfahren und vorrichtung zur laser-entformung
Pan et al. Cylindrical plastic lens array fabricated by a micro intrusion process
JP2001219438A (ja) プラスチック光学素子、プラスチック光学素子の成形金型およびプラスチック光学素子の成形方法
JP2799253B2 (ja) プラスチック成形装置
JP3197981B2 (ja) 射出成形方法
JPH1119956A (ja) プラスチックレンズ成形方法及びプラスチックレンズ
JPH0757306A (ja) 光ディスク成形用金型
TH27468B (th) วิธีการปลดปล่อยวัสดุโพลิเมอร์โปร่งใสออกจากแม่พิมพ์และการใช้วิธีการนั้นในการผลิตผลิตภัณฑ์วัสดุโพลิเมอร์โปร่งใส เช่น เลนส์สายตา