WO2007143418A3 - Delensing of ophthalmic lenses using gas - Google Patents

Delensing of ophthalmic lenses using gas Download PDF

Info

Publication number
WO2007143418A3
WO2007143418A3 PCT/US2007/069679 US2007069679W WO2007143418A3 WO 2007143418 A3 WO2007143418 A3 WO 2007143418A3 US 2007069679 W US2007069679 W US 2007069679W WO 2007143418 A3 WO2007143418 A3 WO 2007143418A3
Authority
WO
WIPO (PCT)
Prior art keywords
mold member
contact lens
delensing
gas
polymerized
Prior art date
Application number
PCT/US2007/069679
Other languages
French (fr)
Other versions
WO2007143418A2 (en
Inventor
Zbigniew Witko
Original Assignee
Coopervision Int Holding Co Lp
Zbigniew Witko
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
Priority claimed from US11/752,877 external-priority patent/US7811483B2/en
Application filed by Coopervision Int Holding Co Lp, Zbigniew Witko filed Critical Coopervision Int Holding Co Lp
Priority to KR1020087029168A priority Critical patent/KR101274786B1/en
Priority to CN2007800198345A priority patent/CN101454145B/en
Publication of WO2007143418A2 publication Critical patent/WO2007143418A2/en
Publication of WO2007143418A3 publication Critical patent/WO2007143418A3/en
Priority to HK09108402.6A priority patent/HK1129345A1/en

Links

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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/46—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles using fluid pressure
    • 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
    • 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
    • B29L2011/0041—Contact lenses

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Eyeglasses (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Contact lens delensing methods are described, and the present delensing methods include using a gas to facilitate separation of a polymerized contact lens product from a contact lens mold member. The contact lens mold member is compressed to deform a portion of the mold member, and gas, such as air, is directed toward the polymerized contact lens product in contact with the portion. The contact lens mold member can be compressed as the mold member, and lens product, rotate. A vacuum device can be used to separate the polymerized contact lens product from the contact lens mold member after compressing the portion of the mold member and directing the gas towards the mold member. Delensing systems used to practice the present methods are also described.
PCT/US2007/069679 2006-06-01 2007-05-24 Delensing of ophthalmic lenses using gas WO2007143418A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020087029168A KR101274786B1 (en) 2006-06-01 2007-05-24 Delensing of ophthalmic lenses using gas
CN2007800198345A CN101454145B (en) 2006-06-01 2007-05-24 Delensing of ophthalmic lenses using gas
HK09108402.6A HK1129345A1 (en) 2006-06-01 2009-09-14 Delensing of ophthalmic lenses using gas

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US80368906P 2006-06-01 2006-06-01
US60/803,689 2006-06-01
US11/752,877 US7811483B2 (en) 2006-06-01 2007-05-23 Delensing of ophthalmic lenses using gas
US11/752,877 2007-05-23

Publications (2)

Publication Number Publication Date
WO2007143418A2 WO2007143418A2 (en) 2007-12-13
WO2007143418A3 true WO2007143418A3 (en) 2008-04-03

Family

ID=38789184

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/069679 WO2007143418A2 (en) 2006-06-01 2007-05-24 Delensing of ophthalmic lenses using gas

Country Status (1)

Country Link
WO (1) WO2007143418A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9296160B2 (en) 2009-09-11 2016-03-29 Coopervision International Holding Company, Lp Method for moving wet ophthalmic lenses during their manufacture
CN104802347B (en) * 2015-05-11 2017-01-25 江苏万新光学有限公司 Lens degumming device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6039899A (en) * 1994-06-10 2000-03-21 Johnson & Johnson Vision Products, Inc. Consolidated contact lens molding
US20060097415A1 (en) * 2004-11-05 2006-05-11 Watterson Robert J Jr Methods of demolding ophthalmic lenses

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6039899A (en) * 1994-06-10 2000-03-21 Johnson & Johnson Vision Products, Inc. Consolidated contact lens molding
US20060097415A1 (en) * 2004-11-05 2006-05-11 Watterson Robert J Jr Methods of demolding ophthalmic lenses

Also Published As

Publication number Publication date
WO2007143418A2 (en) 2007-12-13

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