GB8904140D0 - Contact lens production - Google Patents

Contact lens production

Info

Publication number
GB8904140D0
GB8904140D0 GB898904140A GB8904140A GB8904140D0 GB 8904140 D0 GB8904140 D0 GB 8904140D0 GB 898904140 A GB898904140 A GB 898904140A GB 8904140 A GB8904140 A GB 8904140A GB 8904140 D0 GB8904140 D0 GB 8904140D0
Authority
GB
United Kingdom
Prior art keywords
contact lens
lens production
production
contact
lens
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.)
Withdrawn
Application number
GB898904140A
Other versions
GB2216065A (en
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.)
GALLEY GEOFFREY H
Original Assignee
GALLEY GEOFFREY H
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 GB888804274A external-priority patent/GB8804274D0/en
Priority claimed from GB888829176A external-priority patent/GB8829176D0/en
Application filed by GALLEY GEOFFREY H filed Critical GALLEY GEOFFREY H
Publication of GB8904140D0 publication Critical patent/GB8904140D0/en
Publication of GB2216065A publication Critical patent/GB2216065A/en
Withdrawn legal-status Critical Current

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
    • B29D11/0048—Moulds for lenses
    • B29D11/00576—Moulds for lenses with means to engage flash, e.g. HEMA ring
    • B29D11/00586—Moulds for lenses with means to engage flash, e.g. HEMA ring and removing the flash or HEMA ring
    • 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
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/26—Moulds or cores
    • 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
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/40—Compensating volume change, e.g. retraction
    • 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
    • B29D11/00057—Production of contact lenses characterised by the shape or surface condition of the edge, e.g. flashless, burrless, smooth

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Mechanical Engineering (AREA)
  • Eyeglasses (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
GB8904140A 1988-02-24 1989-02-23 Contact lens production Withdrawn GB2216065A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888804274A GB8804274D0 (en) 1988-02-24 1988-02-24 Method of manufacturing contact lenses
GB888829176A GB8829176D0 (en) 1988-12-14 1988-12-14 Methods of manufacturing contact lenses by a cast moulding process

Publications (2)

Publication Number Publication Date
GB8904140D0 true GB8904140D0 (en) 1989-04-05
GB2216065A GB2216065A (en) 1989-10-04

Family

ID=26293531

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8904140A Withdrawn GB2216065A (en) 1988-02-24 1989-02-23 Contact lens production

Country Status (1)

Country Link
GB (1) GB2216065A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8909781D0 (en) * 1989-04-28 1989-06-14 Sealey Michael J Lens mould
US5252056A (en) * 1990-03-16 1993-10-12 Ciba-Geigy Corporation Contact lens casting mould
IL97175A (en) * 1990-03-16 1996-01-31 Ciba Geigy Contact lens casting mould
US5254000A (en) * 1992-04-23 1993-10-19 Corning Incorporated Organic polymer lens mold
US5649874A (en) * 1996-08-05 1997-07-22 Marble Vision Inc. Transparent ball with insert, and process of manufacture thereof
DE19727671C2 (en) * 1997-06-30 2000-04-13 Woehlk Contact Linsen Gmbh Device for producing molded articles from a polymerizable mixture
FR2790706B1 (en) * 1999-03-08 2001-06-08 Essilor Int THREE-PART MOLD FOR THE MANUFACTURE OF EYE ARTICLES OF TRANSPARENT POLYMERIC MATERIAL

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4540534A (en) * 1983-10-11 1985-09-10 American Optical Corporation Apparatus and method for injection molding lenses

Also Published As

Publication number Publication date
GB2216065A (en) 1989-10-04

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)