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GB1463731A - Method of forming an optical member such as a lens - Google Patents

Method of forming an optical member such as a lens

Info

Publication number
GB1463731A
GB1463731A GB4762674A GB4762674A GB1463731A GB 1463731 A GB1463731 A GB 1463731A GB 4762674 A GB4762674 A GB 4762674A GB 4762674 A GB4762674 A GB 4762674A GB 1463731 A GB1463731 A GB 1463731A
Authority
GB
United Kingdom
Prior art keywords
mould
injection
lens
forming
optical member
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.)
Expired
Application number
GB4762674A
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.)
Deutsche Spiegelglas AG
Original Assignee
Deutsche Spiegelglas AG
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 Deutsche Spiegelglas AG filed Critical Deutsche Spiegelglas AG
Publication of GB1463731A publication Critical patent/GB1463731A/en
Expired 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
    • B29D11/00528—Consisting of two mould halves joined by an annular gasket
    • 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
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • 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
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B29C33/40—Plastics, e.g. foam or rubber
    • B29C33/405—Elastomers, e.g. rubber
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/37—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings
    • 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
    • B29D11/00413—Production of simple or compound lenses made by moulding between two mould parts which are not in direct contact with one another, e.g. comprising a seal between or on the edges
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2909/00—Use of inorganic materials not provided for in groups B29K2803/00 - B29K2807/00, as mould material
    • B29K2909/02—Ceramics
    • 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

Landscapes

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

Abstract

1463731 Injection mould DEUTSCHE SPIEGELGLAS AG 4 Nov 1974 [2 Nov 1973] 47626/74 Heading B5A A mould (8) Fig. 1 (not shown), for casting a body of plastics material having an optical surface comprises a mould member 10 or 12 of injection moulded plastics material having a moulded surface of high optical quality. The mould members 10, 12 are made in an injection mould 9 comprising inserts 22, 24 of glassceramic each having a high optical quality surface facing the mould halves to be formed. The mould members 10, 12 may be made of a polyamide or polyethylene terephthalate. Injection is effected through a passage 13.
GB4762674A 1973-11-02 1974-11-04 Method of forming an optical member such as a lens Expired GB1463731A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732354987 DE2354987C2 (en) 1973-11-02 1973-11-02 Casting mold for the production of plastic lenses with optical surface quality and device for their production

Publications (1)

Publication Number Publication Date
GB1463731A true GB1463731A (en) 1977-02-09

Family

ID=5897126

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4762674A Expired GB1463731A (en) 1973-11-02 1974-11-04 Method of forming an optical member such as a lens

Country Status (4)

Country Link
DE (1) DE2354987C2 (en)
FR (1) FR2249755B1 (en)
GB (1) GB1463731A (en)
IT (1) IT1025328B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189181A (en) * 1986-04-19 1987-10-21 Kloeckner Ferromatik Desma Injection moulding information carrying plates
EP1342559A1 (en) * 2002-03-04 2003-09-10 Johnson & Johnson Vision Care, Inc. Method of fabricating an injection mould insert for contact lens moulds and injection mould insert

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3112751A1 (en) * 1981-03-31 1982-10-07 Fa. Carl Zeiss, 7920 Heidenheim MOLDING TOOL FOR PRODUCING PARTS FROM THERMOPLASTIC MATERIAL
EP0377020A4 (en) * 1988-06-01 1991-04-24 Vision Science, Inc. Method and apparatus for manufacturing disposable optical molds
JP2871795B2 (en) * 1990-03-13 1999-03-17 富士重工業株式会社 Composite material mold
US5141678A (en) * 1990-10-10 1992-08-25 Blum Ronald D Method for forming disposable molds for producing optical quality lenses

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189181A (en) * 1986-04-19 1987-10-21 Kloeckner Ferromatik Desma Injection moulding information carrying plates
GB2189181B (en) * 1986-04-19 1989-11-29 Kloeckner Ferromatik Desma Injection mould for injection-moulding information-carrying plates
EP1342559A1 (en) * 2002-03-04 2003-09-10 Johnson & Johnson Vision Care, Inc. Method of fabricating an injection mould insert for contact lens moulds and injection mould insert

Also Published As

Publication number Publication date
DE2354987C2 (en) 1976-01-02
FR2249755A1 (en) 1975-05-30
IT1025328B (en) 1978-08-10
FR2249755B1 (en) 1978-09-29
DE2354987B1 (en) 1975-04-30

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee