JPS578119A - Molding method of plastic lens - Google Patents

Molding method of plastic lens

Info

Publication number
JPS578119A
JPS578119A JP8212880A JP8212880A JPS578119A JP S578119 A JPS578119 A JP S578119A JP 8212880 A JP8212880 A JP 8212880A JP 8212880 A JP8212880 A JP 8212880A JP S578119 A JPS578119 A JP S578119A
Authority
JP
Japan
Prior art keywords
plastic lens
molds
cavity
supporting members
gap
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.)
Pending
Application number
JP8212880A
Other languages
Japanese (ja)
Inventor
Naonori Hayashi
Kenji Muranaka
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.)
AGC Inc
Original Assignee
Asahi Glass Co Ltd
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 Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Priority to JP8212880A priority Critical patent/JPS578119A/en
Publication of JPS578119A publication Critical patent/JPS578119A/en
Pending 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
    • B29C33/0038—Moulds or cores; Details thereof or accessories therefor with sealing means or the like
    • 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
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/76—Office equipment or accessories
    • B29L2031/7602—Maps

Landscapes

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

Abstract

PURPOSE:To prevent the change in the thickness of a cavity and improve the dimensional resistance of a plastic lens, by a method wherein a cavity is sealed by using a sealing film, and the gap between molds is maintained by using gap supporting members. CONSTITUTION:Two disk-shaped molds 1 and 2 are arranged so that the surfaces 3 and 4 to form the surfaces of a plastic lens face to each other. Gap supporting members 5 are inserted to maintain the distance between the two surfaces 3 and 4 at a given value. A sealing tape 6 such as an adhesive tape is wound around the sides of the two molds 1 and 2 to contact them closely to each other and to seal a cavity 7. After a plastic material has hardened, the molds 1 and 2 and the sealing film 6 are removed. Moreover, after the gap supporting members 5 have been removed from the molded object, the peripheral part of the molded object is removed to obtain a plastic lens.
JP8212880A 1980-06-19 1980-06-19 Molding method of plastic lens Pending JPS578119A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8212880A JPS578119A (en) 1980-06-19 1980-06-19 Molding method of plastic lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8212880A JPS578119A (en) 1980-06-19 1980-06-19 Molding method of plastic lens

Publications (1)

Publication Number Publication Date
JPS578119A true JPS578119A (en) 1982-01-16

Family

ID=13765771

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8212880A Pending JPS578119A (en) 1980-06-19 1980-06-19 Molding method of plastic lens

Country Status (1)

Country Link
JP (1) JPS578119A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293250A2 (en) * 1987-05-29 1988-11-30 Honda Giken Kogyo Kabushiki Kaisha Method of manufacturing a plastic sheet and packing for use in the method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0293250A2 (en) * 1987-05-29 1988-11-30 Honda Giken Kogyo Kabushiki Kaisha Method of manufacturing a plastic sheet and packing for use in the method
EP0293250A3 (en) * 1987-05-29 1990-08-29 Honda Giken Kogyo Kabushiki Kaisha Method of manufacturing a plastic sheet and packing for use in the method

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