JPS57173136A - Molding method for plastic lens - Google Patents

Molding method for plastic lens

Info

Publication number
JPS57173136A
JPS57173136A JP5719081A JP5719081A JPS57173136A JP S57173136 A JPS57173136 A JP S57173136A JP 5719081 A JP5719081 A JP 5719081A JP 5719081 A JP5719081 A JP 5719081A JP S57173136 A JPS57173136 A JP S57173136A
Authority
JP
Japan
Prior art keywords
lens
resin
integral
lenses
die
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
JP5719081A
Other languages
Japanese (ja)
Inventor
Seiichiro Shimomura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP5719081A priority Critical patent/JPS57173136A/en
Publication of JPS57173136A publication Critical patent/JPS57173136A/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
    • 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
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14467—Joining articles or parts of a single article
    • 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
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14467—Joining articles or parts of a single article
    • B29C2045/14532—Joining articles or parts of a single article injecting between two sheets
    • 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
    • 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)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To mass-produce the thick lens having no molding shrinkage strain by forming a resin reservoir at the side reverse to an injection port for resin in a method which mounts a left hemisphere lens and a right hemisphere lens to a die and molds an integral lens between the lenses. CONSTITUTION:The left hemisphere lens 4 and the right hemisphere lens 4 previously molded are mounted to the die 2 as an insert, the resin is injected between the lenses from a molding head 1, and the integral lens 5 is molded. The resin reservoir 6, in which the resin is received is formed in shape that penetrates the integral lens 5 at thAat time. The lens is further unified and equalized because air in hollowness can smoothly be extruded by forming the resin reservoir 6.
JP5719081A 1981-04-17 1981-04-17 Molding method for plastic lens Pending JPS57173136A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5719081A JPS57173136A (en) 1981-04-17 1981-04-17 Molding method for plastic lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5719081A JPS57173136A (en) 1981-04-17 1981-04-17 Molding method for plastic lens

Publications (1)

Publication Number Publication Date
JPS57173136A true JPS57173136A (en) 1982-10-25

Family

ID=13048564

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5719081A Pending JPS57173136A (en) 1981-04-17 1981-04-17 Molding method for plastic lens

Country Status (1)

Country Link
JP (1) JPS57173136A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61100420A (en) * 1984-10-24 1986-05-19 Matsushita Electric Ind Co Ltd Manufacture of plastic lens
EP0839636A2 (en) * 1996-11-05 1998-05-06 Bridgestone Corporation Method of manufacturing optical-use plastic products
JP2013223936A (en) * 2012-04-20 2013-10-31 Nsk Ltd Method of manufacturing retainer for rolling bearing, ejection mold, and retainer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61100420A (en) * 1984-10-24 1986-05-19 Matsushita Electric Ind Co Ltd Manufacture of plastic lens
EP0839636A2 (en) * 1996-11-05 1998-05-06 Bridgestone Corporation Method of manufacturing optical-use plastic products
EP0839636A3 (en) * 1996-11-05 1998-07-22 Bridgestone Corporation Method of manufacturing optical-use plastic products
JP2013223936A (en) * 2012-04-20 2013-10-31 Nsk Ltd Method of manufacturing retainer for rolling bearing, ejection mold, and retainer

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