JPS56135032A - Formation of plastic lens - Google Patents

Formation of plastic lens

Info

Publication number
JPS56135032A
JPS56135032A JP3692980A JP3692980A JPS56135032A JP S56135032 A JPS56135032 A JP S56135032A JP 3692980 A JP3692980 A JP 3692980A JP 3692980 A JP3692980 A JP 3692980A JP S56135032 A JPS56135032 A JP S56135032A
Authority
JP
Japan
Prior art keywords
molds
spacer
positioning
mold
contact
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.)
Granted
Application number
JP3692980A
Other languages
Japanese (ja)
Other versions
JPS6339409B2 (en
Inventor
Naonori Hayashi
Mamoru Koda
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 JP3692980A priority Critical patent/JPS56135032A/en
Publication of JPS56135032A publication Critical patent/JPS56135032A/en
Publication of JPS6339409B2 publication Critical patent/JPS6339409B2/ja
Granted 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 obtain a plastic lens having excellent impact resistance and excellent scratch resistance by assembling molds by using a spacer to position them in contact with the curved surfaces of two molds in a practically linear or spotted state. CONSTITUTION:The contact between the side of a mold 23 with a convex surface and the inside surface of a positioning spacer is not necessarily needed, and also the formation of a plane is not needed on the periphery of the concave surface 26 of a mold 25. The positioning spacer 24 has a convextity 27 with a rising part 28 whose end is in contact with the curved surface of the mold 25 in an annular state. The positioning of the molds 23 and 25 is made while keeping any one of the molds in a movable state, and in case where the positioning spacer is used, the movable mold is moved and the spacer is removed from the molds after the positioning.
JP3692980A 1980-03-25 1980-03-25 Formation of plastic lens Granted JPS56135032A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3692980A JPS56135032A (en) 1980-03-25 1980-03-25 Formation of plastic lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3692980A JPS56135032A (en) 1980-03-25 1980-03-25 Formation of plastic lens

Publications (2)

Publication Number Publication Date
JPS56135032A true JPS56135032A (en) 1981-10-22
JPS6339409B2 JPS6339409B2 (en) 1988-08-04

Family

ID=12483441

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3692980A Granted JPS56135032A (en) 1980-03-25 1980-03-25 Formation of plastic lens

Country Status (1)

Country Link
JP (1) JPS56135032A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63247014A (en) * 1987-04-03 1988-10-13 Takashi Mori Manufacture of transparent capusle
WO2001032407A1 (en) * 1999-11-04 2001-05-10 Concepcionlicence Ag Device for the production of optical lenses of polymerizable material
WO2001074135A3 (en) * 2000-03-30 2002-02-07 Q2100 Inc Gasket and mold assembly for producing plastic lenses
JP2002200647A (en) * 2000-12-28 2002-07-16 Sony Corp Optical element, mold for optical element, and method for manufacturing optical element
US6528955B1 (en) 2000-03-30 2003-03-04 Q2100, Inc. Ballast system for a fluorescent lamp
EP1685935A1 (en) * 2003-10-31 2006-08-02 Hoya Corporation Gasket for molding plastic lens
JP2009119886A (en) * 2009-03-12 2009-06-04 Konica Minolta Holdings Inc Optical element molding apparatus
JP2009119885A (en) * 2009-03-12 2009-06-04 Konica Minolta Holdings Inc Optical element molding apparatus

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63247014A (en) * 1987-04-03 1988-10-13 Takashi Mori Manufacture of transparent capusle
JPH0416050B2 (en) * 1987-04-03 1992-03-19 Takashi Mori
WO2001032407A1 (en) * 1999-11-04 2001-05-10 Concepcionlicence Ag Device for the production of optical lenses of polymerizable material
US6419860B1 (en) 1999-11-04 2002-07-16 Concepcionlicence Ag Device for the production of optical lenses of polymerizable material
WO2001074135A3 (en) * 2000-03-30 2002-02-07 Q2100 Inc Gasket and mold assembly for producing plastic lenses
US6528955B1 (en) 2000-03-30 2003-03-04 Q2100, Inc. Ballast system for a fluorescent lamp
JP2002200647A (en) * 2000-12-28 2002-07-16 Sony Corp Optical element, mold for optical element, and method for manufacturing optical element
EP1685935A1 (en) * 2003-10-31 2006-08-02 Hoya Corporation Gasket for molding plastic lens
EP1685935A4 (en) * 2003-10-31 2011-11-02 Hoya Corp Gasket for molding plastic lens
JP2009119886A (en) * 2009-03-12 2009-06-04 Konica Minolta Holdings Inc Optical element molding apparatus
JP2009119885A (en) * 2009-03-12 2009-06-04 Konica Minolta Holdings Inc Optical element molding apparatus

Also Published As

Publication number Publication date
JPS6339409B2 (en) 1988-08-04

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