WO2008096830A1 - レンズ、及びレンズ製造に用いる射出成形用金型、並びにレンズの製造方法 - Google Patents

レンズ、及びレンズ製造に用いる射出成形用金型、並びにレンズの製造方法 Download PDF

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Publication number
WO2008096830A1
WO2008096830A1 PCT/JP2008/052069 JP2008052069W WO2008096830A1 WO 2008096830 A1 WO2008096830 A1 WO 2008096830A1 JP 2008052069 W JP2008052069 W JP 2008052069W WO 2008096830 A1 WO2008096830 A1 WO 2008096830A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
die
producing
injection
injection molding
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.)
Ceased
Application number
PCT/JP2008/052069
Other languages
English (en)
French (fr)
Inventor
Kazuya Ikuta
Renzaburou Miki
Kohji Minami
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Publication of WO2008096830A1 publication Critical patent/WO2008096830A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/44—Removing or ejecting moulded articles for undercut articles
    • B29C45/4407—Removing or ejecting moulded articles for undercut articles by flexible movement of undercut portions of the articles
    • 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
    • B29D11/00125—Auxiliary operations, e.g. removing oxygen from the mould, conveying moulds from a storage to the production line in an inert atmosphere
    • B29D11/00192—Demoulding, e.g. separating lenses from mould halves
    • 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
    • B29D11/00432—Auxiliary operations, e.g. machines for filling the moulds
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound 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)

Abstract

　本発明の射出成形用金型（３０）は、キャビティ（３）に、型開き方向とは異なる方向に傾斜した傾斜面（２１ａ及び２２ａ）を有する突起部形成用凹部（１０ａ及び１０ｂ）が形成されている。このキャビティ（３）に射出成形されるプラスチックレンズ（１９）には、その光学有効面の外に、突起部形成用凹部（１０ａ及び１０ｂ）によって射出成形された突起部（１４）が形成される。型開き時、この突起部（１４）は傾斜面（２１ａ及び２２ａ）に沿って型開き方向とは異なる方向に離型されるため、光学有効面（１１及び１２）が傾斜するようにプラスチックレンズ（１９）が回動して、射出成形用金型（３０）から離型する。これにより、エジェクターピンを用いることなく、また、レンズの光学面に突き出し跡を付けることなく、液状樹脂材料を射出成形して製造するレンズを離型することが可能な射出成形用金型、及びレンズの製造方法、並びにレンズを提供する。
PCT/JP2008/052069 2007-02-08 2008-02-07 レンズ、及びレンズ製造に用いる射出成形用金型、並びにレンズの製造方法 Ceased WO2008096830A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-029824 2007-02-08
JP2007029824A JP2008194858A (ja) 2007-02-08 2007-02-08 レンズ、及びレンズ製造に用いる射出成形用金型、並びにレンズの製造方法

Publications (1)

Publication Number Publication Date
WO2008096830A1 true WO2008096830A1 (ja) 2008-08-14

Family

ID=39681733

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/052069 Ceased WO2008096830A1 (ja) 2007-02-08 2008-02-07 レンズ、及びレンズ製造に用いる射出成形用金型、並びにレンズの製造方法

Country Status (2)

Country Link
JP (1) JP2008194858A (ja)
WO (1) WO2008096830A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116277749A (zh) * 2023-02-06 2023-06-23 京东方科技集团股份有限公司 注塑件、显示装置和用于成型注塑件的模具

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04294117A (ja) * 1991-03-22 1992-10-19 Olympus Optical Co Ltd 厚肉レンズの成形金型とその成形方法
JPH10329176A (ja) * 1997-05-30 1998-12-15 Olympus Optical Co Ltd プラスチックレンズ用射出成形金型
JP2003305754A (ja) * 2002-04-11 2003-10-28 Ricoh Co Ltd プラスチック成形品及び該プラスチック成形品の成形用金型

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04294117A (ja) * 1991-03-22 1992-10-19 Olympus Optical Co Ltd 厚肉レンズの成形金型とその成形方法
JPH10329176A (ja) * 1997-05-30 1998-12-15 Olympus Optical Co Ltd プラスチックレンズ用射出成形金型
JP2003305754A (ja) * 2002-04-11 2003-10-28 Ricoh Co Ltd プラスチック成形品及び該プラスチック成形品の成形用金型

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116277749A (zh) * 2023-02-06 2023-06-23 京东方科技集团股份有限公司 注塑件、显示装置和用于成型注塑件的模具

Also Published As

Publication number Publication date
JP2008194858A (ja) 2008-08-28

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