JPS6230905B2 - - Google Patents

Info

Publication number
JPS6230905B2
JPS6230905B2 JP55185499A JP18549980A JPS6230905B2 JP S6230905 B2 JPS6230905 B2 JP S6230905B2 JP 55185499 A JP55185499 A JP 55185499A JP 18549980 A JP18549980 A JP 18549980A JP S6230905 B2 JPS6230905 B2 JP S6230905B2
Authority
JP
Japan
Prior art keywords
fresnel lens
positioning
mold
plating
double
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
JP55185499A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57109618A (en
Inventor
Tatsumi Takahashi
Akira Izawa
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.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing 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 Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP18549980A priority Critical patent/JPS57109618A/ja
Publication of JPS57109618A publication Critical patent/JPS57109618A/ja
Publication of JPS6230905B2 publication Critical patent/JPS6230905B2/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
    • B29D11/00269—Fresnel 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
    • 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
    • B29L2011/005—Fresnel lenses

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)
JP18549980A 1980-12-27 1980-12-27 Both faces fresnel lens and its manufacture Granted JPS57109618A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18549980A JPS57109618A (en) 1980-12-27 1980-12-27 Both faces fresnel lens and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18549980A JPS57109618A (en) 1980-12-27 1980-12-27 Both faces fresnel lens and its manufacture

Publications (2)

Publication Number Publication Date
JPS57109618A JPS57109618A (en) 1982-07-08
JPS6230905B2 true JPS6230905B2 (enExample) 1987-07-06

Family

ID=16171833

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18549980A Granted JPS57109618A (en) 1980-12-27 1980-12-27 Both faces fresnel lens and its manufacture

Country Status (1)

Country Link
JP (1) JPS57109618A (enExample)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59137902A (ja) * 1983-01-28 1984-08-08 Asahi Chem Ind Co Ltd 合成樹脂製フレネルレンズ
JPS60185904A (ja) * 1984-03-05 1985-09-21 Matsushita Electric Ind Co Ltd 単板レンズ
JP2559601B2 (ja) * 1987-11-09 1996-12-04 コニカ株式会社 大口径レンズ
US4900129A (en) * 1988-12-16 1990-02-13 Minnesota Mining And Manufacturing Company Dual grooved Fresnel lens for overhead projection
EP1180428B1 (en) * 2000-08-16 2005-07-06 Prodisc Technology Inc. Method for Manufacturing a Plastic Optical Component
US7106528B2 (en) 2001-12-04 2006-09-12 Riken Method and apparatus for manufacturing large double-sided curved Fresnel lens
JP2013033163A (ja) * 2011-08-03 2013-02-14 Tomy Co Ltd 投影装置
FR2980276B1 (fr) * 2011-09-20 2013-10-18 Essilor Int Lentille a plusieurs surfaces a zones
US10254942B2 (en) 2014-07-31 2019-04-09 Microsoft Technology Licensing, Llc Adaptive sizing and positioning of application windows
US10678412B2 (en) 2014-07-31 2020-06-09 Microsoft Technology Licensing, Llc Dynamic joint dividers for application windows
US10592080B2 (en) 2014-07-31 2020-03-17 Microsoft Technology Licensing, Llc Assisted presentation of application windows
US10018844B2 (en) 2015-02-09 2018-07-10 Microsoft Technology Licensing, Llc Wearable image display system
US9827209B2 (en) 2015-02-09 2017-11-28 Microsoft Technology Licensing, Llc Display system
US9429692B1 (en) * 2015-02-09 2016-08-30 Microsoft Technology Licensing, Llc Optical components
US10317677B2 (en) 2015-02-09 2019-06-11 Microsoft Technology Licensing, Llc Display system
US11086216B2 (en) 2015-02-09 2021-08-10 Microsoft Technology Licensing, Llc Generating electronic components
CN105259599B (zh) * 2015-11-24 2018-08-28 四川钟顺太阳能开发有限公司 一种双面菲涅尔透镜

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53101551U (enExample) * 1977-01-21 1978-08-16

Also Published As

Publication number Publication date
JPS57109618A (en) 1982-07-08

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