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JPS56159127A - Manufacture of fresnel lens - Google Patents

Manufacture of fresnel lens

Info

Publication number
JPS56159127A
JPS56159127A JP6257080A JP6257080A JPS56159127A JP S56159127 A JPS56159127 A JP S56159127A JP 6257080 A JP6257080 A JP 6257080A JP 6257080 A JP6257080 A JP 6257080A JP S56159127 A JPS56159127 A JP S56159127A
Authority
JP
Japan
Prior art keywords
resins
fresnel lenses
molds
lenses
belts
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
JP6257080A
Other languages
Japanese (ja)
Other versions
JPS6115809B2 (en
Inventor
Akira Izawa
Fumio Takagi
Taiji Ishii
Masaki Tsukada
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 JP6257080A priority Critical patent/JPS56159127A/en
Publication of JPS56159127A publication Critical patent/JPS56159127A/en
Publication of JPS6115809B2 publication Critical patent/JPS6115809B2/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

Landscapes

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

Abstract

PURPOSE:To enable stabilized production in quantity of Fresnel lenses in a process for producing Fresnel lenses from synthetic resin, by employing an endless belt type press molding apparatus provided with molds having shapes reverse to the shape of the lens. CONSTITUTION:The molds having shapes reverse to the shape of Fresnel lenses are arranged on a set of upper and lower stainless steel endless belts 1, 2 and the belts are rotated at the same speed by driving rolls 3. A lens material 8 such as acrylic resins, ABC resins, polystyrene resins, polycarbonate resins, PVC resins, and the like extruded through an extrusion molding apparatus 8 is fed between the upper and lower endless belts 1, 2, and after it is pressed by the molds into Fresnel lenses at parallel travelling sections of a heating zone H heated by heaters 6, the lenses are cooled at a cooling zone C and then removed.
JP6257080A 1980-05-12 1980-05-12 Manufacture of fresnel lens Granted JPS56159127A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6257080A JPS56159127A (en) 1980-05-12 1980-05-12 Manufacture of fresnel lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6257080A JPS56159127A (en) 1980-05-12 1980-05-12 Manufacture of fresnel lens

Publications (2)

Publication Number Publication Date
JPS56159127A true JPS56159127A (en) 1981-12-08
JPS6115809B2 JPS6115809B2 (en) 1986-04-25

Family

ID=13204080

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6257080A Granted JPS56159127A (en) 1980-05-12 1980-05-12 Manufacture of fresnel lens

Country Status (1)

Country Link
JP (1) JPS56159127A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59137902A (en) * 1983-01-28 1984-08-08 Asahi Chem Ind Co Ltd Fresnel lens made of plastic
JPS6147237A (en) * 1984-08-10 1986-03-07 アメレース・コーポレーシヨン Method aand device for continuously embossing precision optical pattern
US5124089A (en) * 1986-12-25 1992-06-23 Sony Corporation Method of producing transmissive screens
WO1997015435A1 (en) * 1995-10-24 1997-05-01 Nippon Carbide Kogyo Kabushiki Kaisha Method of continuously forming optical device assembly and apparatus therefor
JP2006326948A (en) * 2005-05-25 2006-12-07 Hitachi Plant Technologies Ltd Microstructure transfer device
WO2010021133A1 (en) * 2008-08-20 2010-02-25 日本カーバイド工業株式会社 Optical sheet manufacturing device and optical sheet manufacturing method
JP2011098530A (en) * 2009-11-09 2011-05-19 Hitachi Industrial Equipment Systems Co Ltd Fine structure transfer apparatus

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59137902A (en) * 1983-01-28 1984-08-08 Asahi Chem Ind Co Ltd Fresnel lens made of plastic
JPS6147237A (en) * 1984-08-10 1986-03-07 アメレース・コーポレーシヨン Method aand device for continuously embossing precision optical pattern
US5124089A (en) * 1986-12-25 1992-06-23 Sony Corporation Method of producing transmissive screens
WO1997015435A1 (en) * 1995-10-24 1997-05-01 Nippon Carbide Kogyo Kabushiki Kaisha Method of continuously forming optical device assembly and apparatus therefor
JP2006326948A (en) * 2005-05-25 2006-12-07 Hitachi Plant Technologies Ltd Microstructure transfer device
WO2010021133A1 (en) * 2008-08-20 2010-02-25 日本カーバイド工業株式会社 Optical sheet manufacturing device and optical sheet manufacturing method
CN102131630A (en) * 2008-08-20 2011-07-20 日本电石工业株式会社 Optical sheet manufacturing device and optical sheet manufacturing method
JPWO2010021133A1 (en) * 2008-08-20 2012-01-26 日本カーバイド工業株式会社 Optical sheet manufacturing apparatus and optical sheet manufacturing method
KR101321682B1 (en) * 2008-08-20 2013-10-23 닛뽕 카바이도 고교 가부시키가이샤 Optical sheet manufacturing device and optical sheet manufacturing method
US8728360B2 (en) 2008-08-20 2014-05-20 Nippon Carbide Industries Co., Inc. Apparatus and method for producing optical sheeting
JP2011098530A (en) * 2009-11-09 2011-05-19 Hitachi Industrial Equipment Systems Co Ltd Fine structure transfer apparatus

Also Published As

Publication number Publication date
JPS6115809B2 (en) 1986-04-25

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