JPS649183B2 - - Google Patents

Info

Publication number
JPS649183B2
JPS649183B2 JP57227910A JP22791082A JPS649183B2 JP S649183 B2 JPS649183 B2 JP S649183B2 JP 57227910 A JP57227910 A JP 57227910A JP 22791082 A JP22791082 A JP 22791082A JP S649183 B2 JPS649183 B2 JP S649183B2
Authority
JP
Japan
Prior art keywords
fresnel lens
plate
stretched
synthetic resin
multifocal
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
JP57227910A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59120424A (ja
Inventor
Ryoichi Mukai
Masao Inoe
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.)
Mitsubishi Chemical Corp
Original Assignee
Mitsubishi Rayon 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 Mitsubishi Rayon Co Ltd filed Critical Mitsubishi Rayon Co Ltd
Priority to JP57227910A priority Critical patent/JPS59120424A/ja
Publication of JPS59120424A publication Critical patent/JPS59120424A/ja
Publication of JPS649183B2 publication Critical patent/JPS649183B2/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)
  • Overhead Projectors And Projection Screens (AREA)
JP57227910A 1982-12-27 1982-12-27 多焦点フレネルレンズの製造方法 Granted JPS59120424A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57227910A JPS59120424A (ja) 1982-12-27 1982-12-27 多焦点フレネルレンズの製造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57227910A JPS59120424A (ja) 1982-12-27 1982-12-27 多焦点フレネルレンズの製造方法

Publications (2)

Publication Number Publication Date
JPS59120424A JPS59120424A (ja) 1984-07-12
JPS649183B2 true JPS649183B2 (enrdf_load_html_response) 1989-02-16

Family

ID=16868213

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57227910A Granted JPS59120424A (ja) 1982-12-27 1982-12-27 多焦点フレネルレンズの製造方法

Country Status (1)

Country Link
JP (1) JPS59120424A (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102331654A (zh) * 2011-05-27 2012-01-25 苏州佳世达光电有限公司 用于投影机的镜片模组、投影机及投影机的播放方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK0790898T3 (da) * 1994-11-18 2000-08-07 Giesecke & Devrient Gmbh Proces til fremstilling af databærer
JP4613581B2 (ja) * 2004-10-29 2011-01-19 株式会社日立製作所 画像表示装置、それに用いられる透過型スクリーン及び反射ミラー
US20060141219A1 (en) * 2004-12-23 2006-06-29 Benson Olester Jr Roll of a uniaxially oriented article having a structured surface
US20060141220A1 (en) * 2004-12-23 2006-06-29 Merrill William W Uniaxially oriented article having a structured surface
US20060141218A1 (en) * 2004-12-23 2006-06-29 Biernath Rolf W Uniaxially oriented articles having structured surface

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102331654A (zh) * 2011-05-27 2012-01-25 苏州佳世达光电有限公司 用于投影机的镜片模组、投影机及投影机的播放方法

Also Published As

Publication number Publication date
JPS59120424A (ja) 1984-07-12

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