JPS6426703U - - Google Patents

Info

Publication number
JPS6426703U
JPS6426703U JP12037987U JP12037987U JPS6426703U JP S6426703 U JPS6426703 U JP S6426703U JP 12037987 U JP12037987 U JP 12037987U JP 12037987 U JP12037987 U JP 12037987U JP S6426703 U JPS6426703 U JP S6426703U
Authority
JP
Japan
Prior art keywords
fresnel lens
circular
lens
fresnel
focal length
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.)
Pending
Application number
JP12037987U
Other languages
English (en)
Japanese (ja)
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 filed Critical
Priority to JP12037987U priority Critical patent/JPS6426703U/ja
Publication of JPS6426703U publication Critical patent/JPS6426703U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Overhead Projectors And Projection Screens (AREA)
JP12037987U 1987-08-07 1987-08-07 Pending JPS6426703U (enrdf_load_stackoverflow)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12037987U JPS6426703U (enrdf_load_stackoverflow) 1987-08-07 1987-08-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12037987U JPS6426703U (enrdf_load_stackoverflow) 1987-08-07 1987-08-07

Publications (1)

Publication Number Publication Date
JPS6426703U true JPS6426703U (enrdf_load_stackoverflow) 1989-02-15

Family

ID=31366433

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12037987U Pending JPS6426703U (enrdf_load_stackoverflow) 1987-08-07 1987-08-07

Country Status (1)

Country Link
JP (1) JPS6426703U (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH047987A (ja) * 1990-04-25 1992-01-13 Pioneer Electron Corp リアプロジェクションテレビの製造方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61129602A (ja) * 1984-11-29 1986-06-17 Nissan Motor Co Ltd フルネルレンズの構造
JPS62118304A (ja) * 1985-11-18 1987-05-29 Asahi Optical Co Ltd フレネル状レンズ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61129602A (ja) * 1984-11-29 1986-06-17 Nissan Motor Co Ltd フルネルレンズの構造
JPS62118304A (ja) * 1985-11-18 1987-05-29 Asahi Optical Co Ltd フレネル状レンズ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH047987A (ja) * 1990-04-25 1992-01-13 Pioneer Electron Corp リアプロジェクションテレビの製造方法

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