JPS63165638U - - Google Patents

Info

Publication number
JPS63165638U
JPS63165638U JP1987058980U JP5898087U JPS63165638U JP S63165638 U JPS63165638 U JP S63165638U JP 1987058980 U JP1987058980 U JP 1987058980U JP 5898087 U JP5898087 U JP 5898087U JP S63165638 U JPS63165638 U JP S63165638U
Authority
JP
Japan
Prior art keywords
projector
transmittance
fresnel lens
changing means
screen
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
JP1987058980U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0522929Y2 (US07655688-20100202-C00086.png
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 JP1987058980U priority Critical patent/JPH0522929Y2/ja
Publication of JPS63165638U publication Critical patent/JPS63165638U/ja
Application granted granted Critical
Publication of JPH0522929Y2 publication Critical patent/JPH0522929Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Overhead Projectors And Projection Screens (AREA)
JP1987058980U 1987-04-17 1987-04-17 Expired - Lifetime JPH0522929Y2 (US07655688-20100202-C00086.png)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987058980U JPH0522929Y2 (US07655688-20100202-C00086.png) 1987-04-17 1987-04-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987058980U JPH0522929Y2 (US07655688-20100202-C00086.png) 1987-04-17 1987-04-17

Publications (2)

Publication Number Publication Date
JPS63165638U true JPS63165638U (US07655688-20100202-C00086.png) 1988-10-28
JPH0522929Y2 JPH0522929Y2 (US07655688-20100202-C00086.png) 1993-06-11

Family

ID=30890048

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987058980U Expired - Lifetime JPH0522929Y2 (US07655688-20100202-C00086.png) 1987-04-17 1987-04-17

Country Status (1)

Country Link
JP (1) JPH0522929Y2 (US07655688-20100202-C00086.png)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008083687A (ja) * 2006-08-28 2008-04-10 Seiko Epson Corp スクリーン、及びプロジェクタ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008083687A (ja) * 2006-08-28 2008-04-10 Seiko Epson Corp スクリーン、及びプロジェクタ

Also Published As

Publication number Publication date
JPH0522929Y2 (US07655688-20100202-C00086.png) 1993-06-11

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