JPH0233231Y2 - - Google Patents

Info

Publication number
JPH0233231Y2
JPH0233231Y2 JP1979155264U JP15526479U JPH0233231Y2 JP H0233231 Y2 JPH0233231 Y2 JP H0233231Y2 JP 1979155264 U JP1979155264 U JP 1979155264U JP 15526479 U JP15526479 U JP 15526479U JP H0233231 Y2 JPH0233231 Y2 JP H0233231Y2
Authority
JP
Japan
Prior art keywords
screen
light
fresnel lens
linear 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.)
Expired
Application number
JP1979155264U
Other languages
English (en)
Japanese (ja)
Other versions
JPS5674431U (en]
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 JP1979155264U priority Critical patent/JPH0233231Y2/ja
Publication of JPS5674431U publication Critical patent/JPS5674431U/ja
Application granted granted Critical
Publication of JPH0233231Y2 publication Critical patent/JPH0233231Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Overhead Projectors And Projection Screens (AREA)
  • Transforming Electric Information Into Light Information (AREA)
JP1979155264U 1979-11-08 1979-11-08 Expired JPH0233231Y2 (en])

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1979155264U JPH0233231Y2 (en]) 1979-11-08 1979-11-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1979155264U JPH0233231Y2 (en]) 1979-11-08 1979-11-08

Publications (2)

Publication Number Publication Date
JPS5674431U JPS5674431U (en]) 1981-06-18
JPH0233231Y2 true JPH0233231Y2 (en]) 1990-09-07

Family

ID=29667304

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1979155264U Expired JPH0233231Y2 (en]) 1979-11-08 1979-11-08

Country Status (1)

Country Link
JP (1) JPH0233231Y2 (en])

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0614217Y2 (ja) * 1987-04-16 1994-04-13 シャープ株式会社 透過型プロジエクタ
JPH055749Y2 (en]) * 1988-09-30 1993-02-15
JP2939207B2 (ja) * 1996-08-16 1999-08-25 大日本印刷株式会社 レンチキュラーレンズシート、ディスプレイ用前面板及び透過型スクリーン

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE792745A (fr) * 1971-12-15 1973-03-30 Freen Ltd Ecran pour projection par transparence
JPS5189419A (en]) * 1975-02-03 1976-08-05
JPS5273031A (en) * 1975-12-13 1977-06-18 Tokyo Purasuchitsuku Renzu Kk Transmission type screen

Also Published As

Publication number Publication date
JPS5674431U (en]) 1981-06-18

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