JPH019948Y2 - - Google Patents

Info

Publication number
JPH019948Y2
JPH019948Y2 JP1979155263U JP15526379U JPH019948Y2 JP H019948 Y2 JPH019948 Y2 JP H019948Y2 JP 1979155263 U JP1979155263 U JP 1979155263U JP 15526379 U JP15526379 U JP 15526379U JP H019948 Y2 JPH019948 Y2 JP H019948Y2
Authority
JP
Japan
Prior art keywords
fresnel lens
linear fresnel
sheets
lens sheet
lens
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
JP1979155263U
Other languages
English (en)
Japanese (ja)
Other versions
JPS5674430U (en:Method
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 JP1979155263U priority Critical patent/JPH019948Y2/ja
Publication of JPS5674430U publication Critical patent/JPS5674430U/ja
Application granted granted Critical
Publication of JPH019948Y2 publication Critical patent/JPH019948Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Overhead Projectors And Projection Screens (AREA)
  • Transforming Electric Information Into Light Information (AREA)
JP1979155263U 1979-11-08 1979-11-08 Expired JPH019948Y2 (en:Method)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1979155263U JPH019948Y2 (en:Method) 1979-11-08 1979-11-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1979155263U JPH019948Y2 (en:Method) 1979-11-08 1979-11-08

Publications (2)

Publication Number Publication Date
JPS5674430U JPS5674430U (en:Method) 1981-06-18
JPH019948Y2 true JPH019948Y2 (en:Method) 1989-03-20

Family

ID=29667303

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1979155263U Expired JPH019948Y2 (en:Method) 1979-11-08 1979-11-08

Country Status (1)

Country Link
JP (1) JPH019948Y2 (en:Method)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5251538U (en:Method) * 1975-10-09 1977-04-13
JPS52124748U (en:Method) * 1976-03-18 1977-09-22
JPS53142230A (en) * 1977-05-18 1978-12-11 Dainippon Printing Co Ltd Transmission type screen

Also Published As

Publication number Publication date
JPS5674430U (en:Method) 1981-06-18

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