JPH0329801U - - Google Patents

Info

Publication number
JPH0329801U
JPH0329801U JP8806289U JP8806289U JPH0329801U JP H0329801 U JPH0329801 U JP H0329801U JP 8806289 U JP8806289 U JP 8806289U JP 8806289 U JP8806289 U JP 8806289U JP H0329801 U JPH0329801 U JP H0329801U
Authority
JP
Japan
Prior art keywords
fresnel lens
reflective surface
constructed
utility
forming
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
JP8806289U
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 JP8806289U priority Critical patent/JPH0329801U/ja
Publication of JPH0329801U publication Critical patent/JPH0329801U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Overhead Projectors And Projection Screens (AREA)
  • Optical Elements Other Than Lenses (AREA)
JP8806289U 1989-07-28 1989-07-28 Pending JPH0329801U (US20030204162A1-20031030-M00001.png)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8806289U JPH0329801U (US20030204162A1-20031030-M00001.png) 1989-07-28 1989-07-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8806289U JPH0329801U (US20030204162A1-20031030-M00001.png) 1989-07-28 1989-07-28

Publications (1)

Publication Number Publication Date
JPH0329801U true JPH0329801U (US20030204162A1-20031030-M00001.png) 1991-03-25

Family

ID=31637695

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8806289U Pending JPH0329801U (US20030204162A1-20031030-M00001.png) 1989-07-28 1989-07-28

Country Status (1)

Country Link
JP (1) JPH0329801U (US20030204162A1-20031030-M00001.png)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6024501A (ja) * 1983-07-20 1985-02-07 Mitsubishi Electric Corp 反射板の製造方法
JPS61248001A (ja) * 1985-04-26 1986-11-05 Toshiba Corp グレ−デイングレンズ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6024501A (ja) * 1983-07-20 1985-02-07 Mitsubishi Electric Corp 反射板の製造方法
JPS61248001A (ja) * 1985-04-26 1986-11-05 Toshiba Corp グレ−デイングレンズ

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