JPH0416483U - - Google Patents

Info

Publication number
JPH0416483U
JPH0416483U JP5798190U JP5798190U JPH0416483U JP H0416483 U JPH0416483 U JP H0416483U JP 5798190 U JP5798190 U JP 5798190U JP 5798190 U JP5798190 U JP 5798190U JP H0416483 U JPH0416483 U JP H0416483U
Authority
JP
Japan
Prior art keywords
light source
projection light
detection means
illuminance
illuminance detection
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
JP5798190U
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 JP5798190U priority Critical patent/JPH0416483U/ja
Publication of JPH0416483U publication Critical patent/JPH0416483U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
JP5798190U 1990-05-31 1990-05-31 Pending JPH0416483U (enrdf_load_stackoverflow)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5798190U JPH0416483U (enrdf_load_stackoverflow) 1990-05-31 1990-05-31

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5798190U JPH0416483U (enrdf_load_stackoverflow) 1990-05-31 1990-05-31

Publications (1)

Publication Number Publication Date
JPH0416483U true JPH0416483U (enrdf_load_stackoverflow) 1992-02-10

Family

ID=31583182

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5798190U Pending JPH0416483U (enrdf_load_stackoverflow) 1990-05-31 1990-05-31

Country Status (1)

Country Link
JP (1) JPH0416483U (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010223977A (ja) * 2009-03-19 2010-10-07 Seiko Epson Corp プロジェクター及びプロジェクターの光源の点灯方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61216298A (ja) * 1985-03-22 1986-09-25 キヤノン株式会社 光源ランプの寿命判定装置
JPS62150237A (ja) * 1985-12-24 1987-07-04 Canon Inc 画像投影装置
JPH02257193A (ja) * 1989-03-30 1990-10-17 Seiko Epson Corp 投射型表示装置
JPH02257192A (ja) * 1989-03-30 1990-10-17 Seiko Epson Corp 投射型表示装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61216298A (ja) * 1985-03-22 1986-09-25 キヤノン株式会社 光源ランプの寿命判定装置
JPS62150237A (ja) * 1985-12-24 1987-07-04 Canon Inc 画像投影装置
JPH02257193A (ja) * 1989-03-30 1990-10-17 Seiko Epson Corp 投射型表示装置
JPH02257192A (ja) * 1989-03-30 1990-10-17 Seiko Epson Corp 投射型表示装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010223977A (ja) * 2009-03-19 2010-10-07 Seiko Epson Corp プロジェクター及びプロジェクターの光源の点灯方法

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