JPH0380481U - - Google Patents
Info
- Publication number
- JPH0380481U JPH0380481U JP6996290U JP6996290U JPH0380481U JP H0380481 U JPH0380481 U JP H0380481U JP 6996290 U JP6996290 U JP 6996290U JP 6996290 U JP6996290 U JP 6996290U JP H0380481 U JPH0380481 U JP H0380481U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- light source
- power
- discharge lamp
- supply circuit
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6996290U JPH0380481U (es) | 1989-08-19 | 1990-06-29 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9700989 | 1989-08-19 | ||
JP6996290U JPH0380481U (es) | 1989-08-19 | 1990-06-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0380481U true JPH0380481U (es) | 1991-08-19 |
Family
ID=31890155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6996290U Pending JPH0380481U (es) | 1989-08-19 | 1990-06-29 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0380481U (es) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999044097A1 (fr) * | 1998-02-26 | 1999-09-02 | Seiko Epson Corporation | Appareil de presentation par projection |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02191934A (ja) * | 1988-10-31 | 1990-07-27 | Dainippon Screen Mfg Co Ltd | 露光装置の光源劣化防止方法および装置 |
-
1990
- 1990-06-29 JP JP6996290U patent/JPH0380481U/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02191934A (ja) * | 1988-10-31 | 1990-07-27 | Dainippon Screen Mfg Co Ltd | 露光装置の光源劣化防止方法および装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999044097A1 (fr) * | 1998-02-26 | 1999-09-02 | Seiko Epson Corporation | Appareil de presentation par projection |
US6448715B1 (en) | 1998-02-26 | 2002-09-10 | Seiko Epson Corporation | Projection display apparatus |
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