JPS6450358A - Extra-high pressure mercury lamp - Google Patents
Extra-high pressure mercury lampInfo
- Publication number
- JPS6450358A JPS6450358A JP20628187A JP20628187A JPS6450358A JP S6450358 A JPS6450358 A JP S6450358A JP 20628187 A JP20628187 A JP 20628187A JP 20628187 A JP20628187 A JP 20628187A JP S6450358 A JPS6450358 A JP S6450358A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- tip
- diameter
- electron emitting
- emitting side
- 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.)
- Granted
Links
Landscapes
- Discharge Lamp (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
PURPOSE:To obtain an extra-high pressure mercury lamp which is small in deterioration of an electrode, in particular, electrode on the electron emitting side and long in life by setting electrode diameter of an electron emitting side electrode, radius of curvature of its electrode tip, electrode diameter of an opposed electrode and its electrode tip diameter in the specific relation with each other, and specifying current load factors of the electron emitting side electrode, the electrode tip and the tip electrode of opposed electrode, respectively. CONSTITUTION:Provided that the electrode diameter of an electron emitting side electrode is c, the radius of curvature of its tip electrode is r, the electrode diameter of an opposed electrode is d and the diameter of its tip electrode is e, they are set in the relation of 1.5.c<=d<=3.c, c/2<=e<=c, d/4<=e<=d/2. Further, provided that load current which flows between these opposed electrodes is I, the current load factor of the electron emitting side electrode is je1, the current load factor of its electrode tip is je2, and the current load factor of the tip electrode of the opposed electrode is je3, they are set in the relation of je1=I/pid<4>/4<=3X10<2>A/cm<2>, je2=I/pir<2=2X10<4>A/cm<2>, je3=I/piA<2>/4<=1X10<3>A/cm2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62206281A JP2781555B2 (en) | 1987-08-21 | 1987-08-21 | Ultra high pressure mercury lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62206281A JP2781555B2 (en) | 1987-08-21 | 1987-08-21 | Ultra high pressure mercury lamp |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6450358A true JPS6450358A (en) | 1989-02-27 |
JP2781555B2 JP2781555B2 (en) | 1998-07-30 |
Family
ID=16520715
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62206281A Expired - Fee Related JP2781555B2 (en) | 1987-08-21 | 1987-08-21 | Ultra high pressure mercury lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2781555B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003514351A (en) * | 1999-11-11 | 2003-04-15 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | High pressure discharge lamp |
WO2009121400A1 (en) * | 2008-04-01 | 2009-10-08 | Osram Gesellschaft mit beschränkter Haftung | Method for producing a high-pressure discharge lamp, method for producing light using a high-pressure discharge lamp and digital video projector |
JP2011086605A (en) * | 2009-09-15 | 2011-04-28 | Ushio Inc | Short arc type discharge lamp |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49119481A (en) * | 1973-03-16 | 1974-11-14 | ||
JPS50110576U (en) * | 1974-02-18 | 1975-09-09 | ||
JPS54108478A (en) * | 1978-02-14 | 1979-08-25 | Ushio Electric Inc | Printing or transcribing method of semiconductor and discharge lamp suitable for printing or transcription |
-
1987
- 1987-08-21 JP JP62206281A patent/JP2781555B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49119481A (en) * | 1973-03-16 | 1974-11-14 | ||
JPS50110576U (en) * | 1974-02-18 | 1975-09-09 | ||
JPS54108478A (en) * | 1978-02-14 | 1979-08-25 | Ushio Electric Inc | Printing or transcribing method of semiconductor and discharge lamp suitable for printing or transcription |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003514351A (en) * | 1999-11-11 | 2003-04-15 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | High pressure discharge lamp |
WO2009121400A1 (en) * | 2008-04-01 | 2009-10-08 | Osram Gesellschaft mit beschränkter Haftung | Method for producing a high-pressure discharge lamp, method for producing light using a high-pressure discharge lamp and digital video projector |
JP2011517018A (en) * | 2008-04-01 | 2011-05-26 | オスラム ゲゼルシャフト ミット ベシュレンクテル ハフツング | Method for manufacturing a high-pressure discharge lamp, method for supplying light by a high-pressure discharge lamp, and digital video projector |
JP2011086605A (en) * | 2009-09-15 | 2011-04-28 | Ushio Inc | Short arc type discharge lamp |
Also Published As
Publication number | Publication date |
---|---|
JP2781555B2 (en) | 1998-07-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |