JPS5553866A - Metal halide lamp - Google Patents
Metal halide lampInfo
- Publication number
- JPS5553866A JPS5553866A JP12720578A JP12720578A JPS5553866A JP S5553866 A JPS5553866 A JP S5553866A JP 12720578 A JP12720578 A JP 12720578A JP 12720578 A JP12720578 A JP 12720578A JP S5553866 A JPS5553866 A JP S5553866A
- Authority
- JP
- Japan
- Prior art keywords
- oxcide
- electrode core
- tungsten
- core
- metal halide
- 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)
Abstract
PURPOSE: To lower the starting voltage and to improve the flux maintaining rate, by employing the cross section of electrode core for specific steady state lamp current while containing specific amount of thorium oxcide.
CONSTITUTION: Main electrode 3 is containing 0.1W3.0wt% of throrium oxcide while comprised of tungsten electrode core 9 having 0.1W3.0mm2/A of corss-section for steady state lamp current and tungsten coil 10 mounted on said electrode core 9 and having 0.2W2.0wt ratio against the core. Consequently thorium oxcide contained in the electrode core 9 is stable in metal halide vacuum in the light emitting tube thereby starting voltage is lowered, while spattering of tungsten is reduced resulting in the improvement of flux maintaining rate.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12720578A JPS5553866A (en) | 1978-10-16 | 1978-10-16 | Metal halide lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12720578A JPS5553866A (en) | 1978-10-16 | 1978-10-16 | Metal halide lamp |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5553866A true JPS5553866A (en) | 1980-04-19 |
JPS6329382B2 JPS6329382B2 (en) | 1988-06-13 |
Family
ID=14954311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12720578A Granted JPS5553866A (en) | 1978-10-16 | 1978-10-16 | Metal halide lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5553866A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6037648A (en) * | 1983-08-10 | 1985-02-27 | 東芝ライテック株式会社 | Metal halide lamp |
-
1978
- 1978-10-16 JP JP12720578A patent/JPS5553866A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6037648A (en) * | 1983-08-10 | 1985-02-27 | 東芝ライテック株式会社 | Metal halide lamp |
Also Published As
Publication number | Publication date |
---|---|
JPS6329382B2 (en) | 1988-06-13 |
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