JPS54102070A - Metal vapor discharge lamp - Google Patents
Metal vapor discharge lampInfo
- Publication number
- JPS54102070A JPS54102070A JP904878A JP904878A JPS54102070A JP S54102070 A JPS54102070 A JP S54102070A JP 904878 A JP904878 A JP 904878A JP 904878 A JP904878 A JP 904878A JP S54102070 A JPS54102070 A JP S54102070A
- Authority
- JP
- Japan
- Prior art keywords
- halide
- lamp
- scandium
- cerium
- sodium
- 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
Landscapes
- Discharge Lamp (AREA)
Abstract
PURPOSE: To provide the subject lamp wherein scandium halide, sodium halide, and cerium halide are sealed in a luminous tube together with mercury and a starting rare gas in a specific ratio, thereby to improve the luminous efficiency of the lamp.
CONSTITUTION: In a luminous tube 1 there are sealed 7 to 80 molar % of scandium halide, 20 to 90 molar % of sodium halide and 4 to 50 % of cerium halide together with mercury and a starting rare gas. According to this procedure, by the formation of an eutectic mixture of the above described three members of halides its vapor pressure is increased thereby to increase the atomic densities of scandium, sodium and cerium in the arc and improve the luminous efficiency of the lamp.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP904878A JPS54102070A (en) | 1978-01-30 | 1978-01-30 | Metal vapor discharge lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP904878A JPS54102070A (en) | 1978-01-30 | 1978-01-30 | Metal vapor discharge lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54102070A true JPS54102070A (en) | 1979-08-11 |
Family
ID=11709745
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP904878A Pending JPS54102070A (en) | 1978-01-30 | 1978-01-30 | Metal vapor discharge lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54102070A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5532355A (en) * | 1978-08-30 | 1980-03-07 | Japan Storage Battery Co Ltd | Metal halide lamp |
US4422011A (en) * | 1980-10-02 | 1983-12-20 | U.S. Philips Corporation | High-pressure mercury vapor discharge lamp |
EP0603014A1 (en) * | 1992-12-18 | 1994-06-22 | Flowil International Lighting (Holding) B.V. | Electrodeless lamp bulb |
EP1271614A1 (en) * | 2001-06-27 | 2003-01-02 | Matsushita Electric Industrial Co., Ltd. | Metal Halide Lamp |
US6707252B2 (en) | 2001-06-29 | 2004-03-16 | Matsushita Electric Industrial Co., Ltd. | Metal halide lamp |
US6756721B2 (en) | 2001-06-28 | 2004-06-29 | Matsushita Electric Industrial Co., Ltd. | Metal halide lamp |
US7786674B2 (en) | 2004-11-03 | 2010-08-31 | Koninklijke Philips Electronics N.V. | Quartz metal halide lamp with improved lumen maintenance |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5144740A (en) * | 1974-10-15 | 1976-04-16 | Kawasaki Heavy Ind Ltd | 2 saikuruenjinno junkatsusochi |
-
1978
- 1978-01-30 JP JP904878A patent/JPS54102070A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5144740A (en) * | 1974-10-15 | 1976-04-16 | Kawasaki Heavy Ind Ltd | 2 saikuruenjinno junkatsusochi |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5532355A (en) * | 1978-08-30 | 1980-03-07 | Japan Storage Battery Co Ltd | Metal halide lamp |
US4422011A (en) * | 1980-10-02 | 1983-12-20 | U.S. Philips Corporation | High-pressure mercury vapor discharge lamp |
EP0603014A1 (en) * | 1992-12-18 | 1994-06-22 | Flowil International Lighting (Holding) B.V. | Electrodeless lamp bulb |
EP1271614A1 (en) * | 2001-06-27 | 2003-01-02 | Matsushita Electric Industrial Co., Ltd. | Metal Halide Lamp |
US7061182B2 (en) | 2001-06-27 | 2006-06-13 | Matsushita Electric Industrial Co., Ltd. | Metal halide lamp |
US6756721B2 (en) | 2001-06-28 | 2004-06-29 | Matsushita Electric Industrial Co., Ltd. | Metal halide lamp |
US6707252B2 (en) | 2001-06-29 | 2004-03-16 | Matsushita Electric Industrial Co., Ltd. | Metal halide lamp |
US7786674B2 (en) | 2004-11-03 | 2010-08-31 | Koninklijke Philips Electronics N.V. | Quartz metal halide lamp with improved lumen maintenance |
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