GB1502612A - Discharge lamps containing an inert gas and a metal halid - Google Patents
Discharge lamps containing an inert gas and a metal halidInfo
- Publication number
- GB1502612A GB1502612A GB25471/74A GB2547174A GB1502612A GB 1502612 A GB1502612 A GB 1502612A GB 25471/74 A GB25471/74 A GB 25471/74A GB 2547174 A GB2547174 A GB 2547174A GB 1502612 A GB1502612 A GB 1502612A
- Authority
- GB
- United Kingdom
- Prior art keywords
- halide
- june
- tube
- metal
- inert gas
- 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.)
- Expired
Links
- 239000002184 metal Substances 0.000 title abstract 2
- 229910052751 metal Inorganic materials 0.000 title abstract 2
- 125000005843 halogen group Chemical group 0.000 title 1
- 239000011261 inert gas Substances 0.000 title 1
- 150000004820 halides Chemical class 0.000 abstract 2
- 229910001507 metal halide Inorganic materials 0.000 abstract 2
- 150000005309 metal halides Chemical class 0.000 abstract 2
- 229910052793 cadmium Inorganic materials 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 229910052733 gallium Inorganic materials 0.000 abstract 1
- 229910052738 indium Inorganic materials 0.000 abstract 1
- 229910052745 lead Inorganic materials 0.000 abstract 1
- 229910052744 lithium Inorganic materials 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 239000010453 quartz Substances 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 229910052716 thallium Inorganic materials 0.000 abstract 1
- 229910052718 tin Inorganic materials 0.000 abstract 1
- 229910052725 zinc Inorganic materials 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
- H01J61/827—Metal halide arc lamps
Landscapes
- Discharge Lamp (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
1502612 Metal vapour lamps THORN ELECTRICAL INDUSTRIES Ltd 9 June 1975 [7 June 1974] 25471/74 Heading H1D To maintain arc stability with no or minimal ballast in a discharge lamp filled with Xe and/or Kr at 300-500 Torr cold-fill pressure plus a metal halide, the current density is made to exceed 16 ma./mm.<SP>2</SP>, based on the cross-section of the tube, by sufficient margin to cause the differential resistance dV/dI to become positive. The metal halide added in excess as the compound or elements is preferably a halide of any of Na, Li, Cd, Zn, Mn, In, Tl, Ga, Sn, Pb. In the Figure relating to a tube of 4 mm. bore, the transaction to positive slope occurs at 1A or 80 mA/mm.<SP>2</SP> with Xe and the halide indicated against the respective V-I curve. Luminous efficiences up to 125 L/W are attainable. The lamps are tubular, of quartz with pure or thoriated W electrodes (Fig. 2, not shown).
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB25471/74A GB1502612A (en) | 1974-06-07 | 1974-06-07 | Discharge lamps containing an inert gas and a metal halid |
| AU81853/75A AU501780B2 (en) | 1974-06-07 | 1975-06-04 | Discharge lamps containing an inert gas anda metal halide |
| NL7506708A NL7506708A (en) | 1974-06-07 | 1975-06-05 | DISCHARGE LAMP WITH AN INERT GAS AND A METAL HALOGENIDE. |
| IT24098/75A IT1038753B (en) | 1974-06-07 | 1975-06-06 | ELECTRIC GAS DISCHARGE BULB |
| CA228,708A CA1037097A (en) | 1974-06-07 | 1975-06-06 | Discharge lamps containing an inert gas and a metal halide |
| JP50067687A JPS5110682A (en) | 1974-06-07 | 1975-06-06 | |
| ZA00753665A ZA753665B (en) | 1974-06-07 | 1975-06-06 | Discharge lamps containing an inert gas and a metal halide |
| DE2525408A DE2525408C3 (en) | 1974-06-07 | 1975-06-06 | High pressure noble gas discharge lamp |
| FR7517960A FR2274139A1 (en) | 1974-06-07 | 1975-06-09 | DISCHARGE LAMP CONTAINING AN INERT GAS AND A METAL HALOGENIDE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB25471/74A GB1502612A (en) | 1974-06-07 | 1974-06-07 | Discharge lamps containing an inert gas and a metal halid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1502612A true GB1502612A (en) | 1978-03-01 |
Family
ID=10228252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25471/74A Expired GB1502612A (en) | 1974-06-07 | 1974-06-07 | Discharge lamps containing an inert gas and a metal halid |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5110682A (en) |
| AU (1) | AU501780B2 (en) |
| CA (1) | CA1037097A (en) |
| DE (1) | DE2525408C3 (en) |
| FR (1) | FR2274139A1 (en) |
| GB (1) | GB1502612A (en) |
| IT (1) | IT1038753B (en) |
| NL (1) | NL7506708A (en) |
| ZA (1) | ZA753665B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1032010A4 (en) * | 1998-09-16 | 2001-11-28 | Matsushita Electric Industrial Co Ltd | Anhydrous silver halide lamp |
| US6653801B1 (en) | 1979-11-06 | 2003-11-25 | Matsushita Electric Industrial Co., Ltd. | Mercury-free metal-halide lamp |
| WO2006068887A3 (en) * | 2004-12-20 | 2007-05-24 | Gen Electric | Mercury-free and sodium-free compositions and radiation sources incorporating same |
| US7825598B2 (en) | 2004-12-20 | 2010-11-02 | General Electric Company | Mercury-free discharge compositions and lamps incorporating Titanium, Zirconium, and Hafnium |
| US7928669B2 (en) | 2008-02-08 | 2011-04-19 | General Electric Company | Color control of a discharge lamp during dimming |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5691368A (en) * | 1979-12-24 | 1981-07-24 | Toshiba Corp | Metal halide lamp |
| US4783615A (en) * | 1985-06-26 | 1988-11-08 | General Electric Company | Electrodeless high pressure sodium iodide arc lamp |
| US6340869B1 (en) | 1997-08-05 | 2002-01-22 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Method for operating direct current metal halogen arc lamp circuit pertaining thereto |
-
1974
- 1974-06-07 GB GB25471/74A patent/GB1502612A/en not_active Expired
-
1975
- 1975-06-04 AU AU81853/75A patent/AU501780B2/en not_active Expired
- 1975-06-05 NL NL7506708A patent/NL7506708A/en not_active Application Discontinuation
- 1975-06-06 DE DE2525408A patent/DE2525408C3/en not_active Expired
- 1975-06-06 CA CA228,708A patent/CA1037097A/en not_active Expired
- 1975-06-06 ZA ZA00753665A patent/ZA753665B/en unknown
- 1975-06-06 JP JP50067687A patent/JPS5110682A/ja active Pending
- 1975-06-06 IT IT24098/75A patent/IT1038753B/en active
- 1975-06-09 FR FR7517960A patent/FR2274139A1/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6653801B1 (en) | 1979-11-06 | 2003-11-25 | Matsushita Electric Industrial Co., Ltd. | Mercury-free metal-halide lamp |
| EP1032010A4 (en) * | 1998-09-16 | 2001-11-28 | Matsushita Electric Industrial Co Ltd | Anhydrous silver halide lamp |
| WO2006068887A3 (en) * | 2004-12-20 | 2007-05-24 | Gen Electric | Mercury-free and sodium-free compositions and radiation sources incorporating same |
| US7825598B2 (en) | 2004-12-20 | 2010-11-02 | General Electric Company | Mercury-free discharge compositions and lamps incorporating Titanium, Zirconium, and Hafnium |
| US7847484B2 (en) | 2004-12-20 | 2010-12-07 | General Electric Company | Mercury-free and sodium-free compositions and radiation source incorporating same |
| US7928669B2 (en) | 2008-02-08 | 2011-04-19 | General Electric Company | Color control of a discharge lamp during dimming |
Also Published As
| Publication number | Publication date |
|---|---|
| AU8185375A (en) | 1976-12-09 |
| DE2525408B2 (en) | 1979-06-21 |
| AU501780B2 (en) | 1979-06-28 |
| CA1037097A (en) | 1978-08-22 |
| DE2525408A1 (en) | 1975-12-18 |
| NL7506708A (en) | 1975-12-09 |
| DE2525408C3 (en) | 1980-02-28 |
| ZA753665B (en) | 1976-05-26 |
| FR2274139B1 (en) | 1979-06-22 |
| FR2274139A1 (en) | 1976-01-02 |
| JPS5110682A (en) | 1976-01-28 |
| IT1038753B (en) | 1979-11-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |