EP0837492A2 - High intensity discharge lamp with intermediate pressure xenon fill gas - Google Patents
High intensity discharge lamp with intermediate pressure xenon fill gas Download PDFInfo
- Publication number
- EP0837492A2 EP0837492A2 EP97115546A EP97115546A EP0837492A2 EP 0837492 A2 EP0837492 A2 EP 0837492A2 EP 97115546 A EP97115546 A EP 97115546A EP 97115546 A EP97115546 A EP 97115546A EP 0837492 A2 EP0837492 A2 EP 0837492A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- arc
- lamp
- arc discharge
- electrodes
- discharge tube
- 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.)
- Ceased
Links
Images
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
- H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
-
- 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
- H01J61/822—High-pressure mercury lamps
Landscapes
- Discharge Lamp (AREA)
Abstract
Description
Claims (6)
- A high intensity arc discharge lamp comprising: an outer light transmissive envelope; a light transmissive arc discharge tube positioned within said envelope and having electrodes at opposite ends thereof; means to provide electrical connection to said electrodes; and an arc generating and sustaining medium within said arc tube, said medium comprising a substantial amount of mercury, at least a halide of sodium, and xenon at a fill pressure at room temperature of at least about 130 millibar.
- The lamp of claim 1 wherein said medium includes an amount of scandium metal.
- The lamp of Claim 1 wherein said arc discharge tube comprises fused silica.
- The lamp of Claim 2 wherein said arc discharge tube has a volume of 1.4 cc, said substantial amount of mercury is about 12 mg, said amount of scandium metal is about 0.13 mg, and said halides of sodium and scandium are present in an amount of about 10 mg and in the molar ratio of 24:1.
- The lamp of Claim 4 wherein said halides are iodides.
- The lamp of Claim 1 wherein said arc discharge tube is polycrystallin alumina.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US73095296A | 1996-10-16 | 1996-10-16 | |
US730952 | 1996-10-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0837492A2 true EP0837492A2 (en) | 1998-04-22 |
EP0837492A3 EP0837492A3 (en) | 1998-05-27 |
Family
ID=24937467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97115546A Ceased EP0837492A3 (en) | 1996-10-16 | 1997-09-08 | High intensity discharge lamp with intermediate pressure xenon fill gas |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0837492A3 (en) |
CA (1) | CA2215088A1 (en) |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2147094A1 (en) * | 1971-07-29 | 1973-03-09 | Holobeam | Long-arc gas discharge lamp - contg metal lic vapour besides inert gas, for high light yield |
GB2000637A (en) * | 1977-07-05 | 1979-01-10 | Gen Electric | High pressure metal vapor discharge lamps |
US4179640A (en) * | 1977-12-05 | 1979-12-18 | Westinghouse Electric Corp. | Hid sodium lamp which incorporates a high pressure of xenon and a trigger starting electrode |
US4325004A (en) * | 1980-10-02 | 1982-04-13 | Gte Laboratories Incorporated | Method and apparatus for starting high intensity discharge lamps |
EP0078105A2 (en) * | 1981-10-28 | 1983-05-04 | THORN EMI plc | Improvements in or relating to high pressure sodium lamps |
EP0081918A2 (en) * | 1981-12-11 | 1983-06-22 | THORN EMI plc | High pressure sodium lamps |
EP0110248A2 (en) * | 1982-11-26 | 1984-06-13 | General Electric Company | High pressure sodium lamp having improved efficacy |
EP0183247A2 (en) * | 1984-11-29 | 1986-06-04 | General Electric Company | High pressure metal halide lamp with xenon buffer gas |
US4709184A (en) * | 1984-08-20 | 1987-11-24 | Gte Products Corporation | Low wattage metal halide lamp |
FR2627627A1 (en) * | 1988-02-18 | 1989-08-25 | Gen Electric | HALOGEN-METAL-XENON LAMP SUITABLE PARTICULARLY FOR AUTOMOTIVE APPLICATIONS |
DE3904927A1 (en) * | 1988-02-18 | 1989-08-31 | Gen Electric | METAL HALOGENID LAMP WITH VACUUM SHEATH FOR IMPROVED PERFORMANCE |
US5057743A (en) * | 1988-09-12 | 1991-10-15 | Gte Products Corporation | Metal halide discharge lamp with improved color rendering properties |
US5121034A (en) * | 1989-03-08 | 1992-06-09 | General Electric Company | Acoustic resonance operation of xenon-metal halide lamps |
EP0784334A1 (en) * | 1996-01-11 | 1997-07-16 | Osram Sylvania Inc. | Metal halide lamp |
-
1997
- 1997-09-08 EP EP97115546A patent/EP0837492A3/en not_active Ceased
- 1997-09-11 CA CA 2215088 patent/CA2215088A1/en not_active Abandoned
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2147094A1 (en) * | 1971-07-29 | 1973-03-09 | Holobeam | Long-arc gas discharge lamp - contg metal lic vapour besides inert gas, for high light yield |
GB2000637A (en) * | 1977-07-05 | 1979-01-10 | Gen Electric | High pressure metal vapor discharge lamps |
US4179640A (en) * | 1977-12-05 | 1979-12-18 | Westinghouse Electric Corp. | Hid sodium lamp which incorporates a high pressure of xenon and a trigger starting electrode |
US4325004A (en) * | 1980-10-02 | 1982-04-13 | Gte Laboratories Incorporated | Method and apparatus for starting high intensity discharge lamps |
EP0078105A2 (en) * | 1981-10-28 | 1983-05-04 | THORN EMI plc | Improvements in or relating to high pressure sodium lamps |
EP0081918A2 (en) * | 1981-12-11 | 1983-06-22 | THORN EMI plc | High pressure sodium lamps |
EP0110248A2 (en) * | 1982-11-26 | 1984-06-13 | General Electric Company | High pressure sodium lamp having improved efficacy |
US4709184A (en) * | 1984-08-20 | 1987-11-24 | Gte Products Corporation | Low wattage metal halide lamp |
EP0183247A2 (en) * | 1984-11-29 | 1986-06-04 | General Electric Company | High pressure metal halide lamp with xenon buffer gas |
FR2627627A1 (en) * | 1988-02-18 | 1989-08-25 | Gen Electric | HALOGEN-METAL-XENON LAMP SUITABLE PARTICULARLY FOR AUTOMOTIVE APPLICATIONS |
DE3904927A1 (en) * | 1988-02-18 | 1989-08-31 | Gen Electric | METAL HALOGENID LAMP WITH VACUUM SHEATH FOR IMPROVED PERFORMANCE |
US5057743A (en) * | 1988-09-12 | 1991-10-15 | Gte Products Corporation | Metal halide discharge lamp with improved color rendering properties |
US5121034A (en) * | 1989-03-08 | 1992-06-09 | General Electric Company | Acoustic resonance operation of xenon-metal halide lamps |
EP0784334A1 (en) * | 1996-01-11 | 1997-07-16 | Osram Sylvania Inc. | Metal halide lamp |
Also Published As
Publication number | Publication date |
---|---|
CA2215088A1 (en) | 1998-04-16 |
EP0837492A3 (en) | 1998-05-27 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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STAA | Information on the status of an ep patent application or granted ep patent |
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Effective date: 20061130 |