GB981666A - Improvements in mercury vapour discharge lamps - Google Patents
Improvements in mercury vapour discharge lampsInfo
- Publication number
- GB981666A GB981666A GB32099/63A GB3209963A GB981666A GB 981666 A GB981666 A GB 981666A GB 32099/63 A GB32099/63 A GB 32099/63A GB 3209963 A GB3209963 A GB 3209963A GB 981666 A GB981666 A GB 981666A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- wire
- conical
- aug
- cone
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/073—Main electrodes for high-pressure discharge lamps
- H01J61/0732—Main electrodes for high-pressure discharge lamps characterised by the construction of the electrode
Landscapes
- Discharge Lamp (AREA)
Abstract
981,666. Metal-vapour lamps. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Aug. 14, 1963 [Aug. 17, 1962], No. 32099/63. Heading H1D. In a high - pressure compact source mercuryvapour discharge lamp comprising two tungsten electrodes 2, 3 having substantially conical ends arranged opposite each other so as to provide a gap a between the electrodes, the conical face 4 of one of the electrodes is formed with a bore in which is located a thoriated tungsten wire 5, the outer end of the wire being spaced from the tip of the cone by a distance b which is smaller than four times and larger than twice the gap a between the electrodes. The diameter of the bore is preferably smaller than a fifth of the maximum diameter of the conical end portion of the electrode and the wire 5 may project from the conical surface 4 by a distance of not more than one-twentieth of the said maximum diameter. Grooves 6 are provided in the electrode 3 to reduce heat conduction. In operation the arc starts at the wire 5 and then transfers to the tip of the cone.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL282235 | 1962-08-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB981666A true GB981666A (en) | 1965-01-27 |
Family
ID=19754051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32099/63A Expired GB981666A (en) | 1962-08-17 | 1963-08-14 | Improvements in mercury vapour discharge lamps |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3303377A (en) |
| AT (1) | AT239919B (en) |
| BE (1) | BE636192A (en) |
| DE (1) | DE1275686B (en) |
| DK (1) | DK103899C (en) |
| GB (1) | GB981666A (en) |
| NL (1) | NL282235A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3548242A (en) * | 1967-05-16 | 1970-12-15 | Sylvania Electric Prod | High pressure electric discharge device and cathode |
| AT300121B (en) * | 1968-11-22 | 1972-07-10 | Egyesuelt Izzolampa | Process for producing discharge lamps without suction tubes |
| DE19749908A1 (en) | 1997-11-11 | 1999-05-12 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Electrode component for discharge lamps |
| DE19757152C2 (en) | 1997-12-20 | 2002-10-31 | Thomas Eggers | Electrode for discharge lamps |
| JP2000306546A (en) * | 1999-04-21 | 2000-11-02 | Ushio Inc | Short arc discharge lamp |
| US7176632B2 (en) * | 2005-03-15 | 2007-02-13 | Osram Sylvania Inc. | Slotted electrode for high intensity discharge lamp |
| JP5009062B2 (en) * | 2007-06-22 | 2012-08-22 | 株式会社オーク製作所 | Electrode structure for discharge lamp |
| US8610350B2 (en) * | 2009-12-15 | 2013-12-17 | Osram Gesellschaft Mit Beschraenkter Haftung | Electrode structures for discharge lamps |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB462806A (en) * | 1935-10-09 | 1937-03-16 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Improvements in high-pressure metal-vapour electric discharge devices |
| GB486502A (en) * | 1936-12-01 | 1938-06-01 | Paul Freedman | Improvements in and relating to metallic vapour discharge lamps |
| DE733986C (en) * | 1940-07-20 | 1943-04-07 | Patra Patent Treuhand | Electric overpressure discharge lamp |
| DE761839C (en) * | 1941-08-09 | 1954-10-11 | Patra Patent Treuhand | Electric rectifier tubes, especially for high voltages |
| US2459579A (en) * | 1947-08-06 | 1949-01-18 | Gen Electric | Electrode structure |
| GB677551A (en) * | 1949-10-17 | 1952-08-20 | Gen Electric Co Ltd | Improvements in or relating to electric discharge lamps |
| DE1828465U (en) * | 1959-07-08 | 1961-03-23 | Patra Patent Treuhand | ELECTRODE FOR ELECTRIC HIGH PRESSURE DISCHARGE LAMPS. |
-
0
- BE BE636192D patent/BE636192A/xx unknown
- NL NL282235D patent/NL282235A/xx unknown
-
1963
- 1963-07-30 US US298651A patent/US3303377A/en not_active Expired - Lifetime
- 1963-08-13 DE DEN23600A patent/DE1275686B/en not_active Withdrawn
- 1963-08-14 AT AT654463A patent/AT239919B/en active
- 1963-08-14 GB GB32099/63A patent/GB981666A/en not_active Expired
- 1963-08-14 DK DK388163AA patent/DK103899C/en active
Also Published As
| Publication number | Publication date |
|---|---|
| US3303377A (en) | 1967-02-07 |
| DK103899C (en) | 1966-03-07 |
| AT239919B (en) | 1965-05-10 |
| BE636192A (en) | |
| NL282235A (en) | |
| DE1275686B (en) | 1968-08-22 |
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