GB467078A - Improvements in or relating to electric discharge tubes formed of quartz - Google Patents
Improvements in or relating to electric discharge tubes formed of quartzInfo
- Publication number
- GB467078A GB467078A GB8733/37A GB873337A GB467078A GB 467078 A GB467078 A GB 467078A GB 8733/37 A GB8733/37 A GB 8733/37A GB 873337 A GB873337 A GB 873337A GB 467078 A GB467078 A GB 467078A
- Authority
- GB
- United Kingdom
- Prior art keywords
- neon
- mms
- tube
- quartz
- pressure
- 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
- H01J61/12—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
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/34—Double-wall vessels or containers
-
- 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)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
467,078. Discharge lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. March 24, 1937, No. 8733. Convention date, March 27, 1936. Drawings to Specification. [Class 39 (i)] In a discharge tube formed of quartz, which contains neon and acquires a temperature higher than 500‹ C., leakage of neon through the heated quartz is prevented by surrounding the tube with an envelope containing neon. The pressure of the neon may be 5-250 mms., preferably 20-100 mms. A quantity of a further gas, such as nitrogen, which does not penetrate quartz may be introduced into the outer envelope to increase the conduction of heat from the tube. The neon within the tube may contain a small quantity of argon, for example 0À2 per cent, to reduce the starting voltage. An example is described in which a high pressure mercury lamp working at 10 atmospheres is supported within an outer bulb containing a mixture of neon and nitrogen at 500 mms. pressure, the partial pressure of the neon being 60 mms. The tube contains neon at 20 mms. The inner and outer diameters of the quartz tube are 4 and 7À5 mms. respectively, and the self-heated electrodes of tungsten coated with barium oxide are spaced 18 mms. apart.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE467078X | 1936-03-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB467078A true GB467078A (en) | 1937-06-10 |
Family
ID=6540647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8733/37A Expired GB467078A (en) | 1936-03-27 | 1937-03-24 | Improvements in or relating to electric discharge tubes formed of quartz |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2176134A (en) |
| BE (1) | BE420764A (en) |
| FR (1) | FR819753A (en) |
| GB (1) | GB467078A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2774013A (en) * | 1949-04-07 | 1956-12-11 | Gen Electric | Electric discharge lamp |
| US2687486A (en) * | 1952-01-24 | 1954-08-24 | Westinghouse Electric Corp | Gaseous discharge lamp |
| NL7011321A (en) * | 1970-07-31 | 1972-02-02 | ||
| US3883766A (en) * | 1973-07-19 | 1975-05-13 | Gte Sylvania Inc | Method of operating high-intensity arc discharge lamp |
| US4199701A (en) * | 1978-08-10 | 1980-04-22 | General Electric Company | Fill gas for miniature high pressure metal vapor arc lamp |
| JPH0622110B2 (en) * | 1984-02-14 | 1994-03-23 | 株式会社日立製作所 | Discharge lamp |
-
0
- BE BE420764D patent/BE420764A/xx unknown
-
1937
- 1937-03-17 US US131489A patent/US2176134A/en not_active Expired - Lifetime
- 1937-03-24 GB GB8733/37A patent/GB467078A/en not_active Expired
- 1937-03-25 FR FR819753D patent/FR819753A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE420764A (en) | |
| FR819753A (en) | 1937-10-26 |
| US2176134A (en) | 1939-10-17 |
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