GB497811A - Improvements in electric discharge lamps - Google Patents
Improvements in electric discharge lampsInfo
- Publication number
- GB497811A GB497811A GB2613737A GB2613737A GB497811A GB 497811 A GB497811 A GB 497811A GB 2613737 A GB2613737 A GB 2613737A GB 2613737 A GB2613737 A GB 2613737A GB 497811 A GB497811 A GB 497811A
- Authority
- GB
- United Kingdom
- Prior art keywords
- neon
- mercury
- lamps
- krypton
- mms
- 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
- H01J61/16—Selection of substances for gas fillings; Specified operating pressure or temperature having helium, argon, neon, krypton, or xenon as the principle constituent
Abstract
497,811. Discharge lamps. GENERAL ELECTRIC CO., Ltd. (Patent-Treuhand-Ges. f³r Elektrische Gl³hlampen) Sept. 27, 1937. Nos. 26137 and 26261. [Class 39 (i)] A characteristic having a positive or only slightly negative portion is obtained in a cold electrode lamp with a filling mainly of neon at 4-8 mms. pressure by adding to the neon 0À2-0À9 per cent of krypton or xenon or a mixture of these gases. Low pressures of other gases, particularly mercury, may be present. The electrodes are both cold and consist of hollow cylinders of sheet iron. Dimensions and running data are given of lamps with fillings of mercury and 6 mms. neon and 0À5 per cent krypton or xenon, and 6 mms. neon and 0À2 per cent krypton or xenon without mercury. Luminescent material may be provided within the lamps and mercury may be contained in an electrode to be kept warm by the discharge. The lamps preferably work on D.C. with suitable precautions against electrophoresis ; on A.C. auxiliary starting devices are necessary. Specifications 363,343 and 476,240 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2613737A GB497811A (en) | 1937-09-27 | 1937-09-27 | Improvements in electric discharge lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2613737A GB497811A (en) | 1937-09-27 | 1937-09-27 | Improvements in electric discharge lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB497811A true GB497811A (en) | 1938-12-29 |
Family
ID=10238979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2613737A Expired GB497811A (en) | 1937-09-27 | 1937-09-27 | Improvements in electric discharge lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB497811A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0083241A2 (en) * | 1981-12-26 | 1983-07-06 | Mitsubishi Denki Kabushiki Kaisha | A low pressure inert gas discharge lamp |
-
1937
- 1937-09-27 GB GB2613737A patent/GB497811A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0083241A2 (en) * | 1981-12-26 | 1983-07-06 | Mitsubishi Denki Kabushiki Kaisha | A low pressure inert gas discharge lamp |
| EP0083241A3 (en) * | 1981-12-26 | 1984-01-11 | Mitsubishi Denki Kabushiki Kaisha | A low pressure inert gas discharge device |
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