GB1005809A - Improvements relating to metal vapour electric discharge lamps - Google Patents
Improvements relating to metal vapour electric discharge lampsInfo
- Publication number
- GB1005809A GB1005809A GB2878762A GB2878762A GB1005809A GB 1005809 A GB1005809 A GB 1005809A GB 2878762 A GB2878762 A GB 2878762A GB 2878762 A GB2878762 A GB 2878762A GB 1005809 A GB1005809 A GB 1005809A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shield
- envelope
- mercury
- discharge lamps
- july
- 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
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
1,005,809. Discharge lamps. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. July 15, 1963 [July 26, 1962], No. 28787/62. Heading H1D. A colour corrected H.P. mercury vapour discharge lamp, the envelope of which contains at least one metallic halogen compound in addition to a filling of rare gas and mercury, has an electrically conductive shield in the space behind at least one of the electrodes, the shield being arranged transverse to the discharge path and electrically connected to the electrode to which it is adjacent. The envelope can be of quartz or ceramic and the shield can be of carbon or tungsten. In the construction shown in Fig. 2 the shield 8 fits tightly around the support 3 for the electrode 2. In other constructions the shield can be a disc in contact with the envelope, an evaporated layer on the envelope or a helix. The filling can be about 3 cm. of argon, sufficient mercury to produce an operating pressure limited to 3-4 atmospheres, and sufficient halogen compound to produce the requisite colour of emitted light.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2878762A GB1005809A (en) | 1962-07-26 | 1962-07-26 | Improvements relating to metal vapour electric discharge lamps |
| NL295741A NL295741A (en) | 1962-07-26 | 1963-07-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2878762A GB1005809A (en) | 1962-07-26 | 1962-07-26 | Improvements relating to metal vapour electric discharge lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1005809A true GB1005809A (en) | 1965-09-29 |
Family
ID=10281157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2878762A Expired GB1005809A (en) | 1962-07-26 | 1962-07-26 | Improvements relating to metal vapour electric discharge lamps |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB1005809A (en) |
| NL (1) | NL295741A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1589100B1 (en) * | 1966-09-12 | 1970-12-03 | Thorn Lighting Ltd | Alkali metal low pressure lamp |
| EP0074720A2 (en) * | 1981-09-15 | 1983-03-23 | THORN EMI plc | Discharge lamps |
| US4633136A (en) * | 1982-04-20 | 1986-12-30 | Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh | High-pressure discharge lamp with low power input |
-
1962
- 1962-07-26 GB GB2878762A patent/GB1005809A/en not_active Expired
-
1963
- 1963-07-24 NL NL295741A patent/NL295741A/xx unknown
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1589100B1 (en) * | 1966-09-12 | 1970-12-03 | Thorn Lighting Ltd | Alkali metal low pressure lamp |
| EP0074720A2 (en) * | 1981-09-15 | 1983-03-23 | THORN EMI plc | Discharge lamps |
| EP0074720A3 (en) * | 1981-09-15 | 1983-10-26 | Thorn Emi Plc | Discharge lamps |
| US4507584A (en) * | 1981-09-15 | 1985-03-26 | Thorn Emi Plc | Discharge lamp with metal coil electrode support inserted into cermet end cap |
| US4633136A (en) * | 1982-04-20 | 1986-12-30 | Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh | High-pressure discharge lamp with low power input |
Also Published As
| Publication number | Publication date |
|---|---|
| NL295741A (en) | 1965-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1071103A (en) | Electric discharge lamp | |
| US3121184A (en) | Discharge lamp with cathode shields | |
| US2467687A (en) | High-pressure discharge lamp | |
| US2549355A (en) | Fluorescent lamp | |
| ES440664A1 (en) | Fluorescent lamp with reduced wattage consumption having electrode shield with getter material | |
| US2545884A (en) | High-pressure mercury vapor electric discharge lamp | |
| GB1005809A (en) | Improvements relating to metal vapour electric discharge lamps | |
| GB1307417A (en) | Mercury-vapour discharge lamp | |
| US2438181A (en) | Fluorescent and/or cathode glow lamp and method | |
| GB1042266A (en) | Gaseous cold cathode indicator tube | |
| GB1488804A (en) | Electric lamp | |
| GB1531280A (en) | Metal halide lamps | |
| GB1190424A (en) | Electron Discharge Device for Generation of Spectral Radiation | |
| GB1026069A (en) | Arc discharge lamp | |
| GB952600A (en) | Improvements in low pressure mercury vapour discharge lamps | |
| US2748308A (en) | Low-pressure arc-discharge tube supplied with direct current | |
| US3439209A (en) | Positive column gas discharge lamp employing an alloy of two metals with impedance-free terminal connections | |
| US1954420A (en) | Glowlamp | |
| GB995419A (en) | An electric discharge lamp | |
| US2030437A (en) | Electric discharge device | |
| GB1289166A (en) | ||
| US3989972A (en) | High pressure mercury vapor discharge lamp containing bismuth iodide | |
| GB1389620A (en) | Discharge tube provided with an electrode comprising nickel and aluminium | |
| US3005923A (en) | Modulated short arc lamp envelope structure | |
| GB918753A (en) | Improvements relating to electric lamps |