GB570583A - Improvements relating to metal vapour electric discharge lamps - Google Patents
Improvements relating to metal vapour electric discharge lampsInfo
- Publication number
- GB570583A GB570583A GB646741A GB646741A GB570583A GB 570583 A GB570583 A GB 570583A GB 646741 A GB646741 A GB 646741A GB 646741 A GB646741 A GB 646741A GB 570583 A GB570583 A GB 570583A
- Authority
- GB
- United Kingdom
- Prior art keywords
- flame
- arc
- angle
- electrodes
- vertical
- 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
- H01J61/10—Shields, screens, or guides for influencing the discharge
- H01J61/106—Shields, screens, or guides for influencing the discharge using magnetic means
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
570,583. Discharge lamps. SIEMENS ELECTRIC LAMPS & SUPPLIES, Ltd., and ALDINGTON, J. N. May 20, 1941, No. 6467. [Class 39 (i)] In high - pressure metal vapour lamps of the compact source type where there is a tendency to produce a flame 6, Fig. 4, at an angle to the arc 5 due to ions carried by convection currents, a magnetic field is provided strong enough to disperse this flame or direct it along the arc, but not strong enough to disturb the arc. The harmful effect of the flame is obtained only with the electrodes 2, 3 at an angle to the vertical and with an electromagnet supplying the field this may be switched on only as the electrodes leave the vertical position; or a resistance may be cut out of the magnet circuit to increase the field on displacement. A horseshoe or bar magnet may be used. The faces of the electrodes may be at an angle to each other, with their nearest points uppermost with the lamp out of the vertical. The lamp may have an auxiliary electrode 4 and a filling of mercury and a starting gas such as neon and/or argon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB646741A GB570583A (en) | 1941-05-20 | 1941-05-20 | Improvements relating to metal vapour electric discharge lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB646741A GB570583A (en) | 1941-05-20 | 1941-05-20 | Improvements relating to metal vapour electric discharge lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB570583A true GB570583A (en) | 1945-07-13 |
Family
ID=9815010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB646741A Expired GB570583A (en) | 1941-05-20 | 1941-05-20 | Improvements relating to metal vapour electric discharge lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB570583A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1539461B1 (en) * | 1966-07-28 | 1970-05-14 | Licentia Gmbh | Headlights with defocusing device |
-
1941
- 1941-05-20 GB GB646741A patent/GB570583A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1539461B1 (en) * | 1966-07-28 | 1970-05-14 | Licentia Gmbh | Headlights with defocusing device |
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