GB466647A - Improvements in or relating to electric discharge lamps - Google Patents
Improvements in or relating to electric discharge lampsInfo
- Publication number
- GB466647A GB466647A GB2502836A GB2502836A GB466647A GB 466647 A GB466647 A GB 466647A GB 2502836 A GB2502836 A GB 2502836A GB 2502836 A GB2502836 A GB 2502836A GB 466647 A GB466647 A GB 466647A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamp
- control electrode
- pressure
- cathode
- glass
- 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
- H01J61/95—Lamps with control electrode for varying intensity or wavelength of the light, e.g. for producing modulated light
Landscapes
- Discharge Lamp (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
466,647. Discharge lamps. HARTEL, H. VON. Sept. 14, 1936, No. 25028. [Class 39 (i)] A discharge lamp for use in the production of sound films, picture telegraphy, television, &c. contains an auxiliary electrode for controlling the luminosity and means for decreasing the cross-section of the luminous gas whereby, as it is stated, the brightness is increased. Fig. 2 shows such a lamp in which the cathode 2 is surrounded by a ceramic cylinder 13 with a small open, ing, and the control electrode is formed by the body 10 of the lamp, which is of metal with a glass &c. window 12, or the whole of the lamp body may be of glass and the control electrode formed by a metal lining. Fig. 3 shows a form in which the body 1 of the lamp has a capillary portion and the control electrode 14 is formed as a grid. In another form the cross-section of the luminous gas is restricted by a small opening in the control electrode which surrounds the cathode. The lamp may be filled with vapours of mercury, gallium or alkali or alkali earth metals at a pressure of from 10<-4> to 10<-2> Hg. to which may be added argon, neon or helium at 10<-2> to 10-1 Hg. working pressure. The internal resistance of the lamp may be suited to any source of operating current and the amplification controlled by properly choosing the nature and pressure of the gas filling and the position and shape of the control electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2502836A GB466647A (en) | 1936-09-14 | 1936-09-14 | Improvements in or relating to electric discharge lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2502836A GB466647A (en) | 1936-09-14 | 1936-09-14 | Improvements in or relating to electric discharge lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB466647A true GB466647A (en) | 1937-06-01 |
Family
ID=10221046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2502836A Expired GB466647A (en) | 1936-09-14 | 1936-09-14 | Improvements in or relating to electric discharge lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB466647A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100442431C (en) * | 2006-03-29 | 2008-12-10 | 东南大学 | Ceramic auxiliary cathode hot cathode fluorescence lamp |
| CN100454478C (en) * | 2006-03-29 | 2009-01-21 | 东南大学 | Auxiliary ceramic cathode cold cathode fluorescence lamp |
-
1936
- 1936-09-14 GB GB2502836A patent/GB466647A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100442431C (en) * | 2006-03-29 | 2008-12-10 | 东南大学 | Ceramic auxiliary cathode hot cathode fluorescence lamp |
| CN100454478C (en) * | 2006-03-29 | 2009-01-21 | 东南大学 | Auxiliary ceramic cathode cold cathode fluorescence lamp |
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