GB462806A - Improvements in high-pressure metal-vapour electric discharge devices - Google Patents
Improvements in high-pressure metal-vapour electric discharge devicesInfo
- Publication number
- GB462806A GB462806A GB21982/36A GB2198236A GB462806A GB 462806 A GB462806 A GB 462806A GB 21982/36 A GB21982/36 A GB 21982/36A GB 2198236 A GB2198236 A GB 2198236A GB 462806 A GB462806 A GB 462806A
- Authority
- GB
- United Kingdom
- Prior art keywords
- envelope
- shields
- heat
- electric discharge
- pressure metal
- 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
- H01J61/84—Lamps with discharge constricted by high pressure
- H01J61/86—Lamps with discharge constricted by high pressure with discharge additionally constricted by close spacing of electrodes, e.g. for optical projection
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
462,806. Discharge lamps. GENERAL ELECTRIC CO., Ltd. (Patent-Treuhand-Ges. fur Elektrische Gluhlampen) Oct. 15, 1935, No. 21985/36. Divided out of 459,250. [Class 39 (i)] In a high-pressure metal-vapour electric discharge device wherein the vapour pressure during operation is eight atmospheres or more and wherein the least distance between the electrodes 4 is not much greater and may be less than the least distance from either electrode to the wall of the envelope 1, shields 8, 10, Fig. 1, are provided to conserve the heat about the electrodes, prevent sputtering on the envelope walls and protect the seals of the leading-in wires from the heat of the discharge. In a modification, pierced shields 8, Fig. 2, are integral with the envelope. The shields may be of quartz, alumina, tungsten, or molybdenum according to position. Specifications 456,608 and 459,250 are referred to. According to the Provisional Specification, heat reflecting coatings 12, 14 are placed on the envelope exterior ; light emerges through the gap 11, Fig. 1, but this may be replaced by a projecting window.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2087735X | 1935-10-09 | ||
| GB2850335A GB459250A (en) | 1935-10-15 | 1935-10-15 | Improvements in electric discharge devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB462806A true GB462806A (en) | 1937-03-16 |
Family
ID=31995366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21982/36A Expired GB462806A (en) | 1935-10-09 | 1935-10-15 | Improvements in high-pressure metal-vapour electric discharge devices |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2087735A (en) |
| GB (1) | GB462806A (en) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2433404A (en) * | 1942-02-25 | 1947-12-30 | Raytheon Mfg Co | Light generating device |
| US2567491A (en) * | 1943-12-29 | 1951-09-11 | Mitchell John Wesley | Luminous discharge tube |
| US2545884A (en) * | 1946-01-18 | 1951-03-20 | Gen Electric | High-pressure mercury vapor electric discharge lamp |
| US2561866A (en) * | 1947-02-20 | 1951-07-24 | Gen Electric | High-pressure metal vapor electric discharge lamp |
| US2561898A (en) * | 1948-05-13 | 1951-07-24 | Gen Electric | Electric discharge lamp |
| US2673944A (en) * | 1948-12-23 | 1954-03-30 | Gen Electric | Electric discharge lamp |
| US2682621A (en) * | 1948-12-31 | 1954-06-29 | Sylvania Electric Prod | Gaseous discharge tube |
| GB676143A (en) * | 1950-03-03 | 1952-07-23 | British Thomson Houston Co Ltd | Improvements in electric discharge lamps |
| US2716713A (en) * | 1950-03-22 | 1955-08-30 | Gen Electric | Cold electrode pulse lamp structure |
| BE502063A (en) * | 1950-03-22 | |||
| NL218300A (en) * | 1956-06-27 | |||
| US3205388A (en) * | 1960-12-30 | 1965-09-07 | Lany Beatrice Pearson De | Drill hole type cathode with cooling means |
| BE636192A (en) * | 1962-08-17 | |||
| US3422300A (en) * | 1966-06-30 | 1969-01-14 | Westinghouse Electric Corp | Ceramic arc tube and closure member construction |
| US3486058A (en) * | 1967-09-12 | 1969-12-23 | Rca Corp | Sputter resistive cold cathode for low pressure gas discharge device |
| AT300121B (en) * | 1968-11-22 | 1972-07-10 | Egyesuelt Izzolampa | Process for producing discharge lamps without suction tubes |
| US3930176A (en) * | 1974-02-14 | 1975-12-30 | Xenon Corp | Inner electrode-support seal for a gaseous discharge flashtube |
| US3917971A (en) * | 1974-03-22 | 1975-11-04 | Gte Sylvania Inc | Metal halide discharge lamp having a thermally insulative end coating |
| US4569198A (en) * | 1983-03-11 | 1986-02-11 | Technion, Incorporated | Heater/emitter assembly |
| USRE32918E (en) * | 1983-03-11 | 1989-05-09 | Technion, Inc. | Heater/emitter assembly |
| US5686789A (en) * | 1995-03-14 | 1997-11-11 | Osram Sylvania Inc. | Discharge device having cathode with micro hollow array |
| US5606218A (en) * | 1995-03-24 | 1997-02-25 | Osram Sylvania Inc. | Cold cathode subminiature fluorescent lamp |
| CN2515794Y (en) * | 2001-03-23 | 2002-10-09 | 东莞南光电器有限公司 | Flash lamp tube |
| JP4251474B2 (en) * | 2002-07-23 | 2009-04-08 | ウシオ電機株式会社 | Short arc discharge lamp and light source device |
| DE102006026940A1 (en) * | 2006-06-09 | 2007-12-13 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | High pressure discharge lamp |
-
1935
- 1935-10-15 GB GB21982/36A patent/GB462806A/en not_active Expired
-
1936
- 1936-10-06 US US104312A patent/US2087735A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2087735A (en) | 1937-07-20 |
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