GB545592A - Improvements in or relating to gaseous electric discharge lamps - Google Patents
Improvements in or relating to gaseous electric discharge lampsInfo
- Publication number
- GB545592A GB545592A GB2739/41A GB273941A GB545592A GB 545592 A GB545592 A GB 545592A GB 2739/41 A GB2739/41 A GB 2739/41A GB 273941 A GB273941 A GB 273941A GB 545592 A GB545592 A GB 545592A
- Authority
- GB
- United Kingdom
- Prior art keywords
- discharge lamps
- relating
- electric discharge
- envelope
- discharge
- 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
- H01J61/30—Vessels; Containers
- H01J61/33—Special shape of cross-section, e.g. for producing cool spot
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
545,592. Discharge lamps. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Feb. 28, 1941, No. 2739. Convention date, March 1, 1940. [Class 39 (i)] The envelope 5 of a discharge lamp with a fluorescent coating is of oval cross section, with relatively small radius of curvature at the sides. The walls of the envelope may be thickened as at 12 to form lenses. The filling is mercury and a noble gas. The discharge is stated to concentrate at the flat surfaces, the rounded parts being cooler.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US321625A US2267118A (en) | 1940-03-01 | 1940-03-01 | Fluorescent tube |
Publications (1)
Publication Number | Publication Date |
---|---|
GB545592A true GB545592A (en) | 1942-06-03 |
Family
ID=23251327
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2739/41A Expired GB545592A (en) | 1940-03-01 | 1941-02-28 | Improvements in or relating to gaseous electric discharge lamps |
Country Status (4)
Country | Link |
---|---|
US (1) | US2267118A (en) |
BE (1) | BE469579A (en) |
FR (1) | FR938641A (en) |
GB (1) | GB545592A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1000521B (en) * | 1953-04-25 | 1957-01-10 | Flora Mannesmann Geb Nestler | Discharge flash lamp, especially for microscope photography |
DE2825018A1 (en) * | 1978-06-05 | 1979-12-06 | Georg Horstmann | MERCURY LOW PRESSURE LAMP |
GB2217905A (en) * | 1988-04-13 | 1989-11-01 | Ac Dc Holdings Limited | Discharge lamps |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2535773A (en) * | 1943-04-17 | 1950-12-26 | Gen Electric | Terminal and seal construction for electric lamps and similar devices |
BE556306A (en) * | 1954-12-14 | |||
US3443144A (en) * | 1964-12-31 | 1969-05-06 | Sylvania Electric Prod | Infrared incandescent lamp |
US3457447A (en) * | 1966-07-01 | 1969-07-22 | Sylvania Electric Prod | Apertured fluorescent lamp with lens along the aperture |
US3412276A (en) * | 1967-02-02 | 1968-11-19 | Coastal Dynamics Corp | Twin filament lamp |
US3617792A (en) * | 1969-02-24 | 1971-11-02 | Gen Electric | Highly loaded flourescent lamp particularly for dc operation |
US4356428A (en) * | 1980-03-05 | 1982-10-26 | Intent Patent, A.G. | Lighting system |
JPS643953A (en) * | 1987-06-26 | 1989-01-09 | Hitachi Ltd | Flat-cross section circular fluorescent lamp |
FR2648617A1 (en) * | 1989-06-17 | 1990-12-21 | Toshiba Lighting Technology Co | FLUORESCENT LAMP |
WO1996031902A1 (en) * | 1995-04-05 | 1996-10-10 | Wedeco Umwelttechnologie Wasser-Boden-Luft Gmbh | Low-pressure mercury vapour discharge lamp |
DE29701200U1 (en) * | 1997-01-24 | 1997-03-20 | Böhm, Werner, 98693 Ilmenau | Gas discharge tube |
DE20016020U1 (en) * | 2000-09-15 | 2001-11-08 | JK-Josef Kratz GmbH, 53578 Windhagen | Spotlights and tanning equipment |
JP4366655B2 (en) * | 2004-05-31 | 2009-11-18 | サンケン電気株式会社 | Discharge tube |
KR101311676B1 (en) * | 2005-12-30 | 2013-09-25 | 엘지디스플레이 주식회사 | Lamp, back light unit and liquid crystal display using the back light unit |
-
0
- BE BE469579D patent/BE469579A/xx unknown
-
1940
- 1940-03-01 US US321625A patent/US2267118A/en not_active Expired - Lifetime
-
1941
- 1941-02-28 GB GB2739/41A patent/GB545592A/en not_active Expired
-
1946
- 1946-10-04 FR FR938641D patent/FR938641A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1000521B (en) * | 1953-04-25 | 1957-01-10 | Flora Mannesmann Geb Nestler | Discharge flash lamp, especially for microscope photography |
DE2825018A1 (en) * | 1978-06-05 | 1979-12-06 | Georg Horstmann | MERCURY LOW PRESSURE LAMP |
GB2217905A (en) * | 1988-04-13 | 1989-11-01 | Ac Dc Holdings Limited | Discharge lamps |
Also Published As
Publication number | Publication date |
---|---|
FR938641A (en) | 1948-10-20 |
US2267118A (en) | 1941-12-23 |
BE469579A (en) |
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