GB545592A - Improvements in or relating to gaseous electric discharge lamps - Google Patents

Improvements in or relating to gaseous electric discharge lamps

Info

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
Application number
GB2739/41A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Publication of GB545592A publication Critical patent/GB545592A/en
Expired legal-status Critical Current

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.
GB2739/41A 1940-03-01 1941-02-28 Improvements in or relating to gaseous electric discharge lamps Expired GB545592A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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