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GB1505142A - High current low pressure discharge device - Google Patents

High current low pressure discharge device

Info

Publication number
GB1505142A
GB1505142A GB8511/75A GB851175A GB1505142A GB 1505142 A GB1505142 A GB 1505142A GB 8511/75 A GB8511/75 A GB 8511/75A GB 851175 A GB851175 A GB 851175A GB 1505142 A GB1505142 A GB 1505142A
Authority
GB
United Kingdom
Prior art keywords
lamp
filament
low pressure
high current
pressure 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
GB8511/75A
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.)
General Electric Co
Original Assignee
General Electric 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 General Electric Co filed Critical General Electric Co
Publication of GB1505142A publication Critical patent/GB1505142A/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
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/067—Main electrodes for low-pressure discharge lamps
    • H01J61/0672—Main electrodes for low-pressure discharge lamps characterised by the construction of the electrode

Landscapes

  • Discharge Lamp (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

1505142 Metal-vapour lamp GENERAL ELECTRIC CO 28 Feb 1975 [4 March 1974] 8511/75 Heading H1D In a high current low pressure discharge lamp, e.g. for UV, an electrode 13 comprises a refractory metal hollow cylinder 21, containing coaxial filament 23, and internally coated with an emissive mix initially 24 on the filament and deposited by heating of the filament which is afterwards shorted 14-15 before operation of the lamp. A lamp envelope 10 of silica contains two such electrodes, rare gas and Hg25 : the emissive mix comprises alkali earths and rare earths, heated to 1100‹ C. to coat the hollow electrodes which in operation are heated by the A.C. discharge.
GB8511/75A 1974-03-04 1975-02-28 High current low pressure discharge device Expired GB1505142A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US448018A US3883764A (en) 1974-03-04 1974-03-04 Cathode structure for high current, low pressure discharge devices

Publications (1)

Publication Number Publication Date
GB1505142A true GB1505142A (en) 1978-03-30

Family

ID=23778682

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8511/75A Expired GB1505142A (en) 1974-03-04 1975-02-28 High current low pressure discharge device

Country Status (8)

Country Link
US (1) US3883764A (en)
JP (2) JPS50120180A (en)
AR (1) AR202843A1 (en)
BE (1) BE826261A (en)
BR (1) BR7500056A (en)
DE (1) DE2502649A1 (en)
GB (1) GB1505142A (en)
NL (1) NL7502365A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4093893A (en) * 1976-11-22 1978-06-06 General Electric Company Short arc fluorescent lamp
US4117374A (en) * 1976-12-23 1978-09-26 General Electric Company Fluorescent lamp with opposing inversere cone electrodes
US4523125A (en) * 1981-07-13 1985-06-11 General Electric Company Fluorescent lamp electrodes
DE3225328A1 (en) * 1982-07-07 1984-01-12 Institut optiki atmosfery Sibirskogo otdelenija Akademii Nauk SSSR, Tomsk Gas-discharge tube for a gas-pulse laser
DE3225327A1 (en) * 1982-07-07 1984-01-12 Institut optiki atmosfery Sibirskogo otdelenija Akademii Nauk SSSR, Tomsk Vapour pulse laser and a method for supplying the same
DE9202638U1 (en) * 1992-02-28 1992-04-16 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Low pressure discharge lamp
US5675214A (en) * 1994-09-21 1997-10-07 U.S. Philips Corporation Low-pressure discharge lamp having hollow electrodes
US5856726A (en) * 1996-03-15 1999-01-05 Osram Sylvania Inc. Electric lamp with a threaded electrode
US6034768A (en) * 1997-09-26 2000-03-07 Physical Sciences Inc. Induced breakdown spectroscopy detector system with controllable delay time
DE10108970A1 (en) * 2000-02-29 2001-10-25 Toshiba Lighting & Technology Phosphor lamp used in an illuminating body comprises a light-permeable glass tube containing sodium oxide, potassium oxide, lithium oxide and antimony oxide, and a base with an electrode arranged at each end of the tube
US7786660B2 (en) * 2007-02-06 2010-08-31 General Electric Company Highly emissive cavity for discharge lamp and method and material relating thereto
US8134290B2 (en) 2009-04-30 2012-03-13 Scientific Instrument Services, Inc. Emission filaments made from a rhenium alloy and method of manufacturing thereof
CN103463666B (en) * 2013-09-27 2015-06-24 何志明 Ultraviolet sterilization disinfection device and setting method thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT454148A (en) * 1948-01-15
US2935637A (en) * 1957-03-05 1960-05-03 Thomas M Cortese Fluorescent lamp
US3121184A (en) * 1960-12-30 1964-02-11 Gen Electric Discharge lamp with cathode shields
US3215882A (en) * 1962-12-31 1965-11-02 Sylvania Electric Prod Fluorescent lamp with noble metal amalgamated electrode
US3657591A (en) * 1970-06-26 1972-04-18 Gen Electric High intensity far u.v. radiation source

Also Published As

Publication number Publication date
AR202843A1 (en) 1975-07-24
BE826261A (en) 1975-06-30
BR7500056A (en) 1975-12-02
NL7502365A (en) 1975-09-08
DE2502649A1 (en) 1975-09-11
JPS5394492U (en) 1978-08-01
US3883764A (en) 1975-05-13
JPS50120180A (en) 1975-09-20

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed