GB945762A - A gaseous electric discharge lamp - Google Patents

A gaseous electric discharge lamp

Info

Publication number
GB945762A
GB945762A GB31710/61A GB3171061A GB945762A GB 945762 A GB945762 A GB 945762A GB 31710/61 A GB31710/61 A GB 31710/61A GB 3171061 A GB3171061 A GB 3171061A GB 945762 A GB945762 A GB 945762A
Authority
GB
United Kingdom
Prior art keywords
electrode
electric discharge
electrodes
envelope
sept
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
GB31710/61A
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 GB945762A publication Critical patent/GB945762A/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
    • H01J61/073—Main electrodes for high-pressure discharge lamps
    • H01J61/0732—Main electrodes for high-pressure discharge lamps characterised by the construction of the electrode

Abstract

945,762. Electric discharge lamps. GENERAL ELECTRIC CO. Sept. 4, 1961 [Sept. 21, 1960], No. 31710/61. Heading H1D. A gaseous electric discharge lamp, for instance an arc lamp, comprises a hermeticallysealed envelope 2 of refractory insulating material, for example quartz, provided with two spaced electrodes 4, 5 therein and contains an ionizable medium including, as a regenerative getter, iodine vapour, characterized in that at least one of the electrodes is of tungsten and that the heat-dissipating capacity of said electrode is correlated to the energy loading of the device such that during operation the electrode has a molten tip 6, any tungsten vaporized from the electrode being returned thereto by means of said iodine vapour. Preferably, both electrodes are identical and generally rod-like having in operation a surface tension supportedmolten ball-point the diameter of which is less than ten and preferably less than three times the diameter of the rod-like portion. The amount of free iodine present should be between 0.01 to 1 micromole per c.c. of envelope volume and mixed with an inert gas, such as argon or krypton. Pressures of 40 mm. Hg. 70 mm. Hg. and in the ranges of 1-10 and 10-100 atmospheres are specifically mentioned and the tube envelope temperature is stated to be greater than 250‹ C., preferably 1000‹ C.
GB31710/61A 1960-09-21 1961-09-04 A gaseous electric discharge lamp Expired GB945762A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US57579A US3067357A (en) 1960-09-21 1960-09-21 Electric discharge lamp electrode

Publications (1)

Publication Number Publication Date
GB945762A true GB945762A (en) 1964-01-08

Family

ID=22011479

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31710/61A Expired GB945762A (en) 1960-09-21 1961-09-04 A gaseous electric discharge lamp

Country Status (5)

Country Link
US (1) US3067357A (en)
DE (1) DE1170542B (en)
ES (1) ES269509A1 (en)
GB (1) GB945762A (en)
NL (1) NL269416A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1251433B (en) * 1963-01-03
US3271612A (en) * 1963-03-19 1966-09-06 Pek Labs Inc Flash device
US3259778A (en) * 1963-05-09 1966-07-05 Gen Electric Starting of high temperature electrode lamps
US3390298A (en) * 1965-03-31 1968-06-25 Gen Electric Electric discharge lamp envelope having molten inner surface at operating temperature
NL175480C (en) * 1974-06-12 1984-11-01 Philips Nv ELECTRODE FOR A DISCHARGE LAMP, METHOD FOR MANUFACTURING SUCH ELECTRODE AND DISCHARGE LAMP PROVIDED WITH SUCH ELECTRODE.
DE3641045A1 (en) * 1986-12-01 1988-06-09 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh HIGH PRESSURE DISCHARGE LAMP, SEMI-SIDED
DE4203977A1 (en) * 1992-02-11 1993-08-12 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh HIGH PRESSURE DISCHARGE LAMP
DE4203976A1 (en) * 1992-02-11 1993-08-12 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh HIGH PRESSURE DISCHARGE LAMP
US6483232B1 (en) 2000-07-14 2002-11-19 Amglo Kemlite Laboratories, Inc. Aviation landing lamp
US5357167A (en) * 1992-07-08 1994-10-18 General Electric Company High pressure discharge lamp with a thermally improved anode
DE19653572A1 (en) * 1996-12-20 1998-06-25 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Process for the production of helically wound helical bodies and helical bodies which are produced by this method
US6492772B1 (en) 1999-02-10 2002-12-10 Matsushita Electric Industrial Co., Ltd. High pressure discharge lamp, high pressure discharge lamp electrode, method of producing the high pressure discharge lamp electrode, and illumination device and image display apparatus respectively using the high pressure discharge lamps
US6705914B2 (en) 2000-04-18 2004-03-16 Matsushita Electric Industrial Co., Ltd. Method of forming spherical electrode surface for high intensity discharge lamp
JP3327896B2 (en) 2000-05-12 2002-09-24 松下電器産業株式会社 High pressure discharge lamp
DE10062974A1 (en) 2000-12-16 2002-06-20 Philips Corp Intellectual Pty High pressure gas discharge lamp and process for its manufacture
US7101245B2 (en) * 2002-12-31 2006-09-05 Welch Allyn, Inc. Stable electrode design and method
WO2004105082A2 (en) * 2003-05-26 2004-12-02 Philips Intellectual Property & Standards Gmbh Thorium-free electrode with improved color stability
WO2005010910A2 (en) * 2003-07-21 2005-02-03 Advanced Lighting Technologies, Inc. Dopant-free tungsten electrodes in metal halide lamps
US10040840B2 (en) 2015-10-02 2018-08-07 Silver Creek Pharmaceuticals, Inc. Bi-specific annexin A5/IGF-1 proteins and methods of use thereof to promote regeneration and survival of tissue

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1267858A (en) * 1916-07-03 1918-05-28 Gen Electric Inclosed-arc device.
GB110057A (en) * 1916-12-07 1917-10-11 British Thomson Houston Co Ltd Improvements in and relating to Electrical Discharge Tubes.
AT130412B (en) * 1930-09-15 1932-11-25 Siemens Ag Metal vapor arc lamp for AC operation.
US2009227A (en) * 1931-12-21 1935-07-23 Gen Electric Gaseous electric discharge device
DE754219C (en) * 1938-04-24 1954-03-15 Quarzlampen G M B H High-pressure metal vapor lamp, in particular high-pressure mercury lamp, with fixed, non-activated heating electrodes
US2241968A (en) * 1939-06-21 1941-05-13 Gen Electric Light source
GB614896A (en) * 1946-08-12 1948-12-23 Scophony Ltd Improvements in and relating to electric discharge lamps
FR994485A (en) * 1949-07-05 1951-11-16 Centre Nat Rech Scient Very short-lived point light source
DE833221C (en) * 1949-08-20 1952-03-06 Patra Patent Treuhand Electric gas discharge tubes, in particular for radiation purposes
US2965790A (en) * 1949-08-20 1960-12-20 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh High pressure gas lamp
US2687489A (en) * 1952-06-26 1954-08-24 Hanovia Chemical & Mfg Co Electrode
BE541432A (en) * 1954-09-22

Also Published As

Publication number Publication date
DE1170542B (en) 1964-05-21
NL269416A (en)
US3067357A (en) 1962-12-04
ES269509A1 (en) 1962-03-01

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