GB1253948A - Metal halide discharge lamp - Google Patents

Metal halide discharge lamp

Info

Publication number
GB1253948A
GB1253948A GB07467/70A GB1746770A GB1253948A GB 1253948 A GB1253948 A GB 1253948A GB 07467/70 A GB07467/70 A GB 07467/70A GB 1746770 A GB1746770 A GB 1746770A GB 1253948 A GB1253948 A GB 1253948A
Authority
GB
United Kingdom
Prior art keywords
lamp
alcl
alumina
tube
filling
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
GB07467/70A
Inventor
Dimitrios Mandamadiotis Speros
William Edward Smyser
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 GB1253948A publication Critical patent/GB1253948A/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
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/125—Selection of substances for gas fillings; Specified operating pressure or temperature having an halogenide as principal component

Landscapes

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

Abstract

1,253,948. Metal-vapour lamps. GENERAL ELECTRIC CO. 13 April 1970 [19 May, 1969], No. 17467/70. Heading HID. An arc lamp comprises a filling which includes an inert gas (20 torr argon, for example), AlCl 3 and Al in which as stated the aluminium getters free chlorine and oxygen and also combines with chlorine from the thermal dissociation of AlCl 3 . Preferably included in the filling are Hg, and AlI 3 which reduces attack on the tungsten electrodes. The lamp envelope 2 is made of sintered high density polycrystalline alumina or of fused silica or quartz with an internal protective layer of Al 2 O 3 formed for example by exposing the hot tube to a mixture of AlCl 3 vapour, CO 2 and argon. The ends of the envelope are closed by niobium caps 3, 3<SP>1</SP> hermetically sealed to the alumina by an alumina-calcia sealing composition 4. A niobium tube 5 which supports one electrode 6, penetrates into the cap 3 for evacuation of the lamp after which the tube is closed off. The lamp is mounted in an evacuated outer jacket (not shown).
GB07467/70A 1969-05-19 1970-04-13 Metal halide discharge lamp Expired GB1253948A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82566169A 1969-05-19 1969-05-19

Publications (1)

Publication Number Publication Date
GB1253948A true GB1253948A (en) 1971-11-17

Family

ID=25244617

Family Applications (1)

Application Number Title Priority Date Filing Date
GB07467/70A Expired GB1253948A (en) 1969-05-19 1970-04-13 Metal halide discharge lamp

Country Status (6)

Country Link
US (1) US3586898A (en)
JP (1) JPS4915414B1 (en)
BE (1) BE750474A (en)
DE (1) DE2023772C3 (en)
FR (1) FR2047427A5 (en)
GB (1) GB1253948A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2237927A (en) * 1989-11-08 1991-05-15 Matsushita Electric Works Ltd High intensity discharge lamp
US5256940A (en) * 1989-11-08 1993-10-26 Matsushita Electric Works, Ltd. High intensity discharge lamp device
WO2004049386A2 (en) * 2002-11-26 2004-06-10 Philips Intellectual Property & Standards Gmbh High-pressure discharge lamp with mercury chloride having a limited chlorine content

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882343A (en) * 1970-10-06 1975-05-06 Gen Electric Tin chloride molecular radiation lamp
US3898504A (en) * 1970-12-09 1975-08-05 Matsushita Electronics Corp High pressure metal vapor discharge lamp
US3882345A (en) * 1971-11-22 1975-05-06 Gen Electric Metal halide discharge lamp containing tin and sodium halides
JPS5345631B2 (en) * 1972-04-04 1978-12-07
NL7303079A (en) * 1973-03-06 1974-09-10
US3911308A (en) * 1974-02-07 1975-10-07 Matsushita Electronics Corp High-pressure metal-vapor discharge lamp
JPS50115519U (en) * 1974-03-07 1975-09-20
US4480213A (en) * 1982-07-26 1984-10-30 Gte Laboratories Incorporated Compact mercury-free fluorescent lamp
US4492898A (en) * 1982-07-26 1985-01-08 Gte Laboratories Incorporated Mercury-free discharge lamp
US4495435A (en) * 1982-07-26 1985-01-22 Gte Laboratories Incorporated Plasma switch
US4647821A (en) * 1984-09-04 1987-03-03 Gte Laboratories Incorporated Compact mercury-free fluorescent lamp
US4636692A (en) * 1984-09-04 1987-01-13 Gte Laboratories Incorporated Mercury-free discharge lamp
US4710679A (en) * 1985-12-06 1987-12-01 Gte Laboratories Incorporated Fluorescent light source excited by excimer emission
DE4327534A1 (en) * 1993-08-16 1995-02-23 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Metal halide discharge lamp for photo-optical purposes
DE10216092A1 (en) * 2002-04-11 2003-10-30 Schott Glas Composite material used for envelope for HID lamps comprises a substrate material in the form of quartz and a barrier coating applied on one side of the substrate material using impulse-CVD
US20090098389A1 (en) * 2007-10-12 2009-04-16 General Electric Company. Highly emissive material, structure made from highly emissive material, and method of making the same
US7768207B2 (en) * 2007-10-12 2010-08-03 General Electric Company Highly emissive material, structure made from highly emissive material, and method of making the same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2237927A (en) * 1989-11-08 1991-05-15 Matsushita Electric Works Ltd High intensity discharge lamp
US5256940A (en) * 1989-11-08 1993-10-26 Matsushita Electric Works, Ltd. High intensity discharge lamp device
GB2237927B (en) * 1989-11-08 1994-09-21 Matsushita Electric Works Ltd High intensity discharge lamp device
WO2004049386A2 (en) * 2002-11-26 2004-06-10 Philips Intellectual Property & Standards Gmbh High-pressure discharge lamp with mercury chloride having a limited chlorine content
WO2004049386A3 (en) * 2002-11-26 2004-09-30 Philips Intellectual Property High-pressure discharge lamp with mercury chloride having a limited chlorine content
US7282862B2 (en) 2002-11-26 2007-10-16 Koninklijke Philips Electronics, N.V. High-pressure discharge lamp with mercury chloride having a limited chlorine content

Also Published As

Publication number Publication date
BE750474A (en) 1970-11-16
DE2023772B2 (en) 1974-01-17
JPS4915414B1 (en) 1974-04-15
US3586898A (en) 1971-06-22
FR2047427A5 (en) 1971-03-12
DE2023772A1 (en) 1970-12-10
DE2023772C3 (en) 1974-08-22

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