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GB1026470A - Improvements in reflector arc lamps - Google Patents

Improvements in reflector arc lamps

Info

Publication number
GB1026470A
GB1026470A GB332665A GB332665A GB1026470A GB 1026470 A GB1026470 A GB 1026470A GB 332665 A GB332665 A GB 332665A GB 332665 A GB332665 A GB 332665A GB 1026470 A GB1026470 A GB 1026470A
Authority
GB
United Kingdom
Prior art keywords
reflector
brazed
tube
centre
lead
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
GB332665A
Inventor
John Wilson
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
Priority to GB332665A priority Critical patent/GB1026470A/en
Publication of GB1026470A publication Critical patent/GB1026470A/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
    • H01J61/84—Lamps with discharge constricted by high pressure
    • H01J61/86—Lamps with discharge constricted by high pressure with discharge additionally constricted by close spacing of electrodes, e.g. for optical projection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/98—Lamps with closely spaced electrodes heated to incandescence by light-emitting discharge, e.g. tungsten arc lamp

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

1,026,470. Discharge lamps. GENERAL ELECTRIC CO. Jan. 26, 1965, No. 3326/65. Heading H1D. The leads 4 and 5, Fig. 1 (not shown), to an elongated cylindrical arc tube 1 in a reflector lamp comprising a vitreous outer envelope formed by a concave reflector 14 and a transparent cover 15 peripherally sealed together, are joined to connectors sealed respectively through the centre of the reflector and the centre of the cover. The arc tube 1 comprises a thoriated tungsten cathode 8 and a tungsten anode 9 supported by a spring 11 in an envelope filled with xenon at a pressure of a fraction of an atmosphere to several atmospheres. Cathode lead 4 is welded to the centre of a bow-shaped conductor 23 whose ends are brazed together in a copper tube 24 which is brazed to a ferrule 18. Anode lead 5 is welded to an alloy wire 28 brazed to a ferrule 21 to which is also brazed a lead 29. Tube 24 has a side hole 25 through which nitrogen is passed while sealing the cover 15 to the reflector 14. The outer envelope is exhausted and then filled with nitrogen to a pressure of about half an atmosphere. The tube 24 is then pinched off at 27 and serves as a cathode terminal. The lamp may be used in a television projection system.
GB332665A 1965-01-26 1965-01-26 Improvements in reflector arc lamps Expired GB1026470A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB332665A GB1026470A (en) 1965-01-26 1965-01-26 Improvements in reflector arc lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB332665A GB1026470A (en) 1965-01-26 1965-01-26 Improvements in reflector arc lamps

Publications (1)

Publication Number Publication Date
GB1026470A true GB1026470A (en) 1966-04-20

Family

ID=9756203

Family Applications (1)

Application Number Title Priority Date Filing Date
GB332665A Expired GB1026470A (en) 1965-01-26 1965-01-26 Improvements in reflector arc lamps

Country Status (1)

Country Link
GB (1) GB1026470A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2627628A1 (en) * 1988-02-18 1989-08-25 Gen Electric XENON LAMP MORE PARTICULARLY FOR AUTOMOTIVE APPLICATIONS
GB2462886A (en) * 2008-09-01 2010-03-03 Barco Nv A transparent electrode or glass bulb support for a discharge lamp system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2627628A1 (en) * 1988-02-18 1989-08-25 Gen Electric XENON LAMP MORE PARTICULARLY FOR AUTOMOTIVE APPLICATIONS
GB2462886A (en) * 2008-09-01 2010-03-03 Barco Nv A transparent electrode or glass bulb support for a discharge lamp system

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