GB1312756A - Arc discharge lamps - Google Patents

Arc discharge lamps

Info

Publication number
GB1312756A
GB1312756A GB144072A GB144072A GB1312756A GB 1312756 A GB1312756 A GB 1312756A GB 144072 A GB144072 A GB 144072A GB 144072 A GB144072 A GB 144072A GB 1312756 A GB1312756 A GB 1312756A
Authority
GB
United Kingdom
Prior art keywords
envelope
electrodes
reservoirs
passageway
jan
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
GB144072A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1312756A publication Critical patent/GB1312756A/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
    • H01J61/90—Lamps suitable only for intermittent operation, e.g. flash lamp

Landscapes

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

Abstract

1312756 Gas discharge lamps INTERNATIONAL STANDARD ELECTRIC CORP 12 Jan 1972 [21 Jan 1971] 1440/72 Heading H1D A flash discharge lamp comprises an envelope 1 at the ends of which are gas reservoirs 4, 5 connected by a central bore 3 in which a pair of electrodes 7, 8 fit snugly and define a discharge gap 9, a passageway 20 being provided adjacent the periphery of each electrode to permit gas flow between the gap and the reservoirs. The passageway 20 can be at least one groove formed in either the electrodes or the envelope. The electrodes can consist of pure tungsten sections 12, 13 and arcing sections 14, 15 joined by platinum at 16 and 17. The cathode can include 1 to 5% thoria and the electrode tips can be coated with glass and a flame sprayed ceramic coating. The envelope can be quartz, sapphire, polycrystalline alumina or yttrium oxide and the reservoirs can be metal. The filling is xenon with possibly an alkali vapour at 450 to 550 mm. Hg.
GB144072A 1971-01-21 1972-01-12 Arc discharge lamps Expired GB1312756A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10865871A 1971-01-21 1971-01-21

Publications (1)

Publication Number Publication Date
GB1312756A true GB1312756A (en) 1973-04-04

Family

ID=22323415

Family Applications (1)

Application Number Title Priority Date Filing Date
GB144072A Expired GB1312756A (en) 1971-01-21 1972-01-12 Arc discharge lamps

Country Status (4)

Country Link
US (1) US3705325A (en)
FR (1) FR2122579B1 (en)
GB (1) GB1312756A (en)
NL (1) NL7200870A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2178230A (en) * 1985-07-02 1987-02-04 Tungsram Reszvenytarsasag Discharge lamp with noble gas filling, especially for pulse operation

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60502028A (en) * 1983-08-12 1985-11-21 ハイマン　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング Wall stabilized infrared flash discharge tube
US6690103B1 (en) 1999-07-21 2004-02-10 Alan K. Uke Incandescent light bulb with variable pitch coiled filament
JP3907041B2 (en) * 2001-10-11 2007-04-18 日本碍子株式会社 High pressure discharge lamp discharge tube and high pressure discharge lamp
GB2423862A (en) * 2005-03-04 2006-09-06 Heraeus Noblelight Ltd High-pressure discharge lamp having constructional details for reducing devitrification of glass

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2178230A (en) * 1985-07-02 1987-02-04 Tungsram Reszvenytarsasag Discharge lamp with noble gas filling, especially for pulse operation

Also Published As

Publication number Publication date
FR2122579B1 (en) 1975-02-07
US3705325A (en) 1972-12-05
NL7200870A (en) 1972-07-25
FR2122579A1 (en) 1972-09-01

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees