GB667070A - Improvements in and relating to electric discharge devices of the low pressure positive column type - Google Patents

Improvements in and relating to electric discharge devices of the low pressure positive column type

Info

Publication number
GB667070A
GB667070A GB195/49A GB19549A GB667070A GB 667070 A GB667070 A GB 667070A GB 195/49 A GB195/49 A GB 195/49A GB 19549 A GB19549 A GB 19549A GB 667070 A GB667070 A GB 667070A
Authority
GB
United Kingdom
Prior art keywords
envelope
relating
low pressure
electric discharge
column type
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
GB195/49A
Other languages
English (en)
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB667070A publication Critical patent/GB667070A/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
    • H01J61/16—Selection of substances for gas fillings; Specified operating pressure or temperature having helium, argon, neon, krypton, or xenon as the principle constituent
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
    • H01J61/72—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of easily vaporisable metal vapour, e.g. mercury

Landscapes

  • Discharge Lamp (AREA)
GB195/49A 1948-01-09 1949-01-04 Improvements in and relating to electric discharge devices of the low pressure positive column type Expired GB667070A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US486748XA 1948-01-09 1948-01-09

Publications (1)

Publication Number Publication Date
GB667070A true GB667070A (en) 1952-02-27

Family

ID=22071183

Family Applications (1)

Application Number Title Priority Date Filing Date
GB195/49A Expired GB667070A (en) 1948-01-09 1949-01-04 Improvements in and relating to electric discharge devices of the low pressure positive column type

Country Status (3)

Country Link
BE (1) BE486748A (zh)
DE (1) DE838801C (zh)
GB (1) GB667070A (zh)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003032364A1 (en) * 2001-10-04 2003-04-17 Koninklijke Philips Electronics N.V. Low-pressure mercury discharge lamp
WO2004032180A2 (en) * 2002-10-04 2004-04-15 Koninklijke Philips Electronics N.V. Low-pressure mercury vapour discharge lamp
WO2003085695A3 (en) * 2002-04-11 2005-05-06 Koninkl Philips Electronics Nv Low-pressure mercury vapor discharge lamp
US7263878B2 (en) 2002-04-17 2007-09-04 Continental Teves Ag & Co. Ohg Method for identifying tire characteristics
US7276853B2 (en) 2002-04-11 2007-10-02 Koninklijke Philips Electronics, N.V. Low-pressure mercury vapor discharge lamp

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003032364A1 (en) * 2001-10-04 2003-04-17 Koninklijke Philips Electronics N.V. Low-pressure mercury discharge lamp
WO2003085695A3 (en) * 2002-04-11 2005-05-06 Koninkl Philips Electronics Nv Low-pressure mercury vapor discharge lamp
US7276853B2 (en) 2002-04-11 2007-10-02 Koninklijke Philips Electronics, N.V. Low-pressure mercury vapor discharge lamp
CN100380568C (zh) * 2002-04-11 2008-04-09 皇家飞利浦电子股份有限公司 低压汞蒸汽放电灯
US7263878B2 (en) 2002-04-17 2007-09-04 Continental Teves Ag & Co. Ohg Method for identifying tire characteristics
WO2004032180A2 (en) * 2002-10-04 2004-04-15 Koninklijke Philips Electronics N.V. Low-pressure mercury vapour discharge lamp
WO2004032180A3 (en) * 2002-10-04 2005-08-25 Koninkl Philips Electronics Nv Low-pressure mercury vapour discharge lamp

Also Published As

Publication number Publication date
BE486748A (zh)
DE838801C (de) 1952-05-12

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