GB2014358A - Discharge lamp - Google Patents

Discharge lamp

Info

Publication number
GB2014358A
GB2014358A GB7904872A GB7904872A GB2014358A GB 2014358 A GB2014358 A GB 2014358A GB 7904872 A GB7904872 A GB 7904872A GB 7904872 A GB7904872 A GB 7904872A GB 2014358 A GB2014358 A GB 2014358A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
discharge tube
coating
outer envelope
preferred
discharge lamp
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.)
Granted
Application number
GB7904872A
Other versions
GB2014358B (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.)
EMI Group Ltd
Original Assignee
EMI Group 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

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas- or vapour-discharge lamps
    • H01J61/02Details
    • H01J61/12Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/18Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent

Abstract

A low pressure electrical discharge lamp contains one or more copper halides as source of ultra-violet emission. Preferred lamps contain 0.1 to 0.5 mg per cc cuprous chloride and argon or neon to a pressure of 2 to 12 torr. A fluorescent material may be present as a coating (16) on an outer envelope (15) surrounding the discharge tube (11) or as a coating on the discharge tube itself. In the latter case, an outer envelope may have an infra-red reflecting coating to maintain the preferred discharge tube operating temperature of 200 to 400 DEG C. <IMAGE>
GB7904872A 1978-02-10 1979-02-12 Discharge lamp Expired GB2014358B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB550978 1978-02-10
GB7904872A GB2014358B (en) 1978-02-10 1979-02-12 Discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7904872A GB2014358B (en) 1978-02-10 1979-02-12 Discharge lamp

Publications (2)

Publication Number Publication Date
GB2014358A true true GB2014358A (en) 1979-08-22
GB2014358B GB2014358B (en) 1982-03-03

Family

ID=26239936

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7904872A Expired GB2014358B (en) 1978-02-10 1979-02-12 Discharge lamp

Country Status (1)

Country Link
GB (1) GB2014358B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1187173A2 (en) * 2000-09-08 2002-03-13 Philips Corporate Intellectual Property GmbH Low pressure gas discharge lamp with a copper-containing gas fill
EP1267389A1 (en) * 2001-06-15 2002-12-18 Philips Corporate Intellectual Property GmbH Mercury-free low pressure gas discharge lamp
WO2004025692A1 (en) * 2002-09-12 2004-03-25 Philips Intellectual Property & Standards Gmbh Low-pressure gas discharge lamp with electron emitter substances similar to batio3
US6972521B2 (en) 2000-09-08 2005-12-06 Koninklijke Philips Electronics N.V. Low-pressure gas discharge lamp having a mercury-free gas filling with an indium compound
WO2006043200A1 (en) * 2004-10-19 2006-04-27 Koninklijke Philips Electronics N.V. Low-pressure gas discharge lamp for backlighting with a large color gamut
EP1428241B1 (en) * 2001-06-19 2008-04-23 Philips Electronics N.V. Low-pressure gas discharge lamp with a mercury-free gas filling

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6603267B2 (en) 2000-08-08 2003-08-05 Koninklijke Philips Electronics N.V. Low-pressure gas discharge lamp with a copper-containing gas filling
EP1187173A2 (en) * 2000-09-08 2002-03-13 Philips Corporate Intellectual Property GmbH Low pressure gas discharge lamp with a copper-containing gas fill
EP1187173A3 (en) * 2000-09-08 2005-08-31 Philips Electronics N.V. Low pressure gas discharge lamp with a copper-containing gas fill
US6972521B2 (en) 2000-09-08 2005-12-06 Koninklijke Philips Electronics N.V. Low-pressure gas discharge lamp having a mercury-free gas filling with an indium compound
EP1267389A1 (en) * 2001-06-15 2002-12-18 Philips Corporate Intellectual Property GmbH Mercury-free low pressure gas discharge lamp
US6731070B2 (en) 2001-06-15 2004-05-04 Koninklijke Philips Electronics N.V. Low-pressure gas discharge lamp with a mercury-free gas filling
EP1428241B1 (en) * 2001-06-19 2008-04-23 Philips Electronics N.V. Low-pressure gas discharge lamp with a mercury-free gas filling
WO2004025692A1 (en) * 2002-09-12 2004-03-25 Philips Intellectual Property & Standards Gmbh Low-pressure gas discharge lamp with electron emitter substances similar to batio3
WO2006043200A1 (en) * 2004-10-19 2006-04-27 Koninklijke Philips Electronics N.V. Low-pressure gas discharge lamp for backlighting with a large color gamut

Also Published As

Publication number Publication date Type
GB2014358B (en) 1982-03-03 grant

Similar Documents

Publication Publication Date Title
US4020377A (en) High pressure mercury vapor discharge lamp
US3764843A (en) High-pressure gas discharge lamp containing germanium and selenium
US4155025A (en) High-pressure mercury-vapor discharge ultraviolet radiant energy lamp
US4647814A (en) High-power, high-pressure metal halide discharge lamp with improved spectral light distribution
US2152999A (en) Gaseous electric discharge lamp device
US2355258A (en) Ultraviolet fluorescent lamp
GB2000637A (en) High pressure metal vapor discharge lamps
US4521837A (en) Compact fluorescent lamp having increased light output
DE3518299A1 (en) Gas-discharge lamp
JPS5778765A (en) Fluorescent glow discharge lamp
JPS61185857A (en) Electrodeless discharge lamp
US4754194A (en) Flourescent light bulb
US3110833A (en) Multiple envelope high pressure mercury vapor discharge lamp
JPS52103879A (en) Metallic vapor discharge lamp
JPS5394468A (en) Metal vapor discharge lamp
US4978884A (en) Metal halide discharge lamp having low color temperature and improved color rendition
GB1514281A (en) Low pressure mercury vapour fluorescent electric discharge lamps
GB1223955A (en) High pressure electric discharge lamp
JPH04137349A (en) Short arc type mercury vapor discharge lamp
US4825127A (en) Metal halide discharge lamp for plant growing
JPS63248050A (en) Rare gas discharge lamp
US3989972A (en) High pressure mercury vapor discharge lamp containing bismuth iodide
JPS5397279A (en) Metal halide lamp
US4237401A (en) Low-pressure mercury vapor discharge lamp
JPS52115584A (en) Fluorescent lamp

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee