EP0136726A3 - Emissive material for high intensity sodium vapor discharge device - Google Patents

Emissive material for high intensity sodium vapor discharge device Download PDF

Info

Publication number
EP0136726A3
EP0136726A3 EP84111973A EP84111973A EP0136726A3 EP 0136726 A3 EP0136726 A3 EP 0136726A3 EP 84111973 A EP84111973 A EP 84111973A EP 84111973 A EP84111973 A EP 84111973A EP 0136726 A3 EP0136726 A3 EP 0136726A3
Authority
EP
European Patent Office
Prior art keywords
discharge device
high intensity
vapor discharge
emissive material
sodium vapor
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.)
Withdrawn
Application number
EP84111973A
Other languages
German (de)
French (fr)
Other versions
EP0136726A2 (en
Inventor
Philip J. White
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.)
Osram Sylvania Inc
Original Assignee
GTE Products 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 GTE Products Corp filed Critical GTE Products Corp
Publication of EP0136726A2 publication Critical patent/EP0136726A2/en
Publication of EP0136726A3 publication Critical patent/EP0136726A3/en
Withdrawn legal-status Critical Current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
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/073—Main electrodes for high-pressure discharge lamps
    • H01J61/0735—Main electrodes for high-pressure discharge lamps characterised by the material of the electrode
    • H01J61/0737—Main electrodes for high-pressure discharge lamps characterised by the material of the electrode characterised by the electron emissive material

Landscapes

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

Abstract

A high intensity sodium vapor discharge device includes an elongated envelope containing an elongated arc tube having a fill of noble gases and an electrode with emissive material thereon or therein with a free energy of formation per mole of oxygen more negative than the free energy of formation of barium oxide.
EP84111973A 1983-10-06 1984-10-05 Emissive material for high intensity sodium vapor discharge device Withdrawn EP0136726A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US53960583A 1983-10-06 1983-10-06
US539605 1983-10-06

Publications (2)

Publication Number Publication Date
EP0136726A2 EP0136726A2 (en) 1985-04-10
EP0136726A3 true EP0136726A3 (en) 1986-01-22

Family

ID=24151917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84111973A Withdrawn EP0136726A3 (en) 1983-10-06 1984-10-05 Emissive material for high intensity sodium vapor discharge device

Country Status (2)

Country Link
EP (1) EP0136726A3 (en)
CA (1) CA1227521A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1007595A3 (en) * 1993-10-07 1995-08-16 Philips Electronics Nv HIGH-metal halide discharge LAMP.
DE29703990U1 (en) * 1997-03-05 1997-04-17 Thielen Marcus Dipl Phys Cold electrode for gas discharges
CN104183460A (en) * 2013-05-28 2014-12-03 海洋王照明科技股份有限公司 Ceramic halogen lamp electrode and ceramic halogen lamp
CN104183456A (en) * 2013-05-28 2014-12-03 海洋王照明科技股份有限公司 Ceramic halogen lamp electrode and ceramic halogen lamp

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4052634A (en) * 1975-06-20 1977-10-04 U.S. Philips Corporation High-pressure gas discharge lamp and electron emissive electrode structure therefor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4052634A (en) * 1975-06-20 1977-10-04 U.S. Philips Corporation High-pressure gas discharge lamp and electron emissive electrode structure therefor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IEE PROCEEDINGS, vol. 128, no. 6, part A, September 1981, pages 415-441, Old Woking, Surrey, GB; J.A.J.M. VAN VLIET et al.: "High-pressure sodium discharge lamps" *

Also Published As

Publication number Publication date
EP0136726A2 (en) 1985-04-10
CA1227521A (en) 1987-09-29

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19841005

AK Designated contracting states

Designated state(s): BE DE FR GB NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): BE DE FR GB NL

17Q First examination report despatched

Effective date: 19871119

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19890503

RIN1 Information on inventor provided before grant (corrected)

Inventor name: WHITE, PHILIP J.