JPS57138769A - High pressure electric-discharge lamp - Google Patents

High pressure electric-discharge lamp

Info

Publication number
JPS57138769A
JPS57138769A JP2391281A JP2391281A JPS57138769A JP S57138769 A JPS57138769 A JP S57138769A JP 2391281 A JP2391281 A JP 2391281A JP 2391281 A JP2391281 A JP 2391281A JP S57138769 A JPS57138769 A JP S57138769A
Authority
JP
Japan
Prior art keywords
auxiliary body
film
main electrode
high pressure
starting auxiliary
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.)
Pending
Application number
JP2391281A
Other languages
Japanese (ja)
Inventor
Keiji Watabe
Ryo Suzuki
Masato Saito
Masahiro Dobashi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2391281A priority Critical patent/JPS57138769A/en
Publication of JPS57138769A publication Critical patent/JPS57138769A/en
Pending 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
    • H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
    • H01J61/547—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode outside the vessel

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

PURPOSE:To facilitate the initiation of the electric discharge of a high pressure electric-discharge lamp without deteriorating the life of the lamp by making a starting auxiliary body to have the same electric potential as that of one of the main electrodes, and installing the said starting auxiliary body near the other main electrode. CONSTITUTION:A starting auxiliary body 15 consists of a conductive film 17, which is prepared by forming a tantalum metal film over an alumina ceramic plate 18, and an alumina ceramic plate 18 covering the film 17. One end of the conducive film 17 is electrically and mechanically connected to a supporting frame 4, which has the same electric potential as that of a main electrode 2, by means of a lead 19. The other end of the conductive film 17 is located outside an emission tube, slightly apart from a main electrode 3.
JP2391281A 1981-02-20 1981-02-20 High pressure electric-discharge lamp Pending JPS57138769A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2391281A JPS57138769A (en) 1981-02-20 1981-02-20 High pressure electric-discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2391281A JPS57138769A (en) 1981-02-20 1981-02-20 High pressure electric-discharge lamp

Publications (1)

Publication Number Publication Date
JPS57138769A true JPS57138769A (en) 1982-08-27

Family

ID=12123689

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2391281A Pending JPS57138769A (en) 1981-02-20 1981-02-20 High pressure electric-discharge lamp

Country Status (1)

Country Link
JP (1) JPS57138769A (en)

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