JPS5632660A - Metal vapor discharge lamp - Google Patents

Metal vapor discharge lamp

Info

Publication number
JPS5632660A
JPS5632660A JP10876579A JP10876579A JPS5632660A JP S5632660 A JPS5632660 A JP S5632660A JP 10876579 A JP10876579 A JP 10876579A JP 10876579 A JP10876579 A JP 10876579A JP S5632660 A JPS5632660 A JP S5632660A
Authority
JP
Japan
Prior art keywords
electrodes
electrode
discharge lamp
electron radiation
suspension
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
JP10876579A
Other languages
Japanese (ja)
Inventor
Keiji Watanabe
Masato Saito
Keiji Fukuyama
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 JP10876579A priority Critical patent/JPS5632660A/en
Publication of JPS5632660A publication Critical patent/JPS5632660A/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
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes

Abstract

PURPOSE:To obtain a discharge lamp whose electrodes have good electron radiation ability and which exhibits little deterioration in the luminous flux and enjoys a long service lifetime, by providing electrodes each having an electron radiation substance which contains yttrium oxide and lanthanum oxide and limiting the actuation temperature of the electrode to a specific range. CONSTITUTION:A luminous tube 1 is provided with electrodes 2a, 2b, each having an electron radiation substance 18 which contains yttrium oxide and lanthanum oxide. The actuation temperature of the electrodes 2a, 2b are limited to 1,300- 1,900 deg.C. Each electrode is prepared, for example, by immersing an electrode-forming member which consists of a tungsten rod 15 and tungesten wires 16, 17 wound thereon in a suspension, which was prepared by adding a mixture consisting 80mol% of Y2O3 and 20mol% of La2O3 to butyl acetate together with nitro cellulose lacquer, pulling the electrode-forming member out of the suspension and then heating it in an argon gas atmosphere at 1,800 deg.C. A luminous tube 1 equipped with the thus-formed electrodes 2a, 2b and filled with a suitable amount of each of mercury, argon gas and the iodides of Sc and/or Na is disposed in an outer tube 14. A discharge lamp is formed so as to make the actuation temperatures of the electrodes 2a, 2b become about 1,600 deg.C during its lighting.
JP10876579A 1979-08-27 1979-08-27 Metal vapor discharge lamp Pending JPS5632660A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10876579A JPS5632660A (en) 1979-08-27 1979-08-27 Metal vapor discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10876579A JPS5632660A (en) 1979-08-27 1979-08-27 Metal vapor discharge lamp

Publications (1)

Publication Number Publication Date
JPS5632660A true JPS5632660A (en) 1981-04-02

Family

ID=14492916

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10876579A Pending JPS5632660A (en) 1979-08-27 1979-08-27 Metal vapor discharge lamp

Country Status (1)

Country Link
JP (1) JPS5632660A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6260054A (en) * 1985-09-10 1987-03-16 Nec Corp Exclusive control system for start-up operation of on-line system
JPH03296829A (en) * 1990-04-16 1991-12-27 Nec Corp Deadlock suppressing system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6260054A (en) * 1985-09-10 1987-03-16 Nec Corp Exclusive control system for start-up operation of on-line system
JPH03296829A (en) * 1990-04-16 1991-12-27 Nec Corp Deadlock suppressing system

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