JPS5753064A - Metal halide lamp - Google Patents

Metal halide lamp

Info

Publication number
JPS5753064A
JPS5753064A JP12832880A JP12832880A JPS5753064A JP S5753064 A JPS5753064 A JP S5753064A JP 12832880 A JP12832880 A JP 12832880A JP 12832880 A JP12832880 A JP 12832880A JP S5753064 A JPS5753064 A JP S5753064A
Authority
JP
Japan
Prior art keywords
sealed
charged
scandium
luminous
promethium
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
JP12832880A
Other languages
Japanese (ja)
Other versions
JPS6364030B2 (en
Inventor
Toshihiko Ishigami
Akihiro Inoue
Hiromoto Sasaki
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12832880A priority Critical patent/JPS5753064A/en
Publication of JPS5753064A publication Critical patent/JPS5753064A/en
Publication of JPS6364030B2 publication Critical patent/JPS6364030B2/ja
Granted 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
    • H01J61/548—Igniting arrangements, e.g. promoting ionisation for starting using radioactive means to promote ionisation

Landscapes

  • Discharge Lamp (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

PURPOSE:To improve starting properties and luminous efficiency by means a mercury lamp stabilizer by enclosing a radioactive material made of promethium that is formed as a sealed with power source, from the handling point of view, in a luminous tube in which scandium halide and argon gas are charged and sealed. CONSTITUTION:A radioactive material made of promethium that is formed as a sealed wire power source from handling point of view, is charged and sealed in a luminous tube 2 in which scandium halide is charged as a luminous metal and argon as starting rare gas, while the main electrodes 3, 4 are coated with scandium oxide. When glow discharge is started in the luminous tube 2, promethium, a radioactive material, emits beta-rays and accelerates the initial electron-discharge, to generate a rapid glow discharge. Further, when the step progresses in arc discharge, scandium oxide spread on main electrodes 3, 4 accelerates electron radioactivity. Starting properties and luminous efficiency of a lamp, in which scandium inferior in its starting properties is charged and sealed, can be improved by means of a mercury lamp stabilizer.
JP12832880A 1980-09-16 1980-09-16 Metal halide lamp Granted JPS5753064A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12832880A JPS5753064A (en) 1980-09-16 1980-09-16 Metal halide lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12832880A JPS5753064A (en) 1980-09-16 1980-09-16 Metal halide lamp

Publications (2)

Publication Number Publication Date
JPS5753064A true JPS5753064A (en) 1982-03-29
JPS6364030B2 JPS6364030B2 (en) 1988-12-09

Family

ID=14982063

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12832880A Granted JPS5753064A (en) 1980-09-16 1980-09-16 Metal halide lamp

Country Status (1)

Country Link
JP (1) JPS5753064A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59101755A (en) * 1982-12-03 1984-06-12 Toshiba Corp Metal halide lamp

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03129720A (en) * 1989-10-16 1991-06-03 Canon Inc exposure equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59101755A (en) * 1982-12-03 1984-06-12 Toshiba Corp Metal halide lamp

Also Published As

Publication number Publication date
JPS6364030B2 (en) 1988-12-09

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