JPS5725665A - Metal halide lamp - Google Patents

Metal halide lamp

Info

Publication number
JPS5725665A
JPS5725665A JP10154780A JP10154780A JPS5725665A JP S5725665 A JPS5725665 A JP S5725665A JP 10154780 A JP10154780 A JP 10154780A JP 10154780 A JP10154780 A JP 10154780A JP S5725665 A JPS5725665 A JP S5725665A
Authority
JP
Japan
Prior art keywords
halide
color rendering
charged
emission tube
metal halide
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
JP10154780A
Other languages
Japanese (ja)
Inventor
Toshihiko Ishigami
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 JP10154780A priority Critical patent/JPS5725665A/en
Publication of JPS5725665A publication Critical patent/JPS5725665A/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
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
    • H01J61/20—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent mercury vapour

Landscapes

  • Discharge Lamp (AREA)

Abstract

PURPOSE:To increase the general color rendering index of a metal halide lamp, by charging the emission tube in a luminescent state with at least one of the halides of titanium, zirconium and hafnium. CONSTITUTION:An emission tube provided with an electrode is charged with mercury, a rare gas, and luminous metals, that are sodium halide and scandium halide. The charged molar rate of the former sodium halide to scandium halide is 1/2-9. The emission tube also is charged with at least one of the halides of titanium, zirconium and hafnium. As a result, relatively high efficiency (more than 80lm/W) and high color rendering (general color rendering index >=80) can be realized.
JP10154780A 1980-07-24 1980-07-24 Metal halide lamp Pending JPS5725665A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10154780A JPS5725665A (en) 1980-07-24 1980-07-24 Metal halide lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10154780A JPS5725665A (en) 1980-07-24 1980-07-24 Metal halide lamp

Publications (1)

Publication Number Publication Date
JPS5725665A true JPS5725665A (en) 1982-02-10

Family

ID=14303455

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10154780A Pending JPS5725665A (en) 1980-07-24 1980-07-24 Metal halide lamp

Country Status (1)

Country Link
JP (1) JPS5725665A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0492205A2 (en) * 1990-12-20 1992-07-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Metal halide high-pressure discharge lamp
WO2007132368A2 (en) * 2006-05-15 2007-11-22 Koninklijke Philips Electronics N.V. Low-pressure gas discharge lamp having improved efficiency

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0492205A2 (en) * 1990-12-20 1992-07-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Metal halide high-pressure discharge lamp
WO2007132368A2 (en) * 2006-05-15 2007-11-22 Koninklijke Philips Electronics N.V. Low-pressure gas discharge lamp having improved efficiency
WO2007132368A3 (en) * 2006-05-15 2008-01-24 Koninkl Philips Electronics Nv Low-pressure gas discharge lamp having improved efficiency

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