JPS54102070A - Metal vapor discharge lamp - Google Patents

Metal vapor discharge lamp

Info

Publication number
JPS54102070A
JPS54102070A JP904878A JP904878A JPS54102070A JP S54102070 A JPS54102070 A JP S54102070A JP 904878 A JP904878 A JP 904878A JP 904878 A JP904878 A JP 904878A JP S54102070 A JPS54102070 A JP S54102070A
Authority
JP
Japan
Prior art keywords
halide
lamp
scandium
cerium
sodium
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
JP904878A
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 JP904878A priority Critical patent/JPS54102070A/en
Publication of JPS54102070A publication Critical patent/JPS54102070A/en
Pending legal-status Critical Current

Links

Landscapes

  • Discharge Lamp (AREA)

Abstract

PURPOSE: To provide the subject lamp wherein scandium halide, sodium halide, and cerium halide are sealed in a luminous tube together with mercury and a starting rare gas in a specific ratio, thereby to improve the luminous efficiency of the lamp.
CONSTITUTION: In a luminous tube 1 there are sealed 7 to 80 molar % of scandium halide, 20 to 90 molar % of sodium halide and 4 to 50 % of cerium halide together with mercury and a starting rare gas. According to this procedure, by the formation of an eutectic mixture of the above described three members of halides its vapor pressure is increased thereby to increase the atomic densities of scandium, sodium and cerium in the arc and improve the luminous efficiency of the lamp.
COPYRIGHT: (C)1979,JPO&Japio
JP904878A 1978-01-30 1978-01-30 Metal vapor discharge lamp Pending JPS54102070A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP904878A JPS54102070A (en) 1978-01-30 1978-01-30 Metal vapor discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP904878A JPS54102070A (en) 1978-01-30 1978-01-30 Metal vapor discharge lamp

Publications (1)

Publication Number Publication Date
JPS54102070A true JPS54102070A (en) 1979-08-11

Family

ID=11709745

Family Applications (1)

Application Number Title Priority Date Filing Date
JP904878A Pending JPS54102070A (en) 1978-01-30 1978-01-30 Metal vapor discharge lamp

Country Status (1)

Country Link
JP (1) JPS54102070A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5532355A (en) * 1978-08-30 1980-03-07 Japan Storage Battery Co Ltd Metal halide lamp
US4422011A (en) * 1980-10-02 1983-12-20 U.S. Philips Corporation High-pressure mercury vapor discharge lamp
EP0603014A1 (en) * 1992-12-18 1994-06-22 Flowil International Lighting (Holding) B.V. Electrodeless lamp bulb
EP1271614A1 (en) * 2001-06-27 2003-01-02 Matsushita Electric Industrial Co., Ltd. Metal Halide Lamp
US6707252B2 (en) 2001-06-29 2004-03-16 Matsushita Electric Industrial Co., Ltd. Metal halide lamp
US6756721B2 (en) 2001-06-28 2004-06-29 Matsushita Electric Industrial Co., Ltd. Metal halide lamp
US7786674B2 (en) 2004-11-03 2010-08-31 Koninklijke Philips Electronics N.V. Quartz metal halide lamp with improved lumen maintenance

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5144740A (en) * 1974-10-15 1976-04-16 Kawasaki Heavy Ind Ltd 2 saikuruenjinno junkatsusochi

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5144740A (en) * 1974-10-15 1976-04-16 Kawasaki Heavy Ind Ltd 2 saikuruenjinno junkatsusochi

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5532355A (en) * 1978-08-30 1980-03-07 Japan Storage Battery Co Ltd Metal halide lamp
US4422011A (en) * 1980-10-02 1983-12-20 U.S. Philips Corporation High-pressure mercury vapor discharge lamp
EP0603014A1 (en) * 1992-12-18 1994-06-22 Flowil International Lighting (Holding) B.V. Electrodeless lamp bulb
EP1271614A1 (en) * 2001-06-27 2003-01-02 Matsushita Electric Industrial Co., Ltd. Metal Halide Lamp
US7061182B2 (en) 2001-06-27 2006-06-13 Matsushita Electric Industrial Co., Ltd. Metal halide lamp
US6756721B2 (en) 2001-06-28 2004-06-29 Matsushita Electric Industrial Co., Ltd. Metal halide lamp
US6707252B2 (en) 2001-06-29 2004-03-16 Matsushita Electric Industrial Co., Ltd. Metal halide lamp
US7786674B2 (en) 2004-11-03 2010-08-31 Koninklijke Philips Electronics N.V. Quartz metal halide lamp with improved lumen maintenance

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