JPS5532338A - Metal halide lamp - Google Patents

Metal halide lamp

Info

Publication number
JPS5532338A
JPS5532338A JP10509778A JP10509778A JPS5532338A JP S5532338 A JPS5532338 A JP S5532338A JP 10509778 A JP10509778 A JP 10509778A JP 10509778 A JP10509778 A JP 10509778A JP S5532338 A JPS5532338 A JP S5532338A
Authority
JP
Japan
Prior art keywords
earth metal
rare earth
close
tube wall
wall load
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
JP10509778A
Other languages
Japanese (ja)
Inventor
Keiichi Baba
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 JP10509778A priority Critical patent/JPS5532338A/en
Publication of JPS5532338A publication Critical patent/JPS5532338A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To improve color display property and luminescence efficiency of a lamp of short electrode distance and high tube wall load by determining the quantity of close rare earth metal, the weight ratio between the alkali metal and the rate earth metal and the quantity of close Br within respective specific ranges.
CONSTITUTION: In a luminous tube (t) having an electrode gap of less than 2cm between electrodes 2 and 3 and a tube wall load of between 20W120W/sq.cm, the close quantity of rare earth metal is 0.4W5.0mg/cc, the weight ratio of alkali metal to the rare earth metal is 0.1W0.8, and the ratio of excessive close quantity of Br to the rare earth metal is 0.01W0.09mg/cc. For example, Hg, Ar gas, bromides of Dy, Ho, Tm and Hg are closed in a quartz luminous tube having a electrode gap of 10mm, a tube wall load of 42W/sq.cm and inside diameter of 10mm satisfying the conditions hereinbefore described, thus improving the luminescence efficiency and luminous flux maintenance and stabilizing the arc.
COPYRIGHT: (C)1980,JPO&Japio
JP10509778A 1978-08-29 1978-08-29 Metal halide lamp Pending JPS5532338A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10509778A JPS5532338A (en) 1978-08-29 1978-08-29 Metal halide lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10509778A JPS5532338A (en) 1978-08-29 1978-08-29 Metal halide lamp

Publications (1)

Publication Number Publication Date
JPS5532338A true JPS5532338A (en) 1980-03-07

Family

ID=14398390

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10509778A Pending JPS5532338A (en) 1978-08-29 1978-08-29 Metal halide lamp

Country Status (1)

Country Link
JP (1) JPS5532338A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0670588A1 (en) * 1992-09-25 1995-09-06 Hamamatsu Photonics K.K. Metal halide lamp
US5451838A (en) * 1994-03-03 1995-09-19 Hamamatsu Photonics K.K. Metal halide lamp
EP0769801A2 (en) * 1995-10-20 1997-04-23 Matsushita Electric Industrial Co., Ltd. Metal halide lamp
US7573203B2 (en) * 2005-11-07 2009-08-11 Toshiba Lighting & Technology Corporation Mercury-free high-pressure discharge lamp and luminaire using the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5135579A (en) * 1974-09-20 1976-03-26 Mitsubishi Electric Corp METARUHARAIDOR ANPU

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5135579A (en) * 1974-09-20 1976-03-26 Mitsubishi Electric Corp METARUHARAIDOR ANPU

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0670588A1 (en) * 1992-09-25 1995-09-06 Hamamatsu Photonics K.K. Metal halide lamp
US5451838A (en) * 1994-03-03 1995-09-19 Hamamatsu Photonics K.K. Metal halide lamp
EP0769801A2 (en) * 1995-10-20 1997-04-23 Matsushita Electric Industrial Co., Ltd. Metal halide lamp
EP0769801A3 (en) * 1995-10-20 1997-10-22 Matsushita Electric Ind Co Ltd Metal halide lamp
US7573203B2 (en) * 2005-11-07 2009-08-11 Toshiba Lighting & Technology Corporation Mercury-free high-pressure discharge lamp and luminaire using the same

Similar Documents

Publication Publication Date Title
GB1282805A (en) High pressure mercury vapour discharge lamp with a metal halide additive
ES8207385A1 (en) High-pressure mercury vapour discharge lamp.
US4591759A (en) Ingredients for solenoidal metal halide arc lamps
JPS5532338A (en) Metal halide lamp
JPS54102070A (en) Metal vapor discharge lamp
JPS5591560A (en) Metal halide lamp
JPS56126244A (en) Metal halide lamp
JPS6419671A (en) High voltage metal halide lamp
JPS5691368A (en) Metal halide lamp
JPS5743352A (en) Metal halide lamp
JPS554857A (en) Metal halide lamp
JPS54141078A (en) Metal-halide lamp
JPS5562653A (en) Metal halide lamp
JPS5550567A (en) Metal halide lamp
JPS56143650A (en) Metal halide lamp
JPS51122972A (en) Metalic halide lamp
JPS5580259A (en) Metal halide lamp
CA1238937A (en) Ingredients for solenoidal metal halide arc lamps
JPS5346181A (en) Bulb type fluorescent discharge lamp
JPS5533739A (en) Metal halide lamp
JPS5591549A (en) Metal vapor discharge lamp
JPS5767278A (en) Metal halide lamp
JPS55143768A (en) Metal vapor discharge lamp and its manufacture
JPS5725665A (en) Metal halide lamp
JPS5451287A (en) Metal halide lamp