JPS54150873A - Super high pressure mercury lamp - Google Patents

Super high pressure mercury lamp

Info

Publication number
JPS54150873A
JPS54150873A JP5928478A JP5928478A JPS54150873A JP S54150873 A JPS54150873 A JP S54150873A JP 5928478 A JP5928478 A JP 5928478A JP 5928478 A JP5928478 A JP 5928478A JP S54150873 A JPS54150873 A JP S54150873A
Authority
JP
Japan
Prior art keywords
high pressure
super high
mercury lamp
pressure mercury
luminous tube
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
JP5928478A
Other languages
Japanese (ja)
Inventor
Isao Shoda
Hitoshi Kodama
Kenichi Hashimoto
Fumio Sugano
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 JP5928478A priority Critical patent/JPS54150873A/en
Publication of JPS54150873A publication Critical patent/JPS54150873A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To provide a super high pressure mercury lamp, wherein the electrodes are made of tungsten, and within a luminous tube are sealed certain amounts of bromine and a halide of iron in addition to desired amounts of mercury and an inert gas thereby improving the luminous efficiency of ultraviolet rays and preventing the loss of clarity of the quartz tube.
CONSTITUTION: A pair of electrodes 6, 7 are made of tungsten, and within a luminous tube 1 of light transmittable quartz are sealed, in addition to desired amounts of mercury and an inert gas, 0.1 x 10-6 to 6 x 10-6 gram atoms of bromine and 0.1 x 10-6 to 1 x 10-6 gram atoms of an iron halide per 1 cm3 of inner volume of the luminous tube 1. Thus a super high pressure mercury lamp having a ratio of 0.5 to 1.5 of the distance between electrodes to the inner diameter of the luminous tube can hold a vapor pressure on the order of ten atoms within the luminous tube when it is iluminated and the super high pressure mercury lamp can be iluminated at a tube wall load of above 35 W/cm2. For example, within the luminous tube 1 are sealed 40 Torr of Ar (at room temperature), 59. 7 x 10-6 gram atoms of Hg, 3.14 x 10-6 gram atoms of Br and 0.51 x 10-6 of Fe per 1 cm3 of the inner volume thereof to provide a super high pressure mercury lamp having a tube wall load of about 85 W/cm2.
COPYRIGHT: (C)1979,JPO&Japio
JP5928478A 1978-05-18 1978-05-18 Super high pressure mercury lamp Pending JPS54150873A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5928478A JPS54150873A (en) 1978-05-18 1978-05-18 Super high pressure mercury lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5928478A JPS54150873A (en) 1978-05-18 1978-05-18 Super high pressure mercury lamp

Publications (1)

Publication Number Publication Date
JPS54150873A true JPS54150873A (en) 1979-11-27

Family

ID=13108929

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5928478A Pending JPS54150873A (en) 1978-05-18 1978-05-18 Super high pressure mercury lamp

Country Status (1)

Country Link
JP (1) JPS54150873A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5394059A (en) * 1991-11-21 1995-02-28 Oshiodenki Kabushiki Kaisha Metallic vapor discharge lamp and a method for curing paints and inks therewith
EP0605248A3 (en) * 1992-12-28 1995-09-06 Toshiba Lighting & Technology Metal halide discharge lamp suitable for an optical light source.
US6667575B2 (en) 2000-03-15 2003-12-23 Nec Microwave Tube, Ltd. High pressure discharge lamp with reduced bulb thickness

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5044675A (en) * 1973-08-24 1975-04-22
JPS51121987A (en) * 1975-04-18 1976-10-25 Iwasaki Electric Co Ltd High pressure mercury-arc lamp

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5044675A (en) * 1973-08-24 1975-04-22
JPS51121987A (en) * 1975-04-18 1976-10-25 Iwasaki Electric Co Ltd High pressure mercury-arc lamp

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5394059A (en) * 1991-11-21 1995-02-28 Oshiodenki Kabushiki Kaisha Metallic vapor discharge lamp and a method for curing paints and inks therewith
EP0605248A3 (en) * 1992-12-28 1995-09-06 Toshiba Lighting & Technology Metal halide discharge lamp suitable for an optical light source.
US5479065A (en) * 1992-12-28 1995-12-26 Toshiba Lighting & Technology Corporation Metal halide discharge lamp suitable for an optical light source having a bromine to halogen ratio of 60-90%, a wall load substantially greater than 40 W/cm2, and a D.C. potential between the anode and cathode
US6667575B2 (en) 2000-03-15 2003-12-23 Nec Microwave Tube, Ltd. High pressure discharge lamp with reduced bulb thickness

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