JPS54150873A - Super high pressure mercury lamp - Google Patents
Super high pressure mercury lampInfo
- 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
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
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)
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)
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 |
-
1978
- 1978-05-18 JP JP5928478A patent/JPS54150873A/en active Pending
Patent Citations (2)
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)
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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