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MBI Metal Halide - Quartz Style
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Updated
22-VII-2006 |
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Although the origins of the metal halide lamp can be traced back to a 1912 patent taken out by GE's Charles Steinmetz, the practical lamps based on current technologies first appeared in the labs of Osram in Germany, and of GE in USA, in the late 1950s. It was not until the mid 1960s that commercial products appeared.
The technology is a development of the high pressure mercury lamp, to which trace additions of various other metals are added in the form of their halide compounds. These are vaporised into the discharge and contribute their spectral output, and materials are selected which fill in the gaps in the mercury spectrum to deliver a light source having considerably improved colour properties. The luminous efficacy of the lamps is also increased owing to a reduction in the generation of invisible ultraviolet radiation.
It is necessary to add the metals in the form of halides because the metals themselves usually have too low a vapour pressure to participate in the discharge, but the halides are vaporised very much more readily. In addition the additive metals are rather corrosive towards the quartz discharge tube wall, but when halides are employed, they always exist in compound form on the quartz surface in which state they are very much less reactive, thus minimising the corrosion problems. |
| | High Wattage Products |
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Sylvania |
400W |
| Metalarc Na-Sc lamp with flat mounting frame |
| 1965 |
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Mazda |
2000W |
| MAIH 2000 B High Wattage Metal Halide |
| 1978 |
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Narva |
400W |
| Lamp with Na-In-Tl-Li arc tube chemistry |
| 1984 |
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Thorn |
250W |
| Kolorarc MBI-T 250W tri-band metal halide |
| 1991 |
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Osram |
400W |
| HQI-T 400/DV Daylight Vertical Rare Earth |
| 1992 |
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Tungsram |
400W |
| HgMIF 400/DH Daylight Horizontal Rare Earth |
| 1992 |
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Osram |
400W |
| HQI-BT 400W / D Rare Earth short arc |
| 2001 |
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GE |
175W |
| Multi-Vapor II (Halarc) high-lumen electronic |
| 1989 |
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Thorn |
250W |
| MBIF/H/S Lithium doped for Marks & Spencer |
| 1990 |
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Iwasaki |
400W |
| Mutli-Super Ace (Teflon) Five Band Metal Halide |
| 2002 |
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Sylvania |
400W |
| Metalarc Horizontal with curved arc tube |
| 2000 |
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Sylvania |
1000W |
| Metalarc Vertical with fattened arc tube |
| 1984 |
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Philips |
1500W |
| Z-Lamp with offset arc tube for sports lighting |
| 2003 |
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Wotan |
250W |
| Integral Reflector tri-band metal halide |
| 1987 |
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Venture |
400W |
| Glare-Guard with crown silvered bulb |
| 1992 |
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Thorn |
1500W |
| MBIL/H High Wattage Double Ended Linear |
| 1988 |
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Tesla |
400W |
| RVIZ Thallium Iodide Green coloured lamp |
| 1975 |
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GEC |
400W |
| MBI/U Indium Iodide Blue coloured lamp |
| 1986 |
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Narva |
400W |
| NC400-04 Bilirubinaemia Gallium-Indium lamp |
| 1981 |
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YaMing |
250W |
| Red coloured lamp JLC250 HO Red |
| 2004 |
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| | Compact Products |
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GE |
35 / 55W |
| 'First Light' Electronic Halarc Self Ballasted |
| 1981 |
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GE |
32W |
| Halarc MXR low wattage for open fixtures |
| 1990 |
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Sylvania |
100W |
| Metalarc Low Wattage for open fixtures |
| 1986 |
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Philips |
75W |
| MHN "Thulium Lamp" High-CRI Prototype |
| 1985 |
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Philips |
70W |
| MHN-T Open Fixture Single Ended |
| 1996 |
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Osram |
150W |
| HQI-TS 150W/NDL Double Ended Compact |
| 1989 |
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Thorn |
200W |
| Arcstream MBI-T Single Ended Prototype |
| 1985 |
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Osram |
70W |
| HQI-T 70W/WDL Single Ended Compact |
| 1994 |
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Philips |
35W |
| MHN-TC Experimental Single Ended Compact |
| 1993 |
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Iwasaki |
150W |
| ColorArc 3500K with exceptionally high Ra 96 |
| 1988 |
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Iwasaki |
70W |
| ColorArc 6500K PAR36 High-CRI Metal Halide |
| 1999 |
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Sylvania |
35W |
| BriteSpot ES50 Compact Metal Halide Reflector |
| 2003 |
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