Fill for high temperature tungsten-halogen lamps
Tungsten-halogen lamps capable of satisfactory operation at relatively high temperatures exceeding 250 DEG C which comprise a high temperature glass or quartz envelope enclosing a tungsten filament and molybdenum, contain a fill comprising a mixture of noble gas, hydrogen, phosphorus, chlorine, and...
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| Format: | Patent |
| Sprache: | eng ; fre ; ger |
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| Zusammenfassung: | Tungsten-halogen lamps capable of satisfactory operation at relatively high temperatures exceeding 250 DEG C which comprise a high temperature glass or quartz envelope enclosing a tungsten filament and molybdenum, contain a fill comprising a mixture of noble gas, hydrogen, phosphorus, chlorine, and bromine. In a preferred embodiment the chlorine and bromine will be supplied by a single carbon atom hydrocarbon compound containing both halogens such as CHCl2Br and CH2BrCl. |
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