Metal halide lamp
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United States of America Patent
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May 18, 2004
Grant Date -
N/A
app pub date -
Aug 24, 2000
filing date -
Aug 25, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a metal halide lamp having a nominal power of more than 100 W, comprising a discharge vessel with a ceramic wall. The discharge vessel encloses a discharge space having an ionizable filling which, in addition to Hg, contains a quantity of iodide of Na, Tl, Ho and Ca. Two electrodes each having an electrode tip at a mutual distance EA are arranged inside the discharge vessel. The discharge vessel has a cylindrical part with an internal diameter ID and extends through at least the distance EA. According to the invention, the relation EA/ID<1 is satisfied.
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