High-pressure discharge lamp having seal with external antenna
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United States of America Patent
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May 13, 2003
Grant Date -
N/A
app pub date -
Jun 16, 2000
filing date -
Jun 16, 1999
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention relates to a high-pressure discharge lamp provided with a discharge vessel made of glass which encloses a discharge space having an ionizable filling and an electrode. The discharge vessel is provided with a seal which encloses an Mo foil having knife edges and forms a feedthrough for an electric conductor to the electrode. At the location of the foil, the seal has a gastight sealed cavity and a first antenna on the outer side of the cavity. Preferably, a second antenna is placed at the neck where the seal is connected to the discharge vessel. This reduces both hot restrike voltage and hot restrike delay.
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