MERCURY VAPOR DISCHARGE LAMP AND METHOD FOR ITS MANUFACTURE
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United States of America Patent
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Issued Date -
Sep 18, 2014
app pub date -
Mar 12, 2014
filing date -
Mar 14, 2013
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Conventional mercury vapor discharge lamps include a closed emitter tube made of quartz glass having an emitter tube end, a gas-tight seal in the region of the emitter tube end, and two electrodes arranged inside the emitter tube for generating a discharge in a discharge zone between the electrodes, as well as an amalgam reservoir. In order to provide a mercury vapor discharge lamp having an amalgam reservoir, which can be operated at high efficiency at variable irradiation power and also is easy and inexpensive to manufacture, an annular gap is formed in the region of the emitter tube end between a quartz glass tube and the emitter tube, and the amalgam reservoir is arranged inside the annular gap.
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