| 摘要 |
A method for removing contaminants from an arc tube includes introducing an inert gas into the arc tube through a conduit extending through the lamp tubulation and exhausting the gas through the space between the conduit and the wall of the lamp tubulation. Contaminated gas thereby always flows away from the arc tube. The arc tube can be heated during the gas flushing process to release adsorbed water and vaporize volatile oxides. Gas is preferably flushed through the lamps tubulation during and after press sealing of electrodes into the arc tube to remove contaminants introduced during press sealing.
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