ELECTRODE FOR HIGH PRESSURE DISCHARGE LAMP, HIGH PRESSURE DISCHARGE LAMP, AND METHOD FOR MANUFACTURING ELECTRODE FOR HIGH PRESSURE DISCHARGE LAMP

摘要

Provided is an electrode for a high-pressure discharge lamp, which eliminatesspring-back of an electrode coil, andhas high productivity and high coil aligning accuracy. The electrode for thehigh-pressure discharge lamp is composed of an electrodecore bar (30) and a coil (35) mounted on the electrode core bar. The electrodecore bar (30) is composed of a small-diametersection (31) on the power supply side and a large-diameter section (32) on theleading end side. The large-diameter section(32) has a large-diameter section (32a) on the small-diameter section side, asmall-diameter section (32b) having an outer diametersmaller than that of the large-diameter section and forming a step (s) withthe large-diameter section, and a leading end section(32c) The coil (35) is covered between the step (s) and the leading endsection.