DISCHARGE LAMP OPERATION DEVICE AND ILLUMINATION INSTRUMENT

摘要

Upon start, a discharge lamp operation device alternately outputs a section A during which a DC/AC inverter (5) outputs a high-frequency voltage so that a start circuit (6) applies a high voltage to a high-luminance discharge lamp (7) by resonance operation and a section B during which the DC/AC converter (5) applies a low-frequency rectangular voltage or a DC voltage via the start circuit (6) to the high-luminance discharge lamp (7). The section A during which a high voltage is applied by resonance operation is set to a time sufficient for performing dielectric breakdown of the high-luminance discharge lamp at an initial aging stage. A section C for alternately outputting the high-voltage generation section A and the section B for generating a low-frequency rectangular voltage or a DC voltage is set to a time sufficient for dielectric breakdown of the high-luminance discharge lamp at the end of its service life.