DISCHARGE LAMP LIGHTING APPARATUS

摘要

A discharge lamp light apparatus, which uses the dielectric barrier discharge, comprises a lighting circuit (20) that applies a high frequency voltage having a rectangular waveform to a discharge lamp (10) to vary a time ratio of lighting-on and lighting-off time periods established for the discharge lamp, thereby providing a modulated light; and an inductive element (30) that is connected in series between the discharge lamp (10) and the lighting circuit (20) and that has an impedance value between 200 ohms and 22 kilo-ohms at a frequency of 100 MHz. The inductive element (30) suppresses the inrush current flowing into the discharge lamp (10) during providing the modulated light, thereby reducing unwanted radiant noise.