Discharge lamp lighting method and discharge lamp lighting apparatus

摘要

The present invention relates to a discharge lamp lighting method and a discharge lamp lighting apparatus that achieve a reduction in the extent of lamp flickering by adopting a relatively simple circuit structure. A power supply unit 1 supplies AC power (Po) to a discharge lamp 3, and a control unit 2 implements control on the power supply unit 1 so as to gradually increase the instantaneous value of the AC power (Po) during a half cycle (tau/2) of an AC pulse current (Io) as the time elapses from the rise of the half cycle (tau/2) toward an end of the half cycle.