DISCHARGE LAMP LIGHTING DEVICE

摘要

A changing point detecting means (101) for detecting a bulb voltage rise changing point after a discharge bulb (7) is started to be lit is provided in a control circuit (11), and, after the start of discharge bulb (7) lighting, a power control means (102) controls the supply of a first power to the discharge bulb (7). When the changing point detecting means (101) detects that the voltage of the discharge bulb (7) has exceeded a changing point, the power control means (102) supplies a second power smaller than the first power to the discharge bulb (7).