| 摘要 |
PROBLEM TO BE SOLVED: To prevent exoergic loss, enlargement, difficulty in restarting, noise and breakdown of insulation. SOLUTION: The projector is provided with a light source apparatus containing a discharge lamp Ld containing 0.15mg or more of mercury per volume for 1 cubic millimeter of discharging space, a pair of electrodes E1 and E2 with spacing between the electrodes at 2.5mm or less which are mainly for discharging and installed facing each other and an auxiliary electrode Et which is other than the electrodes mainly for discharging and provided not in contact with the discharge space mainly for discharging. A power supply circuit Bx supplying discharge current to the electrodes E1 and E2 which are mainly for discharging and a starter Ue producing high voltage between one of the both polarity electrodes E1 and E2 mainly for discharging and the auxiliary electrode Et are connected in the light source apparatus. At least a high voltage producing part Ub containing a high voltage transformer Te of the starter circuit Ue is separated from a power supply circuit (By). COPYRIGHT: (C)2006,JPO&NCIPI |
