| 摘要 |
PROBLEM TO BE SOLVED: To provide a light source device for improving certainly starting performance of the lamp by irradiating ultraviolet rays of required sufficient quantity on the discharge container even at the hot time immediately after turning off the high-pressure discharge lamp, by a starting light source with a simple structure of reasonable manufacturing cost. SOLUTION: The starting light source 3, which irradiates ultraviolet rays for improving starting performance to a discharge container when starting lighting of the high-pressure discharge lamp 1, is composed of a discharge tube 18 which is connected in parallel to a lighting circuit of the lamp 1, and either one or both of a base end side exposed end part 19c and a tip part 19b of the internal electrode of the discharge tube 18 are installed at a position opposed to an end face 10 of an electrode sealing portion 9L of the lamp 1 inserted into the bottom hole 14 of a concave reflector 2. COPYRIGHT: (C)2011,JPO&INPIT |
