Patent ID: 7397189
Filing Date: 2008-07-08
Classification: G03B,H01J

Abstract:
1. A lamp device, comprising: an arc tube having a bulb portion in which a pair of electrodes is encapsulated, an electrode shaft having an electrode of the pair of electrodes at a tip end of the electrode shaft, a conductive foil in continuation with the electrode shaft, and a pair of sealing portions, each of the sealing portions having an end portion, the bulb portion interposed between the pair of sealing portions, the sealing portions sealing the electrode shaft and the conductive foil, each of which is continually formed from the bulb portion; a principal reflection mirror that fastens to one of the pair of sealing portions and reflects light exited from the arc tube toward a region that is illuminated; a sub-mirror that is fastened to the other of the pair of sealing portions and returns light exited from the bulb portion toward the principal reflection mirror; leads, each of which is connected to the conductive foil and drawn out of the end portion of each of the sealing portions; and a trigger line having a ring-like portion and a second portion, the ring-like portion being wound around the sealing portion on a side fastened to the principal reflection mirror and the second portion extending from the ring-like portion; the second portion of the trigger line that extends from the ring-like portion having a wiring path that passes a neighborhood of the bulb portion without coming into contact therewith, further extending along the sealing portion on a side that fastens the sub-mirror up to an end thereof, and being connected to one of the leads that is drawn out of the end portion; and the wiring path being in a same plane that extends through an optical axis and on the same side with respect to the optical axis so as not to cross the optical axis.