| 摘要 |
<p>A flash lamp adapted to generate an arc by cooperation of a cathode (8), an anode (9), trigger probe electrodes (12, 13) and a sparkler electrode (16) which are held in a case (H) having a light projection window (4), and project the arc through the light projection window (4), wherein a mirror structure (20, 30, 40) is fixed to an inner end portion of an exhaust pipe (21, 34, 44) fixed to a central portion of a stem (6) provided in a bottom portion of the case (H). The mirror structure (20, 30, 40) is provided with a specula surface (24, 32, 42) held in the case (H) and opposed to a light projection window (4), and an exhaust passage (26, 33, 43) allowing communication of an exhaust port (21c, 34b, 44b) of the exhaust pipe (21, 34, 44) with the exterior of the mirror structure (20, 30, 40), and formed in the position in the interior of the mirror structure (20, 30, 40) which is spaced from the specular surface (24, 32, 42).</p> |
