| 摘要 |
<p>A portable light source comprises a lamp (10) contained in a lamp box (42), which is housed in a case (41) to significantly reduce the influences of ambient temperature. In other words, the deuterium lamp (10), likely to be influenced by temperature, is enclosed in a double shield structure including the lamp box (42) and the case (41). Heat insulators (65, 74) between the case (41) and the lamp box (42) separate them from each other. As a result, the lamp box (42) containing the deuterium lamp (10) is isolated thermally from the case (41) exposed directly to the air, and the lamp box (42) is unlikely to be affected by the change in temperature of the case (41).</p> |
