| 摘要 |
PURPOSE:To reduce the time necessary for rising of optical output during reignition by installing an amalgam in an amalgam container having a small hole with an area of 0.1mm.<2> or less and installing the amalgam container in an exhaust tube. CONSTITUTION:An amalgam container 20 is formed by a bottomed cylindrical glass tube having a smaller inner diameter than an exhaust tube 18. After an amalgam formation metallic body 19 is installed in the glass tube, its opening is fused and a minute hole 23 markedly smaller than the opening 22 of the exhaust tube 18 is formed in the fused area. The thus formed amalgam container 20 is installed in the exhaust tube 18 in such a manner as to locate the minute hole 23 at the bottom of the container 20. Owing to the above constitution, mercury can be retained within an emission tube over a long time after the lamp is suppressed, thereby widely reducing the time necessary for rising of optical output. |
