本文介绍一种新型高压钠灯,它具有高的显色性,一般达到R_a=50～60;有105～130流明/瓦的高光效(220瓦～660瓦);并能在普通汞灯的镇流器上使用,由外泡壳内的双金属起动器起动。高压惰性气体氙,由于降低了电弧的总热传导率,故对于获得这种新灯起了主导作用。主要由A1_2O_3及CaO组成的对高温钠很稳定的新型封接玻璃以及为改进灯在工作时之电压上升而新设计的电极,有利于这种灯的实现。 This article describes a new type of high-pressure sodium lamp, which has high color rendering properties, generally reaching R_a = 50 ~ 60; 105 ~ 130 lumens / watt of high luminous efficiency (220 watts ~ 660 watts); Flow on the use of the outer shell by the bimetallic starter. Xenon, a high-pressure inert gas, has played a leading role in obtaining this new lamp because it reduces the overall thermal conductivity of the arc. The new sealing glass, composed mainly of A1_2O_3 and CaO, which is stable to high-temperature sodium, and the newly designed electrode to improve lamp voltage during operation are beneficial to the realization of this lamp.