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    • 1. 发明授权
    • High pressure sodium vapor discharge lamp
    • 高压钠蒸汽放电灯
    • US5434473A
    • 1995-07-18
    • US206299
    • 1994-03-04
    • Zsolt Marton
    • Zsolt Marton
    • H01J61/22H01J61/82H01J17/26
    • H01J61/825H01J61/22
    • This invention relates to a high pressure sodium vapor discharge lamp the discharge space of which is enclosed by a ceramic vessel having hermetically sealed ceramic end members with electric lead wires connected with electrodes inside the discharge vessel and the discharge vessel contains sodium, noble gas, mercury in a concentration of 0-5 mg/cm.sup.3 and at least one further metal additive having a vapor pressure not exceeding 7.5 torr at 1000K temperature. The discharge lamp according to the invention is further characterized in that the molar fraction of sodium in the total metal additive exceeds 0.5 and the molar fraction of sodium is greater than four times the molar fraction of mercury.
    • 本发明涉及一种高压钠蒸气放电灯,其放电空间由陶瓷容器封闭,陶瓷容器具有气密密封的陶瓷端部件,电极与电极连接,放电容器内装有钠,惰性气体,汞 浓度为0-5mg / cm3和至少一种在1000K温度下蒸气压不超过7.5托的另外的金属添加剂。 根据本发明的放电灯的特征还在于,总金属添加剂中钠的摩尔分数超过0.5,钠的摩尔分数大于汞的摩尔分数的四倍。