【作者】 贾华； 宦维定； 王江华； 许梦瑶； 单家芳； 刘甫坤；

【Author】 JIA Hua;HUAN Weiding;WANG Jianghua;XU Mengyao;SHAN Jiafang;LIU Fukun;Institute of Plasma Physics,Chinese Academy of Sciences;

【机构】 中国科学院等离子体物理研究所；

【摘要】 微波等离子体光源是利用射频能量通过谐振器激发气体放电的无电极光源,可辐射出接近太阳光的连续全光谱光线。本文分析了谐振器在微波光源中的作用,采用电磁场仿真计算设计了一种中空结构的440MHz陶瓷谐振器,分析了回波损耗和在灯泡内的电场分布,并将其应用于等离子体光源的测试中。在射频功率200W的下,获得了17364流明的光通量,光效86.8lm·W^-1。开展了实际户外测试,取得了显色性和节能的良好效果。本研究有利于陶瓷谐振器烧结时杂质气体排出,提高了成品率,具有较高的实用价值。更多还原

【Abstract】 Microwave Plasma lamp is an electrodeless light source that uses radio frequency energy to excite the gas discharge through a resonator and can radiate continuous full-spectrum light close to sunlight.The function of the resonator in the microwave lamp is analyzed and a 440MHz ceramic resonator with a hollow structure is designed by electromagnetic field simulation.The return loss and the electric field distribution in the bulb are analyzed and the designed ceramic resonator is applied for the test of plasma light.The luminous flux of 17364lm is obtained for the RF power of 200W,with the luminous efficiency of 86.8lm·W^-1.The actual outdoor test is carried and good results is achieved in color rendering and energy saving.This research can increase the exhaust channel during high temperature sintering,improve the yield of ceramic resonators,and has high practical value.更多还原