专利名称：Discharge lamp device
发明人：Iwaya, Shouichi,Masumura, Hitoshi,Hamada,
Munemitsu
申请号：EP87108321.8申请日：19870609公开号：EP0249196A3公开日：19900404
摘要：A discharge lamp device includes a tube, and a cathode disposed in said tubeand made of a valence-compensated semiconductor ceramic material, or a forciblyreduced semiconductor ceramic material, or a valence-compensated and forcibly reducedsemiconductor ceramic material. Since the cathode does not include an electron-emittingmaterial, but uses a semiconductor ceramic material, no vapor is produced by thecathode or the cathode does not react with mercury vapor filled in the tube. Therefore,the discharge lamp device has improved characteristics such as heat resistance, chemicalresistance, and discharge characteristics. The discharge lamp device is less costly becausethe semiconductor ceramic material used as the cathode is inexpensive.
申请人：TDK Corporation
地址：13-1, Nihonbashi 1-chome Chuo-ku, Tokyo-to 103 JP
国籍：JP
代理机构：Steinmann, Otto C., Dr.
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