发明名称 |
Ultra-high pressure discharge lamp lighting method, ultra-high pressure discharge lamp to which the method is applicable and ballast for use therein, and lighting system incorporating the lamp and the ballast |
摘要 |
There is provided a novel method of lighting an ultra-high pressure discharge lamp (A1) having a discharge bulb (1) made of quartz glass in which a pair of electrodes (2) and (3) are disposed facing each other, the method including: lighting the lamp with alternating current; and providing a time period of at least one second for which the alternating current assumes a lighting frequency of 5 Hz or lower during a period for which the lamp lights, wherein the electrodes (2) and (3) each have a current withstanding capability against a current 1.5 times or more as high as a current value at which the lamp lights stably. This method enables the ultra-high pressure discharge lamp to have a longer life and exhibit a higher luminance.
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申请公布号 |
US2002105288(A1) |
申请公布日期 |
2002.08.08 |
申请号 |
US20010906713 |
申请日期 |
2001.07.18 |
申请人 |
PHOENIX ELECTRIC CO., LTD. |
发明人 |
NAKAGAWA ATSUJI;HUJII TOSHITAKA;HURUKAWA HISAO;IKEDA TOMIHIKO;SHIRAI TETSUYA |
分类号 |
H05B41/00;H01J61/88;H05B41/16;H05B41/288;H05B41/292;H05B41/38;(IPC1-7):H05B37/02 |
主分类号 |
H05B41/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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