发明名称 |
High-pressure discharge lamp. |
摘要 |
<p>A high-pressure discharge lamp of the invention comprises a ceramic discharge vessel (10) in which a first and a second electrode (40a, 40b) are arranged and which encloses a discharge space (11) which is provided with a filling containing a metal halide. The discharge vessel (10) has a central zone (20) between the electrodes (40a, 40b) and a first and a second cylindrical end zone (30a, 30b) which each surround a current supply conductor (50a, 50b) is connected to a respective electrode (40a, 40b). At least the first end zone (30a) has a diameter smaller than the smallest diameter of the central zone (20). The current supply conductor (50a) through the first end zone (30a) has a halide resistant portion (51a) which faces the discharge space (11) and a portion (52a) permeable to hydrogen and oxygen and facing away from the discharge space (11). The halide resistant portion (51a) extends through the first end zone (30a) over a distance that is at least the inner diameter D of the first end zone (30a) augmented by 2 mm. Furthermore, the current supply conductor (50b) through the second end zone (30b) has a halide resistant portion (51b) which faces the discharge space (11). The construction allows for a sufficient reduction of the amount of hydrogen and oxygen in the discharge vessel (10), while corrosive attack of the current supply conductors (50a, 50b) by halides is prevented. <IMAGE></p> |
申请公布号 |
EP0587238(A1) |
申请公布日期 |
1994.03.16 |
申请号 |
EP19930202553 |
申请日期 |
1993.09.01 |
申请人 |
PHILIPS ELECTRONICS N.V. |
发明人 |
GEVEN, ANDREAS SEBASTIANUS GERTRUDIS;RENARDUS, MAX LEO PIETER;SEINEN, PETER AREND;STOFFELS, JAN ALFONS JULIA;WIJENBERG, CHRISTOFFEL;DIELIS, HARALD RENE |
分类号 |
H01J61/36;(IPC1-7):H01J61/36 |
主分类号 |
H01J61/36 |
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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