发明名称 |
DISCHARGE LAMP WITH HIGH COLOR TEMPERATURE |
摘要 |
A discharge lamp comprises a discharge vessel 20 defining a sealed inner discharge space 22 with two electrodes 24. A filling consists of a rare gas and a metal halide composition and is free of mercury. The discharge vessel 20 comprises outer grooves 36 where the electrodes 24 are embedded, arranged at a groove distance Ra between them. The discharge vessel 20 further comprises an inner diameter ID. In operation of the lamp, an arc discharge is formed between the electrodes and the metal halide composition is partly evaporated. After operation of the lamp, the metal halide composition forms a film on the inner wall of the discharge vessel 20. This film has a surface area AS measured in mm2. The metal halide composition is provided in such an amount within the discharge space 22, that a matching quotient Q, calculated as Q = Ra x ID/As has a value of 2 or more, such that a high colour temperature is achieved. |
申请公布号 |
WO2012147014(A3) |
申请公布日期 |
2013.01.17 |
申请号 |
WO2012IB51956 |
申请日期 |
2012.04.19 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V.;PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH;HAACKE, MICHAEL;PROKESCH, BERND |
发明人 |
HAACKE, MICHAEL;PROKESCH, BERND |
分类号 |
H01J61/33;H01J61/34;H01J61/82 |
主分类号 |
H01J61/33 |
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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