发明名称 |
METAL HALIDE LAMP AND VEHICLE HEADLAMP |
摘要 |
The invention relates to a metal halide lamp for a vehicle headlamp comprising a cylindrically-shaped discharge vessel (23) having a ceramic wall which encloses a discharge space comprising Xe and ionizable filling, and a cylindrically-shaped outer bulb (21) surrounding the discharge vessel (23). According to the invention a portion (25, 26) of the surface of the outer bulb (21) facing away from the discharge vessel (23) is shaped as a negative lens. Preferably, the portion (25, 26) encompasses a segment of the outer bulb (21) with a segment angle α in the range between 30≦̸α≦̸60°. Preferably, the portion (25) forming the negative lens is shaped as a flat surface. |
申请公布号 |
EP1631979(A2) |
申请公布日期 |
2006.03.08 |
申请号 |
EP20040731444 |
申请日期 |
2004.05.06 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
ANSEMS, JOHANNES, P., M.;HENDRICX, JOSEPHUS, C., M.;MULLER, HERMAN |
分类号 |
H01J61/33;F21S8/10;H01J61/02;H01J61/34;H01J61/82;H01J61/84 |
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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