公开(公告)号：US5629585A

公开(公告)日：1997-05-13

申请号：US510185

申请日：1995-08-02

Applicant: Bernhard Altmann ,  Juergen Begemann ,  Juergen Maier ,  Andreas Ponnier ,  Ralf Seedorf

Inventor： Bernhard Altmann ,  Juergen Begemann ,  Juergen Maier ,  Andreas Ponnier ,  Ralf Seedorf

IPC: H01J61/02 ,  H01J61/073 ,  H01J61/16 ,  H01J61/20 ,  H01J61/82 ,  H01J17/20 ,  H01J17/04 ,  H01J61/04 ,  H01J61/12

CPC classification number: H01J61/025 ,  H01J61/073 ,  H01J61/0735 ,  H01J61/16 ,  H01J61/20 ,  H01J61/82

Abstract: To improve the arc stability of high-pressure discharge lamps, particularlyf power ratings of up to about only 250 W, the cathode (4) is formed as an elongated, essentially cylindrical base body (8) having a tapering, conical region (9) terminating in a tip (10). The base body (8), only, is covered with a carbide coating along its length, except for an end portion for electrical connection; the carbide coating starts at the junction or transition between the cylindrical base body portion and the conical end portion. This cathode construction is easier and cheaper to make than prior art cathodes, by coating an essentially cylindrical cathode and then etching or grinding and polishing the tapering end region (9). The electrode is preferably made essentially of tungsten, doped with thorium oxide present up to about 0.6%, optionally also potassium, aluminum and silicon in tiny amounts. The electrode spacing is between 0.4 to 0.8 mm, and when used as a mercury high-pressure discharge lamp, filled with 70 to 130 mg per cubic centimeter mercury; when used as a xenon lamp, the xenon fill is preferably present at a cold fill pressure of between about 2 and 15 bar.

Abstract translation: 为了提高高压放电灯的电弧稳定性，特别是功率额定值高达约250W的电弧稳定性，阴极（4）形成为具有锥形圆锥形区域（9）的细长的基本上圆柱形的基体（8） ）终止在尖端（10）中。 除了用于电连接的端部部分之外，基体（8）仅沿着其长度覆盖碳化物涂层; 碳化物涂层从圆筒形基体部分和锥形端部之间的接合或过渡开始。 这种阴极结构比现有技术的阴极通过涂覆基本上圆柱形的阴极然后蚀刻或研磨和抛光锥形端部区域（9）更容易和更便宜。 电极优选基本上由钨制成，掺杂有高达约0.6％的氧化钍，任选地还含有少量的钾，铝和硅。 电极间距在0.4〜0.8mm之间，当用作汞高压放电灯时，填充70〜130mg /立方厘米汞柱; 当用作氙气灯时，氙气填充物优选以约2至15巴的冷填充压力存在。

公开(公告)号：US5493168A

公开(公告)日：1996-02-20

申请号：US51047

申请日：1993-04-21

Applicant: Ralf Seedorf

Inventor： Ralf Seedorf

IPC: H01J61/073 ,  H01J61/36 ,  H01J61/52 ,  H01J7/26 ,  H01J1/02

CPC classification number: H01J61/523

Abstract: To prevent corrosion of molybdenum connecting pins or wires extending fromelt-sealed ends of high-power lamps, the region immediately adjacent the exit points from the melt-sealed end are cooled by a cooling gas, for example air or an inert gas such as nitrogen. The cooling gas is applied by cooling ducts which are made of metal and, simultaneously, provide for electrical connection of electrical energy to the connecting leads. Cooling gas can be introduced either through terminal pins or rods into the tubular elements, or the tubular elements can be connected, as usual, to the part-solid terminal pins or rods and additional gas connections are passed through the base through the tubular elements to supply cooling gas.

Abstract translation: 为了防止从高功率灯的熔融密封端延伸的钼连接销或电线的腐蚀，紧邻熔融密封端的出口点附近的区域被冷却气体例如空气或惰性气体例如 氮。 冷却气体通过由金属制成的冷却管道施加，并且同时提供电能连接到连接引线。 冷却气体可以通过端子销或杆引入到管状元件中，或者管状元件可以像往常一样连接到部分实心端子销或杆，并且附加的气体连接通过管状元件穿过基座， 供应冷却气体。

公开(公告)号：US06573657B2

公开(公告)日：2003-06-03

申请号：US10013503

申请日：2001-12-13

Applicant: Thomas Mehr ,  Ralf Seedorf

Inventor： Thomas Mehr ,  Ralf Seedorf

IPC: H01J6106

CPC classification number: H01J61/073

Abstract: In a short-arc high-pressure discharge lamp (1) with a xenon fill for digital projection purposes, the separation L in mm of the two mutually facing end sections (6a, 8c) of the cathode (6) and the anode (8) when the lamp is hot is given by the relationship 0.8×P≦L≦1×P+1, where P is the lamp power in kW. Further, the diameter D of the circular-cylindrical middle section (8a) of the anode (8) in mm obeys the relationship D≧2.1×L+10.