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    • 1. 发明授权
    • High pressure discharge lamp of the short arc type
    • 短弧型高压放电灯
    • US06683413B2
    • 2004-01-27
    • US10089687
    • 2002-04-03
    • Keisuke OkuboMitsuru IkeuchiShoji Miyanaga
    • Keisuke OkuboMitsuru IkeuchiShoji Miyanaga
    • H01J61073
    • H01J61/0732H01J61/86
    • The object of the invention is to improve the thermal radiation characteristic of the electrodes in a high pressure discharge lamp of the short arc type in which the input power has been increased in order to increase the amount of radiant light, and to reduce the electrode temperature with high efficiency. The object is achieved as claimed in the invention in a high pressure discharge lamp of the short arc type in the emission tube of which there is a pair of electrodes, in that at least part of the sides of the above described electrodes is provided with a groove area, that the depth D of this groove area is within 12% of the electrode diameter and that the relation D/P is between the depth D of the groove area and the pitch P between the grooves is greater than or equal to 2.
    • 本发明的目的是提高在增加输入功率的短弧型高压放电灯中的电极的热辐射特性,以增加辐射光的量,并且降低电极温度 具有高效率。本发明的目的是在具有一对电极的发射管中的短弧型高压放电灯中实现,其中上述电极的至少一部分侧面 设置有沟槽区域,该沟槽区域的深度D在电极直径的12%以内,并且关系D / P在沟槽区域的深度D和沟槽之间的间距P之间的关系D / P大于或等于 等于2。
    • 3. 发明授权
    • Short arc discharge lamp
    • 短弧放电灯
    • US06844678B2
    • 2005-01-18
    • US09962455
    • 2001-09-26
    • Tuneo OkanumaKeisuke Okubo
    • Tuneo OkanumaKeisuke Okubo
    • H01J61/06G03F7/20H01J61/073H01J61/88H01J17/04
    • G03F7/70016H01J61/0737
    • A short arc discharge lamp in which the wear on the cathode tip area is suppressed, in which moreover in the arc discharge only little polarization occurs and flickering in the arc discharge occurs only rarely, and thus, a reduction of illuminance or flickering on the light irradiation surface of a device or the like in which the short arc discharge lamp has been installed is prevented. Furthermore, a short arc discharge lamp is devised in which the radiance is hardly impaired and stable light emission is enabled, even when it is operated over a long time. To obtain these advantages, a short arc discharge lamp which has an essentially spherical arc tube in which there are a cathode and an anode opposite one another, is provided with a cathode in which the cathode tip area has a crystal structure formed of several crystals which, as compared to the crystal size in the back end area of the cathode, are coarsened, and in which the emissive material contained in the cathode tip area is less than or equal to 0.1% by mass.
    • 一种短电弧放电灯,其中抑制了阴极尖端区域的磨损,此外在电弧放电中仅发生极小的极化,并且很少发生电弧放电中的闪烁,因此光的照度或闪烁的降低 防止安装有短弧放电灯的装置等的照射面被防止。 此外,即使在长时间运转的情况下,也设计了短弧放电灯,其中辐射几乎不受损,并且能够稳定发光。 为了获得这些优点,具有阴极和阳极彼此相对的基本上为球形的电弧管的短电弧放电灯设置有阴极,阴极尖端区域具有由几个晶体形成的晶体结构, 与阴极的后端区域的晶体尺寸相比,粗大化,其中包含在阴极尖端区域中的发光材料小于或等于0.1质量%。