公开(公告)号：US5864209A

公开(公告)日：1999-01-26

申请号：US739806

申请日：1996-10-30

申请人： David Lyle Clark

发明人： David Lyle Clark

IPC分类号： H01J61/067 ,  H01J61/12 ,  H01J17/04

CPC分类号： H01J61/12 ,  H01J61/067

摘要： A unique cathode (30) for an ultraviolet discharge lamp (10) is described. The cathode includes a triple-coil wire, i.e., the wire has a primary coil (43), a secondary coil (41) wound around the primary coil and a tertiary coil (36) wound around the secondary coil. The interstices of the primary coil and secondary coil, but not the tertiary coil, are occupied by a crystalline oxide emitter material. Filling the primary and secondary coils of the triple coil cathode provides a cathode having a greater amount of emitter material than prior art. In addition, as the outer layer of the emitter material sputters away from bombardment by positive ions, the remaining emitter material is protected by the now-exposed portion of the coil wire which protrudes beyond the remaining emitter material. Thus, incoming positive ions are apt to strike the exposed wire, and not the remaining emitter material.

摘要翻译： 描述了用于紫外线放电灯（10）的独特的阴极（30）。 阴极包括三线圈线，即线具有初级线圈（43），缠绕在初级线圈周围的次级线圈（41）和缠绕在次级线圈上的三级线圈（36）。 初级线圈和次级线圈的间隙而不是三次线圈被晶体氧化物发射体材料占据。 填充三线圈阴极的初级和次级线圈提供了一种具有比现有技术更大量的发射极材料的阴极。 此外，由于发射器材料的外层通过正离子溅射远离轰击，剩余的发射极材料被突出超过剩余发射极材料的线圈线的现在暴露的部分保护。 因此，进入的正离子易于撞击暴露的导线，而不是剩余的发射极材料。