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    • 1. 发明授权
    • Hollow electrodes for low pressure discharge lamps, particularly narrow
diameter fluorescent and neon lamps and lamps containing the same
    • 用于低压放电灯的空心电极,特别是窄直径的荧光灯和霓虹灯以及含有它们的灯
    • US6037714A
    • 2000-03-14
    • US581236
    • 1995-12-29
    • Vivek MehrotraThomas F. McGeeSusan McGeeJeroen LangevoortEdward Young
    • Vivek MehrotraThomas F. McGeeSusan McGeeJeroen LangevoortEdward Young
    • H01J61/06H01J61/067H01J61/09H01J61/36H01J61/78
    • H01J61/0677H01J61/067H01J61/09H01J61/36
    • Novel emitter materials, electrode assemblies amd lamps comprising the same are provided in which, in accordance with the invention, novel electrodes are provided having a lamp electrode structure, preferably including a hollow ferrule for sealing in a lamp to permit evacuation; an emitter material of the invention on at least one surface thereof, preferably on a protrusion attached to the hollow ferrule; a thermal isolator, preferably in the form of a low thermal conductivity wire or an incised or cut-out portion of the hollow ferrule body, for thermally isolating the protrusion from the ferrule to maintain a sufficiently high temperature for thermionic emission, and further comprising an emitter material requiring no in-lamp processing. The emitter materials are a mixed oxide of Ba, Sr and mixtures thereof with one or more of the metals from the series comprising Ta, Ti, Zr, Sc, Y, and La, are preferably selected from the group consisting of Ba.sub.4 Ta.sub.2 O.sub.9, Ba.sub.5 Ta.sub.4 O.sub.15, BaY.sub.2 O.sub.4, BaCeO.sub.3, Ba.sub.x Sr.sub.1-x Y.sub.2 O.sub.4, Ba.sub.2 TiO.sub.4, BaZrO.sub.3, Ba.sub.x Sr.sub.1-x TiO.sub.3, and Ba.sub.x Sr.sub.1-x ZrO.sub.3, wherein x ranges from a value of 0 to 1, and are most preferably one or more mixed oxides selected from the group consisting of Ba.sub.4 Ta.sub.2 O.sub.9, BaY.sub.2 O.sub.4, BaCeO.sub.3, Ba.sub.0.5 Sr.sub.0.5 Y.sub.2 O.sub.4, Ba.sub.0.75 Sr.sub.0.25 Y.sub.2 O.sub.4, Ba.sub.2 TiO.sub.4, BaZrO.sub.3, Ba.sub.0.5 Sr.sub.0.5 TiO.sub.3, and Ba.sub.0.5 Sr.sub.0.5 ZrO.sub.3.
    • 提供了新的发射体材料,包括它们的电极组件amd灯,其中根据本发明提供了具有灯电极结构的新型电极,优选地包括用于密封灯以便排空的中空套圈; 本发明的发射体材料在其至少一个表面上,优选地在连接到中空套圈的突起上; 优选为导热性较弱的导线或中空套管主体的切口或切口部分的热隔离器,用于将突起与套圈热隔离以保持足够高的热离子发射温度,并且还包括 发射体材料不需要灯管内加工。 发射极材料是Ba,Sr的混合氧化物及其与一种或多种来自包含Ta,Ti,Zr,Sc,Y和La的系列的金属的混合物,优选选自Ba4Ta2O9,Ba5Ta4O15, BaY2O4,BaCeO3,BaxSr1-xY2O4,Ba2TiO4,BaZrO3,BaxSr1-xTiO3和BaxSr1-xZrO3,其中x为0至1,最优选为选自Ba4Ta2O9,BaY2O4中的一种或多种混合氧化物 ,BaCeO3,Ba0.5Sr0.5Y2O4,Ba0.75Sr0.25Y2O4,Ba2TiO4,BaZrO3,Ba0.5Sr0.5TiO3,Ba0.5Sr0.5ZrO3。
    • 2. 发明授权
    • Gas discharge lamp having an electrode with a low heat capacity tip
    • 气体放电灯具有具有低热容量尖端的电极
    • US5905339A
    • 1999-05-18
    • US764700
    • 1996-12-04
    • Hui-Meng ChowJose AzevedoSusan McGee
    • Hui-Meng ChowJose AzevedoSusan McGee
    • H01J61/06H01J61/067H01J61/09H01J61/36H01J61/78
    • H01J61/0677H01J61/067H01J61/09H01J61/36
    • An electric gas discharge lamp includes an electrode having a tip portion comprised by a mesh body carrying an emitter material. The mesh body in a favorable embodiment is circular cylindrical and is attached via an electrically conductive thermal isolator to a conductive feed-through, such as a hollow ferrule, extending through a seal of the lamp vessel. As compared to a continuous walled tip portion of similar shape and material, the mesh body has a lower mass and heat capacity, and can therefore be operated at higher temperatures without increasing the temperature of the seal area. The higher operating temperature of the tip portion promotes greater electron emission from the emitter material, and therefore a lower cathode fall. A lower cathode fall enables the lamp to be operated at higher lamp currents for greater light output. The mesh body also has the capability to reduce sputtering from the electrode through improved adhesion of the emitter material to the tip portion and faster attainment of its nominal operating temperature as compared to a smooth continuous walled body. In a favorable embodiment, the lamp is a low pressure discharge lamp having an inside diameter of less than about 5 mm.
    • 电气放电灯包括具有由承载发射体材料的网状体构成的尖端部分的电极。 在有利的实施例中的网状体是圆柱形的并且通过导电隔热器附接到延伸穿过灯泡的密封件的导电馈通,例如中空的套圈。 与具有类似形状和材料的连续的壁顶部相比,网状体具有较低的质量和热容量,因此可以在较高温度下操作而不增加密封区域的温度。 尖端部分的较高工作温度促进发射体材料的更大的电子发射,因此下部阴极下降。 较低的阴极下降使灯可以在更高的灯电流下工作,以获得更大的光输出。 与光滑的连续壁体相比,网状体还具有通过改善发射体材料对尖端部分的附着力和更快地达到其标称操作温度来减少从电极溅射的能力。 在有利的实施例中,灯是内径小于约5mm的低压放电灯。
    • 4. 发明授权
    • Hollow electrodes for low pressure discharge lamps, particularly narrow
diameter fluorescent and neon lamps and lamps containing the same
    • 用于低压放电灯的空心电极,特别是窄直径的荧光灯和霓虹灯以及含有它们的灯
    • US5982097A
    • 1999-11-09
    • US581237
    • 1995-12-29
    • Vivek MehrotraThomas F. McGeeSusan McGeeJeroen LangevoortEdward Young
    • Vivek MehrotraThomas F. McGeeSusan McGeeJeroen LangevoortEdward Young
    • H01J61/067H01J61/04
    • H01J61/0677
    • Novel emitter materials, electrode assemblies amd lamps comprisinfg the same are provided in which, in accordance with the invention, novel electrodes are provided having a lamp electrode structure, preferably including a hollow ferrule for sealing in a lamp to permit evacuation; an emitter material of the invention on at least one surface thereof, preferably on a protrusion attached to the hollow ferrule; a thermal isolator, preferably in the form of a low thermal conductivity wire or an incised or cut-out portion of the hollow ferrule body, for thermally isolating the protrusion from the ferrule to maintain a sufficiently high temperature for thermionic emission, and further comprising an emitter material requiring no in-lamp processing. The emitter materials are a mixed oxide of Ba, Sr and mixtures thereof with one or more of the metals from the series comprising Ta, Ti, Zr, Sc, Y, and La, are preferably selected from the group consisting of Ba.sub.4 Ta.sub.2 O.sub.9, Ba.sub.5 Ta.sub.4 O.sub.15, BaY.sub.2 O.sub.4, BaCeO.sub.3, Ba.sub.x Sr.sub.1-x Y.sub.2 O.sub.4, Ba.sub.2 TiO.sub.4, BaZrO.sub.3, Ba.sub.x Sr.sub.1-x TiO.sub.3, and Ba.sub.x Sr.sub.1-x ZrO.sub.3, wherein x ranges from a value of 0 to 1, and are most preferably one or more mixed oxides selected from the group consisting of Ba.sub.4 Ta.sub.2 O.sub.9, BaY.sub.2 O.sub.4, BaCeO.sub.3, Ba.sub.0.5 Sr.sub.0.5 Y.sub.2 O.sub.4, Ba.sub.0.75 Sr.sub.0.25 Y.sub.2 O.sub.4, Ba.sub.2 TiO.sub.4, BaZrO.sub.3, Ba.sub.0.5 Sr.sub.0.5 TiO.sub.3, and Ba.sub.0.5 Sr.sub.0.5 ZrO.sub.3.
    • 提供了新的发射体材料,包括其的电极组件amd灯,其中根据本发明,提供了具有灯电极结构的新型电极,优选地包括用于密封灯以便排空的中空套圈; 本发明的发射体材料在其至少一个表面上,优选地在连接到中空套圈的突起上; 优选为导热性较弱的导线或中空套管主体的切口或切口部分的热隔离器,用于将突起与套圈热隔离以保持足够高的热离子发射温度,并且还包括 发射体材料不需要灯管内加工。 发射极材料是Ba,Sr的混合氧化物及其与一种或多种来自包含Ta,Ti,Zr,Sc,Y和La的系列的金属的混合物,优选选自Ba4Ta2O9,Ba5Ta4O15, BaY2O4,BaCeO3,BaxSr1-xY2O4,Ba2TiO4,BaZrO3,BaxSr1-xTiO3和BaxSr1-xZrO3,其中x为0至1,最优选为选自Ba4Ta2O9,BaY2O4中的一种或多种混合氧化物 ,BaCeO3,Ba0.5Sr0.5Y2O4,Ba0.75Sr0.25Y2O4,Ba2TiO4,BaZrO3,Ba0.5Sr0.5TiO3,Ba0.5Sr0.5ZrO3。