公开(公告)号：US20010008365A1

公开(公告)日：2001-07-19

申请号：US09759675

申请日：2001-01-12

Applicant: Toshiba Lighting and Technology Corporation

Inventor： Hisashi Honda ,  Seiji Ashida ,  Kiyoshi Saita ,  Ariyoshi Ishizaki ,  Akira Itoh ,  Shigehisa Kawatsuru ,  Tatsuo Otabe

IPC: H01J017/04 ,  H01J061/04 ,  H01J017/20

CPC classification number: H01J61/073

Abstract: A high-pressure discharge lamp which includes a light-transmitting air-tight discharge container, an electrode formed of tungsten as a main component and fixedly sealed in the discharge container, and a discharge medium containing a halide of a light emitting metal and sealed in the discharge container. The surface of the electrode is defined as follows. That is, the average value of center line average roughness Ra of the surface, is set to 0.3 nullm or less, or the average value of the center line average roughness Rz of the surface of the electrode, is set to 1.0 nullm or less, or the average value of the surface area increasing rate of the surface of the electrode is set to 1.0% or less.

Abstract translation: 一种高压放电灯，包括透光气密放电容器，以钨为主要成分并固定地密封在放电容器中的电极以及包含发光金属的卤化物并被密封在其中的放电介质 排放容器。 电极的表面定义如下。 也就是说，将表面的中心线平均粗糙度Ra的平均值设定为0.3μm以下，或将电极表面的中心线平均粗糙度Rz的平均值设定为1.0μm以下， 或将电极表面的表面积增加率的平均值设定为1.0％以下。