Patent ID: 6224449
Filing Date: 2001-05-01
Classification: H01J

Abstract:
A process for producing a high pressure discharge lamp comprising a ceramic discharge tube having an inner space filled with an ionizable light-emitting material and a starting gas, plugging members each at least partially fixed to an inner side of respective one of end portions of the ceramic discharge tube and each having a through-hole provided therein, conductive members inserted into or through the through-holes of the plugging members, respectively, and electrode units provided in said inner space, wherein material of the plugging members is the same as that of the ceramic discharge tube, said process comprising the steps of:inserting the conductive members into or through through-holes of non-fired preforms of the respective plugging members;providing metallizing layers between the through-holes of the non-fired preforms and the respective conductive members; andthen integrally firing the non-fired preforms, the metallizing layers, and the conductive members.