Patent ID: 6262533
Filing Date: 2001-07-17
Classification: H01J

Abstract:
A high pressure discharge lamp comprising:a vessel made of a non-conductive material which forms an inner space filled with an ionizable light-emitting material and a starting gas, said vessel having first and second opening portions at opposite ends thereof, respectively;a non-conductive member inserted into said first opening portion of the vessel and having an outer diameter which is smaller than an inner diameter of said first opening portion so as to form a gap between the vessel and the non-conductive member, said non-conductive member further having a hole;an electrode unit inserted into said hole of the non-conductive member, said electrode unit having a first end which is exposed to the inner space of the vessel, and a second end which is exposed to outside of the vessel; anda starting electrode arranged in said gap between the vessel and the non-conductive member, and having a first end which is exposed to the inner space, and a second end which is exposed to outside of the vessel;said vessel, said non-conductive member and said starting electrode being an integrated body formed by a co-firing process.