Ngk Insulators, Inc.

Tsutomu Kondo

Norikazu Niimi

Go Suzuki

The high pressure discharge lamp comprises a ceramic discharge tube containing an ionizable luminescent material and a starting gas filled in the inner space thereof, a clogging member having through-holes and at least a portion of which being fixed on the inner side of the end portion of the ceramic discharge tube, an electric conductor having an electrode system inserted in the through-holes of the clogging member, and a sealing material layer. Preferably, the sealing material layer 16A is made of a metallizing layer. In addition, the high pressure discharge-lamp comprises the ceramic discharge tube, the clogging member, the electric conductor inserted in the through-holes of the clogging member, and a metallizing layer for sealing provided so as to join to the clogging member and the electric conductor.

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Tsuru, Japan

Tsutomu Kondo