METHOD FOR PRODUCING CERAMIC TUBE AND CERAMIC TUBE

摘要

This method for producing a ceramic tube produces a single ceramic tube for a high-brightness discharge lamp by joining a plurality of ceramic compacts, and has: a compact-producing step (step S1) for producing a plurality of ceramic compacts including at least one ceramic compact having a groove on the joining surface; and a compact-joining step (step S2) for joining the joining surfaces of the plurality of ceramic compacts to each other. The method for producing a ceramic tube produces a ceramic tube having a hole formed by means of the groove.