Ushio Denki Kabushiki Kaisha

Katsuhiko Miyahra

Toyohiko Kumada

Yoshitaka Kanzaki

To form side tubes with adequate resistance to pressure, and to provide a short-arc, ultra-high-pressure discharge lamp having such side tubes, and to provide a method of manufacturing such a lamp, a short-arc, ultra-high-pressure discharge lamp () has a luminescent tube () within which a pair of electrodes () face each other, and side tubes () that extend from opposite sides of the luminescent tube and in which a portion of the electrodes is sealed and in which a small space (B) is formed to enable the electrodes () to expand and contract freely without compression along their axes due to a difference in the indices of expansion of the materials that make up the electrodes () and the side tubes ().

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Himeji, Japan

Katsuhiko Miyahra