DISCHARGE TUBES

摘要

Discharge tubes for a lamp include a body portion (61) with a first end (61a) , a second end (61b) , and a tubular member (62) defining an interior area" (74) . The tubular member extends along an elongated axis (58) between the first end and the second end. The discharge tube further includes a first end portion (64a) provided at the first end of the body portion. The first end portion includes a first tubular extension (66) having a first through passage in communication with the interior area. The first end portion further includes a first transition section (68) connected between the first tubular extension and the body portion. The first end portion (64a) is configured for minimising a temperature differential within the transition section (68) .