High-pressure discharge lamp and arc tube with long operating lifetime and high impact resistance

An arc tube, comprising:

• an arc vessel including a main tube part and a pair of capillary tube parts, the main tube part having an inner discharge space, the capillary tube parts continuing into the discharge space;
• a pair of electrodes being opposed to each other in the discharge space:
• a pair of feeders, each of which is inserted through a different one of the capillary tube parts with an end connected to one of the electrodes on a side of the feeder and a remaining end protruding from the capillary tube part to outside;
• and
• a seal member for sealing the feeders in the capillary tube parts,
• wherein at least one of the feeders includes a first conductive member being sealed in the capillary tube part and a second conductive member being connected to the first conductive member outside the capillary tube part, the first conductive member being resistant to halides, the second conductive member being located wholly outside of the capillary tube part and fixed with a fixing member at an end of the capillary tube part.

An illumination device comprising:

• an arc vessel including
• a main tube having an inner discharge space, and
• a first capillary tube and a second capillary tube, each capillary tube continuing into the discharge space;
• a first electrode and a second electrode being opposed to each other in the discharge space;
• a first conductive member extending through the first capillary tube and coupled to the first electrode at a first end;
• and
• a second conductive member coupled to a second end of the first conductive member and located wholly outside the capillary tube.

A method of manufacturing an illumination device comprising:

• forming an arc vessel including
• a main tube having an inner discharge space, and
• a first capillary tube and a second capillary tube, each capillary tube continuing into the discharge space;
• positioning a first electrode and a second electrode opposite to each other in the discharge space;
• positioning a first conductive member through the first capillary tube;
• coupling the first conductive member to the first electrode at a first end;
• and
• coupling a second conductive member to a second end of the first conductive member, the second conductive member being wholly outside the first capillary tube.