Super-high pressure discharge lamp of the short arc type
AssigneeUshiodenki Kabushiki Kaisha
InventorsYoshitaka Kanzaki, Toyohiko Kumada, Masanobu Komiya, Koji Miyauti
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Abstract
A super-high pressure discharge lamp of the short arc type which has an arc tube portion in which there is a pair of opposed electrodes and which is filled with at least 0.15 mg/mm3 mercury, and side tube portions which extend from opposite sides of the arc tube portion and in which there are metal foils. The electrodes are each electrically connected to a respective one of the metal foils by a metallic component with cross-sectional area that is smaller than the cross sectional area of the electrodes in the area in which the electrodes are located in the side tube portions.
Claims19
Super-high pressure discharge lamp of the short arc type which comprises:
- an arc tube portion which is filled with at least 0.15 mg/mm3 mercury;
- a pair of opposed electrodes disposed in the arc tube portion;
- side tube portions which extend from opposite sides of the arc tube portion;
- and
- a metal foil located in each of said side tube portions,
- wherein each of the electrodes is electrically connected to a respective metal foils by at least one metallic component, the at least one metallic component having a cross-sectional area which is smaller than that of the electrodes in an area in which the electrodes are located in the side tube portions.
Super-high pressure discharge lamp of the short arc type which comprises:
- an arc tube portion which is filled with at least 0.15 mg/mm3 mercury;
- a pair of opposed electrodes disposed in the arc tube portion;
- side tube portions which extend from opposite sides of the arc tube portion;
- and
- a metal foil located in each of said side tube portions,
- wherein each of the electrodes has a part with a larger diameter which is at least partially located in a respective one of the side tube portions, and a part with a smaller diameter which is welded to a respective one of the metal foils, and wherein a small intermediate space is provided between the part of the electrode with the larger diameter and the side tube portion.
Dependencies are inferred from the claim text.