| 摘要 |
A bulb for a discharge lamp, includes an inner burner chamber, the outer contour of the bulb and the burner chamber each having a central region and adjacent edge regions, each central region being toroidal, and each edge region of the burner chamber adapted to be in the form of a truncated cone away from the central region and rotationally symmetrically with respect to the bulb axis, at a specific angle of taper. The midpoints of the circle segments, which form the central region of the outer contour and of the burner chamber, have a distance in the direction of the bulb axis; and/or the angles of taper of the two edge regions of the burner chamber are not the same; and/or the bulb axis lies between the circle segment, which forms the central region of the outer contour and/or of the burner chamber, and its midpoint.
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