| 摘要 |
The capped high-pressure discharge lamp suitable for use in a vehicle headlight has a discharge vessel (1) which is surrounded by an outer envelope (10). Current conductors (23, 24) extend from a respective electrode (3, 4) to a respective contact (21, 22) at a cap (20) in which a first neck-shaped portion (6) of the discharge vessel is secured. A return portion (25) of one current conductor (24) extends along an outside surface of the outer envelope (10). The outer envelope (10) has a light-absorbing coating (11) in a region near the first neck-shaped portion (6), at a side which is remote from the return portion (25). The outer envelope may have band-shaped coatings at either side, aside from the discharge path between the electrodes (3, 4), at its side which faces the return portion (25). Stray light in the beam formed by the reflector and the lens of a headlight in which the lamp is used, is obviated. The bands provide for a rectilinear light/dark transition in said beam.
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