| abstract |
In order to eliminate undesired light intensity maxima on or near the axis of symmetry in the radiation direction facing away from the base (24), the bulb top (25) including the unavoidable pump tube extraction point (26), for example, is attached to incandescent or discharge lamps (21). matted by sandblasting.n n n Due to the matting, the piston crown (25) and the pump tube extraction point (26) only have non-directional, but no directional, transparency and thus lose their light collecting effect, which is responsible for the disturbing light intensity maxima. |