HIGH PRESSURE DISCHARGE LAMP WITH SMALL ELECTRIC POWER CONSUMPTION

摘要

For the rapid start-up of a vehicle metal halogenide high-pressure discharge lamp (1), said lamp has the smallest possible amount of quartz glass and electrodes which are suitable for a 5- to 10-fold start-up current timer-controlled by an electronic control gear. The control device for the electronic control gear ensures that the limit rating of the lamp is not exceeded. Furthermore, the lamp has an infrared and/or ultraviolet reflecting (9) or absorbing (8) coating on its surface. As an additional measure, the quartz glass of the discharge vessel can be provided with an infrared and/or ultraviolet reflecting or absorbing doping. With a xenon filling of the discharge vessel 2 of at least 3 bar, 90% of the light beam of the lamp is obtained already at approximately 1 sec. <IMAGE>