High-pressure discharge lamp with improved ignitability and high-voltage pulse generator

Abstract

High pressure discharge lamp ( 20 ) with improved ignitability. A spiral pulse generator ( 1 ) that is directly mounted inside the outer piston ( 12 ) of the lamp is used for igniting the high pressure discharge lamp.

1 . A high-pressure discharge lamp with a discharge vessel, which is accommodated in an outer bulb and is held there by a frame, an ignition apparatus being integrated in the lamp which generates high-voltage pulses in the lamp, characterized in that the ignition apparatus is accommodated in the outer bulb. 
     
     
         2 . The high-pressure discharge lamp as claimed in  claim 1 , characterized in that the ignition apparatus is part of the frame. 
     
     
         3 . The high-pressure discharge lamp as claimed in  claim 1 , characterized in that the ignition apparatus is a spiral pulse generator. 
     
     
         4 . The high-pressure discharge lamp as claimed in  claim 3 , characterized in that the spiral pulse generator is produced from a temperature-resistant material, in particular from LTCC material. 
     
     
         5 . The high-pressure discharge lamp as claimed in  claim 1 , characterized in that the high voltage produced by the spiral pulse generator acts directly on two electrodes in the discharge vessel. 
     
     
         6 . The high-pressure discharge lamp as claimed in  claim 1 , characterized in that the voltage produced by the spiral pulse generator acts on an auxiliary ignition electrode fitted on the outside on the discharge vessel. 
     
     
         7 . The high-pressure discharge lamp as claimed in  claim 1 , characterized in that the spiral pulse generator is constructed from a plurality of layers, the number n of layers being at least n=5. 
     
     
         8 . The high-pressure discharge lamp as claimed in  claim 7 , characterized in that the number n of layers is at most n=500, preferably at most n=100. 
     
     
         9 . The high-pressure discharge lamp as claimed in  claim 1 , characterized in that the spiral pulse generator has an approximately hollow-cylindrical design, with an inner diameter of at least 10 mm. 
     
     
         10 . The high-pressure discharge lamp as claimed in  claim 1 , characterized in that the dielectric constant ε r  of the spiral pulse generator is at least ε r =10. 
     
     
         11 . The high-pressure discharge lamp as claimed in  claim 1 , characterized in that in addition a series resistor is accommodated in the outer bulb and limits the charging current of the spiral pulse generator. 
     
     
         12 . A high-pressure discharge lamp with a discharge vessel and with an associated ignition apparatus, the ignition apparatus generating high-voltage pulses and containing a spiral pulse generator, characterized in that the spiral pulse generator is manufactured from an LTCC material. 
     
     
         13 . The high-pressure discharge lamp as claimed in  claim 12 , characterized in that the spiral pulse generator is accommodated in an outer bulb of the lamp.