ELECTRODE-LESS DISCHARGE LAMP

摘要

PROBLEM TO BE SOLVED: To provide an electrode-less discharge lamp which is capable of suppressing changes in its light emission efficiency in upward or downward direction. SOLUTION: In this electrode-less discharge lamp, a convention suppression means 9 is mounted at an equal distance from the winding axis of a induction coil 2 on the inside wall of a lamp container 1 in order to suppress the plasma convection in the container 1.