| 摘要 |
PROBLEM TO BE SOLVED: To provide a point light source apparatus having a highly pressure- resistant discharge container for emitting high-intensity light as a point light source. SOLUTION: An electromagnetic energy excitation point-light source apparatus consists of a lamp, consisting of a discharge container consisting of a translucent nonconductive material and having a swelling portion and a tubule provided in communication therewith and a discharge concentrator supported by the tubule, without projecting into the exterior of the discharge container with the tip thereof positioned in a discharge space of the swelling portion for concentrating and intensifying electric field in the discharge space for discharge concentration, an electromagnetic energy supply means for exciting the discharge concentrator for discharge from outside the lamp, a concave reflector for reflecting light from the lamp, and resonance chamber composing container, having the lamp and the concave reflector housed and provided with an opening for confining electromagnetic energy without leaks, and extracting light out of the lamp and the concave reflector, which causes electromagnetic energy, resonance to the outside. |
