High-frequency excitation point light source lamp device

摘要

To provide a lamp device that is a point light source, that withstands high pressure, and that produces high-intensity light, a high-frequency excitation point light source lamp (1) device has been devised having a discharge vessel (2) made of a transparent, non-conductive material and having an expanded part (2A) forming a discharge space (11) and with tubules (2B) joined to the expanded part (2A); at least one discharge concentrator (3), that concentrates the electrical field within the discharge space (11) of the expanded part (2A), which is supported in a tubule (2B) with an end (32) within the discharge space; and a high-frequency supply (5) external to the lamp (1) for providing excitation energy that excites a discharge of the concentrator (3).