| 摘要 |
PROBLEM TO BE SOLVED: To provide a light source capable of extending a service life by suppressing contamination of a window material. SOLUTION: A light source 1 comprises: a light-emitting cylinder part 3A for housing a light-emitting part 2 which generates light by discharging; a light guide cylinder part 3B whose one end side is connected to the light-emitting cylinder part 3A so that the light guide cylinder part 3B communicates with the light-emitting cylinder part 3A, and which guides the light generated by the light-emitting part 2 to an emission window part 4 arranged on the other end side of the light guide cylinder part 3B; and a reflection cylinder part 9 whose one end side is abutted on the light-emitting part 2 in the light-emitting cylinder part 3A and whose other end side is inserted in the light guide cylinder part 3B, and in which a reflection surface 9a for reflecting light is formed on an inner wall surface. An opening portion 9c penetrating toward the reflection surface 9a is formed on a side face on the one end side of the reflection cylinder part 9. COPYRIGHT: (C)2012,JPO&INPIT |
