| 摘要 |
PROBLEM TO BE SOLVED: To reduce the effect on a visible-light LED of the ultraviolet ray irradiated by an ultraviolet LED.SOLUTION: Provided is a linear light source comprising an ultraviolet light emitting diode 1a, a visible light emitting diode 3a, and a transparent material 5, wherein the ultraviolet light emitting diode 1a and the visible light emitting diode 3a are disposed at least at one optical axis end of the transparent material 5, and are disposed by shifting the optical axis and providing a step in the direction of the optical axis. Here, the ultraviolet light emitting diode 1a and the visible light emitting diode 3a are mounted on a heat sink 6a shaped like an inverted letter L, and an ultraviolet light cutoff filter 2 is disposed in front of the visible light emitting diode 3a. |
