| 摘要 |
PROBLEM TO BE SOLVED: To provide a light source device that can efficiently converge light emission of luminescent elements into a specific focus.SOLUTION: The LED light source device 1 includes: a reflector 22 having a cylindrical face 21; a plurality of LEDs 5 arrayed in a bottom 21C of the cylindrical face 21 along in an extending direction of the cylindrical face 21 so that the light emission of the respective LEDs 5 is reflected and irradiated on the cylindrical face 21 of the reflector 22. Moreover, the LED light source device includes a rod lens 25 shaped for the cylindrical face 21 to have a focus point Y in an irradiation direction, extended to cover the respective LEDs 5, and converging direct emission component 5B of the LEDs 5 into the focus point Y of the cylindrical face 21. |
