| 摘要 |
PROBLEM TO BE SOLVED: To align more LEDs in an LED array, and to efficiently utilize light emitted by each LED.SOLUTION: A light source unit 13 comprises: an LED array 24 where a plurality of LEDs 31 are aligned; and a lens array 25. The lens array 25 is disposed between a light guide 22 and the LED array 24, and includes two types of lens parts 34 and 35 for condensing light of each LED 31 to an incident end face 22a of the light guide 22. The second lens part 35 is disposed adjacent to at least one or more of the first lens parts 34, and it has radius of curvature smaller than that of the first lens part 34. |
