| 摘要 |
PROBLEM TO BE SOLVED: To provide an LED array panel where a plurality of LED elements are arranged, and illumination light having a uniform intensity distribution of light on an irradiation surface can be outputted. SOLUTION: Each LED element 3 for composing an LED array panel 1 is arranged around an optical axis 72 at angles having a difference of 90 degrees, a light having an intensity distribution with a fixed pattern being outputted from each LED element 3 is overlapped for averaging, and the intensity distribution of illumination light outputted from the LED array panel 1 becomes nearly uniform over the irradiation surface. By using the lighting device which uses the array panel 1, a compact projector that can display images which have small amount of irregularity or the like can be provided. |
