| 摘要 |
PROBLEM TO BE SOLVED: To provide an illumination apparatus capable of reducing illuminance irregularity on an irradiated surface by a simple configuration.SOLUTION: In an illumination apparatus 1 including a light source 22 for illuminating an irradiated surface 10A, a light diffusion unit 101 for diffusing light to uniform illuminance distribution on the irradiated surface 10A is arranged between the light source 22 and the irradiated surface 10A, the light diffusion unit 101 is configured by separately arranging light diffusion members 110, 120 of two layers between the irradiated surface 10A and the light source 22, and auxiliary reflection surfaces 150A, 150B for reflecting light directed to a position deviated from the irradiated surface 10A out of light radiated from the light source 22 to the irradiated surface 10A are arranged between the separately arranged light diffusion members 110, 120 of two layers. |
