| 摘要 |
PROBLEM TO BE SOLVED: To provide a luminaire capable of reducing speckle noise in a simple composition.SOLUTION: A luminaire has: a light source device; a diffraction element provided with a plurality of cells including a first cell forming a first diffraction pattern and a second cell forming a second diffraction pattern which is different from the first diffraction pattern; and an oscillation device for oscillating the diffraction element so that a diffraction pattern formed by a first flux emitted from the light source device and the diffraction element are varied by time. |
