PROBLEM TO BE SOLVED: To uniformly illuminate an illumination area by using a plurality of light sources.SOLUTION: An illumination device comprises: a first light source and a second light source that illuminate an illumination area with light a first substrate on which the first light source and second light source are mounted and a second substrate that is arranged in a direction in which light is radiated from the first and second light sources with respect to the first substrate, and has a first diffraction optical element provided corresponding to the first light source and a second diffraction optical element provided corresponding to the second light source that are integrally formed.SELECTED DRAWING: Figure 11COPYRIGHT: (C)2018,JPO&INPIT【課題】複数の光源を用いて照明領域を均一に照明すること。【解決手段】照明装置は、照明領域に光を照射する第1光源及び第2光源と、前記第1光源及び前記第2光源が搭載された第1の基板と、前記第1の基板に対して前記第1及び第2光源の光の照射方向に配置され、前記第1光源に対応して設けられる第1回折光学素子及び前記第2光源に対応して設けられる第2回折光学素子とが一体成形された第2の基板とを含む。【選択図】図11
