To provide a luminaire which allows a user to easily recognize three modes of breathing.SOLUTION: A luminaire comprises: a plurality of light sources which include at least a first light source for emitting a first light and a second light source for emitting a second light having a chromaticity different from that of the first light； and a control unit for temporally varying outputs of the first and second lights. The control unit is configured to change temporally vary stimulation purity and brightness of an aggregated light obtained by aggregation of lights emitted by the plurality of light sources. In a coordinate system in which the stimulation purity and brightness are variables, movement points representing the stimulation purity and the brightness of the aggregated light move on a path connecting a first point, a second point, a third point and a first point that are different from each other in an order of the first point, the second point, the third point, and the first point.SELECTED DRAWING: Figure 1【課題】ユーザが呼吸の３様態を認識しやすくする照明装置を提供する。【解決手段】照明装置は、第１光を発する第１光源、及び第１光と異なる色度を有する第２光を発する第２光源を少なくとも含む複数の光源と、第１光、及び第２光の各々の出力を時間的に変化させる制御部と、を備え、制御部は、複数の光源が発する光を合算した合算光の刺激純度、及び輝度を時間的に変化させるよう構成され、刺激純度、及び輝度を変数とする座標系において、合算光の刺激純度、及び輝度を表す移動点は、互いに異なる第１点、第２点、第３点、及び第１点を結ぶパス上を、第１点、第２点、第３点、及び第１点の順に移動する。【選択図】図１
