NATURAL LIGHTING CONTROL DEVICE, NATURAL LIGHTING CONTROL SYSTEM, AND NATURAL LIGHTING CONTROL METHOD

To inhibit a person from feeling dazzled or hot.SOLUTION: A natural lighting control device 20 comprises: a control unit 26 for controlling a natural lighting device 30 capable of changing an optical state of a predetermined surface 91 through which light passes to a light cut-off state in which transmission of incident light is suppressed, for each region; an acquisition unit 22 for acquiring positional information on a person detected by a sensor 10; and a determination unit 24 that on the basis of the positional information, determines a region whose optical state is to be changed on the predetermined surface 91. The control unit 26 changes an optical characteristic of the natural lighting device 30 to change an optical state of the region determined by the determination unit 24.SELECTED DRAWING: Figure 1 【課題】人が感じる眩しさ又は暑さを抑制する。【解決手段】採光制御装置２０は、光が透過する所定面９１の光学状態を、入射する光の透過を抑制する遮光状態に領域毎に変化させうる採光デバイス３０を制御する制御部２６と、センサ１０によって検知された人の位置情報を取得する取得部２２と、所定面９１において、光学状態を変化させる領域を位置情報に基づいて決定する決定部２４とを備え、制御部２６は、採光デバイス３０の光学特性を変更することで、決定部２４によって決定された領域の光学状態を変化させる。【選択図】図１