Daylighting system, daylighting method, and building

摘要

A daylighting system (1) according to an aspect of the present invention includes a daylighting device (2) and an artificial light source device (3) that emits light toward the daylighting device (2). The daylighting device (2) is provided on the first surface of the base material (4) having a light transmission property and the base material (4), has a light transmission property, and reflects light incident from the light incident end surface on the reflection surface. A plurality of daylighting units (5) for reflection. The artificial light source device (3) emits at least light that enters the daylighting unit (5) from the light incident end surface and travels toward the reflecting surface.