タスク・アンビエント照明における作業面上の照度特性と影の特性について

タスク光源の位置を変化させた場合

抄録

Task Ambient Lighting, the characteristics of illuminance and shadow on the working plane become complex, because Task Light is often set up in various locations. Therefore, data concerning these characteristics is needed, when the lighting design that considers the shadow is done. In this paper, the characteristics of illuminance and shadow on the working plane were evaluated under changing Task Ambient Lighting conditions, created by changing the position of the Task Light. As a result, at a position for the Task Light where the value of the uniformity ratio of illuminance becomes the maximum, it is clear that minimum illuminance and average illuminance have a higher value, and the maximum shadow factor and rate of shadow area have a lower value.