For human perception in indoor environments, daylight is the gold standard for illumination. Windows open up the “box” of the space we are in – and the large, distant light source, with its relatively low brightness, creates a pleasantly diffuse kind of illuminance. By contrast, artificial lighting often has a different kind of directionality, and this affects how people feel.
A new understanding of the optical characteristics of natural light (and its effects on human health, well-being and productivity) is informing a new generation of indoor lighting designs. These designs take into account, for example, how horizontal and vertical light sources can give a room a very different luminous texture, with greatly altered shadows and highlights.
In New insights into spatial light distribution you will see how dynamically modifying the three-dimensional distribution of light in a space can improve the quality of most common lighting solutions. We will discuss three different approaches to this question, using daylight as the model from which to gain the relevant data.