Atrium III Design: Hallvard Jacobsen Light is important in any environment, both by day and by night. The colour, shape and lines of the fitting, as well as the light it produces, affect our senses and enhance our experience of the environment Atrium III provides light and design of the highest quality, and suits all types of environment. Thanks to a wide assortment of light sources and efficient reflectors, it is easy to adapt the function of the fitting to all sorts of applications.