There is nothing more rational than taking advantage of natural lighting as a guarantee to improve the spatial quality of buildings, as well as saving energy. The awareness of the finitude of natural resources and the demands for reducing energy consumption has increasingly diminished the prominence of artificial lighting systems, forcing architects to seek more efficient design solutions. With this goal in mind, different operations have been adopted to capture natural light.

These systems can also guarantee excellent spatial properties if projected correctly. Below we have gathered five essential systems for zenithal lighting.