The aim of this project is to develop a passive daylight dome with optimum light capture: a daylight dome that does not use any moving parts, but which uses static optical structures to deflect daylight into the interior space at low solar levels. Together with researchers from UGent, optical patterns are being sought that can enhance the light of day through the laws of optics and bring them conditioned in buildings. The research is limited to flat structures or, in addition, flat sheets that are bent over a framework. These optical structures are built into light domes or light streets. The thermal resistance of the entire project is a crucial parameter, but by providing additional thermal interruptions the light transmission decreases. A good balance has to be found between a high light transmission and low heat transmission.