The large hall has been furnished with a combined daylight/ artificial light ceiling, barrel-s haped in line with the original design of the room. The peripheral zones are lined with plasterboard. The diffuser material is Luxell foil, applied in 1.95 m wide sheets with no welded seams.
Above the ceiling, on the west- and east-facing facade sides of the room, are rows of nine historical window openings.
To harness daylight, deflectors shaped only in one plane are mounted on the concrete ceiling along the entire length of the room. With light-guiding blinds in the window niches, the deflector baffles track daylight for optical light injection. The light bouncing off the deflectors is directed onto the surface of the foil, where it generates an appropriate brightness. A special luminaire system with colour temperature control and specular reflectors casts artificial light onto the same deflectors, which direct the secondary light similarly onto the foil.