Lighting unit has rectangular box format with reflective top and side walls, with lighting tubes installed in end compartments, together with clear prism plates

摘要

The lighting unit is in the form of a rectangular box with a reflective top (3) and side walls. Lighting tubes (11) are installed in the end compartments and the output passes through clear prism plates (30). The lighting output from the unit is via a prism plate (7) which has a corrugated surface.