Linear ceiling and wall luminaire for aesthetically sophisticated lighting. Housing is made of extruded aluminium profile and powder-coated. End cap is aluminium and powder-coated. The Alea optical system features a reflector structure made of ABS, aluminium-coated, and highly polished, with an integrated diffuser made of non-yellowing plastic (PMMA) opal for glare-free light at the workstation, compliant with EN 12464-1. Suitable for ceiling mounting. The LED unit has an integrated converter that is interchangeable and removable. It is suitable for through-wiring and can be equipped with sensors or function as a safety luminaire upon request.