Linear ceiling and wall-mounted luminaire for aesthetically sophisticated lighting. Housing made of powder-coated extruded aluminum profile. End caps made of powder-coated aluminum, with no visible screws. Diffuser made of non-yellowing plastic (PMMA), microprismatic. Specially coordinated 2-component optical system for glare-free light at the workplace (suitable for screens in accordance with DIN EN 12464-1). Suitable for ceiling mounting. Replaceable and removable LED unit with integrated control gear. Suitable for through-wiring.