A fixture for providing omnidirectional continuous lighting comprises a light source (10). an optical system (20) adapted to concentrate, direct and shape an incident into an output slit beam, a motor (30) coupled to a revolvable part (25) of the optical system (20), thereby enabling rotation of the output slit beam, around a rotational axis (y), with such an angular velocity (φ) and in such a manner that the provided lighting appears continuous to a spectator.