Patent ID: 8118453

Claim:
A luminaire provided with: a light emission window of a width W for emitting light out of the luminaire; elongate side reflectors, placed opposite each other, equidistant from a plane P that is perpendicular to the light emission window, wherein the side reflectors have an edge defining the width W of the light emission window and are concavely curved transverse to the edge, inclining towards one another in a direction away from the light emission window; a holder configured to accommodate an elongate electric lamp between the side reflectors, along the light emission window and in the plane P; and a plurality of substantially parallel, substantially equidistant lamellae transverse to the plane P and to the light emission window, wherein the lamellae have a V-shaped cross-section, an outer edge which is remote from said holder, and an inner face remote from the light emission window, the outer edge having a central portion through the plane P and straight end portions adjacent the side reflectors, wherein the central portion is between two ends and the straight end portions extend from the two ends, respectively, to the side reflectors; wherein the lamellae have a length W equal to the width W and are present in the light emission window, wherein the central portion of the outer edge directly merges into the straight end portions, and wherein the straight end portions of the outer edge are tilted down and away from the holder relative to a line connecting the two ends of the central portion so that each of the straight end portions forms an angle greater than 180° with the line connecting the two ends of the central portion.