Luminaire with a louver for controlling the light radiation

A luminaires comprising a light source (6,7) for producing light radiation leaving the luminaire through its front side, whereby the luminaire comprises a concave reflector (1) around a central axis (2) perpendicular to said front side, whereby the dimensions of the cross section of the reflector (1) perpendicular to said central axis (2) decreases further away from the front side of the luminaire, whereby the luminaire comprises a tubular louver (11) being positioned around said central axis (2) in front of the light source (6,7) and being located at least partly inside said concave reflector (1), whereby the louver (11) has a substantial tubular wall with an inner side (12) and an outer side (13), both sides (12,13) having a light reflecting surface, whereby said louver (11) is connected with the remainder of the luminaire through connection means (17), characterized in that said connection means (17) are substantially located in the area of the luminaire behind the louver (11), and in that said connection means (17) engage the louver (11) near its back edge (15), which is directed to the light source (6,7).