Reflector unit comprising - a single pieced reflector, said reflector being obtained by way of a molding process, and - a frame structure for supporting the single pieced reflector, wherein the reflector comprises at least two reflecting chambers for reflecting light from a light source, wherein the at least two chambers are being spaced from another, and wherein the reflector is firmly and essentially non-adjustably connected to the frame structure by at least two connecting means, wherein the reflector is non-movable with regard to the frame structure along the portions of the connecting means, characterized in that the frame structure comprises at least one adjusting screw (5a, 5b) being connected with an engaging portion (7a, 7b) of the frame structure and an engaging portion (6a, 6b) of the reflector, wherein the engaging portions (6a, 6b, 7a, 7b) are configured to allow rotational movement of the respective adjusting screw (5a, 5b), and wherein rotational movement of the at least one adjusting screw (5a, 5b) translates into linear movement of the respective engaging portions (6a and 7a, 6b and 7b) with respect to one another for adjusting the distance between the respective engaging portions (6a, 6b) of the reflector and the respective engaging portion (7a, 7b) of the frame structure and thus bending the reflector with regard to the firm portions of the connecting means, wherein the reflector unit comprises at least two, in particular precisely two adjusting screws (5a, 5b), wherein the single pieced reflector and the frame structure comprise respective engaging portions (6a, 6b, 7a, 7b) for engaging with each adjusting screw (5a, 5b). - a single pieced reflector, said reflector being obtained by way of a molding process, and - a frame structure for supporting the single pieced reflector, wherein the reflector comprises at least two reflecting chambers for reflecting light from a light source, wherein the at least two chambers are being spaced from another, and wherein the reflector is firmly and essentially non-adjustably connected to the frame structure by at least two connecting means, wherein the reflector is non-movable with regard to the frame structure along the portions of the connecting means, characterized in that the frame structure comprises at least one adjusting screw (5a, 5b) being connected with an engaging portion (7a, 7b) of the frame structure and an engaging portion (6a, 6b) of the reflector, wherein the engaging portions (6a, 6b, 7a, 7b) are configured to allow rotational movement of the respective adjusting screw (5a, 5b), and wherein rotational movement of the at least one adjusting screw (5a, 5b) translates into linear movement of the respective engaging portions (6a and 7a, 6b and 7b) with respect to one another for adjusting the distance between the respective engaging portions (6a, 6b) of the reflector and the respective engaging portion (7a, 7b) of the frame structure and thus bending the reflector with regard to the firm portions of the connecting means, wherein the reflector unit comprises at least two, in particular precisely two adjusting screws (5a, 5b), wherein the single pieced reflector and the frame structure comprise respective engaging portions (6a, 6b, 7a, 7b) for engaging with each adjusting screw (5a, 5b).