ILLUMINATION SYSTEM, LUMINAIRE AND BACKLIGHTING UNIT

摘要

The invention relates to an illumination system (2), aluminaire (2), a backlighting system and a display device. The illumination system according to the invention comprises a light exit window (30) for emitting light from the illumination system, and a diffuse reflecting screen (40) arranged opposite the light exit window. The illumination systemfurther comprises a light source (20) which is arranged for indirect illumination of the light exit window via the diffuse reflecting screen. The light source is arranged near an edge ofthe light exit window on an imaginary plane (22) arranged substantially parallel to the light exit window and emits light away from the light exit window. The illumination system further comprises an edge wall (62) comprising a specular reflecting mirror (60) being concavelyshaped for reflecting at least part of the light emitted by the light source towards the diffuse reflecting screen. The effect of the illumination system according to the invention is that the use ofthe specular reflecting mirror enables a controlled reflection of the part of the light emitted by the light source towards the diffuse reflecting screen.