LIGHT-GUIDE FOR AN ILLUMINATION SYSTEM AND FOR A SCANNING BACKLIGHT SYSTEM

摘要

The invention relates to a light-guide (100), an illumination system (200), a luminaire (400), a scanning backlight system (200) and a display device. The light-guide comprises a plurality of light-guide segments (10), each light-guide segment being substantially optically separated from a neighboring light-guide segment. Each light-guide segment comprises light-extraction means (40) for extracting at least part of the distributed light via a front wall (20) to illuminate in operation a light output window (220). A distance (D) between the front wall and the light output window being smaller at a center (C) of the front wall compared to a predefined edge (50) of the front wall. The predefined edge of the front wall is an edge at which the light-guide segment is arranged adjacent to the neighboring light-guide segment. An effect of the light-guide according to the invention is that the increased distance at the predefined edge of the front wall between the front wall and the light output window reduces local variations in intensity and/or color and/or distribution of the light due to mixing of the light before the light impinges on the light-output window.