| 摘要 |
The invention relates to a compensating light guide (10) for guiding visible light (20) from a light source (100). The light guide has a first transmission region (1TR), where light is guided from the light source along a first optical path (1OP), and a second transmission region (2TR), where light is guided from the light source along a second optical path (2OP). The light guided along the second optical path has a larger absorption in a first sub band resulting in an absorption difference between the first and the second optical path. The first (1TR) and second (2TR) transmission regions are optically arranged to transmit light so as to relatively reduce a second sub band of the first spectral distribution. The relative reduction between the first (1TR) and second (2TR) transmission regions is proportionated so as to psycho-visually compensate the absorption difference in the light guide (10) resulting in a uniform color emitted from the light guide (10) as perceived by a viewer (200).
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