| 摘要 |
The invention relates to a collimation arrangement (1, 2, 3, 4) for collimating light emitted by at least one light emitting diode (12, 14) arranged on a planar base (16). The collimation arrangement (1, 2, 3, 4) comprising a collimator (20, 22, 24) and a set of reflective surfaces (50, 52). The collimator comprises a light-ingress window (28, 30) for admitting light emitted by the at least one light emitting diode into the collimator (20, 22, 24), a light-egress window (32, 34) for emitting the light from the collimator (20, 22, 24), and comprises a first edge surface (36), a second edge surface (38), a third edge surface (40, 42, 44) and a fourth edge surface (46, 48). The collimation arrangement (1, 2, 3, 4) is arranged for guiding light emitted by the at least one light emitting diode (12, 14) in a direction of the third and fourth edge surfaces (40, 42, 44, 46, 48) towards the light-egress window (32) via total internal reflection and is arranged for guiding light emitted by the at least one light emitting diode (12, 14) in the direction of the first and second edge surfaces (36, 38) via the reflective surfaces (50, 52). This results in a collimation arrangement of which the width (w) can be easily reduced. |
