UNIVERSAL TRAFFIC LIGHT LUMINAIRE

摘要

A traffic light luminaire includes at least one light source, a collimating device for collimating light emitted by the at least one light source, and a light distribution device for spreading the collimated light within a specific solid angle with a specific luminous intensity distribution. The light source is a high brightness light source, and the light distribution device is a microstructured distributor having a micro-structured surface, wherein each equal-sized macroscopic section of the microstructured distributor contributes to the luminous intensity distribution in the same way within said whole specified solid angle. Thereby a low maintenance traffic light luminaire is provided which generates a homogeneous light distribution for a variety of trail arrangements (right curve, left curve, straight line) independent of the distance of the viewer.

主权项

1. A traffic light luminaire, comprising:
at least two light sources: an elongated light homogenizing device configured to spatially superimpose light emitted by the at least two light sources into a combined beam of superimposed light; wherein the light homogenizing device comprises an optical waveguide including an input area feeding the light emitted by the at least two light sources into the optical waveguide and an output area emitting the beam of superimposed light; a collimating device configured to collimate the beam of superimposed light emitting from the output area of the optical waveguide; and a light distribution device for spreading the collimated light within a specific solid angle with a specific luminous intensity distribution; wherein at least one of the at least two light sources is a high brightness light source; wherein the light distribution device is a microstructured distributor having a microstructured surface, wherein each equal-sized macroscopic section of the microstructured distributor contributes to the luminous intensity distribution in the same way within said whole specified solid angle.