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The influence of road reflective characteristic to the uniformity of illuminance and uniformity of luminance are discussed for roadway lighting on cement concrete road and asphalt road. The luminous intensity function designed with illuminance uniformity purpose can fulfill the lighting requirements for cement concrete road. But in asphalt road case, it leads to enormous fluctuate of luminance. Luminous...
A LED street lamps design with nonsymmetrical light distribution along the road was proposed in this paper. With rectangular light distribution pattern, it reduces the intervals of the largest intensity to decrease the direct glare for drivers. Comparing with the symmetry design along the road, its threshold increment reduced 50% in the same condition.
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