Measurement of Luminance Coefficients of the Road Pavement for Different Lamp Sources
ADVANCES IN ENERGY SCIENCE AND TECHNOLOGY, PTS 1-4(2013)
摘要
This paper presents the measurement results of the reduced luminance coefficients of an asphalt pavement sample under three common light sources: high pressure sodium lamp (HP S), metal halide lamp (MH), and light-emitting diode (LED), with a specially designed two-dimensional gonioreflectometer. The relative spectral reflectances are obtained with calculation for three different incident angles which indicate light sources with high output in the long wavelength region may be more effective. The measured average luminance coefficient for HPS and MH are 17% larger than that of LED. It means that LED road lamps need higher illuminance than BPS and MU to realize the same brightness for road lighting.
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关键词
road lighting,road pavement,luminance coefficient,measurement,LED
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