Research on Lighting Effect of Light Sources with Different Colors for Lighting of Highway Tunnels

Under the conditions of photopic vision and mesopic vision,this paper tests response time of 10 testees with normal vision by selecting 5 background light intensities to study lighting effects of 4 light sources including high-pressure sodium lamp(HPS),metal halide lamp(MH),compact fluorescent lamp(CFL) and light emitting diode(LED) and conversion relationship between them.At the same time the paper calculates brightness contrast coefficient,relative lighting effect and reduced luminous efficiency of other 3 light sources with high-pressure sodium lamp as a reference and based on test results of response time,and finally determines suitability and energy conservation of different light sources in tunnel lighting environment in a comprehensive way.