The Study of Retroreflective Material Based on Mesopic Vision Theory

Abstract

The coefficient of retroreflection is considered as the most important parameter of retroreflective material, the value of which is tested by photopic detector now. In fact this material were usually used under mesopic vision condition, and through the test of retroreflective spectra, the mesopic spectral luminous efficiency Vmes(λ) and equivalent brightness were calculated. The result show that at different brightness the retroreflective light present unlike spectrum distribution, and white, blue material with higher retroreflection value under mesopic vision, red material own lower value, this phenomenon is more apparent with the decrease of brightness.