光源光譜對標(biāo)志逆反射系數(shù)的影響
[Abstract]:Based on the spectral reflectance curves of light source and backreflection material, the relative relation and variation trend of material inverse reflectance under various light sources were studied by data fitting. Based on the standard A light source test system, the spectral reflectance curves of xenon lamp, halogen lamp, white LED light source with different color temperature, red, yellow, white, green and blue were measured respectively. The correction factor of the relative inverse reflection coefficient of the same material under different irradiation conditions was obtained by fitting calculation. The results show that the inverse reflectance of white materials with continuous spectral reflectivity distribution in the visible range is slightly affected by the spectral variation of the incident light source, while the inverse reflection coefficient of the monochromatic material is greatly affected by the spectral difference of the incident light source. Based on the measured results of material inverse reflection coefficient under the incident condition of halogen source, the white LED, xenon lamp with different color temperature has a positive gain effect on the inverse reflection coefficient of red and yellow materials. With the increase of the color temperature of the light source, the inverse reflection coefficient of the red and yellow materials showed a downward trend, with the highest decrease of 47.7% and 4.9%, respectively. The inverse reflectance of green and blue materials showed an upward trend, with the highest increase of 16.5% and 28.9%.
【作者單位】: 交通運輸部公路科學(xué)研究院;公路交通安全技術(shù)交通行業(yè)重點實驗室;河北大學(xué)物理科學(xué)與技術(shù)學(xué)院;
【基金】:國家自然科學(xué)基金項目(61104161,61205180)資助
【分類號】:U491.52
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