光源光譜對標志逆反射系數的影響
發(fā)布時間:2018-12-21 11:14
【摘要】:以光源發(fā)射光譜和逆反射材料光譜反射率曲線為基礎,通過數據擬合的方式研究了多種光源照射條件下材料逆反射系數的相對關系及其變化趨勢。在已有標準A光源測試系統(tǒng)基礎上,分別測試氙燈、鹵素燈、不同色溫白光LED光源發(fā)射光譜和紅、黃、白、綠、藍五種逆反射材料的光譜反射率曲線,并通過擬合計算得到同一材料在不同光源照射條件下的相對逆反射系數修正因子。分析結果表明,在可見光范圍內具有連續(xù)光譜反射率曲線分布的白色材料逆反射系數數值受入射光源光譜變化較小,而單色材料逆反射系數受入射光源光譜差異影響較大,且呈現不同的變化趨勢:以鹵素光源入射條件下材料逆反射系數測試結果為基礎值,不同色溫的白光LED、氙燈光源對紅色和黃色材料逆反射系數具有正增益效果,且隨著光源色溫的升高,紅色和黃色材料逆反射系數呈下降趨勢,降幅最高分別達到47.7%和4.9%;綠色和藍色材料逆反射系數呈上升趨勢,漲幅最高達到16.5%和28.9%。
[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研究院;公路交通安全技術交通行業(yè)重點實驗室;河北大學物理科學與技術學院;
【基金】:國家自然科學基金項目(61104161,61205180)資助
【分類號】:U491.52
本文編號:2388835
[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研究院;公路交通安全技術交通行業(yè)重點實驗室;河北大學物理科學與技術學院;
【基金】:國家自然科學基金項目(61104161,61205180)資助
【分類號】:U491.52
【共引文獻】
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1 呂文婷;大功率LED照明燈及汽車前大燈散熱結構研究[D];吉林大學;2012年
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