CIE 1976 L^*a^*b^*均匀色空间内变换光源对蓝绿色磷灰石颜色的影响研究  

Research on the Influence of Changing Illuminants on the Color of Blue-Green Apatite Based on CIE 1976 L^*a^*b^* Uniform Color Space

作　　者：颜麒丞 YAN Qicheng(School of Gemmology,China University of Geosciences(Beijing),Beijing 100083)

机构地区：[1]中国地质大学(北京)珠宝学院,北京100083

出　　处：《中国宝玉石》2020年第3期50-54,共5页China Gems & Jades

摘　　要：为探究变换光源对蓝绿色磷灰石颜色的影响,在CIE 1976 L~*a~*b~*均匀色空间内,以D65、A、CWF三种标准照明光源作为实验光源,定量测试蓝绿色磷灰石的明度值L~*、彩度值C~*、色调角h°,将数据导入SPSS软件分析样品蓝绿颜色的变化特征。对比三种光源的光谱功率分布特点,得出结论:D65光源具有高色温和光谱功率分布均匀连续的特点,有利于提升蓝绿色磷灰石的明度值L~*和彩度值C~*,且在480~510nm蓝绿波段区间具有较高能量,与磷灰石蓝绿体色叠加,适合作为蓝绿色磷灰石的最佳照明光源。In order to explore the effect of changing light sources on the color of blue-green apatites, based on the CIE 1976 L*a*b* uniform color space, three standard lighting sources of D65, A and CWF are used as experimental light sources to quantitatively measured the lightness L*, chroma C* and hue angle h° of blue-green apatites. SPSS analysis is used to quantify the color change characteristics of the samples. Comparing the spectral power distribution characteristics of the three light sources, it is concluded that D65 light source, which has the characteristics of high color temperature and uniform and continuous spectral power distribution, is conducive to improving the L*and C* of the blue-green apatite. In the blue-green band of 480~510 nm, D65 light source which has an energy peak and can be superimposed with the blue-green apatite body color, is suitable as the best lighting source for the blue-green apatite.

关 键 词：磷灰石 色度学 标准光源 

分 类 号：P575.9[天文地球—矿物学]