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现行测色法多以常规光谱为基础。通过测量样品对光的透射或反射率以及光源的能量分布,叠合色匹配函数,来寻找颜色的三刺激量,由此获取样品的色别、色饱和度和明度的信息。这些方法的共同特点是定向输入光子,并计量定向输出光子的情况。为了能将测定范围扩展到那些高反射、散射、漫射、辐射和层状样品,对一般常规光谱法是困难的。我们因此提出了光声测色法(PAC)。
The current colorimetric method is based on conventional spectroscopy. By measuring the sample’s light transmission or reflectivity and the energy distribution of the light source, the overlap color matching function is used to find the amount of tristimulus for the color, thereby obtaining information on the color, saturation and lightness of the sample. The common feature of these methods is the directional input of photons and the measurement of the directional output of photons. In order to be able to extend the range of measurements to those samples that are highly reflective, diffuse, diffuse, radiative and layered, it is difficult for conventional spectroscopy to be routine. We therefore proposed photoacoustic colorimetry (PAC).