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首页> 外文期刊>Applied optics >Separation of surface and bulk reflectance by absorption of bulk scattered light
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Separation of surface and bulk reflectance by absorption of bulk scattered light

机译：通过吸收大量散射光来分离表面和整体反射率

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摘要

A method is proposed for separating light reflected from turbid media with a rough surface into a bulk and a surface component. Dye is added to the sample, thereby increasing absorption and canceling bulk scattering. The remaining reflected light is surface reflectance, which can be subtracted from the total reflectance of an undyed sample to obtain the bulk component. The method is applied to paper where the addition of dye is accomplished by inkjet printing. The results show that the bulk scattered light is efficiently canceled, and that both the spectrally neutral surface reflectance and the surface topography of the undyed paper is maintained. The proposed method is particularly suitable for characterization of dielectric, highly randomized materials with significant bulk reflectance and rough surfaces, which are difficult to analyze with existing methods. A reliable separation method opens up for new ways of analyzing, e.g., biological tissues and optical coatings, and is also a valuable tool in the development of more comprehensive reflectance models.
机译：提出了一种方法，用于将从具有粗糙表面的混浊介质反射的光分离为块体和表面成分。将染料添加到样品中，从而增加吸收并消除体积散射。剩余的反射光是表面反射率，可以从未染色样品的总反射率中减去表面反射率以获得块状成分。该方法适用于通过喷墨印刷完成染料添加的纸张。结果表明，大量的散射光被有效地抵消了，并且光谱中性的表面反射率和未染色纸的表面形貌都得到了保持。所提出的方法特别适合于表征具有显着的整体反射率和粗糙表面的介电，高度随机化的材料，这些材料很难用现有方法进行分析。可靠的分离方法为生物组织和光学涂层等新的分析方法开辟了道路，也是开发更全面的反射率模型的宝贵工具。

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