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Design of an instrument for measuring the spectral bidirectional scatter distribution function

机译：测量频谱双向散射分布函数的仪器的设计

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摘要

The spectral bidirectional scatter distribution function (BSDF) offers a complete description of the spectral and spatial optical characteristics of a material. Any gloss and color measurement can be related to a particular value of the BSDF, while accurate luminaire design with ray tracing software requires the BSDF of reflectors and filters. Many measuring instruments, each having particular advantages and limitations, have been reported in the literature, and an overview of these instruments is included. A measuring instrument that allows for an absolute determination of the spectral BSDF with a full three dimensional spatial coverage in both reflectance and transmittance mode, a broadband spectral coverage, a large dynamic range, a reasonable acquisition time, and a large sample illumination area is presented. The main instrument characteristics are discussed, and the measurement capabilities are illustrated.
机译：光谱双向散射分布函数（BSDF）提供了材料光谱和空间光学特性的完整描述。任何光泽度和颜色测量都可能与BSDF的特定值有关，而使用光线跟踪软件进行精确的灯具设计需要使用反射器和滤光片的BSDF。文献中已经报道了许多测量仪器，每个都有特殊的优点和局限性，并且包括这些仪器的概述。提出了一种测量仪器，该仪器可以绝对确定反射和透射模式下具有完整三维空间覆盖率的光谱BSDF，宽带光谱覆盖率，较大的动态范围，合理的采集时间以及较大的样品照明区域。讨论了仪器的主要特性，并说明了测量能力。

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