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Focusing properties of hemispherical mirrors for total integrating scattering instruments

机译:用于整体积分散射仪的半球形反射镜的聚焦特性

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Focusing properties are derived of a hemispherical mirror (also called a Coblentz sphere) used in total integrated scattering (TIS) instruments for the measurement of surface roughness. Analytical formulas for the scattered-light dependence on scattering angle and on the position of the photodetector and sample (with respect to the hemisphere) are given. From these formulas one can estimate useful parameters related to the construction and performance evaluation of TIS instruments, including spherical aberration of the hemispherical mirror, solid angle of the scattered Light collected by a photodetector of a given size, and optimal size of the photodetector and its position with respect to the basal plane of the mirror. (C) 1997 Optical Society of America.
机译:聚焦特性源自半球形反射镜(也称为Coblentz球),该半球形反射镜用于总积分散射(TIS)仪器中,用于测量表面粗糙度。给出了散射光与散射角以及光电探测器和样品(相对于半球)位置的关系的解析公式。从这些公式中,可以估算出与TIS仪器的结构和性能评估有关的有用参数,包括半球镜的球差,给定尺寸的光电探测器收集的散射光的立体角,以及光电探测器及其最佳尺寸。相对于镜子底面的位置。 (C)1997年美国眼镜学会。

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