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Specifications: Figure and Finish are not enough

机译:规格:图和完成还不够

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Several examples are given of optics apparently specified only by figure and finish. Although these optics met thespecifications they did not produce good images. The presumed reason for the poor performance was the lack of aspecification for mid-spatial frequency roughness. We show that a reasonable specification can be applied using theconcept of a structure function, a mathematically simple function easily calculated from interferometric phase data ateach pixel. An example wavefront is used to show how the specification can be developed from typical figure and finishspecifications and include information about roughness in the mid-spatial frequency region.
机译:几个例子是由图解和完成的光学器件。虽然这些光学元件符合他们没有产生良好图像的特殊性。出现差的表现不佳的原因是中空频率粗糙度缺乏占用。我们表明,可以使用结构函数的Choncept,从干涉阶段数据天动像素容易地计算的数学上简单的功能来应用合理的规范。一个示例波前将用于展示如何从典型的数字和表面结构开发规范,并包括关于中间空间频率区域中的粗糙度的信息。

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