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A simple setup for the measurement of conic surfaces using a plane-parallel plate as a null corrector

机译：使用平面平行板作为零位校正器的圆锥表面测量的简单设置

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摘要

Optical traditional interferometers are usually used to evaluate the form of spherical and plane surfaces; those systems could also assess the quality of aspheric surfaces which are quasi-spherical. But if a general aspheric surface is to be evaluated, this procedure requires the purchase of complicated and very expensive devices, such as aspheric interferometer, null-lenses, and computer generated hologram for each aspheric surface. This article presents a solid method allowing the measurement of a wide range of conical aspheric surfaces. This method is based on inserting plane-parallel plate (PPP) within the path of a laser beam coming out of a traditional Fizeau interferometer. This article also presents a mathematical justification that relates the conical surface parameters to the thickness of the inserted PPP. The article also presents the supporting computer simulations and some practical results of applying this method and its range of use.
机译：传统的光学干涉仪通常用于评估球面和平面的形状。这些系统还可以评估准球形的非球面质量。但是，如果要评估一般的非球面表面，则此过程需要购买复杂且非常昂贵的设备，例如非球面干涉仪，零透镜以及每个非球面表面的计算机生成的全息图。本文提出了一种固体方法，可以测量各种圆锥形非球面。该方法基于将平面平行板（PPP）插入传统Fizeau干涉仪发出的激光束路径中。本文还提出了将圆锥形表面参数与所插入PPP的厚度相关联的数学依据。本文还介绍了支持的计算机仿真，以及使用此方法及其使用范围的一些实际结果。

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