Simple method for improving the sampling in profile measurements by use of the Ronchi test

被引：13

作者：

Arasa, J ^{[1
]}

Royo, S ^{[1
]}

Tomàs, N ^{[1
]}

机构：

[1] Univ Politecn Cataluna, Ctr Dev Sensors Instrumentat & Syst CD6, E-08222 Terrassa, Spain

来源：

APPLIED OPTICS | 2000年 / 39卷 / 25期

关键词：

D O I：

10.1364/AO.39.004529

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a simple method for increasing the number of data points obtained during performance of profilometric measurements with the Ronchi test. The method is based on multiple ronchigram acquisitions that are superimposed after a few very simple data-processing operations. The measurement method, experimental setup, and data processing are described in detail from the ronchigram to the measured profile, and experimental results for a concave surface of an spherical ophthalmic lens are provided. The radius of curvature values measured for that surface are compared with the ones obtained with a high-precision radioscope, showing very good agreement and demonstrating capability of the technique to measure topographic profiles of reflective samples. (C) 2000 Optical Society of America OCIS codes: 120.3930, 120.3940, 120.4800, 120.6650, 120.4290.

引用

页码：4529 / 4534

页数：6

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