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Arasa J, Royo S, Tomàs N. Simple method for improving the sampling in profile measurements by use of the Ronchi test. Appl Opt. 2000;39(25):4529-34doi: 10.1364/ao.39.004529.
Arasa, J., Royo, S., & Tomàs, N. (2000). Simple method for improving the sampling in profile measurements by use of the Ronchi test. Applied optics, 39(25), 4529-34. https://doi.org/10.1364/ao.39.004529
Arasa, J, et al. "Simple method for improving the sampling in profile measurements by use of the Ronchi test." Applied optics vol. 39,25 (2000): 4529-34. doi: https://doi.org/10.1364/ao.39.004529
Arasa J, Royo S, Tomàs N. Simple method for improving the sampling in profile measurements by use of the Ronchi test. Appl Opt. 2000 Sep 01;39(25):4529-34. doi: 10.1364/ao.39.004529. PMID: 18350040.
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Appl Opt. 2000 Sep 01;39(25):4529-34. doi: 10.1364/ao.39.004529.

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

Applied optics

J Arasa, S Royo, N Tomàs

Affiliations

  1. Center for the Development of Sensors, Instrumentation and Systems (CD6), Universitat Politècnica de Catalunya, Violinista Vellosolà 37 E-08222 Terrassa, Spain. [email protected]

PMID: 18350040 DOI: 10.1364/ao.39.004529

Abstract

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 the capability of the technique to measure topographic profiles of reflective samples.

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