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Related Experiment Video

Updated: Jul 6, 2026

Employing the Forced Oscillation Technique for the Assessment of Respiratory Mechanics in Adults

Employing the Forced Oscillation Technique for the Assessment of Respiratory Mechanics in Adults

Published on: February 9, 2022

Improved Ronchi tester.

J M Nuñez-Alfonso¹, A Cordero-Dávila, S Vergara-Limon

¹Facultad de Ciencias Físico Matemáticas, Posgrado en optoelectrónica, Benemérita Universidad Autónoma de Puebla, Puebla 72000, México. mnunez@fcfm.buap.mx

|March 22, 2008

Summary

This summary is machine-generated.

A new LED setup for Ronchi testers allows for selectable wavelengths and adjustable illumination intensity. These improvements enhance the analysis of optical systems and detector arrays.

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Area of Science:

Optical Engineering
Metrology

Background:

Ronchi testing is a common interferometric method for optical surface analysis.
Traditional Ronchi testers often lack flexibility in illumination control.

Purpose of the Study:

To introduce an enhanced LED illumination system for Ronchi testers.
To improve the adaptability and precision of the Ronchi testing method.

Main Methods:

Integration of a Light Emitting Diode (LED) into a Ronchi tester setup.
Implementation of an electronic circuit for controlling illumination wavelength and irradiance.
Recording ronchigrams under varied optical conditions.

Main Results:

Demonstrated ability to select between two distinct wavelength bands for illumination.
Achieved adjustable control over illumination source irradiance.
Successful application in testing diverse optical systems and detector arrays.

Conclusions:

The enhanced LED illumination system offers significant improvements in Ronchi testing flexibility.
Adjustable wavelength and irradiance enable more precise optical system characterization.
This advancement facilitates better adaptation to various testing scenarios.