Quantitative Shadow Method For Measuring A One-Dimensional Refractive Index Distribution

Robert W. Lewis

doi:10.1117/12.933932

1 August 1983 Quantitative Shadow Method For Measuring A One-Dimensional Refractive Index Distribution

Robert W. Lewis

Proceedings Volume 0351, Wavefront Sensing; (1983) https://doi.org/10.1117/12.933932
Event: 26th Annual Technical Symposium, 1982, San Diego, United States

Abstract

A quantitative shadow method was developed and tested by measuring the one-dimensional refractive index distribution of a polished slab of gradient index glass. Tests made on the known glass sample showed that a one-dimensional index distribution can be measured by shadowgraphy to better than one percent accuracy. The method uses simple optics and can easily be automated to perform rapid measurements. Extension of the shadow method to more general distributions requires making many traverses of the refractive index distribution with a narrow sheet of light.

Citation Download Citation

Robert W. Lewis "Quantitative Shadow Method For Measuring A One-Dimensional Refractive Index Distribution", Proc. SPIE 0351, Wavefront Sensing, (1 August 1983); https://doi.org/10.1117/12.933932

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