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Proceedings Paper

Quantitative Shadow Method For Measuring A One-Dimensional Refractive Index Distribution
Author(s): Robert W. Lewis
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Paper 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.

Paper Details

Date Published: 1 August 1983
PDF: 9 pages
Proc. SPIE 0351, Wavefront Sensing, (1 August 1983); doi: 10.1117/12.933932
Show Author Affiliations
Robert W. Lewis, GM Research Laboratories (United States)


Published in SPIE Proceedings Vol. 0351:
Wavefront Sensing
Noah Bareket; Chris L. Koliopoulos, Editor(s)

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