Improved technique for measurement of a long radius of curvature by a digital moire method

Hong Zhang; Michael J. Lalor; David R. Burton

doi:10.1117/12.316461

6 July 1998 Improved technique for measurement of a long radius of curvature by a digital moire method

Hong Zhang, Michael J. Lalor, David R. Burton

Proceedings Volume 3479, Laser Interferometry IX: Applications; (1998) https://doi.org/10.1117/12.316461
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

We describe a simple method for measuring a long radius of curvature based on the rotatable wedge plate shearing interferometer and a digital moire method. Detailed analysis of the principle of measurement and a description of the experiment are presented. The achievable accuracy of the measurement and the experimental results are discussed.

Citation Download Citation

Hong Zhang, Michael J. Lalor, and David R. Burton "Improved technique for measurement of a long radius of curvature by a digital moire method", Proc. SPIE 3479, Laser Interferometry IX: Applications, (6 July 1998); https://doi.org/10.1117/12.316461

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KEYWORDS

Moire patterns

Mirrors

Shearing interferometers

Wavefronts

Fringe analysis

Glasses

Beam splitters

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