1 January 1998 Multifringe pattern analysis of circular zone plates
Joseph Pegna, Thierry P. Hilaire
Author Affiliations +
We introduce the linearized perturbation method to find the center of a set of concentric circular fringes. The mathematical foundations of the method presented here are instrumental in the design of a two-dimensional interferometric position sensor, which uses the geometry of the fringe pattern rather than the wavelength. A wavelength-independent physical characteristic of the fringe pattern is derived, which relates the radii of successive fringes. The linearized perturbation method is formulated for multiple fringes as a constrained quadratic optimization problem. Experimental calibrations have shown that using physical constraint information significantly improves the precision on the center position.
Joseph Pegna and Thierry P. Hilaire "Multifringe pattern analysis of circular zone plates," Journal of Electronic Imaging 7(1), (1 January 1998). https://doi.org/10.1117/1.482642
Published: 1 January 1998
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Cited by 3 scholarly publications.
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KEYWORDS
Calibration

Fringe analysis

Interferometers

Wavefronts

Spherical lenses

Zone plates

Metrology

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