Varifocal zone plates obtained by moire

Rodrigo H. Henao; A. Mira; Zbigniew Jaroszewicz; Andrzej Kolodziejczyk

doi:10.1117/12.591698

21 October 2004 Varifocal zone plates obtained by moire

Rodrigo H. Henao, A. Mira, Zbigniew Jaroszewicz, Andrzej Kolodziejczyk

Proceedings Volume 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications; (2004) https://doi.org/10.1117/12.591698
Event: 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, 2004, Porlamar, Venezuela

Abstract

Moire patterns in the form of equilateral hyperbolic zone plates have been studied. They are created by a mutual rotation of basic grids which turn out to be zone plates described by conic curves and include as a special case hyperbolic and elliptical zone plates. The obtained moire zone plates change their focal length in function of the rotation's angle between the superposed grids that generated them and therefore they can be of interest in three-point method used for determination of small displacements of great engineering structures. Simulations as well as experimental results are presented.

Citation Download Citation

Rodrigo H. Henao, A. Mira, Zbigniew Jaroszewicz, and Andrzej Kolodziejczyk "Varifocal zone plates obtained by moire", Proc. SPIE 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, (21 October 2004); https://doi.org/10.1117/12.591698

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KEYWORDS

Moire patterns

Zone plates

Binary data

Superposition

Computer programming

Numerical simulations

Structural engineering

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