Optimization of setups by means of geometric functions

Werner P. O. Jueptner

doi:10.1117/12.140764

5 February 1993 Optimization of setups by means of geometric functions

Werner P. O. Jueptner

Proceedings Volume 1755, Interferometry: Techniques and Analysis; (1993) https://doi.org/10.1117/12.140764
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

Holographic interferometry promises highly accurate and precise measurement of displacement or deformation. Modern fringe evaluation systems allow determination of the relative fringe order down to less than one percent, and are expected to have the same accuracy in the evaluated dislocation and deformation field. However, one should recognize that accuracy starts with the optimization of the set-up and ends with it. A method to optimize the set-up for holographic interferometric measurements and to predict the sensitivity for the different displacements is reported. The method is developed from the holo-diagram by a quantification of the change of the light way. This leads to functions which describe the sensitivity of the set-up for displacements in the different directions. These functions are called the geometric functions. The values of the geometric functions at a given point are identical with the components of the sensitivity vector. The potential to optimize set-ups by means of these functions is shown by an example.

Citation Download Citation

Werner P. O. Jueptner "Optimization of setups by means of geometric functions", Proc. SPIE 1755, Interferometry: Techniques and Analysis, (5 February 1993); https://doi.org/10.1117/12.140764

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