Abstract
We present an algorithm that uses a square grid in a Ronchi
test. We assume that the point coordinates of this pattern
(termed a bironchigram) are affected by Gaussian errors. To
calculate the optical path difference, we apply only one nonlinear
least-squares fit to the dot coordinates. The relevant equations
are deduced, and experimental results are shown.
© 2001 Optical Society of America
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Ronchi test with a square grid
A. Cordero-Dávila, E. Luna-Aguilar, S. Vázquez-Montiel, S. Zárate-Vázquez, and M. E. Percino-Zacarias
Appl. Opt. 37(4) 672-675 (1998)
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