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Author

N. Devaney

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3 papers indexed here

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Open access Aug 2026

Influence of the aberration structure on the accuracy of thin-diffuser wavefront sensing.

We present a theoretical and numerical analysis on how the aberration structure governs speckle decorrelation and, consequently, thin-diffuser wavefront sensor (TDWFS) performance. A field decomposition is developed that separates quadratic and higher-order wavefront contributions, distinguishing purely geometric speck...

Daniel Leporda, N. Devaney · 0 citations
Conference Open access 2026

Reconstruction of freeform optical surfaces based on radial Zernike expansion and ray-traced fringes

Freeform optical surfaces are essential for advanced optical systems due to their design flexibility, but accurate reconstruction is challenging because of geometric complexity and inflection regions. This work numerically models a circular freeform surface with a 111 mm diameter, a peak-to-valley (PV) sag of 3.5 mm, a...

D. Ibrahim, N. Devaney · 0 citations
Open access Sep 2026

On the manufacturing and metrology of rotationally symmetric aspheric and freeform surfaces using ray-traced fringe analysis and zernike polynomial reconstruction

In the numerical modeling of rotationally symmetric aspheric surfaces, artificial asymmetries often arise in the computed radius of curvature due to finite-difference approximations. These numerical artifacts, particularly along the X- and Y-axes, can distort two-dimensional curvature maps and compromise accuracy in...

D. Ibrahim, N. Devaney · 0 citations

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