Deflectometry as a technique to assess reflective surfaces has now existed for some 40
years. Its different aspects and variations have been studied in multiple theses and research …

The fast development in the fields of integrated circuits, photovoltaics, the automobile
industry, advanced manufacturing, and astronomy have led to the importance and necessity …

Modern advanced manufacturing and testing technologies allow the application of freeform
optical elements. Compared with traditional spherical surfaces, an optical freeform surface …

Incorporating the modal and zonal estimation approaches into a unifying scheme, we
introduce an improved three-dimensional shape reconstruction version of specular surfaces …

A method for geometric distortion correction and space and time-varying blur reduction is
proposed, which can recover the high-quality image from a single-frame image distorted by …

Wavefront estimation from the slope-based sensing metrologies zis important in modern
optical testing. A numerical orthogonal transformation method is proposed for deriving the …

A new zonal wavefront reconstruction method for lateral shearing interferometry was
presented. The proposed algorithm allows shear amounts equal to arbitrary integral multiple …

We discuss error propagation in the slope-based and the difference-based wavefront
estimations. The error propagation coefficient can be expressed as a function of the …

The shape reconstruction from gradient data is a common problem in many slope-based
metrology applications. In practice, the gradient data may not be ideally available for the …

In adaptive optical microscopy of thick biological tissue, strong scattering and aberrations
can change the effective pupil shape by rendering some Shack-Hartmann spots unusable …