EPJ Web of Conferences 48, 00016 (2013)
https://doi.org/10.1051/epjconf/20134800016

Technique for 3D shape reconstruction of spherical and aspheric surfaces using deflectometric principle

Czech Technical University in Prague, Faculty of Civil Engineering, Department of Physics, Thakurova 7, 16629 Prague, Czech Republic

Abstract

We provide a description and analysis of a deflectometric technique for 3D measurements of optically smooth surfaces. It is presented that a surface reconstruction problem leads to a theoretical description by a nonlinear partial differential equation. Then, a surface shape can be calculated by solution of a derived equation. The presented method is noncontact and no reference surface is needed as in interferometry.