Title :
Increasing the dynamic range of a point diffraction interferometer by simultaneous processing of local interferograms: Application to ophthalmic optics
Author :
Acosta, Eva ; Hernandez, Roberto ; Bosch, Salvador ; Vallmitjana, Santiago
Author_Institution :
Dept. de Fis. Aplic. (Area de Opt.), Univ. de Santiago de Compostela, Santiago de Compostela, Spain
Abstract :
The use of a point diffraction interferometer (PDI) to characterize highly aberrated wavefronts (HAWs) is proposed. The PDI is a cheap and robust interferometer that allows recording several interferograms within a region of interest (ROI). Since each individual interferogram does not usually provide fringes covering all the ROI, the aim of this communication is to develop a procedure for the joint fit of a common expansion functions able to calculate the phase in the whole ROI.
Keywords :
aberrations; light diffraction; light interferometers; ophthalmic lenses; common expansion functions; dynamic range; highly aberrated wavefronts; local interferograms; ophthalmic optics; point diffraction interferometer; Diffraction; Joints; Lenses; Optical diffraction; Optical interferometry; Robustness; Shape; interferograms; local wavefront curvatures; ophtalmic optics; point diffraction interferometer;
Conference_Titel :
Information Optics (WIO), 2013 12th Workshop on
Conference_Location :
Puerto de la Cruz
DOI :
10.1109/WIO.2013.6601256
