19 October 2005 Wavefront sensing with varying transmission filters: past, present, and future
Author Affiliations +
The use of Wavefront Sensors (WFS) is nowadays essential in the field of instrumental optics. In this communication, I present and discuss the principle of a new, recently proposed family of WFS. Their principle consists in evaluating the slopes of the Wavefront Errors (WFE) by means of varying density filters placed into the image plane of the tested optical system (the device is sometimes called "optical differentiation WFS"). The wavefronts are reconstructed from the obtained slopes digitally. Various luminous sources of different wavelengths, spectral widths and spatial sizes can be employed. The capacities of the method are discussed from the geometrical and Fourier optics points of view, then illustrated by a few numerical simulations showing some examples of practical applications. Two different measurement configurations are also schematically described and commented.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
François Hénault, François Hénault, } "Wavefront sensing with varying transmission filters: past, present, and future", Proc. SPIE 5965, Optical Fabrication, Testing, and Metrology II, 596513 (19 October 2005); doi: 10.1117/12.624780; https://doi.org/10.1117/12.624780


Wavefront sensing
Proceedings of SPIE (November 27 2007)

Back to Top