Soltani, P.Darudi, A.Moradi, Ali RezaAmiri, J.Nehmetallah, G.2018-04-122018-04-1220160277-786Xhttp://hdl.handle.net/11693/37619Date of Conference: 17-21 April 2016Conference Name: SPIE Commercial Scientific Sensing and Imaging, 2016In this paper, the Transport of Intensity Equation (TIE) for testing of an aspheric surface is verified experimentally. Using simulation, a proper defocus distance Δo that leads to an accurate solution of TIE is estimated whenever the conic constant and configuration of the experiment are known. To verify this procedure a non-nulled experiment for testing an aspheric is used. For verification of the solution, the results are compared with the Shack-Hartmann sensor. The theoretical method and experimental results are compared to validate the results.EnglishAsphericShack-Hartmann wavefront sensorSurface inspectionTransport of intensity equationA guide to properly select the defocusing distance for accurate solution of transport of intensity equation while testing aspheric surfacesConference Paper10.1117/12.2223208