A general method of analyzing fringe data from interferometric testing of optical surfaces is described. The method combines the surface optimization routine with the lens design software to simulate the optical testing and to reconstruct the testing surface. With this method the residual error requirement on null lens design may be relaxed; some alignment ambiguities can be removed; and the final surface figures and tolerances can be defined. Sources of error are discussed.
"Fringe Analysis For Testing Optical Surfaces", Proc. SPIE 0966, Advances in Fabrication and Metrology for Optics and Large Optics, (29 January 1989); doi: 10.1117/12.948078; https://doi.org/10.1117/12.948078