1 June 1973 Lens Testing with a Wavefront Shearing Interferometer
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Optical Engineering, 12(3), 123108 (1973). doi:10.1117/12.7971641
A wavefront shearing interferometer for testing lenses has been developed at the National Bureau of Standards. In contrast to most interferometric test systems, the wavefront shearing interferometer is inexpensive, portable, relatively insensitive to vibration, does not need laser illumination, and requires only a minimum of experimental time and operational expertise. Reading of the interferograms and subsequent data reduction require the major effort in testing with the wavefront shearing interferometer. However, with automatic scanning of the interferograms and a high-speed electronic computer to perform the analysis, the data reduction may be completely automated.
D. Nyyssonen, J. M. Jerke, "Lens Testing with a Wavefront Shearing Interferometer," Optical Engineering 12(3), 123108 (1 June 1973). https://doi.org/10.1117/12.7971641

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