Liquid-crystal point-diffraction interferometer (LCPDI) invented to combine flexible control of liquid-crystal phase-shifts with robustness of point-diffraction interferometers. Produces interferograms indicative of shapes of wavefronts of laser beams having passed through or reflected from objects of interest. Interferograms combined in computers to produce phase maps describing wavefronts.
Liquid-Crystal Point-Diffraction Interferometer
NASA Tech Briefs ; 20 , 6
1996-06-01
Miscellaneous
No indication
English
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