A projection moiré interferometer for topography is presented, which uses liquid crystal light modulators for both projection and demodulation grid. High resolution is obtained by optical demodulation, the 4-bucket algorithm and discrete grid averaging theory.
© 2008 Optical Society of America
(110.0110) Imaging systems : Imaging systems
(110.6880) Imaging systems : Three-dimensional image acquisition
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.4120) Instrumentation, measurement, and metrology : Moire' techniques
J. A. Buytaert and J. J. Dirckx, "Projection Moiré Profilometer Using Computer Generated Projection and Demodulation Grids on Liquid Crystals," in Laser Applications to Chemical, Security and Environmental Analysis, OSA Technical Digest (CD) (Optical Society of America, 2008), paper JMA11.
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