Optical EngineeringInfluence of optical imaging on phase measurements in fringe projection coherent systems
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The influence of an imaging system on the measurement error in coherent fringe projection methods is analyzed. The analyses are related to geometrical configurations and aberrations of optical systems. The problem is particularly important for full-field interferometry, where the aberrations are different for different field points. The analysis of the influence of geometrical and aberration parameters on measurement results for a chosen object is based on the harmonic approach to optical imaging. Theoretical considerations are supported by computer calculations.