A analysis about the error which using linear CCD to measure the interference fringe

摘要

In the measurement of interference fringe using the linear CCD, thinking of the separation of CCD, the integral effect of the pixel, and the sampling speciality of the interference fringe (cosine signal), three problems have been discussed seriously╚D"how to determine the advisable maximum of the spatial frequency of the fringe", "the effect on the sampling of the integral effect of the pixel", and "the effect on the contrast ratio of the fringe of the phase matching of the pixel".