Minimizing moire fringes in contact-type 3-dimensional imaging systems

Analytical solution for the elimination of moire fringes for high quality image display in current 3-D image display is presented. The model screen is consisted of 2 layers of squared grids. The problem is finding the angle of superposing these two pairs, which provides moire fringe with the height period without regards to the pitch ratio of the two gratings of different pairs.