In this research, a color grating projection system is designed to effectively and flexibly display spatially sampled large size and high resolution color Fresnel hologram. The sampled color Fresnel hologram is placed in the image plane of projection system. The parameters of color grating are adjusted for 3D color display. Specifically, one effective scheme of spatially sampled color Fresnel hologram is used for reducing the data redundancy of computer generated Fresnel hologram while keeping a high resolution of reconstructed 3D image. A hologram with the size of 30mm×30mm at the resolution of 94208×94208 is calculated and optically reconstructed to verify the proposed display system.
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