Multichannel computer generated holograms

Detour phase computer generated holograms still remain under research due to their interesting characteristics. Many researchers have proposed several multiplexing methods, using detour holograms, where they have been able to perform an image reconstruction in various diffraction orders. As a new approach, we propose handling two or three flat partial objects (FPO) (sections of a whole flat object), that will be stored in a hologram, in such a way that an image addition is carried out with the recovering being in the same or different direction and same diffraction order. The used FPOs can be parts of a larger one, so a direct application of this method is to reunite as a whole, several flat partial images from corresponding FPOs.