Holographic projection method to realize adjusting location of reconstruction

In this paper, we propose a holographic projection method to realize adjusting location of reconstruction. By loading the hologram of a lens on a spatial light modulator (SLM), we can use the SLM instead of the lens. We combine the hologram of the lens with that of the object to realize the adjusting location of the reconstructed image by programming. The results show the images can be displayed at different distances. Besides, by using the spatial multiplexing method, we can adjust the location of color images based on the SLM. The experimental results verify the feasibility of the method.