Numerical investigation of lensless zoomable holographic multiple projections to tilted planes
This work addresses a limitation in holographic projection for applications requiring multi-plane displays, but it is incremental as it builds on prior single-projection methods.
The paper tackles the problem of projecting multiple images onto tilted planes using lensless holography, achieving simultaneous projection to non-parallel surfaces without lenses.
This paper numerically investigates the feasibility of lensless zoomable holographic multiple projections to tilted planes. We have already developed lensless zoomable holographic single projection using scaled diffraction, which calculates diffraction between parallel planes with different sampling pitches. The structure of this zoomable holographic projection is very simple because it does not need a lens; however, it only projects a single image to a plane parallel to the hologram. The lensless zoomable holographic projection in this paper is capable of projecting multiple images onto tilted planes simultaneously.