Numerical investigation of lensless zoomable holographic multiple projections to tilted planes

TL;DR

This paper explores lensless, zoomable holographic projections capable of projecting multiple images onto tilted planes, expanding the functionality of previous single, parallel-plane holographic projections.

Contribution

It introduces a novel method for lensless, zoomable holographic projection that can project onto multiple tilted planes simultaneously, unlike prior single-plane approaches.

Findings

Successful numerical demonstration of multi-image projection onto tilted planes.

Extension of scaled diffraction technique to multiple tilted surfaces.

Potential for simpler, lensless holographic projection systems.

Abstract

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.