Holographic Pepper’s Ghost: Upright Virtual-Image Screen Realized by Holographic Mirror

Abstract

A holographic mirror is a reflection-type holographic optical element that works as an off-axis mirror. It realizes an upright see-through screen serving as a virtualimage display and virtual camera. Such screen enables to realize virtual-imagebased attractive applications like Pepper's ghost only with a thin optical system. This chapter describes the concept of a holographic-mirror-based virtual-image display and virtual camera, an experimental method for exposing the holographic mirror based on holographic printing, methods for dispersion compensation, and experimental results for the proposed virtual-image display and camera.

Performance assessment of multispectral digital volume reflection holography

“…The presence of the terms 𝑒 𝑗𝜗 12 𝐿 , … , 𝑒 𝑗𝜗 1𝑖 𝐿 represent cross-talk, indicating the effect of readout of DTHs recorded at other wavelengths denoted by 𝜆 𝑙 , 𝑙 = 2, … 𝑁 by 𝜆 1 , and is significantly less, as expected from a reflection grating [9].…”

[Paper] Holographic Video Communication System Realizing Virtual Image Projection and Frontal Image Capture

“…To solve this issue, the authors proposed a blur compensation optical system that uses a generalpurpose projector with a broad wavelength as a light source [13] . [17] .…”

“…HOE can be recorded by the interference of coherent lights, has high flexibility in optical design, and is a thin optical element. In earlier studies, the authors proposed dispersion compensation optical systems using diffractive optical elements (DOE) in single color [13] and in full color [14] . However, these studies were verified in either projection or capturing and had a system complexity problem in full-color systems.…”