A new concave semi-cylindrical reflection holographic stereogram, called the "reflection alcove hologram," offers computer-generated 3-D real images that project within the alcove space and offer a very wide angle of view. The hologram is viewed with a white light source, and is extendable to full-color imaging.
Stephen A Benton,
"The Reflection Alcove Hologram: A Computer-Graphic Holographic Stereogram", Proc. SPIE 0884, Computer-Generated Holography II, (24 May 1988); doi: 10.1117/12.944167; https://doi.org/10.1117/12.944167