A part of this report was introduced in the August 2023 issue of our periodical, “Yano E plus.”

– 3D Hologram is Technology that Projects Three-Dimensional Videos as if the Objects were in Front of You; The Technology Makes it Possible to Project 3D Videos in an Empty Space –

1. What is a Three-Dimensional Video?

2. Types of Three-Dimensional Displays

　　2-1. Multi-View Displays

1) Twin-View Display

2) Multi-View Display (More Than Two Views)

　　2-2. Spatial Image Reproduction

1) Holographic Three-Dimensional Displays

2) Integral Three-Dimensional Displays

3. Market Size

4. What Companies and Research Institutes Do

　　4-1. Utsunomiya University

1) Expansion of Use of and Promotion of International Standardization of Aerial Displays and Promotion

2)Application to Entertainment

3) Aerial Imaging by Retro-Reflection (AIRR) Optical System by Retroreflection Combining Two Transparent Spheres Conjugately

4) Development of Contactless Operation Next-Generation HMI and Aerial Display/Input Device “Stealth Aerial Interface”

　　4-2. Kansai University

1) Production of Large-Scale Omnidirectional Parallax CGH

2) Production of Color Animation While Maintaining Holography Size and Viewing Angle

3) Future Development

　　4-3. Kindai University

　　4-4. Tokyo University of Agriculture and Technology

1) Phase Delay Principle of Metamaterials

2) Metasurface Lens “Metalens”

3) Rotational Variable Focus Lens

4) Polarized and Separated Metalens for Long-Wave Infrared

5) Animating Metasurface High-Quality Holography

      4-5. Nihon University

1) Research Results at MIT

2) Principle of Hologram

3) Computer-Synthesized Hologram

4) Hologram Printer

5) Faster Computation

5. Future Prospects