Aerial 3D shaped display with AIRR and aerial hollow-face illusion (Conference Presentation)

Hirotsugu Yamamoto; Nao Kurokawa

doi:10.1117/12.2559789

4 May 2020 Aerial 3D shaped display with AIRR and aerial hollow-face illusion (Conference Presentation)

Hirotsugu Yamamoto, Nao Kurokawa

Proceedings Volume 11402, Three-Dimensional Imaging, Visualization, and Display 2020; 114020M (2020) https://doi.org/10.1117/12.2559789
Event: SPIE Defense + Commercial Sensing, 2020, Online Only

Abstract

This paper proposes optical systems to form a 3D shaped information screen with aerial imaging by retro-reflection (AIRR). AIRR employs three elements, which are a light source, a beam splitter, and a retro-reflector. The retro-reflector converges the retro-reflected lights to the plane-symmetrical position of the light source regarding the beam splitter. AIRR features a wide viewing angle, a large-size scalability, and a low cost with mass-productive process. Normally, a flat-panel display (FPD) panel is used for the light source. Therefore, the formed aerial image has a 2D plane shape. In this paper, a projector and a 3D shaped screen compose the light source. We have investigated optical arrangements to show a complex 3D screen in the mid-air for a wide viewing angle. The complex shape screen is surrounded by retro-reflectors, beneath which the projector is located. We have formed an aerial polyhedral image as well as an aerial curved information screen. Furthermore, we have investigated so-called hollow face illusion effect by showing an aerial 3D image. Conventionally, hollow face illusion has been reported that a concave mask of face is perceived as a normal convex face under observation with a single eye. We used a 3D shaped screen and projected a texture on it. This projection mapped 3D screen is used for the light source in the AIRR. We have formed a variety of aerial 3D images of which depth is inverted. We have succeeded in evoking the depth-inverted perception even under binocular viewing conditions.

Conference Presentation

Citation Download Citation

Hirotsugu Yamamoto and Nao Kurokawa "Aerial 3D shaped display with AIRR and aerial hollow-face illusion (Conference Presentation)", Proc. SPIE 11402, Three-Dimensional Imaging, Visualization, and Display 2020, 114020M (4 May 2020); https://doi.org/10.1117/12.2559789

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KEYWORDS

3D displays

Light sources

3D image processing

Retroreflectors

Beam splitters

Projection systems

Airborne remote sensing

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