Colour volumetric display based on holographic-laser-excited graphics using drawing space separation

Abstract

A volumetric display generates a graphics that can be viewed from 360$$^{\circ }$$ ∘ by representing the 3D information of an object as voxels in physical space. However, the natural properties of physical objects, such as 3D information and colors, and the seamless relationships between graphics and humans make it difficult to implement such displays. Here, we introduce a novel system that combines the spatial generation of femtosecond-laser-excited emission points using computer-generated holograms and beam scanning with the drawing space separation method. We demonstrate the drawing of volumetric graphics that can be color-expressed in voxel units in the air. This system enables the drawing of volumetric graphics in the air, accurate color representations, and robust graphics that are not destroyed by contact with users or objects. It also lays the foundation for the implementation of future volumetric displays.

OptiTrap: Optimal Trap Trajectories for Acoustic Levitation Displays

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Performance improvement for additive light field displays with weighted simultaneous algebra reconstruction technique and tracked views

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“…4 Volumetric displays are free from vergence-accommodation conflict by illuminating "voxels" distributed truly in the 3D space. 5 But for the same reason, spatial occlusion and large display space are hard to realize. Holography can reconstruct scenes over a large depth range with a very small pixel interval.…”