Researchers
from the University of Science and Technology of China and the National
University of Singapore have developed a new way to create
ultrahigh-density 3D holographic projections.
This
new hologram technique could enable realistic representations of the
world around us for use in virtual reality and other applications.
- The
new approach, three-dimensional scattering-assisted dynamic holography
(3D-SDH), achieves a depth resolution of more than three orders of
magnitude greater than state-of-the-art methods for multiplane
holographic projection.
- To create the hologram, the researchers
combined a spatial light modulator with a diffuser that enables
multiple image planes to be separated by a much smaller amount without
being constrained by the properties of the SLM.
- The researchers validated the concept experimentally by building a prototype 3D-SDH projector to create dynamic 3D projections.
- They showed that 3D-SDH improved axial resolution of more than three orders of magnitude over the traditional counterpart.
- The
setup enables ultrahigh-density 3D holographic projection by
suppressing crosstalk between the aircraft and exploiting the scattering
of light and wavefront shaping.
- The
current 3D holograms the researchers demonstrated are all point-cloud
3D images, meaning they cannot present the solid body of a 3D object.
