The current generation of holograms are generally monotone creations, requiring a single colour laser to construct. However, Japanese researchers have devised a new type of hologram technology that could be just around the corner.
They work with normal light and can produce full-colored 3D images — where the color stays the same no matter how you look at it.
This new technology works by hitting a thin metal film with three beams of white light, each from a different angle. Each beam excites a different color of light, which then passes through an RGB hologram, combining to form a full-color 3D image. The technique promises to more efficient, simpler, and more scalable than current color holograms.
These new holograms wouldn’t require special glasses or a restricted viewing angle, nullifying two of the major problems with present 3D technology.