New Development for “Holobricks” Enable Large-Scale 3D Projections of Holographic Images and Videos
Research from Disney and the University of Cambridge has developed a new technique that can create holographic images and videos that can be produced on a larger scale...
Research from Disney and the University of Cambridge has developed a new technique that can create holographic images and videos that can be produced on a larger scale. “Holobricks” is a modular optical device whose partial projections can combine to form a seamless image.
The standard for any sci-fi film has been holograms. In reality, there are already some technologies that produce holographic videos or free-float projections but the projections themselves are still small. A large amount of data is needed for the hologram to be of a larger scale. An HD display requires a data rate of around 3GB per second for a 2D image. For a hologram of the same size and resolution, we would be talking about nearly 3TB of data per second.
Holobricks could offer a solution because each of these optical modules has to generate a section of the image.
“A holobrick is a self-contained CIH module enclosing a spatial light modulator (SLM), a scanner, and periscopic coarse integral optics. Modular CIH uses a coarse pitch and small area but high-bandwidth SLM in conjunction with periscopic coarse integral optics to form the angularly tiled 3D holograms with large viewing areas and fields of view.”
The researchers explain.
The researchers developed a proof of concept which is used to prove the feasibility of the project. The proof of concept consists of two seamlessly tiled holobricks which are the size of 1024x768 pixels. The field of view measures 40 degrees and 24 frames per second. Thus, the tiled holograms could display full 3D images.
“Over the past decade, we have been working with our industry partners to develop holographic displays that make it possible to simultaneously realize a large format and a large field of view, which must be accompanied by a hologram with a high optical information content.”
Chu, Professor at the Cambridge Department of Engineering, said.
The challenge is the final 3D image must appear seamless from all angles and depths, Chu explained. It is not simply possible for a direct tiling of 3D images in real space. The new technology is based on roughly integrated holographic displays for angular 3D images.
Holobricks are still prototypes, but the experimentation gives hope that the holographic films could be made for a large audience with the help of the technology even as a lot of research work is still necessary before it is ready.