Stackable 'holobricks' can make giant 3D images
The researchers, from the University of Cambridge and Disney Research, developed a holobrick proof-of-concept, which can tile holograms together to form a large seamless 3D image. This is the first time this technology has been demonstrated and opens the door for scalable holographic 3D displays.
"Delivering an adequate 3D experience using the current technology is a huge challenge," said Professor Daping Chu from Cambridge's Department of Engineering, who led the research."Over the past ten years, we've been working with our industrial partners to develop holographic displays which allow the simultaneous realisation of large size and large field-of-view, which needs to be matched with a hologram with a large optical information content.
For 2D displays, it's standard practice to tile small size displays together to form one large display. The approach being explored here is similar, but for 3D displays, which has not been done before."Joining pieces of 3D images together is not trivial, because the final image must be seen as seamless from all angles and all depths," said Chu, who is also Director of the Centre for Advanced Photonics and Electronics .
Each of the holobricks uses a high-information bandwidth spatial light modulator for information delivery in conjunction with coarse integrated optics, to form the angularly tiled 3D holograms with large viewing areas and fields of view.
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