Wednesday, 22 March 2017

Researchers develop projection-type holographic 3-D technology 

March 23, 2017
 NICT has develop a new projection-type see-through holographic 3-D display technology combining an optical screen of a digitally designed holographic optical element(DDHOE) and a digital holographic projection technique .Holographic 3-D image reconstruction was successfully demonstrated via the see-through screen  to a target observation area .

Basically ,dynamic holographic 3-D display technology faces the severe limitation of the spatial-temporal resolution of the spatial light modulator(SLM) to realize  a practical display size and visual angle. Moreover,the general system design of holographic 3-D displays requires a large optical setup behind the display window.



In this work ,a holographic 3-D image was largely projected to a see-through screen of  DDHOE by using the digital holographic projection technique. The screen was fabricated using a hologram printer ,which was developed by NICT .the light of the enlarged holographic 3-D image was thenconcentrated to a target observation area by an appropriately designed reflection function to increase the visual angle. 

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