Engineers at US company Draper have demonstrated holographic projection from a surface-emitting optical modulator that can be integrated into tablet-like displays. The demonstration suggests that 3D displays of the future will not need the glasses used for 3D viewing today. Mainstream use of truly holographic 3D displays is still likely years away, with several breakthroughs required to unlock the promise of this radically-different showing of images. 3D displays promise to enhance a persons situational understanding.
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