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Miniature holographic projector with cloud computing capability

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Abstract

A fully functional miniaturized projection head below 5cm3 is presented, using computer-generated holograms dynamically displayed on a liquid-crystal spatial light modulator. Spatial division of the modulator is used for color projection without color breakup, and specially designed, anti-reflection coated prisms ensure simple light paths with small losses. Real-time calculations are performed on a remote server with on-the-fly compression of holographic fringes. Cloud computing allows 1 W of local electrical power usage and apparent image brightness equivalent to 15–500 lm/W efficiency, depending on the displayed content. The properties of the projector allow future applications in handheld displays.

© 2019 Optical Society of America

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Supplementary Material (1)

NameDescription
Visualization 1       Holographic real time projection in color

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