Single DMD time-multiplexed 64-views autostereoscopic 3D display

Luigi Loreti

doi:10.1117/12.2003083

8 March 2013 Single DMD time-multiplexed 64-views autostereoscopic 3D display

Luigi Loreti

Proceedings Volume 8618, Emerging Digital Micromirror Device Based Systems and Applications V; 86180Q (2013) https://doi.org/10.1117/12.2003083
Event: SPIE MOEMS-MEMS, 2013, San Francisco, California, United States

Abstract

Based on previous prototype of the Real time 3D holographic display developed last year, we developed a new concept of auto-stereoscopic multiview display (64 views), wide angle (90°) 3D full color display. The display is based on a RGB laser light source illuminating a DMD (Discovery 4100 0,7”) at 24.000 fps, an image deflection system made with an AOD (Acoustic Optic Deflector) driven by a piezo-electric transducer generating a variable standing acoustic wave on the crystal that acts as a phase grating. The DMD projects in fast sequence 64 point of view of the image on the crystal cube. Depending on the frequency of the standing wave, the input picture sent by the DMD is deflected in different angle of view. An holographic screen at a proper distance diffuse the rays in vertical direction (60°) and horizontally select (1°) only the rays directed to the observer. A telescope optical system will enlarge the image to the right dimension. A VHDL firmware to render in real-time (16 ms) 64 views (16 bit 4:2:2) of a CAD model (obj, dxf or 3Ds) and depth-map encoded video images was developed into the resident Virtex5 FPGA of the Discovery 4100 SDK, thus eliminating the needs of image transfer and high speed links

Citation Download Citation

Luigi Loreti "Single DMD time-multiplexed 64-views autostereoscopic 3D display", Proc. SPIE 8618, Emerging Digital Micromirror Device Based Systems and Applications V, 86180Q (8 March 2013); https://doi.org/10.1117/12.2003083

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KEYWORDS

Digital micromirror devices

3D displays

Crystals

Holography

Light sources

Mirrors

Light

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