Holographic display based on a spatial DMD array

Abstract

The image space of the reconstructed image from the hologram displayed on a digital micromirror device (DMD) is defined by the diffraction pattern induced by the 2D pixel pattern of the DMD, which works as a 2D blazed grating. Within this space, a reconstructed image of $100\mathrm{mm}\times 20\mathrm{mm}$ is spatially multiplexed by a $2\times 5$ DMD array that is aligned on a board, without using any extra optics. Each DMD chip reconstructs an image piece of the size $20\mathrm{mm}(\text{width})\times 10\mathrm{mm}(\text{height})$. The reconstructed image looks somewhat noisy but regenerates the original object image faithfully.

© 2013 Optical Society of America

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