3 May 2000 Image-tiling system using optically addressed spatial light modulator for high-resolution and multiview 3D display
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A miniature electrically addressed spatial light modulator (EASLM) using standard CMOS processing comprises a crystalline silicon transistor array underlying a layer of ferroelectric liquid crystals and is intended for use in optical information processing as a high-frame rate input device. But the resolution is insufficient for modern video display. We have investigated a display system that tile the image from the EASLM on a pixilated optically addressed spatial light modulator (OASLM) using a binary phase hologram. This system consists of a ferroelectric liquid crystal EASLM with 320 X 240 pixels, a high frame rate video signal controller, a 532 nm laser as a light source of video projector, a binary phase hologram for 4 X 4 image multiplying and a 4 X 4 pixilated OASLM, with the optics for projecting video images. The threshold sensitivity of the OASLM is about 10 (mu) W/cm2 and its spatial resolution is about 50 lp/mm. The binary phase hologram is designed to fan out the asymmetric project image into 3 X 4 in the ratio of horizontal and vertical size for being memorized on the one part of the pixilated OASLM. The experimental value of the diffractive efficiency of the hologram is quite similar to the theoretical value, but the zeroth of diffractive beam is not removed completely. The displayed video image has a very high-resolution of 1280 X 960 pixels or a 3D display of 4 X 4 multiviews, depending on the images of the video projector.
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Hyung-Wook Jeon, Hyung-Wook Jeon, Adrian R. L. Travis, Adrian R. L. Travis, Neil Collings, Neil Collings, Tim D. Wilkinson, Tim D. Wilkinson, Y. Frauel, Y. Frauel, } "Image-tiling system using optically addressed spatial light modulator for high-resolution and multiview 3D display", Proc. SPIE 3957, Stereoscopic Displays and Virtual Reality Systems VII, (3 May 2000); doi: 10.1117/12.384439; https://doi.org/10.1117/12.384439

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