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Proceedings Paper

Display system architectures for digital micromirror device (DMD)-based projectors
Author(s): James M. Florence; Lars A. Yoder
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Paper Abstract

The Digital Micromirror Device (DMDTM) developed by Texas Instruments is a highly useful Micro-Opto-Electro-Mechanical Structures (MOEMS) device that enables high quality projection display. Acting as a semiconductor light switch, the DMD can modulate incident light to produce truly digital projection display systems. Illumination and projection optics are described for three fundamental display system architectures based on the DMD light modulator. These systems include one, two, and three DMD configurations all producing full color image projection. The single device configuration implemented with a rotating color filter system represents the least system hardware while providing the capability of full color and a high brightness monochromatic mode. A two device configuration using a rotating color filter combined with a secondary color splitting filter is of particular interest when using a light source that is spectrally imbalanced. The two device configuration is also capable of a high brightness monochromatic mode of operation. The three device configuration is the most efficient with respect to light throughput considerations providing the highest brightness full color projection with the DMD light modulators. Comparisons of system performance characteristics are described indicating the features of each configuration.

Paper Details

Date Published: 29 March 1996
PDF: 16 pages
Proc. SPIE 2650, Projection Displays II, (29 March 1996); doi: 10.1117/12.237004
Show Author Affiliations
James M. Florence, Texas Instruments Inc. (United States)
Lars A. Yoder, Texas Instruments Inc. (United States)

Published in SPIE Proceedings Vol. 2650:
Projection Displays II
Ming Hsien Wu, Editor(s)

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