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Proceedings Paper

Ultrabright head-mounted displays using LED-illuminated LCOS
Author(s): Mark A. Handschy; John R. McNeil; Paul E. Weissman
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Paper Abstract

We report design and test of a high brightness laboratory-breadboard LED/LCOS HMD system employing a 0.78-inchdiagonal 1280× 768 ferroelectric liquid-crystal-on-silicon microdisplay and a red-green-blue LED. With an 8× viewing optic giving a 35°-diagonal field of view, the system yielded brightnesses greater 40,000 cd/m2 (12,000 fL) in colorsequential mode and greater than 100,000 cd/m2 (30,000 fL) in monochrome mode, at LED power consumptions of 1.1 W and 3.3 W, respectively. The illumination optics employed a rectangular light pipe and tailored diffuser to efficiently fill the microdisplay panel aperture and exit pupil. The high efficiency of such image generators facilitates display readability in see-through HMDs operating in high-ambient-light environments, as well as enabling ultra-low power HMDs (less than 100 mW total) for dismounted users of battery-powered systems.

Paper Details

Date Published: 18 May 2006
PDF: 7 pages
Proc. SPIE 6224, Helmet- and Head-Mounted Displays XI: Technologies and Applications, 62240S (18 May 2006); doi: 10.1117/12.668481
Show Author Affiliations
Mark A. Handschy, Displaytech, Inc. (United States)
John R. McNeil, Displaytech, Inc. (United States)
Paul E. Weissman, Optical Resolutions, Inc. (United States)

Published in SPIE Proceedings Vol. 6224:
Helmet- and Head-Mounted Displays XI: Technologies and Applications
Randall W. Brown; Peter L. Marasco; Clarence E. Rash; Colin E. Reese, Editor(s)

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