Ultrabright head-mounted displays using LED-illuminated LCOS

Mark A. Handschy; John R. McNeil; Paul E. Weissman

doi:10.1117/12.668481

18 May 2006 Ultrabright head-mounted displays using LED-illuminated LCOS

Mark A. Handschy, John R. McNeil, Paul E. Weissman

Proceedings Volume 6224, Helmet- and Head-Mounted Displays XI: Technologies and Applications; 62240S (2006) https://doi.org/10.1117/12.668481
Event: Defense and Security Symposium, 2006, Orlando (Kissimmee), Florida, United States

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.

Citation Download Citation

Mark A. Handschy, John R. McNeil, and Paul E. Weissman "Ultrabright head-mounted displays using LED-illuminated LCOS", Proc. SPIE 6224, Helmet- and Head-Mounted Displays XI: Technologies and Applications, 62240S (18 May 2006); https://doi.org/10.1117/12.668481

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