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Proceedings Paper

LED projection displays
Author(s): Won Yong Lee; Young Chol Lee; Kirill Sokolov; Hee Joong Lee; Il Moon
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Paper Abstract

In this paper a new illumination system with high power light emitting diode (LED) sources for projection displays is proposed. The prototype of a rear projection system has been developed by using red, green and blue (RGB) LEDs and three LCD panels. Four LEDs were used for each primary color. Parabola reflectors were used for collimating the LED lights and a new array style of LEDs and collimators were used. Integration rods were directly used between collimators and LCD panels without relay lens for uniform light distribution. A 40" projection display system was made with a light output about 25 lm on the screen and the projection engine was very small comparing to the original engine which uses an arc source.

Paper Details

Date Published: 29 September 2004
PDF: 7 pages
Proc. SPIE 5529, Nonimaging Optics and Efficient Illumination Systems, (29 September 2004); doi: 10.1117/12.559231
Show Author Affiliations
Won Yong Lee, Samsung Electronics Co., Ltd. (South Korea)
Young Chol Lee, Samsung Electronics Co., Ltd. (South Korea)
Kirill Sokolov, Samsung Electronics Co., Ltd. (South Korea)
Hee Joong Lee, Samsung Electronics Co., Ltd. (South Korea)
Il Moon, Samsung Electronics Co., Ltd. (South Korea)


Published in SPIE Proceedings Vol. 5529:
Nonimaging Optics and Efficient Illumination Systems
Roland Winston; R. John Koshel, Editor(s)

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