Title :
LED-Based Projection Systems
Author :
Yu, Xing-Jie ; Ho, Y.L. ; Tan, L. ; Huang, Ho-Chi ; Kwok, Hoi-Sing
Author_Institution :
Hong Kong Univ. of Sci. & Technol. Kowloon, Hong Kong
Abstract :
A novel design methodology for LED-array-based projection displays has been developed. By combining etendue limitation, system intensity, and efficiency requirements, a novel parameter space is proposed. Using this parameter space, LED lens-array and compound parabolic concentrator (CPC)-array illumination systems have been designed. A 1000-lm LED light source is built. Based on these lens-array and CPC-array illuminators, several LED-based liquid crystal on silicon (LCOS) projection systems are suggested. Among them, a one-panel LCOS projection system is proposed and tested. The method discussed here should be useful in the design of LED-array illumination systems for projectors in general.
Keywords :
LED displays; liquid crystal displays; LED lens-array; LED-array-based projection displays; LED-based liquid crystal on silicon; LED-based projection systems; compound parabolic concentrator; illumination systems; system intensity; Costs; Displays; Electrodes; High intensity discharge lamps; Light emitting diodes; Light sources; Lighting; Liquid crystal on silicon; Temperature; Xenon; LED arrays; projectors;
Journal_Title :
Display Technology, Journal of
DOI :
10.1109/JDT.2007.901560
