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Proceedings Paper

Random microstructure generation of different aspect-ratios and orientation for the optical design of LED edge-lit backlight using a generalized molecular dynamics force model
Author(s): Jee-Gong Chang; Chuan Chen; Yu-Bin Fang; Shin-Pon Ju
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Paper Abstract

This study proposes a generation scheme for the light guide of the edge-lit backlight using a microstructure with a pattern combining variable aspect ratio and a variable microstructure orientation, based on the molecular dynamics method of a generalized force model. This generation scheme is necessary to accommodate the need for the subsequent optical design phase, and allows for easier optical optimization for the microstructure distribution in order to reach the equal luminance condition. These needs are met by the cell division, which allows the adjustment of the microstructure density in each sub-domain, or cell. The boundary treatments allow the precise control of the microstructure density in each cell and the ability to smooth the microstructure distribution across the cell boundary. Finally, the performance of this generation scheme, as well as a practical example combining this scheme with the optical design, is shown and discussed.

Paper Details

Date Published: 2 September 2008
PDF: 12 pages
Proc. SPIE 7059, Nonimaging Optics and Efficient Illumination Systems V, 70590T (2 September 2008); doi: 10.1117/12.800609
Show Author Affiliations
Jee-Gong Chang, National Ctr. for High-Performance Computing (Taiwan)
Chuan Chen, National Cheng Kung Univ. (Taiwan)
Meiho Institute of Technology (Taiwan)
Yu-Bin Fang, National Ctr. for High-Performance Computing (Taiwan)
Shin-Pon Ju, National Sun-Yat-Sen Univ. (Taiwan)

Published in SPIE Proceedings Vol. 7059:
Nonimaging Optics and Efficient Illumination Systems V
Roland Winston; R. John Koshel, Editor(s)

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