Fast ray-tracing method for LCD backlight simulation using area ratio function

Won Yong Lee; Tong Kun Lim; Yun Woo Lee; In Won Lee

doi:10.1117/12.505364

12 November 2003 Fast ray-tracing method for LCD backlight simulation using area ratio function

Won Yong Lee, Tong Kun Lim, Yun Woo Lee, In Won Lee

Proceedings Volume 5186, Design of Efficient Illumination Systems; (2003) https://doi.org/10.1117/12.505364
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

The light guide plate in LCD backlight has a large number of surfaces that make patterns. They make simulation time long in the non-sequential Monte Carlo ray tracing simulation. We present an efficient way to handle the printed pattern in light guide plate; we used the area ratio function of pattern as a probability function of meeting at the pattern surface. This reduced the calculation loops of simulation,and made the great improvement of simulation speed.We developed a simulation tool to apply our new algorithm,and compared the simulation result of our approximate ray tracing method with that of real tracing,and also compared the simulation speed of ours with that of commercial one.

Citation Download Citation

Won Yong Lee, Tong Kun Lim, Yun Woo Lee, and In Won Lee "Fast ray-tracing method for LCD backlight simulation using area ratio function", Proc. SPIE 5186, Design of Efficient Illumination Systems, (12 November 2003); https://doi.org/10.1117/12.505364

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