Optimize pattern design for the thin LGP

We investigated the optimized condition of LGP pattern design. For the purpose, we applied the pattern density function with simple exponential function. We analyzed coefficients of the pattern density function as the LGP thickness from 0.7 mm to 0.3 mm. And also we adopted a sinusoidal function to solve the hot spot of the LED. (C) 2012 Elsevier GmbH. All rights reserved.