%0 Journal Article %T Design a linear irregular Fresnel lens to thin an LED-based direct-type backlight module and improve the illuminance and uniformity of LCD panel %A Chen, Wen-Gong %J Proceedings of SPIE %V 8065 %N 1 %P 806504-806504-10 %@ 0277-786X %D 2011-04-13 %I SPIE %~ DeepDyve