Micro Structure Array Design and Analysis of High Efficiency Light Guide Plate

• Main Authors: HSIEH, HSIANG-HUI, 謝祥暉
• Other Authors: Chih-Yung Wen
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/32082902874927367671

碩士 === 大葉大學 === 機械工程研究所碩士在職專班 === 94 === The light rays emitted by LED travel inside the light guide plate, at any angle. Most light rays will travel back and forth until their energy decay if the two surface of the light guide are optic grade smooth. When the surface of the light guide plate is made with micro structures, the light rays are reflected and diffused and the total reflection is destroyed. The light guide plate can then direct the light rays in the desired direction. Currently the optical industry puts a lot of effort in designing and manufacturing high efficiency light guide plate. In this thesis, we analyzed the arrangement and geometry of micro structures of major light guide plate in the market. Commercial CAE software, Speos, was used to simulation results were compared with experiential observations. The analyses were used to help design new micro structure array is ten times that of current products and show very high efficiency. CAE is proven promising in the design of high efficiency light guide plate.