DLP projector with asymmetry light uniform system and LED light source

• Main Authors: Wei-Yi Hung, 洪維毅
• Other Authors: Wen-Shing Sun
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/16992523947508565559

碩士 === 國立中央大學 === 光電科學與工程學系 === 101 === In this study, I introduce lens array as an integral device and LED as a light source in the illumination system of DLP projector. To build an imaging system which images the LED emitting surface to the input surface of lens array, so the light shape on the input surface of lens array must be the image of LED. Using lens array to split this light shape will bring numerous new light sources, then, we overlap them on the DMD plane of the projector by an infinite conjugate system. Finally, we complete an uniform illumination system of projector, it’s called light uniform system of area split. Furthermore, in order to enhance the efficiency of lens array, we may switch the imaging system between LED and lens array into the asymmetrical type, which make the image system with different maginfication in horizontal and vertical directions and it’s called asymmetry light uniform system of area split. A design of DLP projector with asymmetry light uniform system is presented and proved by simulations in this study.