採用非對稱式面積分割型均光系統與LED光源之DLP投影機;DLP projector with asymmetry light uniform system and LED light source

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/59172

Title:	採用非對稱式面積分割型均光系統與LED光源之DLP投影機;DLP projector with asymmetry light uniform system and LED light source
Authors:	洪維毅;Hung,Wei-Yi
Contributors:	光電科學與工程學系
Keywords:	光學不變量;光展量;均光系統;準直系統;視角分割;陣列透鏡;非對稱;面積分割;angle split;area split;asymmetry;collimating system;?tendue;lens array;light uniform system;optical invariant
Date:	2013-01-26
Issue Date:	2013-03-25 15:55:33 (UTC+8)
Publisher:	國立中央大學
Abstract:	本文提出在投影機的照明系統中採用陣列透鏡作為積分元件，並由發光二極體(Light Emitting Diode, LED)作為照明光源，利用將LED成像於陣列透鏡入光面的方式，使LED出光面與陣列透鏡入光面上的光形具有物像關係，利用陣列透鏡分割陣列透鏡入光面上的光形而形成多組新光源，最後利用無限共軛系統將多組光源重合於數位微型反射鏡元件(Digital Micromirror Device, DMD)照明區域，以此提升投影機照明系統之均勻度，稱為面積分割型均光系統。為了提升陣列透鏡的效率，我們可以進一步導入非對稱式設計於LED與陣列透鏡間的成像系統，使成像系統於水平與垂直方向具有不同的放大倍率，稱為非對稱式面積分割型均光系統。本文採用非對稱式面積分割型均光系統搭配數位光源處理技術(Digital Light processingTM, DLP)進行投影機光路設計，並且對此設計進行模擬驗證。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.
Appears in Collections:	[Graduate Institute of Optics and Photonics] Electronic Thesis & Dissertation

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