DLP前投影系統之光路設計;Optical design of DLP front projection system

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题名:	DLP前投影系統之光路設計;Optical design of DLP front projection system
作者:	陳立人;Li-Jen Chen
贡献者:	光電科學研究所
关键词:	光展量;前投影系統;數位光源處理;照明系統;變焦鏡頭;projection lens;etendue;illumination system;DLP;Projection system
日期:	2008-01-11
上传时间:	2009-09-22 10:34:37 (UTC+8)
出版者:	國立中央大學圖書館
摘要:	在一般有關於投影系統的論文中，很少看到同時對照明系統及成像光學系統進行設計並探討，再由光學模擬軟體將它們結合，並進行模擬投影系統的光路分析與評價。因此，本論文將以非遠心式且offset的DLP前投影系統為對象，同時進行照明系統及成像光學系統(即鏡頭)之務實光學設計。在選定系統相關規格後，照明系統與鏡頭皆以少成本為主軸，使用越少的鏡片越好，因此，我的研究將從下列二個方向去發展： 1. 成像光學系統的變焦鏡頭：將設計二群6鏡片(全球面鏡)的非遠心變焦鏡頭為研究對象，並進行設計後之性能評價與公差分析。 2. 照明系統：選擇柯勒照明系統後，再利用光展量守恆原理，得到Rod的寬和高，使用前述資料，選定3片鏡片組(2球面鏡、1非球面鏡)為設計開端，於光學軟體(ZEMAX)進行設定與優化，將所得的結果，再結合燈源、UVIR Filter、色輪與Rod於光學模擬軟體上建立並做評價。然後選擇光閥offset且照明系統也offset的架構，將照明系統與鏡頭於光學模擬軟體(ASAP)上結合而完成此設計，觀察此系統模擬結果並做調整，於設計定案後進行實際之螢幕上效率估算，最後作一簡短的結論及說明可改善的方向。In general, a thesis topic of Projection System, it is very seldom to see an implementation study for Image Optical System and Non-Image Optical System simultaneously. I am using the Optical Software to generating a simulation test in terms of the performance result for study and analysis. First of all, the Non-Telecentric and offset front projection system was the main focus study in my dissertation. It includes the pragmatic optical design of Illumination system and Image Optical System. . To follow the trend of Cost Down, I have simplified the design with less lenses after the system specified. The Study was planned with two directions as below. 1. Projection Lens (Image Optical System): An application of two sets of six lenses (all spherical lenses) was using on the Non-Telecentric Front Projection. The evaluation was focus on the performance review and the tolerance limitation analysis. 2. Illuminative System (Non-Image Optical System): Follow with Kohler theory, with etendue and geometric optical formula we got a best size of ROD. A set of three pieces lens (2 spherical lenses and 1 aspheric lens) generated a best illuminative path through ZEMQX software. Then adding the Lamp, UVIR filter, Color Wheel and Rod as a complete illumination system. The performance result was evaluated with ASAP simulation software. Offsetting the light valve and illumination system were selected. The Projection Efficiency and Image Uniformity were evaluated on an Integration Projection System for the two tasks above. A summary with conclusion as follows.
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