以LED為光源的反射式液晶投影照明系統之設計與分析

Design and Analysis of Liquid Crystal on Silicon Based Projection Illumination System Using LED Light Source

許修真(Hsiu Chen Hsu)

指導教授 ： 張明文 博士 ； 劉宗平 博士

元智大學/工程學院/電機工程學系/碩士(2004年)

摘要

自從銦磷化鋁鎵(AlGaInP)和氮化銦鎵(InGaN)這兩種材料的開發，已在紅光到藍光所有可見光譜中，達到做出相對應高光效率的發光二極體。日本預估2010年白光LED的發光效率將會超過日光燈，屆時在照明市場之發展深具潛力。
在一般的投影系統中，光源通常是由燈泡與反射罩所組成；在此篇論文中，利用發光二極體(LED)取代一般投影系統中的燈泡與反射罩，並加以分析。本論文針對反射式液晶投影顯示器的照明系統作一完整的設計。首先，先利用光展量及幾何光學公式計算出照明系統的架構，並利用光學設計軟體ZEMAX來優化其照明系統。最後，將設計完成的系統建構於光學設計軟體TracePro。並對此模擬結果分析系統的均勻度，作一簡短的結論。

關鍵字

反射式液晶投影照明系統 ； LED光源 ； 光展量 ； 均勻度

並列摘要

Since the two kinds material of AlGaInP and InGaN were developed, the light-emitting diode (LED) of all visible spectral of red light to blue light has reached to relatively high illumination efficiency. Its illumination efficiency will be higher than fluorescent lamp until year 2010 as predicted by Japan. When the time comes, white-light LED will have potential in the lighting market.
The light source of the projector usual includes arc and reflector combination. In this thesis, we use light-emitting diode (LED) to replace arc and reflector and use analyze the optical properties of projection system. This thesis provides the complete procedures to design the illumination system of the liquid crystal on silicon projection display (LCOSPD). Firstly, etendue and geometric optical formula are utilized to get the basic structure of the illumination system, and then optical design software ZEMAX is utilized to optimize it. At last, the simulation of the system founded on the design is done by optical design software TracePro, and to the system uniformity is analyzed. Finally, a brief conclusion is summarized.

並列關鍵字

LCOS illumination system ； LED light source ； Etendue ； uniformity

參考文獻

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