微型投影機之LED光源設計

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姓名

黃山福(Shan-Fu Huang) 查詢紙本館藏

畢業系所

光機電工程研究所

論文名稱

微型投影機之LED光源設計
(Design of the LED light source for a mini-projector)

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摘要(中)

在本論文中設計一個可用於微型投影機的LED光源，用於投影機的光源必須為光線準直且均勻的照度，可投影到面板。所以在論文中主要利用兩種不同的LED光源作為設計模擬，一種為適用於封裝LED的封裝透鏡模組，另一種為利用沒有封裝的裸晶配合設計的平面反射鏡搭配透鏡以達到準直且均勻的目標。我們利用自建程式的方設計可用的透鏡規格後，將利用光機模擬軟體，進行驗證與優化。
在第一種光源模組下，當應用在單片式4:3的0.45吋液晶螢幕時，我們可得到84.6%的照度均勻性，發散角度半強角為9ﾟ及47%的使用效率。如果用在單片式4:3的0.62吋LCoS螢幕時，可得到85.8%的照度均勻性，發散角度半強角為10ﾟ及21.8%的使用效率。我們將此透鏡架構用於三片式液晶螢幕的系統時，會有88.5%的使用效率，5ﾟ的半強角度及30.5%使用效率。
我們利用第二種的光源模組改善當面板為LCoS時會使使用效率下降的問題，在第此種架構下，我們先以程式找出一個適當的透鏡規格後，再利用光機模擬軟體作實際光源模擬後作些微調整優化。所以在此架構下，我們可有效的將用於LCoS面板的光源使用效率提高到30%，均勻性亦可達到85%，發散角度半強角也降到了7ﾟ。

摘要(英)

We design a LED light source of a mini-projector and the light source must be a illumination uniform and collimator. In this paper we have two different ways to design the LED projector light source. The one is an enveloped type source; the other is a non-enveloped LED source. By the way we deign the lens with the computer program and use the optics soft ASAP to simulate. Then we confirmed the lens system and optimized.
When we use the enveloped type LED, have the 84.6% illumination uniformity、9ﾟfull angle at the half maximum of the luminous intensity and 47% power efficiency for 4:3 0.45” LCD panel. We have the 85.8% illumination uniformity、10ﾟfull angle at the half maximum of the luminous intensity and 21.8% power efficiency for 4:3 0.62” LCoS panel. The three LCD panel system we have 88.5% illumination uniformity、5ﾟfull angle at the half maximum of the luminous intensity and 30.5% power efficiency.
We use the nom-enveloped type LED with the lens we designed to increase the low power efficiency in LCoS panel. We find the lens data in a small range by the self-contributed computer program. By the lens data we increase the power efficiency to 30%、7ﾟfull angle at the half maximum of the luminous intensity and 85% illumination uniformity.

關鍵字(中)

★ 微型投影機
★ 發光二極體
★ 半強角度
★ 照度均勻性

關鍵字(英)

★ LED
★ illumination uniformity
★ mini-projector
★ power chip

論文目次

摘要 I
英文摘要 III
誌謝 IV
目錄 V
表目錄 VII
圖目錄 VIII
第 1 章緒論 1
1.1 研究背景 1
1.2 研究目的 3
1.3 文獻回顧 4
1.4 論文架構 8
第 2 章光學基本理論 9
2.1 光學基本理論 9
2.2 反射與折射 9
2.3 Fresnel Equations 10
2.4 光度量學 14
2.5 ynu光線追跡 16
第 3 章封裝之LED投影光源設計 19
3.1 使用封裝LED光源之微型投影機架構 19
3.2 封裝LED投影光源之模擬與討論 28
3.2.1 微型單片式LCD投影光源 28
3.2.2 微型單片式LCoS投影光源 36
3.2.3 三顆R、G、B LED混光的投影架構 39
3.3 重建習知技術與本論文作比較並且作公差分析 44
第 4 章平面反射鏡搭配透鏡之均勻準直光源 51
4.1 反射鏡搭配透鏡之準直均勻LED架構 51
4.2 反射鏡搭配透鏡之準直均勻LED光源模擬與討論 63
4.3 光源定位公差分析 67
第 5 章結論 70
參考文獻 71

參考文獻

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指導教授

陳奇夆(Chi-Feng Chen)

審核日期

2007-7-16

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