多主色顯示器之研製

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姓名

李家豪(Jia-Hao Li) 查詢紙本館藏

畢業系所

光電科學與工程學系

論文名稱

多主色顯示器之研製
(Establishment of Six-Primary Color Displays)

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摘要(中)

近年來影像重現平台快速發展，如液晶顯示器、液晶電視、液晶式投影機及DLP投影機等皆推陳出新，許多顯示器標榜廣色域為其主要特點，目前有許多多原色顯示器的文獻陸續發表，但是仍有許多問題尚未解決。本研究將提出一個新的多原色投影系統架構，使用兩台投影機，針對其中一台投影機光源更改其內部的雙色分光鏡，改變其三原色，與另外一台保持不變的投影機結合為一個新的六原色顯示器。對於雙色分光鏡的光譜選擇，本研究以等亮度色域邊界原理建立色域立體，評估色域立體的體積與亮度的優值函數，找出最佳的截止波長。過去在兩台投影機畫面對準上是使用梯形校正來對準，而本論文利用投影機的偏移量來對準投影畫面，取代過去使用梯型修正來對準畫面，畫面像素不會失真。過去的六原色顯示器因為增加濾光片來分色光卻產生亮度與對比度降低。本研究直接更改雙色分光鏡，不會降低亮度與對比度。除此之外，本研究使用反射鏡來轉折投影機光路，亦建立一個機構平台，使得調整投影畫面更精確。

摘要(英)

Recently, color reproduction stages are developed greatly, such as liquid-crystal displays, LCD TV, LCD projectors, DLP projectors, and etc. Wide-color-gamut displays are distinguishing feature of many display manufacturers. Many researches about multi-primary color displays are proposed, but there are still some problems which are not solved. This study proposed a novel multi-primary projection display system using two projectors. One of the two projectors is modified by changing two dichroic mirrors inside. The modified projector is combined with the other to a new six-primary color display. This study applies equal-luminance boundary theorem to construct gamut volume and evaluates the merit between gamut volume and brightness. By this method, the cut-off wavelength of dichroic mires can be found out. In the past, to align the images of the two projectors is pre-distored to compensate the trapezoidal distortion. This study proposes to eliminate trapezoidal distortion by using the offset of the projector. This study directly changes dichroic mirrors to maintain the brightness and contrast, and solves lower brightness and contrast resulted from adding filters before. Additionally, this study uses a reflection mirror to twist projection path and also constructs a stage to align projection images more accurately.

關鍵字(中)

★ 色域
★ 多主色顯示器
★ 多原色顯示器
★ 投影機

關鍵字(英)

★ color gamut
★ multi-primary display
★ projector

論文目次

摘要 I
ABSTRACT II
誌謝 III
目錄 IV
圖目錄 VIII
表目錄 XIV
第一章緒論 1
1-1 前言 1
1-2 目的 2
第二章多原色顯示器之沿革 4
2-1 文獻探討 4
2-1-1 全像光學元件搭配投影系統 4
2-1-2 LCOS投影機搭配濾光片 7
2-1-3 六原色液晶顯示器 8
2-1-4 DLP多原色顯示器 10
2-2 本研究對過去多原色顯示器的改進 11
第三章色彩學 13
3-1 人眼 13
3-2 XYZ三刺激值 14
3-3 色彩空間 16
3-3-1 CIE xy色度座標 16
3-3-2 CIE u'v'均勻色度座標 18
3-3-3 CIEL*a*b*均勻色彩空間 19
3-3-4 LCh色彩空間 20
3-4 色彩三屬性 21
3-5 標準RGB色彩空間 23
3-5-1 sRGB標準 24
3-5-2 NTSC標準 26
3-5-3 HDTV標準 26
3-5-4 xvYCC標準 28
3-5-5 Wide Gamut標準 30
3-5-6 各RGB標準比較 30
第四章多原色顯示器之設計 32
4-1 選用的投影機 32
4-2 投影機之投影畫面 33
4-3 兩台投影機畫面之疊合 34
4-4 機構設計 36
第五章多原色顯示器之色點選擇與優化 40
5-1 混色原理 40
5-2 建立色域立體 41
5-2-1 以顯示設備或影像量測資料建立色域 41
5-2-2 以虛擬方式建立的色點資料建立色域 42
5-2-3 以表面形狀函數建立色域 43
5-2-4 以等亮度色域邊界建立色域 43
5-3 色域體積之計算 47
5-4 色點選擇之模擬 48
5-5 TYPE I之模擬 56
5-5-1 有能量損失之模擬 56
5-5-2 無能量損失之模擬 71
5-5-3 小結 76
第六章多原色顯示器之成品 82
6-1 雙色分光鏡 82
6-2 機構平台與調校 85
6-3 六原色顯示器之色度 89
第七章結論與未來展望 95
7-1 結論 95
7-2 未來展望與發展 96
參考文獻 98

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指導教授

歐陽盟(Mang Ou-Yang)

審核日期

2007-10-9

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