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研究生:邱嘉豪
研究生(外文):Chia-hao Chiu
論文名稱:發光二極體色溫控制技術及其於色序式微型投影機之應用
論文名稱(外文):Color-Temperature Modulation of RGB LEDs and It’s Application of Color-Sequential Pico-Projectors
指導教授:孫文信伍茂仁
指導教授(外文):Wen -Shing SunMount-Learn Wu
學位類別:碩士
校院名稱:國立中央大學
系所名稱:光電科學研究所
學門:工程學門
學類:電資工程學類
論文出版年:2011
畢業學年度:99
語文別:中文
論文頁數:66
中文關鍵詞:色序式微型投影機色溫控制技術發光二極體
外文關鍵詞:white balancepico-projectorCIE 1931lumenspower consumptionRGB LED
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本論文使用色彩序列式光源,利用混色公式設計發光二極體的輸出色溫,在其他限制條件下,可以任意調製光源的消耗功率及輸出亮度。
在不同微型微影機的種類應用下,調製光源的重點會有所不同,例如微型投影機裝設在手機中的應用,設計重點在光源消耗之功率不影響手機本身之功能,本論文針對光源設計出低功率消耗模式,設計色溫目標在6500K,量測光源消耗功率為0.77 W,量測光源亮度為42.34 lm,量測色溫值在6530K。另外也對光源設計出高亮度模式,設計色溫目標在6500K,量測光源消耗功率2.53 W,量測光源亮度78.08 lm,量測色溫值在6700K,亮度的量測值和設計值的差距在5%之內,而色溫的量測值和設計值的差距在3%之內。在改良投影機的過程中,不可能一直使用現成光源模組,本實驗室會自行建立新的光源模組,重新排列光源位置,依然能使用相同的調製方式來設計色溫。
本論文建立出調製色溫之程式化平台,此平台可以設計的色溫範圍在4000K到25000K之間,簡化混色公式,使公式中眾多變數以驅動電流代替,不需要再量測驅動電流、亮度和色度座標多項變數,程式化也節省了混色公式在計算反矩陣時耗費的時間。
In this thesis, the modulations on LEDs driving current and duration ratio of RGB-LED-array as light source for pico-projector display were proposed. The light source that we use in this study is OSRAM LE ATB S2W.
We perform our light source in consideration of three orientations, power consumption, brightness, and color temperature. Two designs for different projection types, low power-consumption and high brightness, are proposed. Both types are designed to achieve color temperature of 6500K. For a low-power-consumption type, the light source is able to supply 47 lm with color temperature of 6530K at only 0.85-watt power consumption. For high-brightness type, 78.08 lm flux output with color temperature of 6700K is achieved at 2.53 W. Only 5 % difference in brightness and 3 % difference in color temperature between design and measurement.
Furthermore, we program a computation tool to simplify computations of prominent appropriate RGB duration ratio from inputting different objective color temperature and driving current of each LED. It also shows brightness and color space results.
目錄
摘要 Ⅰ
Abstract Ⅱ
致謝 Ⅲ
目錄 Ⅳ
圖目錄 Ⅵ
表目錄 Ⅷ
第一章 序論 1
1-1 前言 1
1-2 研究動機及目的 3
第二章 以色彩序列式調製光源之理論背景 10
2-1 色彩序列式控制光源之變因 10
2-2 混色原理 11
2-3 LCD面板在投影機上之種類 14
第三章 調變光源模組之色溫設計 17
3-1 發光二極體特性簡介及調光機制 17
3-1-1 發光二極體負載特性 17
3-1-2 以調製輸出色溫為目的之調控發光二極體亮度及功率計算 23
3-2 色溫之設計及目標 24
3-2-1 低功率消耗模式之設計理念及參數 26
3-2-2 高亮度模式之設計理念及參數 27
第四章 發光二極體輸出特性之量測 30
4-1 量測並驗證發光二極體亮度及色溫 30
4-2 0.21"微型投影機之色溫量測 34
4-2-1 0.21"微型投影機架構 34
4-2-2 發光二極體於非成像系統之色溫模擬量測 35
4-2-3 發光二極體於非成像系統之量測數據 36
第五章 設計程式化介面調製光源色溫 37
5-1 設計程式介面以調控發光二極體之輸出色溫 37
5-2 量測驅動電流和色度座標之關係 39
5-3 改良程式化介面以便利使用者設計光源之輸出色溫 45
第六章 結論與未來展望 47
6-1 結果與討論 47
6-2 未來與展望 49
參考文獻 53
[1] 潘光平,”液晶式投影機”,國立中央大學光電所,碩士論文。民國八十七年
[2] 張雪珍,”液晶投影顯示器中照明系統的照度量測與分析”,國立中央大學光電所,碩士論文。民國九十一年
[3] G. Harbers, W. Timmers and W. Sillevis-Smitt, “LED Backlight for LCD HDTV,” Journal of the Society forInformation Display 10, 347-350 (2004).
[4] G. Harbers, “High Performance LCD Backlighting using High Intensity Red, Green and Blue Lighting Emitting Diodes,” SID Symposium Digest of Technical Papers 32, 702-705 (2001).
[5] T. Uchida,K. Saitoh, T. Miyashita, and M. Suzuki, “Field Sequential full Color LCD without Color Filter for AM-LCD,” SID Symposium Digest of Technical Papers 97, 37-40 (1997).
[6] S. Muthu, F. Schuurmans, and M. Pashley, “Red, Green and Blue LED for White Light Illumination,” IEEE journal on Selected Topics in Quantum Electronics 8, 333-338 (2002)
[7] Harald Ries,” Mixing colored LED sources” Proc. of SPIE Vol. 5186 ,2003, p 27-32
[8] Harald Ries, Inex Leike, “Optimized Additive Mixing of Colored LED Sources,” Optical Engineering, Vol.43, NO.7, 1531- 1536 (2004).
[9] Shoji Tominaga,” A color control method for image output with projection displays” Proc. SPIE 6058, 60580I (2006).
[10] M. H.Keuper, G. Harbers, and S. Paolini, “RGB LED illuminator for pocket-sized projectors,” SID 03 Digest 35, 943-945 (2004).
[11] S. Muthu, F. J. Schuurmans, and M. D. Pashley, “Red, green and blue LED based white light generation: issues and control,” in Proc. IEEE IAS’02, 2002, pp. 327-333.
[12] Darmon, D., McNeil J. R., and Handschy M. A., "LED-Illuminated pico projector architectures," SID Symposium Digest 39, 1070-1073 (2008).
[13] J. S. Lin, H. C. Hsu, M. W. Chang, and C. P. Liu, “RGB LED Illuminator for LCoS panel Display,” SPIE Vol. 5942, 59420Y, (2005)
[14] Y.Martynov,H.Konijn,N.Pfeffer,S.Kuppens and W. Timmers "High-efficiency slim LED backlight system with mixing light guide", SID 03 Dig., p.1259.
[15] Duncan J.Anderson, “Uniform color illumination for scrolling color LCoS projection”, Proc. SPIE Vol. 4657, p. 46-53.
[16] Fan, Yi-Hua “Improvement and Optimal Design of RGB LED Backlight Unit Using a Genetic Algorithm”, Proceedings of the SPIE, Volume 7787, pp. 77870I-77870I-8 (2010).
[17] Robert Scott West, “High Brightness Direct LED Backlight for LCD-TV”, Lumileds Lighting, 20000 Victor Parkway Suite 100 Livonia, Michigan, USA, 2003.
[18] Ohno, Y,” Color Issues of White LEDs”, Optoelectronics Industry Development Association. Report.
[19] G. Harbers, M.Keuper, S. Paolini: Performance of High Power LED
Illuminators in Color Sequential Projection Displays, Proc IDW 03.
[20] Huifang Gao, “Simple color sequential LCoS illumination system used for projection display” ,: SPIE, Volume 7749, pp. 774926-774926-9 (2010).
[21] S. Roelandt, “Color uniformity in compact LED illumination for DMD projectors” Proc. SPIE, Vol 7723, pp. 32767, April 2010.
[22] Wyszecki, G. and Stiles, “Color Science: concepts and methods, quantitative data and formulae. “ , Wiley,New York (1982)..
[23] 林維屏”LED光源新式應用之研究”國立中央大學光電所,碩士論文。民國九十五年.
[24] http://www.osram.com.
[25] 陳榮裕, “底座溫度與驅動電流對高功率LED特性影響之研究”, 成功大學碩士論文..
[26] 李漫鐵, “LED 全彩顯示屏配光解決方案.” 深圳雷曼光電有限公司
[27] Bill Phillips, Jennifer Grace, Zhisheng Yun, Homogenized ,”A High Efficiency Mobile Projection Engine Utilizing Color Sequential Illumination”, SID 09 Dig.
[28] E. Fred Schubert,「Light – Emitting Diodes」.Cambridge, U.K:Cambridge Univ. Press, (2006).
[29] M. D. B. Charlton, M. E. Zoorob, and T. Lee,“Photonic Quasi-Crystal LEDs Design, modeling, and optimization.” Proc. SPIE 6486, 64860R-1-64860E-10 (2007).
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