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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/7135


    Title: 投影機微鏡面矩陣對信號灰階強度的影響;Digital micromirror device to variety of gray level signal influence
    Authors: 林俊宏;Chun-Hung Lin
    Contributors: 光電科學研究所碩士在職專班
    Keywords: 投影機;DMD;DLP
    Date: 2004-06-02
    Issue Date: 2009-09-22 10:50:20 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 微鏡面矩陣面板是靠著時間分割原理,經由影像處理器處理不同時間所接受到的單色灰階信號顯示在面板上再配合光學系統將彩色的影像投射出來。一個完整的投影系統所呈現在螢幕上的畫面,會因為不同的輸入信號而產生不同程度的干擾而形成影像瑕疵;為了瞭解信號對於微鏡面板瑕疵的關係,在實驗中利用灰階信號輸入到系統中,使用亮度計所測得的結果進一步探討影像瑕疵的原因,實驗中也使用電子顯微鏡直接觀察顯示面板本身在未經過光學系統所呈現的影像,將更能了解此系統的限制與特性。 Digital micro-mirror device (DMD), a spatial light modulator developed by Texas Instruments, was investigated. By using pulse width modulation to control the amount of time each mirror reflects the light, the projected image is created. The image performance of the projector is found surprisingly poor, with a signal of gray range of the color region noticeably smaller then that of a CRT monitor using standardized phosphors. It results flicker and contour discontinuous artifact defects. It use lumen meter to measure the projection system output light intensity by a variety of signal levels and specially to setup microscope of charge-coupled device (CCD) for observation direction to further analyses.
    Appears in Collections:[光電科學研究所碩士在職專班 ] 博碩士論文

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