本文之研究目的為探討以脈波驅動發光二極體，利用人眼視覺暫留現象之特徵以找出提升發光效能、減少功率損耗之最佳化脈波參數。
本研究是以改變不同之輸入功率、驅動頻率及負載週期等控制參數驅動發光二極體，先以感光二極體進行發光強度之實驗與測試，再以人眼進行實際觀察驗證。在實驗與測試過程中，藉由系統之數學模型建構與驗證，以簡化全參數測試過程、提升實驗效率，並藉由建立最佳化參數設定流程與發光效率試算公式，提供快速設定最佳化參數之方法。最後證實，以脈波驅動發光二極體之最佳化控制參數及輸入條件，是為以最大工作額定電流，並依實際使用之最小亮度需求及最大功率限制下，以最小之負載週期作為驅動條件設定。實驗結果證明，利用人眼視覺暫留現象以脈波驅動發光二極體，確實可以提升發光效能以達到減少功率損耗之目的。

This thesis investigates how to utilize persistence of vision in combination with pulsing power drive to improve the efficiency of light emitter diode (LED) by experimental as well as analytical approaches.

A series of experiments are first carried out to characterize the performances of LED and photodiode with various power input, frequency and duty cycle, followed by a comparison of photodiode and human eye observation. By analyzing the nonlinear response of system components and links between them, an analytical model is established and optimal pulsing parameters can be obtained. It is suggested that the optimal condition to efficiently drive a LED is to use maximum recommended operation current with minimum duty cycle while meeting the requirement of maximum intensity and minimum power requirement. From this study, it is concluded that pulsing power drive can substantially lower input power and improve the LED lighting efficiency.

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