我們提出一個新穎式車前燈設計應用於高效率LED導光管系統，在該系統中，光源處一共用了四顆TIR Lens(一顆TIR Lens內含4顆LEDS)，其中LED選擇Lumileds-K2(5W 120lm)，而後由LEDS所射出的光束藉由TIR Lens匯聚使成準直光 後，再由Prism Splitter(分光器)將光束分成兩道光束，再由各自所對應的導光管將光束引導至各自對應的新穎式車前燈進行放光。該系統的特色為:(1)由於光源單一模組化，不會再有車輛的車燈一邊亮而另一邊不亮的情況，如此可降低行駛的危險性，此外在維修方面也較為便易。(2)光源置放於車輛引擎外處，可使LED散熱的問題被解決。最後透過光學軟體FRED來進行模擬和驗證該車燈系統符合歐洲法規ECE。該新穎式車燈系統的光利用效率為40.2% (一般車前燈的光利用效率為40%)。

We propose an innovative vehicle headlight design based on high efficiency LED light pipe system. In this system, light rays are emitted from multiple high-power LEDs within the Total Internal Reflection (TIR) lenses. After TIR Lens, the beam will be divided into two beams by the prism splitter and guided to their respective headlamps with corresponding light pipes. This proposed system is intended to use few LEDs to supply enough luminous and can reduce the quantity of TIR lens. Detailed geometric analysis of the system is given, and the simulation results show that the headlamp can produce a legal Economic Commission for Europe (ECE) low-beam pattern with a total optical efficiency up to 40.2% with four LEDs (Lumileds-K2, 5W 120lm) as a source.

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