在某些照明應用中,由於受到外力的撞擊或損壞,或空間有限,要從一個電器的節點把光原移動到另外一個環境的電器接點是不可取的.針對以上所述需要,照明系統已經開發出利用導光管的概念,將光源從這個地方傳導到我們所需要照明的地方.本論文所提出之路燈照明方法,其目的在於減少人力資源登高更換燈源以及降低危險,和解決散熱問題.另一方面,如果其中一顆燈源壞掉,剩下的燈源將繼續運作,做為一個相互備份的系統.
在本研究中,首先對於LED應用在道路照明的系統進行光學分析,然後,其次是進行模擬結果與法規驗證.其結果顯示,一8米道路未設計範例,平均照度高達21 lux,照度均勻度為 0.58 lux, 平均亮度為 1.3 lux 等皆可符合 CJJ 45-2006 次幹道路照明規範.透過模擬與各項光學分析,發現本論文所提出之結合發光二極體與光纖之路燈照明應用,驗證了法規與平均亮度是可取的.利用光纖為導光管的設計概念,能夠使LED在道路照明應用上更為廣泛和靈活,以及提高整個照明系統的光學特性和散熱環境.

In certain applications, however, it may be advantageous to remove the light source from an environment where electrical contacts are undesirable, that is subject to physical shock or damage, or where space is limited. In response to such needs, illumination systems have been developed that use light guides to guide the light from the light source to a desired illumination point.This proposed street lamp is not only intended to reduce the human resources and climbing high to replace the light source but also provide a better heat-dissipation and safety environment. On the other hand, if one LED is fails, the remaining light sources will continue to operate as a mutual backup systems.In this study, optical analysis of designing roadway lighting system with LEDs were conducted. Simulation results on such street lamp was first undertaken. The results demonstrated that the average illumination was about 21 lx and the total uniformity was 0.58 lx for 25 m long and 8 m wide test area at height of 8 m, which is acceptable for the current standard for a sub main road. Through the simulations and the corresponding analysis, it was found that on designing roadway lighting system with LEDs light source directed through optical fibers had reasonable performance in average illumination.Using the optical fibers as a light guide concept design can make LED street lamp more flexible in installation and maintenance. It can also enhance the optical and thermal performance of the whole LED street lamp in lighting system.

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