[[alternative]]UV-LED Light Source Module Design Based on Taguchi Method

碩士電機工程學系[[abstract]]本論文主要設計一個新型的光源模組，以改變紫外發光二極體（Ultra Violet Light-Emitting Diode, UV-LED）之朗伯（Lambertian）輻射分布，使其射出之光線可達到均勻分布。此光源模組包含一個UV-LED、一個透鏡及一個燈室。透過此一結構，UV-LED所產生的光線可以經由折射、反射以及全反射而使光線獲得較均勻的分布，進而提昇光源模組之均勻度（uniformity）。為了增加此模組的工作性能，本論文採用田口（Taguchi）式品質工程來探討此光源模組之關鍵品質特性，並利用特性要因分析手法結合現場的實務經驗找出5項可控因子，即透鏡孔徑、透鏡厚度、透鏡長和寬、LED 間距（pitch）與燈室高度，而後依據田口標準直交表選出L16(45)表，並結合田口式品質工程進行實驗。最後分析實驗結果所得之最適化條件，從中找出五個對於均勻度影響度最大的因子。透過田口法所設計之UV-LED光源模組，其輻射照度均勻度可達到90.70%，而發光效率為87.91%。[[abstract]]The thesis is mainly to design a novel light-source module to change the Lambertian-type radiation distribution of the ultra violet light emitting diode (UV-LED) into a uniform distribution. This light-source module consists of a UV-LED, a lens structure, and a lamp house so that a uniform distribution of light rays emitted from the UV-LED can be obtained via refraction, reflection, and total internal reflection. Therefore, the luminance uniformity of the light source module can be improved. For better performance of the proposed module, we precede an experiment based on a standard Taguchi L16(45) orthogonal array and Taguchi methods to get five factors, i.e., lens diameter, lens thickness, lens width and length, pitch of LED, and lamp house height, which influence the uniformity most. The luminance uniformity of the UV-LED light source module designed by the Taguchi method can achieve 90.70%, and the optical efficiency is 87.91%