Long, Xingming; He, Jugang; Zhou, Jing; Fang, Liang; … - In: Renewable and Sustainable Energy Reviews 41 (2015) C, pp. 29-41
; and a conclusion is given finally. The results show that the LED headlamp is a complex electrical–optical–thermal–mechanical … system, involved human factors; currently it reaches the state-of-the-art on the efficiency, while the cost is about 350 …
