Design Method of Automotive LED Widen Pattern Lens Based on Luminous Energy Rate
Li Lifu
Deng Xingchen
Abstract：In order to improve the luminous energy rate of widen pattern system in the automotive LED headlamp , the paper puts forward widen pattern lens design method that combines internal and the appearance surface of the lens based on the theory of non-imaging optics . Among them , the internal surface of lens is designed base on the theory total internal reflection , which is used to collect the energy of light.The appearance surface of lens is designed base on the theory of illumination energy mapping , which is used to distribute the energy of light .A simulation is made to verify the feasibility of this design method . The results indicated that the designed lens not only provide widen illumination pattern but also possess a luminous energy rate increment of 35%, compared with the flat convex lens .Finally, the results of the exprement indicate that the illumination which the lens produces conforms to requirement of the widen illumination pattern on geometry and illumination .
Keywords：optical designLEDilluminationwiden lighting patterns
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 86-90 )