Design of LED Lens with Multi-surface Using the Method of Distributing the Bending Light Capacity
ZHOU Shikang
CHEN Chungen
Abstract：After the analysis of the advantages of multi-lenses system,a new design method of LED lens with double or multi freeform-surfaces called the method of distributing the bending light capacity is proposed.Starting from the known LED light intensity distribution and the requested illumination distribution,setting up the weight on the light bending capacity for every surface of the lens,the reverse calculation of the surfaces can be performed using light flux ray method and the shape of the lens with multifreeform-surfaces can be obtained in one-time.The overall shape of lens could be easily controlled by simply change the weights.This paper also gives a design result of double lens with four surfaces for the LED surgical lamp using our method as an instance.The method in this paper is simple and intuitive with extensive prospect of applications.
Keywords：multi-surfaceslight flux raysecondary optical designfree form surfaceLED
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 47-51 )