Study on LED Cold Light Source Based on The Optical Fiber Coupling
Xu Pengfei
Liao Zhi
Zhao Guo
Yang Ping
Zhao Jianming
Abstract：This paper aims to solve the high power LED chip thermal dissipation which could lead to LED short life span, light failure and the contradiction between the heat dissipation and LED light source volume requirements.It analyzes the factors that affect the life span and light failure of the high power white LED , as well as the current LED packaging form and the advantages of fiber optic light .It proposes a LED cold light source based on optical fiber coupling .With the method of optical fiber coupling , the blue light transmits through the optical fiber to the other end , transforms into high brightness white light by passing through the euphotic layer containing phosphors .The segregation between LED chip and phosphor , can not only avoid LED light failure, low luminous efficiency and short life of the integration of the traditional LED caused by high temperature, but also greatly reduce the volume of the LED light source , which will prompt the development of LED to high power lighting field such as the car lighting .
Keywords：white LEDfiber coupledlumens depreciationhigh powerfailure
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 74-77 )