Share Email Print

Optical Engineering

Optical analysis of an 80-W light-emitting-diode street lamp
Author(s): Kai Wang; Xiaobing Luo; Xongyuan Liu; Bo Zhou; Zhiyin Gan; Sheng Liu
Format Member Price Non-Member Price
PDF $20.00 $25.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Optical analysis is critical to the evaluation of a light-emitting diode (LED) street lamp, especially when the lamp is still in its early stage of development and applications and when optimization is needed for making use of unique characteristics of LEDs. In this study, optical analysis of an 80-W LED street lamp was conducted. Experimental research on such a lamp was first undertaken. The results demonstrated that the average illumination was about 8.25 lx and the total uniformity was 0.364 for a 20-m-long and 10-m-wide test area at a height of 8 m, which is acceptable for the current standard for a submain road. Numerical simulation was also conducted; the feasibility of the numerical model was proven by comparison of the simulations with the experimental data, which will be used for future optimization study and other novel designs of the optical system of street lamps. Through the simulations and the corresponding analysis, it was found that the tested 80-W LED street lamp had reasonable performance in average illumination, but multiple shadows existed, which would need to be removed in future designs. Improvements are suggested to reduce the number of optical elements, to reduce the lamp's volume, and to enhance the illumination performance. Two design methods for LED street lamps are summarized, based on the optical analysis.

Paper Details

Date Published: 1 January 2008
PDF: 13 pages
Opt. Eng. 47(1) 013002 doi: 10.1117/1.2835010
Published in: Optical Engineering Volume 47, Issue 1
Show Author Affiliations
Kai Wang, Wuhan National Lab. for Optoelectronics (China)
Xiaobing Luo, Huazhong Univ. of Science and Technology (China)
Xongyuan Liu, Wuhan National Lab. for Optoelectronics (China)
Bo Zhou, Wuhan National Lab. for Optoelectronics (China)
Zhiyin Gan, Huazhong Univ. of Science and Technology (China)
Sheng Liu, Wuhan National Lab. for Optoelectronics (China)

© SPIE. Terms of Use
Back to Top