A study on estimating discomfort glare caused by LED road lights

Author

Yihong Liu ; Yandan Lin ; Yaojie Sun ; Xiaoyan Zhu ; Jushui Lai ; Heynderickx, Ingrid

Author_Institution

Eng. Res. Center of Adv. Lighting Technol., Fudan Univ., Shanghai, China

fYear

2013

fDate

10-12 Nov. 2013

Firstpage

214

Lastpage

218

Abstract

In this study, the cause of discomfort glare from LED road lights was estimated by means of evaluating the effect of the variables: average glare source luminance, solid angle of the glare source, background luminance and the viewing angle between the glare source and the line of sight. With these 4 variables, 72 different lighting conditions were simulated in a scaled laboratory set-up. Participants were requested to judge the perceived discomfort glare of these lighting conditions using deBoer rating scale. All four variables and some of their interactions had indeed a significant effect on deBoer rating. As such, these results suggest general similarities in discomfort glare between LED and traditional light sources.

Keywords

brightness; light emitting diodes; light sources; street lighting; visual perception; LED road lights; average glare source luminance; background luminance; deBoer rating scale; discomfort glare; glare source solid angle; lighting condition; line of sight; scaled laboratory set-up; traditional light sources; viewing angle; Color; Light emitting diodes; Light sources; Lighting; Physiology; Solids; Visualization;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid State Lighting (ChinaSSL), 2013 10th China International Forum on

Conference_Location

Beijing

Print_ISBN

978-1-4799-2249-9

Type

conf

DOI

10.1109/SSLCHINA.2013.7177351

Filename

7177351