Flicker-glare and visual-comfort assessments of light emitting diode billboards

Meng Wei Lin, Pin Hsuan Hsieh, Erik C. Chang, Yi Chun Chen

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


This study investigated the discomfort glare produced by the high-brightness LED billboards in relation to four factors: flicker frequency, panel luminance, viewing angular sub-tense, and ambient illuminance. The results showed that visual comfort is not affected by ambient illuminance but by the other three factors. Also, interaction was found between luminance and viewing angle. The experimental data were curve fitted to construct visual comfort models of LED billboard displays. By modulating the operating conditions, comfort display with LED billboards can be achieved.

Original languageEnglish
Pages (from-to)E61-E68
JournalApplied Optics
Issue number22
StatePublished - 1 Aug 2014


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