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Evaluation of discomfort glare from color leds and its correlation with individual variations in brightness sensitivity
Author(s) -
KimuraMinoda Takako,
Ayama Miyoshi
Publication year - 2011
Publication title -
color research and application
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 62
eISSN - 1520-6378
pISSN - 0361-2317
DOI - 10.1002/col.20630
Subject(s) - brightness , light emitting diode , photometry (optics) , glare , flicker , optics , sensitivity (control systems) , incandescent light bulb , light sensitivity , led lamp , optoelectronics , computer science , environmental science , materials science , computer vision , physics , engineering , computer graphics (images) , electronic engineering , stars , layer (electronics) , composite material
The light‐emitting diode (LED) has attracted attention as an alternative light source to fluorescent and incandescent lighting. The characteristics of LED light are different from other sources, but regulations for LED products have not been completely established. Common LED lights, such as automotive lamps, street lighting systems and traffic lights, are produced under the existing glare regulations for other light sources, and some organizations are seeking to establish standardized regulations for LED products. Glare can impair vision and cause discomfort and must be considered when establishing regulations for lights. In this study, we measured the sensitivity of observers to the discomfort glare from color LEDs and analyzed the correlation between discomfort glare sensitivity and brightness sensitivity using heterochromatic brightness matching and flicker photometry. The results indicate a correlation between discomfort glare sensitivity and brightness sensitivity using blue LEDs and mild correlations with green and red LEDs. © 2010 Wiley Periodicals, Inc. Col Res Appl, 2010.