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Luminance versus Luminous Intensity as a Metric for Discomfort Glare
Technical Paper
2011-01-0111
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Photometric performance specifications for vehicle headlamp specifications in North America are given in terms of luminous intensity values at various angular locations with the objective of providing sufficient illumination for forward visibility while controlling for glare toward oncoming and preceding vehicle drivers. Abundant evidence suggests that luminous intensity is an appropriate metric for characterizing the degree to which a headlamp can produce disability glare through veiling luminances under a wide range of viewing conditions. Notwithstanding that discomfort glare exhibits a differential spectral sensitivity from the photopic luminous efficiency function used to characterize light, luminous intensity does not always predict discomfort glare. For example, the luminance of the luminous element(s) can be more predictive of discomfort when headlamps are viewed from relative close distances. Since technologies such as light-emitting diodes might utilize arrays of small, high-luminance sources to generate a headlamp distribution, such headlamps might produce different levels of discomfort glare than conventional headlamp optics. The present paper describes an experiment to study this effect and to explore concepts for mitigating discomfort glare when high-luminance source arrays are used.
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Citation
Bullough, J., "Luminance versus Luminous Intensity as a Metric for Discomfort Glare," SAE Technical Paper 2011-01-0111, 2011, https://doi.org/10.4271/2011-01-0111.Also In
Automotive Lighting Technology and Human Factors in Driver Vision and Lighting, 2011
Number: SP-2300; Published: 2011-04-12
Number: SP-2300; Published: 2011-04-12
References
- “SAE Ground Vehicle Lighting Standards Manual,” SAE International Warrendale, PA 2002
- Bullough, J. D. Van Derlofske, J. Dee, P. Chen, J. Akashi, Y. “ An Investigation of Headlamp Glare: Intensity, Spectrum and Size ,” National Highway Traffic Safety Administration Washington, D.C. 2003
- Schmidt-Clausen, H. J. Bindels, J. T. H. “Assessment of Discomfort Glare in Motor Vehicle Lighting,” Lighting Res. Technol. 6 2 79 88 1974
- Flannagan, M. J. “ Subjective and Objective Aspects of Headlamp Glare: Effects of Size and Spectral Power Distribution ,” Report UMTRI-99-36 University of Michigan Ann Arbor, Michigan 1999
- Sivak, M. Simmons, C. J. Flannagan, M. J. “Effect of Headlamp Area on Discomfort Glare,” Lighting Res. Technol. 22 1 49 52 1990
- Alferdinck, J. W. A. M. Varkevisser, J. “ Discomfort Glare From D1 Headlamps of Different Size ,” Report IZF 1991 C-21 TNO Institute for Perception Soesterberg, Netherlands 1991
- Rosenhahn, E.-O. Lampen, M. “New Investigation of the Subjective Glare Effect of Projection Type Headlamps,” SAE Technical Paper 2004-01-1281 2004 10.4271/2004-01-1281
- Bullough, J. D. Brons, J. A. Qi, R. Rea, M. S. “Predicting Discomfort Glare from Outdoor Lighting Installations,” Lighting Res. Technol. 40 3 225 242 2008
- De Boer, J. B. “ Public Lighting ,” Philips Technical Library Eindhoven, Netherlands 1967
- Brons, J. A. Bullough, J. D. Rea, M. S. “Outdoor Site-Lighting Performance: A Comprehensive and Quantitative Framework for Assessing Light Pollution,” Lighting Res. Technol. 40 3 201 224 2008
- Sheskin, D. J. “ Handbook of Parametric and Nonparametric Statistical Procedures ,” CRC Press New York City, New York 1997
- Akashi, Y. Myer, M. A. Boyce, P. R. “Identifying Sparkle,” Lighting Res. Technol. 38 4 325 337 2006
- Bullough, J.D. Van Derlofske, J. “Methods for Assessing the Impact of Oncoming Glare on Driving Behavior,” SAE Technical Paper 2005-01-0442 2005 10.4271/2005-01-0442
- Bullough, J.D. Pysar, R.M. Skinner, N.P. “Real World Measurement of Headlamp Illumination,” SAE Technical Paper 2010-01-0294 2010 10.4271/2010-01-0294