Abstract
Due to rapid progress in LED (Light Emitting Diode) technology, LEDs have become increasingly prevalent in applications to automotive lighting. This paper studies recent trends of LED headlamps along with various experiments regarding photometric characteristics, glare, and visibility. Experimental results are compared to those of halogen and HID (high intensity discharge) headlamps. LED headlamps are found to be still inferior to conventional headlamps with respect to glare. However, many properties of LED headlamps (luminous intensity, beam width, energy efficiency, and design) are competitive with halogen and HID headlamps. The findings in this investigation will henceforth be reported to the Korean Motor Vehicle Safety Standard (KMVSS).
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References
Apfelbeck, R. (2007). Advanced optical and thermal solutions for LED headlamp. SAE Paper No. 2007-01-0872.
Boyce, P. R. (2003). Human Factors in Lighting. 2nd edn. Taylor & Francis. London and New York.
Bullough, J. D., Van Derlofske, J., Dee, P., Chen, J. and Akashi, Y. (2003). Impact of headlight glare on peripheral visibility. Progress in Automobile Lighting 5th Int. Symp., 166–180.
Dubosc, C. (2005). Compared future styling trends for lighting systems on major markets. 6th Int. Symp. Automotive Lighting. 239–249.
Flannagan, M. J., Sivak, M. and Gellatly, A. W. (1990). Rearward Vision, Driver Confidence, and Discomfort Glare using an Electrochromic Rearview Mirror. UMTRI-90-27. Transportation Research Institute. University of Michigan. Ann Arbor.
Hamm, M. (2005). LED revolution in headlamp optics, mechanics, thermomanagement and styling. 6th Int. Symp. Automotive Lighting, 128–145.
Kang, B., Park, K. and Son, S. (2006). A evaluation on LHPS cooling performance of LED headlamp. Spring Conf. Proc., Korean Society of Automotive Engineers, 563–567.
Kang, B., Park, K., Yong, B. and Kim, H. (2007). Application of LED Headlamps in S. Korea. SAE Paper No. 2007-01-3516.
Kang, B., Park, K., Yong, B., Lee, H. and Kim, H. (2008). The evaluation of performance on LED headlamps. Fall Conf. Proc., Korean Society of Automotive Engineers, 2078–2083.
Neumann, R., Dobrus, V., Popelek, J., Sayers, E. M. and Kubena, V. (2007). High efficient LED headlamp design — Styling versus light performance. SAE Paper No. 2007-01-0874.
Scholl, M. (2005). Global headlamp application with dual filament bulbs. 6th Int. Symp. Automotive Lighting. 618–630.
Schieber, F. (1998). Analytic Study of Daytime Running Lights as Potential Sources of Disability and Discomfort Glare under Ambient Illumination Conditions Ranging from Dawn through Dusk. Heimstra Human Factors Laboratories. University of South Dakota. Vermillion. SD 57069.
Schmidt-Clausen, H. J. and Bindels, J. Th. H. (1974). Assessment of discomfort glare in mirror vehicle lighting. Lighting Research and Technology 6,2, 79–88.
Sivak, M., Schoettle, B., Minoda, T. and Flannagan, M. (2005). Blue Content of LED Headlamps and Discomfort Glare. UMTRI-2005-2. Transportation Research Institute. University of Michigan. Ann Arbor.
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Kang, B., Yong, B. & Park, K. Performance evaluations of LED headlamps. Int.J Automot. Technol. 11, 737–742 (2010). https://doi.org/10.1007/s12239-010-0087-0
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DOI: https://doi.org/10.1007/s12239-010-0087-0