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http://dx.doi.org/10.4313/JKEM.2012.25.9.743

Design and Fabrication of LED Navigation Lights  

Kim, Il-Kwon (Electric and Electronic Research Division, Korea Marine Equipment Research Institute)
Kim, Dong-Geon (Division of Electrical and Electronics Engineering, Korea Maritime University)
Kil, Gyung-Suk (Division of Electrical and Electronics Engineering, Korea Maritime University)
Cho, Heung-Gi (Defense Agency for Technology and Quality Busan Center)
Cho, Kyu-Lyong (Defense Agency for Technology and Quality Busan Center)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.25, no.9, 2012 , pp. 743-749 More about this Journal
Abstract
In this paper, we designed and fabricated LED navigation lights which can replace the existing ones immediately and overcome disadvantages due to use of conventional lamps. To decide the best arrangement and position of a LED module, optical systems of existing navigation lights were analyzed and refracted routes of rays were simulated. The electrical and optical characteristics of the fabricated LED navigation lights were measured and analyzed with a goniophotometer. To calculate ranges of visibility, the vertical and horizontal luminous intensity distributions were evaluated in accordance with the COLREGs (convention on the international regulation for preventing collisions at Sea). From the results, the proposed LED navigation lights showed suitable characteristics for marine environment with the power consumption reduced by 90% and the maximum luminous intensity increased by 20% compared to the existing navigation lights.
Keywords
LED; Navigation lights; COLREGs; Fresnel lens; Masthead light; Side light; Towing light;
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