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Proceedings Paper

A projective LED low-beam headlamp of motorbikes
Author(s): Peng Ge; Xiang Wang; Yang Li; Hong Wang
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Paper Abstract

In this paper we propose a projective LED low-beam headlamp of motorbikes. An ellipsoidal reflector is used to collect light emitting from the LED source. A baffle plate is located in the focal point of the ellipsoidal reflector to form the cut-off line.Then the light is redistributed by an optical lens. We set the measuring screen as an semi-circular zone and divide it into many small lattices, divide the spatial angle of the LED source into many parts and make relationships between them. According to the conservation of energy and Snell law, the lens is generated by freeform optics design method. Then the optical system is simulated by Monte Carlo method using ASAP software. Light pattern of simulation could meet the national standard. The low-beam headlamp is finally fabricated and assembled into a physical object. Experiment results can fully comply with regulations GB5948-1998.

Paper Details

Date Published: 18 November 2014
PDF: 7 pages
Proc. SPIE 9298, International Symposium on Optoelectronic Technology and Application 2014: Imaging Spectroscopy; and Telescopes and Large Optics, 92981U (18 November 2014); doi: 10.1117/12.2073235
Show Author Affiliations
Peng Ge, South China Univ. of Technology (China)
Xiang Wang, South China Univ. of Technology (China)
Yang Li, South China Univ. of Technology (China)
Hong Wang, South China Univ. of Technology (China)


Published in SPIE Proceedings Vol. 9298:
International Symposium on Optoelectronic Technology and Application 2014: Imaging Spectroscopy; and Telescopes and Large Optics
Jannick P. Rolland; Changxiang Yan; Dae Wook Kim; Wenli Ma; Ligong Zheng, Editor(s)

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