A projective LED low-beam headlamp of motorbikes

Peng Ge; Xiang Wang; Yang Li; Hong Wang

doi:10.1117/12.2073235

18 November 2014 A projective LED low-beam headlamp of motorbikes

Peng Ge, Xiang Wang, Yang Li, Hong Wang

Proceedings Volume 9298, International Symposium on Optoelectronic Technology and Application 2014: Imaging Spectroscopy; and Telescopes and Large Optics; 92981U (2014) https://doi.org/10.1117/12.2073235
Event: International Symposium on Optoelectronic Technology and Application 2014, 2014, Beijing, China

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.

Citation Download Citation

Peng Ge, Xiang Wang, Yang Li, and Hong Wang "A projective LED low-beam headlamp of motorbikes", Proc. SPIE 9298, International Symposium on Optoelectronic Technology and Application 2014: Imaging Spectroscopy; and Telescopes and Large Optics, 92981U (18 November 2014); https://doi.org/10.1117/12.2073235

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