Design of a bike headlamp based on a power white-light-emitting diode

Yi-Chien Lo; Cheng-Chien Chen; Hung-Yu Chou; Kai-Yu Yang; Ching-Cherng Sun

doi:10.1117/1.3615278

1 August 2011 Design of a bike headlamp based on a power white-light-emitting diode

Yi-Chien Lo, Cheng-Chien Chen, Hung-Yu Chou, Kai-Yu Yang, Ching-Cherng Sun

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Optical Engineering, Vol. 50, Issue 8, 080503 (August 2011). https://doi.org/10.1117/1.3615278

Abstract

In this letter, we present a new design for a light-emitting diode- based bike headlamp. The optical design contains two horizontal reflectors and a light pipe with two horizontal parallel mirrors. The designed illumination pattern in our simulations performs a contrast of 250 in the K-mark regulation, and it was measured to be 21 in the experiment with a not well-finished prototype, which was operated at 1 W. The contrast is higher than 5 as requested in the regulation.

©(2011) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Yi-Chien Lo, Cheng-Chien Chen, Hung-Yu Chou, Kai-Yu Yang, and Ching-Cherng Sun "Design of a bike headlamp based on a power white-light-emitting diode," Optical Engineering 50(8), 080503 (1 August 2011). https://doi.org/10.1117/1.3615278

Published: 1 August 2011

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