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Optical Engineering • Open Access

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

Paper 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.

Paper Details

Date Published: 1 August 2011
PDF: 3 pages
Opt. Eng. 50(8) 080503 doi: 10.1117/1.3615278
Published in: Optical Engineering Volume 50, Issue 8
Show Author Affiliations
Yi-Chien Lo, National Central Univ. (Taiwan)
Cheng-Chien Chen, National Central Univ. (Taiwan)
Hung-Yu Chou, National Central Univ. (Taiwan)
Kai-Yu Yang, National Central Univ. (Taiwan)
Ching-Cherng Sun, National Central Univ. (Taiwan)

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