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

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

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

In this letter, we present a new design for a lightemitting 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.

Original language	English
Article number	080503
Journal	Optical Engineering
Volume	50
Issue number	8
DOIs	https://doi.org/10.1117/1.3615278
State	Published - Aug 2011

Keywords

Bike lamp
Light-emitting diode
Optical design

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10.1117/1.3615278

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title = "Design of a bike headlamp based on a power white-light-emitting diode",

abstract = "In this letter, we present a new design for a lightemitting 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.",

keywords = "Bike lamp, Light-emitting diode, Optical design",

author = "Lo, {Yi Chien} and Chen, {Cheng Chien} and Chou, {Hung Yu} and Yang, {Kai Yu} and Sun, {Ching Cherng}",

note = "Funding Information: The study was sponsored by the National Science Council of the Republic of China with Grant No. NSC100-3113-E-008-001.",

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AU - Lo, Yi Chien

AU - Chen, Cheng Chien

AU - Chou, Hung Yu

AU - Yang, Kai Yu

AU - Sun, Ching Cherng

N1 - Funding Information: The study was sponsored by the National Science Council of the Republic of China with Grant No. NSC100-3113-E-008-001.

PY - 2011/8

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N2 - In this letter, we present a new design for a lightemitting 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.

AB - In this letter, we present a new design for a lightemitting 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.

KW - Bike lamp

KW - Light-emitting diode

KW - Optical design

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

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Keywords

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