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

被引：13

作者：

Lo, Yi-Chien ^{[1
]}

Chen, Cheng-Chien ^{[1
]}

Chou, Hung-Yu ^{[1
]}

Yang, Kai-Yu ^{[1
]}

Sun, Ching-Cherng ^{[1
]}

机构：

[1] Natl Cent Univ, Dept Opt & Photon, Chungli 320, Taiwan

来源：

OPTICAL ENGINEERING | 2011年 / 50卷 / 08期

关键词：

light-emitting diode; optical design; bike lamp; ILLUMINATION; LEDS; LENS;

D O I：

10.1117/1.3615278

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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. (C) 2011 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.3615278]

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