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 journalArticlepeer-review

11 Scopus citations


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 languageEnglish
Article number080503
JournalOptical Engineering
Issue number8
StatePublished - Aug 2011


  • Bike lamp
  • Light-emitting diode
  • Optical design


Dive into the research topics of 'Design of a bike headlamp based on a power white-light-emitting diode'. Together they form a unique fingerprint.

Cite this