A compact bike head lamp design based on a white LED operated at one watt

Yi Chien Lo, Jhih You Cai, Chin Wei Chen, Ching Cherng Sun

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

A design of a compact bike head lamp meeting the K mark regulation based on a white LED by Cree XP-C is presented. The proposed design contains three parts, one is a parabolic mirror, another is a flat mirror and the other is a lens. The design performed a contrast of 66.7 across the cut-off line by the K-mark regulation, and a prototype fabricated by a simple CNC machining was measured a contrast of 12.4 across the cut-off line. The successful design requests the LED operated at only 1 W, and it enables an user to operate the lamp longer with energy saving.

Original languageEnglish
Pages (from-to)1172-1175
Number of pages4
JournalOptics and Laser Technology
Volume44
Issue number4
DOIs
StatePublished - Jun 2012

Keywords

  • Bike head lamp
  • Light emitting diode
  • Optical design

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