Open AccessDesign of asymmetric freeform lens for low glared LED street light with total internal reflection
Author(s) -
Min-Feng Lai,
Yi-Chian Chen,
Nguyễn Đoàn Quốc Anh,
Tsai-Yu Chen,
HsinYi Ma,
Hsiao-Yi Lee
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.001409
Subject(s) - optics , lens (geology) , light emitting diode , light intensity , total internal reflection , led lamp , light guide , materials science , physics , light source
The study is focused on the asymmetric secondary freeform lens (ASFL) design for creating a low glared light-emitting diode (LED) street light. The lens is mounted on a chip on board (COB) LED as the new LED street light module to perform a non-axial symmetric light intensity distribution. The experimental results show that the street light can work without inclining lamps and reach Chinese National Standards (CNS) and Illuminating Engineering Society of North America (IESNA) standards at the same time.