Optical design of a Butterfly lens for a street light based on a double-cluster LED

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/103854

Title:	Optical design of a Butterfly lens for a street light based on a double-cluster LED
Authors:	孫慶成;Lo, Yi-Chien;Huang, Kuan-Teng;Lee, Xuan-Hao;Sun, Ching-Cherng
Contributors:	理學院光電科學與工程學系
Keywords:	Butterflies;Lenses;Light-emitting diodes;Mathematical models;Peanuts;Tilt;Utilization;Variability
Date:	2012-05-01
Issue Date:	2026-04-23 11:38:43 (UTC+8)
Publisher:	Elsevier Ltd.;Elsevier Ltd
Abstract:	摘要： We construct a precise optical model of the cluster LED and propose a design of a peanut form lens to achieve an optical utilization factor of 45% and uniformity of 1/2.7. Then we propose a new design of so-called Butterfly lens with unequal tilt design aimed to serve a double-cluster LED but with a tightened size. The optical utilization factor of the Butterfly lens is about 43.8%, the uniformity is around 1/2.7, and an averaged illuminance of 14lx, which could meet almost all types requested by IESNA. The design of the Butterfly lens is proven workable for a double-cluster LED. 出版者： Elsevier Ltd 出版日期： 2012-05 出處： Microelectronics and reliability, 2012-05, Vol.52 (5), p.889-893 資源來源： ScienceDirect - Freedom Collection 版權： 2011 Elsevier Ltd 識別號： ISSN: 0026-2714 識別號： DOI: 10.1016/j.microrel.2011.04.007
Appears in Collections:	[Department of Optics and Photonics] journal & Dissertation

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