NDLI: Optical analysis of a 3W light-emitting diode (LED) MR16 lamp

Content Provider	IEEE Xplore Digital Library
Author	Kai Wang Sheng Liu Xiaobing Luo Zhongyuan Liu Fei Chen
Copyright Year	2008
Description	Author affiliation: Div. of MOEMS, Wuhan Nat. Lab. for Optoelectron., Wuhan (Kai Wang; Sheng Liu; Xiaobing Luo; Zhongyuan Liu; Fei Chen)
Abstract	Optical analysis is critical to the evaluation of an LED MR16 lamp, especially when the lamp is still in its early stage of development and applications and when optimization is needed for making use of unique characteristics of LEDs. In this study, optical research of a 3W LED MR16 lamp was conducted. The experimental results demonstrated that the LED MR16 lamppsilas angle of full width at half intensity was about 30 degrees and the luminous efficiency reached as high as 53.5 lm/W, which was accepted for the illumination requirements. Numerical simulation was also conducted. The feasibility of the numerical model was proven by comparison of the simulations with the experimental data. Through the simulation and the corresponding analysis, it was found that tested 3W LED MR16 had high optical efficiency (90.2%) into all angles, but had poor beam pattern design, especially for the low uniformity of the beam pattern and low optical efficiency of light into main beam (less than 60%). To improve the illumination performance, a modified non-imaging optical design method was suggested to enhance the uniformity of beam pattern, to enhance the optical efficiency into main beam and to reduce the optical system volume. A novel high power LED MR16 with high beam pattern uniformity and high optical efficiency was designed as an example.
Starting Page	1
Ending Page	5
File Size	400675
Page Count	5
File Format	PDF
ISBN	9781424427390
DOI	10.1109/ICEPT.2008.4607028
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-07-28
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Light emitting diodes Lenses Integrated optics Lighting Optical design Optical reflection Numerical models
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in