Free-form lenses for high illumination quality light-emitting diode MR16 lamps

Fei Chen; Sheng Liu; Kai WangZongyuan LiuXiaobing Luo

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Free-form lenses for high illumination quality light-emitting diode MR16 lamps

机译：Free-form lenses for high illumination quality light-emitting diode MR16 lamps

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摘要

Light-emitting diode (LED) MR16 lamps, regarded as one typical general lighting product of LEDs, are being widely used in many applications. Light efficiency into a main beam and uniformity are two key issues for high quality illumination of LED MR16 lamps. In this study, a practical and precise nonimaging optical design method is presented, and two novel 90- and 120-deg free-form lenses for high illumination quality LED MR16 lamps are designed according to this method. Based on the Monte-Carlo ray-tracing method, numerical simulation results demonstrate that the light output efficiencies of these novel lenses reach as high as 98percent and are 17percent higher than that of traditional total internal reflection (TIR) MR16 lens. Moreover, more than 89percent of light exiting from the surfaces of these novel lenses irradiate within the desired receive target, while only 60percent irradiate for traditional TIR lens. The uniformities of illuminance distribution across the target of these novel MR16 lamps also are much higher. In addition, these novel lenses are both quite compact and no more than 1/5 of that of the TIR lens. Therefore, these LED MR16 lamps integrated by novel lenses provide an effective solution to high quality illumination.

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来源
《Optical Engineering》 |2009年第12期|123002-1-123002-7|共7页
作者
Fei Chen; Sheng Liu; Kai WangZongyuan LiuXiaobing Luo;
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作者单位

National Laboratory for Optoelectronics Division of MOEMS and Huazhong University of Science and Technology, School of Optoelectronics Science and Engineering, Wuhan, 430074 China;

National Laboratory for Optoelectronics Division of MOEMS and Huazhong University of Science and Technology, Institute for Microsystems, School of Mechanical Engineering and School of Optoelectronics Science and Engineering Wuhan, 430074 China;

National Laboratory for Optoelectronics Division of MOEMS and Huazhong University of Science and Technology, Institute for Microsystems, School of Mechanical Engineering, Wuhan, 430074 ChinaNational Laboratory for Optoelectronics Division of MOEMS and Huazhong University of Science and Technology, School of Energy and Power Engineering, Wuhan, 430074 China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类计量学;
关键词
free-form lens; light-emitting diode; MR16;

Free-form lenses for high illumination quality light-emitting diode MR16 lamps

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