Design of an efficient projector for LED flat lamp without light guide plate

An efficient LED projector is designed for the LED flat lamp without light guide plate （LGP）, in order to get high-efficiency lighting capablility and low cost of LED flat lamp. By employing refraction and total reflection, uni- form intensity distribution of the emergent light and high-efficiency l...

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Bibliographic Details
Published inOptoelectronics letters Vol. 9; no. 6; pp. 441 - 445
Main Author 赖丽萍 庄其仁 梁德娟
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.11.2013
Subjects
Lasers
LED
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
光学均匀性
导板
平板
投影机
灯
照明效率
设计
Panel Size
Uniform Illumination
Road Lighting
Optoelectronic Letter
Aperture Angle
Online AccessGet full text
ISSN1673-1905
1993-5013
DOI10.1007/s11801-013-3131-2

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Summary:An efficient LED projector is designed for the LED flat lamp without light guide plate （LGP）, in order to get high-efficiency lighting capablility and low cost of LED flat lamp. By employing refraction and total reflection, uni- form intensity distribution of the emergent light and high-efficiency lighting capablility are achieved. The simulation results show that the output efficiency and intensity distribution on LED flat lamp panel depend on the distance be- tween projector and output panel, the rotation angle of the projector and the gap between projector and LED. It per- forms well in both lighting efficiency and uniformity, while a distance of 5 mm, a rotation angle of 2° and a gap of 1.2 mm are used with the panel size of 240 mm×360 mm in the LED flat lamp without LGP. And 96.6% of optical uni- formity is achieved.
Bibliography:LAI Li-ping , ZHUANG Qi-ren, and LIANG De-juan （College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China）
An efficient LED projector is designed for the LED flat lamp without light guide plate （LGP）, in order to get high-efficiency lighting capablility and low cost of LED flat lamp. By employing refraction and total reflection, uni- form intensity distribution of the emergent light and high-efficiency lighting capablility are achieved. The simulation results show that the output efficiency and intensity distribution on LED flat lamp panel depend on the distance be- tween projector and output panel, the rotation angle of the projector and the gap between projector and LED. It per- forms well in both lighting efficiency and uniformity, while a distance of 5 mm, a rotation angle of 2° and a gap of 1.2 mm are used with the panel size of 240 mm×360 mm in the LED flat lamp without LGP. And 96.6% of optical uni- formity is achieved.
12-1370/TN
ISSN:1673-1905
1993-5013
DOI:10.1007/s11801-013-3131-2