Design and study of Fresnel lens for an antenna in indoor visible light communication system

被引：16
|
作者：
Li Xiang [1 ]
Lan Tian [1 ]
Wang Yun [1 ]
Wang Long-Hui [1 ]
机构：
[1] Beijing Inst Technol, Sch Optoelect, Beijing 100081, Peoples R China
来源：
ACTA PHYSICA SINICA | 2015年 / 64卷 / 02期
关键词：
visible light communication; antenna; Fresnel lens; equal-pitch;
D O I：
10.7498/aps.64.024201
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Indoor visible light communication is a novel wireless communication based on white LED technology. For its application needs, equal-pitch flat Fresnel lens is designed. Compared with traditional lens, Fresnel lens has several advantages including strong focus ability, short focal length, thin thickness, light weight, low cost, etc. The optical concentration ratio, the optical efficiency and the spot size of these Fresnel lenses are analyzed respectively with different parameters by means of Trace pro. Furthermore, the concentration performance is discussed at different incident angles. The results indicate that this kind of Fresnel lens could be used as an antenna of high-gain and small field, and the optical efficiency could be obtained to be 92.1%.
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页数：7
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