期刊
ACTA PHYSICA SINICA
卷 64, 期 2, 页码 -出版社
CHINESE PHYSICAL SOC
DOI: 10.7498/aps.64.024201
关键词
visible light communication; antenna; Fresnel lens; equal-pitch
资金
- National Basic Research Program of China [2013CB329202]
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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