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

作者：Li Xiang; Lan Tian^*; Wang Yun; Wang Long Hui

来源：Acta Physica Sinica, 2015, 64(2): 024201.

DOI：10.7498/aps.64.024201

• visible light communication
• antenna
• Fresnel lens
• equal-pitch

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%.

• 出版日期2015-1-20
• 单位北京理工大学