Optimization for Compact and High Output LED-Based Optical Wireless Power Transmission System

被引：13
|
作者：
Zhao, Mingzhi [1 ]
Miyamoto, Tomoyuki [1 ]
机构：
[1] Tokyo Inst Technol, FIRST, IIR, Midori Ku, R2-39 4259 Nagatsuta, Yokohama, Kanagawa 2268503, Japan
来源：
PHOTONICS | 2022年 / 9卷 / 01期
关键词：
optical wireless power transmission; LED; Fresnel lens; GaAs solar cell; long-distance power transmission; high power;
D O I：
10.3390/photonics9010014
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Optical wireless power transmission (OWPT) is a technology that supplies energy remotely. Due to the great advantages of long transmission distances, high directionality, no electromagnetic interference noise, and loose safety regulations, light emitting diode (LED) based OWPT systems become appropriate candidates for powering various applications, especially for the Internet of things (IoT). In this paper, improved LED-OWPT systems are proposed based on a collimation scheme for optimizing the system dimension and output. In a single LED configuration, the system dimension is compressed by 46% while the high transmission efficiency is maintained. As for the LED-array system, the dimension is compressed by 56%, and the output is enhanced by 40%. In the experiment, a high electricity output of 532 mW is achieved at 1 m transmission distance. In addition, the effect of misalignment between LED and lens and the potential of long-distance transmission are clarified in the LED-array OWPT system.
引用
收藏
页数：13
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