Tsuei Chih-Hsuan, Sun Wen-Shing, Kuo Chien-Cheng
Department of Optics and Photonics, National Central University, 32001 Chungli, Taiwan.
Opt Express. 2010 Nov 8;18 Suppl 4:A640-53. doi: 10.1364/OE.18.00A640.
A hybrid method for using sunlight and light-emitting diode (LED) illumination powered by renewable solar energy for indoor lighting is simulated and presented in this study. We can illuminate an indoor space and collect the solar energy using an optical switching system. When the system is turned off, the full spectrum of the sunlight is concentrated by a concentrator, to be absorbed by solar photovoltaic devices that provide the electricity to power the LEDs. When the system is turned on, the sunlight collected by the concentrator is split into visible and non-visible rays by a beam splitter. The visible rays pass through the light guide into a light box where it is mixed with LED light to ultimately provide uniform illumination by a diffuser. The non-visible rays are absorbed by the solar photovoltaic devices to provide electrical power for the LEDs. Simulation results show that the efficiency of the hybrid sunlight/LED illumination with the renewable solar energy saving design is better than that of LED and traditional lighting systems.
本研究模拟并展示了一种利用太阳能驱动的阳光和发光二极管（LED）照明的混合方法用于室内照明。我们可以使用光学开关系统照亮室内空间并收集太阳能。当系统关闭时，阳光的全光谱由聚光器汇聚，被太阳能光伏设备吸收，这些设备提供电力来驱动LED。当系统开启时，聚光器收集的阳光由分束器分成可见光和不可见光。可见光通过光导进入灯箱，在那里与LED光混合，最终由漫射器提供均匀照明。不可见光被太阳能光伏设备吸收，为LED提供电力。模拟结果表明，具有可再生太阳能节能设计的混合阳光/LED照明的效率优于LED和传统照明系统。
