第二种可能性则能应用在更加耗电的设备上。其原理是发射一道精确聚焦的红外激光线，击中光伏电池，由此能够将光束转换回电能。
A second possibility, for more power-hungry devices, is to fire a finely focused infrared laser beam at a photovoltaic cell, which converts the beam back to electrical energy.
现今的互联网上，以光束形式在光纤中穿行的数据必须转换成电信号来处理。
In today's Internet, data traveling through optical fibers as beams of light have to be converted to electrical signals for processing.
配有红外线光束来转换频道，Google电视可以架设在您已有的设施上。
Equipped with an IR blaster to change channels, Google TV can sit on top of your existing infrastructure.
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