"Researchers at Sejong University have developed a new system to wirelessly transmit power over 30 meters using infrared light."
"Researchers Successfully demonstrated transmission of 400 mW light power, This power is enouf to charge sensors. "
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"The optical components of the laser cavity are not integrated into one device but are separated into a transmitter and receiver."
When both are in line of sight, a laser cavity is created between the transmitter and receiver over the air.
When a barrier cuts the transmitter-receiver line of sight, the system goes into power-safe mode and maintains a hazard-free power distribution in the air.
"The future aspect of this technology is to Power smartphones and e-vehicles"