Using a laser to wirelessly charge a phone significantly across a room

according to But engineers at the University of Washington have for the premier time developed a way to significantly charge a phone wirelessly Utilizing a laser. To accomplish this, the team mounted a thin power cell to the back of a smartphone, that charges the phone Utilizing power from the laser. Custom 3-D printed "retroreflectors" placed around the power cell on the phone reflect the guard beams back to photodiodes on the laser emitter. These are inaudible to our ears, however sensitive sufficient for small microphones on the laser emitter to pick up. These strips act as a heatsink, dissipating excess heat from the charging beam and allowing the laser to charge the phone for hours.

Laser used to wirelessly charge a smartphone

By with Tim Sandle four hours ago in Science Washington - Physicists have used a laser to wirelessly charge a smartphone. The laser used for the charging is normally colorless; however, for demonstration purposes the investigators used red beams. The study has been The engineering feat, from the University of Washington, represents the fist time a way has been developed to significantly charge a phone wirelessly Utilizing a laser. "The laser used for the charging is normally colorless; however, for demonstration purposes the investigators used red beams. More about Smartphone, Laser, Wireless, Charger further break news from phone Laser Wireless Charger

Using a laser to wirelessly charge a phone significantly across a room

as informed in But engineers at the University of Washington have for the premier time developed a way to significantly charge a phone wirelessly Utilizing a laser. To accomplish this, the team mounted a thin power cell to the back of a smartphone, that charges the phone Utilizing power from the laser. The security system that shuts off the charging beam centers on low-power, harmless laser "guard beams," that are emitted with another laser source co-located with the charging laser-beam and physically "surround" the charging beam. Custom 3-D printed "retroreflectors" placed around the power cell on the phone reflect the guard beams back to photodiodes on the laser emitter. These strips act as a heatsink, dissipating excess heat from the charging beam and allowing the laser to charge the phone for hours.

collected by :John Smith