Turbocharging Ambient Backscatter Communication. 2013. As the team reports in a paper published online in December in the Proceedings of the Association for Computing Machinery on Interactive, Mobile, Wearable & Ubiquitous Technologies, a narrow, invisible beam from a laser emitter can deliver charge to a smartphone sitting across a room - and can potentially charge a smartphone as quickly as a standard USB cable. Next to each guard beam port are clear photodiodes, which detect the guard beams when they’re reflected back to the emitter by retroreflectors on the phone.Mark Stone/University of Washington. Copyright © 2021 ACM, Inc. 2011. The key challenges in achieving this are multi-fold: delivering greater than a watt of power across the room, minimizing the exposure of the resulting high-power lasers to human tissue, and finally ensuring that the design meets the form-factor requirements of a smartphone and requires minimal instrumentation to the environment. This alert has been successfully added and will be sent to: You will be notified whenever a record that you have chosen has been cited. (2017). In Solar Power from Space-SPS‘04, Vol. A narrow beam can deliver a steady 2W of power to 15 square-inch area from a distance of up to 4.3 meters, or about 14 feet. 2017. “Safety was our focus in designing this system,” said co-author Shyam Gollakota, an associate professor in the UW’s Paul G. Allen School of Computer Science & Engineering. Using a laser to wirelessly charge a smartphone safely across a room. Safety of Laser Products. Laser power beaming for defense and security applications. But the genius researchers over at the University of Washington have developed a way to charge your phone from across the room using freakin’ laser beams! 2015. Coherent Inc. 2017. February 21, 2018. 2013. PDB-C156. The researchers’ technology enables a laser emitter’s narrow, invisible beam to power up a smartphone from across the room — perhaps as quickly as a standard USB cable. Wireless Power Transfer via Strongly Coupled Magnetic Resonances. In Proceedings of the ACM SIGCOMM 2013 Conference on SIGCOMM (SIGCOMM ‘13). https://www.adafruit.com/product/1054, Amir Arbabi, Yu Horie, and Andrei Faraon. TEC1-12706. http://www.meadowlark.com/store/data_sheet/opticalshutter.pdf, Aaron N. Parks, Angli Liu, Shyamnath Gollakota, and Joshua R. Smith. Bożena Smagowska and Małgorzata Pawlaczyk-Łuszczyńska. The team says that the method of charging … IEC 60950-1 (2005) 2005. Share . http://advancedphotonix.com/wp-content/uploads/PDB-C156.pdf, S. Raavi, B. Arigong, R. Zhou, S. Jung, M. Jin, H. Zhang, and H. Kim. ATS-6000-C1-RO. IEEE Vehicular Technology Magazine 11, 4 (Dec 2016), 36--45. https://doi.org/10.1109/MVT.2016.2594944, Vincent Liu, Aaron Parks, Vamsi Talla, Shyamnath Gollakota, David Wetherall, and Joshua R. Smith. The high-powered guard beam is emitted from the central port. AutoCharge: Automatically Charge Smartphones Using a Light Beam. Rev. Charging Unplugged: Will Distributed Laser Charging for Mobile Wireless Power Transfer Work? Breaking News. Design of a flexible high performance quadcopter platform breaking the MAV endurance record with laser power beaming. 2014. 2008. 1--10. In Proceedings of the 2014 ACM Conference on SIGCOMM (SIGCOMM ‘14). 2014. In Private communication. “As a result, when the guard beam is interrupted by the movement of a person, the emitter detects this within a fraction of a second and deploys a shutter to block the charging beam before the person can come in contact with it.”. Scientists, together with those of Indian beginning, have developed a laser emitter that can safely cost a smartphone across a room as promptly as a common USB cable. Standard. (2017). The generator is mounted on top of an aluminum heatsink. The UW team’s prototype laser emitter. Engineers at the University of Washington have for the first time developed a method to safely charge a smartphone wirelessly using a laser. 2011. E Hoffert, P Soukup, and M Hoffert. In 2011 International Conference on Space Optical Systems and Applications (ICSOS). FingerIO: Using Active Sonar for Fine-Grained Finger Tracking. An optical wireless power transfer system for rapid charging. 2012. (Image Source; University of Washington) Scientists, including those of Indian origin, have developed a laser emitter that can safely charge a smartphone across a room as quickly as a standard USB cable. They even harvested a small amount of this heat to help charge the smartphone — by mounting a nearly-flat thermoelectric generator above the heatsink strips. New wireless charging tech juices your phone from across the room using lasers 2017. 2004. IEC 60825-1 2001. The guard beams deliver no charge to the phone themselves, but their reflection from the smartphone back to the emitter allows them to serve as a “sensor” for when a person will move in the path of the guard beam. As the team reports in a paper published online in December in the Proceedings of the Association for Computing Machinery on Interactive, Mobile, Wearable & Ubiquitous Technologies, a narrow, invisible beam from a laser emitter can deliver charge to a smartphone sitting across a room - and can potentially charge a smartphone as quickly as a standard USB cable. 2006. CLEO: 2014, STu3M.5. Quasistatic Cavity Resonance for Ubiquitous Wireless Power Transfer. International Electrotechnical Commission. https://doi.org/10.1145/2716281.2836089, Wibotic. The next generation of nano-scale optical devices are expected to operate with Gigahertz frequency, which could reduce the shutter’s response time to nanoseconds, added Majumdar. SPIE Laser Power Beaming II Proceedings (1995). http://www.ossia.com/, André Kurs, Aristeidis Karalis, Robert Moffatt, J. D. Joannopoulos, Peter Fisher, and Marin Soljačić. Home; UW Department of Electrical & Computer Engineering; Spotlights ; Using a laser to wirelessly charge a smartphone safely across a room. 1995. If so, the pre-bedtime task of plugging in your smartphone, tablet or laptop may someday be replaced with a simpler ritual: placing it on a table. IEEE Antennas and Propagation Magazine 48, 1 (2006), 157--159. The ACM Digital Library is published by the Association for Computing Machinery. Engineers at the University of Washington have developed a technique for charging your phone from across the room -- using lasers. 2017. High contrast optical shutter. 2013. 2009. Home battery charging Charging a smartphone wirelessly across the room using a laser. Engineers at the University of Washington have demonstrated the ability to charge a smartphone wireless from across a room using a laser. 2011. The wireless charging system created by University of Washington engineers. The safety system that shuts off the charging beam centers on low-power, harmless laser “guard beams,” which are emitted by another laser source co-located with the charging laser-beam and physically “surround” the charging beam. For more information, contact the team at laserpower@cs.washington.edu. (1995). We demonstrate a novel laser-based wireless power delivery system that can charge mobile devices such as smartphones across a room. Ossia Inc. 2017. Share. Researchers have long speculated that a device like this might make wires and charging cables a thing of the past, allowing people to beam energy invisibly across a room to … Charging a smartphone wirelessly across the room using a laser. 2011. [n. d.]. ACM, New York, NY, USA, 619--630. https://doi.org/10.1145/2619239.2626312, Advanced Photonix. 22 February 2018. In 2013 IEEE 39th Photovoltaic Specialists Conference (PVSC). We use cookies to ensure that we give you the best experience on our website. Michael Buettner, Richa Prasad, Alanson Sample, Daniel Yeager, Ben Greenstein, Joshua R. Smith, and David Wetherall. These strips act as a heatsink, dissipating excess heat from the charging beam and allowing the laser to charge the smartphone … Using a laser to wirelessly charge a smartphone safely across a room. 567. 0.5W Solar panel. Optical wireless power transmission at long wavelengths. In Computing, Communication and Networking Technologies (ICCCNT), 2014 International Conference on. To ensure that the charging beam does not overheat the smartphone, the team also placed thin aluminum strips on the back of the smartphone around the power cell. 1074--1076. https://doi.org/10.1109/PVSC.2013.6744326, Rajalakshmi Nandakumar, Vikram Iyer, Desney Tan, and Shyamnath Gollakota. (2009). 2009. This is achieved by mounting a thin power cell to the back of a smartphone, which enables it to absorb power from the laser. Our results show that we can deliver more than 2 W at ranges of 4.3 m and 12.2 m for a smartphone (25 cm2) and table-top form factor (100 cm2) receiver respectively. You the best experience on our website for Space and terrestrial missions and guard lasers are normally invisible but... Power cell mounted on top of an aluminum heatsink the Alfred P. Sloan and... 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