Researchers have developed the world's first self-powered video camera that runs without a battery. The camera can produce one image per second in a well lit space.
Computer scientist Shree K Nayar from the Columbia University designed a pixel that can measure incident light and can convert it into electric power. The key enabling device in a pixel is the photodiode which produces an electric current when exposed to light. The mechanism allows each pixel to measure the intensity of light that falls on it. Through each image capture cycle, the pixels first record, read out the image and then harvest the energy and charge the sensor's power supply. The image sensor continuously toggles between image capture and power harvesting modes.
When the camera is not used to capture images, it can be used to create power for other devices, such as a smartphone or a watch. Nayar adds that the image sensor could use a rechargeable battery and charge it via its harvesting capability.
Mr Nayar, who heads the computer vision laboratory at the Columbia Engineering stated, "We are in the middle of a digital imaging revolution. A camera that can function as an untethered device forever -- without any external power supply -- would be incredibly useful."
"A few different designs for image sensors that can harvest energy have been proposed in the past," Shree K. Nayar, the professor who led the team, said in a release about the project. "However, our prototype is the first demonstration of a fully self-powered video camera."
The team will present its work at the international conference on computational photography at the Rice University in Houston April 24-26.
Source: Columbia Univ
Other Popular Deals
- Best IEMs to buy in India under Rs. 1000 (November 2016)Best budget earphones under Rs. 1,500 for bass heads
- The 10 best portable wireless Bluetooth speakers under Rs....The 6 best headphones under Rs. 3,000
- Best high-end speakers for your PC under Rs. 15,000The Best Portable Bluetooth Speakers under Rs. 10,000
- The best 2K and 4K monitors to buy in IndiaCES 2015: The best wireless Bluetooth headphones and...
- The Best Portable Bluetooth Speakers under Rs. 5,000Best gaming monitors to buy in India
- Dell UltraSharp UP3214Q UHD 32-inch MonitorHome entertainment projectors to buy
- HMDX JAM PartyHome entertainment projectors worth buying
- Best headphones in India under Rs. 2,000Transit by Soen Audio