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April 2015

Mohammad Anas Wahaj | 18 apr 2015

Professor Shree K. Nayar of Columbia University, research engineer Daniel Sims and consultant Mikhail Fridberg of ADSP Consulting, have invented a fully self-powered video camera that can produce an image each second, indefinitely, of a well-lit indoor scene. They designed a pixel that can not only measure incident light but also convert the incident light into electric power. According to Prof. Nayar, 'We are in the middle of a digital imaging revolution. I think we have just seen the tip of the iceberg. Digital imaging is expected to enable many emerging fields including wearable devices, sensor networks, smart environments, personalized medicine, and the Internet of Things. A camera that can function as an untethered device forever - without any external power supply - would be incredibly useful.' The team used off-the-shelf components to fabricate an image sensor with 30x40 pixels. In this prototype camera, which is housed in a 3D printed body, each pixel's photodiode is always operated in the photovoltaic mode. Read on...

Columbia Engineering: Columbia Engineering Professor Invents Video Camera that Runs without a Battery
Author: Holly Evarts



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