This Camera Is Powered by Light

Device's photodiodes capture images and also charge the power supply.

By Gemma Tarlach
Nov 30, 2015 6:00 AMNov 14, 2019 9:33 PM
light-camera.jpg
This camera is its own power source. | Computer Vision Laboratory/Columbia Engineering

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Light is energy. Cameras need energy to work. A modern camera works by sensing light. This cycle has provided an elegant solution to one of our digital age’s universal problems: how to power a camera infinitely.

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