Patent 9775548 was granted and assigned to Fitbit on October, 2017 by the United States Patent and Trademark Office.
Blood oxygenation sensors including high-aspect-ratio photodetector elements are discussed herein. Such high-aspect-ratio photodetector elements may provide improved signal-strength-to-power-consumption performance for blood oxygenation sensors incorporating such photodetector elements as compared with blood oxygenation sensors incorporating, for example, square photodetector elements.