Oximeter Array Assembly (IMAGE) University of California - Berkeley Caption The sensor is assembled from a printed sheet of organic photo detectors (top) and organic red and infrared LEDs (bottom). Credit Yasser Khan, Arias Research Group, UC Berkeley Usage Restrictions with credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.