LED Lamps: Less Energy, More Light (image) Fraunhofer-Gesellschaft Caption Gallium nitride transistors enable the compact design of this 2090 lumen retrofit LED lamp (exploded diagram for purpose of illustration). Credit © Fraunhofer IAF Usage Restrictions The picture may be used for editorial purposes only. It is protected by copyright. The use is free of charge if the reference is mentioned. 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.