Planar Light Source Device: Rear (image) American Institute of Physics Share Print E-Mail Caption This image shows a planar light source device from the rear. Credit N.Shimoi/Tohoku University Usage Restrictions This image may be used only with appropriate caption and credit. Share Print E-Mail 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.