Micro Lens on a Needle (IMAGE) Deutsches Elektronen-Synchrotron DESY Caption This is an electron micrograph of the micro lens on the tip of a needle. The lens has a diameter of just two microns (thousandths of a millimeter). Credit Image: University of Göttingen Usage Restrictions Picture may be used with proper credit line. 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.