Printing technique and lens (IMAGE) Optica Caption The new technique uses a custom projection lens to blur the laser beams used to solidify a light-sensitive resin. This produces an optically smooth surface, which allows commercial quality lenses to be printed such as the one shown in the bottom left. Credit Daniel Webber, National Research Council of Canada. Usage Restrictions None License Original 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.