An Ultra-thin Optical Phased Array (OPA) (IMAGE) California Institute of Technology Caption At Caltech, engineers have developed a new camera design that replaces the lenses with an ultra-thin optical phased array (OPA). Credit Caltech Usage Restrictions None 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.