The new techniuqe can produce lenses in seconds. It uses a laser pulse to create patters on a transparent substrate, then reflects the laser back onto itself, and the interference pattern is then “printed” between the two beems. The resulting lenses have hundreds of zones that focus light.
The great thing about this new technique is that it’s also ripe for mass production. It can work on a variety of materials and shapes.
Applications for this technology include printing telescope lenses in space, or embedding data. The researchers hope to apply the technique to print lenses on semiconductors, as well.