Inspired by the displays of science fiction like the holodeck from Star Trek and the Princess Leia projector from Star Wars, a BYU electrical and computer engineering team is working to develop screenless volumetric display technologies. Led by Dan Smalley, BYU professor of electrical engineering, the team uses laser beams to trap and illuminate a particle and then to move the particle and draw an image in mid-air. “Like a 3D printer for light,” these displays appear as physical objects to the viewer and, unlike a screen-based image, can be seen from any angle. In this demonstration of the technology, the team shows how they’ve created tiny animations of battle explosions and other images created completely with laser light. Smalley also provides an update on new research that shows how to simulate virtual images in a volumetric display (research published in the April 6, 2021 issue of Scientific Reports).
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