A tiny Starship Enterprise fires on a tiny Klingon Battle cruiser with real animated images created in thin air. Credit: BYU
They may be tiny weapons, but Brigham Young University’s holography research group has figured out how to create lightsabers—green for Yoda and red for Darth Vader, naturally—with actual luminous beams rising from them.
Inspired by the displays of science fiction, the researchers have also engineered battles between equally small versions of the Starship Enterprise and a Klingon Battle Cruiser that incorporate photon torpedoes launching and striking the enemy vessel that you can see with the naked eye.
“What you’re seeing in the scenes we create is real; there is nothing computer generated about them,” said lead researcher Dan Smalley, a professor of electrical engineering at BYU. “This is not like the movies, where the lightsabers or the photon torpedoes never really existed in physical space. These are real, and if you look at them from any angle, you will see them existing in that space.”
It’s the latest work from Smalley and his team of researchers who garnered national and international attention three years ago when they figured out how to draw screenless, free-floating objects in space. Called optical trap displays, they’re created by trapping a single particle in the air with a laser beam and then moving that particle around, leaving behind a laser-illuminated path that floats in midair; like a 3D printer for light.
The research group’s new project, funded by a National Science Foundation CAREER grant, goes to the next level and produces simple animations in thin air. The development paves the way for an immersive experience where people can interact with holographic-like virtual objects that co-exist in their immediate space.
“Most 3D displays require you to look at a screen, but our technology allows us to create images floating in space—and they’re physical; not some mirage,” Smalley said. “This technology can make it possible to create vibrant animated content that orbits around or crawls on or explodes out of every day physical objects.”
To demonstrate that principle, the team has created virtual stick figures that walk in thin air. They were able to demonstrate the interaction between their virtual images and humans by having a student place a finger in the middle of the volumetric display and then film the same stick finger walking along and jumping off that finger.
Smalley and Rogers detail these and other recent breakthroughs in a new paper published in Nature’s Scientific Reports this month. The work overcomes a limiting factor to optical trap displays: wherein this technology lacks the ability to show virtual images, Smalley and Rogers show it is possible to simulate virtual images by employing a time-varying perspective projection backdrop.
“We can play some fancy tricks with motion parallax and we can make the display look a lot bigger than it physically is,” Rogers said. “This methodology would allow us to create the illusion of a much deeper display up to theoretically an infinite size display.”
About the Video
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).
Please remember we all have different opinions, Think Before You Speak or Write Something that is cruel to Others. After all, We are only Humans. Wishing you clear skies and wide eyes. To share your experiences or just leave a comment there is a area below. Read or listen.
We are the change the world has been waiting for!
Have you witnessed an unidentified flying object?
Whether you think UFOs are black projects, extraterrestrial craft, something else altogether, or just don’t know.
Unconditional love. The road we all get to walk. Unconditional love is like the sun.
