Latest in Gear

Image credit:

Glasses-free 3D projector offers a cheap alternative to holograms

Jon Fingas, @jonfingas
05.19.14 in AV
5 Shares
Share
Tweet
Share

Sponsored Links

Holograms are undoubtedly spiffy-looking, but they're not exactly cheap; even a basic holographic projector made from off-the-shelf parts can cost thousands of dollars. MIT researchers may have a budget-friendly alternative in the future, though. They've built a glasses-free 3D projector that uses two liquid crystal modulators to angle outgoing light and present different images (eight in the prototype) depending on your point of view. And unlike some 3D systems, the picture should remain relatively vivid -- the technology uses a graphics card's computational power to preserve as much of an image's original information (and therefore its brightness) as possible.

It's not a flawless system, at least not right now. While the modulators work at a speedy 240Hz, the resulting output is just 40Hz. That's fast enough for movies and TV shows, but a far cry from the 60Hz-plus that many regular TV sets can manage. To get wider viewing angles, MIT has also built a special screen using lenticular lenses like those you find in toys and children's books. However, perfection isn't really the point here. So long as the technology keeps advancing, it could lead to projectors with a "good enough" holographic effect that tides people over until real holography is within reach.

All products recommended by Engadget are selected by our editorial team, independent of our parent company. Some of our stories include affiliate links. If you buy something through one of these links, we may earn an affiliate commission.
Comment
Comments
Share
5 Shares
Share
Tweet
Share

Popular on Engadget

Google Duplex begins international rollout with a New Zealand pilot

Google Duplex begins international rollout with a New Zealand pilot

View
The Morning After: A final trailer for 'Star Wars: The Rise of Skywalker'

The Morning After: A final trailer for 'Star Wars: The Rise of Skywalker'

View
Todoist 'Foundations' update adds a host of organization features

Todoist 'Foundations' update adds a host of organization features

View
Microsoft's latest VR experiment is a literal walk in the park

Microsoft's latest VR experiment is a literal walk in the park

View
Lilium proves its electric air taxi can fly

Lilium proves its electric air taxi can fly

View

From around the web

Page 1Page 1ear iconeye iconFill 23text filevr