Thinnest Pocket Projector

The world's thinnest "pico" video projector has been announced by researchers at Germany's Fraunhofer Institute for Applied Optics and Precision Engineering. The device uses an array of microlenses, each with its own tiny LCD. The device is just six millimeters thick.


(Prototype pico projector from Fraunhofer Institute )

Increasing the brightness of a projection normally means increasing the area of the light source used, says Marcel Sieler, a researcher at the Fraunhofer Institute for Applied Optics and Precision Engineering in Germany. Sieler was involved with developing the prototype. But to increase the area in this way requires a thicker lens to focus the larger image. "As the area of the light source increases, so does the volume of the lens," says Sieler. The result is a much bigger projector.

Sieler and colleagues created a novel type of lens that focuses light from a relatively large light source while remaining thin. The prototype video projector consists of 45 microlenses colored red, green, or blue. Each lens has an LCD with 200 by 200 pixels behind it. The light passing through each LCD is focused through a lens, and together each image is superimposed on top of each other to produce the final image. The design was inspired by a type of microlens array known as a "fly's eye condenser," which is normally used to mix light from different sources.

In his 1971 novel The Anome, SF Grandmaster Jack Vance described a very nifty pocket display projector:

Ifness drew from his pocket a tube of dull black metal an inch in diameter, four inches long. Along the flattened top a number of knobs caught the light and glittered in Ifness' hand. He made an adjustment, pointed the tube at the wall beside Etzwane, and projected a cone of light.

Etzwane had never seen a photograph so detailed.
(Read more about Vance's pocket display projector)

Via Technology Review.

Scroll down for more stories in the same category. (Story submitted 1/31/2011)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 0 )

Related News Stories - (" Engineering ")

Implosion Fabrication Shrinks 3D Objects To Nanoscale
'Carter had watched miniaturization a hundred times...' - Isaac Asimov, 1965.

ODYSSEUS Solar-Powered Stratospheric Plane Flies Forever
'The planes flew continuously, twenty-four hours a day...' - EB White, 1950.

Phil Nuyttnn's City Under The Sea
''Under the lower roof there was no water, but a clear and luminous atmosphere...' - Andre Laurie, 1895.

Stick-On Tape Speakers, As Predicted By Bruce Sterling
Flexible tape speakers, someday.

 

Google
  Web TechNovelgy.com   

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.

 

 

 

 

 

Current News

Spicy Tomatoes Created With Genetic Engineering
How about mashed potatoes and brown gravy?

Driverless Hotel Rooms Predicted In 1828
'Did you never see a moving house before?'

Yandex Self-Driving Taxi Is Very Smooth
'The big car was slowing down, its computer brain sensing an exit ahead.'

Shrimp Actually Made Of Algae Is A New Wave Food
Bring in that crop algae.

Cosplay Style Wings Could Work On Moon
'They're lovely! - titanalloy struts as light and strong as bird-bones...'

Tesla Model 3 Has Outside Speaker Grille
Robert Heinlein does it again.

Arizona Luddites Attack Self-Driving Vehicles
'Trucks don't drive by themselves...' Or do they?

Organaut! Russians 3D Print Living Tissue In Space
'For a while your colonists will have to come up [to orbit] to the Hospital...'

WINE Spacecraft To Extract Water From Asteroids
'Yes, strangely enough there was still sufficient water beneath the surface of Vesta.'

Japanese Swordsmiths Take On Asteroids
'... a tiny, rocket-powered projectile, drove towards the mysterious bulk.'

Saturn's Rings To Vanish, Let's Mine Them While We Can
'...the valuable shards of what had once been satellites.'

Humans Could Take Up A LOT Less Space
We'd have a lot more room for gardening...

Implosion Fabrication Shrinks 3D Objects To Nanoscale
'Carter had watched miniaturization a hundred times...'

GMO Houseplant Cleans Your Air
Removes compounds too small to be captured by a HEPA filter.

Nova Meat Can 3D Print Your Dinner
Printing out chicken nuggets.

MIT Scientists Create 'Peek-a-Boo Prober' From Jetsons
Well, George, it's the latest thing.

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.