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Author Topic: Das muß man gesehen haben: Kontaktlinsen mit virtuellen Displays  (Read 4473 times)

ama

  • Jr. Member
  • *
  • Posts: 1145

[*QUOTE*]
--------------------------------------------------------------------------
derStandard.at | WebStandard | Innovationen
18.01.2008 19:25
Kontaktlinsen mit virtuellen Displays
US-Forscher konnten Kontaktlinse mit elektronischen Schaltkreisen und LEDs
ausstatten

Einen ersten Prototypen für Kontaktlinsen mit virtuellem Display hat eine
Forschergruppe um Babak Parviz von der University of Washington
vorgestellt.
[...]
Der Prototyp kombiniert wenige Nanometer dicke Schaltkreise und LEDs im
Ausmaß von etwa einem Drittel Millimeter mit dem flexiblen Plastik einer
Kontaktlinse.

Wirklich funktional sind die Linsen noch nicht: Die roten LEDs leuchten
nicht. Die dafür nötige Stromversorgung wollen die Forscher durch
Energie-Übertragung per Radiowellen und Solarzellen auf den Linsen
erreichen.
[...]
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[*/QUOTE*]

mehr:
http://derStandard.at/Text/Corporate/?id=3188138


Hier die Pressemeldung der Universität im Original:

http://uwnews.washington.edu/ni/article.asp?articleID=39094

[*QUOTE*]
--------------------------------------------------------------------------
UW Office of News and Information
 
Jan. 17, 2008 | Technology | Science

Contact lenses with circuits, lights a possible platform for superhuman
vision

Hannah Hickey <hickeyh [bat] u.washington.edu>

Movie characters from the Terminator to the Bionic Woman use bionic
eyes to zoom in on far-off scenes, have useful facts pop into their field
of view, or create virtual crosshairs. Off the screen, virtual displays
have been proposed for more practical purposes -- visual aids to help
vision-impaired people, holographic driving control panels and even as a
way to surf the Web on the go.

The device to make this happen may be familiar. Engineers at the
University of Washington have for the first time used manufacturing
techniques at microscopic scales to combine a flexible, biologically safe
contact lens with an imprinted electronic circuit and lights.
"Looking through a completed lens, you would see what the display is
generating superimposed on the world outside," said Babak Parviz, a
UW assistant professor of electrical engineering. "This is a very small
step toward that goal, but I think it's extremely promising." The results
were presented today at the Institute of Electrical and Electronics

http://uwnews.org/photos.asp?articleID=39094&spid=39099



University of Washington
Contact lenses with metal
connectors for electronic
circuits were safely worn by
rabbits in lab tests.
 

http://uwnews.org/photos.asp?articleID=39094&spid=39104



University of Washington
A researcher holds one of the
completed lenses.

Engineers' international conference on Micro Electro Mechanical Systems by
Harvey Ho, a former graduate student of Parviz's now working at Sandia
National Laboratories in Livermore, Calif. Other co-authors are Ehsan
Saeedi and Samuel Kim in the UW's electrical engineering department and
Tueng Shen in the UW Medical Center's ophthalmology department.

There are many possible uses for virtual displays. Drivers or pilots could
see a vehicle's speed projected onto the windshield. Video-game companies
could use the contact lenses to completely immerse players in a virtual
world without restricting their range of motion. And for communications,
people on the go could surf the Internet on a midair virtual display
screen that only they would be able to see.

"People may find all sorts of applications for it that we have not thought
about. Our goal is to demonstrate the basic technology and make sure it
works and that it's safe," said Parviz, who heads a multi-disciplinary UW
group that is developing electronics for contact lenses.

The prototype device contains an electric circuit as well as red
light-emitting diodes for a display, though it does not yet light up. The
lenses were tested on rabbits for up to 20 minutes and the animals showed
no adverse effects.

Ideally, installing or removing the bionic eye would be as easy as popping
a contact lens in or out, and once installed the wearer would barely know
the gadget was there, Parviz said.

Building the lenses was a challenge because materials that are safe for
use in the body, such as the flexible organic materials used in contact
lenses, are delicate. Manufacturing electrical circuits, however, involves
inorganic materials, scorching temperatures and toxic chemicals.

Researchers built the circuits from layers of metal only a few nanometers
thick, about one thousandth the width of a human hair, and constructed
light-emitting diodes one third of a millimeter across. They then
sprinkled the grayish powder of electrical components onto a sheet of
flexible plastic. The shape of each tiny component dictates which piece it
can attach to, a microfabrication technique known as self-assembly.

Capillary forces -- the same type of forces that make water move up a
plant's roots, and that cause the edge of a glass of water to curve upward
-- pull the pieces into position.

The prototype contact lens does not correct the wearer's vision, but the
technique could be used on a corrective lens, Parviz said. And all the
gadgetry won't obstruct a person's view.

"There is a large area outside of the transparent part of the eye that we
can use for placing instrumentation," Parviz said. Future improvements
will add wireless communication to and from the lens.

The researchers hope to power the whole system using a combination of
radio-frequency power and solar cells placed on the lens, Parviz said.

A full-fledged display won't be available for a while, but a version that
has a basic display with just a few pixels could be operational "fairly
quickly," according to Parviz.

The research was funded by the National Science Foundation and a
Technology Gap Innovation Fund from the University of Washington.

###

For more information, contact
Parviz at (206) 616-4038
or babak [bat] ee.washington.edu.
During the IEEE meeting Jan. 17-18
reach Parviz by cell phone at (206) 650-6168.

RELATED CONTENT FROM UWNEWS.ORG

UW's College of Engineering wins three of Technology Review's TR35 awards
Aug. 15, 2007

MORE UWNEWS.ORG STORIES ABOUT BABAK PARVIZ (babak@ee.washington.edu )
RSS news feed: uwnews.org news releases about Babak Parviz

Contact lenses with circuits, lights a possible platform for superhuman
vision  Jan. 17, 2008

UW's College of Engineering wins three of Technology Review's TR35 awards
Aug. 15, 2007

©2008 University of Washington Office of News and Information | http://www.uwnews.org

uwnews [bat] u.washington.edu
phone: 206-543-2580
fax: 206-685-0658
Box 351207
Seattle WA
USA 98195
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[*/QUOTE*]


http://uwnews.org/photos.asp?articleID=39094&spid=39098




DAS muß man gesehen haben: Großaufnahmen

http://uwnews.washington.edu/ni/images/newsreleases/2008/January/
20080117_pid39098_aid39094_contact1_sourceimage.jpg


http://uwnews.washington.edu/ni/images/newsreleases/2008/January/
20080117_pid39104_aid39094_contactlenshand_sourceimage.jpg

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Kinderklinik Gelsenkirchen verstößt gegen die Leitlinien

Der Skandal in Gelsenkirchen
Hamer-Anhänger in der Kinderklinik
http://www.klinikskandal.com

http://www.reimbibel.de/GBV-Kinderklinik-Gelsenkirchen.htm
http://www.kinderklinik-gelsenkirchen-kritik.de
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