Navigation Links
World of lights in the microcosmos
Date:6/16/2010

Television screens are becoming increasingly flatter - some have even become almost as thin as a sheet of paper. Their size takes impressive dimensions, much to the delight of home cinema fans. Cellphones and laptops also have ever brighter and more brilliant displays. All of these developments owe their thanks to miniature light-emitting diodes LEDs that beam background lighting into a multitude of devices.

However, LED technology does have a disadvantage. It is a point light source. But displays are two-dimensional. So how does one distribute the light from an LED evenly on as large a surface as possible, without massive energy loss? At the Fraunhofer Institute for Production Technology IPT in Aachen, a truly one-of-a-kind machine is currently emerging. They will soon be producing fiber optic film that solves this problem and distributes the light two-dimensionally. What's so unusual and special about this: The films possess superficial structures measuring in the single-digit micrometer range, while the sheets themselves measure at two by one meter in size. This makes them the largest of their kind throughout the EU. In addition, they can be produced cost-effectively and with energy-efficiency in mass reproduction.

To do so, the researchers of IPT developed a process chain with which they can populate large-scale sheets with the necessary microstructures. It's an ultraprecise process, says Dr. Christian Wenzel, senior engineer at IPT. Using pinpoint accuracy, the machine must apply the smallest structures just a few micrometers in size onto the surface of the film in a periodic sequence. In order to produce the stamp, we use special diamond tools, explains Wenzel. The stamp consists of a gossamer-thin nickel sheet, and itself is also infinitesimal: Its surface equals at most two by two millimeters. Like a dot matrix printer, it must then process a sheet measuring two by one meter in size, guided by the ultraprecision machine. Within a few days, we completely structured the entire surface. With the previous approach, the process would have taken weeks, or even months, says Wenzel. The preliminary product is the master: a transparent and optically conductive plastic panel.

In order to determine if the microstructured master possesses the desired characteristics, it must first be tested based on a few parameters. The machine can accomplish this task as well, says Wenzel. If the approximately 80 percent of the surface is completely structured, the machine tests the properties of the sheet. If these properties are not consistent with the optical design settings, then the machine can implement the necessary corrections during the imprint process. Well, we are optimizing the component while it's still in the machine, as Wenzel explains the advantages. Once the plastic surface has the desired light control capabilities, then the engineers immerse the master into a nickel bath and galvanize it. The nickel shim created in this manner can then go into mass replication.

With our ultraprecise machine, we are capable of producing an entire array of systems with background lighting, says Wenzel. No matter if it's for displays, architectural lighting or a car's interior lighting: IPT researchers can implement almost any optical design, thanks to this machine, and adapt the machine technology reliably, and above all, efficiently. In other words: ready for mass production.


'/>"/>

Contact: Dr.-Ing. Christian Wenzel
christian.wenzel@ipt.fraunhofer.de
49-241-890-4220
Fraunhofer-Gesellschaft
Source:Eurekalert  

Related biology technology :

1. Ed Brennan - New C.O.O. of Trans World Alloys
2. Neurocrine Biosciences Announces Conference Call and Webcast on Worldwide Agreement With Abbott on Elagolix
3. Rapid Increase in the Number of Worldwide Nanotechnology Degree Programs
4. Researchers discover new properties of Worlds thinnest material
5. Michael Youssef Offers Insight into the Muslim Perspective on Oil and the World Economy
6. New tool for exploring the ancient world.
7. Plant BioTech World Congress to Highlight Scientific Discoveries and Technologies Bringing New Hope to Feeding the World and Improving Lives
8. JatrophaWorld Training Programme Slated for India September 20-24, 2010
9. OriGene Technologies, Inc. to Build the Worlds Largest TrueMAB(TM) Monoclonal Antibody Facility in Wuxi, China
10. Microbix Reports a Record Increase in Worldwide Sales for 2nd Quarter 2010
11. Biofuels Inventor Chooses LOJINE Consulting as His Marketing Arm to Commercialize a New Technology Worldwide
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
World of lights in the microcosmos
(Date:6/23/2016)... June 23, 2016 A person commits a crime, ... scene to track the criminal down. An outbreak ... and Drug Administration (FDA) uses DNA evidence to track down ... Sound far-fetched? It,s not. The FDA has increasingly used ... investigations of foodborne illnesses. Put as simply as possible, whole ...
(Date:6/23/2016)... FRANCISCO , June 23, 2016   EpiBiome ... has secured $1 million in debt financing from Silicon ... ramp up automation and to advance its drug development ... its new facility. "SVB has been an ... beyond the services a traditional bank would provide," said ...
(Date:6/23/2016)... 23, 2016  Blueprint Bio, a company dedicated to ... medical community, has closed its Series A funding round, ... "We have received a commitment from Forentis ... need to meet our current goals," stated Matthew ... runway to complete validation on the current projects in ...
(Date:6/23/2016)... (PRWEB) , ... June 23, 2016 , ... ... a new line of intelligent tools designed, tuned and optimized exclusively for Okuma ... 12–17 in Chicago. The result of a collaboration among several companies with expertise ...
Breaking Biology Technology:
(Date:4/15/2016)... Research and Markets has announced ... 2016-2020,"  report to their offering.  , ... global gait biometrics market is expected to grow ... 2016-2020. Gait analysis generates multiple variables ... to compute factors that are not or cannot ...
(Date:3/31/2016)... Florida , March 31, 2016 ... ) ("LegacyXChange" or the "Company") LegacyXChange ... potential users of its soon to be launched online ... ( https://www.youtube.com/channel/UCyTLBzmZogV1y2D6bDkBX5g ) will also provide potential ... use of DNA technology to an industry that is ...
(Date:3/23/2016)... , March 23, 2016 ... erhöhter Sicherheit Gesichts- und Stimmerkennung mit Passwörtern ... (NASDAQ: MESG ), ein führender ... das Unternehmen mit SpeechPro zusammenarbeitet, um erstmals ... Finanzdienstleistungsbranche, wird die Möglichkeit angeboten, im Rahmen ...
Breaking Biology News(10 mins):