 |
|
Mini-beamer in a cell phone or PDA
June 25, 2009A summer barbecue by the lake - as the sausages sizzle on the grill some of the party would like to watch the soccer on TV. Today, a choice has to be made whether to stay by the lake or watch the match on a big public screen or the TV set at home. In future, barbecue enthusiasts and football fans will be able to enjoy both at the same time. Cellphone TV is coming closer and with an innovative mini beamer it will be possible to create a public viewing event on a small scale - for example on a white bathing towel by the side of a lake.
The mini projector was developed by research scientists at the Fraunhofer Institute for Applied Optics and Precision Engineering IOF in Jena in cooperation with their partners in the EU project HYPOLED. Unlike conventional beamers it does not need an additional illumination system. Because the beamer can operate without an extra light source it offers a number of advantages: Firstly, it takes up little space. The prototype is 2.5 centimeters long, has a diameter of 1.8 centimeters and can be easily integrated in a cellphone or a PDA. Secondly, the device needs very little energy and therefore does not overtax the battery.
"The key component of the projector is an organic display, or OLED, developed by our colleagues at the Fraunhofer Institute for Photonic Microsystems IPMS in Dresden," says Dr. Stefan Riehemann, group manager at the IOF. Currently the OLED display produces a monochrome image with a brightness of 10,000 candelas per square meter; for color images the brightness is about half that level. By way of comparison, a computer monitor generates about 150-300 candelas per square meter. A lens system projects the image produced by the OLED onto a wall or other flat surface. The lenses are made of glass but the research scientists are already developing an optical system which uses plastic lenses. As plastic lenses can be embossed, they can be produced in larger quantities more simply and cheaply than glass lenses. At the Laser World of Photonics trade show from June 15 to 18 in Munich, the researchers are exhibiting a monochrome prototype (Hall B2, Stand B2.421).
Fraunhofer-Gesellschaft
Fraunhofer-Gesellschaft
More Mini Beamer Current Events and Mini Beamer News Articles
|
Virginia Tech Hokies 1971-73 Throwback Replica Mini Helmet by Caseys Riddell has borrowed a page from the past in bringing back the glorious grey 2-bar facemask in its replica mini Throwback helmets. These 2-bar Throwbacks also use grey closed cel foam to mimic that worn in the era. We've also resurrected authentic Riddell logos that are printed onto the chinstraps and back of the helmet, just as they were back then. There are no front and back Riddell nameplates, because they didn't exist back then. The chinstrap uses a stud-and-buckle mechanism that allows it to be snapped and unsnapped like the real thing. | |
 |
Virginia Tech Hokies Replica Mini Helmet w/ Z2B Mask by Caseys The greatest miniature sports collectible ever invented! Approximately 1/2 scale versions of the full size helmets. ABS plastic shells with authentic-looking team decals. These also feature the brand new quarterback style mask that is modeled after the Z2B mask which appears on all Riddell Pro Line & Collegiate Authentic helmets. This new mask features a clear coating that gives it the exact look of a metal mask. This helmet has become a staple in the collectible market for several good reasons. It's affordable, doesn't take up too much room, and showcases an autograph like nothing else! |
| © 2009 BrightSurf.com |