Mini-Beamer In A Cell Phone Or PDA?

A 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).

[Dr. Stefan Riehemann @ Fraunhofer-Gesellschaft]

• Pro 02402 CD/DVD Expandable Binder Holds 96 Disks
• John Travolta (In Front of Projector) Black Wood-Mounted Movie Poster Print - 24″ X 36″
• John Travolta (In Front of Projector) Framed Movie Poster Print - 24″ X 36″
• Vogel’s EMC5000 DVDock Car Headrest Mount for Portable DVD Players
• Epson MovieMate 72 720p 3LCD Home Theater Projector with Built In DVD Player
• 1080i HDMI Video Theater Projector 4 wii, PS3, XBox, DVD
• EyeClops Mini Projector
• Torpedo Dark Room Projector
• Zoombox DVD Entertainment Projector
• Game TV LCD Projector for PS3, PS2, Xbox 360, Wii, DVD
• Game LCD Projector for PS2, XBOX, GAMECUBE, TV, DVD, VCR w- Remote Control
• Xtreme Photostory On CD & DVD V8
• Classic 16mm Movie Projector Films DVD: Vintage 16mm Film Reels Camera Projectors Films Including Maintenance & Care, Threading, And Much Much More
• The Magical Childs Transcendent Mind
• Film to Video - Tips Tricks and Secrets
• 50 FT GOLD PREMIUM HDMI 1.3 TO CABLE FOR HDTV DVD PS3
• Philips DVP5990/F7 DVD Player with 1080p HDMI Upconversion and DivX
• HDMI to VGA HD15 (Male) Cable
• Seeing clearly: multimedia stations allow teachers to engage an entire classroom on a subject, using the Internet, DVDs and PhotoShop through a projector. … An article from: District Administration