Fraunhofer Institute for Applied Optics and Precision Engineering (IOF) of Germany presented an OLED panel-based small projector at SID Display Week 2009.
This projector projects images of the OLED panel using only static optical systems such as lenses, instead of Texas Instrument Inc's DLP (digital light processing), LCOS (liquid crystal on silicon) or other reflective devices that are generally used for small projectors.
"Reflective technologies like DLP are unnecessary because OLED is self-luminous, said Constanze Grossmann of the Optics System Development Group of Fraunhofer IOF, who developed this projector.
The prototype projector combines five lenses and an 8 x 6mm green light-emitting OLED panel that has a pixel count of 640 x 480 (VGA). The projector is up to 17mm in diameter and 24mm in length and has a volume of about 10cm3.
The projector can project an image equivalent to a 6-inch screen at a distance of 30 to 50cm. However, it has a challenge to overcome: the low luminance of projected images.
"OLEDs are still developing," Grossmann said. "Our projector will become usable if their luminance is raised to four to five times the current level by improving the efficiency."
Nikkei Electronics Asia magazine is available each month free of charge to engineers, managers and other qualified readers.
Nikkei Electronics |
Nikkei Monozukuri |
Nikkei Microdevices |
Nikkei Automotive Technology |
|---|---|---|---|
 |
 |
 |
 |
| The magazine for electronics designers and managers. | Design You Won't Regret - How to Reduce the Risk of Accidents | The most comprehensive technical journal for makers and users of LSIs and LCDs. | The comprehensive automotive technology magazine. |
Copyright © 1995-2009 Nikkei Business Publications, Inc. All rights reserved.
All editorial content and graphics on this Web site may not be reproduced in whole or in part without the express permission of the copyright owner.
November 2009
October 2009
September 2009