From 1990 to 1999, he was laboratory leader in two companies in Berlin and Munich on the field of photometry, colorimetry and especially in the UV-radiometry.
In 2000 until September 2006, he was project leader in the company Arnold&Richter in Munich, a world famous company for cinema film camera, film scanner and digital film production. .
Since October 2006, he is chair of the laboratory of lighting technology at the University to Darmstadt.
DVN: At the Technische Universität Darmstadt, you organize every 2 years the famous ISAL symposium. What can you tell us about former ISAL in 2005 and 2007?
Pr Khanh: The ISAL 2005 had 450 and the ISAL 2007 had 546 attendees.
The two main foci were the LED-technology, which was at the ISAL 2005 time in the conceptual phase and at 2007 with the first LED-headlamp cars like LEXUS LS600h and Audi R8, and new driver assistance systems like adaptive driving beam which incorporate camera technology and image processing.
DVN: and about ISAL 2009?
Pr Khanh: In the next two or three years, considering the selected papers, we will have the following trends:
- LED-technology with light efficiency of 70 lm/W in comparison to 50 lm/w of today automotive LED.
This allows us on one side to develop headlamps with an efficiency of more than 50% and in absolute numbers an effective luminous flux of 1100 lm just like HID-headlamps. Today, most LED-headlamps are having 600-800 lm. However, the LED headlamps will be reserved to the high-end segment, an introduction to a wider market even as an option is not probable.
- AFS/AFL-systems with dynamic bending light, city light or motorway light.
These systems will be realized with LED-technology in classical LED-arrangement from Osram, Nichia or Lumileds.
- AFS/ADB systems with LEDs in matrix beam structure.
Here, we will expect more than 100 LED-elements on the matrix in order to realize low and high beam, dynamic bending light, town light and further more functions.
- The biggest opportunities in this regard do not lay headlamp technology itself but the necessary camera and sensory technology. The future of the driver assistance is dependent rather on the quality of sensors, sensor fusion and image processing. At this point, we should see the potential for ISAL-conference to organize the discussion.
On the ISAL 2009, we shall have a podium discussion round of about 45 minutes, on which all of us will have the chance to discuss on the innovations in the crisis time, CO2-reduction issues, innovation and safety aspects. A further issue is the discussion on the light distribution on the road for an improved sight.