Audi presents pure-LED headlights
Christoph Hammerschmidt <mailto:[email protected]> EE Times Europe =
<http://eetimes.eu/>
(08/10/2007 4:24 AM EDT)
MUNICH, Germany =97 Audi claims to be the first car manufacturer using LED =
headlights. The company has developed a headlight assembly in which all =
lighting functions are implemented as semiconductors.
The assembly contains low-beam headlamps as the main function, =
consisting of two LED arrays with four active elements each, embedded in =
a free-form reflector. Three additional LED arrays with two LED chips =
each are located behind an optical lens; their task is controlling the =
bright/dark boundary and the range of the headlights. For the high-beam =
headlight, a four-LED array is located adjacent to the low-beam arrays. =
Near the lower edge of the assembly, a row of 24 LEDs forms the daytime =
running light. Further elements of the lighting assembly are printed =
circuit boards carrying the LED chips and a heat sink. In addition, a =
blower is provided to keep the LEDs cool and to de-ice the unit.
At a current of 1 A, each LED array achieves a luminous flux of 600 =
lumen, Audi claims. For the future, the company plans to combine the LED =
technology with other innovative semiconductor-driven headlamp =
technologies such as swiveling headlights.
The assembly will come as an option for the R8 luxury sports car from =
2008, the company said. For the deployment of pure LED lights in =
production cars, Audi has received a special permission from the EU =
traffic administration. A regulation regarding the use of this =
technology for vehicles in general is expected for 2008.
Dennis Foulke
Principle Test Engineer
ITT Incorporated
4200 Colonel Glenn Hwy., Suite 600
Beavercreek, OH 45431
TEL: 937 431 6314
FAX: 937 431 5386
EMAIL: [email protected]
*****************************************************************
This e-mail and any files transmitted with it may be proprietary =
and are intended solely for the use of the individual or entity to =
whom they are addressed. If you have received this e-mail in =
error please notify the sender. Please note that any views or
opinions presented in this e-mail are solely those of the author =
and do not necessarily represent those of ITT Corporation. The =
recipient should check this e-mail and any attachments for the =
presence of viruses. ITT accepts no liability for any damage =
caused by any virus transmitted by this e-mail.
*******************************************************************
-- =
Dennis Foulke
"Every reform was once a private opinion." - Ralph Waldo Emmerson
_______________________________________________
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev
Christoph Hammerschmidt <mailto:[email protected]> EE Times Europe =
<http://eetimes.eu/>
(08/10/2007 4:24 AM EDT)
MUNICH, Germany =97 Audi claims to be the first car manufacturer using LED =
headlights. The company has developed a headlight assembly in which all =
lighting functions are implemented as semiconductors.
The assembly contains low-beam headlamps as the main function, =
consisting of two LED arrays with four active elements each, embedded in =
a free-form reflector. Three additional LED arrays with two LED chips =
each are located behind an optical lens; their task is controlling the =
bright/dark boundary and the range of the headlights. For the high-beam =
headlight, a four-LED array is located adjacent to the low-beam arrays. =
Near the lower edge of the assembly, a row of 24 LEDs forms the daytime =
running light. Further elements of the lighting assembly are printed =
circuit boards carrying the LED chips and a heat sink. In addition, a =
blower is provided to keep the LEDs cool and to de-ice the unit.
At a current of 1 A, each LED array achieves a luminous flux of 600 =
lumen, Audi claims. For the future, the company plans to combine the LED =
technology with other innovative semiconductor-driven headlamp =
technologies such as swiveling headlights.
The assembly will come as an option for the R8 luxury sports car from =
2008, the company said. For the deployment of pure LED lights in =
production cars, Audi has received a special permission from the EU =
traffic administration. A regulation regarding the use of this =
technology for vehicles in general is expected for 2008.
Dennis Foulke
Principle Test Engineer
ITT Incorporated
4200 Colonel Glenn Hwy., Suite 600
Beavercreek, OH 45431
TEL: 937 431 6314
FAX: 937 431 5386
EMAIL: [email protected]
*****************************************************************
This e-mail and any files transmitted with it may be proprietary =
and are intended solely for the use of the individual or entity to =
whom they are addressed. If you have received this e-mail in =
error please notify the sender. Please note that any views or
opinions presented in this e-mail are solely those of the author =
and do not necessarily represent those of ITT Corporation. The =
recipient should check this e-mail and any attachments for the =
presence of viruses. ITT accepts no liability for any damage =
caused by any virus transmitted by this e-mail.
*******************************************************************
-- =
Dennis Foulke
"Every reform was once a private opinion." - Ralph Waldo Emmerson
_______________________________________________
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev
