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New Automotive Lighting Revolutionizes Road Safety - Joint press release from Daimler AG, Fraunhofer-Gesellschaft, HELLA KGaA Hueck & Co, Infineon Technologies AG, and OSRAM Licht AG - Infineon.com
New Automotive Lighting Revolutionizes Road Safety

 

PRZOOM - /newswire/ - Munich, Germany, 2016/10/07 - Joint press release from Daimler AG, Fraunhofer-Gesellschaft, HELLA KGaA Hueck & Co, Infineon Technologies AG, and OSRAM Licht AG - Infineon.com. FSE: IFX; OTCQX: IFNNY

   
 
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A German research alliance with well-known members from industry and research has developed the basis for smart, high resolution LED headlights, which takes adaptive forward lighting to a new dimension. The demonstration model was developed by overall project manager Osram in collaboration with the project partners Daimler, Fraunhofer, Hella and Infineon. Both headlights contain three LED light sources, each with 1,024 individually controllable light points (pixels). This means that the headlight can be adapted very precisely to suit the respective traffic situation to ensure optimum light conditions at all times without dazzling other drivers. The light can be adapted to take account of every conceivable bend in the road so that there are no dark peripheral areas. In addition, with the aid of sensors in the vehicle, the surroundings can be analyzed in order to illuminate oncoming traffic. This allows the driver to see these vehicles more clearly. At the same time, the beam of light does not shine on the heads of oncoming drivers, which means they’re not dazzled. As a result, such shifting headlights no longer have to be dimmed on country roads.

The project, which was funded by the German Federal Ministry of Education and Research (BMBF), has now been successfully completed after three and a half years with the production and field test of headlight demonstrators. For the implementation, Osram Opto Semiconductors, Infineon, and the Fraunhofer Institute for Reliability and Microintegration (IZM) developed an innovative LED chip with 1,024 individually controllable pixels. In the current generation of adaptive headlights on the market, several LED components are installed in the headlights side by side and on top of each other. Additional electronic components are required to switch light segments on and off. The number of segments is limited due to the restricted space in the headlight. In the new approach, electronic activation of the LED is integrated in the chip, resulting in a much higher resolution, while still meeting limited space requirements. For the innovative, high resolution, smart automotive lighting, in a second step, the Osram Specialty Lighting unit developed an LED module. It features an electrical and thermal interface that enables direct connection to the vehicle’s electronics.

The feasibility of the system has now been demonstrated successfully in the project; when a smart, high resolution headlight is used, driving and weather conditions are continuously analyzed: What is the course of the road, how fast is the car driving, is there oncoming traffic, and what is the distance between the car and other vehicles? Based on these conditions, the variable, adaptive light distribution ensures tailor-made lighting in every situation. For example, at high speeds, the range of the light beam is increased automatically. In city traffic, on the other hand, wider light distribution improves safety as, in addition to the road, also the sidewalk and peripheral areas are illuminated better. These functions are implemented fully electronically with no mechanical actuators. With glare-free full beam the driver always has the best possible light at night with no adverse effects for other drivers. For motorists this is a clear benefit in terms of awareness an important contribution towards reducing the risk of accidents when driving at night.

“We now want to develop this new type of high-resolution LED light sources so that it’s ready for serial production and we see enormous potential for its use in headlights,” said Stefan Kampmann, Chief Technology Officer at Osram Licht AG.

Infineon Technologies AG developed the intelligent driver circuitry in the innovative LED chip. This allows each of the 1,024 pixels to be controlled individually. The semiconductor manufacturer managed to design it in such a way that it can be connected directly with the light-emitting LED array above it. The technical challenge lay in reconciling the special requirements for this with the manufacturing technologies for LED drivers. With the intelligent driver circuitry and its broad automotive application know-how, Infineon is supporting the trend toward highly innovative, adaptive front lighting systems.

Hella KGaA Hueck & Co specified the main technical requirements for the light source based on the functional requirements from Daimler. The light and electronics expert developed the entire optical system for the light modules and its cooling concept as well as the prototype headlights. They are extremely efficient and generate a very homogeneous light pattern and, in addition, the individual pixels have a good lighting quality. The different light patterns can thus be generated purely electronically with no mechanical actuators. This is a step towards digitalization in the lighting industry. With this development, Hella is living up to its own standards for developing innovative lighting systems with and for customers and not only producing them in series with the necessary accuracy and quality, but also consistently thinking ahead in terms of technology.

In the research project, Daimler AG specified the functional requirements and the future vehicle properties for the complete headlight system. This was the basis for the components and module properties for the overall headlight system, which calculates the best light distribution with consideration of future sensors and vehicle architectures and passes this information on to the pixel headlights. As regards future electric vehicles, energy efficiency is an important requirement for the newly developed LEDs. A vehicle from Daimler with the smart LED headlights was used for the field trials under real traffic conditions.

The current Mercedes-Benz E-Class contains MULTIBEAM LED headlights from Hella which each have 84 individually controllable Osram high performance LEDs. Daimler is continuing to develop LED headlights with more and increasingly finer pixels and is consolidating its role as a pioneer in the lighting sector.

Fraunhofer contributed to the project its competence in connection technology (LED & ICs) and materials as well as in the detection and isolation of defects. The very high resolution was achieved through even finer structuring with extraordinary, miniaturized connection technology. For this purpose, at the Fraunhofer Institute for Reliability and Microintegration (IZM) in Berlin, Germany, LED arrays from Osram with 1,024 pixels were assembled on an active driver circuit from Infineon that controls each pixel individually. With extremely good cooling, the chips were assembled to enable micrometer-sized height differences to be balanced out.

Two different assembly techniques were investigated: thermos-compression bonding with porous gold nano-sponge and reflow soldering with highly reliable gold-tin. Both assembly techniques proved to be successful with a high yield and a robust interface for the subsequent LED processes.

One of the technological challenges of the high-resolution LED headlight is the comparatively large chip with 1,024 individually controllable pixels. This is because as the LED chip size increases it raises the risk of failure or decreased luminosity of the individual pixels in the pixel matrix during the production process. To overcome this problem, the Fraunhofer Institute for Applied Solid State Physics IAF in Freiburg, Germany developed a new technology to repair defects. It is based on ultraviolet laser micromachining and enables defects in LED chips to be repaired during the production process. It works like this: The microscopic defects are identified and removed with a UV laser through careful material removal or are electrically isolated without the laser inadvertently causing new defects, what are known as leakage current paths. When they have been repaired, the pixels regain their full luminosity the “luminescence pattern” is homogeneous again.

The economic benefits of laser micromachining from the Fraunhofer IAF are not only in reducing defects during production and thus lowering production discard and costs for large LED chips: The process can also increase the average life of the LEDs, which is an important competitive advantage and raises customer satisfaction.

The μAFS project was supported by the German Federal Ministry of Education and Research under funding ID 13N12510. It ran from February 2013 to September 2016. The aim was achieved by the project partners: to develop a smart lighting solution as the technical basis for a new class of energy-efficient LED headlights with additional road safety functions. Adaptive front-lighting systems (AFS) can be developed from this, which create more safety for drivers, passengers and other road users.

About Daimler
Daimler AG (daimler.com) is one of the world’s most successful automotive companies. With its divisions Mercedes-Benz Cars, Daimler Trucks, Mercedes-Benz Vans, Daimler Buses and Daimler Financial Services, the Daimler Group is one of the biggest producers of premium cars and the world’s biggest manufacturer of commercial vehicles with a global reach. Daimler Financial Services provides financing, leasing, fleet management, insurance, financial investments, credit cards, and innovative mobility services. Daimler sells its vehicles and services in nearly all the countries of the world and has production facilities in Europe, North and South America, Asia, and Africa. Its current brand portfolio includes, in addition to the world’s most valuable premium automotive brand, Mercedes-Benz, as well as Mercedes-AMG, Mercedes-Maybach and Mercedes me, the brands smart, Freightliner, Western Star, BharatBenz, FUSO, Setra and Thomas Built Buses, and Daimler Financial Services’ brands: Mercedes-Benz Bank, Mercedes-Benz Financial, Daimler Truck Financial, moovel, car2go and mytaxi. The company is listed on the stock exchanges of Frankfurt and Stuttgart (stock exchange symbol DAI). In 2015, the Group sold around 2.9 million vehicles and employed a workforce of 284,015 people; revenue totalled €149.5 billion and EBIT amounted to €13.2 billion.

About Fraunhofer
The Fraunhofer-Gesellschaft (fraunhofer.de) is the leading organization for applied research in Europe. Its research activities are conducted by 67 Fraunhofer Institutes and research units at locations throughout Germany. The Fraunhofer-Gesellschaft employs a staff of 24,000, who work with an annual research budget totaling more than 2.1 billion euros. Of this sum, more than 1.8 billion euros is generated through contract research. More than 70 percent of the Fraunhofer-Gesellschaft’s contract research revenue is derived from contracts with industry and from publicly financed research projects. Branches in the Americas and Asia serve to promote international cooperation.

About HELLA KGaA Hueck & Co
HELLA (hella.com) is a global, family-owned company, listed on the stock exchange, with approx. 34,000 employees at over 125 locations in roughly 35 countries. The HELLA Group develops and manufactures lighting technology and electronic products for the automotive industry and also has one of the largest retail organizations for automotive parts, accessories, diagnostics, and services within Europe. Complete vehicle modules, air-conditioning systems, and vehicle electrical systems are also produced in joint venture companies. With more than 6,000 people working in research and development, HELLA is one of the most important innovation drivers on the market. In addition, with sales of EUR 6.4 billion in fiscal year 2015/2016, the HELLA Group is one of the top 40 automotive suppliers in the world and one of the 100 largest German industrial companies.

About OSRAM
OSRAM (osram.de), based in Munich, is a globally leading lighting manufacturer with a history dating back more than 100 years. The portfolio ranges from high-tech applications based on semiconductor technology, such as infrared or laser lighting, to smart and connected lighting solutions in buildings and cities. OSRAM had around 33,000 employees worldwide at the end of fiscal 2015 (September 30) and generated revenue of almost €5.6 billion in that fiscal year.

Media Contacts
Daimler AG: Bernhard Weidemann - Research, Development and Environmental Communications
P: +49 711 17-95229 - E: bernhard.weidemann[.]daimler.com.

Fraunhofer-Gesellschaft: Klaudia Kunze - Head of Communication
P: +49 89 1205-1333 - E: presse[.]zv.fraunhofer.de.

HELLA KGaA Hueck & Co.: Dr. Markus Richter - Company Spokesman
P: +49 2941 38-7545 - E: Markus.Richter[.]hella.com.

OSRAM Licht AG: Torsten Wolf - Teamlead Media Relations
P: +49 89 6213-2506 - E: torsten.wolf[.]osram.com.

About Infineon
Infineon Technologies AG (infineon.com) is a world leader in semiconductor solutions that make life easier, safer and greener. Microelectronics from Infineon is the key to a better future. In the 2015 fiscal year (ending September 30), the company reported sales of about Euro 5.8 billion with some 35,400 employees worldwide. Infineon is listed on the Frankfurt Stock Exchange (ticker symbol: IFX) and in the USA on the over-the-counter market OTCQX International Premier (ticker symbol: IFNNY).

Information Number: INFATV201610-001

 
 
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New Automotive Lighting Revolutionizes Road Safety

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Infineon Technologies AG |
Contact: Monika Sonntag - Infineon.com 
+49 89 23424497 monika.sonntag[.]infineon.com
 
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