Luger Research e.U., the organizer of LpS 2013, announced a new attendance record with increased international visitors and exhibitors. The positive feedback from visitors, attendees, exhibitors and organizations confirm the importance of the event for the lighting industry. According to the event survey up to 93% of the visitors will be attending the LpS event in 2014. Almost 60% of all visitors were from manufacturing companies, over 10% were from distributors, about 8% came from engineering and design services and around 5% came from universities. The largest percentile of visitors was made up of executive and corporate managers (20%), followed by research and development engineers (17%), then distributors and sales people (14%) and finally, application engineers (4%).
The indepth technology focus and quality of the presentations have become highly valued trademarks of the event. Intense discussions between CTO’s, research and development engineers, project managers, engineers and manufacturers took place throughout the event. Stephane Rosa, Director of Lighting at Arrow Electronics EMEA declared: “This is the third time that we are here at the LpS event and we find it to be one of the best technology fairs in Europe. The value in this fair lies in the fact that people come here to see and understand the new technologies. I think it is more the quality rather than the quantity of customer contacts. Here you have a more quality approach with the customers. We have a lot of customers seen from Spain, from Israel, from everywhere. And I think the reputation of this fair is growing year by year.” An attendee from Norway said: “One of the highlights is the technical level! For me it has been very useful.”
Forty-six lectures given by international experts were covered in 16 sessions titled: Light Sources I-IV, LED Future I, LED Systems I-II, Driver & Controls I-IV, Optics I-II, Thermal Management I-II and Applications I.
Dr. Heinz Seyringer, EPIC Director, summarized highlights from lectures and workshops in a report for the European Photonics Industry Consortium (EPIC). One of the lectures he mentioned is from Annetta Kelso from Philips Lighting OEM, in The Netherlands about “Technology Push, Market Pull, Keeping a Sense of Proportion”. The presentation was about LED transformation in the lighting market with the main emphasis on the professional business-to-business lighting market incorporating project business and trade. Kelso showed how the introduction of LED technology changes the market and opens new opportunities as well as new threats. With LED light sources there are some general observations that can be made so far: Any LED light engine, based on a platform that is quickly outdated or requires changes with every upgrade, will be harder to sell in large volumes and is prone to generate irritation. Also, LED light engines with specifications outside of market needs or norms will cause frustration. Furthermore, LED light engines or luminaires that are overdesigned and/or adding functionality that is not needed in a certain application are tempting but at the same time a failure in a market that is extremely cost sensitive. Therefore it is of great importance to create innovations that make sense based on a deep understanding of market needs and not innovation for innovation’s sake. It is all about the correct combination and cooperation of technology staff and marketers.
The presentation “OLED Module Technologies for Professional Lighting Applications” from Joerg Amelung, Tridonic Dresden is part of the EPIC report as well. He gave a good overview of the technology, development, current status and applications of OLEDs. A very innovative example shown was an OLED luminaire where the front side of the device could be used as a mirror when switched off. Currently OLED solutions are mainly applied in the field of decorative lighting. To reach the professional lighting applications, OLEDs have to improve in technical parameters and cost aspects. In addition, Amelung pointed out that an OLED solution needs a thin converter. Thick converters used in traditional lighting solutions would reduce integration possibilities significantly.
The lecture from Matteo Meneghini, Professor at the University of Padua and member of the LpS Advisory Board, about “Degradation Mechanisms of High Power LEDs” was very popular. He reported on the key findings of his study about the main mechanisms that lead to degradation of high power LEDs. Together with his team, he carried out extensive reliability analyses on two different types of commercial white LEDs. In order to analyze the effects of operating current and storage temperature on the electro-optical properties of these devices, different stress tests were performed for several thousand hours. The results presented highlight the role of operating conditions in limiting the reliability of commercial white LEDs. He found out that both the current levels and the high temperatures are involved in various types of electro-optical degradation mechanisms. Temperature may induce modifications of the blue semiconductor chip, a darkening of the package, or the degradation of the plastic lens of the devices. Furthermore, he mentioned that the combined exposure to temperature and current levels may lead to significant optical power decay due to the generation of non-radiative defects in the active layer of the chip.
Among other journalists, Mark Hattersley from the lighting magazine mondo*arc, wrote his impression of the event and some of the lectures: “The variety of subjects covered in conversation during the event is refreshingly broad and yet focused. Lectures cover topics from LED failure management to the advance and alternatives to OLED applications, from the thermal behavior of bulbs to manufacturer responsibility in creating biologically friendly luminance. The conference is an ideal match for what was on show at the exhibition. Importantly, the topics hit resonance on a global level, providing experience from authorities in Europe, Asia, and the Americas. It is easy to imagine everyone – visitors and exhibitors alike – leaving with something to consider and perhaps implement into their area of the industry – and surely that is the raison d’être for events like these.”
There were workshops on the subjects of Testing and Standardization, 3-Dimensional System Design and Printoptical Technology, Computer Supported Design of LED and OLED Systems as well as Qualification and Reliability.
“The Cree-Workshop was good, it was very hands-on! Often workshops are just lectures, but here it was quite interesting to do something in real life”, said a workshop attendee from Norway. Cree ran their workshop on the subject of “Testing”. The participants worked on a step-by-step improvement of an existing luminaire design. They learned how to differentiate and make use of several experimental runs based on test results to optimize their luminaire design process.
Trends and Innovations
Over 80 exhibitors from all over the globe showed their latest innovations, products, equipment and services. The 2,000m² exhibition space was sold out again this year.
Underwriter Laboratories, Gold Sponsor of the event, presented their testing and approval services. Silver sponsor Tridonic and Lanyard sponsor Harvard Engineering showcased their competence in the field of electronic drivers while Pen sponsor Osram Opto Semiconductors, highlighted their latest LED technologies.
Two exhibitors reported having direct sales in Bregenz. Konica Minolta received two signed contracts for two measurement systems presented while the second exhibitor, working in the field of supplementary components, sealed a deal for 250,000 Euros.
There were so many innovations and trends on show that they cannot all be listed. The following are just some examples representative of the numerous products and services presented.
Trend 1: Transition to the Super system
Single devices are increasingly being combined into poly-systems. Cree from the U.S.A. , for example, launched their new CXA LED Arrays, at the LpS event in Bregenz. These are the industry’s first High-Density (HD) LED Arrays. According to Cree, this technology doubles the system intensity of spotlights compared to previous arrays. The LEDs placed on ceramic based PCBs are packed more densely and enable lighting manufacturers to create a new generation of products that delivers the same light intensity and quality at up to 50 percent lower power. Another example is Itswell from South Korea who presented their new LED Array L5256 Series for the general lighting market. The next integration step from arrays into modules and finally standardized modules could be obtained as well. For example, the Italian company LightCube, a spin-off from the University of Padua, provides know-how and the technology for solid-state light source designs ending up in all-in-one modules. The market is seeing an increased number of modularization and especially standardized modules (e.g. Zhaga). Multiple companies deliver Zhaga compliant system components for modules. One example is AAGStucchi from Italy who manufactures holders. The distributor, MSC, from Germany showed fully integrated lighting solutions with Zhaga compatible modules and snap-in reflectors.
Trend 2: Increasing Degree of Trimming, Optimization of Flow
Due to the cost pressure on LED lighting systems this trend will become a key driver for new developments. COB technology with its elimination of LED packages was presented by a number of companies.
The trimming trend can be obtained in the field of LED drivers as well. AC LEDs (shown by Neumüller/SSC) and also single-stage topologies driver concepts (Recom, ON Semiconductor) offer systems solutions with less or no converter stages to reduce costs and losses. CeramTec, manufacturer of ceramic materials and products, eliminates heat barrier for the thermal management design. They have improved their materials and found enhanced heat conduction solutions, enabling high power applications. marulaLED from South Africa showed their innovative Cool Tube Technology, which is an active cooling system that allows the production of modules with high luminous power and compact designs for high and low bay lighting. Amphenol LTW presented a connector system to eliminate wiring and soldering for LED boards. The benefits of this system are simplified production as well as safety and reliability.
Trend 3: Increasing Controllability, Degree of Completeness and Elimination of Human Involvement
Symposium-lectures as well as technologies shown at the exhibition are following the trend of digitalization. Dietmar Zembrot said, “LEDs and OLEDs together with sensors and innovative lighting controls will enable the industry to build intelligent lighting systems with a higher customer benefit. Even beyond energy efficiency cost and usability will be a key success factor.” Semiconductor light will finally be driven and controlled from “fully-digital” environments. Companies such as ams from Austria, Harvard Engineering from the United Kingdom, Tridonic from Austria, TCI from Italy and RECOM from Germany offer sensors and drivers for these purposes.
Self-controlled and self-adjustment systems are in preparation and will be part of next generation products.
Trend 4: Increasing Coordination
Tridonic launched their new LED Control Gear portfolio at the LpS event. The analogue/PWM controlled drivers, to increase controllability and coordinating signals, are available in 20W, 35W and 65W. TCI presented and offers custom specific LED drivers for non-standardized lighting solutions. Recom enlarged their driver portfolio in regards to power range and presented housings with smaller form factors. They displayed their driver competence with their new phase cutting dimmer for standard housing installations and a solar driven street lighting concept.
Trend 5: Increasing Dynamization
Bayer Material Science and Evonik, both from Germany, showed diffuser foils and optical materials for lenses. Bayer Material Science adapted their encapsulating materials to fit the needs of LEDs, available in transparent, colored or opaque. The material shows good optical qualities, is particularly weather-resistant, robust and yet flexible and is therefore widely applicable.
GL Optics from Germany and Allied Scientific Pro from Canada showed new products for light measurement that make a laboratory unnecessary. The handheld spectrometer GL SPECTIS 5.0 touch, displayed by GL Optics, enables mobile spectral light measurement with laboratory accuracy. The device uses the Android system and is designed for advanced measurements such as photo biological safety testing of LED products in accordance with EN 62471 or measurements of LEDs in accordance with CIE 127:2007. Allied Scientific Pro also showed an interesting measurement innovation: the Smartphone Spectrometer for LED Testing. This spectrometer is designed for on-location measurement and can be used with different versions of the iPhone. The rapid report generation device is made for CRI, spectrum, C.I.E 1931, C.I.E 1976, Illuminance/LUX. Opsira presented its Robogonio, which demonstrated how the robot-goniometer can simplify luminous intensity distribution measurements. Goniophotometers measure the spatial distribution of light visible to the human eye at a specific angular position.
Light Art Project
On the first evening of the event, Zumtobel invited exhibitors and visitors alike to view their innovative light installation at the newly renovated Vorarlberg Museum. This installation built the bridge between technology and application. Outside, the famous artist, Peter Kogler, used the museum’s façade for a fascinating light show. The 200 people who attended received detailed information about the lighting requirements given by the museum and the lighting system created and implemented by Zumtobel. Stefan von Terzi, Marketing Director at Zumtobel, talked about how they created a system that is customized and can be adjusted flexibly and quickly for the various needs of the museum. He explained how they met the quality requirements, particularly in regards to efficiency and perfect color rendering. Zumtobel developed so-called multi-functional mono-points (MMP), which allowed unobtrusive homogenous installation despite the building’s slightly conical layout. The MMP automatically detects when a luminaire is installed and connects it to the central Luxmate Litenet lighting management system. This system can be operated and configured via smartphones and tablets, which makes high precision controlling easy.
Almost 250 people came on board the MS Vorarlberg for a cruise around Lake Constance at the Get-Together Event. People got to know each other in a relaxed atmosphere while continuing discussions they started during the day. A beautiful sunset on the lake with mountains in the background was the perfect setting for the delicious food served. After the meal, live music on two of the decks created a terrific atmosphere.
LpS event organizer
Although many cutting edge developments have taken place already, the fundamental change process of the lighting industry is still ongoing. “Companies have to work on the profitability of their products. The challenges of phasing out old technologies and ramping up new technologies are huge. New processes, structures, partners, alliances and a new understanding of the lighting sector itself are necessary to compete in this rapidly changing market”, explained Siegfried Luger, LpS event director and publisher of LED professional.
New and enhanced technologies are the major innovation drivers in semiconductor lighting. Technologies are being increasingly merged on a sub-system level while diverse industries are intensifying collaborations. But the key question remains: “What will the winning approaches be in the years to come?”
The LED professional Symposium +Expo will serve as an international platform for innovation and development again in the upcoming year and will take place from September 30th to October 2nd, 2014, in Bregenz, Austria.
Bregenz is located on the shores of Lake Constance and is one of Austria’s leading cultural and leisure areas and is at the same time at the heart of Europe. It is the capital city of the state of Vorarlberg and the seat of the provincial government with a population of 28,000. The area is known as a high tech region in the heart of Europe and is only a 2-3 hour drive from other technology hubs in northern Italy, France and Germany. Vorarlberg borders on Germany, Switzerland and the Principality of Liechtenstein. Bregenz can be reached directly by rail and the airports of Altenrhein, Friedrichshafen and Memmingen. The major airports of Munich, Zurich and Stuttgart are less than a two hour drive away.
Platz der Wiener Symphoniker 1
via LED-professional http://www.led-professional.com/events/event-news/important-led-and-oled-lighting-technology-insights-trends-and-innovations-were-presented-at-the-3rd-led-professional-symposium-expo-in-bregenz-austria