Posted on 07 January 2020

LED professional Symposium + Expo 2013




The Lighting Hub

Over 1,100 visitors from 34 countries attended the LED professional Symposium +Expo 2013 in Bregenz, Austria, from September 24th to 26th. Research institutes, lighting organizations and the lighting industry presented their insights on the latest trends in LED and OLED lighting technologies in multiple sessions, workshops and throughout the 2,000 m2 exhibition area. Keynote speaker, Dietmar Zembrot, President of LightingEurope said, "I think this is one of the most important lighting events in the world". By Marisa Robles Consée, Corresponding Editor; Bodo's Power Systems

Luger Research e.U., the organizer of LpS 2013, announced a new attendance record with increased international visitor and exhibitor figures. 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% 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 visitors had the choice of 46 lectures, six workshops, two techpanels, an international exhibition and networking opportunities. "This makes it a "must go" event for professional audience in the lighting industry", Siegfried Luger, LpS event director and publisher of LED professional, is convinced. The lighting industry is in a fundamental process of change. "Predictions for the next five to seven years are that we'll see more LED/OLED performance increases along with continuous price declines. Therefore, profitability is the key to success", he says. The challenges of phasing out old technologies and ramping up new technologies are huge. Siegfried Luger also says that "merging" lighting with the fast and innovative semiconductor industry requires new processes, structures, partners, alliances and a new understanding of the lighting sector itself.

New and enhanced technologies are the major innovation drivers in semiconductor lighting. Technologies are increasingly being merged on a sub-system level while various industries are intensifying collaborations. But the key question remains: "What will the winning approaches be in the years to come?" In order to be able to make future-oriented decisions, it is important that the different technological developments are understood. “The LpS is designed to give the attendees an overview of relevant background information that will help them find answers and solutions to their questions and problems”, says Luger. At the same time, leading global companies and research organizations will be presenting their newest products, services, components, modules, systems and production techniques.

New in 2013

The markedly extended program offered an even deeper and broader spectrum of information, knowledge and topics for discussion this year. A total of 46 lectures on the topics of LEDs, OLEDs, optics, electronics, equipment, materials, reliability, standards, measurement, design and applications cover the most important subjects and trends in the SSL field. The workshop program has also been extended noticeably. This year, six workshops were offered in two parallel tracks on specific LED technology topics. The subjects of Reliability and Thermal Testing, Standardization, 3-Dimensional System Designs and Optics, Printoptical Technology, Computer Supported Design of LED and OLED Systems as well as Qualification and Reliability were discussed and explained in an interactive environment. Due to the increasing number of exhibitors, the exhibition area was increased by 20% or almost 2,000 m². Besides the many interesting new developments presented by about 80 international exhibitors, the LpS was also a good place for product launches in Europe.

The Keynote speakers discussed the actual lighting trends

This year the Tech Panels were open to the public for the first time. Dietmar Zembrot (President of LightingEurope and CEO of Trilux), Klaus Vamberszky (Executive Vice President of Technology at Zumtobel), Christian May (Head of Business Unit Lighting and Flexible Integration at Fraunhofer), Nicola Trivellin (Researcher at the University of Padova) and Henk Veldhuis (Chair of the Technical Advisory Working Group of the Connected Lighting Alliance) discussed "LED & OLED Lighting Innovations - How to Break Through".

Two tracks were dedicated to drivers and controls; one of the core topics this year. Stefan Zudrell-Koch, the director of strategic marketing and business development at Dialog Semiconductor was giving a talk on this subject titled "Digital Processing Techniques in Retrofit Lamp Driver ICs". Today, off-line AC/DC LED drivers are dominantly operated and controlled by mixed signal control ICs; the first generation of digital power management ICs. IC technologies with a substantially higher scale of integration are available at low cost today. They allow for large-scale integration and substantially more complex logic structures to be implemented compared to today's solutions. Digital systems offer free configurability. These new systems are enabled with unprecedented performance, flexibility and ease of use. Zudrell- Koch demonstrated how such technologies help master challenges in retrofit lamp design, drive cost reduction, and make LED lamps future proof.

Trends and Innovations

About 80 exhibitors from all over the globe showed their latest innovations, products, equipment and services. Underwriter Laboratories, Gold Sponsor of the event, presented its 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 its latest LED technologies.

Trend 1: Transition to the Super system

Single devices are increasingly being combined into poly-systems. Cree for example, launched their new CXA LED Arrays. 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 are supposed to enable lighting manufacturers to design products that deliver the same light intensity and quality at up to 50% lower power. Another example is Itswell from South Korea who presented its LED Array L5256 Series for the general lighting market. The next integration step into standardized modules was demonstrated by the Italian company LightCube, a spin-off from the University of Padua, with its 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. 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.

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 states: "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 selfadjustment systems are in preparation and will be part of next generation products.

Trend 4: Increasing Coordination

Tridonic launched their 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 custom specific LED drivers for non-standardized lighting solutions. Recom enlarged their driver portfolio in regard 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: Optical properties

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, coloured or opaque. The material shows good optical qualities, is particularly weather-resistant, robust and yet flexible and is therefore widely applicable.


Light Art Project: On the first evening of the event, Zumtobel invited exhibitors and visitors to view their light installation at the newly renovated Vorarlberg Museum. This installation intended to build a bridge between technology and application. Outside, the artist Peter Kogler used the museum's façade for a fascinating light show. The 200 attendants received detailed information about the lighting requirements given by the museum and the lighting system created and implemented by Zumtobel.


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