Workshop | Sept 25, 2012 | 09.30-14.00 | max. 60 attendees
Operating Beyond Competition
Competitive patent circumvention techniques using TRIZ with examples from LED lighting and other industries.

This workshop will focus on competitive patent circumvention strategies using Function Analysis and TRIZ. The participants will learn how to obtain "freedom to operate" through function modeling of the patent claims and applying trimming techniques. The approach will also enables the attendees to strengthen their own patents and use trends of engineering system evolution for developing a "patent firewall" of dependent claims around their IP. The case studies and examples include cases from LED industry.

The workshop's major learning points are:

• Competitive patent circumvention through trimming
• Competitive patent circumvention through substitution (Doctrine of Equivalents and Prosecution History Estoppel)
• Antidote Strategy
• Picket Fence Strategy (Trends of Engineering System Evolution)

Sergei Ikovenko, Prof. DDr. Director and Chief Specialist, Innovation Leadership Programs, Massachusetts Institute of Technology (MIT), USA

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Keynote | Sept. 27, 2012 | 15.15-15.45

The Future of Solid State Lighting in Europe
An overview of EU initiatives launched under the Digital Agenda for Europe in the area of Solid State Lighting.

On 15 December 2011 the European Commission as part of the Digital Agenda for Europe published the Green Paper "Lighting the Future", which addresses challenges for the wider uptake of LED-based solid-state lighting (SSL) in Europe and launched a public consultation on the topic that closed on 1 March 2012.
The presentation will report on the results of the open consultation and provide an overview of EU initiatives relevant for the faster deployment of SSL in Europe and for fostering the leading position of the European lighting industry.

The keynote will highlight:

• The role of LED-based lighting for achieving the Europe 2020 energy efficiency goals
• Challenges for the wider uptake of SSL and results of the open consultation
• The role of the European lighting sector
• European support in the area of SSL: from research and innovation to regional policy

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Michael Ziegler, Ph.D. Member of the Photonics Unit at the European Commission's General Directorate for Information Society and Media, Belgium

Keynote | Sept. 25, 2012 | 15.45-16.15

LED Lighting - From Revolution to Mainstream Summary of recent LED technology trends and strategies for future lighting system developments.

LED Lighting, which began as a revolution for a well established century old Lighting industry, has in just over 15 years evolved to a mainstream technology penetrating virtually every lighting segment. The intrinsic optical, electrical, and dimensional properties of LEDs result in a manifold of advantages in those various applications: energy saving, better optical design and properties, miniaturization, electronic driving and control.

Even more interesting is the road ahead: intelligent light sources, embedded lighting, new form factors not possible before and many other features create excitement amongst luminaire manufacturers, specifiers, light designers and other key players in the lighting industry.

The keynote will highlight:

• Latest developments in LED Lamps
• New approaches to key building blocks for luminaires
• Developments in intelligent lighting
• Underlying cost structure for key LED building blocks

Dr. Hans Nikol VP LED Technology Strategy, Philips Lighting,
The Netherlands

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Keynote | Sept. 25, 2012 | 16.15-16.45

Challenges and Opportunities of LED Technology in Lighting Projects
Demonstrating state-of-the-art technology for LED lighting designs using the example of a museum project.

Prof. Andreas Schulz,  DI Professor HAWK Hildesheim and CEO LichtKunstLicht AG, Member of the IALD Board of Directors, Germany

Chair: Dr. Paul Hartmann, Joanneum Research

Yole D�veloppement | 08.30-08.55
Chances and Challenges of the GaN-on-Si LED Technology
Sapphire is presently the major substrate/platform with more than 95% of the market. Essentially all LED makers are currently working on evaluating Si based solutions due to their potential cost benefits. It will be shown which challanges, like for instance, thermal expansion coefficient mismatch, light absorbtion at the typical emission wavelength of GaN LEDs, have to be overcome to finally become a serious option.

• Key-drivers & challenges
• Technology overview
• Cost potentials
• Associated business models

Pars Mukish, M.Sc.
Market and Technology Analyst for LED and Compound Semiconductors at Yole D�veloppement

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Bridgelux | 08.55-09.20
GaN-on-Si Technology to Create Cost Breakthroughs
New technologies focused on performance and high scale manufacturing capabilities will have to be developed to make future breakthroughs happen. GaN on Si is just such a breakthrough.

• LED array platforms vs. traditional light platforms
• Will the "Good is Good enough" evolution set in motion a shift in the character of the LED lighting market
• New technologies focusing on performance and high-scale manufacturing

Tom Van den Bussche, M.Eng.
Director Marketing EMEA and Global Director of Segment Marketing at Bridgelux

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Lynk Labs | 09.20-09.45
AC-LED Technology - A Niche Product or the Future of LED Lighting
Like most disruptively innovative concepts, AC LEDs have been treated with scepticism by much of the conventional technology fraternity. This presentation looks at the emerging AC LED market and identifies where the technology is likely to find a strong niche and why. The technical challenges to AC LED implementation will be discussed and some of the more promising solutions identified and qualified.

• Technical challenges of AC LED implementation
• Applications where AC LED technology is likely to find a strong niche
• AC LEDs and their role for cost down pressure

Bob Kottritsch, M.Sc.
Corporate Vice President of Lynk Labs Inc

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e:lumix | 09.45-10.10
Advanced LED Technologies for General Lighting Applications
LEDs have improved dramatically over the last few years but there are still limitations and hurdles to overcome. It will be shown how changes in the LED structure using alternative substrates and liquid phase epitaxy (LPE) processing can alter and improve LEDs. For instance, introduce a grid-load regulator in the chip-layers and improve thermal stability and efficacy

• Influences on LED structures during the liquid phase epitaxy (LPE) processing
• In-chip-protection - a grid-load regulator in chip-layers
• Driverless 230VAC applications
• Improved thermal stability and efficacy for reduced heat-output of LEDs

Thomas Zabel
Chief Executive Officer and Head of Technology at e:lumix AG

Chair: Dr. Nisa Khan, LED Lighting Technologies

Tridonic Jennersdorf | 11.15-11.40
Mechanisms of White Light Generation with Phosphors
The most important phosphor types for LED applications are the garnet, silicate and nitride types. Various mechanisms can affect the conversion efficiency of a phosphor and will be presented during the talk. Furthermore, fundamental physical limits of the conversion efficiency and the application of Quantum Dots in white light LED's will also be discussed.

• The most important phosphor classes
• Light conversion efficiency - physical limits
• Various white light generation techniques
• Basics of Quantum Dots

Lena Pilz, Dipl.-Ing.
Scientist for LED Technology at Tridonic Jennersdorf GmbH

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Technical University of Vienna | 11.40-12.05
Thermal Issues of Phosphor Converted LEDs
The reliability and long-term stability of solid-state lighting devices strongly depend on appropriate thermal management. Thermal issues of the color conversion elements of phosphor converted LEDs will be shown in theory and praxis.

• Temperature distribution within color conversion elements
• Heat removal and the temperature distribution within the LED package
• Conversion element temperature induced color deviations
• Comparison of measurements and thermal simulations

Prof. Johannes Nicolics,  Ph.D.
Professor at the Vienna University of Technology - Head of the Department of Applied Electronics Materials at the Institute of Sensor and Actuator Systems

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Intematix | 12.05-12.30
New and Remote Phosphor Technologies for Future Solid-State Lighting Designs
New phosphor materials have allowed LEDs in general lighting to match the light quality of traditional sources. The focus of the discussion will be how new phosphor and remote phosphor technologies are enabling luminaire manufacturers to break ground in developing new innovative designs to meet market demands.

• Remote phosphor systems to increase system performance up to 30%
• Phosphor blends to create CRI > 95
• Red phosphor with higher temperature stability

David Nauth, MBO
Intematix Inc. - Director of Sales, Northern Europe and Benelux

Chair: Prof. Dr. Paola Belloni, FH Furtwangen

Zett Optics | 14.00-14.25
Optical Design Challenges when Using Multi-Chip or Single-Bin LEDs
Combining different colored chips inside of one multi-chip array allows the production of single bin LEDs. Problems arising from the use of either single bin or multi-chip LEDs as well as possibilities to overcome some of these problems will be disclosed.

• Spectral filtering problems with single-bin LEDs
• Spatial color problems with multi-chip LEDs
• Spatial distribution problems with multi-chip LEDs
• Suggestions in using single-bin or multi chip LEDs

Dr. Alexander Leis, Ing. Dipl.-Phys.
Optic Designer at Zett Optics Gmbh, Braunschweig

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ALANOD | 14.25-14.50
Intelligent Reflector Technology for Glare Reduced LED Luminaires
If LED-luminaires want to have  long term success in office lighting they have to meet the established general quality criteria for that kind of lighting, such as an optimised light distribution or glare control in relation to maximum efficiency. The presentation will deal with the demands of ergonomic office lighting and how to fulfill the demands with a linear LED-light-source.

• Demands of ergonomic office lighting
• Optimised light distribution in LED luminaires
• Glare control in relation to maximum efficiency
• Intelligent reflector technology

Dr. Hans Laschefski,  Ing.
Consultant Business Development MIRO - ALANOD GmbH & Co. KG

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OEC | 14.50-15.15
Tolerancing Tailored Freeform Optics for Illumination Systems
Deviations of optical elements and assembly tolerances have great impact on the optical efficiency and light quality of LED luminaires. A Monte-Carlo tolerancing method based on  realistic modelling that allows well balanced specifications for production to be defined will be shown.

• Monte-Carlo tolerancing for illumination systems
• Automated tolerancing of freeform optics
• Shape deviations from measurement of parts
• Flexible representation of shape and assembly deviations

Angelika Hofmann, Ph.D.
Optical Design of Imaging and Illumination Optics,  Freeform Optics Specialist, OEC AG

Chair: DI Stefan Zudrell-Koch, Dialog Semiconductors

International Rectifier | 16.20-16.45
LED Driver Designs to Overcome the Costs vs. Performance Dilemma
LED converter circuit types for the LED general lighting market are always a tradeoff between cost and performance. Performance requirements will be outlined and then several different circuit approaches will be talked about. It will be discussed where PFC is necessary and how to integrate this adding the least cost.

• Overview of LED driver topologies
• TRIAC dimmer compatibility
• Cost, performance and efficiency tradeoffs
• Future trends of LED driver designs

Harald Reichert, DI(FH)
Application Engineer, International Rectifier

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RECOM | 16.45-17.10
Understanding the Challenges and Complexity of LED Dimming Technology
TRIAC dimming offers new challenges and the dimming range is an often misunderstood concept that is dependent on many factors. Why dimming causes difficulties will be explained and some practical advice on choosing the optimum driver / dimmer combination will be given.

• Fundamentals of LED dimming: Current vs. PWM
• Introduction to Phase-Angle Dimming (TRIAC dimming)
• Dimming Range and Human Perception
• Dimmer/Driver Compatibility

Steve Roberts, M.Sc.  Technical Director for the RECOM group at Gmunden, Austria

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TAOS | 17.10-17.35
Application of Color-Managed Ambient Light Sensor for LED Lighting Systems
LED replacement lighting will provide about 50% reduction in energy consumption. These environments can benefit from an additional 30% or more in energy reduction simply by exploiting basic daylight harvesting. Available approaches and benefits of fully integrated intelligent color-managed ambient light sensor and driver technology for this task will be discussed.

• Energy spectrums of different light sources
• Determination of the actual amount of available ambient light
• Optimized daylight harvesting
• Color-managed ambient light sensor and driver technology

Sajol Ghoshal, M.Sc.
Director Sensor Driven Lighting, AMS-TAOS & Director Office of CTO for Akros Silicon

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MAZeT | 17.35-18.00
Optimization of Absolute Accuracy for True Color Sensors in a Closed Control Loop
It is well known that LEDs have a drift of peak wavelength and intensity. This leads to various shifts of chromaticity coordinates and intensity depending on the LED type, which could be measured and controlled by the true color sensors. This presentation illustrates an optimized calibration method, with which those lamps are measured with an accuracy even better than the human eye .

• Optimized calibration for true color sensors
• High-accurate LED measurements
• Constant luminous color over life-time
• Basis for high CRI closed control loop

Fredrik Hailer, Dipl.-Ing. (FH)
Application Engineer for Color and Spectral Sensors at MAZeT GmbH

Chair: Dr. G�nther Sejkora, Kompetenzzentrum Licht

Swarflex | 08.30-08.55
Glass - A Viable Alternative Optical Material for LED Applications
LEDs are rapidly improving regarding reliability, lifetime and lumen output.  Therefore lighting systems that keep up with the requirements of today's high power LEDs are required. Latest insights on how to reach an optimum level of efficiency and the role of glass in optical designs for glare-free lighting solutions will be given.

• How to reach an optimum level of efficiency in LED lighting solutions applying glass optics
• The role of optical designs in combination with today's high power LEDs
• Significance and realization of glare-free lighting solutions
• Advantages of glass and surface finishing options for the application with LEDs

Harald Reisigl, Dipl.-Ing.(FH) Mag.
Director of Optical Glass Elements and System at Swareflex

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TOWA Europe | 08.55-09.20
Compression and Transfer Molding Solutions for HB LED Optics
Driven by the substantial changes on high density IC packages and the decreasing chip size over the past 10 years, a new molding technology, Compression Molding, has been developed. The presentation will describe this process for HB-LED silicon lenses on substrates, for high reliability reflectors and the cutting process for singulation of the lenses on a substrate.

• Molding technologies for high density IC packages
• Transfer molding vs. compression molding
• Wide process window for significant cost reduction
• Challenges of the singulation process

Huub Claassen
Managing Director of TOWA Europe GmbH

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Heraeus 09.20-09.45
Stamped Circuit Board Technology as a Solution for SSL Thermal Management
The Stamped Circuit Board (SCB) technology combines structured metal and polymer foils (Multilayer: Metal-Plastic-Metal layers also an option) for the assembly of substrates for LEDs. Based on thermal simulations and investigations the influence of different designs and  materials will be explained.

• Alternative substrate technology
• Customized solutions
• New silver based surfaces
• "Reel to Reel" process

Andreas Steffen Klein, Dipl.-Ing. (FH)
Research & Development Project Manager in the Technology Centre of the Engineered Materials Division at Heraeus Materials Technology

Chair: Prof. Dr. Johannes Edlinger, FH Vorarlberg

BAG electronics Group | 10.30-10.55
Zhaga Compatible Light Engines - Requirements, Design & Compliance

The lighting industry has so far lacked clear standards to ensure the interchangeability of LED modules. If and how Zhaga standards help to enhance interchangeability, to promote innovation, to lower cost and to reduce risk will be discussed and demonstrated.

• Introduction into the Zhaga standard specifications
• How interchangeability promotes innovation
• Concepts and explanation of photometrical interface specification

Dipl.-Phys. Guido Nattkemper
Director Product Management LED at BAG electronics and working group leader within the Zhaga consortium

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opsira | 10.55-11.20
LED Measurement to Obtain Polychromatic Raydata and their Value for Simulations
Many LEDs exhibit spectral distributions that vary depending on the viewing angle and depending on the location on the chip. The importance of a polychromatic rayset for proper simulation of sophisticated LED based luminaires and how to gain data for such a rayset using a near-field goniometer system will be demonstrated.

• Polychromatic raysets of LEDs
• Near-field goniometer systems
• Luminance camera systems combined with spectroradiometer
• Colorimetric modeling and simulation

Dr. Dirk Hansen, M.Sc.
Development of Goniometric Measurement Systems and Generation of Polychromatic Raydata

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Instrument Systems | 11.20-11.45
Measurement of LED Light Sources in Respect to Photobiological Safety Standards

LEDs used in lamps and lamp systems for general lighting purposes are typically not emitting radiation in the UV or the IR range of the spectrum. Therefore, only one of the photobiological hazards mentioned in the IEC62471 standard remains critical - the blue light retinal hazard. Measurement, critical limits and standards of photobiological safety for lamps in respect to LEDs will be discussed.

• Photobiological hazards for the human skin and eye
• Standardisation of photobiological safety for lamps and lamp systems
• Critical limits for the identified hazards
• Measurement of optical radiation in regards to determining potential threats
• Evaluation of the blue light retinal hazard of LEDs in general lighting systems

Peter Laepple
Manager Solutions Instrument Systems Optische Messtechnik GmbH

Chair: Pars Mukish, M.Sc., Yole D�veloppement

Cree | 13.00-13.25
Fundamentals of LED System Design to Avoid Mistakes
Designing and building a successful LED product requires knowledge and skill in several technical aspects. The fundamentals of designing and building a robust and reliable LED system will be examined and some of the more common mistakes that engineers, designers and product developers should avoid will be discussed.

• SSL luminaire system design
• SSL reliability
• Thermal management
• Photometric performance of SSL products

Shawn P Keeney, B.Sc.
Applications Engineer at Cree, Inc. with focus on TEMPO Testing Services Program and Technical Support

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Rood Microtec | 13.25-13.50
Failure Analysis and Prevention for Improved LED-Lamp Lifetime 
There are a lot of reasons LED lamps are not reaching the promised and expected lifetime. The presentation will show various general examples from the real world and in practice and will provide a relevant precaution strategy and give ideas for corrective action to improve the overall lifetime and reliability of the lighting system.

• Reasons for not reaching the expected lifetime
• Various general examples out of the practice
• Precaution strategy and corrective actions to improve lifetime and reliability
• Provide experience to users for faster and cheaper development of LED systems

Reinhard Pusch, Dipl.-Ing.
CSO and Vice President RoodMicrotec GmbH

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Osram Opto Semiconductors | 13.50-14.15
Reliability Issues of LEDs and LED Based Luminaries for Outdoor Applications
In outdoor applications, humid environments, sulphur contaminations or temperature cycles cause stress to LED lighting systems that may reduce lifetime. It will be discussed how to limit these risks using proper package design, suitable materials and material combinations.

• Outdoor reliability for LED based luminaries
• Humid environments
• Sulphur contaminations
• Temperature cycles

Janick Ihringer, M.Sc.
Application Engineer of Osram OS in Regensburg, responsible for Outdoor Lighting and Reliability

Chair: Ing. Andreas Danler, Bartenbach

Technical University of Illmenau | 14.45-15.10
Influence of the Light Spectrum on Visual Perception in Street Lighting Applications
The design of street lighting systems is primarily based on the average luminance level. Criteria like the color of light and color rendering are mentioned primarily due to aesthetic issues without respect to possible affects on object detection. Most recent results of an investigation on the spectral influence on human perception under street lighting conditions will be presented.

• Development and test of an intelligent-adaptive multi-chip LED based street lighting
• Spectral influence on visual tasks under street lighting conditions
• Effect of light spectrum on human perception under normal and poor visual conditions
• Effects on object detection

Andreas Ueberschaer, Dipl.-Ing.
Research Associate at the Technical University of Ilmenau, Department of Lighting Engineering

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LEDiL | 15.10-15.35
Design Process and Optics Selection for Roadway Lighting Applications
Roadway lighting applications are unique as the target illumination area is often offset from the light source. Optical needs should be defined at an early stage of design.
It will be shown why that can decrease development time, minimize power consumption, reduce system cost and improve overall reliability.

• Roadway Lighting Presents Unique Design Challenges
• Requirements Extend Beyond Optical Considerations
• Asymmetric Optics Offer Design Flexibility
• Luminaire Performance Relates to Early Optics Selection

Bob Derringer
Director of Business Development, Development of Readily-Available Optics Engineering for Key Markets

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Politecnico di Milano Laboratorio Luce | 15.35-16.00
Analysis of Three Projects to Optimize the Design Process of Street Lights
Nowadays, the design of lighting fixtures is completely changing. On-going technological innovations of LEDs' components and performance, a wider amount of knowledge required, more stakeholders involved, describe a general situation of design complexity. OLA, BUTTERFLY, PLUS describe the experimental design approach applied for a new design strategy from the idea to the prototype testing and represent  the fast evolution of LEDs.

• State of the Art of the on-going evolution of LED street lighting projects
• Practice-based design method to manage the complexity of LED lighting fixture projects
• Simulation and measurement techniques in order to check LED features, validate hypotheses and define alternatives
• Definition of a design strategy toward efficient, sustainable and performing lighting fixtures

Daria Casciani, Dip. In.D.A.Co.
Collaborator at the Laboratorio Luce Politecnico di Milano