Smart Lighting + IoT | Usability | LpR Article | Resources | Software | Mar 22, 2017

Enhancing the LED Experience - UI & UX as Success Factors for IoT Based Lighting Controls

Enhancing the LED Experience - UI & UX as Success Factors for IoT Based Lighting Controls As LED lighting systems become part of the Internet of Things, getting the interface right is essential if all of the potential benefits are to be realized. Karl Jónsson and Christian Moormann of Tridonic explain why UI and UX are crucial for the acceptance of the “Internet of Things”, give design hints and describe what this type of user interface that accommodates scalability, simplicity and ease of handling could look like. The authors also discuss examples based on a system Tridonic pre-launched in 2016. Read more »

Resources | LpR Article | Tech-Talks Bregenz | Light Conversion | Mar 08, 2017

Tech-Talks BREGENZ - Dr. Rubén D. Costa, Group Leader, University of Erlangen-Nuremberg

Tech-Talks BREGENZ - Dr. Rubén D. Costa, Group Leader, University of Erlangen-Nuremberg Light quality and costs of LED systems remain an important topic even though big improvements have been made. New approaches are always welcome and stir up hope. It was exactly a year ago that LED professional published the article by Dr. Rubén D. Costa, Liebig Group Leader at the University of Erlangen-Nuremberg, about his amazing new „Bio-Hybrid“ white LED approach. At LpS 2016 his presentation on the latest research results and improvements also won him the LpS 2016 Scientific Award. Consequently, we just had to invite him to a Tech-Talk Bregenz! In the interview below he gives us some interesting background information about why he started the project, how it works and what he expects in the future. He also gives us his views on LEDs and lighting in general. Read more »

Commentary | Smart Lighting + IoT | Resources | LpR Article | Feb 28, 2017

Lighting Up Smart Cities, Dr. Wu Chou, Huawei

Lighting Up Smart Cities, Dr. Wu Chou, Huawei Although streetlights have been associated with cities for more than a thousand years, they are rarely considered for functions other than luminary purposes. One of the distinct features of streetlights is their geographic location. In particular, streetlights follow the roads and streets that are the arteries of the city, and at night they outline the city so it can be seen from many miles away. Read more »

LpR Article | Smart Lighting + IoT | Event-Reports | Sustainability | Human Centric Lighting | Manufacturing | Resources | Feb 15, 2017

Swiss Photonics Workshop on Intelligent Efficient Solid State Lighting

Swiss Photonics Workshop on Intelligent Efficient Solid State Lighting Swiss Photonics held their Swiss Solid State Lighting Workshop in the Pantheon at Muttenz near Basel on December 12th of last year. The ambience of the automobile museum was perfect! The program covered a broad range of topics including Human Centric Lighting, Internet of Things and the results of the LASSIE project (Large Area Solid State Lighting Intelligent Efficient: A 7th Framework Program for Research and Technological Development). In the following article, Arno Grabher-Meyer, Editor-in-Chief at LED professional, summarizes the highlights. Read more »

Resources | LpR Article | Event-Reports | Business | Technologies | Applications | Feb 08, 2017

LuxLive and SILE Sharpen Focus on End-Users

LuxLive and SILE Sharpen Focus on End-Users On November 23rd and 24th, as in previous years, LuxLive was held in the Excel Center close to London’s City Airport. This year, for the second time since the merger of Revo Media and Pennwell, LuxLive and Strategies in Light Europe were co-located. Arno Grabher-Meyer, Editor-in-Chief at LED professional, summarizes his impressions of the event, picking out the more technical oriented lectures held in the different "arenas". Read more »

Trends | Smart Lighting + IoT | Resources | LpR Article | Jan 26, 2017

Smart Lighting Market and Technology Trends

Smart Lighting Market and Technology Trends Intelligent lighting technology that enables its users to control lighting through connected devices such as smart phones or remote controls is a big topic in the industry. A new report sheds light on different aspects of this business including drivers, restraints and opportunities. Jasmine Hinduja, Research Analyst at The Insight Partners, summarizes the major findings and how the trend to intelligent systems affects the companies regarding technology skills and strategies. Read more »

Trends | Smart Lighting + IoT | Resources | LpR Article | Jan 19, 2017

Flicker: Standards and Test Methods

Flicker: Standards and Test Methods Much has been written and said about Temporal Light Artifacts (TLAs). What is essential about TLAs is that they consist of flicker and/or stroboscopic effects induced by a light stimulus whose luminance or spectral distribution fluctuates with time and causes undesired changes in visual perception for an observer in a certain environment. Walter Parmiami, Senior Engineer at UL International Italia S.r.l., discusses the current status of regulations and measurement standards and proposes a certification to help manufacturers to generate user confidence, and consumers and specifiers to find the right product for an application Read more »

Resources | LpR Article | Technologies | Optics | Jan 12, 2017

Structured Glass Light Guides for Efficient Lighting

Structured Glass Light Guides for Efficient Lighting Glass injection molding technology (GIMT) for precision glass optics is a relatively new manufacturing technology. This expertise allows for producing efficient glass optics for LED lighting applications with special properties like undercut geometry or mounting flanges. A lot of progress has been made since it was introduced. Christian Passlick, Optical Engineer at Auer Lighting, shows how this improved technology supports making state-of-the-art light mixing structures for RGB/RGBW LED systems. Read more »

Resources | LpR Article | Technologies | Manufacturing | LEDs | CoB LEDs | Jan 05, 2017

Comparing New Dielectric Materials for Chip-on-Board LED Packages

Comparing New Dielectric Materials for Chip-on-Board LED Packages Thermal management is still one of the most challenging issues in solid state lighting. With the increased application of COB LED technology, the portion of the dielectric material on the overall thermal resistance has become an important topic. Different solutions and new materials have been proposed over the last few years. Hui Zhang, Max Wagner, and Prof. Tran Quoc Khanh from the Laboratory of Lighting Technology at the Technische Universität Darmstadt compared different materials and present the results of their extensive research. Read more »

Event Post Show Report | LpR Article | Dec 28, 2016

LpS Event: A Perfect Platform for New Ideas and Innovations

LpS Event: A Perfect Platform for New Ideas and Innovations Like in any “Light + Building year”, there is always the question of which, if any, other shows one should attend in Europe. The visitors to the LpS 2016 knew right from the start that they had made the right decision with Bregenz. As always, the show attracted attendees, exhibitors and visitors from all over the world. Arno Grabher-Meyer, Editor-in-Chief at LED professional summarizes the highlights and shows how the newly introduced program points were received. Read more »

LpR Article | Research | Dec 22, 2016

The Perspective of Bio-Hybrid White Light-Emitting Diodes Based on Rubber-Like Down- Converting Coatings

The Perspective of Bio-Hybrid White Light-Emitting Diodes Based on Rubber-Like Down- Converting Coatings At first, white LED technology seems to be mature. But in truth, the technology is still far from being perfect and research on all LED materials and components is ongoing. At the LpS 2016 the research of Rubén D. Costa, Lukas Niklaus, Katharina Weber and Prof. Uwe Sonnewald from the University of Erlangen-Nuremberg (FAU) was honored with the LED professional Scientific Award. These authors investigated the use of organic light conversion materials for white LEDs. Their research shows that these bio-hybrid white LEDs could lower costs and improve light quality. The article describes the current status of the research and future perspectives. Read more »

LpR Article | Innovation | Dec 15, 2016

On-Chip Beam Forming Optics Paves the Way for New Luminaire Designs

On-Chip Beam Forming Optics Paves the Way for New Luminaire Designs An LED luminaire’s optical system usually consists of primary and secondary optics. This concept always causes a trade-off between light quality, system size, efficiency and light distribution. New concepts to make secondary optics obsolete have already been researched. Paul Drosihn, Head of Modular Products, and Samir Mezouari, Optics & Lighting Design Specialist at Plessey Semiconductors present the first of its kind chip scale beam forming technology, StellarTM. They explain how it works and how it helps to overcome the limitations of traditional optical solutions for LED lighting. Read more »

Tech-Talks Bregenz | Dec 08, 2016

Tech-Talks BREGENZ - Prof. Christian Cajochen, Univ. Basel, Head of Center of Chronobiology

Tech-Talks BREGENZ - Prof. Christian Cajochen, Univ. Basel, Head of Center of Chronobiology Human Centric Lighting has become a catchphrase used by industry and the press. But the press has also started reporting that research emphasizes the danger of LED lighting in connection to our health and has coined the term “Blue Light Hazard”. These claims have caused confusion amongst end users and throughout the lighting community. Prof. Christian Cajochen, Head of the Centre for Chronobiology at the University of Basel - an expert on this topic - held a lecture at the LpS 2016 entitled “Light Beyond Vision”. Afterwards, LED professional seized the opportunity to talk to him personally and get some in-depth information about the risks and benefits of LED lighting. Read more »

LpR Article | Technologies | Nov 02, 2016

Optical Lithography Method for Advanced Light Extraction in LEDs

Optical Lithography Method for Advanced Light Extraction in LEDs Objective material selection for various target applications is key for successful product development. Efficient light extraction features are crucial for highly efficient LEDs. Thomas Uhrmann and Harun Solak, et.al* from EV Group and Eulitha AG will demonstrate a novel lithography method, PHABLE™, that enables the printing of sub-μm patterns in a non-contact, proximity process. Read more »

LpR Article | Oct 26, 2016

Handheld Photometry Supports LED Lighting Design

Handheld Photometry Supports LED Lighting Design With SSL new dimensions were introduced to light measurement, especially concerning handheld light measurement tools. Norbert Harkam, General Manager at SalesLink GmbH, a Representative of UPRtek, explains what criteria have to be considered and what the requirements of a handheld photometer are. Read more »

LpR Article | Oct 24, 2016

LEDs Reveal Paintings Hidden in Paintings

LEDs Reveal Paintings Hidden in Paintings Artists are often early adopters of new technologies and new solutions and methods that bring art to a new level. For fine arts artist, light and their material are the two major elements to play with. It’s no wonder that LED lighting has become an important element for them. The artist, Clint Eccher, and Arno Grabher-Meyer from LED professional show how LED lighting is used to transform static paintings into some of the most advanced paintings in the world, in dynamic, “living” pieces that transform their appearance with LED light. Clint Eccher's work, how it is done, and the role of LED technology will be explained. Read more »

Health + Environment | LpR Article | Oct 20, 2016

Botanical Light Pollution - Red is the New Blue

Botanical Light Pollution - Red is the New Blue In the beginning, the industry argued that LED lighting could help reduce light pollution. Meanwhile, various organizations claim the opposite effect is true and often sight light color as an issue. The opinions of different groups are frequently quite the contrary to those of other groups. Ian Ashdown, FIES Chief Scientist at byHeart Consultants & Lighting Analysts, demonstrates and discusses the negative effects of light pollution through LED lights and how different light sources affect vegetation. Read more »

LpR Article | Oct 17, 2016

How to Design with LEDs: Concurrent Engineering Yields Fully Optimized Lighting Systems

How to Design with LEDs: Concurrent Engineering Yields Fully Optimized Lighting Systems LEDs are often viewed as a replacement for other light sources. The right starting point for designing an appropriate replacement is crucial to the result. Brian S. Jasenak, Optical and Process Engineer at Kopp Glass, describes a concurrent engineering approach that optimizes the optics and other system components, and may help to reduce the number of LEDs needed as well as the overall cost of the LED lighting fixture. Read more »

LpR Article | Technologies | Oct 17, 2016

High-Index Nanocrystals - Key to Next Generation Advancements in Lighting

High-Index Nanocrystals - Key to Next Generation Advancements in Lighting Solid-State Lighting is destined to be a next generation lighting option. LEDs have already entered main stream applications and OLED technology has advanced greatly in the past few years in terms of efficacy and performance. Both technologies need to continue to improve performance to achieve high market acceptance. Dr. Gregory Cooper, Chief Technology Officer and Founder of Pixelligent Technologies LLC, illustrates how LED and OLED technology can advance to the next level by incorporating nanomaterials into existing packaging. Read more »

LpR Article | Oct 13, 2016

Easing Lighting System Design with Online Tools

Easing Lighting System Design with Online Tools The technical intricacies of an LED lighting system design can be quite complicated. The interdependencies of design parameters such as light source flux, efficacy, lumen maintenance, drive current, series/parallel light source layout, compatible optics, compatible drivers, thermal dissipation and others make the calculation of system performance a laborious process if performed manually. One simple change in one parameter could potentially force the lighting designer to consult the datasheet for every other component considered in the design in order to calculate the impact on the system as a whole. Patrick Durand, Worldwide Technical Director, Future Lighting Solutions demonstrates the capabilities of modern online tools to solve these problems giving a typical application example based on the Future Lighting System Creator (LSC). Read more »

LpR Article | Technologies | Oct 10, 2016

Technologies for Engineering an LED Light Closest to Sunlight

Technologies for Engineering an LED Light Closest to Sunlight TRI-R is a next-generation LED light source made possible by Toshiba Materials technology and commercialization together with TOL STUDIO. Using natural light that recreates the solar spectrum, TRI-R suppresses glare, prevents the loss of object color, and gives fresher, clearer expression to textures and details. Based on professional research examining the relationship light has with humans and the environment, this is illumination technology that provides the world surrounding us with the true and real value of light. Masahiko Yamakawa, Senior Specialist of Toshiba Materials Co.LTD., presents how this technology was developed and applied in some projects. Read more »

LpR Article | Oct 07, 2016

Lighting Fabrics - A New Approach for Flexible Light Sources

Lighting Fabrics - A New Approach for Flexible Light Sources Different groups from the lighting business have been dreaming of truly flexible light sources for a long time. OLEDs are being promoted as the solution of the future but there are other solutions already on the market. Managing Director R&D at Carpetlight GmbH, Mr. Till Sadlowski, takes a look at the common history of light and fabrics, the evolution of flexible circuity and the latest development in form free scalable light sources. Read more »

LpR Article | Technologies | Oct 07, 2016

MOCVD Platform for Cost-Effective Production of GaN-based HB LEDs

MOCVD Platform for Cost-Effective Production of GaN-based HB LEDs GaN-based blue and ultraviolet light emitting diodes (LEDs) are steadily becoming more widely used in solid-state lighting (SSL) applications [1-3]. Enabling dramatic energy savings when compared to contemporary incandescent bulbs and fluorescent lamps, these high-brightness LEDs (HB-LEDs) have a market potential in the billions of dollars. Yole Development estimates that by 2017, the market for LEDs will be approximately $75 billion [4, 5]. Shiping Guo, the Senior Technology Director of Advanced Micro-Fabrication Equipment Inc. presents a new approach to support this goal with a cost effective MOCVD solution for HB-GaN LED manufacturing. Read more »

Tech-Talks Bregenz | Oct 03, 2016

Tech-Talks BREGENZ - Sebastian Huelck, Director Lighting, EBV Elektronik

Tech-Talks BREGENZ - Sebastian Huelck, Director Lighting, EBV Elektronik Solid State Lighting has not only changed the way that light is generated but also how areas or objects are illuminated. It has changed the whole industry and business. Sebastian Huelck, Director of Segment Lighting at EBV Elektronik GmbH & Co. KG, discussed these changes and the new requirements for modern distribution with Siegfried Luger and Dr. Guenther Sejkora. He explained the transition of distributors from pure logistic specialists to one-stop shops and full service providers, and commented on regional differences. He finished off by giving insights into the future projects of the company. Read more »

LpR Article | Technologies | Sep 30, 2016

OLED Technology in Lighting Applications

OLED Technology in Lighting Applications Prototypes and niche applications with OLEDs for lighting have been demonstrated over the past few years. Now there are indications that OLED technology is ready for mass production or at least will be ready very soon. Franco Musiari, Technology Specialist at ASSODEL analyzed the current status and future perspectives of OLED technology. Read more »

LpR Article | Sep 23, 2016

Natural Design for Heat Sinks

Natural Design for Heat Sinks The luminous flux of LEDs decreases with the rise of the operating temperature. Therefore the dissipation of the heat is, aside from the efficiency of the LED chip itself, an essential part in the development of efficient LED systems. Christian Herbold and Cornelius Neumann from the Light Technology Institute at the Karlsruhe Institute of Technology analyzed natural inspired shapes and show an approach to heat sinks that combine high thermal performance with a high aesthetic value. Read more »

LpR Article | Technologies | Sep 12, 2016

LED and Lens Degradation Through Volatile Organic Compounds

LED and Lens Degradation Through Volatile Organic Compounds In general, LEDs are very resistant light sources. Nevertheless, glues, conformal coatings, o-rings, gaskets, and potting compounds, all materials that are frequently used in the construction of LED based luminaires or lamps and often contain volatile organic compounds (VOCs) may have a negative impact on performance, reliability and lifetime. Edward Steinke, application engineer at Cree, explains the set of problems and how to prevent these issues based on Cree’s products, using their test kit components, as well as components for lamp and luminaire applications. Read more »

LpR Article | Research

Der Lichtpeter, Peter Erwin on Flicker Beyond Perception Limits - A Summary of Lesser Known Research Results

Well, our opinions join quite well. How about to have the CFD by Der Lichtpeter as the first really eligible method to measure light modulation [...] Read more »

LpR Article | Research

Gyula Major on Flicker Beyond Perception Limits - A Summary of Lesser Known Research Results

The article is astonishingly good. I’d like to make only one comment. It was mentioned in the introduction “...for high quality lighting very likely a [...] Read more »

LpR Article | Sep 01, 2016

Discomfort Glare Perception of Non-Uniform Light Sources in an Office Setting

Discomfort Glare Perception of Non-Uniform Light Sources in an Office Setting LED based luminaires with different luminance patterns and recently, with increasingly non-uniform luminance patterns are becoming mainstream. This trend makes discomfort due to glare an important topic. Based on an office setting and the comparison of results from three different regions, L. M. Geerdinck, J. R. Van Gheluwe and M.C.J.M. Vissenberg from Philips Research have reviewed the currently used formulae to predict discomfort glare to ascertain if they are still valid. Read more »

EDITORIAL

Georg Bechter Licht Introduces CERA 28 - Profound Radiance, Artistic, Handmade, Fragile, with Velvety Light

Georg Bechter Licht Introduces CERA 28 - Profound Radiance, Artistic, Handmade, Fragile, with Velvety Light With the new CERA 28 product line, Georg Bechter Licht has a porcelain luminaire that shines like a light-ball, velvety with a deep and brilliant light. Handmade in the Viennese factory of Hermann Seiser, each luminaire is unique. Learn more about this special story of creation: Read more »