Resources | Tech-Talks Bregenz | Lighting Design | Health + Environment | Quality | May 11, 2020

Tech-Talks BREGENZ - Prof. Ruairí O'Brien, Founder of Ruairí O'Brien Lighting Design

Tech-Talks BREGENZ - Prof. Ruairí O'Brien, Founder of Ruairí O'Brien Lighting Design Ruairí O'Brien, associate professor and head of the Architecture and Visual design department at the German University in Cairo and CEO of Ruairí O'Brien. Architektur. Licht Raumkunst, surprised and delighted the audience with his lecture at LpS 2016 when he talked about allowing darkness. He expressed the same sentiments in a caption for a figure in the proceedings booklet: "The future in Dresden is not lighting excess - the future is Re-Darkness with intelligent SSL concepts." This year, Ruairí held two lectures at TiL in which he emphasized how important a thorough application of light is in respect to culture, ethics, and environment. In addition to his work, these interesting statements made it made a Tech-Talk Bregenz with him a top priority. Read more »

Resources | Commentary | Smart Lighting + IoT | Health + Wellbeing | May 07, 2020

Personal Lighting Profiles Might Be the Key to Creating a Natural "Work Light Balance"

Personal Lighting Profiles Might Be the Key to Creating a Natural "Work Light Balance" Commentary from LpR 76: Henrik Clausen has been involved in lighting for over 30 years in both commercial and academic positions. In 1996, he became the Managing Director of Fagerhult Lighting in Denmark, and held that position until 2004, when he founded the Fagerhult Lighting Academy. In 2015 he also became Head of Research for Fagerhult. He holds a position as professor in Lighting Design at AAU in Copenhagen. He guest lectures at various Universities around the world. He speaks worldwide, primarily addressing the human and emotional aspects of light and lighting design. Read more »

Resources | Commentary | Health + Environment | Quality | May 04, 2020

Providing Better Light Should Still be the Focus of the SSL Industry

Providing Better Light Should Still be the Focus of the SSL Industry Commentary from LpR 75: As President of Bardsley Consulting, Norman advises industry, government and academia on solid-state lighting, flat panel displays and energy efficiency, with special emphasis on diffuse lighting and organic electronics. He is a member of the Technical Advisory Team for the Solid-State Lighting Program of the US Department of Energy. Dr. Bardsley also acts as Chief Analyst for the International Solid-State Lighting Alliance (ISA) and is a member of the UNEP Expert Task Force on LED Lighting and Controls. Read more »

Resources | Tech-Talks Bregenz | Wilfried Kramb | Lighting Design | May 04, 2020

Tech-Talks BREGENZ - Wilfried Kramb, Interior & Lighting Designer, a∙g Licht

Tech-Talks BREGENZ - Wilfried Kramb, Interior & Lighting Designer, a∙g Licht TTB from LpR 75: The value of lighting design and light planning has always been underestimated, despite it becoming more important with the rise of Solid-State-Lighting. This is a fact that the public doesn't realize, even though the industry does. Digitalization, compared with the special properties of LED lighting and the aim of the lighting industry to establish their IoT hubs, is a new challenge. This is even more apparent when trying to integrate light sources directly in building structures. Responsibilities and tasks are no longer clearly separated between the different disciplines of architect, lighting designer, IT planner and electro planner. Guenther Sejkora and Arno Grabher-Meyer talked with Wilfried Kramb, owner and CEO of a·g Licht, about these tendencies and topic. Read more »

Resources | Commentary | UV | Disinfection | Feb 12, 2020

Selecting the UV LED Wavelength for Purification Applications

Selecting the UV LED Wavelength for Purification Applications Patrick Durand is the Worldwide Technical Director at Future Lighting Solutions (FLS) with over 15 years of experience in the solid state lighting industry. Patrick leads the FLS Technical Marketing teams and FLS laboratory teams located in multiple regions around the world with the objective of providing world-class support to lighting OEMs in developing luminaires with the latest SSL technology from the light source to the complete system incorporating the LED driver, optic, thermal management and intelligent control solutions. Read more »

Resources | LpR Article | Drivers | Automation | Special Applications | Feb 10, 2020

LED Driver for High Power Machine Vision Flash

LED Driver for High Power Machine Vision Flash Automation is nothing new and its demands are rapidly increasing, either in production or inspection. More sensors are used and many are based on direct or reflected light detection. Some work in the visible range and others work in the non-visible spectrum of light. LED lighting has become the standard in most applications as the solid-state light source offers numerous advantages over other lighting technologies. However, the LED lighting system is only as good as the peripheral components and LED drivers are one key element in many applications. Keith Szolusha, LED driver applications manager and Kyle Lawrence, associate applications engineer, identified the challenges for machine vision flash applications and propose a solution example with Analog Devices' LT3932 high speed LED driver. Read more »

Resources | LpR Article | Technologies | UV | Horticulture | Feb 10, 2020

Transparent Material Considerations for UV Optics in Horticultural Lighting Applications

Transparent Material Considerations for UV Optics in Horticultural Lighting Applications Advancements in UV LED technology have begun changing the horticultural lighting landscape. Research is still ongoing to discover the extent of benefits and best practices of using UV light in horticulture. Using optics in tandem with UV LED light systems can help reach performance goals and optimize growing. Although there are several UV- transmitting materials available, not all are equivalent or able to meet the requirements for UV applications. Justine Galbraith, glass engineer, and Sharayah Follett, market development manager at Kopp Glass, Inc. discuss the performance considerations of various UV-transmitting materials and how application challenges are addressed by integrating optical elements. Read more »

Resources | LpR Article | Research | LEDs | Manufacturing | Feb 05, 2020

Hermetic Polymer-Free White LEDs for Harsh Environments

Hermetic Polymer-Free White LEDs for Harsh Environments LpR 73 Article, page 42: AlGaInN-based white LED can easily achieve lifetimes of up to 100,000 h depending on junction temperature and current density. However, state of the art silicone encapsulated LEDs with powder-based phosphors reveal a strong dependence of field lifetimes on environmental conditions such as humidity, corrosive gas and air pollutant exposure. Dr. Michael Kunzer, Group Leader LED Modules at Fraunhofer Institute for Applied Solid State Physics and his colleagues, Ralf Schmidt, Andreas Zibold, Vasileios Georgiou-Sarlikiotis, Michael Arnold and Isabel Kinski propose luminescent ceramics as an interesting alternative to polymer-dispersed phosphors. This provides entirely new opportunities for the manufacturing of white LEDs. The authors explain the properties and advantage of this hermetic, light converting cap material and how to completely avoid polymers. Read more »

Resources | LpR Article | Research | Thermal Management | Testing | Measurement | Feb 05, 2020

A New Approach for Fast and Accurate Measurement of Light Emitting Diodes Junction Temperatures

A New Approach for Fast and Accurate Measurement of Light Emitting Diodes Junction Temperatures LpR 73 Article, page 48: Junction temperature of LEDs is one crucial parameter to being thoroughly observed. In this paper, Ahmet Mete Muslu, Onuralp Isil and Prof. Mehmet Arik from the Energy Efficient Electronics and Lighting Technologies Center (EVATEG), Department of Mechanical Engineering at the College of Engineering Ozyegin Universitywill at first describe the importance of Tj for LED systems including RGB and white LEDs. Then they will present techniques from literature and recently in-house developed novel methods and a new Junction Temperature Measurement Device (EVAtherm). Results in selected general lighting and automotive lighting applications will be demonstrated. Read more »

Environment | Commentary | Resources | Health + Environment | Dec 16, 2019

Care, Caution & Awareness Are Needed When Using LED Lights

Care, Caution & Awareness Are Needed When Using LED Lights Kyra Xavia is a researcher, educator and investigative journalist based in New Zealand. Her roles as general secretary of the Light and Lighting Research Consortium (LLRC), delegate for the International Dark Sky Association (IDA), New Zealand Ambassador for Women in Lighting 2019, and co-leader of the Dunedin Dark Skies Group, involve educating decision-makers and the public about the importance of responsible lighting, nocturnal placemaking and the value of darkness. Recognised in New Zealand and abroad for her advocacy in these matters, Kyra has co-authored research papers and published articles specific to this subject. Kyra has recently been awarded with The Dark Sky Defender Award. Read more »

Resources | LpR Article | Special Applications | Artificial Intelligence | Dec 16, 2019

AI & Lighting

AI & Lighting LpR 73 Article, page 62: Recently, Artificial Intelligence has emerged as an evolutionary force in almost every industry, demonstrating its potential to radically change existing processes. In common literature, AI is interchangeably used with Machine Learning for which various tools have already become commonplace. Henri Juslén, D.Sc (tech.), Chief Future Illuminator, Omar Nasir, M.Sc (tech.), Data Scientist, and Javad Nouri, M.Sc, Data Scientist at Helvar Oy Ab discuss AI on the context of the lighting industry where the scope of applications of AI is similarly quite broad, impacting the various stages involved in the lighting life-cycle such as design, installation, commissioning and configuration. Read more »

Resources | LpR Article | Special Topics | LiFi | Dec 16, 2019

LiFi as a Paradigm-Shifting 5G Technology

LiFi as a Paradigm-Shifting 5G Technology LpR 73 Articles, page 54: There are many misconceptions about LiFi, a wireless communication technology that uses the infrared and visible light spectrum for high speed data communication. Prof. Harald Haas, Professor of Mobile Communications at the Institute for Digital Communications from the University of Edinburgh, will explain what Light-Fidelity (LiFi) is and argue why it is a 5th Generation (5G) technology. Peak transmission speeds of 8 Gbps from a single light source have been demonstrated, and complete cellular networks based on LiFi have been created. Besides discussing numerous misconceptions, the potential impact this technology can have across a number of existing and emerging industries will be explained as well as new applications that LiFi can unlock in the future. Read more »

Resources | Tech-Talks Bregenz | Laser Technology | Dec 13, 2019

Tech-Talks BREGENZ - Julian Carey, Marketing Manager at SLD Laser

Tech-Talks BREGENZ - Julian Carey, Marketing Manager at SLD Laser In 2016, Nobel Laureate, Professor Shuji Nakamura held a key note speech at LpS. As the founder of Soraa and SLD Laser, he named laser lighting as the next, innovative step and disruption in lighting. He emphasized the need to focus on light quality and the tailoring of LED lighting to the natural needs of humas, providing light that mimics sunlight as closely as possible. It was therefore self-evident that LED professional would invite Julian Carey, the Product and Technical Marketing Manager at SLD Laser, for a Tech-Talk when he was at the LpS 2018 in Bregenz. We asked him for an update on the status of laser lighting, business strategies and future prospects and how laser lighting has developed since Professor Nakamura's statements in 2016. Read more »

Resources | Commentary | Quality | Nov 15, 2019

Commentary: Providing Better Light Should Still be the Focus of the SSL Industry

Commentary: Providing Better Light Should Still be the Focus of the SSL Industry J. Norman Bardsley, PhD - As President of Bardsley Consulting, Norman advises industry, government and academia on solid-state lighting, flat panel displays and energy efficiency, with special emphasis on diffuse lighting and organic electronics. Read more »

Resources | LpR Article | Research | Thermal Management | Sep 23, 2019

Thermal and Optical Challenges for SSL in Automotive Applications

Thermal and Optical Challenges for SSL in Automotive Applications LpR 72 Article, page 50: Solid State Lighting changed the lighting environment in automotive lighting almost more than in the field of general lighting. While efficiency of the devices increased and every few weeks new improvements are reported, thermal management remains crucial and a critical part of the system. Umut Zeynep Uras, Ahmet Mete Muslu and Mehmet Arik, from the Energy Efficient Electronics and Lighting Technologies Center (EVATEG), Department of Mechanical Engineering, College of Engineering at Ozyegin University, and Fatih Goren from the FARBA Corporation, explain the dependencies between photometric, electrical and thermal parameters of an automotive lighting application. Read more »

FEATURED

LumiTop 4000: Comprehensive Optical Wafer Testing for μLEDs

LumiTop 4000: Comprehensive Optical Wafer Testing for μLEDs Instrument Systems offers a unique camera-based measurement solution for μLED wafer testing that generates 2-dimensional, pixel-resolved optical analyses within given cycle times. The LumiTop 4000 has a resolution of 12 MP and can detect the smallest of defects and inhomogeneities on the wafer. ... Read more »

FEATURED

Lumileds Maximizes Field Usable Lumens: New LUXEON HL2X LED

Lumileds Maximizes Field Usable Lumens: New LUXEON HL2X LED Lumileds introduces the LUXEON HL2X, the ideal choice for roadway lighting and sports lighting fixtures with the highest flux and efficiency in an industry standard package. "With 318+ lumens at 700 mA and 85°C, LUXEON HL2X delivers more 'field usable lumens' for optical engineers to work with. ... Read more »

EDITORIAL

Australian Associated Press Recently Wrote: Red Light Could Improve Over-40s' Eyesight

Australian Associated Press Recently Wrote: Red Light Could Improve Over-40s' Eyesight A small LED torch that emits deep red light could help improve declining eyesight, scientists have said: A study by University College London, involving a small sample size of 24 people, has shown that staring at long wavelength light for three minutes every day can "significantly improve vision" ... Read more »

EDITORIAL

Signify Invests to Broaden Its UV-C Lighting Portfolio for Professional Disinfection

Signify Invests to Broaden Its UV-C Lighting Portfolio for Professional Disinfection Signify, the world leader in lighting, is increasing its UV-C lighting production capacity and expanding its UV-C product portfolio. The company is leveraging more than 35 years of expertise in UV-C lighting to address the growing global need for the disinfection of air, surfaces and objects. Read more »