Optimization of Freeform Optics Using T-Splines in LED Illumination Design

OpenAIS Symposium on IoT Lighting – Eindhoven (NL)

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White Paper: Serviceable Luminaires in a Circular Economy from LightingEurope

LightingEurope is proactively exploring the business opportunities that a Circular Economy presents for the lighting industry, as well as the framework conditions required for its successful rollout in the lighting sector. This paper focuses on luminaires, services and design for serviceability and their potential for the lighting industry.

White Paper: Polymeric Systems Bring Clarity to Optical Applications

Some optical assembly applications require optical clarity across a certain wavelength, while others require an opaque coating. Optical grade epoxies, silicones and UV curable coatings provide the versatility to adhere well to a wide variety of substrates and display the critical performance properties required. Learn more about optical transmission, refractive indices, temperature and humidity testing, and more, plus the roles these measurements play in choosing an effective and reliable optical polymer system.

BAG Electronics Becomes a Part of Osram - A Focus on LED Products and Human Centric Lighting

BAG electronics, specialising in electronic control gear, LED modules and software for innovative lighting solutions, is leaving the Trilux Group to become a part of the Digital Systems (DS) business unit of Osram. The sale is subject to approval by the relevant competition authorities.

Osram and Nichia Announce to Expand IP Co-Operation

Osram and Nichia emphasize the significance of intellectual property (IP) in their business fields and announce their intention to expand the license co-operation.

Two Drivers in One Housing for Luminaires with Direct and Indirect Light

MOSO High Reliable & Flexible Programmable Outdoor LED Driver

Cree Launches Industry’s First Extreme Density LED

On Smart Luminaires

Inventronics Introduces New Surge Protection Devices

Luger Research Creates an Active Network to Secure the Future of Innovation in Lighting: SciPiL

Luger Research establishes the first scientific lighting partnership network for research experts and leaders in the lighting industry. The scientific partnership in lighting - SciPiL - has been created to form an active network that will strengthen and build the connections between universities, research laboratories and industry. The scientific partnership’s mission is to enable and secure the continued development of innovation in lighting technology.

TiL 2018 Announces Influential Curator Rogier van der Heide Who is on a Mission to Empower and Inspire Everyone

Trends in Lighting (TiL), proudly announces its curator for 2018 will be Rogier van der Heide. A master of light, a provocateur and a futurist, Rogier is on a mission to curate an event that will empower and inspire everyone.

Two Drivers in One Housing for Luminaires with Direct and Indirect Light

The dimmable two-channel DALI DT6 constant current LED driver is the latest addition to the Premium SELV series and is already DALI-2 certified. It will typically be used in linear and panel luminaires in offices and healthcare facilities for direct and indirect lighting applications. Simple tunable white solutions are also possible.

MOSO High Reliable & Flexible Programmable Outdoor LED Driver

MOSO, one of the most influential and well-known new energy enterprises in China, dedicates to provide the efficient, intelligent and safe outdoor LED power supply solutions by introducing its programmable LDP series worldwide.

Inventronics Introduces New Surge Protection Devices

Inventronics has announced the release of a new surge protection device family designed to be used in conjunction with any of their LED driver families. Inventronics LED drivers offer industry-leading protection already but recognize some customers desire external protection for applications in hostile grid environments. These applications can include high bay, high mast, arena, roadway, industrial zones and open parking lot lighting.

Philips Lighting Introduces LiFi: Broadband Data Through Light

Philips Lighting, the world leader in lighting, is now offering Light Fidelity (LiFi), a technology in which high quality LED lighting provides a broadband Internet connection through light waves. As the lighting company for the Internet of Things, Philips Lighting is the first global lighting company to offer LiFi-enabled luminaires from its existing office lighting portfolio.

Litetronics Introduces Family of Easy-to-Install LED Strip RetroFit Fixtures

Litetronics proudly introduces its new LED Strip RetroFit family of adjustable, easy-to-install, 4-foot LED strips that can upgrade linear fluorescent fixtures from 2.75 to 5 inches wide to energy-saving LED technology in minutes. Utilizing the existing building wiring and fixture base frame, Litetronics’ LED Strip RetroFits represent the industry’s easiest and quickest way to convert floor, corridor, area, and aisle lighting within a broad range of retail, commercial, and institutional applications to the comprehensive benefits of LED lighting.

EVERLIGHT’s 3D Automobile Taillight Winning “Innovation Award” at Taipei AMPA

EVERLIGHT ELECTRONICS, a leading player in the global LED and optoelectronics industry, attended the Taipei AMPA to demonstrate new products for automobiles and win the “Innovation Award” at electronic end products and parts group with 3D automobile taillight.

Osram Adds Six New High-Power Infrared LEDs to Its Oslon Black Family

Osram Opto Semiconductors is expanding its Oslon Black family for the infrared range with six new automotive IREDs. The 850 nm versions are intended for exterior applications such as night vision, pedestrian protection, pre-field recognition and lane detection. The new 940 nm versions are suitable above all for interior automotive applications such as driver monitoring, seat occupancy detection and gesture recognition. Thanks to different wavelengths and lenses these products cover a wide range of customer requirements and can be operated at up to 5 A in pulsed mode.

Lextar Announced ADB Automotive Headlight Module

LED vertical integration manufacturer Lextar Electronics Corp (“Lextar” or the “Company”) released its adaptive driving beam (ADB) LED headlight module system. In coordination with CCD module, it can detect oncoming cars and dynamically adjust the beam pattern, creating a future new trend for LED automotive headlights. Moreover, the series products of automotive LED packaging, LED module, light engine and others was also displayed at the Auto Lamp Exhibition Shanghai (ALE) on Mar. 28 and 29 to demonstrate the vertical integrated LED product capacity of Lextar.

Smart Printing: Power Generating Films and Luminescent Glass

New inks for inkjet printers make it possible to print organic displays or solar cells on film and glass for the use in architecture, the textile industry and many other industries.

Scientists Reveal the Fundamental Limitation of In Concentration in InGaN Solid-State Devices

For the first time an international research group has revealed the core mechanism that limits the indium (In) content in indium gallium nitride ((In, Ga)N) thin films - the key material for blue light emitting diodes (LED). Increasing the In content in InGaN quantum wells is the common approach to shift the emission of III-Nitride based LEDs towards the green and, in particular, red part of the optical spectrum, necessary for the modern RGB devices. The new findings answer the long-standing research question: why does this classical approach fail, when we try to obtain efficient InGaN-based green and red LEDs?

Optimization of Freeform Optics Using T-Splines in LED Illumination Design

Freeform optics is the game changer in the illumination industry in terms of its ability to redirect the light into the target area. Non-Uniform Rational B-splines, commonly known as NURBS are widely used to represent freeform curves and surfaces. There are certain optical systems where local modification of the surface is necessary during the design or optimization phase. In such cases, NURBS cannot offer such transformations. But a new mathematical representation called T-splines make this feasible. Though its potentiality is well described, this has not been implemented in any optimization routine so far. Annie Shalom Isaac, Jiayi Long and Cornelius Neumann from the Karlsruhe Institute of Technology demonstrate the advantage of the local refinement ability of T-splines by implementing it in the optimization routine and the results are evaluated. Results show that T-splines provide more uniform and homogenous light distribution as compared to NURBS at a faster convergence rate. This makes optical design or optimization using T-splines an intuitive approach for future freeform design tasks.

A World of LED Lights - The Cost of Waiting

Today, LEDs dominate the lighting domain. They are efficient and manufacturers understand how to implement them for different lighting applications. While energy efficiency is rather well understood, the impact of the adoption speed is rarely discussed is. Benoit Bataillou, guest author from Pi Lighting, will have a look at the environmental cost of LED production versus the significant energy savings that a full transition to LEDs would bring. In a fictive scenario, he assumes that a transition takes place in a heartbeat today and compares that with the usually supposed scenario of a full transition to LED lights in 2025.

On Smart Luminaires

In the time up to 2010, conventional luminaires with low or high-pressure discharge lamps with a luminous efficacy of about 80 lm/W were developed. The electrical power was dependent on the electrical power of the lamps built in the luminaire. From 2008 and likely until around 2020, luminaires with phosphorconverted white LEDs with one fixed color temperature, a constant luminous intensity distribution and a maximal luminous efficacy of about 140-160 lm/W are developed with an electrical power between 10 W and 300 W for different applications and dependent on the manufacturer. Therefore, a relative increase in luminous efficacy of 80 -100% in the context of the discussions on “energy efficiency” is being achieved.

Tech-Talks BREGENZ - Ken T. Shimizu, Research & Development Director, Lumileds

QDs have been a hot topic in lighting for a while already, but up until now they haven’t been adopted on a large scale in lighting. The adoption began in display devices because some of the technical issues were of less concern in this application. With continuing development, QDs are now also becoming interesting for general lighting applications. Ken Shimizu, Director of Novel Technologies and Devices, Research and Development at Lumileds, attended the LpS in Bregenz and made a presentation about the company’s QD technology. In this interview he gives some background information about the QD program and future steps.

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