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Technologies | Light Generation | Jan 12, 2016

Innovation Could Revive Incandescent Lighting, Bring More Efficient Solar Cells

Innovation Could Revive Incandescent Lighting, Bring More Efficient Solar Cells Incandescent lighting could make a comeback with a new type of filter that "recycles" infrared photons and improves efficiency, an innovation that also could enable solar cells to convert heat into electricity more efficiently than conventional photovoltaic technology. Read more »

Technologies | Research | Light Generation | Health | Perception | Simulation Tools | Jan 04, 2016

Latest Research Publications in the Journal of Solid State Lighting

Latest Research Publications in the Journal of Solid State Lighting On December 24th and 29th, 2015, three new articles have been published in the SpringerOpen Journal of Solid State Lighting. The three articles are titled "Optical Role of Die Attach Adhesive for White LED Emitters: Light Output Enhancement without Chip-Level Reflectors", "The Importance of Intrinsically Photosensitive Retinal Ganglion Cells and Implications for Lighting Design", and "Towards Perceptual Accuracy in 3D Visualizations of Illuminated Indoor Environments". Read more »

Technologies | LpR Article

Solving the Phase-Cut Dimming Challenge

(a) Analog controlled LED dimming. (b) Digital controlled LED dimming. (c) DimMasterTM controlled LED dimming The evolution of dimmable LED lighting is an ongoing subject and phase-cut dimming is often dissatisfactory. While some weaknesses may be acceptable in residential applications, they are definitely not acceptable in professional applications. Stage lighting, studio lighting, TV and movie lighting set the highest standards. Craig Sharp and Bill Trzyna, Research & Design Engineers at CCI Power Supplies LLC discuss which developments helped to overcome limiting obstacles and led to a solution that also satisfies stringent requirements. Read more »

Technologies | Luminaires | Outdoor Applications | Nov 26, 2015

Gunshot Detection for Lighting Fixtures

GE LED Lighting for Intelligent Cities Cities and their emergency responders will soon have a new way to deploy gunshot detection technology and be able to respond to incidents and react faster to protect their residents. A memorandum of understanding (MOU) between GE Lighting and SST, Inc., developer of the ShotSpotter™ crime detection and location suite, lays ground to embedding sophisticated ShotSpotter technology into GE’s intelligent LED street lights. Read more »

Technologies | Light Conversion | Quantum Dots | Nov 25, 2015

Cadmium-Free Quantum Dot Technology in LED Lighting

Cadmium-Free Quantum Dot Materials (Photo by Katharina Fink) Nanoco and its partner Marl International, a pioneer of the LED lighting industry, demonstrated four product lines based on Nanoco’s CFQD® quantum dot film technology last week at LuxLive. The CFQD® Quantum Dot technology as a revolutionary solution for high-end lighting applications in retail and specialty, architecture, and agriculture, where maintaining true-to-life color representations maximizes user experience and value. Read more »

Technologies | LpR Article

Street Lighting Evolution through LED Technology

SMI technologies with astronomical response has automatic changeover to lower light levels Standard electronics is usually based on a relatively simple straight-forward technology. Outdoor lighting is more challenging in several aspects, especially robustness. This is also true for the electronics. Sandra Solán, R & D Manager from ELT Electronic Division has studied this technology in depth. To celebrate the IYL 2015 she will explain technical advances, benefits, strengths and technical challenges of current and future street lighting systems for an electronics manufacturer. Read more »

Technologies | LpR Article

A New Approach to the Design of Driverless AC LED Light Engines

Example of a sub 5 W driverless LED light engine Driverless AC LED light engines have now become a commonplace item of commerce in the lighting industry. Nearly all of them use high voltage integrated circuit switching chips to intelligently change the number of LEDs in a string during a power line cycle so that the voltage of the LED string matches the instantaneous power line voltage. However, customers are demanding higher efficiency, lower cost, and especially a reduction in the flicker content of the emitted light. Peter W. Shackle, president of the consulting company, Photalume, describes some new circuits for AC LED light engines [1] that provide a non-dimming solution with reduced cost, increased efficiency and better light quality as perceived by the human eye. Read more »

Technologies | Electronics | Oct 06, 2015

µModule LED Driver Integrates All Circuitry, Including the Inductor in a Surface Mount Package

Only 9 x 15 x 4.32 mm, the LTM8040 LED driver is a complete system in an LGA package David Ng, Module Development Manager at Linear Technolgies, explaines the features of a compact step down DC/DC module for distributed LED power supplies in a DC grid that offers high efficiency, a wide dimming range, and a current range from 35 mA to 1 A. Read more »

Technologies | LEDs | Light Conversion | Sep 01, 2015

FAU Researchers Create the World's First White LEDs Based on Fluorescent Proteins

Gel-like networks consist of a concentrated aqueous protein solution and a polymer compound (Image: Michael Weber) LEDs are up to 80 percent more energy-efficient than normal light bulbs and last around five times as long as energy-saving light bulbs. As a result they are being used more and more frequently as a source of light. Nevertheless, white LEDs still have room for improvement, as current manufacturing processes are either very expensive or result in the lifetime of the LEDs being reduced. Researchers at FAU have now developed a new, rather unusual manufacturing method: their LEDs are partly made of fluorescent proteins. Read more »

Resources | Reports | Technologies | Controls | Jul 22, 2015

NLPIP Releases Report on Wired and Wireless Lighting Controls

The graphics from the report shows how different sensor systems can behave; in this case a wired vs. a wireless photosensor The National Lighting Product Information Program (NLPIP) at Rensselaer Polytechnic Institute’s Lighting Research Center (LRC) recently released its latest publication, Lighting Answers: Comparison of Wired and Wireless Lighting Controls for Single Rooms. Read more »

Technologies | Thermal Management | Jun 24, 2015

Litecool Turns LED Packaging on Its Side

Litecool's new packaging concept significantly reduces the thermal resistance of LED packages by using a vertical dielectric Litecool has produced LED packages in a vertical orientation rather than horizontal. This means that the dielectric layers only have a minor impact on the thermal performance of the LED package and allow the heat to escape more effectively through the metallic parts of the package. This has significant benefits for flip-chip packaging where dielectric layers are usually very close to the diode. Read more »

Resources | Roadmap | DoE | Technologies | SSL | Jun 15, 2015

DoE: Solid-State Lighting R&D Plan

The solid-state lighting (SSL) revolution signals a profound shift in how we will use and consider lighting and represents a huge opportunity to generate significant energy savings. The energy being used for lighting represents a significant portion of global energy use. Rising electricity prices, mounting concerns about climate change, and desire for energy independence are causing the global lighting market to shift toward more energy-efficient light sources. Read more »

Technologies | Electronics | May 27, 2015

Power Conversion Efficiency - Key for Stand-Alone Solar Powered Lighting in Nordic Regions

A sophisticated driver design and controls system is the most relevant component for a truly efficient power conversion enabling the use of stand-alone solar powered lights in the Nordic regions even in winter time Stand-alone solar powered lighting solutions are made possible even in the Nordic region through a new, ground-breaking Danish project. An ideal collaboration between scientists from 4 different fields and private companies has succeeded in creating a system and a methodology that makes the impossible possible: Outdoor solar lighting which is not just a decoration. Read more »

Technologies | Optics | Material Science | May 12, 2015

ORNL Superhydrophobic Glass Coating Offers Clear Benefits - Maybe Also for Lighting Optics

Schematic representation of the coated product and applications. The properties could also be useful in different lighting applications lke outdoor lighting, street lighting or for automotive headlights A moth’s eye and lotus leaf were the inspirations for an antireflective water-repelling, or superhydrophobic, glass coating that holds significant potential for solar panels, lenses, detectors, windows, weapons systems and many other products. The discovery by researchers at the Department of Energy’s Oak Ridge National Laboratory, detailed in a paper published in the Journal of Materials Chemistry C, is based on a mechanically robust nanostructured layer of porous glass film. The coating can be customized to be superhydrophobic, fog-resistant and antireflective. Read more »

Resources | Reports | Market | Technologies | OLEDs | Dec 11, 2014

Research and Markets Announces OLED Lighting Opportunities 2015-2025 Forecast

The report covers several different aspects like for instance a comparison between important LED and OLED properties OLED lighting is an emerging solid-state lighting technology. It potentially provides a route into the large and growing global lighting market. The lighting market is however complex as it is a highly fragmented space thanks to the existence of a broad technology mix and a diversity of customer needs. Read more »

FEATURED

J Series® 2835 G Class Mid Power LEDs

 J Series® 2835 G Class Mid Power LEDs J Series 2835 G Class LEDs combine high efficacy and superior value in an industry-standard package. Optimized for both horticulture and general illumination applications, these LEDs are valued for their high efficacy and uniform appearance in applications such as downlights, troffers, panels and ... Read more »

FEATURED

Luminus Releases Hospitality COB Series for Hotels and Restaurants

Luminus Releases Hospitality COB Series for Hotels and Restaurants Luminus Devices has announced its new Hospitality COB series featuring high color rendering, precise chromaticity control and Warm CCTs. With LES sizes ranging from 6mm to 22mm, and lumen output from 500 to 5000 lumens, the Luminus Hospitality COB series is the smart choice for beautiful, warm ... Read more »

FEATURED

LUXEON 5050 Offers Advanced Options for the Horticulture Industry

LUXEON 5050 Offers Advanced Options for the Horticulture Industry Lumileds, a global leader in innovative lighting solutions and the originator of the 5050 LED, is again improving LUXEON 5050 Round performance and is characterizing the LED for use in the horticulture industry. For illumination applications, 70 CRI lumen performance increases by as much as 5lm. In ... Read more »

FEATURED

WHITE PAPER: Measuring UVA & Violet LED Light Sources

WHITE PAPER: Measuring UVA & Violet LED Light Sources As the development of new UV LED sources continues at an ever-growing pace, so do the industrial applications that utilize them. UV LEDs are being put to work in various industrial processes, medical applications, and disinfection solutions. Efficient utilization of the UV radiation requires good ... Read more »

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