How to Increase the Efficiency of Two-Stage Drivers
In this article, Dr. Weirich from Infineon Technologies, describes a simple method for increasing the efficiency of drivers that can operate with LED engines with a wide range of current and power levels, at virtually no effort. In addition, the method allows for using smaller inductors in the buck stage, leading to lower cost and potentially, smaller size.
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Discomfort Caused by Glare from Luminaires with a Non-Uniform Source Luminance
Glare and the resulting discomfort are a persistent issue in lighting that became even bigger with the introduction with LEDs as a light source. While the UGR method is well established, it is sometimes heavily discussed if it is appropriate for SSL. The limitations of the UGR method need to be understood. Peter Thorns BSc(Hons), CEng, FCIBSE, FSLL, explains these limitations and consequently describes the research and how to apply correction measures.
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Good Light Helps Prevent Winter Dip
The holidays are over, it's cold and dark, we prefer to sit inside. Nevertheless, you need a daily portion of good light: it makes you more energetic, happier, and healthier. Make sure that you go outside for a good time every day and that you also have enough good light indoors during the day. Daylight is best, but there are also good alternatives with LED lighting and light therapy lamps.
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Analysis of Heat Paths in LED Retrofit Lamps
Analysis of Heat Paths in LED Retrofit Lamps by Peter W. NOLTE, Dr., Research Team Leader at Fraunhofer Application Center for Inorganic Phosphors, Germany
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How to Address the Lighting Industry‘s Concerns Regarding Product Compliance Online
How to Address the Lighting Industry‘s Concerns Regarding Product Compliance Online by Marion Ebel, Policy Manager, LightingEurope, Brussels
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Good Light Helps Prevent Winter Dip
The holidays are over, it's cold and dark, we prefer to sit inside. Nevertheless, you need a daily portion of good light: it makes you more energetic, happier, and healthier. Make sure that you go outside for a good time every day and that you also have enough good light indoors during the day. Daylight is best, but there are also good alternatives with LED lighting and light therapy lamps.
Read more »
NICHIA Unveils Advanced Tunable LED Pairing with ‘Circadian Tune’ Functionality to Enhance Body Clock Management
Proprietary Human-Centric Lighting Color and Spectrum Tunable pairing are Practical for General Lighting to Help Improve Your Circadian Rhythm.
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How to Increase the Efficiency of Two-Stage Drivers
In this article, Dr. Weirich from Infineon Technologies, describes a simple method for increasing the efficiency of drivers that can operate with LED engines with a wide range of current and power levels, at virtually no effort. In addition, the method allows for using smaller inductors in the buck stage, leading to lower cost and potentially, smaller size.
Read more »
Aledia Has Produced Its First Nanowire Chips on 300mm Silicon Wafers Using CEA-Leti Pilot Lines
Aledia, a French startup pioneering a disruptive technology for microLED displays, today announced it has manufactured the world's first microLED chips produced on 300 mm (12") silicon wafers. The company, which developed its breakthrough technology on 200 mm (8") silicon wafers over the past eight years, will produce the chips on both 200 mm and 300 mm wafers. The larger wafers provide better economic payoff and cost-effective integration with smaller-node electronics, which are only available on 300 mm silicon wafers. Aledia was spun out of CEA-Leti, a French research institute pioneering micro- and nanotechnologies, in 2012, and the work on 300 mm wafers has been performed by joint Aledia and CEA-Leti teams.
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Instrument Systems Introduces System for Efficient Testing of Advanced Headlamps
Instrument Systems presents a newly developed system for ultra-fast testing a wide range of lighting scenarios for advanced headlamps, e.g. HD / ADB / matrix / pixel headlamps. The AMS screen imaging system consists of a far field goniometer, a screen photometer and an illuminance meter and allows synchronized measurements for luminance and far field on a high level of accuracy. Supported by the extended LightCon software, compliance checks according to ECE / SAE / ICAO / FAA regulations as well as extensive graphical analysis are efficient to perform.
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Ushio's New Narrow Angle 850 nm IR Single-Chip LED Package Achieves World Record Output Power
Ushio Inc. will release the SMBB850DS-1200 series 850 nm infrared LED package in February 2021. Intended for imaging and analysis under infrared (IR) illumination using surveillance cameras, ANPR [1], and other similar devices, this product has achieved both the highest power output in the world [2] (19 W [3]) and narrow-angle irradiation. Compared to conventional LEDs for use with surveillance cameras [4], this product has achieved five times higher output per package, an irradiated area approximately four times wider, and approximately two times higher central illuminance, when used for long-distance irradiation.
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Instrument Systems Introduces System for Efficient Testing of Advanced Headlamps
Instrument Systems presents a newly developed system for ultra-fast testing a wide range of lighting scenarios for advanced headlamps, e.g. HD / ADB / matrix / pixel headlamps. The AMS screen imaging system consists of a far field goniometer, a screen photometer and an illuminance meter and allows synchronized measurements for luminance and far field on a high level of accuracy. Supported by the extended LightCon software, compliance checks according to ECE / SAE / ICAO / FAA regulations as well as extensive graphical analysis are efficient to perform.
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17% Flux Boost in Key Colors for LUXEON C and CZ Color Lines
Lumileds announced breakthrough flux delivery from the PC Amber, Lime and Royal Blue emitters in its LUXEON C and CZ Color Lines, the lighting industry's broadest lines of color LEDs. The incredible 17% leap in flux of PC Amber in LUXEON C LEDs supports more efficient, safer, and easier to design lighting for first-responder vehicles, tow trucks and construction vehicles
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Yujileds Launches the New Nourish Series LEDs 3.0μmol/J Efficacy with Specific Spectra
Yujileds is proud to introduce Nourish, a new white LED series for horticulture. The spectrum is designed as a balance between the optimization of plant growth and people's comfort. The 3000/4000 K CCT simulates the general indoor environment, with Ra 80 color rendition, biologists and agriculturist will have a comfortable environment with this light to work on the plants. Besides the standard 3000/4000 K, a specific CCT or spectrum can be customized accordingly for different plants or growth cycles.
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Würth Elektronik's Power-Saving WL-SMTW: Colors for Feeding Plants
SMT mountable LEDs in a 2835 package extend Würth Elektronik extensive range of horticulture LEDs. The three WL-SMTW series LEDs emit light of the wavelengths 450 nm (Deep Blue), 660 nm (Hyper Red) and 730 nm (Far Red) – ideal for applications controlling plant growth through specific light mixtures. Besides vertical farming and lighting in greenhouses, thanks to their efficiency, small size and minimal heat generation the WL-SMTWs, combined with the manufacturer's other LEDs are also suitable for classic LED applications like displays and backlighting.
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Zhaga and the DALI Alliance Add Sensors and Controllers to Zhaga-D4i Certification
The joint Zhaga-D4i certification program from the DALI Alliance and the Zhaga Consortium has already qualified a number of Zhaga-D4i Book 18 outdoor luminaires with Zhaga receptacles and D4i components. Now, certified D4i control devices with Zhaga connectors can also be submitted for Zhaga-D4i certification. Eligible devices include light-level or occupancy sensors, as well as control nodes that can communicate wirelessly with external networks.
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General Assembly Approves Transfer of Zhaga Books 18 and 20 to IEC
The Zhaga General Assembly has decided in November 2020 to transfer the Zhaga Books 18 and 20 to the IEC. Sharing Zhaga specifications with global standard development organizations is included in the Zhaga mission and has the goal of increasing global acceptance of Zhaga specifications.
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