LM-80 the LED Lumen-Maintenance Testing Standard

IESNA published LM-80, the LED lumen-maintenance testing standard in October 2008, The purpose of LM-80 is to establish uniform test methods for lumen maintenance of LED light sources including LED packages, LED lighting modules.In turn, this allows a comparison of test results from various laboratories. LM-80 lists what data needs to be reported,but it does not specify how the data should be presented, nor does it address the uncertainty of testing equipment and repeatability of testing operations. With over a year of experience using the LM-80 standard, more evidence and data are available to analyze its impact. Increasingly, LED users realize and understand that LED lumen-degradation behavior in the first few thousand hours of testing, as specified in LM-80, cannot reliably be used to predict the much longer L70 life. L70 is the time taken for LED light output to fall to 70% of its initial value.In this same timeframe, many LED luminaire products have been qualified for Energy Star certification. The Energy Star criteria for luminaires (SSL v1.1) sets specific lumenmaintenance threshold values that must be achieved after 6000 hours (in contrast with LM-80, which prescribes a test procedure. LM-80-the-LED-Lumen-maintenance-Testing-Standard

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The Challenges in Offroad LED Lighting

There was also an excellent presentation by Mark Hand of Acuity Brands Lighting on the challenge of cost-effective LED offroad lighting.Hand stated that pole cost and installation dominates the up-front cost of street lights.So LED lights that allow greater pole spacing have a huge economic advantage that can trump energy savings. Hand described the problem depicted in Fig.2. The goal is to put an equal number of foot candles (Xfc in Fig. 2) on the ground regardless of the distance from the pole. But longer throws have a narrower beam and the inverse square loss for light vs distance applies.The off road lights must output 9 times the lumens to reach the far end of the last zone relative to the first, meaning that glare becomes a huge issue for greater pole spacing. The-Challenges-in-Offroad-LED-Lighting

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Rigid LED Lighting Show Healthy Growth

The total global market for LED lighting is expected to grow from $3.8 billion in 2010 to $8.3 billion in 2014,according to a new report entitled “rigid LED strips,Market Analysis & Forecast”from market-research firm Strategies Unlimited.Replacement LED lighting are analyzed separately, and the market for LEDs will exceed $10 billion in 2014. For many SSL applications, the quality of LEDs has improved to a point that performance is no longer an issue.Instead, the main issue is now the price of designing LEDs into luminaires. White LED lighting applications have been boosted by improvements in HB-LED performance and price;heightened awareness about energy efficiency;phasing out of incandescent LED bulbs;and fiscal stimulus undertaken by various countries around the world. Quality issues that affected the market penetration of previous energy-efficient LED lighting technologies continue to affect the SSL market. However, the resolve to reduce energy consumption is likely to propel LED technology to be widely commercialized. led-lighting-show-healthy-growth

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UL 8750 Safety Standard for LED Lighting is Published

Underwriters Laboratories (UL), an independent product safety certification organization based in Northbrook, Illinois, has published ANSI/UL 8750 “Safety Standard for LED Equipment for Use in LED Lighting Products.”The first-edition standard creates a global platform of safety requirements for LED lighting equipment as well as the entire supply chain of components used in lighting products employing LED technology.“UL 8750 provides manufacturers a single,much-needed safety standard for testing their LED products and related components sold in the United States,”said Alberto Uggetti, general manager, UL Lighting Business. In North America, several Nationally Recognized Testing Laboratories (NRTLs), including UL itself, are authorized to conduct product safety testing and certifi cation of LED products according to standards that now include UL 8750.The evolution of LED lighting technology created the need to address potential safety concerns, including the risk of overheating, electric shock and fire. In response, UL hosted a lighting stakeholder summit with more than 100 representatives of industry,government and testing organizations to discuss the proliferation of LED technology and its future use in lighting design and manufacturing. Using the insight gained from the summit, UL published the first of three Outlines of Investigations, or safety requirements, in January 2007 , which eventually became UL 8750.

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Color Change RGB LEDs Had Effects on the Wind Turbine’s Performance

LEDs mounted onto the blades of a giant windmill near Munich, Germany, created agiant revolving multimedia installation in the run-up to Christmas 2009. Siemens and its lighting subsidiaries Osram and Traxon,together with multimedia artist Michael Pendry, created the Superstar, which had a span of nearly 70m and was visible from a distant of up to 30 km. Around 1000 Traxon Dot XL-9 lighting fixtures,each containing 9 Osram LEDs, were mounted on the rotor blades, requiring nearly 400 meters of power cables. The LEDs were fastened to the wind turbine blades with superglue used in space programs,since under windy conditions the LEDs are subject to forces up to 20G. Controllable by DMX as well as DVI input signals, the Dot XL fixtures were capable of showing RGB LED strip lights color-changing effects as well as medium-resolution video content. The LED lighting installation added 100 kg to each rotor blade, but tests showed that the LEDs had only a minimal effect on the wind turbine’s performance. Color-Change-RGB-LEDs-Had-Effects-on-the-Wind-Turbine's-Performance.

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Audi 8 Apply LED Headlights Available

Audi has made LED headlights available as an optional extra on the new A8 with LED Light Bars. The low beams comprise 10 individual lens modules extending through the headlight in a distinctive arc known as the “wing” owing to its shape. Just below this is another arc of 22 white and 22 yellow LED lights for the daytime running lights (DRLs) and the turn signals.These appear to the viewer as homogenous,continuous nora tape light. Located above the “wing” are the high beams, whose light is generated by two powerful fourchip LEDs and a free-surface reflector system. Additional high-output LEDs generate the highway light and the cornering light. A separate fan and heat sink regulate the temperature of each headlight unit and prevent condensation.

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LED Tape Lights Have Better Luminous Efficiency by Acriche 4

Seoul Semiconductor has introduced the Acriche 4, a new version of its alternating-current (AC)12volt LED products,such as 12V LED Tape Lights in major markets around the world. The company claims that the A4 offers “better luminous efficiency” than comparable DC-driven LEDs. The A4 devices have a color temperature of 3000K and efficiency of 75 lm/W, while also offering a high CRI of 85. Warm-white LED strip lights struggle to deliver high efficiency and high CRI simultaneously. The company said, “With the mass production of the Acriche A4 series, we will be able to provide both high-quality and normal-use markets with light sources that have exceptional performance and lower prices led-tape-lights-have-better-luminous-efficiency-20150513

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LED Home and Commercial Lighting Change Human Life

LED products are the future of lighting including LED bulb lighting,LED work lighting,LED strip tape lighting,LED bar light. They are quite complex and rapidly evolving. No other lab in the world offers the same breadth of safety and performance testing services. Plus, the best LED lab in Europe, North America and Asia,And our engineers offer the kind of guidance that can make all the difference when it comes to getting your LED product to market on time,such as LED light bulb make humen live better,LED Christmas strip lighting make your Christmas Day more happier. LED-home-commercial-lingting-20150513

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Lumileds adds high-voltage mid-power Luxeon LEDs

Philips Lumileds has announced the Luxeon3535 HV LED family that, as the model suffix implies, operates from higher voltages; 24V and 48V versions are available. The higher forward voltage simplifies driver design because the voltage drop from the AC line power is less than in typical low-voltage LEDs, and the lesser difference can result in better efficacy. Lumileds is targeting what it terms space-constrained SSL applications including retrofit lamps, downlights, and wallmounted luminaires including sconces. LEDs

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Drop-in DC LED Light Engines For OEM Applications

Simplify solid-state luminaire development with these high-performing DC based LED light engines from the authority on LED power, TRP.Designed to be ìstandard,î these boards are easy to seamlessly drop into a wide variety of existing luminaire form factors.A complete product line gives you options for a variety of applications. Get high lumen output and long life.These models are optimized for use with TRP’s comprehensive line of high performance LED drivers.

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