Friday, 30 July 2010
The original white LEDs used in 12-volt environments had a stark, blue hue. They were high-heat single-emitter chips and used a plastic cap to focus the light into a narrow beam – a feature great for flashlights but bad for general lighting. Neutek led the industry in adopting flat, wide-angle, natural hue warmer phosphers and always used multiple emitters in each LED element to obtain more light at lower temperatures. They also incorporated into every product several voltage and power control circuits needed to protect LEDs from the harsh electrical and thermal environment found in RVs and boats.
converting to street lighting with LEDs by OSRAM Opto Semiconductors on a broad scale. The city of 520,000 inhabitants on the Trans-Siberian Railway has installed 200 street luminaires made by LLC TD Focus, which are equipped with Golden Dragon Oval Plus LEDs. The city can therefore achieve significant savings in energy costs and CO2 emissions.
Thursday, 29 July 2010
classed by the Environment Agency as “in scope” for the WEEE Regulations?
LUXEON Rebel ES is optimized for outdoor applications, including streets, roadways, tunnels, and high- and low-bay lighting, with correlated color temperatures (CCTs) centered at 4100K and 5650K. The combination of light output levels, efficacy, and color temperature enable higher performance lighting systems that meet the needs of our customers and the end markets they serve. Options include optimizing for light output, thereby reducing the number of emitters required and potentially reducing upfront costs; optimizing for efficacy, which lowers operating expenses through energy savings; or designing for variable operation based on the amount of light required at a particular time of day, or at a particular location.
Wednesday, 28 July 2010
dimmed. “Something essential had been taken away,” she writes, “something larger than sheer illumination: the assumption that we could live without thinking about energy, that we could take it all for granted.”
debuted a solar-powered lightbulb. Each five-inch solar lightbulb contains five LEDs, and four small solar panels made of single crystalline cells embedded in the plastic casing. With a claimed lifespan of 50,000 to 100,000 hours, the lightbulb itself is weather-proof and designed for outdoor use. It also has a mechanism that switches on the lamp whenever it is placed in a dark area. Power is stored in replaceable nickel metal hydride batteries produced by the company. These recyclable components are rated to last for two to three years.
Tuesday, 27 July 2010
blue smoke. And despite its name, I don’t think it has anything to do with the James Cameron movie. There’s just a single ring of LEDs dotting the circumfrence of its face. White dots indicate hours, blue dots indicate… um… we’re not exactly sure what the blue dots indicate.
Incentive programs that promote energy efficiency would give businesses just what they need to cross over the bridge. Rebates and energy incentives help make green technology improvements accessible to clients looking to upgrade lighting systems and save on lighting expense meeting both environmental stewardship and economic goals.
LED lighting systems are more energy-efficient than traditional florescent lighting systems and as many clients have discovered, LEDs are also a more cost-effective lighting option. Walter Simpson, Plant Manager at Advent Cleaning Technology says, “More than 50% energy cost savings and low maintenance costs associated with GLS products make them attractive for any company willing to adopt energy efficient green lighting technology products. GLS also connected us with our electricity provider to procure rebates on LED lighting upgrade”.
Many utility companies offer LED lighting incentives or sizeable rebates to businesses that upgrade existing energy-consuming luminaires with LED luminaires or LED retrofit kits. The boost from green lighting incentives accelerate the customer’s ROI while reducing their energy consumption and operating expenses. In addition, customers have the benefit of longer lighting lifetime while virtually eliminating maintenance cost.
Monday, 26 July 2010
created ceiling tiles that use Light Emitting Diodes (LEDs) in a revolutionary, patent-pending, lighting fixture that can save users thousands of dollars, while significantly benefiting the environment. 'For the first time, an LED ceiling tile bright enough for room illumination is available for a reasonable price, said Sinofsky.We are thrilled to make this technology available to architects, builders and the public because widespread use could prevent millions of tons of CO2 (carbon dioxide) from spewing into our atmosphere Carbon dioxide is a principal contributor to the greenhouse gases responsible for global warming.
Friday, 23 July 2010
Taiwan will account for a 26% share of the LED chip output globally in 2010, which is projected to increase 37% from 2009 to US$9.6 billion, according to research firm Topology Research Institute (TRI). Production by Taiwan's LED chipmakers is expected to grow at an even faster pace at 43% to US$2.5 billion. The research firm pointed out that Taiwan's LED industry will continue to consolidate and synergize as any players unable to expand capacity to at least 50 MOVCD sets in the next three years will likely be eliminated.
Stephen Ceseretti of Ft. Lauderdale-based SESCO, a Nexxus lighting rep, worked closely with the Broward Center team to determine the optimal LED lighting solution for the various projects. Nexxus Lighting's Array Lighting LED light bulbs utilize a patented design and patent pending Selective Heat Sink Technology, an innovative approach to thermal management which allows an array of low power, high efficacy LED's to achieve superior performance and a lamp life of more than 50,000 hours. Array lamps are fully dimmable on most standard incandescent dimmers and provide up to 80% energy savings compared to conventional incandescent and halogen bulbs.
Thursday, 22 July 2010
EasyWhite binning is a unique feature of Cree lighting-class multi-chip LED components that enables customers to specify a color temperature and lumen output, simplifying LED system design and improving LED-to-LED color consistency. Each bin, at the intersection of the black body locus and standard warm/neutral CCT points, is 94 percent smaller than the respective ANSI C78.377 quadrangle and 75 percent smaller than current Cree EasyWhite bins.
every year. In the three years since the city converted all 106 traffic signals to light-emitting diode fixtures, they have not changed a single bulb. And city Public Works Director Charlotte Katzenmoyer doesn't expect to have to change any bulbs for at least another seven years. "They should last even longer than that," Katzenmoyer said of the LED bulbs, which are under warranty for 10 years.
Wednesday, 21 July 2010
Samsung has reportedly designed an "indestructible" AMOLED display capable of withstanding the wrath of a swinging hammer. No, this remarkable display isn't manufactured out of Kryptonite, but rather, a flexible piece of plastic coated with advanced polyimide film.
milestone essential for producing OLEDs at a low cost. The article reports that GE and Konica Minolta plan to manufacture OLEDs using high-speed, roll-to-roll processes rather than the vacuum-based batch processes used by companies in the OLED display industry. Roll-to-roll processing is key to making OLEDs commercially viable for general lighting applications. .
Tuesday, 20 July 2010
"The allowance of Vu1's first patent application, one of 11 pending U.S. and international patent applications that we have already submitted for our ground-breaking technology, is another very important step for Vu1," commented R. Gale Sellers, Vu1's Chief Executive Officer. "With Vu1's first preliminary order received, its first patent application now allowed, its manufacturing facilities operational and ready to ramp up, the Vu1 team is excited to be moving ever closer to delivering on the promise of its ESL(TM) technology. While we remain focused on securing additional orders for Vu1's R30 light bulbs, I believe the biggest achievement will be securing UL Certification for our first product, which we expect to receive this summer, allowing us to transition to full commercialization of Vu1's ESL technology."
Vu1's ESL proprietary technology produces light virtually identical in quality to traditional incandescent light bulbs, as well as being highly energy-efficient. By contrast, the majority of currently available 'green' lighting technologies, such as CFL and LED, do not produce the same quality of light and can make skin tones look green and bluish respectively.
limited in the third quarter, said market research firm LEDinside on Tuesday. Demand has been rise for LED products since the second half of last year, and prices have remained stable, a main reason for LED companies to post brilliant earnings thus far this year, LEDinside noted.
Monday, 19 July 2010
The AT9917 uses a peak current mode control scheme to drive single switch converters and includes an internal transconductance amplifier to accurately control output current to the LEDs. It also includes a fault output using an external FET, to disconnect the LED string during erroneous conditions, such as an alternator load dump.
The AT9932 features a unique feed forward current control scheme, which achieves very low susceptibility to input voltage transients, making it indispensable for automotive LED lighting applications. The IC can maintain constant output current even under vigorous input transient conditions. Its output current control loop is inherently stable and can be compensated using a single capacitor with the appropriate damping at the coupling capacitor.
The AT9917 and AT9932 are available in 24 lead TSSOP packages (AT9917TS-G & AT9932TS-G). The parts are RoHS compliant. Samples are available from stock. Pricing is US$2.05 each for the AT9917TS-G and US$2.23 each for the AT9932TS-G, both in 1K quantities.
Friday, 16 July 2010
Amber LEDs have been essential for automotive and construction/manufacturing lighting applications for some time and in the lighting market, they have been implemented in entertainment solutions. Now, there is particular interest from the makers of retrofit bulbs designed to replace traditional incandescent lamps and replicate the color change from white to reddish-yellow as the light is dimmed.
Unlike conventional bulbs, white LEDs do not change color as they are dimmed so the "color" of the white light is always the same. Adding an amber LED to the system allows a retrofit bulb's light to change in a way that people already expect. However, amber LEDs typically have poor light output and color stability at the high temperatures found in retrofit bulbs. LUXEON Rebel PC Amber combines the same blue, thin film flip chip used in the company's white LUXEON LEDs. By adding proprietary Lumiramic phosphor technology, Philips Lumileds manufactures a highly stable, reliable amber LED that performs in high application temperatures, high humidity, and high drive currents, and still delivers the light output, efficacy, and quality of light required.
Thursday, 15 July 2010
A firm in the US has launched a new variety of LED bulb which it states is both more efficient and longer-lasting than traditional lighting technology. Leds America has introduced its Led-O bulb, a 100 per cent recyclable item which is designed to be usable as a straight replacement for a standard bulb. The 6W bulb is said to be able to deliver the same lighting output as a traditional 60W bulb and is 50 per cent more efficient than the current standard compact fluorescent lamp bulbs.
introduce into the Japanese market six new LED lamp models, including the E17-base compact lamp that achieves brightness at the industry’s highest levels. The DL-JA51N E17-base compact lamp achieves brightness (500 lumens) and luminous efficiency (96 lm/W) at the industry’s highest levels.
Wednesday, 14 July 2010
Amplex delivers lighting controls systems used to manage millions of streetlights on a daily basis across many different countries around the world. Amplex’s lighting controls system is an automated management system that puts intelligent monitoring and control in every streetlight cabinet and ties them all together into a centralized streetlight management system. The acquisition of the street lighting activities of Amplex further strengthens Philips’ global leadership position in lighting and supports growth of its outdoor lighting business. It follows last year’s acquisitions of Teletrol Systems Inc. in the U.S. and Dynalite in Australia also in this field.
Dense arrays of miniature LED light sources called microLEDs hold promise in micro-display applications ranging from general lighting to neuroscience, microscopy, and communications. Startup mLED Ltd has spun out of the University of Strathclyde in Glasgow, Scotland with a funding round led by the Braveheart Investment Group. The company is focused on microLED (micropixellated LED) technology that integrates thousands of miniature LED emitters using a GaN (gallium nitride) semiconductor process.
Tuesday, 13 July 2010
instant messages to their parishioners and any others who might be driving past the church's location. The idea was tossed to the Dyer County Regional Planning Commission at their meeting this past Thursday. Daniel Cobb, Dyer County Planner, presented a packet at the meeting bringing members up to date on potential regulations regarding the flashing LED signs. Cobb noted members should carefully consider any claims concerning safety and other aspects, keeping in mind the information was from only one company.
Monday, 12 July 2010
launched an offline driver for LEDs which is designed to make the technology more cost-effective than ever. The companys new NCL30001 product is an integrated device which provides power factor correction (PFC) and isolated step-down AC-DC power conversion in a single stage. It is designed to be configured for applications such as street and architectural lighting and provides advantages such as a reduced component count and superior overall efficiency.
Department of Energy.
Friday, 9 July 2010
global cross-licensing agreement to use each other's patented technology in light-emitting diodes. The companies said they both hold "broad and substantial" patent portfolios that are important to their respective businesses.
Thursday, 8 July 2010
expensive to manufacture because of the high cost of LEDs and heat-sink design. Instead of competing with the CFL bulbs only on energy saving, LED Lighting manufacturers are trying to differentiate LED products by offering more advanced features than their CFL competitors.
take-up of the technology. This is the prediction of manufacturers Samsung and LG, which told Indian publication Businessworld that they are to offer a wider range of LED TVs this year in order to cater to demand.
Wednesday, 7 July 2010
favor. Rising energy costs and global warming have sparked interest in more efficient lighting. LEDs are considered far more reliable and durable than incandescent or CFL bulbs. As a semiconductor-based product, they've benefited from the rapid developments in that broader technology, seeing an increase in efficiency over time that has paralleled the increase in processing power of microprocessors. Already, LED bulbs generate light more efficiently than incandescent ones, and about as efficiently as CFLs.
extended their TitanBrite line of high-power LED technology with new 2-watt, 3-watt and 5-watt LEDs. The surface-mounted LEDs provide high intensity light of up to 58, 210 and 300 lumens respectively. The company claims that compared to similar high-power LEDs, the new TitanBrite products can provide up to a 30% improvement in heat dissipation performance and a 60% enhancement in electrostatic discharge protection. The new line features unique packaging that allows for simplified integration and for additional savings in the area of product design.
Tuesday, 6 July 2010
mercury, a substance known to be highly toxic in large amounts.
Monday, 5 July 2010
Lite Tech’s patent raises the bar for illuminated POP branding. LED signs can now be manufactured in smaller budget quantities, in shorter lead times and without costly injection molds. In addition, Alluma Tech’s LED products are as bright as conventional neon signs and will last as long. Reduced packaging/shipping costs along with 80% less power consumption are significant “Green” environmental considerations for Brand Marketers.
other issues. Some white light LEDs give off a greenish tone. The light from the chip is actually blue; the green tone appears because the yellow phosphor is not perfectly matched.
Friday, 2 July 2010
As one of the world's most popular museums, the Louvre is aware of the need to replace energy consuming xenon lighting with an environmentally friendly solution. Toshiba is able to deliver this with its energy saving low-CO2 LED lighting, and will use its industry-leading products to illuminate some of the Louvre's most familiar spaces: Under its partnership agreement, Toshiba will provide the LED lighting for the Pyramids that greets visitors as they approach the museum, the Napoleon Court, and the Cour carree, the main entrance to the museum. Renovation and installation of the Napoleon Court and the Pyramid will be completed within 2011, and the Cour carree is expected to be renovated within 2012.
Alongside environmental concerns, the Louvre must assure lighting that conveys the intrinsic beauty of the museum and its spirit as the home to some of the world's greatest art. Toshiba also understands this, and has the technology for the task. The company recognizes that lighting is much more than a means to brighten public spaces, and that LED lighting can do much more than contribute to saving energy. Light has an emotional power that creates atmosphere and enriches life. Toshiba celebrates this quality as akari, a Japanese concept that conveys the ability of lighting to appeal deeply to our senses and emotions. It will seek to convey this understanding at the Louvre.
Toshiba is taking its new lighting system business to a global level, with initial promotions in such regions as France, Germany, and the UK. Toshiba LED lamps have been available at retailers in France since this January. By further promoting its business, Toshiba aims 350 billion sales in FY2015.
As one of the world's foremost eco-companies, Toshiba Group takes a proactive approach to creating value and promoting lifestyles in harmony with the Earth. In line with this principle, the company ceased production of general incandescent bulbs this March. Toshiba will further promote environmentally conscious management by working to mitigate global warming and make efficient use of resources.
Thursday, 1 July 2010
contribution toward ensuring that the public viewing will be a very special event: the light diodes, which have been placed in the windows, adapt to the game and, by means of various lighting effects, emphasize what is happening on the pitch.
Perfect for original equipment manufacturers (OEMs) or retrofit applications, these non-glare headlamps offer brighter, whiter color and a superior beam pattern – ultimately providing drivers with enhanced visibility and improved safety. The lamps have passed extensive photometric testing, carry a 4-year limited warranty, and are approved for on-road use in North America and Europe. At the heart of J.W. Speaker Corporation’s technological innovation is a cutting-edge approach to optical design. Even at a distance, it is difficult to overlook their unique combination of round “marble” and “D” lenses. More than just styling elements, these high-tech optics are what harness the light emitted from the LEDs and create a beam pattern that simply out-performs every other LED headlamp out on the market today.