Thursday, June 19, 2014

Epistar Chairman: Golden Three Years Ahead for LED Manufacturers


The arrival of LED industry’s prosperous three years is for real this time, a recent CNA report quoted Epistar Chairman B.J. Lee saying at the company’s latest stockholder meeting.


LED market’s strong demand growth is expected to continue for two years well into 2017, with penetration rates to reach 60 percent to 70 percent, estimated Lee. Industry insiders should try and make the most out of these three years.


Lee once again projected supply and demand will reach equilibrium at the end of 2014 or even earlier. High end LED chip shipment shortages are expected to reach 30 percent by second half of 2014.


Epistar’s LED lighting revenue share has increased from 20 percent in the first half of 2014 to current 25 percent, said Lee. The company’s LED lighting revenue is targeted to reach 35 percent by second half of 2014, but international backlight demands will slightly ease in second half because of China’s rebounding TV industry.


Another highlight at the stockholder’s meeting was Everlight sold its share in Epistar, bringing Everlight shares down from 11 percent to two percent. According to Lee, Everlight decided to sell its stake in Epistar because of financing demands required for the company’s mergers and expansion plans.



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Friday, June 13, 2014

Indium Nitride Nanowires Go Green


The "green gap" may be conquered by shaping InN nanowires for quantum confinement.


SPIE has a summary of research from a University of Michigan doctoral student that was published earlier this year in Nano Letters of the American Chemical Society. The student, Dylan Bayerl, and his advisor Emmanouil Kioupakis, investigated indium nitride nanowires as emission sources for the efficient generation of green light.


Calculated electronic and optical properties for hexagonal and triangular nanowires with and without including the effect of the electron-hole (e-h) interaction. (Source: ACS)

Calculated electronic and optical properties for hexagonal and triangular nanowires with and without including the effect of the electron-hole (e-h) interaction.

(Source: ACS)



The motivation for the work was to plug the "green gap." When nitrides of indium (InN) and gallium (GaN) are alloyed in varying ratios to produce light at a range of freq­uencies across the visible spectrum, a number of factors limit the efficiency with which the light can be produced, including "...fluctu­ations in the alloy composition, lattice mismatch with the substrate, and strain-induced polarization fields," according to the researchers. As it happens, these adverse factors all come together when the InN/GaN alloy ratio is tuned for light in the green range of the spectrum.


The researchers modeled the behavior of nanowires of pure indium nitride. Using a pure semiconductor instead of an alloy reduces the damping factors listed above; and configuring the semiconductor in nanowires results in quantum confinement of exitons (bound electron-hole pairs), raising the material's band gap and thus its optical emission.


They found that nanowires of 1-nm diameter will produce light in the green range. At that size, only a small number of molecules can fit in the nanowire's cross-section, and their physical arrangement -- the wire's shape -- affects the quantum confinement and thus the frequency of light produced.


With a triangular cross-section, the researchers found that the nanowires would generate light of a cyan color, with the InN material having a band gap of 3.9 eV (up from the 0.6 eV of bulk InN). When the nanowire's cross-seciton is hexagonal, the band gap drops to 3.7 eV and the light is green.


As far as I can determine, the researchers didn't actually fabricate such nanostructures out of InN; instead the study is the result of calculations and modeling, presumably on a supercomputer. Bayerl and Kioupakis write: "While such small nanowires are difficult to synthesize, InN nanocrystals just a few nanometers in size have already been synthesized, and nanorods 1nm in diameter have been synthesized from other semiconductors."


The condensed summary of the paper did not spell out the distinction among nanocrystals, nanorods, and nanowires.


— Keith Dawson Circle me on Google+ Follow me on Twitter Visit my LinkedIn page , Editor-in-Chief, All LED Lighting



Wednesday, June 11, 2014

LED Trail at 2014 LightFair International


DSCN0641


The attendance to LED Trail’s exhibit at the 24th edition of LIGHTFAIR® International set a new record, far exceeding past trade events. The conference brought many top lighting and design experts to LED Trail’s booth.


LED Trail’s new products for 2014 utilize integrated design and focus on providing enhanced illumination for improved productivity, well-being and efficiency.


LED Trail’s new EZ-Mount tube fixture with adjustable CCT was a big hit. Architects, specifiers and distributors alike were impressed by the versatility and performance of this light.


In addition LED Trail’s submission to the LFI Innovation Awards received great accolades and was selected among the top candidates in the Commercial Indoor Luminaires. LED Trail’s GoldBeach MX is among the most innovative replacement fixtures for commercial troffers. Look for more to come on this patented technology soon.


With integrated design at the core of its offerings, LED Trail has designed commercial lighting luminaires using emerging technologies and best of breed components.


Thank you for visiting us at LighFair 2014!


Sincerely,


Sam Manafi



. Bookmark the


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Plunging LED Prices Signal Start of Chinese LED Industry Restructure


The Chinese LED industry restructure is only starting as product prices fall dramatically, a Nandu.com report cited Elec-Tech International (ETI) Chairman Donglei Wang saying at the recent 2014 Guangzhou International Lighting Show.


LED lighting prices annual 25% decline to speed up consumer market adoption


Mature LED technology and manufacturing methods led to an annual 25 percent LED product price fall in China this year, noted Wang. Compared to 2013, prices for same types of LED products fell 30 percent in 2014, bringing retail prices close to CFL. The ETI Chairman projected LED lamps retail prices will drop below CFL by 2015 to 2016. Residential LED lighting market size is expected to become five times larger than commercial lighting.


Emerging smart lighting network makes it easier to transmit data


Globally, Philips has been the first to propose comprehensive smart lighting networks solutions for residential, office, commercial and city lighting applications. In the future, smart lighting networks can completely integrate LED lighting systems with smart controls, Internet, end terminal devices such as smartphones, and related software apps. Lighting will be able to transfer data and important messages in the future.


Philips smart lighting developments might be preparing ahead for future industry trends. According to Wang, globally mobile networks and LED industry will see fastest growth in the future.



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Tuesday, June 10, 2014

Novel flexible LED modules


In recent years, solid-state lighting (SSL) products have been increasingly sold in place of traditional incandescent or halogen lamps. The replacement of linear fluorescent tubes by SSL devices has lagged behind, however, due to a number of challenges. First, the efficacy advantage of SSL linear products compared with fluorescent products is small. Competitive initial costs are therefore required to ensure a return on the investment of an LED upgrade. Second, there are many different types of existing luminaires (electrical devices that create artificial light) that require different-length LED modules. Linear LED modules could thus be built in several lengths for each of these applications, but this is not a cost-effective solution. Finally, upgrading a fluorescent luminaire to an LED usually requires additional wiring and mounting of multiple LED modules during installation, which is time-consuming and also not cost-effective.


Switching streetlights to efficient LEDs takes more than changing a light bulb




LEDs, or light-emitting diodes, use less than half the electricity of old-fashioned streetlights, and they require less maintenance, too. Less juice to the pole means less pollution going from the power plant into the atmosphere. The cost savings are expected to pay for the more-expensive LEDs long before they fail. So why haven’t cities all over the metro area converted? Turns out it’s a complicated matter, and despite federal stimulus funding and a pilot project coordinated by the Mid-America Regional Council, only one metro city has fully converted to LEDs, along with a relative handful of light poles in other cities.


NEC Display Solutions Adds 30” LED-backlit Monitor with IPS Panel to MultiSync EA Series


NEC Display Solutions of America, a leading provider of commercial LCD display and projector solutions, announced today the MultiSync® EA304WMi, a 30-inch monitor addition to its premium business desktop portfolio. Power users will benefit from this performance-driven, WQXGA resolution LED-backlit model with built-in speakers.


The widescreen model features IPS panel technology with wide viewing angles (178° horizontal/vertical), touch-sensitive menu controls and ergonomic adjustability. The LED backlighting of the 16:10 aspect ratio EA304WMi allows for a slimmer profile, lighter weight and increased power savings compared to previous generation models. For workstations with multiple displays, ControlSync™ technology lets users control the settings for up to six MultiSync EA Series displays. Users are able to adjust power, brightness, volume and many other settings of the multi-monitor setup in unison through the master monitor.


“The EA304WMi monitor is the new flagship for the award-winning MultiSync EA family of displays,” said Art Marshall, Product Manager for Professional and Medical Displays at NEC Display Solutions. “In addition to its impressive imaging, this 30-inch monitor includes several NEC-exclusive features for users be more productive.”


Among them, the EA304WMi offers smart sensing technology, which automatically detects work conditions to determine the proper display brightness with ambient light and human presence sensors. In addition, a comprehensive input panel, including HDMI, DisplayPort, DVI-D, VGA and 3-port USB hub, connects users to the latest peripherals and solidifies their investments for the future.


The MultiSync EA304WMi includes the following features:



  • 30-inch, 16:10 IPS panel with LED backlighting

  • 350cd/m2 brightness, and 10-bit color over HDMI 1.4 and DisplayPort 1.2

  • Wide viewing angles of 178°H/178°V

  • 2560 x 1600 WQXGA resolution

  • 20,000:1 dynamic contrast ratio (1000:1 typical)

  • Ergonomic adjustable stand with 130mm height-adjust, tilt, swivel and pivot

  • DisplayPort, HDMI / MHL, DVI-D and VGA inputs

  • Integrated 3-port USB hub (1 up/3 down, two USB 3.0 and one USB 2.0)

  • Integrated speakers (1W x 2) and headphone jack

  • ControlSync for synchronizing settings in multi-screen setups

  • Smart sensing technology (ambient light and human sensors)

  • ECO Mode™, carbon footprint meter and cost meter

  • ENERGY STAR® 6.0, TCO 6.0 compliant and TCO Edge 2.0 certified display


The MultiSync EA304WMi ships with a 3-year limited parts and labor warranty, and will be available in June 2014 at an estimated street price of US $1,599. The monitor also comes with set-up manual, and DVI-D, DisplayPort, power, audio, USB 3.0 and ControlSync cables.



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Lighting Science's Group at Lightfair


True to its name, Lighting Science has incorporated the results of human factors science and research into its products.


At Lightfair in Las Vegas last week I had the pleasure of meeting Lighting Science's Alex Hundsdorfer and Greg Aufderheide. They gave me a tour of the company's booth, and shared with me their newest technology as well as their vision of the future.


Studies at Rensselaer’s Lighting Research Center have shown a correlation between light and our circadian rhythm. Shorter wavelength light, such as blue, signals the body that it is daytime: time to be alert and active. The lack of the shorter wavelengths does the opposite. It signals the body that day is coming to an end: time to rest. The body produces hormones in response to these variations in light.


According to Greg, the average person spends as little as 10% of her or his day in actual daylight. The rest of the time is spent in monotone artificial light. A large part of the spectral variation of the solar day is lost on us. This can have negative consequences, such as increased fatigue that results in accidents.


Spectral content

Lighting Science has invented a dynamic lighting system that changes spectral content over the course of a day. It reinforces the natural circadian rhythm. At the start of the day, the light output is rich in blue. It reinforces the wake cycle and forestalls the onset and effects of fatigue. As the day winds to a close, the spectral content changes to reinforce the normal rest cycle.


Greg pointed out that the applications extend beyond the obvious home, office, business, or factory environments. The system can improve conditions and help workers stay alert in environments that are out of synchronization with the normal solar day, such as in shift work (particularly third shifts, with their statistically much higher accident rates), for submariners (who normally work 18-hour shifts), or in space (on the International Space Station the sun rises and sets once every 90 minutes).


Following

Another novel Lighting Science product is a smart light that has built-in occupancy sensors. Unlike the standard occupancy sensor, that turns an entire room either on or off, the smart fixtures turn on the individual room lighting fixtures as needed. If one person is using a conference room designed for 20, only the lights in the vicinity of the one person turn on and follow her or his movement.


Lighting Science concepts are an example of how LED technology has the capacity to significantly improve the quality of lighting systems in a way that was never possible before.



China’s Government Subsidies Act as Double Edge Sword for LED Industry


This China-LED. Org report gives a comprehensive overview of policy developments in China and the impact these subsidies are having on the industry as a whole. The subsidies drive industry developments, but oversupply is still a big problem. Similar to earlier Chinese reports LEDinside have translated, this one also highlights lack of industry standards hinders industry development.


There are no standard statistics on China’s LED industry size. The global LED industry market value is about EUR 50 billion (US $68 billion), and the Chinese market accounts for about 12 percent to 15 percent, roughly equivalent to EUR 6 billion to EUR 7.5 billion, said Li Zhijun, General Manager, Shanghai INESA. However, industry statistics indicate the Chinese LED market value is actually much larger valuing about RMB 350 billion (US$ 24.07 billion).


Industry insiders revealed Compound Fluorescent Lamps (CFL) have about 80% market share, but LED is starting to erode CFL market shares. At the same time, the general lighting market is expanding.


China’s Central government energy efficiency policies


China’s Ministry of Finance (MOF) and National Development and Reform Commission (NDRC) jointly published “Interim Measures on Administration of Financial Subsidies for Promoting High-Efficiency Lighting Products.” The measures included financial subsidies to promote CFLs, LEDs and other highly energy efficient lighting. In the following year, the NDRC and MOF initiated financial subsidy policies to promote CFL.


Under the promotion of these policies, the lighting industry has advanced rapidly, with obvious optimization in industry structure. Market surveys by NDRC’s green lighting division showed CFL and incandescent bulb production ratio has increased from 1:1.5 in 2007 to 1:1 in 2012.


The subsidies to promote high energy efficient lighting will be ending soon, according to the measure plans. Focus is now turning to implementing related LED subsidies in China.


Related central government departments are researching and promoting LED products and policy measures, but local governments have been much quicker to react.


Local governments take the lead in implementing LED subsidies


Local governments have been much quicker than China’s central government in implementing LED subsidies.


Guangdong Province, which has the largest LED industry size in China, has highest amount of subsidies. In 2013, Foshan in Guangdong Province, Dongyuan, Zhongshan and many other cities have launched subsidy projects to promote LED lighting products and applications. Chancheng District in Foshan City released a RMB 15 million subsidy for LED lighting products, while Dongyuan City is offering up to RMB 10 million for a LED construction project. In Zhongshan city, power costs saved by LEDs are all used to subsidize construction projects.


Jiangmen City in Guangdong announced a policy to support the development of strategic emerging industries including green lights. The project is aimed at subsidizing LED industry’s epiwafer, chips, package, applications, substrates, materials and other key industries or new expansion or equipment investments. Total equipment investments that reach RMB 50 million or below will receive 6 percent subsidy. Companies with equipment investments over RMB 50 million will receive 8 percent subsidy for the amount exceeded.


At the same time, “Shanghai’s 12th five-year plan for semiconductor lighting and industry development” proposed to upgrade 20 percent of Shanghai’s 40,000 streetlights to LED.


Moreover, Nanchang, Jiangxi Province will complete retrofitting public areas with LED lights before the end of 2015. Public lighting, state-owned enterprises and other state invested infrastructures and lighting construction projects will all use LED products, and prioritize procurement of “Nangchang Manufactured products”.


Yangzhou City in Jiangsu Province started procuring government subsidized LED luminaire products as early as 2010. According to the regulations, the related municipal government agencies must purchase LED luminaires or PV products made by local manufacturers for residential, building and other applications. The value of a single government purchase can be more than RMB 100,000, and manufacturers can receive up to 20 percent financial subsidy from the procurement.


Observations by industry insiders noted China’s LED industry is still in its early stages, and the lighting industry is facing a difficult transition. However, with more energy efficient subsidies, the industry faces oversupply issues as manufacturers pour in more investments in the industry.


NDRC and China’s Ministry of Industry and Information Technology (MIIT) recently discussed LED industry’s oversupply issue at a recent meeting, said a source familiar with the matter.


Lack of industry standards sabotage development of good quality products


Disorder in China’s LED industry deserves attention, according to industry insiders. “Insufficient LED lighting standards and poor interchangeability between different product brands, might result in bad quality products driving out good ones,” said Opple Lighting Chairman Wang Yaohai.


Not so long ago, Opple Lighting pointed out in an investor prospectus three major obstacles the LED industry faces—industry upgrade, lack of market regulations, and production management difficulties. Companies face risks of sliding market shares if they are unable to release attractive products to gain market share, and overtake competitors in R&D.


Kingsun Optoelectronic also noted there are many manufacturers in the LED industry, and market competition is intensifying. Under an oversupply situation, LED lighting products Average Selling Price (ASP) will fall, and bring overall industry profits down.


The surge of investments in the LED industry has outpaced industry expansions, explained Hangzhou Yuzhong Gaohong lighting Electrical Equipment Chairman Zhang Linfu. LED industry entry levels have been low due to lack of standards. With large numbers of manufacturers swarming into the industry, stable industry development has been undermined.


“LEDs will gradually replace CFLs, but LED’s long lifetimes will trigger industry restructures a few years later,” said Zhang.


A single 3W LED lamp, 5W CFL, and 25W incandescent bulb have the same light efficiency. As LED technology matures, LED lamps will have even longer lifetimes, and will last 25 times longer than incandescent bulbs, and more than three times that of CFL.


Therefore, manufacturers are focusing on expanding LED product applications. Future LED applications will extend beyond lighting, as well as periphery applications.


“Expanding lighting applications will become a major global lighting development trend,” said Li. “International manufacturers including Philips and Osram are also working on this issue.” Shanghai INESA and Chinese consumer electronic manufacturer Xiaomi have reached an initial agreement to collaborate on developing smart lighting and controls. Streetlights might also become the entry point for smart cities in the near future.



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Lite-On Technology Revenue Up in May 2014


Lite-On Technology’s (Lite-On) consolidated revenue from all subsidies and business sectors for May 2014 continued to grow due to rising end-market demands and market shares that have contributed to increase in company core products.


Compared to the previous month, the company’s total revenue for May 2014 including lighting, server, communication and memory business sector was up four percent to NT$ 19.69 billion (US $660 million), or a Year-on-Year 19 percent increase. Lite-On’s consolidated revenue for the first five months of 2014 grew 14 percent to NT$ 90.35 billion.


Lite-On’s optoelectronic division clinched 29 percent revenue shares, with LED components and lighting products benefiting the most from market application growth especially in IT application and rising market demands. The company’s overall revenue in May 2014 continued an upward climb, with continual expansion in camera modules and high-end products. Product shipments have also been successful. Under smartphone and tablets expanding market share, revenues YoY growth have doubled.



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Monday, June 9, 2014

Sumitomo to Expand GaN-on-SiC Device Production with AIXTRON System


Sumitomo Electric Device Innovations, Inc. (SEDI), Japan, has ordered an AIXTRON CRIUS MOCVD system to be delivered with 4-inch wafer configuration in order to boost production of gallium nitride on silicon carbide devices for RF data transfer applications. The purchase was made in the first quarter of 2014 for delivery at SEDI’s Electron Devices Division in Yokohama in the third quarter.


SEDI is preparing for a ramp-up in demand expected to begin in 2015 and chose the AIXTRON system due to its unmatched reputation for 4-inch wafer uniformity and precise process control, which is especially important for device production on cost-intensive silicon carbide wafers. The new reactor will be equipped with optional features such as dynamic gap adjustment, ARGUS in-situ temperature control, and EpiCurve TT metrology system. The ARGUS monitoring device provides full wafer mapping in real time for optimum control of the growth process. Extended flexibility is enabled by allowing the adjustment of the process gap between the showerhead and the substrate.


Sumitomo Electric Device Innovations, Inc. has an established industry reputation for providing some of the best RF components available. The company already has a range of GaN HEMT (High Electron Mobility Transistor) devices on offer for radar, mobile phone base-stations, and general applications. These GaN-on-SiC HEMT devices enable high power amplification at operating frequencies of up to 14 GHz RF.



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Hubbell Lighting and Totus Solutions Enter Strategic Partnership


Hubbell Lighting, a world leader in lighting innovation, and TOTUS Solutions, Inc. based in Austin, Texas, the leading provider of outdoor lighting based security platforms, announced today a strategic partnership to develop outdoor light fixtures with state-of-the-art surveillance technology.


With over 125 years of expertise in the electrical industry, Hubbell Lighting is a true innovator in the advancement of lighting and controls technologies that dramatically improve efficiency and reduce costs for virtually any lighting application. Under the new partnership, select Hubbell Lighting outdoor fixtures will be available with TOTUS Solutions’ surveillance technology. TOTUS Solutions has combined into a single integrated solution superior megapixel IP video surveillance, multi-day media storage and secure wireless communications, transforming passive surveillance into Active Deterrence™ to help prevent and deter crime instead of just recording it while it occurs.


“Our partnership with TOTUS Solutions adds an entirely new dynamic to Hubbell Lighting’s value proposition. Not only can we assist our clients with their lighting, energy efficiency and building automation needs, but we will now offer video surveillance, two-way audio communications and advanced site analytics,” said Richard Abernethy, Vice President of Hubbell Outdoor Lighting Brands.


“We are excited to work with Hubbell Lighting and their engineering experts to enhance their outdoor fixtures with our advanced surveillance technology,” said Gregory Williams, CEO of TOTUS Solutions.


This week at LIGHTFAIR International, Hubbell Lighting will display Sterner Lighting’s Executive RT-21 LED fixture with TOTUS Solutions’ Active Deterrence™ surveillance system. The system utilizes a hemispheric 360o view camera with recording and real-time viewing along with 2-way audio for live listening and communication via an amplified speaker. Fixture-to-fixture data transfer takes place through a 900 MHz wireless auto-mesh network.


To learn more about the Hubbell Lighting and TOTUS Solutions partnership, visit Hubbell Lighting’s booth (#925) at LIGHTFAIR International 2014 at the Las Vegas Convention Center or http://ift.tt/1md8cGw. You can also monitor all of Hubbell Lighting’s action at the show by following their Facebook, Twitter and LinkedIn pages.



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Printable, Robotic Lamp Can Build Itself





A team of researchers led by Robert Wood, Core Faculty member at the Wyss Institute for Biologically Inspired Engineering at Harvard University, has developed a proof-of-concept lamp that can be printed out and can assemble itself. The self-folding elements and main structure of the lamp, the sensors, and most of the wiring can all be printed out with a special kind of printer. The self-assembling lamp also includes a mechanical switch and a capacitive touch sensor. The mechanical switch can be used to open or close the printed electrical contacts, while the touch sensor can be used to switch the lamp on or off or adjust the brightness of the LED.


LEDs: Big lights come in small packages



Light-emitting diodes (LEDs) were first commercially used in the 1960s as replacements for neon and incandescent lamps found in expensive laboratory and electronic test equipment. The cost of infrared and visible LEDs units was so steep back then that there was limited practical use. These days, the technology has found its way in diverse applications ranging from consumer electronics to industrial, automotive headlamps, traffic signals, billboards and aviation lighting.

The use of LEDs in lighting applications has soared over the past decade because of advantages such as longer lifetime and lower energy consumption compared to incandescent light sources. However, manufacturing costs continue to hamper its uptake. Gallium nitride (GaN) on sapphire substrate technology, developed in the early 1990s and provided the foundation for high-brightness blue LEDs, is currently the most commonly used production process. Gallium nitride on silicon (GaN-on-Si) is now emerging as a less costly alternative to sapphire.



Brilliant Light Guides


When you need a thin light-emitting surface, what's the best alternative to expensive and less-than-efficient OLEDs? Edge-extracting light guides would certainly be in contention.


At Lightfair 2014, Bill Reisenauer and I met up at booth 1546, Global Lighting Technologies. Brett Shriver, GLT's vice president of sales, took us through the characteristics and inner workings of the company's flagship light guides for general illumination. (This is a small but growing part of GLT's business, which also includes LCD and graphics backlighting.)


(image: GLT)

(image: GLT)



I didn't hear that this product line has an overall name or designation, but by the time I arrived, Brett was already into the details with Bill. The company's website doesn't indicate any particular product name, though.


Custom

GLT is set up to custom-design light guides to the specifications of its customers and then manufacture them in high volumes. A lighting company such as Hubbell or Juno (not necessarily actual GLT customers) might approach GLT with specs for a luminaire it wants to produce and sell.


Let's say the light-emitting surface wants to be 1 mm thick, lit with LEDs on two edges, to produce a given number of cd/mm2 at a given CCT and CRI. GLT may recommend particular lines of LEDs to investigate. Or the customer may come in with the LED supplier already identified. A further requirement for our hypothetical luminaire is that it has to send 60% of its light downward from one surface and 40% upward from the opposite one, in a particular designated spread and pattern -- and not necessarily the same pattern from the two surfaces.


Oh, and the light-emitting surface must be curved. Maybe even bendable.


I was surprised to learn that GLT can design a light guide that meets such demanding specs.


Manufacturing

It starts with figuring out the characteristics, proportion, and density of the nano-lenses that will be embedded into the light-guide medium. The parameters are adjusted to produce the desired spread and distribution of light, given the characteristics of the emitters. A production line is tooled up (normally, the customer owns the rights to the tooling). Production can be either by a roll-to-roll process -- suitable for higher volumes -- or by injection molding for lower volumes. There are some subtle differences in the physical characteristics of the light guide (in smoothness, for example), depending on which process is used.


If you look at the catalogues of lighting companies large and small for planar, OLED-like luminaires -- 1'x1', 1'x2', and 1'x4' are common sizes -- the chances are good that GLT designed and made their light guides.


GLT has about 1,600 employees worldwide. It is headquartered in Taiwan and listed on the stock exchange there. It has manufacturing facilities in the Shanghai and Hong Kong regions in China. Sales and engineering is based in the Cleveland area (home of GE Lighting, by no coincidence). The company in its current form is a result of technology spinoffs and corporate mergers stretching back decades. It has a million square feet of manufacturing space currently.


We met GLT briefly a year ago in a discussion of Rambus's patent practices. In 2009, Rambus acquired a portfolio of lighting-related patents from GLT for $26 million.


— Keith Dawson Circle me on Google+ Follow me on Twitter Visit my LinkedIn page , Editor-in-Chief, All LED Lighting


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Future Lighting Solutions to Feature Retrofit, Outdoor, Industrial and Architectural Lighting at GILE 2014


Future Lighting Solutions will be participating in this year’s Guangzhou International Lighting Exhibition, being held at the Guangzhou Import and Export Complex from June 9th – 12th, 2014.


Now in its 19th year, the show has earned a solid reputation as being an informational and networking opportunity for lighting professionals from around the globe. The event features more than 2,600 exhibitors and attracts over 110,000 visitors from all over the world.


Exhibiting at Hall 10.2 A02, Future Lighting Solutions will be showcasing the latest products and technologies for outdoor, retail, office, industrial, architectural, entertainment, and retrofit lighting, along with lighting solution components.


Some of the products the company will be featuring from its vast portfolio include high-, mid-, and low-power LEDs, Chip On Board LEDs, optical solutions, power modules, passive and active thermal solutions, lighting controls, and remote phosphor technologies.


Future Lighting Solutions’ world-class team of lighting experts, along with global lighting resource centers, supply chain solutions and network of specialized partners provide a powerful combination of support and resources to ensure the highest quality solid-state lighting solutions available in the market today.


“We look forward to hosting visitors in our booth and sharing the many ways we help our customers by making LED lighting solutions simple, affordable, effective and efficient,” said Jamie Singerman, Vice President of Future Lighting Solutions.


For more information about Future Lighting Solutions, visit http://ift.tt/1fZ6Mub



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More Individual Light, Please!


In Europe, the planning of offices is governed by a litany of standards and guidelines. But where lighting is concerned, users' individual preferences, work-related requirements, and employees' emotional well-being are as important as technical specifications.


Zumtobel, a supplier of integrated lighting solutions, and the IAO Fraunhofer Institute for Industrial Engineering are currently investigating this issue in a long-term global study entitled "The Light. Global User Study on Perceived Lighting Quality in Offices," for which so far 2,643 office workers from Europe, Asia, Australia, and the US have been interviewed. Although the study will continue until the end of 2014, the initial findings already make for stimulating reading.


The aim of the study (and by the way, you can still join in!) is to find out what sort of lighting in the office is perceived as particularly pleasant. This information will then be used to draw up a global "map of light" providing details of what lighting arrangements are best suited for particular individuals in specific situations.


Hardly surprising

The findings are hardly surprising when we bear in mind how we work best. The majority of the respondents prefer individually controllable LED lighting with a variable color temperature, a blend of direct and indirect components (82.5%), and illuminance exceeding 800 lux (60%) -- a preference which declines with increasing age -- even though office workers find 500 and 800 lux to be the most pleasant at their desks.


In addition, the majority of users favor lighting that can be flexibly adapted to different tasks. Interestingly, color temperature preferences have been found to vary widely between 3,000K and 6,000K, with 4,000K and 5,000K easily the most popular.


Artificial light isn't needed just in the winter, when 60% of respondents use more than seven hours of artificial light -- 33% said they used this amount of artificial lighting in summer, too. The reason is that many office workers (61.2%) don't sit near a window. Accordingly, daylight and artificial lighting must be organized with their needs in mind.


Honored in the breach

Unfortunately, 57.4% of the respondents said they had no or only limited ability to adapt the lighting in their office to their needs. This is a shame, because using a smart, daylight-controlled LED lighting system wouldn't just solve this problem, it would also save energy. Moreover, the study showed that innovative lighting solutions that are smart and individually controllable actually boost employees' health and well-being.


Although the study is still underway, given the large number of participants, the preliminary findings are already representative and certainly very thought-provoking. The provision of light for each visual task, tailored to the circumstances of each room, is something which is still neglected in offices around the world. One reason for this could be that good lighting solutions are still hard to find. Furthermore, many business owners balk at the prospect of investing in good, employee-controlled lighting. We can only hope that this study, once it's completed at the end of the year, will prompt a fundamental rethink.



San’an Opto Fujian Subsidiary Receives RMB 11.58 M Subsidy


San’an Opto announced recently subsidiary Fujian Jingan Optoelectronics RMB 11.58 million (US$ 1.86 million) subsidy application was approved by Anxi County Bureau of Finance in China. The subsidiary has received the full sum of the subsidy.


Contents of the subsidy includes becoming an enterprise that actively develops energy efficient and environmental products, establishing energy efficient society, and meeting county government targets of nurturing advanced innovative technologies. The subsidy also urges for LED optoelectronic supply chain developments, and offers sapphire substrate subsidies.


According to China’s enterprise accounting standards, the subsidy received will be recorded as current income.



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Sunday, June 8, 2014

Apple Rumored to be Releasing 5 Million OLED Display iWatch in Late 2014


Latest Apple iWatch market rumors point towards OLED touchscreens, and health-related data collection ranging from sleep activity to blood oxygen levels, according to a recent Nikkei report.


Apple is rumored to be fairly confident in the new device, and will be releasing 3 million to 5 million units in late October this year. If the rumor proves true, the number of smart watches released by the Cupertino company would exceed global smartwatch sales in 2013, noted an appleinsider report.


Nike’s expected exit from the wearable device could indicate a closer iWatch partnership with Apple. Nike is said to be turning its focus on services and less on hardware.



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Tridonic Connection Technology Breaks Free from Zumtobel Group


Tridonic Connection Technology will be trading under its former brand name Electro-Terminal as an independent company as of October 31, 2014, and no longer be part of the Zumtobel Group, according to a recent notice sent by company management.


The former Zumtobel subsidiary that specializes in connectors announced local management in Innsbruck, Austria and a long-time logistics partner have taken over all shares of the company with retroactive effect as of April 30, 2014. Tridonic Connection Technology will be trading under the old brand name Electro-Terminal that was established 50 years ago.


The transition is planned to take place within the next few weeks, as Tridonic sales team and connection technology will start the transfer.


(Author: Judy Lin, Chief Editor, LEDinside)



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Place Lamp: HUE hack



Seattle-based designer Samuel Stubblefield created a cylindrical lamp prototype that lets the user connect it to their smartphones and set up several digital geofences around it to enable the lamp to communicate the user’s whereabouts. The Place Lamp is a hacked full-color cylindrical LED bulb that connects to the user’s office WiFi and to their smartphone through an app, and changes color depending on the distance of the user relative to the lamp. The lamp glows brighter as the user gets closer to the office, and eventually glows the brightest and functions as a table lamp when the user finally arrives at their desk. The lamp turns off when the user leaves the office.

Lights, lasers and LED: How concerts have shifted from songs to spectacles



Over time, smoke bombs gave way to pyrotechnics; levers and pulleys gave way to hydraulics, then robotics; strobe lights gave way to lasers; video advanced from oil on a projector lens to complex LED displays. Whenever Lady Gaga acts as the ringleader in a circus of flames, explosions and spurting fake blood; whenever Taylor Swift surfs on a huge floating robot catwalk; whenever Pink spins in a spherical cage 30 feet high — that’s because of generations of tinkerers and pioneers, beginning with Volz, who risked their fingers for theatrical immortality. “It’s totally changed from what it used to be,” says veteran effects man Jimmy Page Henderson, 67, vice president of Syncrolite, a Dallas lighting company. “Everything’s digital now. It’s so complicated now, you almost need to have a degree to go out and become a roadie.”


SEL and Nokia Develop Foldable OLED Panels


Semiconductor Energy Laboratory (SEL), Advanced Film Device (AFD) (a subsidiary of SEL) and Nokia developed OLED displays that can be folded into two or three, according to a latest report by Nikkei Technology.











SEL and Nokia's newly developed foldable OLEDs. (Photo Courtesy of Nikkei Technology)

The display was announced at SID 2014, which took place from June 1 to 6, 2014 at San Diego, U.S.


One of the two book-type displays can be folded in half like a book, while the other a three-fold display. The OLED displays are 5.9-inch when unfolded, with pixel count and resolution at 1,280 x 720 and 249 ppi respectively. The OLEDs were made using white light-emitting OLEDs and color filter.


The book-type and three-fold displays can be bent up to curvature radii of 2mm and 4mm, respectively. They can be bent more than 100,000 times, SEL said. For further reading please click here.



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Friday, June 6, 2014

LED Signs are Friends of the Earth

Wonder how outdoor and indoor programmable LED signs help save the environment? Traditional LED signs may cost less but constant replacement is more expensive in the long run. Nowadays, sign manufacturers have programmable message boards that clients can easily update without manually replacing individual letters, which can be too labor-intensive.









Image source: Specialty Products USA



This task of changing letters each time a new promotion or event happens is not only daunting, but harmful to the environment. By using programmable LED signs, all one needs to do is use the remote and program the sign from a remote computer. Programmable message boards can take your business to the forefront with features such as animation, ease of access, and constant updates which users can easily control.

The amount it takes to change a broken or damaged lightbulb for traditional LED signs takes longer than the amount of time you’ll need to update the message on your programmable open signs. The time you save can be used for more productive activities, such as helping more customers or generating more ideas for future promotions.


To add a more personal touch to your programmable message board, a simple thank you that appears at a specific time will do. You can alternate this with different messages such as announcing special events, promotions, or simply displaying your store hours. Take advantage of the brightness and the various colors your programmable message board can display. Vivid hues attract the attention of roving customers’ eyes and it’s best to keep your messages brief but concise.


Moving images or graphics are far more attractive than stationary ones. Use the crawl option or have your image or text move up and down the LED sign for more activity. With these animated programmable open signs made of LED displayed outside your establishments, foot traffic and sales will definitely increase.


Indoor programmable LED signs, on the other hand, can display specials of the day or the prices of the products your business offers. Whether you decide to purchase an indoor or outdoor programmable message board, keep in mind that it’s worth the price because it’ll help increase name recall, product awareness, and most especially revenue sales.






IntelliLUM Releases Easy to Install Smart LED Luminaires

With almost 15 billion square feet of office space in the U.S. alone, the market potential is enormous. The DOE estimates in the U.S. Lighting Market Characterization report that 81.2 billion square feet of Commercial Building space contains over 2.1 billion light fixtures and that 71.8% of commercial fixtures are linear fluorescent fixtures. This translates to more than 1.5 billion linear fluorescent fixtures in Commercial Buildings in the U.S. alone with another 10 billion square feet of Industrial Buildings.


It is estimated that commercial lighting demand consumes up to 25% of the total energy used in the U.S. alone. In addition, the Department of Energy (DOE) estimates that linear fluorescent lighting represents the highest electricity consumer at 42 percent of energy used for lighting.


"Conceived and designed by architects and engineers serving commercial lighting marketplaces, the IntelliLUM systems are designed to meet specific market demands at three fundamental levels: Improved light quality, significant installation labor and electrical usage savings and meeting new governmental code requirements," said Greg Brown founder of IntelliLUM. "IntelliLUM has patents pending for an autonomous fixture with code compliant performance. We designed a fixture that exceeds the new 2015 codes, outperforms the current competition and installs with a single installer in less than 3 minutes."


For more information about the IntelliLUM intelligent lighting solutions and the QuickLED family, visit www.intellilum.com or see them at the Lightfair International show in Las Vegas, June 3-5, 2014 - Booth 6550.





IR Introduces Highly Integrated LED Drivers Control IC

“The IRS29831 provides an extremely competitive and efficient solution for both isolated and non-isolated Flyback LED drivers. The device offers single stage primary side regulation with a high power factor and low Total Harmonic Distortion (THD) along with open and short circuit protection”


Employing accurate primary side power regulation, the IRS29831 integrates an LED driver control IC and power MOSFET utilizing 700V technology, and features high-voltage start up to offer a simple cost-effective single stage solution while maintaining a high power factor and low Total Harmonic Distortion (THD) for improved efficiency.


“The IRS29831 provides an extremely competitive and efficient solution for both isolated and non-isolated Flyback LED drivers. The device offers single stage primary side regulation with a high power factor and low Total Harmonic Distortion (THD) along with open and short circuit protection,” said Peter Green, LED Group Manager, IR’s Energy Saving Products Business Unit.


IRS29831-based LED driver circuits also offer smooth, flicker-free dimming with triac based dimmers. The device can also operate over a wide input voltage range. Protection features include hiccup mode open-load/over-voltage protection, cycle-by-cycle primary over-current limiting, and output short circuit protection.


The IRS29831 also features critical-conduction mode operation with discontinuous and burst modes at light load as well as the ability to allow users to configure isolated designs without an opto-coupler. Available in an 8-pin DIP package, the IRS29831 has a fast startup, low quiescent current, ESD protection and noise immunity.


Availability and Pricing

Pricing for the IRS29831 begins at US $1.25 each in quantities of 10,000-units. Production quantities are available immediately. The devices are lead free and RoHS compliant. Prices are subject to change.





Molex Releases Plastic Substrate Interconnect for LED COB Array Holders

“Space constraints have driven lighting manufacturers to focus on providing greater light output in smaller packages,” said Dave Rios, new product development manager, Molex. “The Molex PSI solution is unique in that it not only offers a low profile that allows optics to be placed more closely to the LED, it also easily and reliably connects power to the array.”


The PSI system is ideal for high-density and high-light output applications such as downlighting (track, pendants and linear) and area lighting (roadways, parking lots and wall packs). LED Chip-on-Board technology ensures strong future development capabilities by allowing integration of additional components. The system supports a variety of potential PSI designs including:


• Circular: 22.50 by 22.50mm COB size; 36.00mm outer diameter and 2.0mm height profile


• Rectangular: 22.50 by 22.50mm COB size; 36.50 by 28.50mm outer dimension and 2.00mm height profile


• Customizable shapes, sizes, mounting hole patterns and interconnects


The solderless Pico-EZmate harness attaches to the LED array holder with no special processes or tools for an efficient connection that minimizes contact with the array to reduce the risk of damage. The vertical snap-to-mate connection, positive-lock latching feature and gold plated contacts deliver superior reliability. The harnesses will be offered in three wire gauge configurations and various lengths for a range of initial harness options based on application need.





GE 100W Replacement, ENERGY STAR LED Achieves 100 Lumens Per Watt

“We have a team of dedicated engineers across the globe constantly working to reach optimal efficiency and quality of light with GE LED lighting,” says Linda Pastor, GE LED Lighting product manager. “Our 100-watt replacement LED provides the same soft white light, dimming capabilities and familiar A-line shape consumers love, but it gives them LED options with more brightness. Plus, at a rated life of more than 22 years, consumers can put this bulb in and forget about it.”


At 1600 lumens and 16 watts, consumers looking for brighter LED bulbs for reading lamps or task lighting now have a realistic energy-efficient LED lighting solution, providing optimal energy savings for their monthly energy bill. Already very competitively priced, consumers will have utility rebate offers in select markets, making this bulb even more affordable; and better yet, it will pay for itself in the short term. Over the life of this bulb, or more than 22 years at three hours of use per day, consumers can expect to save more than $230.


GE Lighting debuted its first generation design of a 100-watt LED in 2012. This original design utilized a synthetic jet (an alternative to a fan), which helped manage the thermal load. As LED lighting design has dramatically evolved over the past few years, GE perfected the design to manage thermal loads using fins, closely emulating the shape and design of a traditional incandescent bulb.


To calculate a home’s energy-saving potential by switching to LED lighting, GE Lighting has developed a new tool, an LED energy-saving calculator. This tool translates energy savings into relatable terms for consumers, making the switch a no-brainer.





Samsung Introduces New LED Modules for Flat Lighting Applications – the M-Series

“The Samsung M-series offers tremendous convenience to LED lighting fixture makers with one of the most reliable and design-friendly feature-sets in the industry,” said Bangwon Oh, senior vice president, strategic marketing team, LED Business, Samsung Electronics. “Through the new M-series and future Samsung LED solutions, we will increase our support for the LED marketplace by providing greater differentiated value and reducing the time to market for LED lighting makers, while accelerating market innovations for LED lighting components.



Underscoring their reliability, the M-series modules feature Samsung’s LM561B LED package, which has successfully completed 6,000 hours of LM-80 testing.

The M-series includes three modules, the LT-M552A, M552B and M552C that have the same dimensions – 18x550x6 mm. By offering identical measurements and delivering a variety of light output options, the three modules simplify the task of designing LED luminaires.



In addition, the 18mm width of M-series readily replaces T5 light fixtures, which usually have a diameter of around 0.6 inches or 16mm. It results in more design flexibility when replacing conventional fluorescent tubes or LEDs in the same luminaire.

The Samsung M-series covers a lumen range from 1500lm to 2500lm based on a light efficacy level of up to 152 lm/W. By combining up to four M-series modules, a total light output of 2000lm to 7000lm can be achieved for luminaires. For example, if a luminaire requires 3500lm, combining two LT-M552B will provide approximately 4120lm, when assuming an optical efficiency level of 85 percent.



Samsung’s new M-series will be commercially available later this month.



About Samsung Electronics Co., Ltd.

Samsung Electronics Co., Ltd. is a global leader in technology, opening new possibilities for people everywhere. Through relentless innovation and discovery, we are transforming the worlds of TVs, smartphones, tablets, PCs, cameras, home appliances, printers, LTE systems, medical devices, semiconductors and LED solutions. We employ 286,000 people across 80 countries with annual sales of US$216.7 billion. To discover more, please visit www.samsung.com.





Lightfair 2014: Two More Things


Apple's late founder Steve Jobs famously ended his keynote product announcements with "one more thing." Here are two more from the 25th running of Lightfair, just concluded in Las Vegas.


TerraLux's ROI tool

This is a very slick app for an iOS tablet. It's an aid to calculating ROI on a building upgrade. It allows a lighting contractor or specifier to hand the potential client a full report in PDF form, quoting expected energy savings and time to ROI -- within minutes of visiting and surveying a property. The report contains all the information in neatly packaged form that various levels of decision-makers will need in order to sign off on such a project -- the facilities manager, the CFO, and the CEO.


The specifier can take pictures of the facility using the tablet's camera, and these will be incorporated into the report. Once the numbers and types of fixtures are enumerated, the app recommends suitable replacement products and calculates out the costs. It's one visit and done for the early phase of a project proposal.


An online "quick audit" demo gives a flavor of the app, producing a 1-page summary report with time to payback.



The app is available free from TerraLux's site (visit this link on your iPad). It perhaps falls into a class of tools we discussed a few weeks back, along with Osram's Info Base package of resources for product designers. It offers major convenience and labor-saving, at the cost of favoring one company's products to meet project needs.


TerraLux's Matthew Sallee told me that the app has been available for about a month but that Lightfair was its coming-out party. A number of lighting contractors have downloaded a copy, but it's early days in terms of learning how useful it will prove to be in the field. But on quick acquaintance, TerraLux's app looks well thought-out and beautifully presented.


Cree's 3-way bulb

Cree's A21 bulb is characterized as equivalent to a 30/60/100 Watt incandescent. In fact the lumen values are 320/820/1620 lm. Input power is 3/8/18 Watts, so the efficacy is 107/103/90 lm/W for the three settings.



According to Ed Rodriguez's analysis of the Feit/Utilitech 3-way LED bulb, in terms of popularity the traditional incandescent 30/70/100 Watt 3-way is down the list, after 50/100/150 and 100/200/300. One reason for its lesser popularity is the small perceptual difference between the light output at 70W and 100W, due to the logarithmic response of the human visual system. The analogy Ed used was that of a currency system featuring $1, $9, and $10 bills. This complaint applies to some extent to 3-ways in general.


Cree makes a point that its 3-way's highest setting does not disappoint. Indeed 1620 lm is a reasonable level of light output to equate to a 100W incandescent, and it should be a noticeable bump up from the middle setting at 820 lm.


I saw the 3-way only in its packaging at Lightfair, not in use. The bulb is available now through Home Depot online and should be rolling out to physical stores within days or a week or two at the most. It is priced at $24.97, which Cree claims is cheaper by far than competitive offerings. I found this Feit 3-way ("30/70/100W," 600/1100/1600 lm) at Amazon, for $45.00. It's a yellow remote-phosphor design and it looks weird.


It's a safe bet that Cree is working on a 50/100/150 Watt equivalent.


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— Keith Dawson Circle me on Google+ Follow me on Twitter Visit my LinkedIn page , Editor-in-Chief, All LED Lighting



Thursday, June 5, 2014

Lightwave RF Smart Dimmer tackles LED light flicker



If upgrading your lights to LEDs has left you in flickering hell, Lightwave RF's Smart Dimmer could give you smooth illumination and remote control. The British company's Smart Dimmer claims to fix the tricky power supply issues that lead to extreme flickering or even complete failure when dimmable LEDs are fitted in ordinary dimmer switches. You can also use your smartphone or tablet to control your lights via WiFi or even from beyond the home using other Lightwave RF smart home components.

Houston strikes deals with CenterPoint for LED lights, bike trails




All 165,000 of Houston's streetlights will be converted to more efficient LEDs over the next five years, halving electricity use and cutting air pollution in what Mayor Annise Parker said will be one of the nation's largest such initiatives. Also on Friday, the city said it had struck a deal to open up land under power lines for the construction of hike and bike trails, the result of years of negotiations in Austin to enact necessary legislation and months of local discussions. Both the trails and streetlights announcements involved agreements with CenterPoint Energy.