China LED lighting factory

2014年6月30日星期一

Customizable designed downlights LED

LED downlights bulbs

Featuring Infusion™ technology, Lumination™ DI Series enables users to select preferred lumen output and color temperature to illuminate key products or focal points with switch of LED module. Color-mixing technology delivers 90+ CRI and very high R9 at all lumen levels and color temperatures. Available in 4 and 6 in. round and square shapes with lumen options from 1,000–4,000 lm, LED downlights are suitable for 10–16 ft ceilings in retail, commercial office, and hospitality applications.

More new LED downlights from GE

LED downlights

GE Lighting has announced the Lumination RI Series of LED downlights in 6-, 8-, and 10-in. diameter models delivering up to 4000 lm of high-CRI light for high-ceiling applications in settings such as retail. The company has also added the RS Series of solid-state lighting (SSL)retrofit products designed for use in existing low-ceiling incandescent, halogen, or compact fluorescent (CFL) recessed cans.

High-ceiling products

The RI Series is designed for installation into settings with ceiling heights ranging from 20 to 40 ft. SSL products are especially beneficial in such applications because of the maintenance requirements associated with legacy lamps. The long life of LED-based luminaires eliminates lamp replacement. The RI products are rated for 50,000 hours of life.

GE LED module product manager John Koster said, "With the long life and high lumen output of the RI Series, facility managers can rest easy knowing their maintenance dollars will no longer be going toward lifts and scaffolding for lamp replacements." Still, the RI Series does not compromise on performance with a CRI of 90 that can serve in high-end retail applications.
GE Lighting adds more LED downlights in Lumination family

The light source in the RI Series is the GE Infusion LED module that is based on the Zhaga Book 5 specification. That twist-lock module provides for future lamp-like upgrades or maintenance through field replacement and also the ability for GE to offer many different lumen and CCT packages up front with the same basic fixture designs. The company also used the Infusion technology in the first Lumination-branded downlights — the DI series announced at the end of 2013.

"GE incorporated the Infusion downlight module, which provides maximum performance and brightness of the latest LED technology and simple customization of a lighting scheme to best fit the environment," said Koster. The new series comes in 1000- to 4000-lm versions and in a choice of 2700K, 3000K, 3500K, and 4000K CCTs.

Retrofit LED downlights
Downlights LED

Meanwhile, the Lumination RS Series targets simple one-for-one retrofits in existing cans with minimal labor. The luminaires include an Edison screw base and clips that will hold the products in place after installation.

While the RI Series is intended at architectural specification-grade uses, GE considers the RS Series capable of serving in similar scenarios or as a contractor-grade product. GE specifically mentioned boutique, restaurant, hotel, and residential applications as targets for the retrofit products.
GE Lighting adds more LED downlights in Lumination family

Evidently, the RI series is not based on the Infusion technology. GE only offers the products in 2700K and 3000K options with a CRI of 80 and a rated life of 35,000 hours. But apparently those specifications match the target applications.

"With its clean design and simple installation, the Lumination RS Series is an ideal solution for low-ceiling retrofits," said Koster. "Long life and reduced energy requirements make them the perfect choice for budget-conscious applications."

OLEDs to match LED performance, says report

OLEDs from Osram

OLED panels will be on a par with LEDs in terms of performance by next year, according to a market report.

The report by UBI, a South Korean research company, said the OLED lighting market will still be very small in 2015, but will be able to match LED technology in terms of performance. The UBI forecast sees OLED panels reaching 100lm/W and 30,000 lifetime hours by next year.

The report suggested this would encourage quick growth in the OLED lighting market and predicted that will reach $4.7 billion in 2020.

But when Lighting contacted manufacturers to ask whether they agreed with the findings of the report, some felt OLED progress wasn’t quite as rapid. “Market research is a difficult story,” said Karsten Diekmann, head of products, applications and marketing in Oram’s OLED team. “It’s really hard to tell what will be the case in five to 10 years from now.”

“Our key year for performance is 2016, where we anticipate to break the 100lm/W barrier and to be technically competitive with LED technology. We showed a 65lm/W OLED at Lighting + Building this year, which is the same performance of CFL; but sadly nobody is interested in the performance of CFL. Everything is back to LED performance, which is the true benchmark.”

But OLEDs are catching up fast. Diekmann went as far as saying OLEDs are “developing twice as fast” as LEDs. Since 2010, where Oram had OLED performances of 20lm/W and a lifetime of 5,000 hours at L50, huge strides have been made. Today OLEDs are reaching 65lm/W and 15,000 hour lifetimes at L70, with three times as much brightness as before. “Comparing this to LEDs, you have to go back six or seven years to see a doubling of the performance,” Diekmann added.

He also pointed out that LED has a lot more losses than OLEDs do when it comes to thermal and optics. Therefore OLEDs don’t need to be the same efficacy at a component level, to perform as well as LEDs.

“Say you have an OLED component with 100lm/W,” he explained, “and an LED component with 130lm/W, and you built them into a system. Then you have to consider optical means for the LEDs where you have optical losses, and heat sinks for the thermal losses; so the system output it rather comparable. So on a system level, we anticipate OLEDs being comparable in two years.”

Pricing, however, is another matter. Diekmann predicts OLEDs won’t be comparable on price with LEDs until at least 2018 or even 2020 – and this is dependent on market adoption in the preceding years.

“The goal is clear,” he said. “OLEDs have to be competitive in pricing in order to succeed in the lighting market. By having a good technical performance two years from now won’t mean we can start selling OLEDs for the same price. First we need premium projects, new infrastructures, standardisation efforts; then you can start all these economy of scale factors.”

Osram hopes the automotive industry is going to drive the OLED market, and push the costs down for general lighting market adoption. “We think the OEMs in the car industry are desperately looking for possibilities to differentiate themselves from others to create branding by lighting, to have a certain fingerprint from their luminaires.” Diekmann said. “They will be the first adopters of OLED technology. With this we can increase our economies of scale and then move into the general lighting market with OLEDs.”

Hawaiian firm gives away 3,000 LED bulbs in 90 minutes


Kauai Island Utility Cooperative employees Didi Kajihara and Giselle Bucao prepare for the distribution of free Light Emitting Diode lamps Friday evening at the Kukui Grove Center while Stu Burley joins Jo Padran in waiting for the giveaway to start.

Nearly a thousand people stood in line Friday night for the Kauai Island Utility Cooperative distribution of three 60-watt equivalent light emitting diode bulbs per customer.

The free light bulbs, valued at more than $30, attracted a score of people who lined the mall from the Ross Dress for Less wall to beyond the McDonald’s restaurant as KIUC employees counted down the minutes to the 6 p.m. start.

KIUC gave away about 3,000 LED bulbs in 90 minutes.

“My wife is out shopping so I’m not going to get another three lamps,” said Marco Fanato of Wailua, waiting since 4 p.m. for the distribution. “Have you heard of ‘Christmas in July.’ This is it. This is a great project because it is beneficial to everyone — the county, the cooperative, and the people. They should give out more so we can change out all our light bulbs.”

Kathy Williams, KIUC energy services supervisor, said a lot of people have not switched to LED bulbs because they sell for between $10 and $15 each.

Jill Kouchi was thrilled with her package of lamps and energy-saving tips, extracting a bulb for a social media photo against the backdrop of the quickly-moving line of people.

LED bulbs use less energy than incandescent and compact flourescent light bulb, stays cool to the touch, and are designed to last nearly 23 years, states a KIUC release.

“KIUC is giving these bulbs for free to help reduce their monthly electric bills,” Williams said.

2014年6月29日星期日

Cheap high bright dimmable GU10 MR16 LED lamps 5W

Today, due to the Earth's greenhouse effect causing global warming, human ecological environment is deteriorating, has become a global The common-sense consensus. Therefore, energy conservation, development of low-carbon economy is not only an expedient to the energy crisis, it is an important behave to deal with the greenhouse effect caused by environmental threats for mankind survival.

LED lighting is a revolution in modern lighting, with unparalleled advantages, solid-state lighting, long life, no Pollution, energy-sa0ving lighting products than common lighting 50% -90%. it is sure that LED lighting technology is the Direction of future development. According to the International pundits predicted, twenty-first century will enter the new era of LED lighting as the representative, it is called the fourth generation light source, LED development
history is only a few decades, but the applications in the field of lighting is new technologies, Which gradually increase in luminous efficiency, LED application market is more widely, especially in the global energy shortage,LED green lighting prospects caused great attention in worldwide. The industry believes that Two years in the future will replace incandescent, fluorescent and incandescent light, and become the largest and most potential market.

LED lamps have the following characteristics:
1) Long working life: LED is as a solid light-emitting device, with a longer Work Lifetime than other light-emitting devices. Its brightness half-life is usually up to one hundred thousand hours. If replace to traditional car lamps by LED lights, the Life will be much larger than the lifetime of the car, with a lifetime without repair and replacement features.
(2) Low power consumption: LED is a low-voltage the device, so at the same brightness, minimal power consumption, can be largely Reduce the amount of Energy consumption. On the contrary, with the development of future technology and materials, will have a higher luminous efficiency. if all Japanese lamps replaced with LED, two large-scale power plants can be reduced, and the environmental protection is very beneficial.
(3) Fast response time: LED generally responds in tens of milliseconds(ns) inside, it is a telling device,This also Is unmatched by other sources. Production car with LED brake light at high speed, largely increases Vehicle safety
(4) small size, light weight, resistance to fight: This is an inherent characteristic of the semiconductor solid device. color LED can be made as various Clear exquisite display.
(5) Easy to dimming, toning, big controllable: LED as a light emitting device, control brightness by Changing current, LED can also be got color change and adjustment by configuring to different wavelengths . Therefore, LED display is easy to reach needs of various applications by the electronic control. In addition, the application of LED light source is not restricted in principle, and malleable, could be extended to achieve modular assembly. Currently a large color display screen is not other except LED.
(6) LED light does not exist, such as mercury, lead environmental pollutants, does not pollute the environment. As LED light source called a "green" light,it is well-deserved.

HM lighting aim at the market of great amount of traditional  glass halogen spotlights, in order to promote the LED lights,LED spotlight Glass can replace halogen spotlights, through research and development for some time, and finally developed a glass dimming LED Spotlights GU10 5W, the characterized for the spotlights is with high brightness, luminous flux of 400lm, good dimming effect, compatible with a variety of triac dimmers, long life, up to 20,000-30,000 hours.
This model can also be with MR16, E27 lamp holder, 5W Dimmable LED MR16, is with input voltage AC120/230V, without 12V adapter, directly replace the high-voltage halogen spotlights, and good dimming effect.For more specification,you can consult the website.
In order to the promotion of LED spotlights, the price for 5W dimmable lamps is only as usd2.66.
Dimmable GU10 5W

AC120/230V Dimmable MR16 5W

2014年6月28日星期六

Bridgelux expands V series of COB LEDs

COB LEDs

Bridgelux is to introduce its new V10 and V15 LED array products at Light Fair International (LFI) 2014 in Las Vegas.

These devices further expand the company's V Series line of LED Chip on Board (COB) light sources. These products extend the technology and performance of Bridgelux Vero line of LED arrays, featuring high flux density in small light source size packages.

The V10 and V15 products are particularly well suited for commercial and residential lighting markets requiring high quality and tight beam control.

Since the launch of the V Series product line in September 2013 the technology has seen big adoption,shipping millions of units in seven months on the market, in more than twenty countries, representing a quarterly growth rate of 52 percent.

In addition to providing high quality light with high flux density, the Bridgelux V10 and V15 LED light source products offer a compelling total cost of ownership advantage over incandescent, halogen, and fluorescent technologies with greater energy efficiencies and a projected lifetime of over  twenty years. The V10 and V15 products produce up to 118 nominal lumens per watt (lm/W).

Typical applications for the V10 and V15 light sources include down lights, track and spot lighting, and landscape lighting with V15 being an ideal replacement for 35W ceramic metal halide luminaires. Nominal lumen outputs range from 1,000 to 3,000 lumens for V10 and V15 respectively.

"Bridgelux is laser focused on paying close attention customer needs and anticipating market requirements," says Brad Bullington, CEO of Bridgelux, "the V10 and V15 additions to the V Series product line demonstrate once again our responsiveness and commitment to expanding the growth of LED lighting across application segments."

The V10 and V15 COB modules are available in variety of CCT and CRI options and are compatible with optics, drivers, and holders readily available from third party suppliers. With more than 9,000 hours of LM80 test data and R9 values that exceed California Energy Commission requirements for luminaires and lamps, these new V Series arrays support Energy Star and other rebate programs while also including ANSI compliant 3-step binning, thereby reducing SKUs while bringing consistent high quality white-point light to this new segment.

Also, next week at LFI, Bridgelux will be showcasing several new additions to the Vero Series (COB LEDs with a ten year warranty) including multiple ultra-high CRI and cool white light combinations, specific CCT/CRI combinations for healthcare, entertainment, bakery, grocery, deli and textile applications along with new Zhaga options.

Osram claims world's most efficient LED lamp

An Osram research team has claimed to have succeeded in constructing the most efficient LED lamp in the world which achieves an efficiency level of 215 lumens per watt.

The lamp in tubular form consumes only half the power of currently common fluorescent and LED tubes, and also achieves significantly superior colour rendering.

The record-breaking light source was developed by the central research department together with the optical semiconductor and lamp business units.

"This research success represents yet another innovation push with LEDs and is based in particular upon our strategic position as integrated lighting experts," explained Peter Laier, Osram’s Chief Technology Officer and executive board member responsible for the company’s general illumination business.

The lamp, which will be revealed at the Light+Building 2014 event in Frankfurt, Germany, claims to achieve an almost unprecedented efficiency level of 215 lumens per watt, and therefore generates as much light (lumens) as currently common fluorescent or LED tubes with only half the power consumption (watts).  The device consumes 19 W of power.

In contrast to research demonstrations until now, the lamp with a length of 1.20 meters has an identical length to traditional fluorescent lamps. The peak efficiency is achieved both with warm and cool white light.

The record is based on a combination of high-efficiency red LED chips and green-whitish Osram LEDs containing a self-developed phosphor that is approaching production maturity. Materials with maximum reflection factors are also used as well as an innovative, integrated optic for minimizing absorption. The lamp is operated with a specifically developed control unit featuring efficiency of 95%. The demonstrator emits 3,900 lumens of warm white light (3000K) and achieves a very good colour rendering index (CRI 90).

The new forms of technology used will be integrated step-by-step into OSRAM product development, and the company is expecting series products with these forms of technology from 2015.

Independence LED tube more efficient than average

Independence LED tube
Independence LED Lighting, a US manufacturer of commercial light-emitting diode (LED) lighting, announced that according to US Department of Energy (DOE) report data, Independence LED tubes are 15% more efficient in lumens per watt (lm/W) than the average from the field of more than 30 LED manufacturers.

In the report, the DOE found that LEDs are more efficient than ever. The CALiPER Summary Report 21: Linear (T8) LED Lamps states in its conclusion: “Compared to previous CALiPER testing of the same product type, there have been notable performance gains, with the efficacy of many lamps now equivalent to or exceeding that of fluorescent lamps.”

The 2014 report indicates that, based on their design, Independence LED tubes are potentially safer than competitive products. Typical fluorescent fixtures bring line voltage into the fixture via alternating current (AC) and then convert it through the ballast to lower-voltage direct current (DC). Internal driver LED tubes override the ballast, creating a potential safety issue. As the DOE says in its March 2013 CALiPER Exploratory Study: Recessed Troffer Lighting: “There is ongoing concern in the lighting industry over the safety of fluorescent troffers when they are converted using LED T8 lamps or retrofit kits.” The 2014 CALiPER Report addressed this safety concern directly, specifically citing the Independence LED product as one of the safer options.

De-lamping is becoming front and centre and the 2014 DOE Report Conclusion says, “The other alternative is to shift away from using LED products as one-for-one replacements to upgrade existing luminaires.” The 29W Independence LED tube tested by the DOE is most often used to replace two fluorescent tubes or in multi-tube high bay fixtures, while the one-to-one replacement for 32W fluorescent tubes is the Independence LED 12W or 16W solution.

Return on Investment (ROI) drives retrofits. The cost of four imported LED tubes for a common 2-foot × 4-foot troffer-style fixture is often more expensive than a pair of American-made Independence LED tubes that in many cases provide the same fixture lighting output. With typical 4-foot T8 32W fluorescent tubes each pair adds up to 64W and the Independence LED 29W or 22W solution can yield energy savings between 54% and 65%, respectively.

2014年6月27日星期五

LED bulbs develop color customizing options

customizing LED Light bulb
By using smartphones and tablets, the switch-on times and colors of the Philips 'hue' LED light bulb can be remotely controlled. | KYODO

Light-emitting-diode bulbs are becoming a new tool for customizing home or office lighting environments.

In November last year, Naomi Watanabe, who teaches at an elementary school in the evenings, installed a Panasonic Corp. LED ceiling light system in her classroom at a private home in Yokohama.

“This has made the texts look sharper and easier for students to read and helped stop them from falling asleep during my class,” Watanabe said.

In “study” mode, the LEDs change color and brightness to produce an environment suitable for studying and for reading.

The bulbs can also re-create the color of the sky. For those who wish to wake up feeling good or wish to feel refreshed, the company recommends “clear” mode because it emulates the color of a clear sky. If you wish to feel relaxed with your family, the “relax” mode is recommended to emulate the colors of a sunset.

“LEDs allow you to change not only the color and brightness of the light, but also its direction,” Kyosuke Yamagata, a senior official at Panasonic, said. “This makes it possible to create an optimal lighting environment in various situations, such as for studying and at the theater, adding spice and color to your daily life.”

The Philips “hue” LED light bulbs developed by Royal Philips of the Netherlands, meanwhile, allows customers to produce more than 16 million different color gradations using an application for smartphones and tablets.

For instance, if you select a color from a photograph you have taken with your smartphone, the “hue” light bulb receives information about the color through a wireless connection and emulates it.

Customers can also choose a color from the ready-made modes, such as “relax” and “concentrate.”

Since the system can be remotely controlled, you can turn on the light even when you are away from home to give the impression that you are actually there as a measure against intruders.

With a global positioning system, the hue can also be set to automatically turn itself off when you leave home and turn itself on again just before you return.

Since Philips has disclosed its basic technology for the system, more than 100 different kinds of applications have been developed for customers mainly in Europe and the United States.

Among them is an app for people with hearing impairments that enables the hue to respond to sounds and switch on, and to inform owners that they have received a text message or that stock prices have fluctuated by changing colors.

Explaining that people in Europe tend to change light settings depending on the situation, Yu Sato, an official at the Japanese unit of Philips, said, “We believe that the hue, which combines these custom and advanced networking technologies, has great potential as a future lighting system.”

High CRI Cree T8 LED tube light


Cree, front-runners in the scramble to replace traditional forms of illumination with greener LED sources, has just announced the release of a new type of tube light designed to tackle one of the biggest energy hogs in the corporate world: fluorescent overhead lights.

The new Cree T8 LED tube bulb looks very much like the traditional T-8 fluorescent tube we’ve been using since the 1970s. Except, however, that the new Cree uses LED rather than inert gas which allows it to turn on instantly (regardless of how cold the weather is) without flickering as well as operate at a 30 per cent energy savings over the traditional method. The Cree T8 led tube lights outputs 2100 lumens at 21 watts with a CRI (colour rendering index) of 90. That’s very good, even the best current generation of fluorescent bulbs top out around 10 points lower.

What’s more, the Cree’s are rated to 50,000 hours of operation (just north of 17 years if run for 8 hours a day, 365 days a year) and are designed to fit into existing ballasts so, unlike other LED fluorescent replacements, you won’t have to get up into the ceiling and rewire anything, just plug the LED tube in the same way the older fluorescents do.

The new LEDs are a bit pricey upfront (as all LED systems currently are) at $US30 each. However, these bulbs are rated DLC compliant (the business version of the Energy Star program) which means that installing them could earn you a hefty rebate (anywhere from $5-$15 per lamp) off your company’s monthly utility bill in addition to the inherent energy savings.

2014年6月26日星期四

Thailand government to keep T5 and T8 LED tube prices low and affordable

Thailand has seen a drop in energy consumption of one percent over the past four months, said Zhang Shuncai, Department Head of Electricity Generating Authority of Thailand (EGAT). This drop in energy consumption correlates directly to the current economic situation. There is a chance for a further decrease to 2 percent by the end of the year if political instabilities continue.

EGAT plans to continue to promote the use of energy efficient LED luminaires to the general public and estimates that the government will control retail price tube lights at around THB $120-130 (US $3.7-$3.99) each.

Thailand’s economy dipped during the first quarter of this year and energy consumption followed suit, said Zhang. It is hoped that the government will stabilize over the remaining months of this year, and the economy rebounds. At the same time, the EGAT continues to actively promote energy efficient LED luminaires, as well as increase power efficiency and reach efficient energy conservation.

The use of T5 and T8 LED tube lights can increase energy efficiency by 50-70 percent. Through communication with the Department of Alternative Energy Development and Efficiency (DEDE), the Thailand Energy Conservation Fund will be used to encourage the general public to use LED tubes T8 and T5. The government will be controlling LED tube retail prices and keeping it at THB $120-130 per tube. There are currently around 820,000 LED tubes T5 and T8 lamps that already have received the national no. 5 standard certification. With government department promotion, it is estimated that LED tube lamps usage will increase, and save even more energy.

The EGAT no. 5 standard certification for electrical appliance energy efficiency has already been in effect for 20 years, and has saved a total of 30 megawatts of power, which is equivalent to saving THB $100 billion in new power station investments.

glass led tube T8


led tube T8


T5 LED tube

An architectural lighting designer's perspectives of LED lighting

In recent years, the LED light source has dramatically changed the lighting industry, adding numerous possibilities in lighting and it is expected both by the industry and the household users to completely replace the traditional light source as a brand new light solution in the near future.

As a rapidly growing sector, LED lighting has evolved from only RGB LED about six or seven years ago to white LED architectural lighting in recent years. Despite the ongoing emergence of new LED technologies and lighting products, we still have doubts about whether it is time to embrace the LED technology: Is LED lighting ready to be used as general lighting? Can these products which were developed recently meet the needs of end users (designers and consumers)? Have LED manufacturers taken the need of the end user (architect/designer/consumer) into account during the R&D or design process? Is there a gap between the claimed product performance by LED manufacturer and the actual needs of the designer? At this stage, the focus is always on what degree of technology can be achieved. However, shouldn’t “end user’ be central to the design concept?

After all, it is people who think and create. Science and technology are just a means to help realize people’s dreams. In this article, we will view LED development and the designer’s needs when applying LED light source from the perspective of architectural lighting design. Moreover, the win-win situation can only be achieved through ongoing communication and cooperation between manufacturers and designers, combining technology and practicality.

First, we will take a look at the current situation and some cases of LED utilization in architectural lighting. Although there are precedents of LED street lighting application, there were only a few cases, and the effect still remains to be assessed. Generally speaking, LED is not fully ready to be adopted as general lighting or as major light source. It is mostly applied in partial lighting and feature lighting, like wall washing, back-lighting, bridge lighting (Sackler Crossing/ Bridge of Aspiration), or in the case of strong dynamic effect needed for building facade (Talee Star Place, Kaohsiung)

Quality of light is the major concern for the lighting designer when deciding whether to use LED.

What is quality of light?

Consistency

Consistency refers to whether the color temperature of the light source is consistent, especially when two light sources are compared with each other. It usually involves the use of binned LED. In general, a lighting product will be more stable if double binning system is used by the manufacturer, which is critical for architectural lighting. It will become an obvious mistake in its design if two adjacent LED wall washers show visible differences in color temperature. Consistency also refers to stability over time, including whether luminous decay or color temperature will differ after a period of use.

Color rendering

Many alleged high CRI LED products have been put on shelves, but a designer should pay attention to whether high CRI really means excellent CRI. For example, in places such as museums or galleries where the lit objects require precise color rendering, we usually ask manufacturers for LED SPD (Spectral Power Distribution). The lit objects will be presented in unnatural colors if the wavelength is discontinuous, for which end users have expressed that many types of LEDs on the market make lit objects, especially faces or bodies, look ‘odd’.

Quality of light discussed above refers to the light source, while in application, it refers to whether LED light fixture can meet various functional needs, for example, spotlight, floodlight, downlight, uplight, wall washer, and light for high ceilings.

Efficiency

In terms of efficiency, high power LED has far surpassed that of conventional incandescent lamp and some have even exceeded the efficiency of fluorescent tube. However, the efficiency of LED street lighting still has cannot match that of the
metal halide lamp. Furthermore, LED light efficiency decay often occurs under high temperature and high drive current.

Control

Complex adjustments can be achieved in light control.

Cost

Cost of LED lighting is still too high but it is expected to reduce to an affordable level for the general public in the future.

Reliability & Maintenance

As discussed above, LED efficacy declines and its lifetime shortens due to high operation temperature and unstable current, which will reduce its reliability.

Therefore, we should ask whether the manufacturer will provide a warranty period and the maximum operation temperature for the fixtures at which the quoted lumen maintenance is achieved. If LED light shows difference in color temperature or burns
out during the warranty period, what is the strategy of the manufacturer?

Will they provide any maintenance services? To our knowledge, many manufacturers fail to meet expectations in this aspect. Moreover, most LED fixtures are permanent devices, especially in the architectural lighting, so reliability and maintenance is an important issue.

In this fast changing industry, lighting designers are often caught in this situation: an advanced LED solution is designed for a project set to be completed two years later. The potential danger lies in that the higher the expectation, the greater the disappointment.

In spite of the aforementioned concerns, we still hold high expectations and believe that within the next two to three years, LED light sources will replace the traditional light source in general lighting and even become the main light source, and become the major light source in commercial
spaces, such as hypermarket, halls of 4~5m in height, or airport lighting with 24-hour operation.

How do we achieve the goal?

At present, LED industry has started to develop a type of LED lamp where LED is built into the fixture shell, aiming to directly replace the conventional tungsten bulb and fluorescent tube. It seems to have increased convenience and reduced the cost of replacing fixtures, making it possible for consumers to buy LED lamps to directly replace the existing one. However, in fact, it is not a lamp because the actual lamp is hidden inside the lighting fixture. In my opinion, although the industry tries to work out the easiest replacement solution for consumers, the wrong direction is adopted.

As the design of the existing fixture is not based on the optical properties of an LED, optimal efficiency cannot be achieved by a direct replacement, neither can visual comfort or light effect originally designed for the lamp be achieved through this replacement.

We should develop a new system, a new size and a new lighting fixture based specifically on LED properties. The success of development hinges on the close operation and the frequent dialogue bet ween designers and manufacturers; this is necessary to develop a product of both aesthetic and practical value.

The next step for manufacturers is to normalize, standardize and mass produce products. Meanwhile, the product pgradability should also be considered. As mentioned earlier, LED industry is evolving rapidly, hence, it will be cost effective if the LED module is upgradable without having to replace the whole lighting fixture when the original LED lamp needs to be replaced in 5 to 10 years later.

U-TEL to Launch Dimmable GU10 MR16 LED Lamp at TILS 2014

Presenting in the 2014 Taiwan International Lighting Show, U-TEL TECHNOLOGY will display a full series of line-voltage Dimmable GU10 LED base LED MR16 with the following key features:

U-TEL Technology dimmable GU10 base LED MR-16. 

žBuilt-in dimming circuit compatible with most traditional TRAIC Leading Edge dimmer controller.  Adjust the ambient light for different needs.

žNo electrolytic capacitor for longer product life time.

žHigh wattage, high brightness in world’s smallest size LED MR16 GU10.  Fits into most of traditional MR16 GU10 fixtures and directly replaces traditional 50W halogen bulb.

žProvides 80lm/w efficacy. Power factor reaches up to 0.9. Saving up to 80% on power consumption.

žThree different bases (GU10/ E27/ B22) that fit into most MR16 fixture with GU10/E27/B22 lamp holder.

žUsing only CREE and NICHIA LED with color temperature range from 2400K~6500K.

žOptions on 5W, 6W, 7W, 8W, 10W output and beam angles of 25°, 35°, 45°, 60°, 110° to meet any demand.

The multiple combinations in color temperature, beam angle and dimming feature is capable to meet any requirements in both commercial and private needs, changing the ambient light and atmosphere.

There is already a wide demand for this product in Australia, Thailand, Singapore, France, Spain, Germany, UK and forth.

2014年6月25日星期三

LED Hospitality Lighting - Energy Smart MR16 and GU10 LED lamps for Mitchells & Butlers

The Mitchells & Butlers group is the leading operator of pubs and restaurants in the UK and has been at the forefront of the industry since 1898. The brands belonging to Mitchells & Butlers are located throughout the UK at more than 1600 individual sites in both city center and country locations - including All Bar One, Toby Carvery, O'Neill's and Harvester to name just a few. The group worked with GE to improve some of its branches’ lighting solution.

Mitchell and Buttlers: Kings Fairway
Photo Credit: GE Lighting

The expectation

Dedicated to providing a consistent customer experience, the Mitchells & Butlers estate was looking for an upgrade in its traditional Halogen lighting system without altering the look and feel that customers have come to expect from each of the brands. Due to the vast number of sites undergoing the refurbishment, Mitchells & Butlers also required an energy efficient solution that would generate significant financial savings.

"One of the most important things for us was to ensure that the LED solution would deliver a consistent level of light that would not alter or degrade over time," said Richard Felgate, Head of Energy Management for Mitchells & Butlers. He continued: "Aligned with this, we were also looking for a solution that would help us to reduce our energy costs and associated CO2 load."

Mitchell and Buttlers: Harvester
Photo Credit: GE Lighting

The solution

Though they are not very efficient, Halogen lamps are still widely used in hospitality installations as they provide beautiful quality of light that was until recently hard to achieve with new technologies. GE Lighting recommended replacing all of the existing 50W halogen lamps found in the front of house areas of the estate with its energy efficient 7W MR16 LED lamps and EnergySmart™ 5W GU10 LED lamps.

GE's Energy Smart™ LED  MR16 lamp

GE's Energy Smart™ LED GU10 dimmable


The 7W MR16 range offers a high level of technical performance in the form of a halogen shaped LED lamp. Simple to change as it can be used with the existing ballasts; it offers outstanding performance and 12 times longer life (compared to a standard 50W halogen lamp), ensuring an exceptionally short payback period.

The new generation of Energy Smart™ dimmable LED GU10 lamps provide market leading efficiency and lumen performance - a true replacement for GU10 halogens. The range offers 50W equivalent lamps between 320-360lm, all with a long life of 25,000 hours (L70/B10). The lamps are available in 3 different colour temperatures and 25 or 35 degree beam angles, to fit the application.

In total it was around 130,000 GU10 and MR16 lamps delivered for the 1600 estates across UK.

"On the whole, we chose to convert as many of the 50W halogen fittings across our estates to GE's 5W GU10 LED lamps as possible."- said Richard.

"Prior to the installation, we undertook a thorough trial and evaluation process to evaluate the quality of light emitted by the LED lamps. We found GE's MR16 and GU10 lamps to be the best and most suited to the project in hand, both in terms of the light quality offered and the relatively low cost, when compared to alternatives," he added.

Mitchells and Buttlers: The Albion
Photo Credit: GE Lighting

Results and benefits

GE's lighting solution of replacing the Halogen lamps with LED technology generated an impressive 91% saving in CO2 emission & energy use of the lighting systems, coupled with maintenance cost savings of 69% and operational cost savings of 88%. GE's LED lamps also offered long life & high lumen maintenance, providing a solution that does not compromise the look & feel of the pubs and restaurants.

"We're delighted with the LED solution that GE Lighting has provided and incredibly pleased with the impressive three month payback period delivered as a result," continued Richard.

"As we had carried out a thorough trial process prior to our ultimate selection, we were incredibly confident that the solution would be able to deliver as expected – and we were right. We're obviously very pleased to see such a short payback period, due to the scale of our estate. Such significant savings, both in terms of cost and energy, will help us hugely in our bid to reduce unnecessary waste."

Aside from the financial benefits, GE Lighting's products were also able to deliver a consistent look and feel across each individual brand – something that Mitchells & Butlers prides itself on. "Everyone knows what to expect from a Harvester or an All Bar One branch for example and this comes right down to the lighting, which contributes to the overall ambience. The solution from GE has allowed us to ensure that accent, display and overall lighting needs are addressed. Whilst this may seem like a relatively minor point in the grand scheme of things, we think it is incredibly important to ensure our customers know what to expect – a major benefit of using GE's MR16 LED and LED EnergySmart™ GU10 lamps is we can ensure complete consistency," Richard added.

From a maintenance perspective, the MR16 LED and EnergySmart™ LED GU10 lamps can be easily replaced when required – another major benefit when considering the number of Mitchells & Butlers' sites involved.

Mitchells and Buttlers: The Albion
Photo Credit: GE Lighting


Mitchell and Buttlers: Sizzling
Photo Credit: GE Lighting


Mitchell and Buttlers: Sizzling
Photo Credit: GE Lighting


Mitchell and Buttlers: Kings Fairway
Photo Credit: GE Lighting


Mitchell and Buttlers: Harvester
Photo Credit: GE Lighting


Mitchell and Buttlers: Emberke Black Horse
Photo Credit: GE Lighting

Future Lighting Solutions ALT partner on MR16 LED lamps with Lumileds chips

uture Lighting Solutions has partnered with Aeon Lighting Technology Inc. (ALT), a Taiwan based leading manufacturer of high-power LED lights, to create a range of MR16s that offers the best color in the LED industry. The resulting product has become highly in demand for places that require quality lighting such as five-star hotels, high-class restaurants, boutiques, museums and galleries.

Comfortable and pleasing lighting is a must for certain industries, especially if their merchandised products or venues depend on the color and effect for potential customers. Future Lighting Solutions has provided top quality LED chipsets manufactured by Lumileds for ALT to develop LED lights. With Lumileds chipset, ALT engineered an MR16 with 2600K color temperature and high CRI, which is generally preferred by many luxury venues that require warm lighting.

Five-star hotels that depend on lighting to create a certain atmosphere and ambiance also require such lighting solution. Through ALT’s top distributor in Singapore, Light Phase, five-star hotel Ritz Carlton has adopted these MR16 lights; five-star hotels Dusit Thani and Plaza Athénée Bangkok, a Royal Méridien have done the same through ALT’s top distributor SCG in Thailand. Luxury hotels promise their customers an experience of heaven on earth with traces of exotic influence, which can be achieved and enhanced by professional lighting design. Plaza Athénée Bangkok, a Royal Méridien has a 1,185m2 lobby, which requires brightness that is sufficiently met by this version of MR16. In the future, more luxurious hotels will start to adopt this type of clever lighting solution.

Future Lighting Solutions and ALT have partnered up to devise an MR16 that offers a warm white color that closely resembles halogen lighting, a color much preferred in the service industry. Together, Future Lighting Solutions and ALT offer a brilliantly beautiful MR16 to satisfy the discerning needs of quality venues.

Brilliant AG to showcase LED lamps, luminaires, and lighting controls at Light+Building

Gnarrenburg/Germany. Brilliant PROFESSIONAL will launch at Light + Building 2014 in Frankfurt am Main, the industry’s leading international trade fair. From 30 March to 4 April 2014, architects, planners, light and product designers as well as potential trade partners have the opportunity to convince themselves of the new product line’s attractiveness in hall 6.0 at Brilliant AG’s booth A24.

With Brilliant PROFESSIONAL, Brilliant AG -- one of Europe’s leading brand distributors of lamps as well as indoor and outdoor luminaires -- introduces a first-class range of innovative LED products and smart building control solutions. As the name suggests, all products are primarily designed for professional use. This extension of Brilliant AG’s product portfolio marks a new strategic orientation. By addressing new target groups, Brilliant AG now allows an even broader customer base the benefit of its outstanding experience and excellence in light and technology.

The three product categories of Brilliant PROFESSIONAL:

1. Top-quality LED solutions such as

- ultra-flat LED panels with extremely smooth light spread, multiple use, and mounting options.
- appealing LED downlights for indoor, outdoor, and wet room use.
- expandable LED cove lights, pluggable up to a total length of 20 metres at will, e.g., for tailored room or furniture illuminations. Also available:
extendable high voltage LED stripes.
- highly efficient LED tubes as a robust and break-proof alternative to conventional luminescent tubes for offices, hallways, car parks, wet rooms, and refrigerated counters etc.

2. LED design highlights

include a new stylish LED office luminaire combining minimalistic design with maximum performance. Due to its swivelling ultra-flat LED foil panel, it can either be used as a powerful direct light source for reading and working or as an uplight that creates a subtle light ambience. Another highlight of this category will be a new flexible LED foil, designed to match the special requirements of the OEM and project business.

3. Smart building control

offers perfect control of relevant functions such as illumination and safety features at buildings -- with utmost convenience -- online via computer or smartphone.

Although each product has its very own character, all Brilliant PROFESSIONAL products have one thing in common: the perfect combination of functionality, design, innovation, quality, and value for money.

UAE to Phase Out Inefficient Lamps Starting July

United Arab Emirates (UAE) moves to ban the sale of inefficient lamps starting July 1 in an effort to reduce energy bills and carbon emission. 
The phase out of inefficient luminaires will save the country roughly GBP 106.8 million (US $181.1) on energy bills and reduce carbon emissions by 940,000 tons per year. 
Once put into effect, all luminaires must meet the new indoor lighting standard based on environment, safety, and efficiency criteria. Incandescent luminaires will be replaced by CFLs, LEDs, or halogens. 
Since the UAE does not have lighting manufacturers, the ban will specifically target imports. In addition, the ban will not affect existing inefficient luminaires, which make up 78 percent of lighting products. 

Chinese Media Reveal Apple iPhone 6 Release Date

Apple’s Chinese suppliers have leaked that the new iPhone 6 will begin mass production next month, reported Bloomberg. Increasing competition from other smartphone makers may have pressured the company into early production. 
It is reported that Apple will produce two devices with displays larger than the current iPhone 5s, with 4.7-inch and 5.5-inch versions to be released as new iPhone models. The new iPhone 6 is estimated to hit retail shelves on Sept. 19, 2014 according to Chinese media sources. 
Competitors Samsung and HTC have put pressure on Apple after releasing smartphones with displays larger than 5.7-inches. 

2014年6月24日星期二

Philips Lumileds Expands Solutions Market to Meet Changing LED Industry Needs

Philips Lumileds continues to develop new products to satisfy the ever changing needs of the LED industry. LEDinside had the opportunity to speak with Philips Lumileds Sr. VP of Sales & Marketing Emmanuel Dieppedalle, Sr. Director of Marketing and Business Development Ray Chock, and VP of APAC Sales Alvin Tse during the Guangzhou International Lighting Exhibition 2014 last week to discuss the company current situation and future outlook.

Emmanuel Dieppedalle, Sr. VP of Sales & Marketing at Philips Lumileds standing in front of the Philips Lumileds booth at GILE 2014.

Q. How did Philips Lumileds’ revenue perform last year?

Dieppedalle: We are seeing growth in LEDs. In terms of revenue, illumination grew the most last year. Our company went through a change in management two years ago when we changed CEOs.  Afterwards, the company started to move into the mid-power, CoB, and other new application fields. This helped us gain greater market share in illumination.

Q. What is the breakdown of application fields for Philips Lumileds?

Dieppedalle: We are very strong in the outdoor lighting segment because it requires high-powered solutions, which has always been our expertise. We have invested a lot in IP such as epitaxy, which is very important for the efficacy in LEDs.  We also invest a lot in phosphor which we develop in-house. Our LUXEON TX product is doing very well in the market in terms of efficacy, as well as LUXEON M. They are great for outdoor applications.  We are also very active in the consumer lighting sector, such as light bulbs, which is mainly mid-power. In March this year, we released 10 new mid-power products.  We are already adding more capacity to address all the demands because the mid-power market is just starting to explode.  Low-power is another area we are active in. We are building a lot of capacity for low-power because there is currently a lot of demand in this area.  In summary, we are investing a lot in IP around our epitaxy, phosphor, and device architecture. These three areas are very important in order to bring the best LEDs to the market. On top of that, we are also expanding our portfolio. We are asking our customers what kind of solutions they need and we are bringing them these solutions because we want to become a supplier who is able to address all the solution needs.

Philips Lumileds booth at GILE 2014 swarmed with visitors interested in the company's wide array of CoB products.

CoB Everywhere

Q. I have noticed a lot of CoB LED products at the exhibition this year. What are Philips Lumileds’ plans in this area?

Dieppedalle: We have released many CoB products into the market. We have available products with 1000 lumens up to 7000 lumens already released in the market. We are going to continue to release more solutions in the second half of this year. We are working to have an even more complete portfolio. We are also bringing special solutions to the market, such as LUXEON CoB with CrispWhite Technology, for target certain segments. We also have partnerships with manufacturers for clamps, lenses, heat sinks and more to provide full solutions for customers.

Chock: When we look at the CoB market, we knew there were certain gaps in terms of what manufacturers offered and what customers need. We implemented three things into our product line to make it stand out. One is that it is the highest efficacy CoB on the market. We have just had a lumen upgrade to 130 lm/w. The second is that it has the smallest light emitting source (LES). It is the diameter of the fried egg. The smaller the “fried egg,” the smaller the beam angles you can support. The third is very low thermal resistance that enables more flexibility in the system design that can be used for higher efficacies, smaller heatsinks or higher flux.

Tse: It is much easier for your ecosystem using reflector-based  designs. In optic design, a smaller light emitting surface is much easier to control.

Q. I have spoken to lighting manufacturers who said that they do not like to work with CoB because of the customized specs for CoB products. They would prefer to use standard products. Does Philips Lumileds have a solution to this problem?

Dieppedalle: That is why it is difficult when a consumer asks what type of product we recommend for application in a downlight for example. It depends on the customer’s design objective, if they want to achieve low costs, high lumens per watt, high quality of light and CRI, etc. It also depends on the customer’s history, what they want to achieve, market approach, and design architecture. So that is why there is not one single answer to this question.

Q. Are CoBs able to be applied in all lighting products?

Tse: CoBs are  excellent options for downlights and spotlights where a single light source provides crisp beams and uniform lighting.  Other options are area lighting, such as low bay and high bay applications.  

Q. Some manufacturers have started using CoB in street lights.  

Dieppedalle: The main goal for street lights is to put light on the street uniformly. That is why high-powered packaging today is still the best solution and has a 99 percent market share in street lights. There are manufacturers who are testing mid-power LEDs and CoBs for street lights now. However, the market is still mainly high-powered.

Chock: Beyond street lights, the next wave of application we see is in stadium lighting for sports and arenas where HP will be used exclusively.

Tse: The next wave in Europe and the Americas will be in stadium lighting, but horse track lighting for Asia.



LED is still growing

Q. Is LED technology able to replace all kinds of light sources on the market right now?

Dieppedalle: Yes, that is correct. We predict that the market will start to grow a lot. It is estimated that revenue for the LED market in the future will be around 15-20 percent. It is unsure if this will happen, but all the technology is already available at a reasonable price point so we are optimistic.

Q. What growth percentage are you expecting?

Dieppedalle: It depends on the segment. For illumination there will be a definite 20 percent increase. We of course are active in more areas that just illumination.

Q. What about the lighting segment?

Dieppedalle: If you look at China, the outdoor lighting segment is growing. Other segments such as retrofit and consumer lighting is also large in China. This is why we introduced many of our new products including single die, high voltage, high CRI, and lower power into the China market. Since we have a lot of IP, we can develop many different solutions. We can combine different phosphor and die architectures to develop new solutions. We are very active in the consumer market in China with bulb manufacturers. Another market in Asia which is large is in hospitality and retail lighting. This area requires downlights, spot lights, etc. We are seeing tremendous growth in this area.



Capacity expansion

Q. What about capacity?

Dieppedalle: We are doing a lot of capacity expansion because the market is growing a lot. There is strong demand in the market and it is growing tight.

Q. Do you have any plans to expand your in-house capacity in China?

Dieppedalle: No. Our plans are to continue expansion in our plant in Malaysia, which is where all of our backend is located.

Q. So you still have a plans to expand capacity this year?

Dieppedalle: Yes, we are still expanding capacity in all of our plants. We have bought a lot of equipment over the past couple of years. So we have that available.

Q. Do you have any plans for OEM or outsourcing?

Dieppedalle: Yes, we are current working on this. This way it is not one strategy and one country, but will have capacity everywhere.



Asian market

Q. How do the market conditions vary within Asia?

Dieppedalle: Market conditions are completely different. In China, the market is focused on consumer, street light, and outdoor. In Japan, there are a lot of downlights, indoor, and hospitality.

Chock: In Japan, after the tsunami and earthquake that hit the country a few years back, power consumption was displayed in the subway stations and other public areas to inform the public how much energy was being used. Once it reached 80 percent capacity, they would start rotating brown outs throughout the city. This was a huge motivator for consumers to purchase LED lighting, so the adoption rate in Japan is very high.

Dieppedalle: Indoor lighting penetration rate in Japan is around 50 percent. The market will soon move towards outdoor lighting.

Q. Is the Japanese and Chinese market the largest in Asia right now?

Dieppedalle: Yes. Korea is still growing, but is still small. There is some development in indoor, but it is not a big market yet.

Tse: The market in South East Asia is stable but they are mainly focusing on indoor and not outdoor lighting. India is growing in indoor mainly, but it is still small in terms of market.

Q. What do you think about the supply chain in India?

Dieppedalle: For the India market, we mainly rely on distribution networks to resell our products in India. We mainly go through local distributors who know the market, trends, and consumer needs.

Q. Green colored LEDs are pretty rare. In your LUXEON Rebel line, what made the company decide to design lime?

Dieppedalle: We have developed a lot of IP with customers depending on certain needs. They come to us and ask to help them develop a specific product. This is how the LUXEON Rebel Lime got started. Philips came to us as a customer and said that they would like to develop a high-efficacy, color-tunable product. If we did not have this product available, the Hue bulb would not have been possible. This is how we were able to create a high efficacy product with 16 million colors by color mixing. The first product which was developed over a year and a half ago used two blue, four red, and five lime LEDs. We are now working on reducing the number of LEDs and improving the product.

Chock: As a comparison, direct green is 80 lm/w. We have more than doubled the efficacy by using phosphor converted (PC) lime with up to 200 lm/W.

Chicago to Install Big Brother Like Sensors to Measure Environmental Factors

People in Chicago will soon see metal fixtures wrapped around light poles in several areas throughout the city this summer. They are not decoration however, but data-collection sensors.

Proposed design for a sensor in the Array of Things project. (Photo courtesy of UCCD)

These sensors will be used to measure air quality, light intensity, sound volume, heat, precipitation, wind, and even population density, according to the Chicago Tribune. The information will be made public for use by researchers and application developers.

Headed by Chicago’s Urban Center for Computation and Data (UCCD), the Array of Things project will include 50 sensor boxes installed throughout the city. Residents will be able to receive real time information about the city and specific areas, including pollution levels. This is the first major U.S. city to initiate such a project.

Example of a possible use for air quality data.(Photo coutesy of UCCD)

Citizens do not need to worry about Big Brother like intrusion on their privacy. Privacy protection is one of the top priorities of the project, says Charlie Catlett, Director of UCCD and senior computer scientist at Argonne National Labs and the University of Chicago. The sensors will not have cameras and microphone installed in them.

The sensors are just the beginning, believes UCCD. As sensors installed in cities similar to the Array of Things spread, designers will begin to use the information collected to change the way that cities are built.

“I can anticipate that data about urban interactions will be considered another form of input, another form of material that really has to be understood and shaped and applied to the design process,” said Doug Pancoast, Associate Professor at the School of the Art Institute Chicago and UCCD member. “We have to know a lot about steel and glass, and we have to know a lot about data and human interaction to make the environment and objects we think will be useful.”

2014年6月23日星期一

LED lighting project:The Leonard P. Zakim Bunker Hill Bridge in Boston, Massachusetts, USA

The Leonard P. Zakim Bunker Hill Bridge in Boston, Massachusetts, USA is one of the widest cable-stayed bridges in the world. Named for both the local civil rights activist Leonard P. Zakim and the American colonists who fought at the Battle of Bunker Hill, the ten-lane bridge spans the Charles River and carries over 200,000 cars each day to and from major interstates on the north side of the city. At night, lit with bright blue light, the Zakim Bridge is an instantly recognizable feature of the city skyline. In an interview with The Boston Globe, bridge architect Miguel Rosales said: “the bridge is supposed to have the feel of a regal entry to Boston, the towers bathed in blue, the cables highlighted in gleaming white."

Photo Credit: Robert Sansone

Necessary to be Changed

By 2012, the metal halide lights on the bridge, in operation since the bridge first opened in 2002, had started to deteriorate and had become noticeably dim. Concerned citizens saw that this emblem of their forward-looking city had faded, and they began to express their concerns to the Massachusetts Department of Transportation (MassDOT). Citizens initiated various grassroots efforts to relight the bridge and bring it back to its original majestic state.

Philips Color Kinetics also noticed the dim lights and wanted to get involved in helping to revitalize the landmark. The company wanted to do something meaningful that would have a positive impact on the Boston community, where Color Kinetics was founded and where it has put down its roots.

Photo Credit: Robert Sansone

Solutions and Products

Philips Color Kinetics, worked with MassDOT to relight the bridge towers with a state-of-the-art LED lighting system, and helped them understand how the lighting industry's most advanced and innovative technology could reduce energy and maintenance costs. They also explained how MassDOT could also use digital LED lighting control to change the colors of the lights with the touch of a button for holidays and special occasions, and in the future to potentially indicate traffic conditions.

In turn MassDOT shared the challenges they face to keep roadways, bridges, and tunnels safe and operating day and night. Relighting the Zakim Bridge seemed especially problematic: it would be costly to rewire for a new lighting system, and would possibly require excavation, lane closures, and disruption to traffic.

Photo Credit: Robert Sansone

Philips Color Kinetics introduced MassDOT to IntelliPower, a solution that leverages existing electrical and physical infrastructures to enable the affordable installation of dynamic, digitally controllable LED lighting systems. By using IntelliPower, MassDOT was able to use the existing wiring and fixture mounting points on the Zakim Bridge, which dramatically reduced the cost of relighting the bridge. MassDOT replaced the old metal halide fixtures with Philips Color Kinetics ColorReach Powercore LED floodlights.

The new LED lighting system, which is estimated to reduce energy consumption by more than 80%, was unveiled in December 2012. Now the city's signature image shines brightly once again.

"Since construction, this bridge has served as a symbol for the Commonwealth," said Richard A. Davey, MassDOT Secretary & CEO. "With this relighting made possible by Philips LED technology, we renew our belief that a bridge can be more than a symbol. It can help build community. This new color technology will allow us to promote, engage, and inform our community in a sustainable way."

Special thanks to the friends of The Lenny Zakim Fund including Joyce Zakim, Harold Schwartz, and Mike Sheehan.

Photo Credit: Robert Sansone

Epistar Acquires Optodisc Factory to Expand AlInGaP LED Production

Leading Taiwanese LED chip manufacturer Epistar acquired bankrupt Taiwanese blue-ray CD and LaserDisc manufacturer Optodisc factory for NT $836 million, according to a Chinese-language Commercial Times report. Epistar plans to expand AlInGaP and InGaN LED production at the new factory site.

The company's newly acquired factory is expected to be initiated in August 2014, and will increase its AlInGaP LED production capacity by 10 percent in third quarter this year. The new factory is a five to ten minute drive from Epistar’s number three factory. The company will be organizing the new factory at the end of this year, moving personnel and offices from factory two and three to the new site. Freed up space in factory three will be used to install equipment for AlInGaP LED production capacity expansions.

According to the Taiwanese manufacturer, outside of China, the major three AlInGaP LED manufacturers are Epistar, Osram, and Philips. The other two companies have no plans to expand AlInGaP LED production capacity at the moment. In the AlInGaP LED sector, Epistar has a lion share of 45 percent to 50 percent market share. The Taiwanese manufacturer is expanding production capacity because of rising demands for outdoor LED displays. Other applications requiring LED components include automotive lighting components for headlamps, signal lights, brake lights, and even long distance infrared (IR) vision equipment. All these market demands have led to AlInGaP LED shortages this year.

The stably growing AlInGaP LED market requires patented technology, high quality and reliability standards. Although, AlInGaP LEDs only make up 25 percent to 30 percent of Epistar’s revenue, these products contribute to more than half of the company’s profits. AlInGaP LED revenues have surpassed InGaN LED chips, another major revenue source for Epistar. The expanded AlInGaP LED production capacity is expected to further boost the company’s profitability.

The company’s ultra-bright AlInGaP LED products have reached a monthly production capacity of 1.4 billion pieces, while high brightness products production capacity are now about 4 billion to 5 billion pieces. Epistar factories have reached full utilization for both products, and the company plans to expand production capacity by 10 percent. Production capacity is expected to be increased in third quarter of 2014.

Moreover, Epistar will also be expanding InGaN LED production capacity at the newly acquired factory. Overt blue LED expansions during 2010 to 2011 caused an oversupply situation, but reduced production capacity over the last two to three years plus growing LED lighting demands have led to tightened supplies, said Epistar.

Epistar’s factories in Taiwan and China have reached full utilization rates, including subsidiary Huga Optotech. The company plans to steadily scale up production by adding 12 MOCVDs in Taiwan factories, and 30 to 35 MOCVDs in China.

Optodisc Factory declared insolvency on October 2013, and was going to sell the factory for at least NT $1.31 billion in March this year. Real estate agents noted the auction base price was too high at the time.

A Better Light Bulb: Pyramid Scheme for Brighter OLEDs

The most common kind of light bulb in the United States—the incandescent—is only about 5 percent efficient. The phosphorescent organic light-emitting diode, on the other hand, makes light out of 100 percent of the electricity that goes into it.

They're good for smartphone screens and mood lighting, but they drop off in both efficiency and lifetime when they have to shine brightly.

University of Michigan researchers have found an elegant way to get around this problem—by arranging the PHOLEDs into a pyramid.



"Achieving extra brightness from the conventional, flat design is inefficient and shortens the device lifetime," said Jaesang Lee, a doctoral student in electrical engineering and computer science and first author of the study. "However if we integrate our PHOLEDs into a pyramidal shape, we are able to achieve the equivalent, concentrated brightness at a much lower electrical current."

Because of their high efficiencies, PHOLEDs already claim much of the smartphone display market, and they are edging into televisions and ambient lighting. But when it comes to illuminating tasks like reading and detailed work, they face a disadvantage: their efficiencies and life expectancies drop off sharply when they have to shine very brightly. This happens because the easiest way to make an LED brighter is to drive it with a higher current, and this is hard on organic LEDs.

The new device demonstrates a slick solution to the problem. Because PHOLEDs are naturally reflective, they serve a dual purpose when arranged on the inner surfaces of a pyramid-like structure. The PHOLEDs emit and concentrate the light that emerged from the opening at the base of the pyramid.

Although the surface area emitting light was more than four times larger than the opening at the base of the pyramid, this setup consumed about three times less electricity than trying to run a square PHOLED the size of the base at equal brightness.

The concentrator also achieves a better light distribution than a simple panel, evenly lighting flat surfaces rather than producing a bright spot in the center that dims toward the edge of the lighted area.

"My hope is that OLEDs will deeply penetrate all aspects of the lighting market because they're very efficient, very attractive and as people accept them, it will take a load off the electricity grid," said Stephen Forrest, the William Gould Dow Collegiate Professor in Electrical Engineering and leader of the study.

He says that about 30 percent of U.S. electrical usage goes to lighting, with 80 percent of that energy consumed by incandescent bulbs.

Lee's pyramidal structure resulted in illumination three times brighter than a flat configuration at the same current could have offered. Forrest thinks that smoothing out the edges and points of the pyramid into a shape more akin to a champagne flute could lead to even higher light concentrations, seven or even 10 times the brightness of a flat fixture.

An additional challenge for PHOLEDs is that some of the light gets converted to heat before it can get out of the device. As a result, laboratory PHOLEDs are about four times more efficient than incandescents but they could be 10 times more efficient. Forrest's team is also working on improving light output.

The paper, titled "Electrophosphorescent organic light emitting concentrator," will be published in Light: Science and Applications.