LED University


“A straightforward guide to understanding, buying, installing and benefiting from energy saving LED home lighting. ht: kulekat

Domestic LED lighting is still seen as something of a novelty and many people don’t really understand what’s involved, where to use energy saving LED lighting, how to use domestic LED lights or what the issues are regarding installing low energy light bulbs.

For a start there is the cost, which puts many people off straight away because what they almost certainly don’t yet understand about low energy lighting is that when comparing an ultra low energy LED light bulb with a normal incandescent bulb or even an “energy saving” CFL light bulb they are not comparing like with like.

It’s hard to see how a domestic LED replacement light that costs many times more than the ordinary light bulbs you’ve always bought before could possibly save you money. But believe it – it will save a fortune and sooner than you might think.

Part of the reason is not only the energy saving that home LED lighting brings, but that word “replacement” – replacing conventional, halogen and so-called low-energy CFL bulbs with genuinely ultra low energy domestic LED lamps means quite simply you don’t have to replace light bulbs all the time because the lifespan of most LED lamps on sale today is a staggering 50,000 (or more) times that of a regular incandescent light bulb.

The fact is that even at today’s fuel prices you will save (yes, that is “will save” not “may save”) substantial sums of money by replacing existing domestic lighting systems with low energy LED home lighting alternatives. The following table gives a clue as to how much saving is possible from LED compared to CFL and incandescent lighting.

Type Wattage Total Lumens Lifespan Hours Annual Energy Cost Cost Over 5 Years
Incandescent 60W 840 1,000 8.00 1200.00
CFL 11W 770 8,000 1.45 217.50
LED 5W 625 50,000 0.40 60.00

Energy costs are based on the standard approximation of 10p per kWh, with average usage of 4 hours per day for a modest family home with 30 light bulbs.

Regardless of how closely the actual costs match your own circumstances, you can clearly see that LED light bulbs are nearly 4 times cheaper to run than CFLs and a massive 20 times cheaper than incandescent light bulbs.

That’s without factoring in the increased lifespan which means that even when comparing purchase prices, any LED that is less than 50 times more expensive than its incandescent counterpart actually works out cheaper in terms of purchase costs too.

As the future brings ever rising energy and thus electricity prices, due to the remorseless effects of supply and demand, the arguments for switching to energy saving domestic LED lighting become ever more compelling.

Not only are domestic LED lights becoming rapidly ever more powerful and versatile, they are also dropping massively in price. That’s for a simple reason, namely that domestic LED is the future of lighting. The major corporations in the lighting industry are all betting their businesses on LED home lighting and moving away from both regular incandescent and CFL “low energy” or “energy saving” light bulbs.

The reason is very simple: economics and survival in a new age of global warming and energy crises – the lighting industry is being forced to adopt effective energy saving lighting solutions, which means that you, me and everyone else is also about to be forced to adopt energy saving lighting – namely domestic LED lighting.

Not only that, but many governments are also actively engaged in phasing out conventional light bulbs, some as soon as only a couple of years hence. The energy (and hence real money) costs of both manufacturing and, quite literally, burning traditional light bulbs is becoming prohibitive to all concerned.

This is even before you factor in the environmental cost in terms of waste heat, CO2 output and disposal. The lifespan of incandescent bulbs is less than 2% that of LED lamps and in the case of CFLs (Compact Fluorescent Lamps), which still last only about 10% as long, there is the added problem that they contain highly toxic mercury vapour and must be disposed of in a controlled manner. Between legislative push and technological pull, the conclusion is inescapable: domestic LED lighting is coming to a home near you, real soon.

How And Where To Use Energy Saving Domestic LED Lighting

Then there is the question of where and how to use LED lighting in and around the home. Again, lack of familiarity with LED technology means that many people have only encountered domestic LED lighting in limited areas such as novelty lamps, high powered LED torches and solar powered LED garden lighting.

The availability of domestic LED lighting solutions is increasing at a phenomenal rate, but right now it is still fair to say that the best way to use LEDs in your own household is in the applications where LED lights excel.

Unlike a conventional incandescent lamp that scatters (mostly heat and some) light in all directions, an LED emits a very bright, pure light that is highly directional. This makes them absolutely ideal as replacement spot lights, particularly for replacing halogen lightswhich seem to be everywhere in the home these days, wasting heat and money in equal measure.

LED lamps also remain cool to the touch, since they convert nearly all their input electricity into light and don’t waste heat, and are therefore far safer than extremely hot halogen bulbs that can present a serious fire risk in some situations.

Although spot lights are commonly used as down lighters in a domestic setting, they are also perfect as display lighting, but can be difficult to install in some areas due to the very high temperatures associated with conventional incandescent spot lights.

Again, LED spot lights are ideal for illuminating display shelving, installing underneath shelves and kitchen units, and lighting the insides of cabinets and even wardrobes. They can be placed right next to delicate surfaces and other objects without the slightest risk of harm due to heat. This also open up new display lighting techniques since LED spot lights can be placed adjacent to even in among the feature on display.

Another area where you might consider using LED lights is mood lighting. This is an area that home LED lighting really opens up since many of the effects achievable with LED lighting are simply not possible using existing lighting technology. LED lights can emit and mix all manner of rich, vibrant colors and even change color dynamically. These can be directed against wall, floors and ceilings to alter the ambience of a room or can be concentrated as a focal point to draw attention.

In fact, some modern TV’s already incorporate LED mood lighting by back projecting colors according to the mood of the programme being shown, but you don’t need to spend out on an expensive new HDTV to get this effect. You can install LED mood lighting anywhere you like. Imagine being able to subtly alter the color scheme in your bedroom for example according to how you happen to be feeling at the time!

And of course, all these techniques can be readily exported to provide outdoor lighting where low-heat, low-energy LED lights make them safe and easy to install in the garden to provide courtesy lighting, illuminate particular features, or whatever takes your fancy really.

How To Begin Installing Low Energy LED Home Lighting

Installing LED replacement lamps throughout your home should be seen as an investment as well as an opportunity to introduce new, innovative and cost-efficient lighting ideas into your home. The upfront costs can be quite significant (even though the savings are equally as impressive and surprisingly quick to kick in) so it is sensible to tackle the conversion in several phases.

When you review which light bulbs to replace with low energy lighting, initially consider lights that you leave on a lot and/or don’t need to be very bright (night lights spring to mind). Old first generation LED lights are easily up to the job here, providing suitable light levels and able to be left running more or less permanently at almost no cost. They are also quite cheap since by modern domestic LED standards they are old technology.

Other obvious domestic applications to consider for initial replacement are those halogen spot lights, since most people have them installed in light clusters (say 10 or more down lighters in a kitchen or 4 or 5 spot lights on a rack in a bathroom). Kitchen lighting tends to be left on a lot and you will obviously get the best savings from those lights you normally use the most. The great thing about installing LED kitchen lighting using retrofit replacements for halogen lamps (MR16, GU10 and ES formats are all available) is that you get low power consumption and low heat output, so no more issues with being fire-rated. There are now hi power GU10 LED energy saving bulbs equal in power to GU10 50w halogen output but running at 9 watts that deliver the holy grail of full spectrum light, low power and long life.

If you already have display lighting, this again is a great area to tackle for all those reasons mentioned above. If you don’t as yet use display lighting then you should consider the opportunities that LED strip lights and spots provide. If you have any open or glazed display cabinets, shelves, recesses or features/ornaments then you can easily turn these effectively into light sources that add interest to a space by bouncing LED lights off reflective surfaces or using LED color wash effects.

Feature lighting – that is, a light source that is itself intended to be the focus of attention – can also be wonderfully enhanced with domestic LED lighting technology. Colored or color changing LEDs are an obvious example with the beautiful rich depth of colors available. But also, certain materials such as polished metal and cut glass are a match made in heaven for the bright, sparkling light that is unique to tiny, low heat, low energy domestic LED lighting clusters.

The next targets to pick on are any other areas around the house that use or would benefit from very bright directional light. Desk lamps and other reading lights are clear candidates since that is the whole point of a reading light – clean, bright light aimed where you actually want it.

Also worthy of consideration are any domestic light fittings that “throw” light – up lighters for example – where you could achieve a similar effect by bouncing light from an LED light source so that it is diffused over a wall or ceiling.

Last to consider are fittings that use the common or garden lampshade. These are actually designed to scatter light in all directions and although this effect can be achieved by replacement LED light bulbs, current technology does not yet provide as effective a substitute as for those applications that require bright directional light. This is set to change in the very near future though, so watch this space!

But in the mean time, you could consider halogen based replacements for ordinary light bulbs as an effective interim solution since these have very similar characteristics to GLS (General Lighting Service) light bulbs in terms of range of fittings and light quality and intensity, but bring the added benefits of lasting at least twice as long while using about one third less energy.

What To Look For When Buying Energy Saving LED Lights For The Home

So, which domestic low energy light bulbs should you buy? There are a number of points to review, the first being aesthetics. It’s all very well saving money with LED home lighting but the operative word here is “home”.

It’s your home and you have to live there, so make sure you like what you buy. Not least, because unlike an ordinary light bulb which is a) cheap and b) won’t last long, a domestic energy saving LED lamp is an investment that you will own for at least a decade or three.

Until you become more familiar with the bewildering variety of domestic LED lights available, the best way to find out what you like is to actually see some in action. Specialist lighting and home furnishings stores frequently have home LED lighting on display as do many larger DIY and department stores.

Don’t be confused either by the low wattage rating for energy saving domestic LED lamps. A 7w incandescent bulb would give scarcely any light at all, but a 7w LED bulb is extremely bright. You should become accustomed to these different rating values so you know what level brightness you want (but of course, if you actually visit a store you can see for yourself anyway). As a rough guide a ratio of 1:10 works well – in other words a 5w LED would be a good match for a 50w incandescent bulb.

The next thing you will be confronted by after power rating is “color”. This is a value such 4700K (where K indicates Kelvins – a temperature scale where 0 degrees is “absolute zero”).

All you need to know about color temperatures is that the lower the value, 2100K for example, the warmer and more yellow the light and conversely the higher the value, such as 5100K the colder and bluer the light will appear.

There is no hard and fast rule as to what color temperature is “best”. It depends on personal taste and what you require the light for – bright, closer to daylight color or a softer more gentle ambience. This color scale example gives an idea.

You get what you pay for. Be wary of buying energy saving LED lightbulbs direct from websites that are not clear about the origins of their products. There are many cheap and frankly nasty products out there (eBay sellers advertising stock shipped from China for example). The simple and safe advice when looking to buy LED lightbulbs direct is stick with top quality brands.

Unless you are simply purchasing more of a type of domestic LED light you have previously bought and were pleased with, always try to see an example of how it performs for your intended application. You don’t have to jump in with both feet – start by replacing just a few lights with LED substitutes and gradually learn how and where to use home LED lighting to best effect in a domestic setting. Very much the same techniques and guidelines apply as for designing regular home lighting, and as ever, the best way of understanding any new technology is by playing with it.

For a more in depth look at buying and installing energy saving LED home lighting check out this simple guide to buying LED home lighting and also this review of how to set about replacing halogen with LED.

An energy saving domestic LED lamp is not like an ordinary light bulb – you are not going to be replacing it after a year. LED Home Lighting – it really is the future, in more ways than you might have imagined.”

http://www.kulekat.com/led-home-lighting/home.html

By James Wentworth – One-hundred-and-thirty years ago, Thomas Edison completed the first successful sustained test of the incandescent light bulb. With some incremental improvements along the way, Edison’s basic technology has lit the world ever since. This is about to change. We are on the cusp of a semiconductor-based lighting revolution that will ultimately replace Edison’s bulbs with a far more energy-efficient lighting solution. Solid state LED lighting will eventually replace almost all of the hundreds of billions of incandescent and fluorescent lights in use around the world today. In fact, as a step along this path, President Obama last June unveiled new, stricter lighting standards that will support the phasing out of incandescent bulbs (which already are banned in parts of Europe).

To understand just how revolutionary LED light bulbs are as well as why they are still expensive, it is instructive to look at how they are manufactured and to compare this to the manufacture of incandescent light bulbs. This article explores how incandescent light bulbs are made and then contrasts that process with a description of the typical manufacturing process for LED light bulbs.

So, let’s begin by taking a look at how traditional incandescent light bulbs are manufactured. You will find that this is a classic example of an automated industrial process refined in over a century of experience.

While individual incandescent light bulb types differ in size and wattage, all of them have the three basic parts: the filament, the bulb, and the base. The filament is made of tungsten. While very fragile, tungsten filaments can withstand temperatures of 4,500 degrees Fahrenheit and above. The connecting or lead-in wires are typically made of nickel-iron wire. This wire is dipped into a borax solution to make the wire more adherent to glass. The bulb itself is made of glass and contains a mixture of gases, usually argon and nitrogen, which increase the life of the filament. Air is pumped out of the bulb and replaced with the gases. A standardized base holds the entire assembly in place. The base is known as the “Edison screw base.” Aluminum is used on the outside and glass used to insulate the inside of the base.

Originally produced by hand, light bulb manufacturing is now almost entirely automated. First, the filament is manufactured using a process known as drawing, in which tungsten is mixed with a binder material and pulled through a die (a shaped orifice) into a fine wire. Next, the wire is wound around a metal bar called a mandrel in order to mold it into its proper coiled shape, and then it is heated in a process known as annealing, softening the wire and makes its structure more uniform. The mandrel is then dissolved in acid.

Second, the coiled filament is attached to the lead-in wires. The lead-in wires have hooks at their ends which are either pressed over the end of the filament or, in larger bulbs, spot-welded.

Third, the glass bulbs or casings are produced using a ribbon machine. After heating in a furnace, a continuous ribbon of glass moves along a conveyor belt. Precisely aligned air nozzles blow the glass through holes in the conveyor belt into molds, creating the casings. A ribbon machine moving at top speed can produce more than 50,000 bulbs per hour. After the casings are blown, they are cooled and then cut off of the ribbon machine. Next, the inside of the bulb is coated with silica to remove the glare caused by a glowing, uncovered filament. The label and wattage are then stamped onto the outside top of each casing.

Fourth, the base of the bulb is also constructed using molds. It is made with indentations in the shape of a screw so that it can easily fit into the socket of a light fixture.

Fifth, once the filament, base, and bulb are made, they are fitted together by machines. First, the filament is mounted to the stem assembly, with its ends clamped to the two lead-in wires. Next, the air inside the bulb is evacuated, and the casing is filled with the argon and nitrogen mixture.

Finally, the base and the bulb are sealed. The base slides onto the end of the glass bulb such that no other material is needed to keep them together. Instead, their conforming shapes allow the two pieces to be held together snugly, with the lead-in wires touching the aluminum base to ensure proper electrical contact. After testing, bulbs are placed in their packages and shipped to consumers.

for the rest of the article, click here

Cambridge University’s Centre for Gallium Nitride has developed a new way of making GaN which could produce LEDs for a tenth of current prices and see household lighting bills reduced by up to 75 percent within five years.  

The Gallium Nitride LED bulbs do not contain mercury, a neurotoxin contained in CFLs that many associate with migraines, brain damage and epileptic fits, like CFL bulbs do.  GaN LEDs also are dimmable, do not flicker and reach maximum brightness as soon as they are switched on. Gallium Nitride LEDs could lower energy consumption for lights from 5 to 20 percent. 

 

 

A GaN LED can burn for 100,000 hours . They can also last
100,000 hours, which is about 1
0 times as long as fluorescent lamps, and would cost $3 each, a huge cost-savings over more expensive LEDs. 

 

This new generation of GaN LED lighting promises to be
three times more efficient than commercially-available fluorescent lighting. 
The new LEDs use Gallium Nitride (GaN), a man-made semiconductor that emits a brilliant
bright light but uses very little electricity. Until now, high production costs have made GaN lighting too expensive for widespread use in homes and offices.

The new technique grows GaN on silicon wafers, which achieves a 50% improvement in cost and efficiency on previous approaches to grow GaN in labs on expensive sapphire
wafers that have been the method of manufacture since the 1990s.

GaN lights could well be just we need to provide our lighting needs more cost-effectively and energy-efficiently for the future. Scientists are very close to achieving highly efficient, low cost white LEDs that can take the place of both traditional and currently available low-energy light bulbs. That won’t just be good news for the environment, it will also benefit consumers by
cutting their electricity bills.”

Bright Idea Illuminates LED Standards

NIST scientists Yuqin Zong (pictured) and Yoshi Ohno have developed a new method for measuring the optical properties of high power LEDs that will allow manufacturers to accurately obtain and compare data. By mounting the LED on a temperature controlled heat sink, the researchers can test the LEDs at their normal operating temperature (important to commercial manufacturers) at high speed (important to LED manufacturers).
Credit: B. Young, NIST

We at http://www.LEDinsider.com are always trying to stay abreast of the latest developments in the science and technology to be able to offer you the consumer the very best LED lighting solutions.  On our LED Superstore website, http://www.LEDinsider.com, we don't include too much of the technical details. Instead, we just try to offer you the best.  However, you should know that we are always out there learning the latest developments so we can offer you the very best.

There has been a challenge in the LED industry that was recently improved by the development of new methods for measuring optical properties of high power LEDs.

The lack of common measurement methods among LED and lighting manufacturers has affected the commercialization of solid-state lighting products. In a recent paper,* researchers at the National Institute of Standards and Technology (NIST) proposed a new, economical method to allow LED and lighting manufacturers to obtain accurate, reproducible and comparable measurements of LED brightness and color.

The quality of the light that high-power LEDs produce depends on their operating temperature. To speed production, LED manufacturers typically use a high-speed pulsed test to measure the color and brightness of their products. However, because pulsed measurements do not give the LED chip time to warm to its normal operating temperature, the measured light output quality is not the same as would be realized in actual lighting products.

The lighting industry uses a steady-state DC measurement approach similar to that used for traditional incandescents and fluorescents. This method involves turning the light on, letting it warm up and measuring the characteristics of the light produced. Although time-consuming, DC measurement provides a more realistic test of how the lighting product will perform in a consumer’s living room. The problem was that researchers did not understand how the DC measurement results correlated with the pulse measurement results that LED manufacturers use.

NIST scientists Yuqin Zong and Yoshi Ohno have created a standard high-power LED measurement method that satisfies the needs of both LED and lighting manufacturers. The NIST method leverages the fact that the optical and electrical characteristics of an LED are interrelated and a function of the LED’s junction temperature (the temperature of the semiconductor chip inside the LED, which is normally very difficult to measure).

The researchers’ new method entails mounting the LED on a temperature-controlled heat sink set to the desired LED junction temperature between 10°C and 100°C. After applying a pulse of electricity through the LED and measuring the voltage flowing across the junction, scientists turn on the DC power to the LED and adjust the temperature of the heat sink to ensure the voltage remains constant. When measuring the light output of an LED, this approach allows researchers to achieve a junction temperature similar to that found in a commercial lighting fixture. The measurement results can be reproducible regardless of pulse or DC operation, or type of heat sink.

The new method also allows the measurement of heat flow in and out of the LED, enabling LED and lighting manufacturers to improve the design of the LED and the thermal management system of the associated lighting product. Effective thermal management is important in lighting products because LEDs perform more efficiently and last much longer at lower temperatures. 
* Y. Zong and Y. Ohno. New practical method for measurement of high-power LEDs. Proc. CIE Expert Symposium on Advances in Photometry and Colorimetry. CIE x033:2008, 102-106 (2008).

For more information visit www.nist.gov

Here is how LED light bulbs work:

LED stands for Light Emitting Diode. LED’s are now found on almost every electronic device including MP3 players, DVD players, TV’s, clock radios and computers. LED’s have been popular for decades, however today they are cheaper, brighter and come in more colors than ever before. While the incandescent light bulb has been the light of choice for at least 100 years, many believe the LED will soon replace it.

What is an LED Light Bulb?
LED’s are very similar to traditional light bulbs, except that they fit directly into an electrical circuit. LED’s do not have a filament, so they generally last for a long, long time without burning out. Because there is no filament, LED’s do not get hot and require far less electric power than traditional light bulbs due to their efficiency. In fact, LEDs are illuminated by electrons that run through the semiconductor material that LEDs are connected to.

What is a Diode?
An LED is a light emitting diode. A semiconductor diode is a two-terminal device, sometimes described as a pn. An LED is fabricated from a semiconductor material. One side of the semiconductor is attached to the P side which is the anode; the other side of the semiconductor is attached to the N side, the cathode. Electricity can flow from the p side to the n side. However, no electricity can flow in reverse. In effect, therefore, a diode is a unidirectional conductor.

Components of an LED Light
Common components of an LED include: A whisker which is connected to the anode, the anvil, which is connected to the cathode, a lens to illuminate the light created for distances and a high impact plastic casing to protect the LED.

The Color of an LED Light
LEDs are available in a variety of colors. While popular colors include red, yellow and green, one of the most difficult colors to create is white. In fact, it is currently not possible to create pure white for mass production. Most LED flash lights or light bulbs today that are white in color are actually not pure white, but whitish-blue.

LEDs Offer Many Benefits
There are many reasons why LED Light bulbs continue to be popular. Here are some of the main benefits they offer:
* LEDs are extremely efficient and require very little current to illuminate. Since they do not have a filament, LEDs don’t heat up, making them perfect for many electronic applications where heat is detrimental. In a traditional light bulb, the vast majority (sometimes more than 80%) of the electricity used to illuminate a light bulb is wasted not in light, but in heat.
* LEDs are manufactured within an epoxy resin epoxy, which means that that they are virtually indestructible. Compared to a traditional light bulb, an LED is far more durable.
* LEDs can be mass produced. Just like traditional light bulbs, they are extremely affordable to produce in large numbers.
* LEDs are considered to be solid state devices. Solid state refers to any item that has no moving parts. When an item has no moving parts, it is generally more reliable because of less friction and fewer parts that can malfunction.

LEDs Conference in Asia March-April L2009

Conference Agenda

 

Tuesday, March 31, 2009

11:00 Registration


12:00   LED Backlight Development Update
 Dr Jeffy Lay, Research and Development Vice President 
 KENMOS, Taiwan


15:00 Welcome Reception


Wednesday, April 1, 2009


7:00
 Registration and Continental Breakfast


8:00    
Welcome and opening remarks
          Derek Mitchell, Conference Producer
          INTERTECHPIRA, US


8:05
   Welcome and opening remarks from Conference Chair
         Dr. Anthony Choi, Assistant Professor
         UNIVERSITY OF HONG KONG, Hong Kong

Session 1: Market and Industry Overview


8:15
   LED Global Market Forecast, from 2007 – 2012
             •  LEDs used in SSL illumination 
             •  High brightness LEDs (mobile devices, automotive/vehicle, other)
             •  LEDs used in signage and professional displays
             •  LEDs used in test/measurement & medical science applications
         Stephen Montgomery, President,
         ELECTRONICAST CONSULTANTS – APAC, Japan


8:40   ENERGY STAR Lighting: Keeping Pace with New Technologies and Performance    Improvements

             •  ENERGY STAR product labelling program: history, goals, scope and influence with consumers
             •  Overview of ENERGY STAR lighting programs
             •  Incorporation of solid state lighting and other new technologies
             •  How to get involved with ENERGY STAR
        Alex Baker, ENERGY STAR Lighting Program Manager
        U.S. ENVIRONMENTAL PROTECTION AGENCY, US


9:05
  Recent LED Technology Advances in ASTRI
             •  Introduction of ASTRI
             •  LED chip and packaging development
             •  LED application technologies for display
             •  LED application technologies for general lighting
       Dr Enboa Wu, Vice President and Group Director
       HONG KONG APPLIED SCIENCE & TECHNOLOGY RESEARCH INSTITUTE CO. LTD., Hong Kong

Session 2: Applications of LEDs: Illumination


9:30   Solid State Lighting: System Quality and Reliability

             •  Introduction
             •  Challenges of SSL
             •  Standards of SSL
             •  Design for quality and reliability
             •  Future
         Dato Yap Peng Hooi, Vice President and Managing Director
         OPTOELECTRONIX, INC., Malaysia


9:55
   Morning refreshments and networking break


10:20 LED Lighting Ready for General Illumination

         Tony Van De Ven, Director – Asia Pacific LLS 
         CREE ASIA-PACIFIC LIMITED, Hong Kong

10:45 Fast Adoption of LED in SSL Applications 
             •  LED adoption in SSL application
             •  Successful implementation case study
             •  Associated challenges of the adoption
             •  Future trend in public lighting
         Louis Lam, Vice President, APAC Sales
         OSRAM OPTO SEMICONDUCTORS, PR China


11:10 Advances in LED Technology for General Lighting
             •  LED technology for general illumination
             •  Factors hindering mass adoption
             •  Latest trends in LED lighting
             •  Advances in LED lighting
             •  Future of intelligent LED lighting
        Dr Majd Zoorob, Chief Technology Officer
        PHOTONSTAR LED, LTD., UK


11:35 SSL Modules: Moving to Standardized Light Sources

             •  Application-based SSL modules
             •  The value of a module approach for luminaire manufacturers
             •  The value of standardization for lighting
         Grant Harlow, Director of Product Marketing, SSL General Lighting
         PHILIPS LIGHTING, Canada


12:00 Roundtable luncheon

Session 3: Applications of LEDs: Structural and Architectural


13:15 LED Lighting Arts of the Water Cube (Beijing Olympics) and the Expo Axis (Shanghai World Expo 2010)

             •  LED is the best light source for architectural lighting
             •  LED application in the Water Cube (Beijing Olympics 2008)
             •  LED application in the Expo Axis (Shanghai World Expo 2010)
         Dr Daniel Wen, Director of International Business
         GRANDAR LIGHTSCAPE CO., LTD., PR China

Session 4: Applications of LEDs: Display Backlighting


13:40  Aggressive Adoption of LED BLU for Large Area TFT LCD and the Present Challenges

             •  Benefits of LED applied in large area TFT LCD by application
             •  Supply chain of LED BLU and its market penetration
             •  Present challenge of large area LED BLU
             •  Review of latest launched TFT LCD with LED BLU
             •  Summary
         Luke Yao, Research Director
         DISPLAYSEARCH, Taiwan


14:05
 Afternoon refreshments and networking break
  

14:30 LED Back Light Unit (BLU) Technology Update
             •  Briefing on notebook LED BLU structure and working principle
             •  Major solutions used for notebook LED BLU in current industry
             •  Major technology issues and comparison between different solutions
             •  Developing trend for NB LED BLU
         Dr Jeffy Lay, Research and Development Vice President 
         KENMOS, Taiwan

Session 5: Advances in Thermal Management


14:55 Understanding Reliability of Thermal Management Substrates for LEDs
             •  Need for thermal management
             •  Failure modes for LED package performance
             •  Material properties to enhance reliability
             •  Bergquist experimental data and models
             •  Conclusions
         Sanjay Misra, Director of Research and Development  
         THE BERGQUIST COMPANY, US


15:20 Enabling New LED Designs Through Innovative Cooling Technology
             •  Thermal management obstacles
             •  Synthetic jet technology
             •  SynJet advantages and reliability
         Jim Balthazar, President and CEO
         NUVENTIX, INC., US


15:45
 Networking Reception
 All speakers and delegates are invited to this relaxed and informal reception
 to network and discuss the day’s proceedings


Thursday, April 2, 2009


7:30
 Continental breakfast

Session 6: Chip and Technology Advances


8:00   Mid-Conference remarks from the Chair
         Dr. Anthony Choi, Assistant Professor
         UNIVERSITY OF HONG KONG, Hong Kong


8:10   Color Quality of White LEDs – Current Performance and Future Trends

             •  Color quality metrics
             •  General lighting color quality needs
             •  White LED color standards
             •  Current performance and future trends
         Srinath Aanegola, LED Innovation Manager
         GE LUMINATION, India 
 


8:35   LED Standards and Related Policies: A Panel Discussion

             •  Current status of LED industries in China
             •  LED standards and related policies in China and USA
             •  International standards comparison
             •  Industry perspectives on LED standards


9:25
   Morning refreshments and networking break


9:50   The World’s First Quantum Dot LEDs 

             •  High quality white LEDs with very high CRI
         Clint Ballinger, CEO
         EVIDENT TECHNOLOGIES, US 
 

10:15   Remote Plasma Enhanced CVD for Nitride-Based Optoelectronic Device Production
             •  RPCVD – An introduction to the technology
             •  Current status – material characterization and analysis
             •  Deposition equipment and specification
             •  Business model and commercialization plan for BluGlass, Ltd. 
         Conor Martin, Equipment Development Manager
         BLUGLASS, LTD., Australia

Session 7: Advances in LED Manufacture


10:40   Roadmap for LEDs Made for Lighting

             •  The change to SSL is enabled by a new class of LED emitter having 100 lms/watt-dollar
         Trung Tri Doan, Chairman and CEO
         SEMILEDS CORPORATION, US


11:05   Single Optic Solutions for LED Color Mixing

             •  Existing optical solutions for color mixing reviewed
             •  Problems with current optics for color mixing
             •  New optic designs with improved color mixing
         Bob Householder, Director of R&D, Optical Components Platform
         FRAEN CORPORATION, US


11:30   Progress of LED Chip Production on Larger Diameter Sapphire Wafers

             •  Current status of small diameter wafer production
             •  Drivers for moving to larger diameter LED wafers
             •  Key obstacles and benefits
             •  Timing
for volume production for 4”, 6” and 8” wafers
         Raja Parvez, President and CEO
         RUBICON TECHNOLOGY, US


11:55 
Roundtable luncheon


13:10   Light Engine Development for Solid State Lighting

             •  High reliability
             •  High brightness
             •  Color and color stability
             •  Single color bin
             •  Lux/W & Lux/$
         Xiantao Yan, Chief Technology Officer
         LedEngin, Inc., US


13:35
 Afternoon refreshments and networking break


14:00 The Future of Very High Power and High Performance LED Packages

             •  The future, the design and thermal management of very high power and high performance LED packages
             •  Technical and economic requirements from a point of view of the different and future growing LED applications
             •  Design approaches and solutions for state of the art and future LED packages
             •  Outlook on how PerkinElmer envisions the future requirements of high performance LED packages
         Dr Michael Kramer, Managing Director, LED Solutions
         PERKINELMER, Germany

14:25 LED Luminaire Photometric Testing Procedures in North America
             •  Current standards
             •  How is the testing currently being performed
             •  The future of photometric testing standards
             •  Comparing LED luminaire photometry with conventional luminaire photometry
         Michael Grather, President
         LUMINAIRE TESTING LABORATORY, INC., US


14:50 Graded Index Matching Gel for Enhanced Light Extraction in LEDs and External Optics
             •  Development and use of graded index matching gels as LED encapsulants
             •  Theoretical models and empirical testing results
             •  Improving light output with index matching
         John Doherty, Research Chemist
         NYE LUBRICANTS, INC., US


15:15 New Efficient Phosphor for LED

             •  The multiphase green phosphor with two different crystallographic phases, {SrGa2S4} and {MgGa2O4}
             •  High Luminescent Intensity and Color Rendering Index
         Mihail Nazarov, Professor
         GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY, Korea


15:40
 End of conference