Still Plenty of LED/Lighting Breakthroughs Left
... For many in the LED industry who have watched, and lived, the steady march of technology for the last decade, it's pretty easy to get jaded about the technology. Not in a bad way, but just a bored kind of one. "Let me guess," they say, "next year we'll... Read
the editorial... (or permalink is here)
opportunities presented by the increasing rapid adoption of high brightness LEDs,
in all their forms and applications, represents nothing short of a "digital
revolution" for a previously "analog" world. LEDs are having a
substantial disruptive effect on a number of established technologies, and where
there is disruption, there is an intense need for information.
LIGHTimes Online is here to serve the information needs of the LED industry
supply chain, as well as integrators and non-architectural application solution
providers with technology, product and market news updates for these rapidly evolving
devices. Our readership also includes LED packagers, technology enablers and service
companies seeking the the answers to how best to meet their customers' needs.
architectural lighting and applications news of interest specifically to lighting
designers, specifiers, and architectural lighting decision makers, along with
luminaire designers, lighting system integrators and lighting subsystem developers,
please visit our sister publication, Solid
State Lighting Design.
is booming and the 2011/2012 Summit Series is coming back to keep the message
Launched in 2008, the SSL
Summit will bring the quality story to New York City in October 2011, and
then back to LA in March 2012. At every one of the Summit events, the feedback
remains consistent: Just what we need, do it again soon. The Summit brings together
lighting decision makers with industry thought leaders, pioneers, and innovators
from the across the solid state lighting eco-system.
Continuing the tradition, 2011/2012 will continue
to be all about quality, quality, quality.Showcase
participants and sponsors are vetted to separate the wheat from the chaff
(have your IES LM-79 test reports ready!). Last year's event in NYC included
representatives of over 100 million square feet of developed property, and the
one thing we don't want to leave out for 2011 is you! Look into the series information
at www.SSLsummit.com for the details.
Sponsorships are available for the full series.
Jacket Mimics Chameleon LIGHTimes News Staff
October 21, 2014...Remember those TVs with ambient LEDs that were introduced a few years ago
but never really caught on, a company called Drap og Design has created a
jacket with an analogous, chameleon-like function. Drap og Design's Interacket,
which is presented on maker site Hackaday, allows your jacket to mimic the
colors of objects that you touch. Built in sensors detect the color of objects
you touch with your hands. Strips of RGB LEDs change color to match the color
of the object that your hand touches. The kit uses Adafruit Neopixle LED
strips, Adafruit color sensors, and a pair of Arduino Uno Chips. The system is
powered by a single 9V battery
The kit uses a pair of Arduino Uno chips, Adafruit Neopixel LED strips and
Adafruit color sensors, all powered by a single 9V battery. The jacket itself
is made of reflective foil and diffusive fabric to allow the coat to
prominently display the colors picked up by the sensors. From the video, you
can see that the design groups first prototype is cool but it does not have
practical uses. It is far from the resolution required for practical uses in
defense or military applications.
The company says that it has nearly completed its second prototype of the
Interaket. Who knows what future iterations of the jacket could be capable of.
Drap og Design says it also has other design ideas that it is developing that
attempt to give humans the "powers" that some other animals have. You can check
on their progress on the Drap og Design webpage, or by following them on
Ford and NextEnergy Announce Automotive Lighting Challenge LIGHTimes News Staff
October 16, 2014...Ford Motor Company and NextEnergy, have issued a challenge to LED and
automotive lighting suppliers to help advance state-of-the-art automotive
lighting. The initiative was announced during a lighting exposition held at
Ford’s Product Development Center. Some 30 suppliers and would-be
suppliers gathered to address the challenges and opportunities presented to the
automotive industry by the rapidly changing lighting technology.
The initiative includes technological goals that are separate aspects of the
challenge. Parts of the overall challenge include: the Featherweight
Challenge--to develop automotive lighting products that produce the
greatest amount of light but have the lowest weight; Design for
Manufacturing Challenge--device methods of making existing advanced
automotive lighting technology more cost effective and suitable for high-volume
production; Daylighting LEDs--developing automotive interior
LED lights that emulate daylight; Structural
Lighting--Integrate LEDs and OLEDs into interior and exterior
automotive structural components, such as seats and door panels.
An additional technological challenge is to develop more sustainable
products including designing recyclable automotive lighting technology and
biodegradable automotive lighting.
The challenge will officially be launched on Nov. 19 at the Michigan
Advanced Lighting Conference in Lansing. Support for the program comes from the
Michigan Economic Development Corporation’s Pure Michigan Business
Connect initiative to help identify qualified Michigan suppliers.
Ford and Detroit-based NextEnergy will outline a scoring matrix to determine
winners. Late next year, competing teams will present their ideas to a panel of
Ford and NextEnergy experts, with one or more prizes awarded. The prizes,
provided from the state of Michigan through Michigan Economic Development
Corporation and NextEnergy, will include up to $40,000.
“Ford is very interested in maintaining leadership with the use of
innovative lighting for the benefit of our customers,” said Dean
Stevenson, chief engineer, Ford Global Design Engineering.
Wayne Bahr, chief engineer, Ford Global Body Exterior Systems, said the
challenge “should help us innovate faster and increase the capability
of our lighting supply base.”
The 2015 Ford F-150 uses LED headlights, side view mirror lights and cargo
bed lights. The 2015 Ford Mustang employs a LED-based brake lights, turn
signals and taillights.
“NextEnergy’s collaboration with Ford will encourage open
innovation,” said Jean Redfield, president and CEO, NextEnergy.
“While this technology challenge will solicit global solutions, we
expect Michigan’s advanced lighting industry to be among the solution
providers, driving significant economic activity in the state."
Intelligent LED Solutions Launches New UV LEDs for Industrial Applications LIGHTimes News Staff
October 16, 2014...Intelligent LED Solutions (ILS) of the UK, has launched new high-power UV
LEDs for industrial applications. The company designed the UV power LED to have
higher thermal endurance, for better reliability at higher temperatures. The UV
LED comes in a range of output powers, package formats and wavelength options
ranging from 365nm to 420nm and output from 320mW to 7000mW.
The high power UV LED range is suited for industrial applications such as
DNA sequencing, counterfeit detection, polymer curing, ink curing, aquarium
lighting, and medical applications. The UV LED has a vertical chip structure on
the company’s patented metal alloy substrate. The LED offers the
company’s advances in optical output and high thermal conductivity.
“UV LED technology is playing an increasing role in industrial
design,” said Adrian Amor, director at ILS. “The new high
power UV LED range pushes the boundaries of what is possible. The high power
LED offers a more efficient and more robust solution for engineers working to
develop demanding applications that require a UV light source.”
“For those exploring UV LED technology for the first time, our
team at ILS are able to provide design support and prototyping within the
European market place,” said Adrian Amor. “We also have
the capability to deliver production LED and assemblies to wherever in the
world that the customer’s manufacturing or assembly is being
ILS is making available star boards with wires, strips and component LEDs
through RS Components.
Duke Researchers Speed Up Fluorescence for Faster Turn-on LEDs LIGHTimes News Staff
October 14, 2014...Duke Researchers Speed Up Fluorescence for Faster Turn-on LEDs
Duke University researchers have made fluorescent molecules emit photons of
light 1,000 times sooner after being turned on than normal. While LEDs appear
to turn on instantly, they are apparently not fast enough to make light-based
communications truly practical. Modern telecommunications systems, operate
nearly a thousand times faster. Atoms in an LED can emit about 10,000 photons
when the LED is turned on. The researchers sandwiched fluorescent molecules
between metal nanocubes and a gold film to achieve record photon emission rates
from the molecules. The results appear online October 12 in Nature
“One of the applications we’re targeting with this research
is ultrafast LEDs,” said Maiken Mikkelsen, an assistant professor of
electrical and computer engineering and physics at Duke. “While
future devices might not use this exact approach, the underlying physics will
Mikkelsen’s group created 75-nanometer silver nanocubes and trapped
light between them, producing much more intense light. Through an effect called
Purcell enhancement, the molecules emit photons at a faster rate when
fluorescent molecules are placed near intensified light.
The group with the help of co-author David R. Smith, the James B. Duke
Professor and Chair of Electrical and Computer Engineering at Duke, used
computer simulations to determine the exact size of the gap between the
nanocubes and gold film so that the gap’s resonate frequency maximized
the photon emission rate for the color of light that the molecules respond to.
The optimum gap was just 20 atoms wide. Because the experiment used many
randomly aligned molecules, the researchers believe they can get the emission
rate even higher.
Osram Claims Lab-Produced LED Brightest Ever for Car Headlights LIGHTimes News Staff
October 14, 2014...At Vision Congress in Paris (October 14 and 15, 2014) Osram Opto
Semiconductors is showcasing an LED for car headlights, which the company says
has three times the luminance of existing versions. The company notes that this
single LED can provide a complete low beam. Whereas several LED chips were
required in the past with the number dependent on the design and the type of
The company says it developed the new LED’s tremendous brightness
using a combination of its ceramic conversion technology, its UX:3 chip
technology, and high-current technology used in projection applications. Osram
Opto boasts that future headlights could be much smaller with every lighting
function smaller than a box of matches.
While currently the LED being showcased is a lab-based result, the company
contends that a low beam unit measuring only 30 mm x 50 mm generating a 1400
lumens from a single LED chip could be a reality in just a few years. The 200
megacandelas per m² LED has three times the luminance of existing LEDs for
these applications. It loses less than ten percent of its intensity even at
high operating temperatures of 85°C, according to the company.
"In developing the LED we applied our extensive experience in projection
applications to combine the high-current technology used in such applications
with UX:3 chip technology and ceramic conversion technology which is standard
practice for white headlight LEDs,“ said Stefan Grötsch, Senior Key
Expert at Osram Opto Semiconductors.
Like the company did with its Osram Ostar used in projection applications,
the company soldered the chip directly to the copper. The copper allows large
amounts of heat from the high-output LED to be dissipated much more easily. The
company says that under laboratory conditions, the light distribution from the
LED proves that it will meet the standards for automotive headlights.
GPE Ardenghi Srl Introduces New Screen Printer With UV LED Curing
October 9, 2014...GPE Ardenghi srl of Hillsboro, Oregon USA, has introduced the new Mod. GPE/24-LED automatic screen printer. UV LED curing technology enables the printer. The new machine can perform screen printing on pens, barrels and other small round articles. The printer employs LED technology from Phoseon that provides the maximum UV output with lower energy consumption, and cooler operating temperatures that allow for printing on heat sensitive substrates.
SiliconCore Launches 1.2mm Pixel Pitch LED Display LIGHTimes News Staff
October 9, 2014...SiliconCore is launching what the company claims to be the highest
resolution LED display ever manufactured, the Lavender 1.2mm. The company will
showcase the new display at Infocomm MEA on Booth TA-120 from 13th – 16th
October in Dubai. The Lavender 1.2mm achieves Full HD in a 110” diagonal
The Common Cathode LED manufacturer claims that the new display is the first
ever to achieve 1.2 mm pixel pitch. The display is ideal for close proximity
viewing within command, control, simulation, as well as corporate or broadcast
viewing. Siliconcore says the display uses a fraction of the power consumption
of traditional displays.
SiliconCore uses what the company calls common cathode technology to drive
the LEDs. It replaces the traditional common anode approach. According to the
company, the common cathode technology design is a much more efficient. It
ensures that less power is wasted as heat and increases the lifespan of the
display for a low total cost of ownership.
Eric Li, President and CEO of SiliconCore commented,
“We have been working towards this product for several years, with
the Orchid 1.9mm and Magnolia 1.50mm pioneering the way for its development, so
we are very proud to finally be shipping."
“With a close proximity viewing distance of less than one metre,
LED is now operating in the same space as existing large format display
technologies. The display also comes with the additional benefit of being
scalable for any size or shape application and due to the nature of LED is
truly seamless. The clarity, uniformity and viewing angle are other market
leading benefits that now new markets can utilise for comfortable large screen
Being a Morning or Evening Person May Be the Result of Light Quality According to Royal Philips LIGHTimes News Staff
October 9, 2014...A Royal Philips whitepaper has gathered findings from over ten years of
research on the effect of light on human sleep/wake cycles known as
“circadian rhythms”. The whitepaper asserts that the amount and
quality of light a person is exposed to daily may be responsible for their
Monday morning blues. Furthermore, the report claims that the light may
ultimately dictate whether you are a morning person or a night owl.
In humans, the company notes, lighting plays helps regulate circadian rhythm
or body clock. The report says that our circadian rhythms run a little slower
than an artificial clock on average, going for 24 hours and 30 minutes. The
report says that for this reason people are naturally inclined to sleep and
wake 30 minutes later each day. So, if not regulated, our sleep/wake cycle
could be off by more than 2 hours by the end of the week.
Alarm clocks can offer one method of managing the time lag that our
naturally slower circadian rhythm creates. However, Royal Philips says that
scientists recently discovered that the color temperature of light which hits
the photoreceptors in our eyes, specifically its blueness, can regulate our
internal body clock, and can also reset it every single day.
The rising and setting sun has regulated our body clocks like those of many
animals for thousands of years. Today high intensity artificial blue-rich light
can also reset our body clock because of its qualitative resemblance to natural
morning light. Our modern 9 to 5 lifestyle means that we may not be getting
enough sleep with our natural tendency to sleep in. The company notes that
while longer sleep during weekends may compensate for the lack of rest during
the week, it can reset a later circadian rhythm the following week, resulting
in ‘Monday morning blues’.
“The message from nature is clear,” said Light and
Sleep Scientist at Philips Research, Luc Schlangen. “Our bodies have
evolved a kind of steering wheel, constantly adjusting the sleep wake cycle,
driven by light, allowing us to adapt to the differing daylight lengths during
the seasons. We can help regulate our body clock through lighting by providing
light injections at appropriate times, for instance through brighter office
lighting on Monday mornings.”
Philips says that exposure to blue-rich light, which is like natural
sunlight in the morning can speed up our circadian rhythm to wake us
Lighting expert Professor Derk Jan Dijk of the University of Surrey added,
“Dimming lights a few hours before bedtime facilitates a more rapid
onset to sleep and it will prevent your body clock from being shifted to later
hours. If you want to shift your clock to earlier hours it is good to be
exposed to light and specifically high intensity blue-rich light, when you wake
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