What We Can and What We Still Cannot Do with LEDs
... In recent years, the LED makers have raised the bar on performance of their LED chips and modules. One of the biggest changes has been in lumens per dollar. In both the high-power and mid-power LED chips and modules. Cree, Osram, and Philips have been at the forefront of...
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Cree Files Patent Infringement Lawsuits Against Havatek and Kingbright
LIGHTimes News Staff
September 17, 2014...Durham, North Carolina-based Cree Inc. has filed patent infringement
lawsuits in the United States District Court for the Western District of
Wisconsin. The lawsuits aim to prevent Harvatek Corporation and Kingbright
Corporation from allegedly infringing Cree’s patents. Among other things,
these patents protect Cree’s LED component portfolio, including
Cree’s white light LEDs.
The Cree patents included in the lawsuits are: U.S. patent # 6,600,175,
and U.S. Patent # 8,659,034,
which are all titled "Solid state white light emitter and display using same".
The lawsuits also include Cree's U.S. Patent # 7,910,938
and # 8,766,298,
which are both titled, "Encapsulant profile for light emitting diodes". The
sixth Cree patent included in the lawsuits is U.S. patent # 8,362,605
titled, "Apparatus and method for use in mounting electronic elements".
“Cree continues to invest significant resources in developing
industry-leading technologies, and it’s paramount that we protect the
investment of our current licensees, shareholders and customers,”
said Brad Kohn, Cree general counsel.
EPA's Energy Star 1.0 Specification to Go Into Effect September 30; EPA Publishes 1.1 Specification
SSL Design News Staff
September 18, 2014...The U.S. Environmental Protection Agency (EPA) published a finalized version
of the Energy
Star Lamps 1.1 specification. The EPA also issued a reminder that the
Energy Star Lamps V1.0 specification will replace the Compact Fluorescent Lamps
(CFL) V4.3 and Integral LED Lamps V1.4 specifications on September 30, 2014.
In a letter
to Energy Star Lighting Stakeholders, the EPA reported the finalized changes to
the Lamps 1.0 specification, which are reflected in the Lamps 1.1
specification. Based upon stakeholder feedback, the EPA says it modified the
diameter to length ratio requirement for globe lamps from .9 to .8. This is
apparently the only change. The EPA says that partners may begin certifying to
Version 1.1 requirements immediately, and notes that currently certified
products are not affected, besides any products excluded based on the
clarification of decorative globes ratio change
The EPA also updated its lamp center beam candle power (CBCP) calculator and
its TM-21 LED extended life
Excelitas Technologies® Unveils New OmniCure® AC8 Series UV LED Curing Solutions
LIGHTimes News Staff
September 18, 2014...Excelitas Technologies Corp. launched its new OmniCure® AC8 Series UV LED
Curing Systems. According to the company, this latest addition to the AC Series
of UV LED Curing solutions features enhanced process control, superior optical
uniformity, and ease of integration. The systems support the curing of inks,
adhesives and coatings. The AC8 series allows multiple LED heads to be adjoined
to create a larger curing area. The company says that the ability to adjoin the
LED heads increase the system’s flexibility without compromising output
Excelitas says that it specifically designed these new high power,
air-cooled UV curing systems with small form factors for applications in
industrial, medical, and electronics manufacturing including print, conformal
coatings, touch panel/display, and solar panels.
The OmniCure AC8150/AC8150P, AC8225/AC8225P, and AC83000 systems have custom
front-end optics to deliver uniform, high powered, high peak irradiance at
different working distances. According to the company, the AC8 Series employs a
patented process to control individual UV LED module outputs and ensure
uniformity over the curing area. Precise control of the UV irradiance level
ensures consistent and reliable irradiance with the correct amount of UV light
provided with every exposure. The company asserts that the air-cooled design
with a small form factor enables system upgrades with minimal disruption and
seamless integration into new or existing production lines.
“In keeping with our commitment to deliver innovative UV curing
solutions, we are excited to offer the new OmniCure AC8 Series,”
said Oliver Scheuss, vice president, Solid State Lighting and UV/Microscopy for
Excelitas Technologies. “Excelitas strives to develop products to
help customers be more productive and cost efficient. The OmniCure AC8 Series
helps do just that by increasing throughput for a wide range of applications in
the curing of inks, adhesive and coatings.”
The UV curing solutions in the OmniCure® product family will be showcased at
The Assembly Show in Rosemount, IL at the Excelitas booth #1424 from October
28-30, 2014; MD&M in Minneapolis, MN booth #641 from October 29-30, 2014;
and IWCS in Providence, RI, booth #230 from November 10-11, 2014.
Next Generation Luminaires™ Design Competition Winners Announced
SSL Design News Staff
September 18, 2014...At the LED Show in Los Angeles, the winners of the sixth annual Next
Generation Luminaires (NGL) Solid-State Lighting Design Competition were
announced. The winners included 57 commercial LED indoor lighting products
recognized for excellence. The U.S. Department of Energy (DOE), the
International Association of Lighting Designers, and Illuminating Engineering
Society of North America sponsored the NGL competition since its launch in 2008
to "promote excellence in the design of energy-efficient LED luminaires for
general illumination in commercial lighting applications."
The competitors of the 2014 NGL competition showed a marked increase in
efficacy. More than half of the Recognized products achieved efficacies at
least 20% above the DesignLights Consortium® minimum. Ten products exceeded 100
lm/W efficacy. Judges found significant improvement in glare control and gave
generally high ratings for illuminance, color, and light distribution. However,
judges remained seriously concerned about serviceability. The greatest number
of competition entries came in the pendant, recessed troffer, and high-ceiling
categories. The competition had an increase in the number of decorative
entries. While most of the entries provided optional dimming, constraints on
equipment, facilities, and time limited the judges’ evaluation of dimming
The goal of NGL is to make it easier for lighting designers and specifiers
to find LED lighting products that are worthy of specification. Therefore,
recognized products have to measure up on many metrics. A panel of ten judges
from drawn from the architectural lighting community evaluated entries and were
scored them on illuminance, color, glare control, light distribution,
appearance, value, and serviceability. The judges based the lumen maintenance
and luminous efficacy ratings on LM79, LM80, and TM21 data that the
manufacturers submitted to DOE’s LED Lighting Facts® program.
The LED technology and product designs have improved over the past few
years. The NGL Competition made its requirements increasingly demanding in
order to ensure that only the best products were even qualified to be
“Any product that earns the recognition of the NGL judges has to
be pretty special,” said DOE Solid-State Lighting Program Manager
Jim Brodrick. “They’re a tough audience – impossible to
fool and hard to please.”
A total of 266 products were proposed for submission to the 2014 NGL indoor
competition. Of these, 153-an increase of more than 50% over 2013 – made
it to the judging phase with complete documentation and market-ready samples.
The documentation included luminaire and component specification sheets, LM-79
test reports, lumen maintenance projections, warranty statements, and marketing
materials. The documents, which were mostly submitted through LED Lighting
Facts, help ensure that actual performance matches product claims.
The judging took place at the facilities of Intelligent Lighting Creations
in Arlington Heights, Illinois. Judges examined all 153 products over the
course of three days in their characteristic installations, including varying
ceiling conditions and mounting heights.
The judges identified 57 products as Recognized, for being worthy of
specification in the application for which they were designed. Of the 57
recognized products, four were given the additional designation of Best in
Class for standing out above all the other indoor products entered in 2014.
Four additional products, which were not yet on the market at the time of the
judging and were not among the Recognized products, were designated as
Emerging, for being noteworthy for their possibilities. This year, judges gave
special acknowledgement to 10 Recognized products that also demonstrated high
efficacy, and to eight Recognized products that demonstrated superior
Luminaires from four different manufacturers covering four areas of lighting
were awarded Best in Class. Best in Class winners included Koncept's Mosso Pro
LED desk lamp; Finelite, Inc.'s Series 11LED Micro Profile family of cove
mounted luminaires; Cree, Inc.'s LS Series utility luminaire; and Acuity
Brands® – Mark Architectural Lighting's Slot 2 & 4 LED – Direct
and Bi-Direct family of surface mounted and pendant linear luminaires.
DOE Publishes Latest Energy Savings Forecast of Solid-State Lighting
SSL Design News Staff
September 16, 2014...The United Stated Department of Energy (DOE) has published a new
report predicting the energy savings of LED-based white-light sources
compared with conventional white-lighting. The sixth version of the Energy
Savings Forecast of Solid-State Lighting in General Illumination Applications
compares the lighting energy consumed annually in the U.S. with and without
further adoption of LED lighting.
The report projects that by 2030, LEDs lighting will save an estimated 40%
compared to conventional light sources. At the current market adoption
trajectory, LED lighting is projected to reach 48 percent of the lumen-hour
sales of the general illumination market by 2020, and 84 percent by 2030.
By 2030 savings from LED lighting is expected to total 3.0 quads (261 TWh)
in that year alone, for more than $26 billion at today's energy prices. The
report points out that is equivalent to the total energy consumed by almost 24
million U.S. homes today.
If the DOE reaches its ambitious goals for LED price and efficacy, LED
lighting will attain about 68 percent of market share in lumen-hour sales in
2020 and over 90% in 2030. The report forecasts that attaining these goals
would create additional energy savings of 20 percent in 2030 alone for a 60
percent total decrease in lighting energy consumption compared to the LED
lighting penetration at its current levels.
Cree Announces New High Power LEDs with Lowest System Cost
LIGHTimes News Staff
September 16, 2014...Cree, Inc. has reexamined the formula for calculating the costs of LED
modules and LED lighting. The company noted that while previously, an LED was
the most expensive piece of the lighting puzzle, the LED currently makes up
only about 30 percent of the total cost. Cree pointed out recently that other
components such as the heat sink, the driver, and optics are also high in
proportion of total cost, and modules that reduce these costs can save
Based upon these ideas of cost savings without compromising performance, the
company has introduced the XLamp® MH-B LED, a new generation of high power
LEDs. Cree claims that the XLamp MH-B delivers better performance and a more
effective way to achieve low-cost systems than mid-power (MP) LEDs. According
to Cree this reduction comes from the reduction in the heat sink size and cost
as well as a reduction in the required number of LEDs and the size and number
The MH-B LED employs Cree’s high reliability ceramic package
technology, the enables it to operate at higher temperatures than mid-power
LEDs with no reduction in rated lifetime. Cree says that the ability to operate
at higher temperatures enables a 60 percent reduction in heat sink size and
cost. Also, because each LED is brighter and smaller, an LED module can use up
to 26 times fewer LED chips than MP LEDs to achieve the same level of
performance. Cree reportedly optimized the XLamp MH-B to simplify LED system
designs for applications currently using multiple mid-power LEDs.
“Cree has once again invented a lighting-optimized solution that
can lower my costs and decrease manufacturing times,” said Frank
Chen, technical director, Zhejiang Shenghui Lighting Co., Ltd. and Sengled
Optoelectronics Co., Ltd. “While chip-on-board LEDs are an attractive
alternative to MP LEDs in terms of reliability and cost, they aren’t
compatible with my automated manufacturing processes. The new XLamp® MH-B LED
finally gives me a more reliable alternative to mid-power LEDs – I no
longer have to compromise my brand and reputation to achieve a lower system
The XLamp MH-B has a small 5-mm by 5-mm light emitting surface and features
Cree’s EasyWhite® technology. Cree points out that the XLamp MH-B offers
simpler optics, tighter beam angles, easier color consistency, and a more
traditional appearance. As a single LED, the XLamp MH-B LED provides up to 830
lumens at 175 mA and 37 Volts This translates to efficacy of about 118 lm/W. It
can also be used in arrays for higher lumen applications such as downlights,
high bays, and outdoor area lights.
“The new XLamp® MH-B LED combines the reliability and
manufacturability of Cree’s high power LEDs with the simplicity and
performance of our CXA LED arrays,” said Paul Thieken, director of
marketing, LED components. “MH-B introduces a new technology platform
that gives customers the best of both technologies, while avoiding the
limitations of mid-power LEDs.”
The XLamp MH-B LED comes in correlated color temperatures of 2700K –
6500K with high color rendering index options. Product samples are available
now and production quantities are available with standard lead times.
Massive Attack Tours with XL Video LED Displays
LIGHTimes News Staff
September 16, 2014...XL Video supplied LED screens and d3 media servers for Massive
Attack’s recent festival tour. The tour featured a video concept
co-designed by UVA and Icarus Wilson-Wright. Massive Attack is well known for
their use of video to reinforce their music’s message and immerse
audience members in its visceral live shows.
For over a decade, the band has been developing their own distinctive
text-based style of video content since they first incorporated it into their
show. The group can translate the text into the local language/s for each
Phil Mercer and Steve Ackein managed the project. The initial brief for the
tour’s video design specified that it should be flexible and have high
impact for a mix of festivals and own show headliners. The band wanted the
screen to be semi-transparent and through-lit from behind.
Wilson Wright explained that they decided to use XL’s new Radiant
MC-7T black-face 7mm resolution for its good resolution, light weight and the
fact that it is very dark when off.
The display stays lurking in the shadows. Each screen measures 4.2 meters
wide by 1.2 meters high, offering 560 x 160 pixels. The XL designed the system
to be configured in a standard 6-screen format on two levels and be expandable
up to nine screens on three levels. The screens were designed to independently
rotate louvre style to produce different architecture and shapes behind the
band during the performance. The media server controlled the rotation.
XL devised a series of stepper motors that powered an axle-based system. The
d3 media server controlled the motors which allowed 180 degrees of travel.
Two pins attached each axle to the screen support structures, and two
different sets of support structures were toured for maximum flexibility
depending on the venue or gig. One support structure was based on a scissor
mechanism and an aluminum option which utilized motors to lift the louvers.
Wilson-Wright ran the d3 server from FOH. They took in timecode there and
sent the signal down a DVI fibre link to the screen processors onstage, and via
a MOXA box, data was distributed to the screens. The show’s video content
was newly commissioned by UVA, with Wilson-Wright looking after re-editing some
of the ‘heritage’ items from the band’s extensive digital
archive and also creating some new material. All the time he worked in close
collaboration with Lighting Designer Tim Oliver to optimize the different live
show looks with lighting and the screen louvers as they moved into different
UVA created a custom grid software module for the d3, upon which text and
graphics can be placed and then scaled and sized to maintain complete pixel
integrity without aliasing or blurring. Massive Attack’s show video
allows multi-lingual text translations including Cyrillic and Chinese
characters. With bi and tri-lingual shows the norm, current local and world
events and issues can be fully integrated and communicated to the audience in
the performance’s context.
Natural Light at Offices Improves Sleep Quality of Workers at Night
LIGHTimes News Staff
September 16, 2014...A new study from the University of Illinois at Urbana-Champaign and
Northwester Medicine found that office workers with more sunlight exposure at
the office had longer sleep duration, better sleep quality. Additionally, they
had higher levels of physical activity and an overall better quality of life in
terms of vitality and health compared to office workers with less natural light
exposure in the workplace.
Employees with windows in their offices received 173 percent more white
light exposure during work hours. They reported sleeping an average of 46
minutes more per night than employees who were not exposed to natural light at
the office. Workers in offices with windows also tended to report more physical
activity than those without windows.
In the study, workers without windows reported poorer scores on quality of
life measures that relate to vitality and physical problems in addition to
poorer outcomes in terms of overall sleep quality and sleep disturbances. The
study was detailed in the Journal of Clinical Sleep Medicine in June.
“There is increasing evidence that exposure to light, during the
day --particularly in the morning -- is beneficial to your health via its
effects on mood, alertness and metabolism,” said the study’s
lead author, Phyllis Zee, M.D., a Northwestern Medicine neurologist and sleep
specialist. “Workers are a group at risk because they are typically
indoors often without access to natural or even artificial bright light for the
entire day. The study results confirm that light [exposure] during the natural
daylight hours has powerful effects on health.”
“Architects need to be aware of the importance of natural light
not only in terms of their potential energy savings but also in terms of
affecting occupants’ health,” said co-lead author Mohamed
Boubekri, an associate professor of architecture at the University of Illinois
Boubekri noted that one simple design solution could help make sure that
workstations are within 20 to 25 feet of the peripheral walls containing
windows. ”Daylight from side windows almost vanishes after 20 to 25
feet from the windows,” he said.
The study included 49 day-shift office workers; 27 of which were in
windowless workplaces, and 22 were in workplaces with windows. Study
participants filled out form reporting on their quality of life and sleep
quality. The researchers evaluated the forms with the Pittsburgh Sleep Quality
Index (PSQI). Actigraphy measured sleep, light exposure and activity in a
representative subset of 21 participants including 10 in windowless workplaces
and 11 in workplaces with windows.
Actigraphy is a device worn on the wrist that measures light exposure as
well as activity and sleep and keeps a record of it. The researchers used the
motion to determine activity levels while awake and to calculate sleep time.
The researchers also determined luminance as a measure of light exposure during
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