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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Leti and Luciom Focus on High-data-rate LiFi Applications
LIGHTimes News Staff
September 11, 2014...Luciom, which develops visible-light communication using LEDs, and CEA-Leti
of Grenoble, France have launched a project to develop high-data-rate LiFi
transceivers. In mid-2015, Luciom plans to begin offering the first
high-data-rate bidirectional light-fidelity (LiFi) products that can work with
different LED lighting sources, and can work on various mobile devices.
Luciom notes that Visible Light Communications (VLC) has gained significant
momentum in recent years, primarily because LEDs are expected to become
predominant. Luciom goes so far as to suggest that eventually LiFi will be more
efficient and economical compared to wireless RF communications do to rapid
market penetration and reduced production costs.
LEDs can be modulated at very high frequencies. High-speed oscillations are
invisible to humans allow very high data rates of information transmission.
Earlier in 2014, Leti demonstrated a new prototype for wireless high-data-rate
Li-Fi transmission that uses LED engines in commercial lighting. Leti says that
the technology achieves throughputs of up to 10Mb/s at a range of three meters.
At this data rate, the company says it would be suitable for HD video streaming
or Internet browsing, using direct or even indirect LED lighting with a
luminous flux of under 1,000 lumens. Luciom says that the technology will be
adapted to meet the needs its transceivers.
Luciom claims that its technology allows any LED lighting source to act as a
high-speed data transmitter that is both secure and environmentally -friendly.
The technology, which uses integrated circuits and transceivers, turns LED
light sources into positioning beacons, which transmit signals that indicate
the location of the specific luminaire. The technology so far only allows one
way communication from the light source to the
Smartphones and tablets can become LiFi receivers using their camera as a
receiver. When combined with WiFi or Bluetooth in a 3.5mm audio jack Bluetooth
dongle, a LiFi application launched from a smartphone can transmit to a server.
The companies hope to go a step further than what can be done now to offer a
receiver and transmitter (transceiver) that can be connected to a smartphone
via an audio dongle.
Luciom says its technology can be combined with the use of gyro-sensors in
smartphones and tablets to predict movement between two LiFi beacons and
calculate a very accurate position of the user.
Indoors, when GPS technology does not work, communication between phones and
smart indoor LED lighting can be used, Locium says that the localization
application can provide additional personalized services or information to
customers as well as information to the infrastructure manager.
The company is targeting high-data-rate video transfer via LiFi in future
products and apps. The project between Leti and Luciom builds on their previous
collaboration in which Leti developed an optical over-the-air data link for the
company that allows the transmission of true HD video from a lamp to a handheld
"Our indoor geo-localization could guide shoppers through the maze of
large shopping malls to the stores they are seeking, and LED lighting in
museums could be used to guide visitors through an enriched tour of the
displays and exhibits," said Michel Germe, CEO of Luciom. "Working
again with Leti, we will be able to bring new, bidirectional transceivers that
enable these applications to market in 2015."
"Luciom was one of the first companies to see that LEDs and LiFi can
offer a powerful, secure and highly energy-efficient communications alternative
to WiFi," said Leti CEO Laurent Malier. "With Leti's first proof of
concept developed earlier this year and its expertise in RF communications, we
expect data-transmission rates in excess of 100Mb/s with traditional lighting
based on LED lamps."
Intematix and SABIC Collaborate on Remote Phosphor Lighting
LIGHTimes News Staff
September 11, 2014...Intematix Corporation, a maker of phosphor solutions for LED lighting, has
collaborated with SABIC’s Innovative Plastics business to create the
ChromaLit Linear. The ChromaLit Linear uses Intematix's remote phosphor
technology and SABIC’s LEXAN™ LUX resins. According to Intematix,
the ChromaLit Linear has increased optical efficiency and better light
uniformity than conventional LED luminaires.
“SABIC is excited to have worked with Intematix to design a
solution that successfully addresses a historic challenge with LED lighting
used in commercial applications. In addition to being more efficient, the new
LED system can be both extruded and injection molded,” said
Venugopal Koka, director of electrical industrial and lighting marketing for
SABIC’s Innovative Plastics business. “Our collaboration and
combined expertise in both material and LED technology has enabled the
development of this solution that brings uniform lighting and potential system
cost savings to an expanded set of LED applications.”
The system uses remote phosphor (phosphor that is not directly on an LED)
and a blue LED energy source. The blue light excites the independently
positioned phosphor to emit white light. Intematix contends that when the
phosphor has been separated from the energy source it results in better
lighting uniformity and consistency. Intematix selected SABIC’s LUX
transparent, diffusion and reflective grades of Lexan plastic for their
ChromaLit Linear remote phosphor product.
The LEXAN LUX base material provides a UL94 flame rating of V0. The
ChromaLit Linear product delivers naturally uniform, high-quality light with
conversion efficacy of up to 215 lumens per radiant watt or up to 163 lumens
per system watt when used with the most efficient blue LEDs available.
“We are excited about continuing our close relationship with
SABIC,” said Mark Swoboda, CEO for Intematix. “We expect a
whole new set of valuable remote phosphor solutions emerging as we draw upon
SABIC’s world-class expertise in advanced thermoplastics. Our experience
has demonstrated that bringing our two companies’ innovations together
results in ground-breaking products that accelerate market adoption of
LED-based lighting systems.”
SABIC’s Innovative Plastics business and Intematix plan to continue
collaborating to develop new technology to help enable lighting OEMs to take
advantage of expanded remote phosphor solutions for solid-state lighting (SSL).
Intematix says that its continued collaboration with SABIC will further combine
their complementary expertise.
Everlight Adds High CRI LEDs for Natural Light Technology Campaign
LIGHTimes News Staff
September 11, 2014...Everlight of Shulin, Taiwan, reports that it is supplementing its LED Lighting product portfolio, which currently features a CRI of >80Ra, with higher CRI versions. The new Natural Light LED models will have a CRI >95Ra, averaging 98Ra. The company is ultimately targeting 100 CRI. Everlight's first LED series to implement the Natural Light Technology is the new 3-50W Ceramic COBs (JU Series) and Metal PCB COBs (XUAN Series). All other LEDs will have Natural Light versions in Q4of 2014.
LG Innotek Launches AC Direct LED Lighting Modules and Packages
SSL Design News Staff
September 11, 2014...LG Innotek of Seoul, Korea, announced that the company is beginning to
produce Alternating Current (AC) direct LED lighting packages and modules. On
the surface, these appear to be similar at least in function to the Acrich
modules from another Seoul-based company, Seoul Semiconductor.
The company points out that AC direct LEDs rely on alternating current, the
standard power format for lighting in homes, offices, hospitality, and retail.
Conventional LED lighting uses Direct Current (DC) with Switched Mode Power
Supply (SMPS) units. SMPS units reportedly add cost and complexity to the
The AC direct LED from LG Innotek embeds a micro-drive integrated chip in
the LED that controls the current. The company notes that this allows the LED
solution to occupy a smaller space than conventional LED solutions that require
SMPS units. LG Innotek contends that it can reduce costs by up to 30 percent
compared to conventional DC LED solutions.
LG Innotek is debuting a range of eight products. These products include
five types of AC direct LED packages and three types of lighting modules (a
packaged LED with an integrated circuit board). The company plans to market
three more AC LED modules and two more AC LED packages this year.
AC direct LED packages include the 5250HV(High Voltage), 3030HV and the 5630
HV. The 5630HV operates at about 136lm/W. The company claims that it achieves
the world’s highest efficacy for an AC LED. The company optimized the
3030 HV package for micro bulbs like G9 and G4. The 5630 HV and 5250 HV type
packages have received LM80 certification, the U.S. reliability test standard
for LED lighting.
The AC direct modules are ideal for down lighting. The company's AC direct
LED modules provide light efficiency of 125lm/W, which the company claims is
the best performance in 23W category. The AC direct modules have a CRI above 80
with an optimized light pattern design for excellent light uniformity. AC
direct modules for down lighting avoid dark spots with a uniform light
distribution from a light source placed in the center. The modules also have
built-in connectors to the power source.
A surge protection circuit is embedded in the AC direct modules for bulbs.
The AC module for bulbs is ideal for lighting applications requiring size
optimization because it does not require auxiliary circuits and has a lower
cost than LED modules that do require one. The company plans to offer a 3030W
HV package optimized for omnidirectional bulbs as well as bulb modules and
surface modules later this year.
Toshiba Launches 1W GaN-on-Si White LEDs
LIGHTimes News Staff
September 11, 2014...Toshiba Electronics Europe of Düsseldorf, Germany (TEE) has added new gallium nitride on silicon GaN-on-Si LEDs to its LETERAS family of white LEDs. The new LEDs have a standard 3535 lens type package. Unlike most conventional LEDs produced on sapphire substrates, Toshiba says that it fabricates its GaN LEDs on 200 mm silicon wafers. The TL1L3 series of 1.0W LEDs have a package measure 3.5mm x 3.5mm and have a height (including the lens) of merely 2.42mm and offer typical luminous flux of 112-145 lumens, depending on the correlated color temperature (CCT).
Toshiba says that TL1L3 series LEDs are suitable for lamps, down lights, ceiling lights, tube lights, in addition to floodlights and street lights. The seven new members of the new TL1L3 LED series offer color temperatures ranging from 2700K to 6500K. Minimum colour rendering index (Ra) ratings of up to 80 contribute to natural-looking lighting across all target applications. Toshiba says that a low typical forward voltage (VF) of just 2.85V (at a forward current of 350mA) helps to keep power consumption to a minimum. TL1L3 LEDs are rated for operating temperatures between -40°C and 100°C and have a maximum power dissipation of 3.4W. They also offer a very low typical thermal resistance Rth(j-s) from LED junction to solderpoint of only 5°C/W, adds the firm.
Fraen Creates Optics with multi-TIR Nested Lenses for COB LEDs
LIGHTimes News Staff
September 9, 2014...Fraen Corporation of Reading, Massachusetts USA, has recently added
Multi-TIR Nested Lens Technology for COB LEDs to its offering of standard
optical products. The low profile, multi-TIR nested lens creates a narrow beam
when used with a range of Chip-On-Board (COB) LEDs. The patent pending
technology can significantly reduce the optic height compared to reflectors
with similar optical performance while providing maximum on-axis intensity with
According to Fraen, its patent pending nested TIR lens technology ideal for
COB LED applications, especially those requiring narrow beam patterns. Fraen
asserts that the compact design can produce an efficient well-collimated beam,
which standard TIRs and reflectors cannot achieve. The company claims that the
lens can reduce weight and the overall optic height as well as reducing cost.
In addition, Fraen notes that the new multi-TIR nested lens can reduce off-axis
glare and deliver higher center-beam candela per lumen.
Smples of the company's new technology are available now.
Samsung Creating New Ultra HD TV with 300 LEDs
September 9, 2014...Samsung Electronics is creating a new Ultra HD TV equipped with a 300 LED direct-type LED backlit unit, according to a Digitimes article, which cited supply chain sources. The new TV is reportedly expected to help compete against OLED TVs in the high-end TV market. Samsung hopes the TV will help meet expected demand for Ultra HD TVs in 2015.The company plans to enhance the resolution and color quality of the TV using increased LEDs, an improved color filter, and local dimming technology.
Daktronics to Provide New HD Video Displays at the Palace of Auburn Hills
LIGHTimes News Staff
September 9, 2014...The Palace of Auburn Hills, home of the Detroit Pistons, has gotten a new
high definition centerhung display system as well as ribbon and auxiliary
displays from Daktronics. Daktronics of Brookings, South Dakota, has partnered
with Palace Sports & Entertainment to provide the new display systems and
repurposed audio system for the 21,231-seat, multi-purpose arena in Auburn
Hills, Michigan. The display installation is the fourth stage of the facility's
three-year capital improvement plan.
"As a long-term partner of the Detroit Pistons and The Palace of Auburn
Hills, Daktronics is proud to be part of the vision of excellence and very
excited to be supplying the new HD video screens," said national sales
manager Will Ellerbruch."The Daktronics screens will supply a crystal clear
HD view of the game and enhance the entire game-day experience for Pistons
fans. Our control system will help immerse the fans with eye-popping video
along with the two 360-degree LED ribbon boards that will surround the fans
with unprecedented entertainment. We are very much looking forward to fall and
another great year of basketball."
The 56,000 pound custom-designed sound and video display system is scheduled
for completion by early November for the 2014-15 NBA season. The centerhung
features four convex high definition video displays along with two lower
sideline facing displays.
The rectangular centerhung system boasts two displays facing the sidelines
that each measure 24 feet high by 42 feet wide and feature 6 millimeter line
spacing. They provide 1080p HD imagery. Each of the two displays facing the
baseline measure 16 feet high by 27.5 feet wide and features 6 millimeter line
spacing to provide 720p HD imagery. The centerhung installation combines for
2,896 square feet of active display area.
Two additional video displays will be angled out from the bottom of the
centerhung setup to appeal to fans, players and coaches that are close to the
action and courtside. Each display will have 6 millimeter line spacing and will
measure about 8.5 feet high by 16 feet wide. These two displays will supplement
content shown from the main video displays.
"We are pleased to enhance the visual experience of sporting and
entertainment events at The Palace with the installation of a new high
definition video system," said Dennis Mannion, CEO of Palace Sports &
Entertainment. "Multi-million dollar renovations and technological upgrades
at The Palace support the vision of our owner Tom Gores and his commitment to
providing our fans with one of the most innovative, technologically advanced
facilities in the country."
The existing audio system will be repurposed and integrated with the video
and scoring system at The Palace. This system provides full-range sound
reproduction and delivers clear speech.
The installation also includes a fascia display measuring about 2.5 feet
high by 984 feet wide. Two end fascia displays measure about 6 feet high by 80
feet, and two ribbon displays measure about 3 feet high by 535 feet wide.
Thirty vomitory displays measuring 3.5 feet high by 4.5 feet wide are
throughout The Palace. All of the displays have 15 millimeter line spacing and
can be used to deliver statistics, additional game information, animations, and
The company will also include its Show Control system, a production
solution, which combines display control software, video processing, data
integration and playback hardware. The Show Control System can control all
video displays in the arena from a centralized control room.
Daktronics will also supply two Lapeer Road Palace marquees with 16
millimeter line spacing, each about 18.5 feet high by 25.5 feet wide. The
displays will include multiple levels of protection from the outdoor
Veeco Introduces EPIK700 MOCVD System for LED Production
LIGHTimes News Staff
September 4, 2014...Veeco Instruments Inc. of Plainview, New York USA, launched the new
TurboDisc® EPIK700™ Gallium Nitride (GaN) metal organic chemical vapor
deposition (MOCVD) system. The company boasts that the EPIK700 combines the
industry’s highest productivity and best-in-class yields with low cost of
operation. Veeco says that the EPIK700 system further enables lower
manufacturing costs for LEDs for general lighting applications. Veeco also
claims that the EPIK700 MOCVD system enables customers to achieve a cost per
wafer savings of up to 20 percent compared to previous generations.
According to Veeco, the savings results from improved wafer uniformity,
reduced operating expenses, and increased productivity. The EPIK700 system has
reactor with more than double the capacity of current generation reactors. The
increased volume and productivity advancements within the reactor result in a
2.5x throughput advantage over previous generation MOCVD systems.
The EPIK700 system is available in one-and two-reactor configurations and
features new technologies including the company's IsoFlange™ center
injection flow and TruHeat™ wafer coil that offer homogeneous laminar
flow and uniform temperature profile across the entire wafer carrier. EPIK700
accommodates 31x4”, 12x6” and 6x8” wafer carrier sizes. Veeco
asserts that customers can easily transfer processes from existing TurboDisc
systems to the new EPIK700 MOCVD platform for production of LEDs.
“The EPIK700 is our latest in a distinguished line of
technologically advanced MOCVD reactors,” said William J. Miller ,
Ph.D., executive vice president, Veeco. “We are pleased to say that
one of the world’s top LED manufacturers has thoroughly evaluated and
accepted the EPIK700 due to its production worthiness, stable process and
reproducible results. We anticipate that this new product will help our
customers further succeed in the solid-state lighting market, by driving down
LED manufacturing costs and increasing productivity.”
“The EPIK700 is another game-changer for the LED
industry,” said Jim Jenson , senior vice president and general
manager, Veeco MOCVD. “In addition to higher capacity and throughput,
the system contains proprietary technologies within the reactor that improve
wavelength uniformity and drive higher yields in a tighter bin. By combining
the advanced TurboDisc reactor design with excellent uniformity, higher
productivity, proven automation, low consumable costs and improved footprint
efficiency, we have significantly improved the cost per wafer for our
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