LEDs/Lighting
SV300 Series of Heat Sinks for LED Modules
Posted in Manufacturing & Prototyping, Electronics, Optics/Photonics, Electronic Components, Electronics, Medical, Lighting, LEDs, Products, MDB on
Wednesday, May 01 2013
Ohmite Manufacturing, Arlington
Heights, IL, introduces a new line of
heat sinks for single LED power modules.
The SV300 Series is composed of
high performance, low cost, scalable
heat sinks designed to accommodate a
single LED. Ideal for use with LEDs in
medical industry applications, these high aspect ratio devices are available
in two standard lengths, 14mm and 25mm, with a 9.9mm mounting
surface. Customizable options for this series include length, surface
finish, mounting holes, and custom machining.
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Wireless 4 Channel Light Logger
Posted in Manufacturing & Prototyping, Monitoring & Testing, Optics/Photonics, Electronics, Optics, Optical Components, Medical, Lighting, Products, MDB on
Wednesday, May 01 2013
TandD Corporation, Saratoga Springs, NY, has
introduced the RTR-574-H, a Wireless 4 Channel
Logger that monitors illuminance, ultraviolet, temperature,
and humidity, and achieves a temperature
measurement accuracy of ±0.3°C
(between 10° to 40°C) with an overall
range of -30° to 80°C. The humidity
measurement accuracy is ±2.5% (at
25°C, 10 to 85% RH) with an overall
range of 0 to 99% RH.
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Spectrally Tunable Lighting Source Enables Color Rendering Evaluation
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Posted in Lighting, Tech Briefs, LT on
Friday, March 01 2013
Experiments could aid development of accurate CRI for LED light sources.
Solid-state lighting (SSL) is increasingly being introduced into the market and it is expected that many of the light sources currently used for general illumination will be replaced by light-emitting diodes (LEDs) in the future. As the spectra of LED sources are dissimilar to traditional incandescent and discharge lamps, some of the existing standards and measurement methods are insufficient or deficient when applied to LEDs. For example, a new metric for color rendering of light sources is being developed to address the problems of the color rendering index (CRI) for LED light sources. Such studies require well-designed vision experiments.Read More >>
New MicroLEDs Achieve Ultra-High Light Intensity
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Posted in Lighting, Tech Briefs, LT on
Friday, March 01 2013
New technology combines the benefits of a LED and a laser.
InfiniLED’s latest MicroLEDs (μLEDs) have produced record optical beam intensity. This new device is capable of producing up to 1mW of light from a single 20μm pixel at 405nm. This is equivalent to a light output density of more than 300 W/cm2 — the high cm2 est recorded for a commercially available LED type device.Read More >>
Chips That Can Steer Light
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Posted in Lighting, Tech Briefs, LT on
Friday, March 01 2013
Record-setting “optical phased arrays” could lead to better laser rangefinders, smaller medical-imaging devices and even holographic TVs.
If you want to create a moving light source, you have a few possibilities. One is to mount a light emitter in some kind of mechanical housing — the approach used in, for example, theatrical spotlights, which stage hands swivel and tilt to track performers. Another possibility, however, is to create an array of light emitters and vary their “phase” — the alignment of the light waves they produce. The out-of-phase light waves interfere with one another, reinforcing each other in some directions but annihilating each other in others. The result is a light source that doesn’t move, but can project a beam in any direction.Read More >>
Designing LED Lighting for Commercial Applications
Posted in Lighting, Features, LT on
Friday, March 01 2013
As specifiers and end users began moving away from
incandescent lighting three decades ago, they started
utilizing high intensity discharge (HID) and compact
fluorescent (CFL) lamps and fixtures for most commercial
lighting applications. The inherent characteristics of
these light sources prevents them from generating effective
lighting in the desired areas, which creates wasted energy due
to much of the light getting trapped inside the fixture.
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Efficient Thermal Simulation for Advanced LED Designs
Posted in Lighting, Features, LT on
Friday, March 01 2013
A successful LED system design must be able to transfer
the active device’s heat efficiently from its own
PN junction to the ambient. This path includes the
printed circuit board on which the LED is mounted
and the enclosure and/or heatsink. The designer must confirm
that housings and shrouds participate efficiently in
maintaining a good operating temperature.
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Scientists Invent New Material for Warm-White LEDs
Posted in Lighting, News, Features, LT on
Friday, March 01 2013
Light emitting diodes (LEDs)
are known for their energy
efficiency and durability, but
the bluish, cold light of current
white LEDs has precluded
their widespread use for indoor
lighting. Now, University
of Georgia scientists have
fabricated what is thought to
be the world's first LED that
emits warm white light using
a single light emitting material,
or phosphor, with a single
emitting center for illumination.
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Researchers Identify Links Between Visibility and Safety From Roadway Lighting
Posted in Lighting, News, Features, LT on
Friday, March 01 2013
Newspapers are filled with stories describing reductions
and removal of street lighting in order to reduce municipal
costs. Tackling the tricky questions of when and where to
install roadway illumination is a challenge for transportation
agencies.
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JetBlue Airways Hangar and Training Center Get New High Output CFL Lamps
Posted in Lighting, Applications, LT on
Friday, March 01 2013
To provide significant energy savings with optimal lighting
quality, JetBlue Airways recently selected MaxLite’s High-
Max® High Output compact fluorescent (CFL) lamps for a series
of retrofit projects in its Orlando-based hangar and training
center. With maintained lumens and crisp color rendering
throughout the bulbs’ long 10,000-hour lifetime, MaxLite’s
HighMax CFLs were a good match for JetBlue’s retrofit highwattage
applications. The self-ballasted lamps are constructed
with a large, solid aluminum heat sink for cool operation and
high-heat fluorescent U-bend tubes for optimized strength
and longevity. The higher wattage
models have an on-board internal
cooling fan that helps maintain
lumen output, color rendering, and
reduced wattage consumption.
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Marriott Headquarters Implements Campus-Wide Lighting Upgrade
Posted in Lighting, Applications, LT on
Friday, March 01 2013
GE Lighting LED solutions were recently installed in several
locations at Marriott International’s headquarters located
in Bethesda, Md. The installations have enriched lighting
quality, heightened employee security and improved
energy efficiency. Following its corporate campus-wide lighting
update, Marriott will use 860,000 fewer kilowatt hours
(kWhs) of electricity and save more than $120,000 in combined
energy and maintenance costs a year.
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LED Landing Light Is Impervious to Shock and Vibration
Posted in Lighting, Applications, LT on
Friday, March 01 2013
Hoffman Performance Lighting has introduced the firstever
PAR64 LED Landing Light, a drop-in replacement
for existing Q4559 and Q4559X quartz halogen lamps. The
ruggedized PAR64 can be used on a wide range of commercial,
civil, law enforcement, aero-medical, and military aircraft.
With FAA approval pending, this new landing light
technology meets or exceeds all FAA and MIL specifications
and is fully qualified to RTCA DO160, MILSTD-
810, MIL-STD-461, and other requirements
for both fixed-wing and rotor-craft applications.
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Top View LEDs
Posted in Lighting, Products, LT on
Friday, March 01 2013
Everlight Electronics (Carrollton,
TX) has introduced a new highly efficient
white mid-power LED series
62-227B (0.4W) and 62-217B (0.5W).
These top view LEDs (5630 package)
provide high efficacy, high CRI (min.
80 or min. 75), low power consumption,
a high luminous flux output, high current capability, a wide
viewing angle, and a compact form factor. The design of
Everlight’s 0.5W 62-217B LED provides a high lumen, high
quality light solution for mid-power applications . Measuring
5.6mm × 3.0mm × 0.9mm (LxWxH), the 62-217B Mid-Power
LED is available in 13 versions in warm white (2700-3000K),
neutral white (4000K), and cold white (5700-6500K) with typical
luminous fluxes ranging from 40lm to 60lm.
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LED-Driver Reference Designs
Posted in Lighting, Products, LT on
Friday, March 01 2013
Power Integrations (San Jose, CA) recently announced two
new reference designs describing high-efficiency, non-isolated,
high-power-factor (PF) LED drivers for T8 tubes. The designs feature
low component count and leverage simple magnetics and
single-sided boards yielding power densities of 14.2 W/in³.
Based on the LNK460KG LED driver from Power Integrations’
LinkSwitch-PL family of ICs, the circuits detailed in DER-337
(high-line) and DER-345 (low-line) use single-stage non-isolated
topologies which result in a profile of only 8 mm - small enough
to be mounted behind the LEDs in the T8 tube.
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LED Chains
Posted in Lighting, Products, LT on
Friday, March 01 2013
Universal’s (Nashville, TN) new family
of Signa® LED chains makes it simple
to design signage with high lumens, consistent
color, superior reliability, and an
installer-friendly module fastening system.
Offering high-efficiency 80- and 100-lumens-perfoot
options, these new LED chains allow you to maximize
the number of feet of letter channeling per single 60W power
supply while still providing high lumen performance. Universal
also offers 60W 12-volt Class 2 LED drivers to power these
LEDs in a variety of applications. The RoHS-compliant LED
chain also features a wide operation temperature range of
-40°C to +60°C.
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RGB Pixel Control Lighting
Posted in Lighting, Products, LT on
Friday, March 01 2013
EnvironmentalLights.com (San
Diego, CA) recently launched a new
family of individually addressable
RGB LED pixel lighting called Pixel-
Pro LED lighting that combines the
ability to produce millions of colors
with the technology needed to
achieve individual pixel control.
PixelPro LED modules combine
RGB LEDs with an intelligent
WS2801 integrated circuit (IC) chip to produce eye-catching
animated effects. With one IC chip per module, and one IC
chip per LED on the strip lights, the performance and control
of the modules is unprecedented. The modules come in a
choice of 5 configurations: square, bullet, circular, dome, or
strip. They also come in waterproof or non-waterproof configurations.
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LED Drivers with Triac Dimming
Posted in Lighting, Products, LT on
Friday, March 01 2013
Aimtec (Vaudreuil-Dorion, Canada) recently introduced
its AMEPR30D-5070AZ-220 AC/DC LED driver with triac dimming.
Available in constant output currents ranging from 0.2
to 2.0A, the AMEPR10D-AZ (10 watt), AMEPR15D-AZ (15
watt), and AMEPR30D-AZ (30 watt) drivers come in one of
the industry’s smallest form factors of 133mm x 33mm x
30mm in an IP20 or IP67 rated case for easy integration into
a multitude of indoor and outdoor applications.
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LED Power Supplies
Posted in Lighting, Products, LT on
Friday, March 01 2013
Green Watt Power (Concord, CA), a division of Calex Mfg.
Co., has announced CSA/UL agency approvals on the Green
Watt Power offering of LED Constant
Current power supplies. The
GLC Series offers solutions from
18 Watts to 150 Watts. All GLC
models are enclosed to IP67 standards
and well suited for virtually
all LED lighting applications including
indoor, outdoor, signage, and thermally harsh and
damp environments. All models have a universal AC input
and are agency approved to 277 VAC. Agency approvals include
UL/CSA 8750 and 1310 class 2 or 1. All GLC models
feature over voltage, over current, over temperature protection
and are RoHS compliant. All models are designed and
built for consistent performance and high reliability and
come with a Five Year Warranty.
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375W Constant Current Power Supply
Posted in Lighting, Products, LT on
Friday, March 01 2013
N2Power (Simi Valley, CA) a division of Qualstar Corporation,
has announced constant current versions of its 375W
AC-DC power supply dubbed XL375LED. The new units are
designed to drive strings of LEDs in high power lamps for industrial,
entertainment and outdoor lighting requirements.
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1.5A DC/DC Buck Converter
Posted in Lighting, Products, LT on
Friday, March 01 2013
Texas Instruments Incorporated (TI) (Dallas, TX) recently
introduced a 1.5A constant current DC/DC buck converter
with a combination of frequency synchronization, pulsewidth
modulation (PWM) dimming and thermal foldback.
The TPS92510 features a wide 3.5V to 60V input voltage
operating range and integrated MOSFET. Together with TI's
WEBENCH® LED Architect, the lighting developer can
quickly design a power management circuit to drive a
string of up to 17 high-brightness
LEDs at up to 97-percent
power efficiency in automotive,
industrial and general illumination
applications.
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Flickerless LED Drivers
Posted in Lighting, Products, LT on
Friday, March 01 2013
iWatt (Campbell, CA) has launched its iW3616 (12W) and
iW3617 (25W) LED driver ICs based on the company’s thirdgeneration
digital AC/DC SSL (solid state lighting) LED driver
platform. The drivers are designed for 120V/230VAC offline LED
lighting bulbs and fixtures.
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Continuous-Dimming LED Drivers
Posted in Lighting, Products, LT on
Friday, March 01 2013
O2Micro International Limited (Santa
Clara, CA) recently extended the company's
Free Dimming™ technology and
lighting product portfolio with the introduction
of the OZ8024 and OZ8024R LED
Driver Controllers. Free Dimming technology
enables LED bulbs to dim using
any on/off switch, thus eliminating cost, installation and
compatibility issues associated with traditional incandescent
dimmers. O2Micro’s patented Free Dimming technology
works with any on/off switch, including wall toggles, paddle
switches, pull cords, rotary switches and other types of on/off
switches commonly found on walls, extension cords and
table/desk lamps.
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LED Planar Modules
Posted in Lighting, Products, LT on
Friday, March 01 2013
Planar lighting pioneer Oree (Ramat Gan, Israel)recently
unveiled the LightCell™ Plus to give lighting fixture manufacturers
more options for developing innovative LED-based
planar light fixtures. LightCell Plus is geared to general lighting
segments including offices, retail, hospitality and residential
lighting.
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Epoxy Based UV Curable System
Posted in Lighting, Products, LT on
Friday, March 01 2013
Master Bond UV15 (Hackensack, NJ) is widely used for a variety
of bonding, coating and sealing applications in the optical,
electronic and optoelectronic industries. This epoxy
based UV curable system is 100% reactive and does not contain
any solvents or other volatiles. It is also completely free
of any oxygen inhibition.
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Constant Current Regulators
Posted in Lighting, Products, LT on
Friday, March 01 2013
ON Semiconductor (Phoenix, AZ) has introduced the new
NSIC20xx series of linear constant current regulators (CCR)
designed for use in solid state lighting systems. The new
NSIC20XX series of CCRs offer a maximum voltage rating of
120 Volts, 3 Watts, and are capable of withstanding the high
peak voltages of alternating current
off-line HBLED lighting applications,
including digital signage systems,
lighting panels and decorative
illumination. These new CCRs
protect against the sudden surges
that are commonplace in such
lighting applications. Based on selfbiased
transistor (SBT) technology,
the NSIC20XX series of devices are
capable of current regulation over a very wide voltage range,
while their negative temperature coefficient helps to protect
the LEDs from thermal runaway at extreme voltage and current
levels.
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