Lighting & Illumination

June 2019
Boost Converter Powers High Current LEDs

A 32 V, 2 A LT3762 boost LED driver.

    High power LEDs continue to proliferate in modern lighting systems, spanning automotive headlights, industrial/commercial signage, architectural lighting, and a variety of consumer electronics applications. The industry’s transition toward LED technology
. . . Read More
Date:
06/25/2019
Explaining Visible Light from 2D Lead Halide Perovskites

Jiming Bao, associate professor of electrical and computer engineering at the University of Houston, led an international group of researchers investigating how a two-dimensional perovskite composed of cesium, lead and bromine was able to emit a strong green light.

Researchers drew attention three years ago when they reported that a two-dimensional perovskite - a material with a specific crystal structure - composed of cesium, lead and bromine emitted a strong green light. Crystals that produce light on the green spectrum are desirable because green light, while valuable
. . . Read More
Date:
06/25/2019
Trapping Light Particles to Develop Quantum Computers
NEW YORK -- Quantum computers, which use light particles (photons) instead of electrons to transmit and process data, hold the promise of a new era of research in which the time needed to realize lifesaving drugs and new technologies will be significantly shortened. Photons are promising candidates for quantum
. . . Read More
Date:
06/25/2019

Laird Thermal Systems Expands SuperCool Series
Laird Thermal Systems has expanded its SuperCool Series product offering with the development of three high performance ultra-compact Peltier Cooler assemblies. The space-saving SuperCool Series is designed for applications that require high cooling capacities in tight space constraints such
. . . Read More
Date:
06/24/2019
Clean Energy Through Photocatalyst Optimization

(a) Product of microwave photoconductivity intensity and its lifetime of oxyhalide photocatalyt 2 vs calcination temperature. The microwave measurements suggest the optimal temperature of 600 ? that is 100 ? lower than the reported one. (b) O2-evolution rate of oxyhalide photocatalyt 2 prepared by different calcination temperature.

Osaka, Japan - Photocatalysts that harness light energy and use it to split water into hydrogen and oxygen attract significant scholarly attention, owing to the appeal of hydrogen as a potential clean energy source. However, the optimization of photocatalyst candidate materials usually requires a considerable
. . . Read More
Date:
06/18/2019
Commercial FLA Series Dimming Receptacles
Amphenol Commercial Products FLA Series Dimming Receptacles are designed with power and dimming/signal contacts to provide a connection between dimmable photocell and the luminaire for commercial and utility lighting. The locking type receptacles are compliant with ANSI C136-10 and can be used for lighting applications
. . . Read More
Date:
06/18/2019
Constant Intensity Indicator Series for Rugged Applications
Dialight announced the launch of its new 556 Series Constant Intensity Panel Mount Indicators, the company's first constant intensity product designed for rugged, outdoor applications. Combining InGaN and AlInGaP technologies, the 556 Series delivers maximum light output in a highly durable package designed
. . . Read More
Date:
06/17/2019
3W Ultra-thin Isolated Regulated Output DC/DC Converters
The new series URB/VRB-J(M)D/T-3W provides 4:1 and 2:1 ultra wide input range, features 1500VDC isolation voltage, and delivers efficiencies up to 83%. Packages are available in SMD and DIP. In addition to meeting EN62368
. . . Read More
Date:
06/17/2019
Fuji Electric 7th Generation IGBT Technology Powers Today’s High Efficiency Energy Conversion Systems

Click image to enlarge

Figure 1: IGBT cross sectional structure

Today’s Power Electronic market is driving development of compact, low-loss, and, high-reliability IGBT modules to optimize power conversion systems. In response, Fuji Electric has developed our 7th generation X-Series IGBT technology combining enhanced semiconductor chip characteristics and improved
. . . Read More
Date:
06/16/2019
Environmental Lights' Tunable White Backlighting Solution
SAN DIEGO -- Environmental Lights announced the launch of LumenMax Tunable White LED Light Sheets. LumenMax Tunable White LED Light Sheets from Environmental Lights are ideal for backlighting shallow light boxes with tunable white lighting. They feature 18 x 9 cut segments that each contain a
. . . Read More
Date:
06/14/2019
Single-Layer MOVs Offer Superior Overvoltage Protection
RALEIGH, NC – The RV from Stackpole is a radial-leaded metal oxide varistor available in a wide range of disk sizes and working voltages designed for general-purpose overvoltage protection. The UL 1449 certified RV series offers disk sizes from 5mm to 20mm with peak current ratings up to
. . . Read More
Date:
06/14/2019
PSDcast â€

Seoul Semiconductor’s Mark McClear

Most of us intuitively feel that natural sunlight is better than artificial light, whatever the color temperature. And the science backs it up. But today, we’re focusing on the aesthetic qualities, and just last month, Seoul Semiconductor 
. . . Read More
Date:
06/14/2019
Laser Trick Produces High-Energy Terahertz Pulses

From the color difference of two slightly delayed laser flashes (left) a non-linear crystal generates an energetic terahertz pulse (right).

A team of scientists from DESY and the University of Hamburg has achieved an important milestone in the quest for a new type of compact particle accelerator. Using ultra-powerful pulses of laser light, they were able to produce particularly high-energy flashes of radiation in the terahertz range having a sharply
. . . Read More
Date:
06/13/2019
PSDcast â€

Dr. Juanita Kurtin, Director of Materials Research at OSRAM Opto Semiconductors

Date:
06/13/2019
Rectifiers Increase Power Density, Improve Efficiency
MALVERN, Pa. — Vishay Intertechnology, Inc. expanded its offering of FRED Pt Ultrafast recovery rectifiers with eight new 100 V and 200 V devices in the eSMP series SMP (DO-220AA) package, including the industry's first
. . . Read More
Date:
06/12/2019
Expanded Patent Portfolio for Smart Lighting IoT Solutions
BEDFORD, Mass. -- CIMCON announced the United States Patent and Trademark Office has awarded the company patent No. 10,238,001 for the NearSky smart city platform. The newly issued patent for a
. . . Read More
Date:
06/12/2019
Lighting Packages Intended for Outdoor Horse Arenas
WORCESTER, Mass -- Access Fixtures has introduced 
. . . Read More
Date:
06/12/2019
A Clean and Convenient way to Oxidize Plastic Surfaces

Spot staining after treatment with rhodamine as a red ink after site-selective photooxygenation. Spot emission under black-light irradiation.

Osaka, Japan - Polypropylene (PP) is everywhere, being one of the most widely used plastics in human life. A versatile material, its naturally inert surface can be modified for specific applications. Researchers at Osaka University have now developed a convenient light-driven process for oxidizing PP without
. . . Read More
Date:
06/11/2019
Tiny Light Box Opens New Doors into the Nanoworld

Using a box built from stacked atomically thin layers of the material tungsten disulphide (see the atomic model), Chalmers researchers have succeeded in creating a type of feedback loop in which light and matter become one. This new concept involves two distinct processes being housed in the same nanodisk. The box has a diameter of only 100 nanometres (0.00001 centimetres) and opens the way to new fundamental research and more compact solutions in nanophotonics.

Researchers at Chalmers University of Technology, Sweden, have discovered a completely new way of capturing, amplifying and linking light to matter at the nanolevel. Using a tiny box, built from stacked atomically thin material, they have succeeded in creating a type of feedback loop in which light and matter
. . . Read More
Date:
06/11/2019
LED Drivers Feature Efficiencies up to 94.5%
MEAN WELL XLG LED Drivers are economical drivers with a compact size and high efficiency (up to 94.5%). The drivers are available in 3-in-1 dimming (dim-to-off) and adjustable output via potentiometer functionality variants. These LED drivers are manufactured on a metal housing design equipped with a functional
. . . Read More
Date:
06/07/2019
10W reed relay suits high-PCB-density applications
Series 122 relays measure 12.5mm in height and are rated with a switching current of 0.5A at 10W. 3V and 5V coils are available.   Fast operate
. . . Read More
Date:
06/06/2019
Now at Mouser: Maxim’s MAX77860 Switch-Mode Buck Charger
The MAX77860 is ideal for USB Type-C charging for single-cell (1S) lithium-ion or lithium-polymer applications, portable medical equipment, portable industrial equipment, and mobile point-of-sale devices, as well as smartphones and Internet of Things (IoT) applications.
. . . Read More
Date:
06/06/2019
New angled locking cable for IEC C14 Power Connectors
The newest connector in the IL13 family sets a benchmark in space limited locking situations. Due to its angled construction the connector can be beneficially used with devices standing next to a wall or in
. . . Read More
Date:
06/06/2019
Powerbox announces 105 models of DC/DC converters featuring 2xMOPP medical approvals
The PMM15, PMM20 and PMM30 are certified to the 3rd Edition of the IEC/EN/ANSI/AAMI ES 60601-1 medical safety standard and rated for the highest levels of patient protection - 2xMOPP. With a clearance and creepage distance of 8mm, a typical leakage current of 2µA
. . . Read More
Date:
06/06/2019
Encapsulated sixteenth-brick DC-DC converters
The modules are housed in the industry-standard sixteenth-brick form factor (35.3 x 25 x 10.4mm / 1.39 x 0.984 x 0.41 in), with sealed and encapsulated packaging. This ensures their reliability when exposed to dust, moisture, severe vibration and other harsh environmental
. . . Read More
Date:
06/06/2019
Rad-Hard 16-Channel Current Driver with Integrated Decoder
The ISL72814SEH integrates the decoder, input level shifter, and 16 current driver arrays in a single monolithic IC. The device allows satellite manufacturers to significantly increase system capacity and cut solution footprint by 50 percent for their medium Earth
. . . Read More
Date:
06/06/2019
HARTING and HIROSE push infrastructure for Single Pair Ethernet
To make the new connection technology for Single Pair Ethernet a success, the technology partnership is pursuing the systematic expansion of SPE to achieve an end-to-end, complete infrastructure. This infrastructure consists of a portfolio of connectors, sockets,
. . . Read More
Date:
06/06/2019
Wireless Power with Infrared Light

Power is delivered with pinpoint accuracy using an invisible beam of light. Users do not see or feel the beam.

By the time you read this, Lightfair should be in the books, and to that end, I’d like to highlight one of the coolest opto items I’ve seen in a while – wireless power with infrared
. . . Read More
Date:
06/06/2019
PSDcast â€

White light visibility using Twister

In this episode of the PSDcast, we’re discussing LED no-UV lighting. In our May issue, we published an article with the apt title “
. . . Read More
Date:
06/06/2019
Accurate Probing of Magnetism with Light

Measured and calculated dichroic absorptive part of the magneto-optical function of Cobalt. Including local field effects (LFE) and many-body corrections brings the fully ab-initio theory into very good agreement with experiment.

Probing magnetic materials with extreme ultraviolet radiation allows to obtain a detailed microscopic picture of how magnetic systems interact with light - the fastest way to manipulate a magnetic material. A team of researchers led by the Max Born Institute has now provided the experimental and theoretical
. . . Read More
Date:
06/03/2019
Visible-Light Molecular Switch with 100 nm Band Separation

This is an illustration depicting how ITI is switched between states.

A consortium of scientists from the Medical Imaging Center (University Medical Center Groningen), Van 't Hoff Institute for Molecular Sciences (University of Amsterdam), Palacky University in Olomouc, the University of Nantes, Stratingh Institute for Chemistry (University of Groningen) and the European Laboratory
. . . Read More
Date:
06/03/2019