2016-11-11

The Sweet Slumber Challenge for Soldiers on Military Deployment

Dr. David Bacon shares in this Lighting Science blog entry how soldiers deployed on missions might find sweet sleep difficult during assignments.
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2016-11-09

Fraunhofer Institute Showcases Glasses Made of Micro-OLED Displays

Data glasses mirror information to the eye without interfering with the wearer‘s vision. However, the battery runs down quickly, because the electronics consume a great amount of electricity while playing back the images. Fraunhofer researchers have developed an energy-saving display that reduces the power consumption to a fraction. The new display will be presented at the electronica trade fair in Munich from Nov. 08-11, 2016.
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2016-11-04

UCSB Finds Metal Impurities in Metal Recombination Centers Affect LED Efficiency

Using cutting-edge first-principles calculations, researchers at the University of California, Santa Barbara (UCSB) have demonstrated the mechanism by which transition metal impurities - iron in particular - can act as nonradiative recombination centers in nitride semiconductors. The work highlights that such impurities can have a detrimental impact on the efficiency of light-emitting diodes (LEDs) based on gallium nitride or indium gallium nitride.
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2016-11-03

How Lighting Affects Ground Beef Appeal in Grocery Stores

Taking Stock Contributor Samantha Kneeskern covers in this article how different lighting can make ground beef appear more appealing or dull. 
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2016-10-27

ITRI Unveils R&D Achievements in PCB Smart Manufacturing at the TPCA Show 2016

Smart manufacturing will be the key to upgrading the printed circuit board industry! ITRI exhibited its expertise in innovative PCB manufacturing technology at the TPCA Show 2016, displaying the High Aspect Ratio Maskless Fine Line Printing Technology and Additive Process for Printed Fine Line Circuits, as well as its Intelligent Power Module for Automotive Battery Control. ITRI's innovative technology will assist in propelling the value of both the upstream and downstream sectors of Taiwan's PCB industry, thereby solidifying the foundation in making the industry a trillion dollar one in the future.  
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2016-10-26

Designing 24W Power Supply for Automotive LED Lighting Systems

Martin Moss, the automotive marketing manager at Texas Instruments shares in this blog post how to create a 24W power supply for automotive LED lighting systems.
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2016-10-18

Decoding Micro-LED’s Current Driving Methods

Micro-LED a light emitting diode driven by electric currents, similar to traditional LEDs in display applications it can be driven using passive matrix or active matrix. A third current driving method is the new semi-active matrix driver, which uses a completely different method compared to existing models. Below we will introduce three different circuit designs and their basic theories.
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2016-10-11

Fraunhofer HHI and Partners Develop Plastic Based Photonic Chips for Various Applications

"Great in Optics –Small in Size!" The growing core of the “PolyPhoton- ics” Innovation Initiative will take this motto to the global communica- tions market. The project is part of the “Regional Enterprise Initiative”of the German Federal Ministry of Research. The consortium develops the value chain for the creation of a new technology platform. The Fraunho- fer Heinrich Hertz Institute HHI coordinates the project.
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2016-10-05

Dartmouth Researchers Develop VLC System that Can Transmit Data in the Dark

With the rise in wearables such as smartwatches and fitness trackers that rely on smart sensors, and the continued popularity of smartphones, smart devices are taking our country by storm. Wireless data for such devices is typically beamed through Wi-Fi or Bluetooth, yet, the new wireless communication technology of "visible light communication (VLC)," has emerged as a new option albeit with limitations due to the challenges it faces in practice, such as being easily blocked or not being able to sustain transmission when light is off. Through a new Dartmouth project called "DarkLight," researchers have developed and demonstrated for the first-time, how visible light can be used to transmit data even when the light appears dark or off. DarkLight provides a new communication primitive similar to infrared communication, however, it exploits the LED lights already around us rather than needing additional infrared emitters.
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2016-09-29

Single Photon LEDs for On-Chip Integration

​Researchers from the Graphene Flagship use layered materials to create an all-electrical quantum light emitting diodes (LED) with single-photon emission. These LEDs have potential as on-chip photon sources in quantum information applications.
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2016-09-29

Researchers Find New Form of Light

Glow-in-the-dark stickers, weird deep-sea fish, LED lightbulbs — all have forms of luminescence. In other words, instead of just reflecting light, they make their own
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2016-09-26

Holst Center Releases OLED on Ceramic Substrate

Dutch R&D institute Holst Centre (set up by imec and TNO) and American ultra-thin ceramics supplier ENrG Inc. have created the first ever ceramic-based, large-area flexible OLED. The device, manufactured on the 20-40 µm thick Thin E-Strate® ceramic substrate, promises a lifetime in excess of 10 years without the formation of blackspots. The ceramic carrier is also easy to handle and capable of withstanding the high temperatures used in display backplane manufacturing and standard sintering processes.
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2016-09-13

Scientists Develop Invisibility Cloak With Photonic Crystals

Almost as elusive as unicorns, finding practical materials for invisibility cloaking is challenging. Michigan Technological University researchers have new ideas how to solve that.
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2016-09-12

TI Releases High Efficiency Tunable White LED DC-Driver with Bluetooth Connectivity Reference Design

The TIDA-01096 TI design is a tested DC-DC LED driver sub system for tunable white LED luminaires. It is built-on a wireless SoC platform which can enable intensity adjustment (dimming) and co-related color temperature (CCT) control using any BLE smart device. Tunable white light luminaires simulate daylight conditions. With a separate warm-white and cold-white LED string, it allows CCT tuning and thereby helps achieving proper circadian stimulation. TI design TIDA-01096 provides high efficiency DC-DC conversion and allows dimming and color temperature control over more than 1:50 and 1:500 range using analog and PWM methods.
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2016-09-08

New Perovskite Research Findings Could Advance Solar Cell and LED Technology

“Promising” and “remarkable” are two words U.S. Department of Energy’s Ames Laboratory scientist Javier Vela uses to describe recent research results on organolead mixed-halide perovskites.
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2016-09-05

How to Turn Green Light Blue

The upconversion of photons allows for a more efficient use of light: Two photons are converted into a single photon having higher energy. Researchers at KIT now showed for the first time that the inner interfaces between surface-mounted metal-organic frameworks (SURMOFs) are suited perfectly for this purpose - they turned green light blue. The result, which is now being published in the Advanced Materialsjournal, opens up new opportunities for optoelectronic applications such as solar cells or LEDs. (DOI: 10.1002/adma.201601718)
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2016-09-01

Scientists Find Light Can Exist in a New Form

New research suggests that it is possible to create a new form of light by binding light to a single electron, combining the properties of both.
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2016-08-26

Fraunhofer Institute Tests OLEDs for Light Therapy

Cytocompatibility studies of organic light-emitting diodes (OLEDs) have been carried out on cell cultures for the first time at the Fraunhofer FEP to test how well OLEDs are tolerated by cells. The results offer promising prospects for the use of OLEDs in the medical field, such as in light therapy. The findings will be published in a white paper entitled “Preliminary cytocompatibility studies for encapsulated OLEDs” and likewise be presented at the 4th Industry Partners Day of the Fraunhofer FEP in Dresden on Sept. 28, 2016.
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2016-08-15

KAUST Laser-based Li-Fi Reaches 2GB Data Speed Transmission Milestone

While Wi-Fi and Bluetooth are now well established technologies, there are several advantages gained by shortening the wavelength of the electromagnetic waves used for transmitting information.
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2016-08-10

Are "Plug and Play" Control-integrated Luminaires Ready for Prime Time?

In a large open office on the fourth floor of the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute, lighting scientist Leora Radetsky lifts the blinds and lets in the sunlight. The overhead LED luminaires dim in response, fluidly, maintaining consistent light levels on the desk spaces. She lowers the blinds and the luminaires instantaneously increase light levels in response.
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2016-08-10

Osram Participates in Research for Finding New Rare-earth-reduced White LEDs

Rare-earth metals, which are needed for dyes and phosphor converters in light emitting diodes, are a finite resource. Osram Opto Semiconductors, as one of four partners in the “ORCA” project, is therefore researching and developing new types of organic dyes and inorganic phosphor converters. The aim of this project, which began on May, 2016, is to reduce the volume of these materials by developing new solutions, and to encourage the implementation of these solutions in actual production.
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2016-08-09

Liquid Light Switch Enables More Powerful Electronics

Researchers have built a miniature electro-optical switch which can change the spin -- or angular momentum -- of a liquid form of light by applying electric fields to a semiconductor device a millionth of a meter in size. Their results, reported in the journal Nature Materials, demonstrate how to bridge the gap between light and electricity, which could enable the development of ever faster and smaller electronics.
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2016-08-04

LEDs Fuel Ultra-accurate Indoor GPS System

An indoor positioning system that uses LED lighting to pinpoint location is being developed for use in the retail industry.
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2016-08-01

Researchers Make Green LEDs Brighter and More Efficient

Researchers at the University of Illinois at Urbana Champaign have developed a new method for making brighter and more efficient green light-emitting diodes (LEDs). Using an industry-standard semiconductor growth technique, they have created gallium nitride (GaN) cubic crystals grown on a silicon substrate that are capable of producing powerful green light for advanced solid-state lighting.
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2016-08-01

CLTC Research Addresses Integrated Building Control Systems

California Lighting Technology Center (CLTC) of UC Davis is developing an integrated building control system for existing commercial buildings. To date, few research efforts have accounted for the interdependence of lighting, fenestration and HVAC systems and the consideration of HVAC status in an integrated approach to optimize whole building energy-efficiency via a single, unified control platform. 
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2016-07-28

Bridgelux:Seeing Ourselves in New Light

Gina Balestin, Senior Corporate Marketing Manager at Bridgelux, shares in this blog entry the importance of LED color temperature.
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2016-07-26

Samsung OLED Displays Enhances Wearables

As the post-mobile era takes shape, we are beginning to see smart calling and imaging devices increasingly interconnected and even remotely controlled. The list of connected devices continues to grow – including everything from smartphones, wearable devices and information-focused consumer electronics, to electronics that are embracing the Internet of Things like smart home appliances and security monitoring systems.
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2016-07-25

University of Utah Engineer Receives Top Research Award for Work in LEDs

University of Utah Distinguished Professor Gerald Stringfellow, a former dean of the university's College of Engineering and a pioneer in LED technology, has been awarded a top research prize for his career-long work in the process for making light-emitting diodes, an important milestone for LED TVs, cellphone screens, high-efficiency solar cells, computer monitors and a new wave of LED light bulbs.
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2016-07-22

Researchers Develop Precise Silica Coating for QD Nanorods

Materials researchers at North Carolina State University have fine-tuned a technique that enables them to apply precisely controlled silica coatings to quantum dot nanorods in a day – up to 21 times faster than previous methods. In addition to saving time, the advance means the quantum dots are less likely to degrade, preserving their advantageous optical properties.
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2016-07-20

Australian Researchers Dope Nanolasers to Improve Efficiency

Scientists at ANU have improved the performance of tiny lasers by adding impurities, in a discovery which will be central to the development of low-cost biomedical sensors, quantum computing, and a faster internet.
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Lumileds introduced the LUXEON MX, a multi-die emitter that delivers industry leading efficiency and flux for outdoor fixtures and high bay lighting applications. Lighting fixtures benefit from the emitter’s 1,200 lumen, 150 lm/W ef... READ MORE

The trading portfolio of IMM Photonics has been expanded in the segment Fabry-Perot laser diodes to include a 830 nanometer (nm) version by the Japanese manufacturer QD-Laser.

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