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Lighting & Illumination

December 2019
Lasers Learn to Accurately Spot Space Junk

Beijing Fangshan Satellite Laser Observatory.

Chinese researchers have improved the accuracy in detecting space junk in earth's orbit, providing a more effective way to plot safe routes for spacecraft maneuvers. "The possibility of successfully navigating an asteroid field is approximately 3,720 to one!" exclaimed C-3PO as Han Solo directed t
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Date:
12/26/2019
Space-Time Metasurface Makes Light Reflect in one Direction

An illustration showing the concept of a space-time phase modulated metasurface consisting of resonating dielectric nanoantennas operating in reflection mode.

Light propagation is usually reciprocal meaning that the trajectory of light travelling in one direction is identical from that in the opposite direction. Breaking reciprocity can make light propagate only in one direction. Optical components that support such unidirectional flow of light, for example isolators an
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Date:
12/23/2019
Natural Spectrum LEDs Picked for Circadian LED Systems
Seoul Semiconductor Co., Ltd. announced that its SunLike Series natural spectrum LEDs, which implement light that closely matches the spectrum of sunlight, has been selected by WalaLight for its Healthy Circadian LED Lighting System, designed as a passive adaptive LED lighting system that delivers the appropriate sp
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Date:
12/20/2019

A New Way to Optimize Light Exposure Can Reduce Jet Lag
Whether you’re traveling for work or for fun, nothing ruins the start of a trip quite like jet lag. Engineers affiliated with the Lighting Enabled Systems & Applications (LESA) Center at Rensselaer Polytechnic Institute have developed a way to deliver personalized advice using smart wearable technology th
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Date:
12/19/2019
Automotive-Compliant Buck LED Drivers for LED Lamps
Diodes Incorporated announced the AL8843Q and AL8862Q automotive-compliant DC-DC buck converters, designed for driving single LEDs and multiple LED strings in and around vehicles. Applications include daytime running lights (DRL), which many manufacturers now offer as standard, as well as fog lights, turn lights, an
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Date:
12/18/2019
Argonne-led Team Wins Technology Challenge at SC19

An Argonne-led collaboration won the first SCinet Technology Challenge at SC19 in November, for their work on real-time streaming data analysis. Argonne team members Ian Foster, Zhengchun Liu, Tekin Bicer and Michael E. Papka share some time with the award.

An extensive collaboration led by Argonne recently won the Inaugural SCinet Technology Challenge at the Supercomputing 19 conference by demonstrating real-time analysis of light source data from Argonne's APS to the ALCF. Accelerator-based light sources -- large-scale instruments used to in
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Date:
12/17/2019
A New Playbook for Interference

This is a schematic of an interference experiment in which two photons are produced in different buildings, are generated by different sources and have different colors.

Particles can sometimes act like waves, and photons (particles of light) are no exception. Just as waves create an interference pattern, like ripples on a pond, so do photons. Physicists from the National Institute of Standards and Technology (NIST) and their colleagues have achieved a major new feat -- creating a
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Date:
12/17/2019
Gamma-Ray Laser Moves a Step Closer to Reality

Allen Mills is a professor in the UC Riverside Department of Physics and Astronomy.

A physicist at the University of California, Riverside, has performed calculations showing hollow spherical bubbles filled with a gas of positronium atoms are stable in liquid helium. The calculations take scientists a step closer to realizing a gamma-ray laser, which may have applications in medical imaging,
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Date:
12/08/2019
SafeSite GRP Linear for Harsh and Hazardous Applications
Dialight launched its new SafeSite Glass Reinforced Polyester (GRP) linear form factor for the APAC and EMEA markets. This new LED fitting includes IECEx / ATEX Zone 2, 21 & 22 certification for the ultimate solution in hazardous applications including upstream a
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Date:
12/02/2019