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LIGHT SOURCES FEATURES
Growth in OLED Lighting Demands New Metrological Traceability Dec 31, 2020 — The increasingly broad transi­tion from incandescent light bulbs to OLEDs for general lighting poses new challenges to light measurement. OLEDs exhibit completely different and far greater variations in their spectral distribution. This variability does not support optimal measurements using established calibrations with standard illuminant A, due to different spectral sensitivities to errors in calibration and measurement. Metrological traceability and good control over measurement...
Photonics Spectra, Feb 2021
High-Speed Imaging Capabilities and Applications Expand Dec 8, 2020 — Fast and efficient delivery of product into the customer’s hands is the endgame in manufacturing. Any defect that occurs as products progress along the manufacturing line may be magnified, which can cause bottlenecks in production or require...
Photonics Spectra, Jan 2021
Tunable Laser Light Sources Advance Nanophotonics Research Jul 26, 2018 — A considerable part of contemporary photonics research that investigates the interaction of light with nanoscale objects — nanophotonics — is motivated by the commercial potential of real-world devices. A vast number of experimental studies call for...
EuroPhotonics, Sep 2018
Scatter and BSDF Measurements: Theory and Practice Feb 7, 2018 — Understanding the fundamental characteristics of scatter and the limitations imposed by scatterometers is essential to performing meaningful stray light calculations.
Photonics Handbook, Mar 2009
Member Exclusive
Promise of Organic Photonics Looms Large Oct 3, 2017 — Organic materials could supersede their inorganic cousins in many applications thanks to some unique and intriguing properties. From lasers, lighting and Li-Fi (light fidelity) to OLED TVs and solar cells, organic photonics offers a thin, flexible...
Photonics Spectra, Oct 2017
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Laser Light Source Delivers Superior Optical Control Sep 25, 2017 — Legacy light sources such as halogen and metal halide produce highly collimated directional beams, but with short life and lower efficiency than LED sources. LEDs are highly efficient and long lasting, but are poor at creating beam angles below 10...
Photonics Spectra, Nov 2017
UVC LEDs Can Combat Hospital-Acquired Infections Sep 6, 2017 — The Centers for Disease Control and Prevention (CDC) reports that one in every 25 hospital patients in the U.S. will contract a hospital-acquired infection (HAI) during their visit. Recent CDC reports show that progress is being made in HAI...
BioPhotonics, Oct 2017
Quantum Dots, Fluorescent Proteins Vie for Supremacy May 23, 2017 — The first advances in color displays date to the mid ’50s with the development of the cathode ray tube1, the primary display technology until liquid crystal displays (LCDs) emerged a decade ago. For a brief period, plasma technology showed...
Photonics Spectra, Jul 2017
Designing Lighting Systems Tuned to Circadian Rhythms Apr 25, 2017 — There is a lot of interest these days in the physiological effect of light on the human body. Variously referred to as human-centric lighting, biological lighting, or circadian lighting, all reflect the emerging understanding that light can have a...
Photonics Spectra, Jun 2017
Member Exclusive
Medical Lasers Cut and Heal Oct 26, 2016 — For medical lasers, the future may include both addition and subtraction. That’s because, in medicine, lasers have traditionally been used for ablation, cutting and other processes that remove tissue. Now researchers and companies are looking into...
Photonics Spectra, Dec 2016
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Solar Steps Up Oct 19, 2016 — Despite a challenging environment, there is hope for the solar market with progress being made across many areas of technology. While the advances may not be revolutionary, the small steps toward improving the key features of cost, efficiency and...
EuroPhotonics, Dec 2016
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LEDs and Lasers Battle for Dominance in Brain Research Sep 13, 2016 — Lighting up the brain to better understand, treat or even cure brain disorders has become an established field known as optogenetics. First introduced in 2005 by professor Karl Deisseroth as he worked in a small laboratory at Stanford University, it...
BioPhotonics, Oct 2016
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Maximum Exposure: Ray-Tracing Software Optimizes Reflector Design Aug 30, 2016 — The concentrated solar market is often overshadowed by photovoltaic (PV) panels, yet the market segment is expected to grow by nearly 20 percent annually through 2020. Concentrated solar power — or CSP — has unique performance advantages...
Photonics Spectra, Oct 2016
Testing the Limits of Excimer Lasers: Annealing for Advanced Displays Jul 27, 2016 — Low-temperature polycrystalline silicon is increasingly used as the thin-film transistor material on the glass backplanes of high-performance displays, particularly for smartphones. These thin films are fabricated on large glass panels that then are...
Photonics Spectra, Sep 2016
Achieving Optimum LED Performance With Quantum Dots Jul 13, 2016 — The use of quantum dots in combination with LEDs shows huge potential benefits for the lighting industry. The versatility and tunability of quantum dots can offer solutions when optimizing luminaire design for peak performance.
EuroPhotonics, Sep 2016
Low-Level Light Therapy Is Still Looking for — and Finding — Clinical Inroads Apr 15, 2016 — The field of low-level light therapy (LLLT) emerged soon after the invention of the ruby and helium-neon (HeNe) lasers in the early 1960s. Since then, the technique has progressed, proving effective for a number of therapeutic areas, including...
BioPhotonics, Jun 2016
An Alternative to LEDs for Full-Field Imaging Apr 6, 2016 — For some applications, the defining attributes of traditional lasers — high spatial and temporal coherence — can have an adverse effect. High spatial coherence introduces artifacts such as speckle in imaging, which degrades the image. As...
Photonics Spectra, May 2016
Cadmium-Free Quantum Dots Offer Vibrant Color for Liquid Crystal Displays Mar 29, 2016 — Display manufacturers are constantly striving to satisfy consumers’ never-ending appetites for better and more true-to-life electronic displays. Accomplishing that has as much to do with color as it does with resolution. To do so, one...
Photonics Spectra, May 2016
OLED Microdisplays: Advancing Virtual and Augmented Reality Smart Glasses of Today and Tomorrow Mar 10, 2016 — Mobile personal electronics and wearables have become immensely popular around the globe, and this has given rise to a new dilemma. Screen content has grown, mainly from multimedia applications, resulting in increased display pixel count. The...
Photonics Spectra, Apr 2016
Member Exclusive
LED Materials Bring White Light and More Feb 23, 2016 — Efficiency and stability may make LEDs the lighting choice of the future, but commonly used inorganic materials are expensive and creating the right kind of white light remains a challenge. Researchers around the world are looking for alternatives...
Photonics Spectra, Mar 2016
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Tunable Light Sources: A Popular Choice for Measurement Applications Feb 10, 2016 — Many common spectroscopic measurements require the coordinated operation of a detection instrument and light source, as well as data acquisition and processing. Integration of individual components can be challenging and various applications may...
Photonics Handbook, Mar 2009
Microscopy Illumination: Considering Nonlaser Light Sources Jan 19, 2016 — As recently as five years ago, shopping for a microscope light source was fairly straightforward. For routine applications, it was tungsten halogen, typically 100 W, while for fluorescence, it was an arc source, typically 100 W mercury. Today, there...
BioPhotonics, Jan 2016
Continuing Education for the Future of Photonics Dec 17, 2015 — Eastern Europe, like many other regions, is putting great thought and effort into producing the next generation of photonics and optics researchers and engineers. Countries including Romania are working hard to keep up with the growing demand for...
EuroPhotonics, Dec 2015
Cladding With High-Power Diode Lasers Dec 17, 2015 — Cladding is an additive manufacturing process used in a variety of industries for improving the surface properties of a part, or to resurface a component that has become worn through use. There are a number of different techniques for performing...
EuroPhotonics, Dec 2015
LEDs in Biology Research: From Microscopy to Optogenetics Dec 17, 2015 — Microscopy has long held a crucial place in bioscience research, dating back to the first observations of living cells. Techniques that include the use of LEDs have been developed — and continue to be — to meet new and evolving demands...
EuroPhotonics, Dec 2015
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