UV / IR
IES and IUVA Collaborate to Publish ANSI Standards for Measuring Ultraviolet C-Band (UV-C) Sources Used for Disinfection
The Illuminating Engineering Society (IES, est. 1906) and the International Ultraviolet Association (IUVA, est. 1999) have partnered to assemble experts in the measurement of ultraviolet C-band emissions (UV-C) to develop American National Standards for the measurement and characterization of UV-C device performance. UV-C devices for healthcare and personal care have proliferated in recent years, particularly during the COVID-19 pandemic, despite the absence of standards to enable accurate measurements and comparisons of the products. Through this partnership IES and IUVA aim to cooperatively promote awareness of and improve the application of ultraviolet "disinfection" technology in the healthcare system, initially through the development of standardized methods of measurement of ultraviolet "disinfection" products including UV lamps, luminaires and lighting/radiating systems, utilizing both discharge (e.g. low-pressure mercury and xenon) and solid-state (e.g. light-emitting diode) technologies.
Read more »
Ultraviolet Germicidal Irradiation: High-Precision UVC Exposure Measurements from Gamma Scientific
Gamma Scientific announces the release of its Germicidal Ultraviolet Irradiation measurements system to perform irradiance and radiant exposure measurements in the UVC region of the spectrum. The system consists of the model 268UVC sensor, which measures 37 mm in diameter with an active area of 11 mm². The sensor, when paired with a Gamma Scientific optical power meter and energy meter, is capable of measuring irradiance levels ranging from 0.05 μW/cm² to 500 mW/cm².
Read more »
Global Lighting Association Releases Safety Guidelines for UV-C Disinfecting Devices
The Global Lighting Association has issued a Position Statement containing guidelines for the safe use of UV-C devices. The statement concerns safety and standardization requirements.
Read more »
Precise Measurement of UV Light Sources for Disinfection
UV radiation encompasses a very wide wavelength spectrum between 10 and 400 nm and is subdivided in ISO Standard 21348 into three ranges. The UVC range between 100 and 280nm is currently extremely relevant for air and water disinfection for combating COVID-19. Since the outbreak of the pandemic this has been manifested, among other things, in a sharp increase in the demand for UVC light sources.
Read more »
Intuitive Interaction: Ultra-compact Infrared LED from Osram Enables Gesture Control in Car Interiors
Automotive interior design is currently undergoing a fundamental change. Displays are getting larger, the number of manual controls is decreasing, and customizable lighting solutions are creating a feel-good atmosphere. Advanced driver assistance systems (ADAS) and technologies previously designed for mobile devices – such as facial recognition, eye tracking or gesture control – are increasingly making their way into the automotive sector. These technologies are based on infrared light. The smaller and more powerful the required components, the easier they are to integrate into complex designs. Osram’s Oslon Piccolo now offers an extremely compact infrared LED (IRED) that packs enormous power in a small package, making it ideal for customers.
Read more »
CIE Position Statement on the Use of UV Radiation to Manage the Risk of COVID-19 Transmission
The coronavirus disease (COVID-19) pandemic has accelerated the search for environmental controls to contain or mitigate the spread of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) responsible for the disease. SARS-CoV-2 is usually transmitted from person to person by contact with large respiratory droplets, either directly or by touching virus-contaminated surfaces (also denoted as fomites) and subsequently touching the eyes, nose or mouth. Importantly, there is growing evidence of virus transmission via the airborne route as the large respiratory droplets dry out and form droplet nuclei which can remain airborne for several hours. Depending on the nature of the surface and environmental factors, fomites can remain infectious for several days (van Doremalen, 2020).
The use of germicidal UV radiation (GUV) is an important environmental intervention which can reduce both contact spread and airborne transmission of infectious agents (like bacteria and viruses). GUV within the UV-C range (200 nm–280 nm), primarily 254 nm, has been used successfully and safely for over 70 years. However, GUV must be knowledgably applied with appropriate attention to dose and safety. Inappropriate GUV application can present human health and safety issues and produce insufficient deactivation of infectious agents. Application in the home is not advisable and GUV should never be used to disinfect the skin, except when clinically justified.
Read more »
Lumitronix Provides Solutions for Use of UV-C LED Under Real Conditions
As an official distributor of Nichia in Europe, the Hechingen-based LED company Lumitronix offers access to the most powerful UVC LED currently on the market. The NCSU334A emits a wavelength of 280 nm in the ultraviolet range and especially in the UV-C band and enables immediate sterilization and cleaning of air, liquids and surfaces. Bacteria, germs and viruses can be reliably killed in this way. This means that the UV LED from the world's largest LED manufacturer can also act as a possible weapon against the novel corona virus.
Read more »
Effective UV-C LED Solutions for Pathogen Containment, Medical and Biotechnical Applications at euroLighting
Short UV-C light has been proven to kill 99.9 percent of bacteria, viruses and other pathogens. euroLighting offers new product solutions in the form of UV-C LEDs, the effect of which can be used specifically to effectively sterilise air, water and surfaces and greatly reduce the risk of infection. Based on the current virus pandemic and in view of statements by experts that such situations could occur more frequently in the future, solutions are urgently sought to contain the spread of pathogens as quickly and effectively as possible.
Read more »
Luminus Breaks the $0.10 per mW Barrier for UV-C LEDs
Luminus Devices announces the immediate availability of its newest UV-C LED, the XBT-3535, with performance ranging from 50 mW to 80 mW in the 275-285 nm range. With the global need for disinfection and sterilization devices increasing, the price-performance combination of the XBT-3535 will allow companies to quickly bring novel and affordable solutions to market.
Read more »
UV-C Radiometer for Disinfection Effectiveness and Safety of UV-C LEDs and Germicidal Lamps
The X1-1-UV-3726 radiometer enables the effectiveness of UV germicidal irradiation (UVGI) to be accurately determined for both low pressure mercury (254nm) germicidal lamps and UV-C LEDs. Additionally, the device has sufficient sensitivity to detect if undesired exposure poses a photobiological safety risk to users.
Read more »
Seoul Viosys and SETi's Violeds Technology Proves 99.9% Sterilization of Coronavirus (COVID-19) in 30 Seconds
Seoul Viosys and Sensor Electronic Technology, Inc. ("SETi"), leading global innovators of UV LED products and technology, announced that it has been successful in achieving 99.9% sterilization of coronavirus (COVID-19) in 30 seconds. Tests were conducted with the research group of Korea University, Korea's top rank university, by using a compound semiconductor Violeds technology that is being mass-produced.
Read more »
Nichia UV LED Technology Supports Evolving Markets
Nichia, a leading global specialist in LED technology, is now aiming to extend its dominance to the UV market following its impressive showcase at the recent RadTech 2020 conference and exhibition in Orlando, Florida, USA. The company's latest solutions remain ideal for curing applications, but an extended portfolio is of particular benefit, as UV is known to be incredibly effective in killing viruses, bacteria, fungi and protozoa.
Read more »
Specification and Applications for ProLight Opto's Recently Released UV-C LEDs
Escalation of the Coronavirus outbreak have led to higher demand for Ultra-Violet C (UV-C) LED around the world. UV-C as a germicidal light source can inactivates microorganisms by destroying nucleic acids and disrupting their DNA with its short wavelength. The effective germicidal wavelength is between 200-290 nm; shorter wavelength is more efficient but is also more damaging to the human body. The major chip manufacturers make 265-285 nm as mainstream wavelength, because it can improve single chip's radiometric power and increase in sterilization efficiency.
Read more »
GL Optic's GL SPECTIS 4.0 UV - Accurate Characterization of UV-A, B and C Radiation Sources
GL Optic's new model of an affordable GL SPECTIS 4.0 UV is designed for fast verification of UV radiation in the production environment as well as in laboratories. GL Optic introduces a range of solutions optimized for UV LEDs measurement in a variety of applications.
Read more »
Everlight Releases UVC3535NUB Series for Medical Treatment, Water and Air Purification & Sterilization
Everlight Electronics, a leading player in the global LED and optoelectronics industry, releases its new ELUC3535NUB series of UVC products for the maintenance of life quality and health, using the epitaxial and flip chips on the sapphire substrate to guarantee quality and sterilization.
Read more »
Instrument Systems: New Products for the Postponed L+B
Instruments Systems has been prepared to feature two new respectively optimized solutions for two different tasks at Light + Building which is postponed to September 27th - October 2nd. Instrument Systems has modified its proven TOP 200 telescopic optical probe to satisfy the requirements of the new IEC TR 62778 technical report. Furthermore, Instrument Systems launches traceable calibration UV-LEDs with extremely low measurement uncertainty.
Read more »
Selecting the UV LED Wavelength for Purification Applications
Patrick Durand is the Worldwide Technical Director at Future Lighting Solutions (FLS) with over 15 years of experience in the solid state lighting industry. Patrick leads the FLS Technical Marketing teams and FLS laboratory teams located in multiple regions around the world with the objective of providing world-class support to lighting OEMs in developing luminaires with the latest SSL technology from the light source to the complete system incorporating the LED driver, optic, thermal management and intelligent control solutions.
Read more »
Transparent Material Considerations for UV Optics in Horticultural Lighting Applications
Advancements in UV LED technology have begun changing the horticultural lighting landscape. Research is still ongoing to discover the extent of benefits and best practices of using UV light in horticulture. Using optics in tandem with UV LED light systems can help reach performance goals and optimize growing. Although there are several UV- transmitting materials available, not all are equivalent or able to meet the requirements for UV applications. Justine Galbraith, glass engineer, and Sharayah Follett, market development manager at Kopp Glass, Inc. discuss the performance considerations of various UV-transmitting materials and how application challenges are addressed by integrating optical elements.
Read more »
Lextar Launches New UV LED Series for Sterilization and Curing
UV LED technology is regarded as a more efficient method of treating microorganisms in drinking water. This technology has been valued and included into drinking water treatment standard by NSF International last November for microbial reduction and provides a new test method to certify manufacturer claims.
Read more »
Measuring the Oxygen Content of Blood with LEDs
Pulse oximetry is a non-invasive method for determining haemoglobin (Hb) saturation through oxygen in the blood and heart frequency. It uses the fact that oxygen-rich and oxygen-poor haemoglobin absorb red and infrared light differently. In order to measure the oxygen content reliably, LEDs with high performance, constant quality and low scattering are needed as light sources. With the WL-SMTW and WL-SITW series, Würth Elektronik has suitable red and infrared LEDs in its portfolio. In addition, there is a matching light sensor available: The phototransistor WL-STTW can reliably detect both red and infrared light.
Read more »
Nationstar Overall Layout in UV LED Market
In August 2018, Nationstar set up the Non-visual Light Source Business Division, focusing on IR LED, UV LED, animal and plant lighting. Nationstar has been fully laid out on UVA/UVB/UVC. Since 2016, Nationstar has launched near-ultraviolet LED, deep-ultraviolet LED and modules, with wide wavelength range, high reliability and good feedback in the market. At present, we have established partnerships with many well-known manufacturers.
Read more »
American Bright Optoelectronics Expands Its Family of IR Products to Cover Security, Remote Control, Appliance and Night Vision Applications
American Bright has introduced the most complete family of discrete infrared (IR) products in the industry, expanding its 20-year global leadership in the remote control and sensing markets. Product selection includes through-hole, surface mount (SMT) and PLCC variants of the industries’ most popular components.
Read more »
Luminus Adds Eleven High-Intensity IR LEDs
Luminus Devices has significantly expanded its portfolio of high-power infrared (IR) LEDs with eleven emitters designed to address the rapid expansion of automotive, consumer, machine vision, medical, and security applications. The Luminus IR SST LEDs are now offered in three wavelengths – 810nm, 850nm, and 940nm – and six beam angle options ranging from 40° to 130°. The high radiometric power output and low thermal resistance allow system designers to reduce the number of emitters and overall footprint for a broad range of infrared applications.
Read more »
Lumileds Tailors Luxeon IR Family for Cost Conscious High Power Applications
Lumileds introduced the Luxeon IR 2720 Line, high power emitters that set the standard for abundant radiant power delivered in an industry standard package for seamless integration in existing designs. The emitters provide high radiant power of up to 1,300 mW at 940 nm or 1,250 mW at 850 nm wavelength and feature high efficacy and a popular 120° beam angle. The 2.75x2.0 mm LEDs are undomed and especially useful for applications with package height limitations that prevent the use of domed solutions. The emitters address a wide array of cost conscious infrared applications from surveillance and machine vision to iris scanning and health monitors.
Read more »
Fast Production Test of UV-LEDs
Numerous applications, for example in the medical area or in material testing, are based on precisely specified UV radiation. For UV-B and UV-C emitters, the measurement of their spectrum between 325 nm down to 200 nm is generally only possible with extended measurement times due to their low radiant flux. As such, a condition for fast testing within production is high reliability in conjunction with high optical throughput of all participating system components. Within its well-established CAS-series of premium spectroradiometers over many years, Instrument Systems has developed a novel series-type CAS 140D-157. This new system measures precisely and reliably not only within the visible spectrum, but also in the UV. Coupled with a PTFE-coated integrating sphere, the system permits for fast 24/7 production tests of UV emitters to be run.
Read more »
Successful Development of High-output Broadband LEDs Capable of Emitting Visible Light to Near-infrared Light
Ushio Opto Semiconductors, Inc., a wholly-owned subsidiary of Ushio Inc., has recently developed a broadband LED that produces the world’s maximum output of 160 mW over a wide bandwidth between 400 and 1000 nm, which covers the range from visible light to near-infrared light. From the 1st of December, Ushio Opto Semiconductors, Inc. started shipping samples from its new “Spectro Series” lineup as part of the “epitex series” LED brand and will exhibit Photonics West 2019 (The Moscone Center US San Francisco) which will be held on February from 5th to 7th.
Read more »
Colloidal Quantum Dots Make LEDs Shine Bright in the Infrared
ICFO researchers report on the development of a colloidal quantum-dot light emitting diode with unprecedented quantum and power conversion efficiencies in the infrared range. The ideal optoelectronic semiconductor material should be a strong light emitter i.e. should emit light very efficiently upon optical excitation as well as be an efficient charge conductor to allow for electrical injection in devices. These two conditions when met can lead to highly efficient light emitting diodes as well as to solar cells with the possibility to approach the Shockley-Queisser limit. Until now the materials that have come close to meeting these conditions have been based on epitaxially-grown costly III-V semiconductors that cannot be monolithically integrated to CMOS electronics.
Read more »
UV LED Technology for Emerging Applications in Agriculture
The Ultraviolet (UV) LED market has expanded five-fold in the past decade and is projected to grow to over $1 billion by 2025. A key trend expected to influence the market is the ability to expand into new applications, including agriculture. UV light, at proper frequency and dose, can increase the production of active substances in medicinal and traditional plants and it can also help maintain a healthy growing environment. But to fully take advantage of UV LEDs, some major re-design considerations are required. Terrance Berland, CEO of the Violet Defense Group, the parent company of Violet Gro, will explain which considerations these are; for instance, why it is crucial to incorporate the appropriate lens material.
Read more »
OMC's New 30° Beam Angle SMD LEDs for High-Intensity Applications
OMC, the pioneer in optoelectronics design & manufacture, has introduced a new range of narrow angle, surface-mount LEDs in a variety of package styles and all popular LED wavelengths. The new SMD emitter series features integrated lenses moulded into the package which provides a 30 degree output beam. Applications for visible wavelengths include signalling and indication, in which the beam needs to be visible over greater distances, while the company’s infrared wavelength versions are used for sensing and data-communication over greater distances and with higher precision than using standard, wide-angle SMD components.
Read more »
DOWA Announces Short-Wavelength IR LEDs with the World’s Highest Output Power
DOWA Electronics Materials Co., Ltd., a subsidiary of DOWA Holdings Co., Ltd. , has successfully developed short-wavelength-infrared LED chips with output power that is 3.5 times higher than existing products and is the highest in the world at 6.8 mW [1], with a peak wavelength of 1,300 nm. DOWA has started to deliver sample products.
Read more »
