Lighting

High-Performance Photocatalytic Oxidation Reactor System

Airborne volatile organic chemicals are oxidized using blue LEDs, fiber optics, and visible light-activated catalysts for space and terrestrial air purification.

As crewed space missions extend beyond low Earth orbit, the need to reliably recover potable water is critical. Aboard the International Space Station (ISS), the water is recycled from cabin humidity condensate, urine distillate, and hygiene wash wastes. In spacecraft cabin air environments, off-gassing from equipment, human metabolism, and human personal care products contributes to significant airborne concentrations of volatile organic compounds (VOCs). These polar and water-soluble compounds ultimately dissolve into the humidity condensate and stress the process load, logistics costs, and lifecycle requirements of the water processing systems. The aim of this effort was to develop the High Performance Photocatalytic Oxidation Reactor System (HPPORS) technology for the destruction of airborne VOCs prior to reaching the water processing systems. This innovation will reduce the logistics costs and lifecycle requirements of water processing systems, and help extend NASA missions to include long-duration space habitation and lunar and Mars colonization missions.

Posted in: Briefs, Aerospace, Green Design & Manufacturing, Recycling Technologies, Remediation Technologies, LEDs, Lighting, Materials, Fiber Optics, Photonics, Light emitting diodes (LEDs), Light emitting diodes (LEDs), Catalysts, Volatile organic compounds
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Public Lighting System Runs on Solar and Wind Energy

A researcher at the Barcelona College of Industrial Engineering, in collaboration with the company Eolgreen, has developed the first autonomous industrialized public lighting system that works with solar and wind energy. This system, developed after four years of research, is designed for inter-urban roads, motorways, urban parks, and other public areas. It is unique in the world, and reduces the cost by 20% compared with conventional public lighting systems.

The prototype is 10 meters high and is fitted with a solar panel, a wind turbine, and a battery. The turbine runs at a speed of 10 to 200 rpm and has a maximum output of 400 watts. Work is being done on a second prototype generator that runs at a lower speed (10 to 60 rpm) and has a lower output (100 W). An electronic control system manages the flow of energy among the solar panel, the wind turbine, the battery, and the light.

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Posted in: News, Batteries, Electronics & Computers, Energy, Renewable Energy, Solar Power, Wind Power, Lighting
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LED Lights with Symbol Marking

Wilbrecht LEDCO (St. Paul, MN) has added symbol/legend marking options to its 100/600 series of panel LEDs for custom applications. Custom and universal symbols, such as battery light or oil level, can be used for easy identification. A simple stamp printing process allows a pictogram or short word to be printed in white or black ink on blue, green, amber, red and clear lenses. The LEDs can be selected in 3 intensities- High Efficiency, Daylight readable super bright, and super ultra-bright. Available in prototype to production quantities, the led indicators are built with standard DC LEDs or bipolar LEDs for AC applications. By adding a simple resistor, they can be operated at 5-60VDC or up to 240VAC.

Posted in: Products, Lighting, Light emitting diodes (LEDs), Light emitting diodes (LEDs), Displays, Displays
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Product of the Month: LED Light Engines for Large FOV Fluorescence Imaging Systems

Innovations in Optics, Inc. (Woburn, MA) offers high power LED Light Engines as excitation illuminators for large field-of-view fluorescent imagers used in life science instruments. LumiBright LE Light Engines feature patented non-imaging optics that direct LED light into a desired cone angle, while producing highly uniform output, both angularly and spatially. The two standard far-field half-angles are 20 and 40 degrees. Available peak LED wavelengths range from 365 nm in the ultraviolet through 970 nm in the near-infrared.

Posted in: Products, Products, Imaging, LEDs, Photonics
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New Compounds Developed to Manufacture Tunable OLED Devices

Researchers have developed new organic compounds characterized by higher modularity, stability, and efficiency that could be applicable for use in electronics or lighting. A proof-of-concept project has begun to verify that the compounds have the photoluminescence and electrochemical properties required for the manufacture of tunable organic LEDs (OLEDs) that can emit in the blue portion of the visible spectrum, thus applying lower voltages and achieving greater efficiency and longer life.

Posted in: News, Electronics & Computers, Energy, Energy Efficiency, Lighting, OLEDs, Manufacturing & Prototyping, Materials
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State-of-the-Art Testing for LED Lamps and Luminaires

Unlike previous lighting requirements, LED testing has become more stringent and complicated, and involves a significant number of tests for various lighting characteristics. From measuring lumen output, efficacy, correlated color temperature (CCT), color rendering index (CRI), and photometrics to calculating life spans, MaxLite has advanced its rigorous procedures of testing and inspection in the new world of solid-state lighting.

Posted in: Articles, Lighting, Test & Inspection, Light emitting diodes (LEDs), Light emitting diodes (LEDs), Test procedures
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Fluid Dispensing Solutions for LEDs

LED lighting is popular because many governments are banning incandescent bulbs to save energy and carbon dioxide, especially for general lighting. In the automotive industry LEDs are being used because they save energy and costs, especially with the migration to hybrid cars and electric vehicles, and because the flexible LED light shape creates cool designs. These applications have created a need for more precise and accurate fluid dispensing as well as the dispensing of some fluids that require special attention. These dispensing applications must take into account:

Posted in: Articles, Lighting, Materials & Packaging, Light emitting diodes (LEDs), Light emitting diodes (LEDs), Pumps
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Choosing the Right Circuit Protection for LEDs

Approximately 25 percent of global energy consumption goes to lighting applications, so making lighting more energy-efficient could have a dramatic impact on overall energy usage or make more power available for other uses. Legislation designed to discourage the use of incandescent lamps has been a significant factor in the growth in demand for LED lighting equipment. At the same time, both consumers and industrial users are increasingly interested in energy-efficient lighting options, further stimulating the demand for LED lighting.

Posted in: Articles, LEDs, Lighting, Powering & Controlling LEDs, Light emitting diodes (LEDs), Light emitting diodes (LEDs), Energy conservation
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Solar Powered LEDs Offer Security to Mesa Residential Community

When residents of the Park Centre Casitas residential community in Mesa, Arizona, got together and hired a security company to survey the property and suggest ways to keep it safe, the security company suggested adding perimeter lighting.

Posted in: Application Briefs, LEDs, Lighting, Exterior lighting, Light emitting diodes (LEDs), Light emitting diodes (LEDs), Solar energy
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LEDs Reduce Energy Consumption for Monte Carlo Resort’s Street of Dreams

Light Efficient Design, a division of TADD, LLC, recently completed an LED retrofit project in the busy “Street of Dreams” retail area of the Monte Carlo Casino and Resort. Monte Carlo, one of 10 MGM resorts on the Las Vegas Strip, replaced 96 500-watt halogen lamps with 50-watt LED lamps in a retail area covering 8,950 square feet. The dramatic decrease in watt usage has created tremendous energy savings.

Posted in: Application Briefs, LEDs, Lighting, Exterior lighting, Light emitting diodes (LEDs), Light emitting diodes (LEDs), Energy consumption
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