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LEDs Magazine Articles

MOCVD cools down, LED downstream processing heats up

Requirements for LED processing equipment are changing from cost driven to more technology driven decisions, a clear trend to more complex and more efficient manufacturing, according to Thomas Uhrmann and Thorsten Matthias of EV Group.

Color-quality standards bodies need to consider the broad user base (MAGAZINE)

Work on a new and improved measure of color-rendering quality has apparently stagnated in the CIE, and the failure leaves the broad lighting community without a tool that would be very useful, says MAURY WRIGHT.

LED-based products must meet photobiological safety standards: part 3 (MAGAZINE)

To conclude our series of articles on LED photobiological safety, LESLIE LYONS puts IEC62471 to work in consideration of the hazards posed by today’s LEDs and LED-based products.

Low-voltage LED lamps present unique driver challenge (MAGAZINE)

MR16 sockets present a significant retrofit-lamp opportunity for LEDs, explains KAMAL NAJMI, but installed transformers complicate the design of a drop-in SSL replacement.

LED lighting at Louvre symbolizes Toshiba’s move into Europe (MAGAZINE)

A ceremony has been held to mark the first phase of a project to install LED exterior lighting at one of Europe’s great art museums, writes TIM WHITAKER.

TIR optics enhance the illuminance on target for directional LED modules (MAGAZINE)

Secondary optics using total internal reflection perform better than reflector-based optics for constructing directional LED-based modules, but only if the light-distribution pattern is correctly evaulated, write WU JIANG and KEVIN SCHNEIDER.

Use of controls escalates in LED lighting despite lack of standards (MAGAZINE)

Lighting companies are moving forward with adaptive-control technology that can save significant energy especially when combined with inherently-efficient LED sources, explains MAURY WRIGHT. However, no standards exist that would allow interoperable use of luminaires, sensors, and controllers from different vendors.

Lumen-maintenance testing for LED lamps, light engines and luminaires (MAGAZINE)

Now that procedures are in place to make long-term lumen-maintenance projections for LED components, efforts are being made to develop methods for testing the lighting system as a whole, as JIANZHONG JIAO explains.

UV LEDs ramp up the quiet side of the LED market (MAGAZINE)

Relative to visible LEDs, UV LEDs are a quiet market at only $30 million, yet recent breakthroughs in radiant power and intensity have enabled the displacement of mercury-vapor lamps in applications including UV curing and counterfeit detection, reports LAURA PETERS.

Are you using all of the lumens that you paid for? (MAGAZINE)

The latest LEDs can reliably operate at drive currents well above binning currents, delivering more lumens and robust luminaire life while lowering system cost, explain DAVID COX, DON HIRSH, and MICHAEL MCCLINTIC.

European Commission initiates public consultation on LED lighting (MAGAZINE)

A Green Paper on LED- and OLED-based lighting published by the European Commission launches a period of public consultation on the future development of SSL in Europe, as TIM WHITAKER explains.

LEDs Magazine February 2012 issue

The February 2012 issue of LEDs Magazine is now available.

WEBCAST: Lighting for Tomorrow - Promoting SSL Lighting and Controls that are Judged to Sell

This webcast will explain the marketing and promotional benefits for winners of the Lighting for Tomorrow competition.

January 2012 issue - LED Suppliers Directory

The January 2012 issue, the annual LED Suppliers Directory, is now available.

SIL 2012 Preview #5: Activities in the LED Light & Design Pavilion

Strategies in Light 2012 will feature many educational functions including trade discussions with US Department of Commerce personnel and five tutorials that offer continuing education credits, writes Vrinda Bhandarkar.