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Illumination design software models LED color mixing
The use of illumination design and analysis software enables verification of the efficacy of color mixing of LEDs prior to product fabrication, saving time and expenditure, say Ryan Williamson and John Koshel. |
LED workshop identifies business and technical opportunities for Europe
A recent workshop held in Germany allowed industry experts to discuss opportunities and challenges facing the LED marketplace and the solid-state lighting sector, writes EPIC's Tom Pearsall. |
LEDs: A small light source with a big future
A roundtable discussion about tomorrow's lighting trends revealed some interesting insights into the LED industry. Reproduced from EBV Elektronik's publication "The Quintessence of LED Technology." |
LEDs make a stand in Frankfurt
There was no shortage of LEDs at the biennial IAA motor show in Germany. |
Hella develops LED headlamp prototype
Lighting manufacturer Hella recently shared details of its full-LED headlamp prototype that uses different transmissive optical elements. Each module in the headlamp contains a multi-chip LED array. |
OLLA project proposes standard for OLED luminous efficacy measurement
The European OLLA project has released a discussion paper on the measurement of luminous efficacy for OLEDs, with the goal of developing a general standard. |
LED headlamps illuminate the way forward
Cadillac has joined Lexus and Audi by introducing a new car that uses white LEDs for forward illumination, reports Tim Whitaker. |
Interview: George Craford of Philips Lumileds
Lighting
By addressing issues such as efficacy droop at high drive
currents, Lumileds is planning to continue increasing the performance of power LEDs to 150 lm/W at 2A – and beyond. Tim Whitaker reports. |
Boost converter LED drive systems for emergency backup lighting
In the third in a series of articles on power converters, Iain Mosely describes how the Boost converter switching topology can be used to drive LED systems for emergency backup lighting. |
COMMENTARY: Patents - One verdict, two outcomes
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Frankfurt showcases LEDs in car
Car makers continue to investigate new ways to use LEDs for vehicle lighting. |
LED luminaire performance: changing traditions can set the right expectations
LED technologies can show radically different photometric performance and life when used in different application environments. Photometric data produced according to traditional testing standards are not very useful for LED luminaires, according to Nadarajah Narendran, Jean Paul Freyssinier, and Jennifer Taylor. |
