LED Luminaries

LED news and insight from our technology editor Steve Bush, who has been messing with LED lighting for more years than he would care to remember.

Latest Tech News On LED & OLED Research

A bit of light relief

In a searing scientific investigation, Electronics Weekly answers the thorny question:

How many lemons does it take to light an LED.

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200 lm/W LED luminaire demonstrated

A 200 lm/W luminaire has been demonstrated, according to Cree.

Very little information as been released.

What there is, is here.

We have asked Cree for more…

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Dev kit for DALI and DMX colour lighting

Gaggione, Cree, and Microchip have teamed up to produce a lighting development kit for digitally-controlled multi-coloured LED lighting.

The Lighting Communications Development Platform  combines a PIC microcontroller with a RGBW MC-E LED and a 45mm LLC19N colour-mixing narrow beam focusing optic.

Also in there is DALI…

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LED panel enables decoding of invisible images

Soon you could have access to secret information just by waving your hand, writes Sandrine Ceurstemont, editor, New Scientist TV. New digital signage allows you to decode invisible images by quickly moving your fingers in front of the screen.

The system, developed by Hirotsugu Yamamoto and colleagues from University of…

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LEDs serve broadband communications

Edinburgh start-up Visible Light Communications (VLC) is focussing on using flickering LEDs instead of WiFi for broadband communications, writes David Manners.  

Speeds of up to 500Mbits/sec have been achieved for the technology, called Li-Fi, but the first product from VLC – a consumer transmitter – will deliver data at…

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Ethylhexyl carbazole + rubrene = Liquid OLED

One LED story to note, from our Research.Materials section: Kyushu University reports liquid-OLED

Writes our Technology Editor, Steve Bush:

Scientists at Kyushu University in Japan have reported liquid-OLED in a recent issue of Applied Physics Letters.

In cells sandwiched between sheets of glass – much like an LCD…

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OLEDs with color temp spectrum of sunlight - Update

We briefly flagged, very recently, research carried out at the National Tsing Hua University in Taiwan, into organic LEDs with a full range of colour temperatures. They were capable of copying the full spectrum of sunlight throughout the day (2500 K – 8000 K) – Taiwan researchers create OLEDs with color temp…

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Site update: Researchers design power LED retaining efficiency at high current

An LED-related article has just been posted on Electronics Weekly: Rensselaer designs power LED retaining efficiency at high currentThe US Rensselaer Polytechnic Institute has designed a power LED that retains efficiency at high current. “The device achieves a notable reduction in efficiency droop, a well-known phenomenon that provokes…

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