December 2009 Archives

Blue led - 20th anniversary of Cree's commercialisation

By Alun Williams - Electronics Weekly.com on December 18, 2009 2:00 PM | No Comments | No TrackBacks
blue led old jpg.jpgThanks to Ginny from the Cree 'Lighting the LED Revolution' blog for flagging this one - the 20th anniversary of the commercialisation of a blue LED, following red and green LEDs and thus enabling a fuller colour spectrum, including white lighting...
"What were you doing in 1989? Maybe you were rocking out to "Don't Worry, Be Happy," the Grammy-award winning hit of the year. Perhaps you were killing time playing Tetris on the newly-released Nintendo Game Boy," she begins.
Continue reading Blue led - 20th anniversary of Cree's commercialisation.

LED traffic lights and unintended consequences

By Alun Williams - Electronics Weekly.com on December 18, 2009 11:46 AM | No Comments | No TrackBacks

High electrical efficiency means low heat and, oh dear, LED traffic lights don't get warm enough to melt snow from their own lenses.

Boing boing has the story.

By the way, LED car headlight makers are aware of the ice and snow problem.
 
Electronics Weekly knows of at least one that is using a fan to blow air from the LED heatsink over the front glass for defrosting.

Steve Bush

Morrisons makes fresh choice of LEDs

By Alun Williams - Electronics Weekly.com on December 15, 2009 1:11 PM | No Comments | No TrackBacks
15dec09Morrisons1.JPGWe get a steady stream of we-have-converted-to-LEDs emails in the Electronics Weekly inbox, few of which raise any interest at all.

One arrived this morning and, expecting to read that yet another Mid-Western university has installed a few LED streetlamps, imagine my surprise when it turned out to be a Morrison's petrol station in Yorkshire.

"The entire site at Illingworth from the canopy and the carwash to the signage and refrigeration cabinets utilises Rebel LEDs and Morrisons now enjoys energy savings of approximately 45% across the installation," said Lumileds.

Continue reading Morrisons makes fresh choice of LEDs.
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Author Profiles

Paul Ward
As Opto Product Manager at Farnell, Paul is overseeing the company's involvement in the rapidly evolving and high profile LED lighting market sector.

As well as ensuring that Farnell offers the latest technologies and products related to solid state lighting, Paul is also responsible for ensuring that the resources are in place to make it easier for design engineers to specify and design-in LED solutions for their applications.

Educated in Production Engineering and Design at Sheffield Hallam University, Paul has worked in various engineering, training and marketing roles for companies including C&K switches, ITT Cannon, Cherry and LED specialist Chicago Miniature Lighting.

Away from the world of LEDs, Paul is a Founder of the charity RTTW, Photographer and Harley Davidson rider; he has ridden and snapped across Europe, New Zealand and the USA on his chrome hog!

Gordon Routledge
Gordon Routledge is one of the original pioneers in LED illumination having worked with LEDs in illumination applications since 1996. Currently VP of Illumination at Dialight, Gordon founded Lumidrives in 2001, having previously been managing director at ACDC Lighting Systems. Gordon has a degree in Electrical & Electronic Engineering from university of Manchester Institute of Science and Technology.

Ian Bryant
ian bryant.jpgIan Bryant is Business Development Manager LED Division at Carclo Technical Plastics. He has worked on and off at Carclo (Formerly Combined Optical Industrial) since leaving school. He has worked through the company from Toolmaking to starting the company on the road of LED optics business some 6-7 years ago, starting with a standard range and more in line with the business of custom optics. In between all this he has worked in engineering and as a works Director for a hydraulics company but kept getting pulled back to the optics industrial. We are able to offer the full solution from idea to parts so have a very good understanding on what is needed. You will see some posts from our design team also under my name.

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About this Archive

This page is an archive of entries from December 2009 listed from newest to oldest.

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