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Luminus Now Makes White LEDs

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At the beginning of this month it was announced that Luminus, the LED company, is getting together with a Japanese company called Nichia to make parts for a new line of high-powered LED sources. Nichia’s phosphorescent technology is apparently pretty great for making white light, so Luminus is going to make flat styled chips for the partnership.  Luminus is no slouch in technology, fo sho – their manufacturing technology was developed at MIT – and the PhlatLight technology has been doing well in the news.

You might know Luminus as a company that makes  colored chips for PTVs and projectors and such – now they have a large series of white LED chips that are boasting some pretty excellent performance. A few of their products are claiming a 70% lumen maintenance after 60,000 hours with a single chip providing 2,250 lumens.  Not bad, eh?

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Thanks, Ecogeek and CNet!

A Bit of an “In Your Face” to White LEDs

I just read an article at LEDs Magazine from a lighting designer who had some very frank things to say about the white LED manufacturing industry.  I’ve only added an exerpt, but it’s not a very long article.

Check this out:

As an exhibition designer and lighting specifier I have been a keen advocate of white LED lighting in exhibitions, but recently I have had to reconsider this decision. There is an urgent need for the white LED lighting industry to develop a more transparent and meaningful framework for the specification and performance rating of white LED-based lamps.

If this is not done then I believe that many of the developmental gains of the last few years may be squandered as users are put off by the poor performance of some products.

High failure rates and very rapid phosphor degradation has made manufacturers claims of 50,000-hour lifetimes seem, at best, grossly exaggerated hyperbole and, at worst, deliberate deception.

A recently surveyed exhibition, containing 48 GU10-base lamps, revealed that in 2500 hours of operation, light output had fallen by between 82 and 87%, while 12% of the lamps had failed electronically.

If it looks like a dud, it smells like a dud, it might be a dud.  Read the whole article here.  The letter was written by Frazer Monks from Exhibitas Design.