Light & Building 3
Frankfurt, 13th April 2010
Today my blog comes “live” from the fair. The last two nights I have been struggling to get my blog out before midnight due to the social evening activities surrounding the fair. I think most of you know what I mean :)… Tonight is the PLDA night so it is unlikely I will be in a state of blogging later on …
The talk of the day remains LED as there is really a lot happening there. The usual suspects such as Philips, Osram, GE, Toshiba, etc, as lamp manufacturers all try to better each other with performance data and that is one of the issues. How can we assure that the data provided are true and accurate? Driven amongst others by Philips and Erco under the IES umbrella new codes have been developped called LM79 and LM80 which will certify actual measured and tested performance of the LED. This includes lumen output and maintenance, CRI, lifetime, etc. Already some manufacturers have developed compliant fixtures. Making LED systems code compliant will really help to assure the lighting quality. Though I was told that already a chinese company was caught with fake certified logo’s on their fitting….hmmmm.
I have to mention OLEDs of course. First introduced on a wider scale at last fair, this year sees many companies with OLED explorations. It is obvious that most companies do not really know yet where the future applications are and many of them are therefore testing the market with various exhibits in various shapes and forms. Sizes and brightness have increased but besides some creative and decorative applications I have not really seen developments of great use yet. Performance is still weak (unless you have a lot of them together) and it is therefore not surprising to see hybrid OLED solutions mixed with “traditional” LEDs to push up the lighting performance. One company (Novaled) had launched into emergency and signage lighting which could have some potential.
Finally I would just like to mention the remote phosphorisation technology which seems to be a way to better control the binning (color)variations, one of the problems of LED lighting. Spo far white light is mainly created by putting a “yellow” phosphor layer right on top of a blue LED. By creating a sort of “lightbox” around the blue LEDs and coating the the emitting surface of the “box” with the phosphor (hence remote phosphorisation) it seems that the binning problems are no more an issue.
More about the fair tomorrow….