29 Jun '12, 9pm

Interested in #LED color mixing? The importance of chromaticity coordinates explained by TI’s Don Schelle & @margeryc:

I learned quite a bit about the relationship between the manufacturer’s bin data and how that relates to the LED’s actual composite color from reading Don Schelle’s article, Accurately Plot Colors from Power Spectrum Data . However, I had thought manufacturers always provided LED bin data, especially for color LEDs. Maybe I was wrong and bin data isn’t universally available? Or, yeah, maybe the Crees, Lumileds and Osrams provide bin data for all their RGB LEDs, but not the second tier (and lower) LED manufacturers? So I asked Don for the back story behind why he developed this technique. Here’s his response: “This article stemmed from me trying to learn how to do colour mixing with RGB leds. Chromaticity coordinates are key for accurate colour mixing. I looked around at quite a few LEDs in different colours and found that manufacturers sometimes publicly post chromaticity ...

Full article: http://www.edn.com/design/led/4375980/LED-color-mixing--T...

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