[sdiy] Odp: Coloured LEDs

[Roman]

Haven't looked at them for a while but AFAIR there was something covering the diode die. The body/lens is clear but that little reflector where actual semiconductor is placed, was totally covered with opaque stuff. Kinda like white LEDs. So I guess it's just the same as with whites, one basic color emiting from the diode is stimulating mystery chemicals that produce fuzzy spectrum of other wavelengths.   Roman  Dnia 19 lutego 2017 02:40 Roman <rsdio at audiobanshee.com> napisał(a):  I'm a bit disappointed that the Optosupply table for OS*4L3131A products does not show the dominant wavelength in nanometers for any of these. Then again, they might all have multiple wavelengths simultaneously. Do you know whether they're pure, single-frequency colors or mixtures?   Brian    On Feb 18, 2017, at 6:38 AM, Roman <   modular at go2.pl > wrote:   Optosupply makes those crazy colors LED, they are called 4L3131 or something, and what you get is: cream, sand, sunshine, rose, tomato, lavender, sakura, cyan, sky, orange peach, baby pink, cherry, magenta, peach, salmon pink, aqua, leaf, lime, mint, lemon, yolk.  But to me they are all just 50 shades of white ;)  Especially after 3 years sitting in the bags they appear very similar colors.  And only 30 degrees viewing angle.   Roman
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