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Confirmed - Osram PLT4 - A "new blue" wavelength :)

qumefox

qumefox

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You also have the problem that different wavelengths refract differently through the same lensing.. As rhd demonstrated with the diffraction grating. It would be hard to focus and multiple wavelengths the same amount with the same lens.
 





Cyparagon

Cyparagon

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Chromatic abberation can be fixed (mostly) with a pair of lenses (achromatic doublet). As mentioned, I'd be more worried about the different emitter locations.
 
qumefox

qumefox

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Well the reds and blues are usable, so that would only be a $100 diode. heh.
 
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