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[APD] PUR-efficiency for Luxeon Star LED

I used the same action-spectrum as my last post (B):
The spectral distributions for white and warm white Luxeon Star here:

If I read the PDF right the warm white Luxeon should have 20
lumens/watt and the white 45 lumens/watt, and that makes the warm
white Luxeon terribly inefficient at 0.13 microEinsteins/Joule and the
white at 0.38 microE/Joule.

This means they would be comparable efficient growing plants to
ordinary incandescent light bulb.

// Daniel.
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