[APD] PUR-efficiency for Luxeon Star LED

["Daniel Larsson" <defdac at hotmail_com>]

I used the same action-spectrum as my last post (B):
http://www.cartage.org.lb/en/themes/Sciences/BotanicalSciences/PlantHormones/Nutrition/706.GIF
The spectral distributions for white and warm white Luxeon Star here:
http://www.luxeon.com/pdfs/DS23.pdf

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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