Looking at the spectrum charts for the XM-L vs the XM-L2, I've noticed the XM-L2 is quite different particularly for the neutral (3700-5000K) range. Somebody pointed this out in another thread and nobody really noticed so I thought I'd ask about it in its own thread.
XM-L sheet: http://www.cree.com/~/media/Files/C...d Modules/XLamp/Data and Binning/XLampXML.pdf
XM-L2 sheet: http://www.cree.com/~/media/Files/C... Modules/XLamp/Data and Binning/XLampXML2.pdf
Cool:
"Neutral white":
"Warm white":
The biggest difference is for the neutral whites. The XP-G2, XP-G, and XM-L neutrals look very different to the XM-L2 (more red/orange output vs blue output, relatively speaking).
I'm wondering if the XM-L2 spec sheet result for neutral is a mistake or they measured at a different part of the neutral range (3700-5000K for Cree)?
Also I'm wondering how the "neutral" XM-L2's can really be neutral compared to XM-L, XP-G[2] if their red/orange/yellow output is that much lower.
Scratching my head here...
XM-L sheet: http://www.cree.com/~/media/Files/C...d Modules/XLamp/Data and Binning/XLampXML.pdf
XM-L2 sheet: http://www.cree.com/~/media/Files/C... Modules/XLamp/Data and Binning/XLampXML2.pdf
Cool:
- Peak red/orange output drops from 50 to 40% relative power, they're otherwise pretty similar
"Neutral white":
- Peak red/orange output drops from 70% to 50% of relative output
- Peak deep red (~650nm) output drops from 40% to 20% of relative output
- The dip around aqua drops from 16% to 10% of relative power
- Peak blue output is more or less the same wavelenth of cool, instead of being maybe 10nm warmer on the xm-l
"Warm white":
- Peak blue output drops from 65% to 36% of relative output
- Deep red drops from 68% to 60% of relative output
The biggest difference is for the neutral whites. The XP-G2, XP-G, and XM-L neutrals look very different to the XM-L2 (more red/orange output vs blue output, relatively speaking).
I'm wondering if the XM-L2 spec sheet result for neutral is a mistake or they measured at a different part of the neutral range (3700-5000K for Cree)?
Also I'm wondering how the "neutral" XM-L2's can really be neutral compared to XM-L, XP-G[2] if their red/orange/yellow output is that much lower.
Scratching my head here...