Hermi-what? :thinking: Lambertian, perhaps?
Haha, just noticed and corrected that... As corrected, I mean hemispherical or lambertian as such that the light dispersed somewhere around/about 120+ degrees. But to be honest, I'm not sure what degree the dispersion pattern is for Luxeons, SSCP4s and Edison Optos are. I remember reading that SSP4s emit a 130 degree dispersion (compared to the 70 degrees that a CreeXRE does).
It's obvious when you look at the physical design of a Cree and conclude why it has a narrower dispersal pattern when compared with the physical design of a Luxeon or SSC LED. People here have said all along that if Cree had made their emitter more like a Luxeon, that doing flashlight mods/upgrades with existing reflectors would've been much easier.
Generally speaking, I have found that SSCP4s exhibit a floodier output than CreeXREs. My guess is that the dispersal pattern of an SSCP4 has alot more of the light firing out of the lower side of its dome than the upper part of it and therefore hitting more of the inner part of the reflector. Whereas, I believe that since the CreeXRE has a narrower output, its dispersal pattern has alot of the light hitting the outer portion of the reflector. I think that why Cree lights always have such a well defined hotspot and why you need a deep reflector to get most out of them. I maybe be a bit off on things there, but I base what I just said from my observations of using these LEDs in my various flashlights.