Dr. Jones: A BEAUTIFUL MIND.........."Flashlight Optics: Dome, dedome and throw"........

[Enderman]

@nottawhackjob

Soooooooo. In light of Dr. Jones’ opus, did anyone ever figure out WHY the new XP-G3 turned out to be a lousy dedomed thrower? Other than it lacking bond wires, and slightly larger die, the rest of the possible reasons appear to have been theories and no proof.

In reading this thread again I’ve since concluded that it was never figured out.

But maybe it has?

Dedomed LED Tints Compared: XP-G3, XP-G2, XP-L

The XP-G3 and the mystery of the disappearing luminance

The XPG3 created a lot of excitement when it was first tested because of its high output and low Vf. With a die area very close to the XPG2 but with more output, the XPG3 was anticipated to beat the XPG2 for thrower applications. But the performance of the XPG3 in flashlights was disappointing in some ways: the measured throw when dedomed was significantly less than the dedomed XPG2 and there was a pronounced angular/spatial “tint shift” in the beam which was distracting and hindered object iden…