Haha,,,yeah you were the guy doing all the mathematical calculations/graphs. Actually a couple months ago I already asked the guy at Dereelight about this, he told me briefly the angle is incorrect but i barely got it. So just take it that the XR-E is unbeatable so i just got that....
But its not that a XM-L aspheric cannot perform. It can do about 100k lux @ 1m with a 66mm aspheric, ala size is just a wee bit bigger than a typical 2 x 18650 light like Catapult V3. That is SR90/TK70 performance. It is just that the focal length of the lens is optimised for flood/at the shortest length. The lens bulge of the DEFT/Dereelight aspherics is very different from this.
You guys play with photography, different lenses?
BTW, my wife, sis-in-law, nieces all like the light. "SO CUTE" Stand it on it's head, cute! Stand it on it's tail, cute! It is definitely cuter than DEFT/Dereelight/Tiablo aspherics.
Ok I got the lens off. I'll try to mate it with the Dereelight aspheric and see what it can do... Stay tuned folks! <---- This is what i call Flashlight Hobby!
Update : I got 49k lux @ 1m, meter at 1m. Hand focusing with the Dereelight aspheric lens. heh.... T9 is 38mm, Dereelight is 52mm diameter i think.