The emitter has little to do with the beam profile. It's more so the reflector and its size, depth and how big it is in relation to the emitter inside. LEDs can out-throw HIDs and vice-versa.
Not sure what a Vinh's section is...a person's name I guess. Will try to find it.
Under your name says flashaholic. I'm starting to understand that. This hobby seems addictive already.
I'm waiting for my 3 flashlights to come by mail already. A little thumb sized five mode 200 lumen edc light that uses something called a 123?,
an 18" black beast they say is made of aircraft material or something with 85W, and possibly a Chinese
con job that uses six 18650 batteries.