BLF recoil über-thrower

[EasyB]

@Enderman

If you do a ray trace of a parabolic reflector you will see that when focused to infinity (aka not converging or diverging) the LED is at the focal point, and all rays are collimated.

In this case, a larger reflector will make a larger spot (eg. a 6” diameter reflector will make a 6” spot, a 9” diameter reflector will make a 9” spot)

In practice it does not work this way, probably because LEDs are not points. Please see demonstration done in the thread I linked above.

@Enderman

In either case the intensity will be the same, but more of the light is being collected in order to make the spot bigger with higher lumen output overall (same intensity, more area = higher lumens)

In practice this is definitely not true. See this thread: Flashlight Optics - Dome, Dedoming and Throw