Here's the same calculations but for the xr-e.
The only change in this table vs the xp-g one is that the xr-e definitely has a very different light intensity at various angles off centre from the xp-g. Its putting out hardly any light at 60 degrees off centre, while the xp-g is still at 40% of peak intensity. Obviously you'd need quite a different reflector shape/size for an xr-e vs an xp-g Well designed reflectors that suit the emitter would probably negate much of the differences in the varying output at angles off centre. I can't really comment out how this makes the xr-e as a better/worse potential thrower vs an xp-g but I think the emitter brightness intensity as described by saablaster is much more important.
Please note I don't take into account how much light is lost when it hits the reflector vs going straight out the front without hitting the reflector. I don't know how much is actually lost by the reflector, and I imaging it varies depending on the angle the light hits the reflector.
The only change in this table vs the xp-g one is that the xr-e definitely has a very different light intensity at various angles off centre from the xp-g. Its putting out hardly any light at 60 degrees off centre, while the xp-g is still at 40% of peak intensity. Obviously you'd need quite a different reflector shape/size for an xr-e vs an xp-g Well designed reflectors that suit the emitter would probably negate much of the differences in the varying output at angles off centre. I can't really comment out how this makes the xr-e as a better/worse potential thrower vs an xp-g but I think the emitter brightness intensity as described by saablaster is much more important.
Please note I don't take into account how much light is lost when it hits the reflector vs going straight out the front without hitting the reflector. I don't know how much is actually lost by the reflector, and I imaging it varies depending on the angle the light hits the reflector.
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