Measured by an LPM testing the beam through the glasses. See Styro's video that you linked to see.
Snecho,
I guess I'm being thick-headed. So if the beam is not passing through the lens, at all, some sort of light is still passing through?
Measured by an LPM testing the beam through the glasses. See Styro's video that you linked to see.
As far as I know theoretically no, no light=no power. Maybe a more experienced member can elaborate.Snecho,
I guess I'm being thick-headed. So if the beam is not passing through the lens, at all, some sort of light is still passing through?