I understand the light dispersion.... I fully understand the difference between spots and floods..... By the way Nice job in trying to explain that.... I also understand how the SAE lights have the upper cut off meaning that the lens is 100 percent directional (it has a top of the lens and a bottom).Well, let me think of the best way to explain.
So think of it like this....
You know how a garden hose sprayer works?
You turn on the hose and then twist the nozzle and the more you twist it, the more it either sprays wide and short, or long and narrow like a water jet.
So think of that like your light patterns.
Long narrow is a spot, short and wide like a diffused. medium like a driving/flood, etc.
Well lets say you turn the sprayer to a medium pattern for example. If you hold it straight forward. Completely horizontal, it sprays straight. If you turn the handle upside down and still hold it straight forward horizontally. The water still sprays straight forward (ignore the fact that gravity over a distance sags the water.) So the point is it is uniform. Top or bottom. The pattern projects straight.
So, to angle the light down, you tilt the entire light housing down at a slight angle.
What is different about the new Baja SAE lights is that they don't project the light vertically. They have optics in them Like a prizm. That BEND the light beam DOWN and a CURVE or an angle.
That curve down at an angle means you can keep the light housing straight forward, but the light itself angles down. In turn, if you flip them upside down, the light beam will angle UP into the air.
Make sense?
John
The reason I asked the question, and maybe I misunderstood, It sounded like you guys felt it necessary to flip the lenses when mounting lights upside down. Which unless they were the SAE lights (those lens need flipped) then why was it necessary to be flipping the lens? That made no sense to me because, as you eloquently described, the light dispersion would have been identical.
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