What do the terms "LUMEN" and "LUX" actually mean and how are they related? It is only possible to draw clear conclusions about the subsequent lighting pattern by combining these two terms.
= Amount of light that can be produced by the source (LED), or the light power of the LED.
the light from
the LED(s) and
by reflection and refraction, aim the light in the desired direction.
= Illuminance, indicates the intensity of the light that arrives
at a specific point on an illuminated surface
A lower lumen light with good optics can produce more LUX (useable light) than a higher lumen light with poor optics.