Traditionally light-focusing systems have consisted of either a lens, or a reflector. Lenses have the advantage of emitting a homogenous light pattern for distances almost 70% of the light is scattered and lost.
Conversely, while reflectors do a better job of capturing a higher percentage of light for long-distances, when they are used for up-close reading scattered light causes "rings" and "holes" in the light pattern leading to eye fatigue.
In both these cases, the lumen count (brightness) loses its validity as light is misdirected and wasted. That's why we decided to try something different.
If you pull together the strengths of the lens and reflector into one combined system, you achieve clear, homogeneous light spill for up-close reading and a sharply-focused beam for long-distance viewing.