Techjunkie
Enlightened
IIRC, there weren't any rings or artifacts, so... 10?. There were two components to the beam - hotspot and spill, much like a reflector. Other optics project single component beams, like the DX quad for example, which projects a large rounded square. Still others work like aspherics and project the die image to the finest detail. I think that tri-optic was one of my favorites.
