Quote " In Newon, rows of high-quality LEDs are embedded in something we like to call a polymer waveguide. In English, this means a special translucent material which gives a bright, even glow that looks like a brighter version of neon. This stuff was also designed to be relatively easy to bend or mold into custom shapes, making it perfect for signs."
This is the plastic that gathers light. Typically used in shop displays.
Also used in fiber sights for weapons. By gathering available light and dispersing it along one axis, it looks like it is very bright....