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Embodiments of the invention relate to an internal reflection light funnel, including an internal reflection cone having a first diameter at an entrance end and a second diameter at an exit end, the first diameter being greater than the second diameter; and a light source embedded within the cone. The funnel has a half angle of less than about 25 degrees.
The Curators of the University of Missouri, Columbia, MO
Xu, Zhi, "Optical device components" (2011). UMSL Patents. 45.