Patent ID: 8369674

Claim:
An optic device comprising: a first multilayer zone for redirecting and transmitting photons through total internal reflection including a high-index layer of material having a first real refractive index n 1 and a first absorption coefficient β 1 ; a low-index layer of material having a second real refractive index n 2 and a second absorption coefficient β 2 , wherein the low-index layer of material comprises a cylindrical core having one of a curvilinear or a polygonal cross-section; and a grading zone disposed between said high-index layer of material and said low-index layer of material, the grading zone configured to at least partially enclose said low-index layer of material, and said high-index layer of material configured to at least partially enclose said grading zone, said grading zone comprising a first grading layer having a third real refractive index n 3 and a third absorption coefficient β 3 such that n 1 >n 3 >n 2 , wherein total internal reflection of photons occurs proximate an interface of the high-index layer and the grading zone and the low-index layer and the grading zone, and wherein the grading zone increases a critical angle for the total internal reflection.