Patent ID: 8430548

Claim:
An apparatus comprising: a) a first light emitting source; b) a first light input surface disposed to receive light from the first light emitting source; c) a first light output surface through which a first portion of light emitted from the first light emitting source exits the apparatus in a first light output profile; d) a first volumetric light scattering region comprising the first dispersed phase domain material of refractive index n p and a first continuous phase material of refractive index n m wherein |n m −n p |>0.001; e) a volumetric light transmitting region comprising the first volumetric light scattering region and disposed to receive light from the first light emitting source wherein a first curved portion of the first volumetric light scattering region is curved in shape within a first cross-sectional plane orthogonal to the first light output surface; wherein the integrated transmission of the volumetric light transmitting region is greater than 90% as measured by ASTM D1003.