BIREFRINGENT DIFFUSER

摘要

A birefringent diffuser (200) includes a first optical material (125) and a first birefringent material (205). The first optical material (125) and the first birefringent material (125) are combined to form a planar layer. The planar layer has an internal pattern of the materials presenting a substantially uniform index of refraction for incident light (300, 305) which is substantially normal to the planar layer and exhibiting a varying index of refraction for at least a portion of light which is trapped in guided modes (315).