| 摘要 |
A light pipe (400, 500) is configured to provide a wide effective angle of illumination while simultaneously providing a substantially uniform distribution of light along a length of the light pipe. The light pipe comprises an outer surface (410, 510) and an interior region bounded by an inner surface (420, 520) interfacing with the outer surface (410, 510), one or more reflective surfaces (108) aligned with the inner surface (420, 520) and disposed such that when at least one of the one or more reflective surfaces is illuminated, light is emitted from the light pipe at one or more specified angles of light emission. The outer surface has a first portion (410a, 510a) and at least a second portion thereof (410b, 510b, 510c); wherein the one or more of the reflective surfaces (108) functions as a secondary light source, and wherein the at least second portion (410b, 510b, 510c) has a radius of curvature which differs from the radius of curvature of the first portion (410a, 510a) of the outer surface (410, 510). |
