Patent ID: 6848822
Filing Date: 2005-02-01
Classification: F21S,F21V,F21W,G02B

Abstract:
1. An illumination apparatus comprising: a housing formed with a recess, wherein the recess defines a ring-like shape and includes one or more interior side walls; a mirror surface on the housing, wherein the mirror surface is substantially surrounded by the ring-like shaped recess; a light guide that transmits light via total internal reflection (TIR) positioned within the recess such that the light guide is in proximity to the one or more interior side walls; and a set of notches formed on the light guide along a centerline axis of the tight guide to define an angular distribution of light emitted from the light guide, wherein the angular distribution of the light defined by the set of notches and emitted from the light guide is such that the light is angularly dispersed from the recess without substantially illuminating the interior side walls.