Light directing apparatus

摘要

A light directing apparatus includes an optical substrate having first and second sides, a compound lens outer surface (CLOS) on a first portion of the first side, and first and second protrusions on a second portion of the first side. The CLOS is in optical communication with the second side, the CLOS having mirror image symmetry about a medial plane that contains a centerline of the CLOS. The first protrusion is disposed proximate the CLOS, and in optical communication with the second side. The second protrusion is disposed proximate the first protrusion, and in optical communication with the second side. The first protrusion is disposed between the second protrusion and the CLOS. The first and second protrusions each have a curved apex such that first and second planar section cuts through the optical substrate perpendicular to the medial plane cut twice through each curved apex.

主权项

1. A light directing apparatus, comprising:
an optical substrate having a first side and a second side; a compound lens outer surface on a first portion of the first side of the optical substrate, the compound lens outer surface disposed in optical communication with the second side of the optical substrate, the compound lens outer surface having mirror image symmetry about a medial plane that contains a centerline of the compound lens outer surface; a first protrusion on a second portion of the first side of the optical substrate, the first protrusion disposed proximate the compound lens outer surface, and disposed in optical communication with the second side of the optical substrate; a second protrusion on the second portion of the first side of the optical substrate, the second protrusion disposed proximate the first protrusion, and disposed in optical communication with the second side of the optical substrate; wherein the first protrusion is disposed between the second protrusion and the compound lens outer surface; and wherein each of the first protrusion and the second protrusion have a curved apex such that first and second planar section cuts through the optical substrate perpendicular to the medial plane and cut twice through respective ones of the curved apexes of the first and second protrusions; wherein the compound lens outer surface comprises a valley that extends along the centerline from a first edge of the compound lens outer surface to a point on a second edge of the compound outer surface, the first edge being coincidental with the first side, the second edge being coincidental with the second portion, and the medial plane being orthogonal to the first side.