Patent ID: 8628222
Filing Date: 2014-01-14
Classification: F21V,F21Y,G02B

Abstract:
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; 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 a main plane section cut through the optical substrate defines a location of the first portion to be on one side of the main plane and the second portion to be on the opposite side of the main plane.