Patent ID: 6554456
Filing Date: 2003-04-29
Classification: F21V

Abstract:
An efficient system for directing light, comprising:a) a light source having a bulbous region and a first member projecting from the bulbous region; b) a generally tubular, hollow coupling device with an interior light-reflective surface for receiving light from the source at an inlet and transmitting it as a generally diverging light beam through an outlet; the coupling device being shaped in accordance with non-imaging optics and increasing in cross sectional area from inlet to outlet so as to reduce the angle of light reflected from the surface as it passes through the device; c) the inlet and the outlet of the device being respectively defined by first and second axially oriented edges, the first edge having a recess extending in the direction of the second edge and receiving the first member, for positioning the light source closer to the second edge; and d) conditioning optics comprising at least one lens for receiving the light beam after it passes through the coupling device and giving it a desired pattern.