Patent ID: 7310887
Filing Date: 2007-12-25
Classification: G01C,G02B,Y10S

Abstract:
1. A lens used to direct and shape a light beam comprising: a first lens element adapted to receive a first light beam and to project a first fan-shaped light beam exterior to the first lens element; and a second lens element adapted to receive a second light beam and to project a second fan-shaped light beam exterior to the second lens element, wherein the first lens element includes at least a first total internal reflective surface adapted to reflect the first light beam within the first lens element and a first refractive surface adapted to refract the reflected first light beam, wherein the second lens element includes at least a second total internal reflective surface adapted to reflect the second light beam within the second lens element and a second refractive surface adapted to refract the second reflected light beam, and wherein the first total internal reflective surface and the first refractive surface work together to create the first fan-shaped light beam and the second total internal reflective surface and the second refractive surface work together to create the second fan-shaped light beam.